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Sample records for da guanabara basin

  1. Epidemiologia da raiva humana na Guanabara

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    Alfredo R. Matta B. da Silva

    1971-08-01

    Full Text Available A raiva humana se mantém como problema de Saúde Pública, especialmente nas áreas urbanas, onde o cão atua como principal reservatório e fonte imediata de infecção. A deficiência de programas de controle de cães vadios, de imunização sistemática e de educação sanitária, contribui para a perpetuação da cadeia epidemiológioa. O presente estudo analisa todos os casos de raiva humana, observados em habitantes do Estado da Guanabara, no período 1965-1969, segundo as variáveis: idade, sexo, côr, variação estacional, período de incubação e de duração da fase clínica, fonte de infecção, local de mordedura e uso de vacina posterior à exposição. Os principais resultados foram: 1. A ravia na Guanabara, parece ser mais comum nos grupos etários mais jovens e nos homens. 2. Não se observou variação estacional. 3. O período de incubação mediano foi de 45 dias e de duração da fase clínica de 3 dias. 4. Ocorreu uma associação entre período de incubação menor e vacinação incompleta.

  2. Baia de Guanabara pipelines - rehabilitation and integrity management; Reabilitacao e gerenciamento da integridade dos dutos da Baia de Guanabara

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Ricardo D. de; Matsuura, Minoru [TRANSPETRO - PETROBRAS Transportes, Rio de Janeiro, RJ (Brazil)

    2003-07-01

    In 2001 PETROBRAS implemented a new Standard for Pipeline Structural Integrity Management of PETROBRAS (PID). All pipelines operated by PETROBRAS had to be adapted to the new requirements imposed by this Standard. When this standard was applied to the Guanabara Bay pipeline many facilities had to be adapted, new inspection procedures implemented and inspection reports reviewed. The first action was to map all pipelines, using a range of techniques, to determine their accurate 3D position. The sections not buried were inspected by divers to identify free spans that exceeded the recommended limits. Launchers were installed in the lines going to the piers to allow in-line inspection. This inspection detected many dents caused by vessels, internal corrosion and external corrosion in the inter-tidal zone. The corrosion monitoring system was redesigned and new monitoring points were installed to provide more accurate information on the high risk areas. The cathodic protection system was adapted to provide remote monitoring and data analysis. A new routine of geotechnical inspections, on-shore inspections and helicopter surveys has been implemented. Defects identified by the in-line inspection have been assessed in a conservative way and all lines have been hydrostatically tested to demonstrate continued fitness for purpose. (author)

  3. Prevalência de micoses superficiais em comunidade fechada do Estado da Guanabara

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    Nurimar C. Fernandes Wanke

    1974-04-01

    Full Text Available Os autores relatam a freqüência das micoses superficiais entre 143 internos de um orfanato da zona rural do Estado da Guanabara. Foram observados 21 pacientes com tinea pedis e 5 pacientes com pitiriase versicolor. O exame direto foi positivo em todos os casos; as culturas realizadas nas dermatofitoses mostraram 4 (19% resultados positivos, sendo imolados o Trichopbyton mentagrophytes e o Trichophyton rubrum. O teste intradérmico com a tricofitina nos casos de tinea pedis mostrou 16 resultados positivos, ausência de reação em 2 casos e reação fraca em 3. O trabalho ressalta a importância das micoses superficiais em saúde pública e compara os resultados obtidos com dados oriundos de serviços de dermatologia.The authors report the frequency of the superficial mycosis among 143 children of an orphanage in the rural arca of the State of Guanabara. There were observed 21 patients with tinea pedis and 5 patients with pityriasis versicolor. All cases showed positivity by direct examination; four (19% positive cultures were obtained from the cases of dermatophytoses and the isolated species were Trichophyton mentagraphytes and Trichophyton rubrum. The trichophytin test was made in patients with tinea pedis and 16 positive reactions developped at 48 hours. The survey emphasizes the importance of cutaneous mycoses as a public health problem and makes a comparison between the achieved data and the investigations carried out on outpatients dermatologia clinics

  4. Prevalência de micoses superficiais em comunidade fechada do Estado da Guanabara

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    Nurimar C. Fernandes Wanke

    1974-04-01

    Full Text Available Os autores relatam a freqüência das micoses superficiais entre 143 internos de um orfanato da zona rural do Estado da Guanabara. Foram observados 21 pacientes com tinea pedis e 5 pacientes com pitiriase versicolor. O exame direto foi positivo em todos os casos; as culturas realizadas nas dermatofitoses mostraram 4 (19% resultados positivos, sendo imolados o Trichopbyton mentagrophytes e o Trichophyton rubrum. O teste intradérmico com a tricofitina nos casos de tinea pedis mostrou 16 resultados positivos, ausência de reação em 2 casos e reação fraca em 3. O trabalho ressalta a importância das micoses superficiais em saúde pública e compara os resultados obtidos com dados oriundos de serviços de dermatologia.

  5. PRAIAS DA BAÍA DE GUANABARA NO ESTADO DO RIO DE JANEIRO

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    Maria Augusta Martins da Silva

    2016-06-01

    Full Text Available A geomorfologia e granulometria das areias de 29 praias da Baía de Guanabara (estado do Rio de Janeiro são aqui apresentadas para a caracterização da dinâmica praial e estabilidade sob as condições atuais do nível do mar e clima. Em um ambiente com ondas de baixa energia e de micromaré, a morfologia das praias reflete a energia das ressacas e a localização das praias em relação a entrada dessas ondas na Baía de Guanabara e como estas vão se modificando em função da batimetria e geomorfologia da baía até alcançarem as praias. Assim, que praias como a de Icaraí (Niterói e do Flamengo (Rio de Janeiro apresentam variações sazonais expressivas dos seus perfis topográficos e mudanças na granulometria da areia. As demais praias apresentam variações morfológicas moderadas (como Boa Viagem, Flechas e São Francisco, em Niterói; praias de Fora e Vermelha, na cidade do Rio de Janeiro ou discretas (como as praias de Charitas, Adão e Eva em Niterói; Botafogo, de Dentro e Urca, no Rio de Janeiro; as praias das Ilhas do Governador e Paquetá, Magé e São Gonçalo. As praias de Icaraí, Flechas, Boa Viagem e Flamengo são também vulneráveis as ressacas, corroborado pelo registro histórico existente. As areias predominantes são as de granulometria fina e média, porém, elas podem ser mais grossas a depender da energia das ondas, da contribuição local de afloramentos ou devido à influência humana, introduzindo no ambiente material de aterros e lixo. Um número relativamente alto de praias se encontram descaracterizadas por obras e construções dentro dos limites da faixa de areia, além de estarem degradadas e mal conservadas. As praias da Baía de Guanabara se encontram em equilíbrio com as condições atuais de nível de mar e clima. Os problemas existentes se devem às mudanças causadas pelo Homem no ambiente praial e/ou no de restinga e, a ocupação inadequada desses ambientes os quais, durante as ressacas, s

  6. O MARKETING SOCIAL COMO DIFERENCIAL COMPETITIVO: O CASO DA EMPRESA EXPRESSO GUANABARA

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    Patrícia Grenfell Oliveira

    2015-12-01

    Full Text Available Nos últimos anos as organizações têm demonstrado grande preocupação com as questões sociais e os conflitos ambientais que cercam nossa sociedade. Neste contexto surge o conceito de responsabilidade social e o marketing social, como um campo de atuação inspirado na ideia de sustentabilidade, capaz de alavancar a imagem e a marca da organização, além de ser uma diferencial perante seus concorrentes. Desta forma, a presente pesquisa teve como principal objetivo verificar a percepção dos clientes da Empresa Expresso Guanabara sobre o marketing social como diferencial competitivo. Trata-se de uma pesquisa com abordagem quali-quantitativa, de cunho exploratório e descritivo, fazendo uso do método estudo de caso. O marketing social pode ser visto como um diferencial competitivo que visa favorecer a organização e sua imagem perante seus stakeholders. Os resultados evidenciam que os clientes da empresa ainda não utilizam seus serviços pelo fato desta ser socialmente responsável e desenvolver estratégias de marketing social. Desta forma, concluir-se que na empresa estudada o marketing social ainda não é compreendido como um diferencial competitivo perante seus clientes e gestores.

  7. O MARKETING SOCIAL COMO DIFERENCIAL COMPETITIVO: O CASO DA EMPRESA EXPRESO GUANABARA

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    Patrícia Grenfell Oliveira

    2015-12-01

    Full Text Available Nos últimos anos as organizações têm demonstrado grande preocupação com as questões sociais e os conflitos ambientais que cercam nossa sociedade. Neste contexto surge o conceito de responsabilidade social e o marketing social, como um campo de atuação inspirado na ideia de sustentabilidade, capaz de alavancar a imagem e a marca da organização, além de ser uma diferencial perante seus concorrentes. Desta forma, a presente pesquisa teve como principal objetivo verificar a percepção dos clientes da Empresa Expresso Guanabara sobre o marketing social como diferencial competitivo. Trata-se de uma pesquisa com abordagem quali-quantitativa, de cunho exploratório e descritivo, fazendo uso do método estudo de caso. O marketing social pode ser visto como um diferencial competitivo que visa favorecer a organização e sua imagem perante seus stakeholders. Os resultados evidenciam que os clientes da empresa ainda não utilizam seus serviços pelo fato desta ser socialmente responsável e desenvolver estratégias de marketing social. Desta forma, concluir-se que na empresa estudada o marketing social ainda não é compreendido como um diferencial competitivo perante seus clientes e gestores.

  8. Floresta, política e trabalho: a exploração das madeiras-de-lei no Recôncavo da Guanabara (1760-1820 Forest, politics and labor: the extraction of timber in the Recôncavo da Guanabara (1760-1820

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    Diogo de Carvalho Cabral

    2008-06-01

    Full Text Available O artigo procura contribuir para o adensamento da historiografia acerca das operações de extração das madeiras-de-lei, espécies de árvores particularmente propícias à construção naval e por isso legalmente reservadas à apropriação preferencial por parte da Coroa portuguesa no território colonial. O recorte espaço-temporal abarca os sertões do Recôncavo da Guanabara (Capitania do Rio de Janeiro e, em particular, a bacia do rio Macacu no final do período colonial. Usa-se documentação variada (crônicas oficiais, descrições de viajantes, correspondência, lista nominativa de habitantes e inventário post-mortem com o objetivo de mostrar que as relações socioeconômicas dos atores envolvidos (funcionários reais, proprietários fundiários, fabricantes, serradores etc. entre si e com a floresta eram ditadas por negociações cotidianas que viabilizavam a 'letra fria' das leis metropolitanas.The article aims to contribute for the still rarified historiography about the extraction of madeiras-de-lei, those tree species that are particularly suitable for shipbuilding and, for that reason, legally reserved for preferential appropriation by the Portuguese crown in the Brazilian colonial territory. The space-temporal outline embraces the inner lands of Recôncavo da Guanabara (Rio de Janeiro captaincy, in particular the Macacu river basin, at the end of the colonial period. Varied documentation (official chronicles, travelers accounts, letters, a economic-demographic census, and a post-mortem inventory is used in order to show that socioeconomic relations among the actors involved (royal bureaucracy, landowners, timber producers, sawyers, etc., and those between them and the forest were dictated by daily life negotiations which made the 'cold letter' of metropolitan laws viable.

  9. Grãos de Pólen de Sedimentos Superficiais da Baía de Guanabara, Rio de Janeiro, Brasil

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    Cintia Ferreira Barreto

    2013-01-01

    Full Text Available O trabalho tem como objetivo identificar e descrever a morfologia de tipos polínicos ocorrentes nos sedimentos superficiais da Baía de Guanabara, Rio de Janeiro, Brasil. A análise palinológica possibilitou identificar 91 tipos polínicos, sendo 5 de gimnospermas e 86 de angiospermas. Com base nos dados polínicos e ecológicos obtidos neste trabalho será possível contribuir para o reconhecimento das formações vegetais e a caracterização da vegetação ao longo do Holoceno.

  10. Avaliação de microplásticos em praias da Baía de Guanabara, Rio de Janeiro, RJ, Brasil

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    Aline Lara Fernandes Alonso

    2014-01-01

    Neste trabalho foram analisados sedimentos marinhos de três praias da Baía de Guanabara (praia de São Bento e praia da Bica, na Ilha do Governador, e praia de São Francisco, em Niterói), Rio de Janeiro, para avaliar a presença de microplásticos (fragmentos plásticos com tamanho ≤ 5 mm) nestes ambientes. Os detritos plásticos visíveis (macroplástico) foram separados dos sedimentos manualmente e pesados. Os detritos plásticos não visíveis foram separados por densidade com solução satura...

  11. O MARKETING SOCIAL COMO DIFERENCIAL COMPETITIVO: O CASO DA EMPRESA EXPRESO GUANABARA

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    Patrícia Grenfell Oliveira; Renata Aquino Ribeiro; Augusto C. Aquino Cabral; Sandra Maria Santos

    2015-01-01

    Nos últimos anos as organizações têm demonstrado grande preocupação com as questões sociais e os conflitos ambientais que cercam nossa sociedade. Neste contexto surge o conceito de responsabilidade social e o marketing social, como um campo de atuação inspirado na ideia de sustentabilidade, capaz de alavancar a imagem e a marca da organização, além de ser uma diferencial perante seus concorrentes. Desta forma, a presente pesquisa teve como principal objetivo verificar a percepção dos clientes...

  12. O MARKETING SOCIAL COMO DIFERENCIAL COMPETITIVO: O CASO DA EMPRESA EXPRESSO GUANABARA

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    Patrícia Grenfell Oliveira; Renata Aquino Ribeiro; Augusto C. Aquino Cabral; Sandra Maria Santos

    2015-01-01

    Nos últimos anos as organizações têm demonstrado grande preocupação com as questões sociais e os conflitos ambientais que cercam nossa sociedade. Neste contexto surge o conceito de responsabilidade social e o marketing social, como um campo de atuação inspirado na ideia de sustentabilidade, capaz de alavancar a imagem e a marca da organização, além de ser uma diferencial perante seus concorrentes. Desta forma, a presente pesquisa teve como principal objetivo verificar a percepção dos clientes...

  13. Lisotipia Vi e classificação bioquímica de amostras de Salmonella typhi isoladas no Estado da Guanabara

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    Ernesto Hofer

    1972-01-01

    Full Text Available Na presente investigação, os autores estudaram a distribuição dos lisótipos Ví, tipos fermentativos e tetrationato-redutase, em 110 amostras de Salmonella typhi, isoladas no período de 1966-1970, no Estado da Guanabara. Para estabelecer uma melhor configuração epidemiológica dos resultados, fez-se a divisão do Estado em seis regiões, respectivamente as zonas Sul, Centro, Norte, da E. F. Central, da E. F. Leopoldina e rural. Obteve-se no cômputo geral, a prevalência dos lisótipos A (59,09%, E 1a (19,09%, T (7,27% e amostras Vi negativas (4,55%. Verificou-se ainda, que cerca de 70,90% das culturas foram classificadas no tipo fermentativo II, segundo esquema de Kristensen e 95,42% das amostras revelaram-se positivas na prova de detecção da tetrationato-redutase.In the present investigation, the authors have studied the distribution of lysotypes, fermentative types and tetrathionate- reductase in 110 strains of Salmonella typhi, isolated from hemocultures during the period 1966-1970, in the State of Guanabara, Brazil. In order to establish a better epidemiological configuration of the results, this study has been divided and effected in the six following regions: south, middle, north at the Central Railway, the Leopoldina Railway and the rural district. As a general outcome a predomination of the lysotypes A, E 1a, T and negative Vi strains has been obtained. It has stil been verified that 70,90% of the cultures were classified fermentative type Ii and that 95,42% of the strains were tetrathionate-reductase positives.

  14. A Palinologia como Ferramenta no Diagnóstico e Monitoramento Ambiental da Baía de Guanabara e Regiões Adjacentes, Rio de Janeiro, Brasil

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    Ortrud Monika Barth

    2003-01-01

    Full Text Available Palynology is a tool in retrospective studies related to climatic and environmental changes and to the human influence on the landscape in historical times. Pollen analyses of cores obtained from the Baía de Sepetiba , from lakes of the northern region of the state of Rio de Janeiro and recently of sediments from the basin of the rio Guandu, from the praia Vermelha/Urca beach and from the bottom of the Baía de Guanabara were realized. Drier and wetter climatic periods could be detected corresponding to a variable development of the rain forest, the semideciduous forest, the vegetation of “restinga”, savannas and wetlands. Human activities and changes of the environment related to changes of the vegetation in historical times were confirmed.

  15. A saúde e os riscos dos pescadores e catadores de caranguejo da Baía de Guanabara The health and risks of fishermen and crab catchers of Guanabara Bay

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    Márcia Ferreira Mendes Rosa

    2010-06-01

    Full Text Available O artigo discute a saúde, os riscos e o trabalho dos pescadores e catadores de caranguejo da região da APA de Guapimirim na Baía de Guanabara. Eles são típicos trabalhadores informais, sem proteção e garantias trabalhistas. Estão expostos a vários riscos no seu dia a dia, como acidentes com embarcações, com os apetrechos de pesca, com o próprio pescado, afogamentos, além de estarem expostos à grande radiação e variações climáticas. Há ainda a sobrecarga de peso e trabalho e a própria atividade noturna que potencializa mais os riscos. A partir de uma amostra de cem trabalhadores, que relataram por meio de uma pesquisa exploratória e descritiva de abordagem quanti-qualitativa, traçou-se um perfil dos mesmos. São trabalhadores que possuem baixa escolaridade, predominando o primeiro grau incompleto (63% e com 12% do total de analfabetos. Uma parcela desses trabalhadores (44% relataram possuir doenças ou agravos à saúde. Essas doenças estão relacionadas à sobrecarga de peso, à grande jornada de trabalho e todas as situações de periculosidade a que estão expostos em suas atividades. Foram identificadas grandes dificuldades desses trabalhadores em realizar o seu labor, havendo a necessidade urgente de encontrar medidas que possam melhorar suas condições de trabalho e vida.The article discusses the health, risks and the work of fishermen and crab catchers in region of APA Guapimirim in Guanabara Bay. Fishermen and crab catchers are typical informal workers, they suffer from lack of protection and working guarantee. They are exposed to working risks day by day such as accidents with fishing boat, fishing equipment, the own fish, drowning, as well as a lot of radiation and climatic variation. There are still the weight and work overload, as well as the activities done at night that increase the potential risks. A sample of 100 fishermen and crab catchers had told by quantitative-qualitative research that it was possible

  16. Distribuição geográfica da fauna e flora da Baía de Guanabara Geographic distribution of the flora and the fauna of the Guanabara Bay

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    Lejeune P. H. de Oliveira

    1947-09-01

    Full Text Available The author studied, the horizontal and vertical distribution of most common part of the flora and fauna of the bay of Guanabara at Rio de Janeiro. In this paper the eulittoral, poly, meso and oligohaline regions were localised and studied; and the first chart of its distribution was presented (fig. 2. The salinity of superficial waters was established through determinations based on 30 trips inside the buy for collecting biological materials. Some often 409 determinations which were previous reported together with the present ones served for the eleboration of a salinity map of the bay of Guanabara (fig. 1. This map of fig. 2 shows the geographic locations of the water regions. EULITTORAL WATER REGIME — Fig. 3 shows the diagram scheme of fauna and flora of this regime. Sea water salinity 34/1.000, density mean 1.027, transparent greenish waters, sea coast with moderate bursting waves. Limpid sea shore with white sand, gneiss with the big barnacle Tetraclita squamosa var. stalactifera (Lam. Pilsbry. Vertical distributions: barna¬cles layers with a green region in which are present the oyster Ostrea pa-rasitica L., the barnacles Tetraclita, Chthamalus, Balanus tintinnabulum var. tintinnabulum (L. e var. antillensis Pilsbry in connection with several mollusca and the sea beatle Isopoda Lygia sp. Covered by water and exposed to air by the tidal ritms, there is a stratum of brown animals that is the layer of mussels Mytilus perna L., with others brown and chestnut animals : the Crustacea Pachygrapsus, the little crab Porcellana sp., the stone crab Me-nippe nodifrons Stimpson, the sea stars Echinaster brasiliensis (Mull. & Tr., Astropecten sp. and the sea anemones Actinia sp. Underneath and never visible there is a subtidal region with green tubular algae of genus Codium and amidst its bunches the sea urchin Lycthchinus variegatus (Agass. walks and more deeply there are numerous sand-dollars Encope emarginata (Leske. The microplancton of this

  17. Estudos higiênicos sôbre os crustáceos e moluscos da Baía de Guanabara (Rio de Janeiro

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    Lejeune Pacheco Henriques de Oliveira

    1944-04-01

    Full Text Available Revisão da literatura médica sôbre higiene de crustáceos e moluscos marinhos. Intoxicações por elementos extranhos às carnes de crustáceos e moluscos: por sais de cobre, vegetais tóxicos; estranho e chumbo nas conservas de crustáceos; botulismo. Putrefação de ostras e doenças de ostras provocadas por cogumelos; crustáceos e moluscos guardados em geladeiras bolorentas. Lista das espécies de moluscos comestíveis da Bahia de Guanabara. Lista das espécies de crustáceos comestíveis da Bahia de Guanabara. Veiculação de micro-organismos patogênicos ao homem por intermédio das carnes de crustáceos e de moluscos: veiculação do vibrião colérico, dos bacilos tíficos e paratíficos e de germes do grupo coli e do gênero Proteus. Vitalidade dos bacilos tíficos nas ostras. Listas dos moluscos veiculadores dos agentes causadores das febres tíficas e paratíficas. Conceitos antigos e modernos sõbre intoxicações por crustáceos; partidas de crustáceos salubres ou não conforme o local de venda. Estudos experimentais sôbre a "talassina" princípio tóxico existente em alguns crustáceos. "Mitilotoxina", intoxicações por mexilhões e outros acidentes incriminados aos moluscos. Enterotoxina estavfilocócica em ostras. Métodos de determinação da salubridade dos moluscos; verificações nas ostras brasileiras. Depuração dos crustáceos pelas soluções cloradas. Estabulação de caranguejos denominados vulgarmente de "guaiamus" e "ussás".Recording main medical publication on Hygiene of Mollusca and Crustacea. Food-poisoning. Decomposing oysters, and shell-fish sickness by fungi. Catalogue of eatable Crustacea and Mollusca of Rio de Janeiro. Significance of Mollusca and Crustacea in the spread of diseases. Longevity of Vibrio comma, Eberthella typhosa, Salmonella schottmuelleri, Salmonella paratiphi. Escherichia coli in oysters, Microorganisms in marked oysters. Comparison old written papers with moderns publications on food

  18. Avaliação sorológica de vacinação anti-rubéola em dois educandários no Estado da Guanabara

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    Maria Genoveva von Hubingei

    1972-04-01

    Full Text Available 196 soros de crianças provenientes de dois educandários da Guanabara foram ensaiados quanto à presença de anticorpos para rubéola. através do teste de inibição de hemaglutinação. Apenas 24 crianças sem anticorpos foram encontradas e destas crianças susceptíveis um grupo foi vacinado com amostra Cendehill liofilizada do Lab. R.I.T. (Genval, Bélgica, sendo o outro grupo deixado como controle. Observou-se 100% de formação de anticorpos para rubéola no grupo vacinado. O alto nivel de anticorpos pré-vacinais encontrado sugere alta circulação do vírus cla rubéola em nosso meio.

  19. ESTUDO GEOAMBIENTAL DAS CONCENTRAÇÕES DE HIDROCARBONETOS DE PETRÓLEO (POLICÍCLICOS AROMÁTICOS – HPAs AO LONGO DO RIO ESTRELA, BAÍA DE GUANABARA – RJ

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    Carlos Marclei Arruda Rangel

    2013-02-01

    Full Text Available RESUMO Neste estudo, análises geoquímicas de dez amostras de sedimentos coletados ao longo do sistema fluvial do Rio Estrela, localizado ao norte da Baía de Guanabara, evidenciam a presença de impactos antropogênicos nesta área. As concentrações de hidrocarbonetos policíclicos aromáticos (HPAs obtidas mostraram-se ligeiramente elevadas, quando comparadas com valores encontrados em ambientes naturais. Os HPAs foram analisados nos sedimentos ao longo da bacia do Rio Estrela. Embora as concentrações destes compostos detectados nesta área tenham ocorrido em baixas proporções, os tipos de HPAs detectados com alto peso molecular, são mutagênicos e carcinogênicos. Por esta razão, compreender a dinâmica de transporte, deposição e riscos ambientais dos HPAs para o sistema ecológico, especialmente para o sistema aquático, são importantes formas de monitoramento deste ambiente. Palavras chaves: Rio Estrela, Baía de Guanabara, Poluição, HPAs   ABSTRACT In this study, the geochemical analysis of ten sediments samples collected along the fluvial system of the Estrela River, located in the northern portion of Guanabara Bay, shows the presence of anthropogenic impacts in this area. Concentrations of polycyclic aromatic hydrocarbons (PAHs obtained were slightly higher when compared with values found in natural environments. The PAHs were tested in sediments along the drainage basin of Estrela River. Although the compounds found in this area have occurred in low proportions, PAHs compounds detected, with high molecular weight, are mutagenic and carcinogenic. For these reason, understanding PAHs transport, fate and environmental risk to ecological system, especially for aquatic ecosystem, are important forms of monitor this environment. Keywords: Estrela River, Guanabara Bay, Pollution, PAHs

  20. Análise Multivariada de Dados Ecológicos da Baía de Guanabara- RJ,com Base em Foraminíferos Bentônicos.

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    Priscila Tavares dos Santos

    2007-07-01

    Full Text Available Guanabara bay is an estuary environment situated in the seaboard of Rio de Janeiro state, under the coordinates 22º 40’ and 23º 00’S and 43º 00’ and 43º 20’W. Nowadays, it has an approximate area of 377 km2, it has had a reduction of 91 km2 since the discovery of Brazil, being considered one of the most polluted seacoast regions of the country. The environmental monitoring of Guanabara bay becomes increasingly necessary in order to be capable of taking effectivemeasures in its management. Therefore, the use of bioindicator organisms, like foraminifera, is an excellent tool because of their rapid response to environmental changes. The goal of this paper is to apply statistical analyses to the biotic data benthicforaminifera, aiming to observe how they behave in Guanabara bay. In November 1999, samples of bottom sediment were collected along Guanabara bay; 52 of them distributed along all the bay were used in this study. They were treated and classified according to the pattern methodology for foraminifera. For the numerical ecology, grouping analysis and indicating species analysis (ISA were done using the programs Statistica 6.0 and PCORD. Through the groupinganalysis, it was observed the formation of groups in both samples and species. ISA showed what species is the best one toindicate the actual state of Guanabara bay - Ammonia tepida. The multivaried ecological analyses had an optimal response in the evaluation of patterns of pollution in Guanabara bay, based on benthic foraminifera.

  1. Distribuição de coprostanol (5b(H-colestan-3b-ol em sedimentos superficiais da Baía de Guanabara: indicador da poluição recente por esgotos domésticos

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    Carreira Renato

    2001-01-01

    Full Text Available A critical evaluation is presented on the use of faecal sterols for the identification of sewage contamination in Guanabara Bay. Sediments were collected from 8 stations in the bay selected as representative of different contamination levels. GC/MS determination of faecal sterols gave: coprostanol, 335 - 40000 ng g-1; coprostanone, 112-4136 ng g-1; cholesterol, 1407-7800 ng g-1; cholestanol, 2011 - 10900 ng g-1 and cholestanone, 655-7954 ng g-1. The observed concentration is in accordance with the presence of known pollution sources, however, concentration ratios of different sterols species produced unclear results evidently influenced by primary production and microbial processes.

  2. Contribuição ao estudo da circulação e do transporte de volume da corrente do Brasil entre o Cabo de São Tomé e a Baía de Guanabara Contribution to the studies of transport and circulation of the Brazil current in the are a between Cabo de São Tomé and Guanabara Bay

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    Sérgio R Signorini

    1976-01-01

    Full Text Available Tal estudo teve por finalidade avaliar a velocidade e o transporte de volume da Corrente do Brasil, no seu trecho entre Cabo de São Tomé e Cabo Frio, fazendo uso do calculo geostrofico aplicado às secções amostradas durante os cruzeiros de abril e julho de 1970 e de julho de 1973. Foram localizados dois vórtices anticiclônicos, um durante o período de abril de 1970 e o outro durante julho de 1973. O valor máximo de velocidade da corrente na superfície foi de aproximadamente 70 cm/s e o transporte de volume foi de 14 x 10(6 m³/s. Foi possível também confirmar a existência de um meandro da Corrente do Brasil através da utilização de uma secção de BT (batitermografo mecânico associada a um registro contínuo de salinidade e de temperatura obtido com um termosalinografo.During the periods of April, July, 1970 and July, 1973, océanographic cruises were conducted in order to investigate the variability of the Brazil Current in the region between Cabo de Sao Tomé and Guanabara Bay. The geostrophic model of ocean circulation was applied using the hydrographie data collected during the cruise. From this study, a maximum velocity of 70 cm/sec and a volume trans port of 14 x 10(6 m³/sec were reported. The dynamic topography with reference to the 500 db surface, showed the presence of anticyclonic eddies during the periods of April, 1970, and July, 1973. The thermohaline structure within a meander of the Brazil Current is also presented utilizing the data coming from a continuous salinity and temperature recorder in conection with the data coming from a simultaneous BT section.

  3. Experimental essay and numerical modelling in a reduced model with physical similarity to a pipeline with zig-zag geometry in Guanabara Bay (PE-3); Ensaio experimental e modelagem numerica em modelo reduzido com semelhanca fisica do duto com geometria zig-zag da Baia de Guanabara (PE-3)

    Energy Technology Data Exchange (ETDEWEB)

    Poiate Junior, Edgard; Costa, Alvaro M. da; Amaral, Claudio S.; Rocha, Renato S. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES); Guimaraes, Giuseppe B.; Souza, Pablo F. [Pontificia Univ. Catolica do Rio de Janeiro, RJ (Brazil)

    2003-07-01

    In January 2000 PETROBRAS faced a leakage of heavy heated MF380 oil from a 16'' pipeline in Guanabara Bay. The thermal structural buckling of the pipeline, interacting with the soil, induced the rupture of the pipeline wall, causing the leakage of oil. In order to overcome this undesired phenomenon PETROBRAS studied several alternatives of a new pipeline. As a result of these studies a pipeline with 'ZIGZAG' geometry was adopted, named PE-3. Due to the very few applications of this kind of concept by the oil industry and in different soil conditions compared to the existing one in Guanabara Bay, a very sophisticated procedure including the simulation of the thermal mechanical interactions between the soil and the pipeline structure was developed. Computer modeling was carried out using the finite element method considering the soil and pipeline non-linear material behavior and finite displacements. In order to validate the numerical modelling was build an experimental test in a reduced model with physics similarity of a pipeline with ZIG-ZAG geometry (PE-3). The numerical and experimental results are comparing and have a good agreement. (author)

  4. Caracterização da Matéria Orgânica Sedimentar na Baía de Guanabara Através de Marcadores Moleculares

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    Renato S. Carreira

    2003-01-01

    Full Text Available The present work aimed at investigating the effects of growing eutrophic condi-tions and soil occupation on the carbon storage in Guanabara Bay. Sterols in dated sedimentcores were used to characterize the sources of organic matter to the bay. Dinosterol was themost abundant amongst the measured sterols reaching 64.7 % of the total. Coprostanol, afecal sterol, was present in concentrations as high as 40 µg g-1 in areas of intensive sewagedischarge. These results are in agreement with the known elevated primary production inthe bay and with the severe eutrophic conditions. The calculated carbon fluxes using theorganic carbon content and the sedimention rates range between 50 g C m-2 year-1 and 500g C m-2 year-1 during the last 100 years.

  5. Apresentação Workshop Baía de Guanabara

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    Claudia Gutteres Vilela

    2003-01-01

    Full Text Available Ano 2003 Volume 26 - Workshop Baía de Guanabara Editor: Ismar de Souza Carvalho Coordenadora: Claudia Gutteres Vilela: Apresentação ISSN: 0101-9759 É com grande prazer que participo da edição do Anuário de 2003 do Instituto de Geociências, que inclui os trabalhos apresentados no Workshop Baía, realizado nos dias 12 e 13 de novembro de 2002, nesta instituição. O sucesso desse evento deve-se em grande parte aos trabalhos, apresentados sob a forma de palestras em mesas redondas ou painéis, por pesquisadores consagrados no Brasil e no exterior. O conteúdo dos trabalhos possui uma abrangência que se estende desde a Geologia até a Biologia, passando pela Oceanografia e Geografia, sempre com o objetivo comum de reunir dados sobre a Baía de Guanabara visando o diagnóstico ambiental. O Workshop Baía congregou diversas linhas de pesquisa desenvolvidas na Baía de Guanabara e regiões adjacentes, procurando uma integração das mesmas. Deste modo alguns trabalhos caracterizaram, em um contexto mais geral, a evolução do nível do mar na região sudeste durante o Holoceno, bem como apresentaram a neotectônica da região. Geoquímica orgânica de hidrocarbonetos e de metais pesados, sedimentologia e hidrogeologia integraram-se à distribuição de microorganismos nos sedimentos e na água, analisando diversas respostas a diferentes graus de poluição em regiões distintas. Um zoneamento ambiental ofereceu uma visão dinâmica das condições naturais e sociais do conjunto da Baía de Guanabara. A importância do workshop deve-se à busca de uma integração maior dos trabalhos acadêmicos para aplicação à gestão do desenvolvimento sustentável da Baía de Guanabara e seu entorno, que abriga a cidade do Rio de Janeiro e se constitui em uma das regiões com maior índice demográfico do Brasil. Seu impacto pode se avaliado pela presença de representantes de órgãos públicos como a SERLA, a Prefeitura de Niterói e ONGs ligadas a

  6. Acute and chronic toxicity of sediment samples from Guanabara Bay (RJ during the rainy period

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    Luciane Alves Maranho

    2010-06-01

    Full Text Available Guanabara Bay is a marine-estuarine environment of high ecological and socio-economic importance, subject to a variety of environmental impacts. Sediment is the eventual repository for most substances introduced into water bodies and may, therefore, provide an integrated measure of the environmental quality, which can be assessed by many different approaches. In this project, the quality of sediments from Guanabara Bay was evaluated by the ecotoxicological approach: whole-sediment toxicity tests, using Tiburonella viscana, and porewater, elutriate and sediment-water interface chronic toxicity tests, using embryos of Lytechinus variegatus, were applied. Sediments were collected at 14 sampling stations, distributed across the bay. Chronic tests showed significant toxicity in most of the sediment samples. Sediments from stations 1, 2, 3, 6, 8, 10, 11, 12 and 15 showed acute toxicity as well. The results of the different tests were well correlated, and their integration showed that the sediments analyzed were considered unsuitable for aquatic life, resulting in the environmental degradation of Guanabara Bay. In this context, the control of pollution sources and multi-purpose management are required to improve the environmental quality.A Baía de Guanabara é um ambiente marinho-estuarino de grande relevância ecológica e sócio-econômica, e sujeita a uma ampla gama de impactos ambientais. O sedimento é o principal destino para a maioria das substâncias introduzidas nos corpos d'água, podendo fornecer uma medida integrada da qualidade ambiental, a qual pode ser avaliada por várias abordagens. Neste projeto, a qualidade de sedimentos da Baía de Guanabara foi por uma abordagem ecotoxicológica, por meio de testes de toxicidade aguda de sedimento integral, utilizando Tiburonella viscana, e testes de toxicidade crônica de água intersticial, elutriato e interface sedimento-água, utilizando embriões de Lytechinus variegatus. Os sedimentos foram

  7. Reproductive biology of Cetengraulis edentulus (Cuvier, 1829, the major fishery resource in Guanabara Bay, Brazil

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    Ana Clara Sampaio Franco

    Full Text Available Cetengraulis edentulus is a broadely distributed engraulid in Southwest Atlantic, currently accounting for the main fish species commercially exploited at Guanabara Bay, Brazil. This study aimed to extend the knowledge on reproduction of C. edentulus at Guanabara Bay and to test whether some descriptors of reproductive activity, especially the gonadosomatic index (GSI, and the index of reproductive activity (IRA changed among seasons. A total of 978 C. edentulus specimens were retrieved from purse seine commercial landings at Conservas Rubi S.A. company, in São Gonçalo city, RJ. Subsamples of 90-120 individuals were collected from bimonthly yields between July 2010 (winter and June 2011 (autumn. Most fish were adults (120-170 mm TL, in response to the high selectivity of commercial fisheries. All descriptors indicated a broad spawning period (late winter to spring, peaking in November, suggesting this is the critical period to protect C. edentulus stocks from overfishing at Guanabara Bay. Fecundity averaged 12,720 oocytes and was positively related to fish size, GSI and fullness index, indicating that preserving larger individuals (TL > 160 mm could contribute significantly to the reproductive success of C. edentulus, since they produce more oocytes. Cetengraulis edentulus é um engraulídeo amplamente distribuído no Atlântico Sudoeste, sendo um importante recurso comercialmente explorado na baía de Guanabara, Brasil. O presente estudo teve como objetivo ampliar o conhecimento sobre a reprodução de C. edentulus na baía de Guanabara e testar quais descritores da atividade reprodutiva, especialmente o índice gonadossomático (IGS e o índice de atividade reprodutiva (IAR se modificaram ao longo das estações do ano. Um total de 978 indivíduos de C. edentulus foram capturados pelo método de rede de cerco da frota comercial no cais da empresa Conservas Rubi S.A., na cidade de São Gonçalo, RJ. Subamostras de 90-120 indivíduos de C

  8. Diversidade Estrutural de Bosques de Mangue e sua Relação com Distúrbios de Origem Antrópica: O Caso da Baía de Guanabara (Rio de Janeiro

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    Mário Luiz Gomes Soares

    2003-01-01

    Full Text Available Structural and functional characteristics of mangrove forests are primarily governedby the interaction of environmental characteristics, that act in global, regional or local 102Anuário do Instituto de Geociências - UFRJ Volume 26 / 2003scales. However, in areas submitted to strong influence of human activities, disturbanceshould be considered seriously. In this way, the structural characteristics of mangroves ofGuanabara bay were studied during three years (2000-2002. The studied forests presenteda high structural diversity, reflecting the action of disturbances, that determine differentdegradation levels and regeneration status (different phases of secondary succession of thestands. The stems density varied from zero (gaps to 52,800 stems.ha-1. The mean diameterat breast height varied from 1.33 cm to 7.83 cm and the medium tree height varied from1.80 m to 7.27 m. Several structural and dynamics patterns of the studied plants communitieswere identified, as follow: (a reverse " j " shaped, (b "normal" distribution, (c massmortality, (d overlap of "events", (e recolonization/gaps, (f regeneration failure, (ggaps and, (h invasion by Acrostichum aureum. The high structural diversity observed inthe studied forests, identified through the use of phytosociological parameters and speciescomposition, which determines a structural mosaic, is due to the overlapping of the followingcharacteristics: (1 variable nature of disturbances, (2 disturbances characteristics (chronicor acute, (3 spatial variability in disturbances action, (4 temporal variability in disturbancesaction, (5 variation in the frequency of disturbances occurrence and (6 capacity of thesystem to recover after a disturbance.

  9. Fisheries and conflicts in Guanabara Bay, Rio de Janeiro, Brazil

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    Silvio Jablonski

    2006-01-01

    Full Text Available Despite the magnitude of domestic and industrial pollution, fishery yield registered in several landing points at Guanabara Bay, between April 2001 and March 2002 was slightly over 19,000 tons, corresponding to a value of US$ 4.8 million. When considered only the fish directed to the food market, the total catch amounted to about 6,300 tons and a value of US$ 3.7 million. Only a few fish species reached expressive densities compatible with commercial fisheries. Among small pelagic fish, Atlantic anchoveta and Brazilian sardinella were the dominant species, while in terms of demersal fish, croakers, mullets and catfishes comprised the main part of the catch. The absence of landing data previous to the spilling of 1.3 million liters of oil in January 2000 led to claims by fishermen representative organizations of values corresponding to about 50 years of fish harvest in the bay. Possibly, a data collection network could be established in a participative way with the main fishermen local associations. The relatively stabilized fisheries in the bay suggested that reasonable inferences could be made, without, necessarily having a complete coverage of all landing points.A despeito da magnitude da poluição de origem doméstica e industrial, a produção de pescado registrado em diferentes pontos de desembarque na Baía de Guanabara, entre abril de 2001 e março de 2002, foi ligeiramente superior a 19.000 t, correspondendo em valor a US$ 4.8 milhões. Quando se considera apenas o pescado direcionado para o mercado fresco, a captura total alcançou cerca de 6.300 t e um valor de US$ 3,7 milhões. Somente algumas poucas espécies alcançam densidades expressivas compatíveis com as pescarias comerciais. Entre os pequenos pelágicos, a sardinha boca-torta e a sardinha verdadeira são as espécies dominantes, enquanto para as demersais, a corvina, a tainha e os bagres perfazem a maior parte das capturas. As pescarias para o caranguejo, nos manguezais, e a

  10. Environmental and Sanitary Conditions of Guanabara Bay, Rio de Janeiro.

    Science.gov (United States)

    Fistarol, Giovana O; Coutinho, Felipe H; Moreira, Ana Paula B; Venas, Tainá; Cánovas, Alba; de Paula, Sérgio E M; Coutinho, Ricardo; de Moura, Rodrigo L; Valentin, Jean Louis; Tenenbaum, Denise R; Paranhos, Rodolfo; do Valle, Rogério de A B; Vicente, Ana Carolina P; Amado Filho, Gilberto M; Pereira, Renato Crespo; Kruger, Ricardo; Rezende, Carlos E; Thompson, Cristiane C; Salomon, Paulo S; Thompson, Fabiano L

    2015-01-01

    Guanabara Bay is the second largest bay in the coast of Brazil, with an area of 384 km(2). In its surroundings live circa 16 million inhabitants, out of which 6 million live in Rio de Janeiro city, one of the largest cities of the country, and the host of the 2016 Olympic Games. Anthropogenic interference in Guanabara Bay area started early in the XVI century, but environmental impacts escalated from 1930, when this region underwent an industrialization process. Herein we present an overview of the current environmental and sanitary conditions of Guanabara Bay, a consequence of all these decades of impacts. We will focus on microbial communities, how they may affect higher trophic levels of the aquatic community and also human health. The anthropogenic impacts in the bay are flagged by heavy eutrophication and by the emergence of pathogenic microorganisms that are either carried by domestic and/or hospital waste (e.g., virus, KPC-producing bacteria, and fecal coliforms), or that proliferate in such conditions (e.g., vibrios). Antibiotic resistance genes are commonly found in metagenomes of Guanabara Bay planktonic microorganisms. Furthermore, eutrophication results in recurrent algal blooms, with signs of a shift toward flagellated, mixotrophic groups, including several potentially harmful species. A recent large-scale fish kill episode, and a long trend decrease in fish stocks also reflects the bay's degraded water quality. Although pollution of Guanabara Bay is not a recent problem, the hosting of the 2016 Olympic Games propelled the government to launch a series of plans to restore the bay's water quality. If all plans are fully implemented, the restoration of Guanabara Bay and its shores may be one of the best legacies of the Olympic Games in Rio de Janeiro.

  11. Environmental and Sanitary Conditions of Guanabara Bay, Rio de Janeiro

    Science.gov (United States)

    Fistarol, Giovana O.; Coutinho, Felipe H.; Moreira, Ana Paula B.; Venas, Tainá; Cánovas, Alba; de Paula, Sérgio E. M.; Coutinho, Ricardo; de Moura, Rodrigo L.; Valentin, Jean Louis; Tenenbaum, Denise R.; Paranhos, Rodolfo; do Valle, Rogério de A. B.; Vicente, Ana Carolina P.; Amado Filho, Gilberto M.; Pereira, Renato Crespo; Kruger, Ricardo; Rezende, Carlos E.; Thompson, Cristiane C.; Salomon, Paulo S.; Thompson, Fabiano L.

    2015-01-01

    Guanabara Bay is the second largest bay in the coast of Brazil, with an area of 384 km2. In its surroundings live circa 16 million inhabitants, out of which 6 million live in Rio de Janeiro city, one of the largest cities of the country, and the host of the 2016 Olympic Games. Anthropogenic interference in Guanabara Bay area started early in the XVI century, but environmental impacts escalated from 1930, when this region underwent an industrialization process. Herein we present an overview of the current environmental and sanitary conditions of Guanabara Bay, a consequence of all these decades of impacts. We will focus on microbial communities, how they may affect higher trophic levels of the aquatic community and also human health. The anthropogenic impacts in the bay are flagged by heavy eutrophication and by the emergence of pathogenic microorganisms that are either carried by domestic and/or hospital waste (e.g., virus, KPC-producing bacteria, and fecal coliforms), or that proliferate in such conditions (e.g., vibrios). Antibiotic resistance genes are commonly found in metagenomes of Guanabara Bay planktonic microorganisms. Furthermore, eutrophication results in recurrent algal blooms, with signs of a shift toward flagellated, mixotrophic groups, including several potentially harmful species. A recent large-scale fish kill episode, and a long trend decrease in fish stocks also reflects the bay’s degraded water quality. Although pollution of Guanabara Bay is not a recent problem, the hosting of the 2016 Olympic Games propelled the government to launch a series of plans to restore the bay’s water quality. If all plans are fully implemented, the restoration of Guanabara Bay and its shores may be one of the best legacies of the Olympic Games in Rio de Janeiro. PMID:26635734

  12. Avaliação da Poluição Antrópica Usando Padrão de Distribuição deEspécies de Foraminíferos Provenientes de Testemunhos da Baía de Guanabara, RJ.

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    Brígida Orioli Figueira

    2007-07-01

    Full Text Available This work presents a study of benthic foraminifera recovered from three cores collected near the Paquetá island, in the Guanabara bay, Rio de Janeiro, southeastern Brazil. The cores have different sizes and were subsampled in centimetric intervals. The recovered benthic foraminiferal assemblages were thoroughly identified, in order to carry out an ecological study towards reconstructing the environmental evolution of the studied area during the recent historical period and assessing the response of the foraminiferal assemblages to the locally occurring natural and/or anthropogenic impacts. The microfaunal distribution results were correlated with the sedimentological and TOC (Total Organic Carbon data to understand the environmental trends and evaluate the varying patterns of human-related pollution in the area. 14C isotopic date was taken at the bottom of one core, to help for the local sediment accumulation rates. Species diversity values were low in all samples, whereas the TOC values were commonly high, increasing dramatically upwards across the cores.The dominant species in that area of the Guanabara bay were Ammonia tepida, Elphidium spp. and Buliminella elegantissima. Patterns of the distributions of these species confirm the influence of the anthropogenic pollutiontoward the top of the cores.

  13. Reconstructing historical changes in combustion patterns by means of black carbon and PAH evaluation in dated sediments from Guanabara Bay, Rio de Janeiro

    International Nuclear Information System (INIS)

    Mauad, Cristiane R.; Wagener, Angela de L. R.; Farias, Cassia de O.; Carreira, Renato S.; Godoy, Jose M.; Scofield, Arthur de L.; Vasconcelos, Crisogono

    2013-01-01

    The accumulation history of combustion products from the metropolitan area around Guanabara Bay was evaluated using black carbon and polycyclic aromatic hydrocarbons as indicators. BC concentration varied between 0.23 and 0.51%, with an increasing mass accumulation tendency over the last 118 years, whereas a decrease in the values of the ratio BC/organic carbon was observed in the upper sediment layers, probably reflecting the enhancement of bay's eutrophication process in the last 30 years. Higher concentrations of pyrolytic PAH were observed between 1925 and 1976, being consistent with the subsequent deforestation, urbanization, and industrialization that occurred in the Guanabara basin in the period. These PAHs were best characterized by the BFl/(BFl+BePy) diagnostic ratio. The data obtained allowed the characterization of the main events that influenced the combustion patterns in the region: burning of biomass and fossil fuel, economic crisis of 1970 and 1990 and the introduction of ethanol in the Brazilian energetic matrix. (author)

  14. Guanabara Bay and Pecem LNG flexible metering systems

    Energy Technology Data Exchange (ETDEWEB)

    Torres, Vinicus Roberto C.; Carvalho, Gustavo L.A.; Bruel, Edson L.; Santana, Jose P.C. de; Vidal, Lud C.C.N. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2009-12-19

    This work presents to the community the metering systems installed in the Liquefied Natural (LNG) Gas Flexible Terminals of the Pecem Port and Guanabara Bay. A brief description of the Terminals facilities and its operation is firstly made to provide a background of the systems discussed. Then, the LNG custody transfer metering system, the operational control metering system, the energy balance of the LNG transferring system and the Natural Gas custody transfer metering system - that are our systems of interest - are described in detail. It is intended to use the philosophy adopted in the Guanabara Bay and Pecem Flexible Terminals design as a standard to future installations, integrated with improvements brought by the operation experience that will be obtained in those terminals. (author)

  15. Bacterial production in Guanabara Bay (Rio de Janeiro, Brazil evaluated by ³H-leucine incorporation

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    Alessandra M. Gonzalez

    2000-01-01

    Full Text Available The aim of this work was to evaluate the necessary ³H-leucine concentration to estimate bacterial production in Guanabara Bay through saturation curves. A second aim was to collect preliminary data of bacterial production in two distinct sites corresponding to different water qualities: Urca inlet and Governador Island. Saturation curves were made with water samples taken at the main circulation channel of the bay, Paquetá Island, and the two sites mentioned before. The ³H-leucine curves showed similar pattern for all studied areas, indicating the ideal isotope concentration to be 10 nM. Bacterial biomass production ranged from 0.40 to 4.53 µgC L-1 h-1 in Urca and from 3.86 to 73.72 µgC L-1 h-1 in Governador Island indicating the relationship between nutrients and organic matter supply and bacterial productivity. This work is an important reference for studies on trophodynamics, biogeochemical cycles and modelling in Guanabara Bay.O objetivo desse trabalho foi realizar curvas de saturação a fim de otimizar a concentração de ³H-leucina necessária para avaliar produção bacteriana na Baía de Guanabara. Objetivou-se ainda a aquisição de dados preliminares de produção bacteriana em dois locais distintos em termos de qualidade de água : enseada da Urca e Ilha do Governador. As amostras para as curvas foram obtidas na região do Canal Central e na Ilha de Paquetá, além dos dois locais de coleta citados acima. Seguiu-se a metodologia descrita por Kirchman et al. (1985 e modificada por Smith & Azam (1992. As curvas de ³H-leucina mostraram um padrão semelhante para todas as áreas estudadas, indicando a concentração ótima de isótopo de 10 nM. A produção de biomassa bacteriana variou de 0,40 a 4,53 µgC L-1 h-1 na Urca e de 3,86 a 73,72 µgC L-1 h-1 na Ilha do Governador confirmando a relação entre a disponibilidade de nutrientes e matéria orgânica e o aumento da produtividade bacteriana. Essas análises poderão ser

  16. Palynological analysis of a sediment core obtained in Guanabara Bay, Rio de Janeiro, Brazil

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    Cintia F. Barreto

    2007-06-01

    Full Text Available The sediment of a core collected about 2 km north of Paquetá Island, Guanabara Bay, was submitted to pollen analysis, in order to recognize the dynamics of the regional vegetation, and the anthropic influence. Radiocarbon dating of a sample next to the bottom of the core indicates an age of 4.210 ± 40 14C yrs B.P (calibrated age. It was possible to establish four palynological zones. Starting at the bottom of the core, a decrease in palynomorph concentration, the presence of degraded pollen grains and spores, and the predominance of ombrophilous forest pollen grains were observed in the basal portion of Zone I. These data may indicate the presence of an exuberant Atlantic Forest, dominated by a marine regressive event. The concentration of well-preserved palynomorphs increased in Zone II, with the predominance of the ombrophilous forest vegetation also, and an expressive increase of hygrophytes, indicating more humid environmental conditions. Palynomorph concentration decreased again toward the top of Zone III, and the field vegetation was predominant. In the upper Zone IV occurred a strong decrease in pollen and spore concentration, with predominance of field vegetation also, and the appearance of exotic pollen grains, showing the anthropic influence at this time.Sedimentos de um testemunho de sondagem coletado a 2 km ao norte da Ilha de Paquetá, Baía de Guanabara foram submetidos à análise palinológica, com o objetivo de reconhecer e interpretar a dinâmica temporal da vegetação na região e a influência antrópica. A datação radiocarbônica realizada próxima à base do testemunho indicou uma idade de 4.210 ± 40 anos AP (idade calibrada. Os resultados possibilitaram determinar quatro zonas palinológicas. Na Zona I, a mais basal, observou-se o decréscimo da concentração total de palinomorfos em direção ao topo e elevada deposição de grãos de pólen e esporos degradados, com o predomínio de grãos de pólen concernentes

  17. Caracterização da Contaminação por Petróleo e seus Derivados na Baía de Guanabara: Aplicação de Técnicas Organogeoquímicas e Organopetrográficas

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    João Graciano Mendonça Filho

    2003-01-01

    Full Text Available The Guanabara Bay is the second bigger bay of the Brazilian coast. The bay is oneof most beautiful of the world and shelters an ample and protected natural environment,preponderant factor for the development of the region. Due the pollution of this ecosys-tem, today, the bay represents an important focus of environmental interest. In order todeterminate the preservation degree of the organic components of bottom sediments from Guanabara Bay, ninety-two samples were collected from these sediments, however, pre-liminarily, twenty-five samples were analyzed. These twenty-five samples were submittedto techniques of organic geochemistry (Total Organic Carbon - TOC and Rock-Evalpyrolysis to determinate the amount and quality of the organic matter, and microscopy(transmitted white light and reflected ultraviolet light. The TOC values of the twenty-fivesamples range from 0.04 to 6.1% indicating the high preservation degree of the organicmatter. The Rock- Eval pyrolysis data show Hydrogen Index (HI values from 25 to 249mg HC/gCOT; S1 values ranges from 0,02 to 5,6 mg HC/gR; Production Index (PI rise up0,5. The results of the microscopy investigation showed that occur a predominance ofamorphous organic matte (AOM over the palynomorphs and phytoclasts. The liptiniticmaterial showed a light yellow-greenish yellow fluorescence color. The percentages ofAOM, the TOC values and fluorescence color indicate a high degree of preservation of theorganic matter. The integration of the results from organic geochemistry and microscopytechniques indicate that the sediments of the Baía de Guanabara present very high hydro-carbon pollution, deposited in dysoxic-anoxic environment.

  18. Toxicity Identification Evaluation (TIE) of Belford Roxo industrial plant effluent and its contribution in water quality of downstream of Sarapui River, Iguacu River sub-basin, Baia da Guanabara Basin, RJ, Brazil

    International Nuclear Information System (INIS)

    Pires, Luiz Eduardo Botelho

    2006-01-01

    The quality of Belford Roxo Industrial Plant effluent and water from Sarapui River were evaluated with Daphnia similis, Ceriodaphnia dubia and Danio rerio acute and chronic toxicity tests. In association with the ecotoxicological monitoring, the Toxicity Identification Evaluation procedure were performed and the identification of the toxic compounds was possible. The Chloride ion was identified as the major toxic compound in the effluent with additional effects of Metals, Ammonium and Sulfide. For the Sarapui River, the compounds of Phosphorus and Nitrogen were identified as the major toxic compounds with addictive effects of Metals, Ammonium and Sulfide. Although the environmental impact estimation based on the effluent toxicity suggests a minor impact on the water quality of Sarapui River, this was already sufficiently contaminated to make impracticable the establishment of an aquatic community. The constant discharge of untreated sludge promotes the eutrophication of this water body and makes impossible the equilibrium of this ecosystem. (author)

  19. Population structure of the lancelet Branchiostoma caribaeum (Cephalochordata: Branchiostomidae in the Baía de Guanabara, Rio de Janeiro, southeastern Brazil Estrutura populacional do anfioxo Branchiostoma caribaeum (Cephalochordata: Branchiostomidae na Baía de Guanabara, sudeste do Brasil

    Directory of Open Access Journals (Sweden)

    Luis F. B. da Silva

    2008-12-01

    Full Text Available Population structure of the lancelet Branchiostoma caribaeum Sandevall, 1853 was studied in four surveys, corresponding to austral seasons, in a tropical bay, southeast of Brazil. Abundance was higher in the spring and was positively correlated to coarse sediments, limiting its occurrence to some sectors of the sampling area. Body length and biomass differed seasonally but not between sexes. Sexually mature individuals occurred in all seasons, suggesting continuous breeding that is typical of tropical species. Variation in the frequency of small specimens indicates temporal differences in the intensity of breeding. The body length of recruits differed from other population of lancelets and the small length which B. caribaeum attained sexual maturity in Guanabara Bay may be related to local environmental stress or the great availability of food.A estrutura populacional do anfioxo Branchiostoma caribaeum Sandevall, 1853 foi analisada em quatro campanhas abrangendo todas as estações do ano, na Baía de Guanabara, sudeste do Brasil. A abundância de indivíduos foi maior na primavera e positivamente correlacionada com sedimentos grossos, tendo sua distribuição limitada a alguns setores da área amostral. O tamanho corpóreo e a biomassa diferiram sazonalmente, mas não entre os sexos. Indivíduos sexualmente maduros ocorreram em todas as estações do ano, sugerindo uma reprodução contínua, típica de espécies tropicais. Variações na freqüência de ocorrência de espécimes pequenos indicaram diferenças temporais na intensidade da reprodução. O tamanho corpóreo dos recrutas diferiu de populações de anfioxos de outros locais. O menor tamanho em que B. caribaeum atinge a maturidade sexual na Baía da Guanabara pode estar relacionada ao estresse ambiental ou à grande disponibilidade de alimento do local.

  20. Toxicity Identification Evaluation (TIE) of Belford Roxo industrial plant effluent and its contribution in water quality of downstream of Sarapui River, Iguacu River sub-basin, Baia da Guanabara Basin, RJ, Brazil; Avaliacao e identificacao da toxicidade (Toxity Identification Evaluation - TIE) do efluente liquido do polo industrial de Belford Roxo, RJ, e sua contribuicao na qualidade das aguas do corso inferior do Rio Sarapui, sub-bacia do Rio Iguacu, Bacia da Baia da Guanabara, RJ, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Pires, Luiz Eduardo Botelho

    2006-07-01

    The quality of Belford Roxo Industrial Plant effluent and water from Sarapui River were evaluated with Daphnia similis, Ceriodaphnia dubia and Danio rerio acute and chronic toxicity tests. In association with the ecotoxicological monitoring, the Toxicity Identification Evaluation procedure were performed and the identification of the toxic compounds was possible. The Chloride ion was identified as the major toxic compound in the effluent with additional effects of Metals, Ammonium and Sulfide. For the Sarapui River, the compounds of Phosphorus and Nitrogen were identified as the major toxic compounds with addictive effects of Metals, Ammonium and Sulfide. Although the environmental impact estimation based on the effluent toxicity suggests a minor impact on the water quality of Sarapui River, this was already sufficiently contaminated to make impracticable the establishment of an aquatic community. The constant discharge of untreated sludge promotes the eutrophication of this water body and makes impossible the equilibrium of this ecosystem. (author)

  1. Geomicrobiology and Biochemical Composition of Two Sediment Cores from Jurujuba Sound - Guanabara Bay – SE Brazil

    Directory of Open Access Journals (Sweden)

    Mirian Araújo Carlos Crapez

    2010-01-01

    Full Text Available O objetivo deste trabalho foi quantificar os biopolímeros associados as enzimas esterase e identificar a atividade respiratória das bactérias em dois testemunhos amostrados na Enseada de Jurujuba, Baía de Guanabara, Rio de Janeiro. A concentração dos biopolímeros foram dez vezes menos do que o relatado na literatura, tornando necessária a criação e estabelecimento de novos índices dos níveis de eutrofização, compatível com os sistemas costeiros brasileiros. A relação representante bioquímicas dos testemunhos foi equivalente aos dados disponíveis para ambientes costeiros marinhos. A quantidade de enzimas esterases no sedimento mostrou que a mineralização de biopolímeros está em processo contínuo, mesmo com a preferência do metabolismo anaeróbico. Apesar do fato, dos estudos em geomicrobiologia serem incipientes, os resultados deste estudo indicam a possível aplicação da microbiologia para proporcionar uma melhor compreensão dos processos geoquímicos em ambiente tropical.

  2. Reconstructing historical changes in combustion patterns by means of black carbon and PAH evaluation in dated sediments from Guanabara Bay, Rio de Janeiro

    Energy Technology Data Exchange (ETDEWEB)

    Mauad, Cristiane R.; Wagener, Angela de L. R.; Farias, Cassia de O.; Carreira, Renato S.; Godoy, Jose M.; Scofield, Arthur de L., E-mail: angela@puc-rio.b [Pontificia Universidade Catolica do Rio de Janeiro (LABMAM/PUC-Rio), Rio de Janeiro, RJ (Brazil). Departamento de Quimica. Lab. de Estudos Marinhos e Ambientais; Ruiz, Naira M. S.; Menezes, Sonia M.C. de [Centro de Pesquisas e Desenvolvimento Leopoldo A. Miguez de Melo (CENPES/PETROBRAS), Rio de Janeiro, RJ (Brazil); Vasconcelos, Crisogono [Laboratory of Geomicrobiology, ETH/Zuerich, Zuerich (Switzerland)

    2013-11-15

    The accumulation history of combustion products from the metropolitan area around Guanabara Bay was evaluated using black carbon and polycyclic aromatic hydrocarbons as indicators. BC concentration varied between 0.23 and 0.51%, with an increasing mass accumulation tendency over the last 118 years, whereas a decrease in the values of the ratio BC/organic carbon was observed in the upper sediment layers, probably reflecting the enhancement of bay's eutrophication process in the last 30 years. Higher concentrations of pyrolytic PAH were observed between 1925 and 1976, being consistent with the subsequent deforestation, urbanization, and industrialization that occurred in the Guanabara basin in the period. These PAHs were best characterized by the BFl/(BFl+BePy) diagnostic ratio. The data obtained allowed the characterization of the main events that influenced the combustion patterns in the region: burning of biomass and fossil fuel, economic crisis of 1970 and 1990 and the introduction of ethanol in the Brazilian energetic matrix. (author)

  3. Study of heavy metal concentration and partitioning in the Estrela River: implications for the pollution in Guanabara Bay - SE Brazil

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    Carlos M. A. Rangel

    2011-09-01

    Full Text Available In this study, the geochemical analysis of ten sediment samples collected along the fluvial system of the Estrela River, which flows into the northern portion of Guanabara Bay, shows the presence of anthropogenic impacts in this area. Concentrations of Fe, Mn, Zn, Cu, Pb, Cr and Ni obtained were slightly higher, when compared with values found innatural environments. The particle size and organic matter content in most of the analyzed stations showed featuresnot conducive to the accumulation of pollutants due to the low organic matter content and the strong presence ofsand fraction. There was also the fractionation of heavy metals in sediments and it was found the prominence ofresidual and reducible phase, besides the significant occurrence of organic fractions in some analyzed stations. Thesefactors, thus, highlight the potential risks of contamination, where the metals associated with the organic phase canbecome bioavailable in processes of dissolution, provided by physico-chemical changes that can occur in this aquaticenvironment.Neste estudo, analises geoquímicas de dez amostras de sedimentos coletadas ao longo do sistema fluvial do rio Estrela, que deságua na porção norte da Baía de Guanabara, evidenciam a presença de impactos antropogênicos nesta área. As concentrações de Fe, Mn, Zn, Cu, Pb, Cr e Ni obtidas foram ligeiramente elevadas, quando comparados com valores encontrados em ambientes naturais. A granulometria e o teor de matéria orgânica na maioria dos pontos analisados mostraram características não favoráveis à acumulação destes poluentes devido à baixa concentração de matéria orgânica e à forte presença de fração areia. Realizou-se também o fracionamento dos metais pesados nos sedimentos e constatou-se a preeminência da fase residual e redutível, além da ocorrência significativa da fração orgânica em alguns pontos analisados. Estes fatores evidenciam, portanto, riscos potenciais de contamina

  4. ESTUDO GEOAMBIENTAL DAS CONCENTRAÇÕES DE HIDROCARBONETOS DE PETRÓLEO (POLICÍCLICOS AROMÁTICOS – HPAs) AO LONGO DO RIO ESTRELA, BAÍA DE GUANABARA – RJ

    OpenAIRE

    Carlos Marclei Arruda Rangel; José Antônio Baptista Neto; Estefan Monteiro da Fonseca

    2012-01-01

    DOI 10.12957/tamoios.2012.5083RESUMO Neste estudo, análises geoquímicas de dez amostras de sedimentos coletados ao longo do sistema fluvial do Rio Estrela, localizado ao norte da Baía de Guanabara, evidenciam a presença de impactos antropogênicos nesta área. As concentrações de hidrocarbonetos policíclicos aromáticos (HPAs) obtidas mostraram-se ligeiramente elevadas, quando comparadas com valores encontrados em ambientes naturais. Os HPAs foram analisados nos sedimentos ao longo da bacia do R...

  5. Idade e crescimento de Callinectes danae e C. ornatus (Crustacea, Decapoda na Baía de Guanabara, Rio de Janeiro, Brasil Age and growth of Callinectes danae and C. ornatus (Crustacea, Decapoda in Guanabara Bay, Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Karina A. Keunecke

    2008-06-01

    Full Text Available Callinectes danae Smith, 1869 e C. ornatus Ordway, 1863 constituem uma parcela importante da produção pesqueira na Baía de Guanabara. Ambas espécies compõem uma fração significativa da fauna-acompanhante sendo exaustivamente descartadas pelas pescarias de arrasto de camarões na costa brasileira. As curvas de crescimento de C. danae e C. ornatus foram calculadas por meio da análise de progressão modal. Para estimar os parâmetros biológicos, foi aplicado o modelo de crescimento de Bertalanffy e para estimar a longevidade foi usada a sua fórmula inversa. As curvas de crescimento foram: ♂ LC = 120 (1 - e -0,005t , ♀ LC = 113 (1 - e -0,005t; ♂ LC = 94 (1 - e -0,005t e ♀ LC = 110 (1 - e -0,005t , respectivamente para C. danae e C. ornatus. A longevidade alcançada para as duas espécies foi em torno de 2,5 anos, além de validar as curvas de crescimento. O estudo do crescimento em crustáceos é de extrema importância, pois além de fornecer a informação biológica básica para o grupo, os parâmetros estimados subsidiam o ordenamento e manejo pesqueiro das espécies exploradas.Callinectes danae Smith, 1869 and C. ornatus Ordway, 1863 constitute an important portion from the fishing products at Guanabara Bay. Both species compose a significant by-catch fraction being a lot discarded during shrimp trawlings along Brazilian coast. Growth curves were estimated by modal progression analysis. For the biological parameters it was applied the Bertalanffy growth function and for the age it was used its inverse formula. Growth curves of C. danae and C. ornatus were respectively: ♂ LC = 120 (1 - e -0,005t, ♀ LC = 113 (1 - e -0,005t; ♂ LC = 94 (1 - e -0,005t and ♀ LC = 110 (1 - e -0,005t. The age for both species reached around 2.5 years, besides to confirm growth curves. Growth study in crustaceans is very important, because besides supplying biological information it subsidizes fishery management for exploted species.

  6. Stratigraphic review of the Parecis Basin, Amazonian Region; Revisao estratigrafica da Bacia dos Parecis - Amazonia

    Energy Technology Data Exchange (ETDEWEB)

    Bahia, Ruy B.C. [Companhia de Pesquisa de Recursos Minerais (CPRM/REPO), Porto Velho, RO (Brazil). Servico Geologico do Brasil. Residencia de Porto Velho], email: ruybahia@pv.cprm.gov.br; Martins-Neto, Marcelo A.; Barbosa, Maria Silvia C. [Universidade Federal de Ouro Preto (DEGEO/UFOP), MG (Brazil). Escola de Minas. Dept. de Geologia], emails: marcelo@nupetro.com.br, silvia@nupetro.com.br; Pedreira, Augusto J. [Companhia de Pesquisa de Recursos Minerais (CPRM/Sureg-SA), Salvador, BA (Brazil). Servico Geologico do Brasil. Superintendencia de Salvador], email: ajpedreira@terra.com.br

    2006-12-15

    The Parecis basin is located in central-western Brazil, on the southwestern part of the Amazon Craton, between the Rondonia and Guapore fold belts. From west to east, the Parecis basin can be divided into three tectonic-sedimentary domains: a tectonic low to the west, a central compartment characterized by a negative gravimetric anomaly, and a interior sag to the east. During the Paleozoic (Ordovician to Early Permian), the Amazon region was affected by an extensional event, when the Cacoal, Furnas, Ponta Grossa, Pimenta Bueno e Fazenda da Casa Branca formations were deposited in the Parecis basin. The Cacoal Formation is composed of conglomerates, wackes, shales and dolomites, interpreted as deposited in alluvial fans, deltas and lakes. The pebbly sandstones and shales of the Furnas and Ponta Grossa formations are interpreted as deposited, respectively, in tidal flats and marine environments. Glacial or glacial-influenced environments are suggested for the conglomerates, sandstones and shales of the Pimenta Bueno and Fazenda da Casa Branca formations. The sedimentary record of Parecis basin shows a stratigraphic gap from Permian to Triassic. Mesozoic volcanic and sedimentary successions record another extensional event in the Amazon region. This event is represented in the Parecis basin by the eolian sandstones of the Jurassic Rio Avila Formation and the basalts of the Anari and Tapirapua formations. The sandstones of the Parecis Group have been deposited during the Cretaceous in fluvial and eolian environments. Cretaceous kimberlite bodies cut the sediments in the northeastern and southeastern parts of the Parecis basin. Cenozoic sandstones and mud stones cover unconformably the deposits of the Parecis basin. (author)

  7. Hydrogeological monitoring in Riberao da onca basin located in out croup area of Guarani Aquifer

    International Nuclear Information System (INIS)

    Wendland, E.; Andrade Gomes Barreto, C.; Gomes, L. . E mail:ew@sc.usp.br

    2004-01-01

    Objective of this project is the estimation of the direct recharge rate of the Guarani Aquifer System, based on a water balance study in the Ribeirao da Onca basin, located in the outcrop area of the Botucatu Formation, in Brotas-SP (Brazil). It is intended to monitor the groundwater level behavior and the superficial outflow from the basin, as function of the registered precipitation and evapotranspiration, during two hydrological cycles. The results to be obtained are of general interest in the context of the Project for Environmental Protection and Integrated Sustainable Management of the Guarani Aquifer System, since understanding the process and rate of direct recharge are essential information for any initiative for management of the aquifer. In this work, the main activities proposed are presented [es

  8. Intra-metropolitan inequalities in Rio de Janeiro and the Guanabara Bay cleaning programme

    DEFF Research Database (Denmark)

    Ribeiro, Gustavo; Silva, Victor

    2005-01-01

    This paper investigates the impacts of the Guanabara Bay Cleaning Programme (GBCP) on the Rio de Janeiro urban development process. Based on the magnitude of the budget of the programme (HOW MUCH?) and its relevance to the improvement of the life quality of urban dwellers, the main discussion of ...... and implementation problems counteract its positive impact and contribute to reaffirm the current spatial segregated pattern....

  9. The phytoplankton of Guanabara Bay, Brazil: I. historical account of its biodiversity

    OpenAIRE

    Villac, Maria Célia; Tenenbaum, Denise Rivera

    2010-01-01

    This is a historical account of the biodiversity of phytoplankton in Guanabara Bay, Brazil. It is based on 57 publications that refer to sampling carried out between 1913 and 2004. The publications included are those with direct microscopic identification. Although 80% of the studies focus on ecological issues that tend to mention only the most abundant species, 24 publications provide comprehensive check-lists at the species level, especially of taxa > 20 μm. The inventory of species include...

  10. Superficial distribution of aromatic compounds and geomicrobiology of sediments from Suruí Mangrove, Guanabara Bay, RJ, Brazil

    Directory of Open Access Journals (Sweden)

    Luiz F. Fontana

    2010-12-01

    Full Text Available The distribution of selected aromatic compounds and microbiology were assessed in superficial sediments from Suruí Mangrove, Guanabara Bay. Samples were collected at 23 stations, and particle size, organic matter, aromatic compounds, microbiology activity, biopolymers, and topography were determined. The concentration of aromatic compounds was distributed in patches over the entire mangrove, and their highest total concentration was determinated in the mangrove's central area. Particle size differed from most mangroves in that Suruí Mangrove has chernies on the edges and in front of the mangrove, and sand across the whole surface, which hampers the relationship between particle size and hydrocarbons. An average @ 10% p/p of organic matter was obtained, and biopolymers presented high concentrations, especially in the central and back areas of the mangrove. The biopolymers were distributed in high concentrations. The presence of fine sediments is an important factor in hydrocarbon accumulation. With high concentration of organic matter and biopolymers, and the topography with chernies and roots protecting the mangrove, calmer areas are created with the deposition of material transported by wave action. Compared to global distributions, concentrations of aromatic compounds in Suruí Mangrove may be classified from moderate to high, showing that the studied area is highly impacted.A distribuição de compostos aromáticos selecionados e a microbiologia foram avaliados em sedimentos superficiais do Manguezal de Suruí, Baía de Guanabara. Amostras foram coletadas em 23 pontos e determinados a granulometria, matéria orgânica, compostos aromáticos, atividade microbiológica, biopolímeros e a topografia. A concentração dos compostos aromáticos foi distribuída em manchas por todo o manguezal e sua concentração total mais elevada foi encontrada na área central do manguezal. A granulometria diferiu da maioria dos manguezais, uma vez que no

  11. MORPHOMETRY OF RELIEF IN THE RIO DA CACHOEIRA BASIN IN THE HANDLING PLAN OF FLORESTA NACIONAL DE PASSA QUATRO (MG

    Directory of Open Access Journals (Sweden)

    Roberto MARQUES NETO

    2008-12-01

    Full Text Available This article shows morphometric aspects of the relief (declivity, vertical dissection and horizontal dissection in the basin of the Rio da Cachoeira (Waterfall River, area of the Floresta Nacional de Passa Quatro (MG under coordination of the IBAMA as subsidy to the handling plan.

  12. Diatomáceas de tanques do cactário do Jardim Botânico, Guanabara, Brasil

    Directory of Open Access Journals (Sweden)

    Luis Tavares de Lyra

    1974-01-01

    Full Text Available O autor analisou a microflora de três tanques situados no Cactário do Jardim Botânico, Rio de Janeiro, Guanabara. Tanque nº 1. Apresentou desenvolvimento muito intenso da microfibra nos mseses mais frios. As diatomáceas foram muito freqüentes. As espécies indicadoras de saprobidade foram as seguintes: Gomphonema gracile Ehr., pinnularia maior. (kutz Cleve, Gomphonema parvulum (kutz Grunow, Navicula mutica Kutz., Pinnularia borealis Ehr., Pinnularia microstauron (Ehr Cleve, Pinnularia acrospheria Breb., Hantzschia amphioxys (Ehr Grunow, Nitzschia palea Kutz., Eutonia pectinalis (Kutz Rabenh. Tanque nº 2. As diatomáceas indicadoras de águas contaminadas, anotamos como segue: Eutonia pectinalis (Kutz Rabenh., Gomphonema parvulum (kutz Grunow, Hanstzschia amphioxys (Ehr Grunow, Navicula mutica Kutz, Pinnularia borealis Ehr., Pinnularia maior (Kutz Cleve, Pinnularia microstauron (Ehr Cleve. Tanque nº 3. Foi bastante reduzida a freqüência da microflora. Comparando-o com os tanques nº 1 e 2, as diatomáceas e clorofícias observadas, mostraram-se diminuídas nos meses mais quentes. Encontramos as seguintes espécies oligosaprobias: Eunotia pectinalis (Kutz Rabenh., Gomphonema gracile ehr., Gomphonema parvulum (Kutz Grunow Hantzschia amphioxys (Ehr Grunow, Pinnularia borealis Ehr., Pinnularia maior (Kutz Cleve. Foram consideradas também as clorofíceas quanto ao regime de saprobidade do material estudado. Eutonia augusta f. crenulata Cleve-Euler e Eutonia veneris var. exsecta Clever-Euler encontradas em nossas amostras, são novas para o Brasil. Um total de 71 espécies foram determinadas de 21 coletas realizadas durante o período de 36 meses.The author analysed the microflorafrom three ponds situated in the Cactarium from the Botanical Garden of Rio de Janeiro, Guanabara. Pond nº 1 - This pond showed a very intensive development of the microflora in the coldermonths. The diatoms were very frequent. Those diatoms that indicate saprobic

  13. Resumos dos Trabalhos Apresentados em Painéis no Workshop Baía de Guanabara, IGEO/UFRJ - 2002

    Directory of Open Access Journals (Sweden)

    2003-01-01

    Full Text Available 139 Anuário do Instituto de Geociências - UFRJ Volume 26 / 2003 Avaliação dos Efeitos Ambientais e Ecológicos Referentes ao Acidente Ocorrido no Oleoduto Pe-II (Reduc-Petrobrás na Baía de Guanabara - RJ. Patrícia P. B. Eichler (Laboratório de Ciências Marinha/UNISUL1, Beatriz B. Eichler (Instituto Oceanográfico/IOUSP, Felipe M. Pimenta (Labotratório de Hidráulica Marítima/ UFSC, Patrícia B. P. K. Cardoso (IOUSP, Evelyn da Rocha Mendes Pereira (IOUSP. 1Rua: João Pessoa, 100, 88790-100, Laguna, SC, peichler@ceres.io.usp.br Em janeiro de 2000, o acidente no oleoduto PE-II, derramou 1292 m3 de óleo combustível (MF380 ao norte da ilha do Governador. Para avaliar os danos ambientais e ecológicos ocorridos em função do acidente foram coletadas 26 amostras de sedimento no inverno/2000 (6 a 17/07/2000, 6 meses após o acidente e repetida a mesma malha amostral no verão/2001 (1 a 15/02/2001, 1 ano após o acidente. Com base nos mapas de contorno de freqüência relativa das espécies de foraminíferos e teores de pH e oxigênio foi possível avaliar o grau de hipoxia (O2<2mg/l e de acidez no sedimento correlacionando-os à dinâmica populacional desses microrganismos. No inverno, próximo a REDUC, observa-se o mais baixo valor de pH (1,81, indicando acidez do sedimento devido ao aumento de H2S liberado por ocasião do derramamento de óleo. Com relação aos teores de oxigênio no inverno e no verão, a entrada da baía é o ambiente mais oxigenado. Os locais menos oxigenados estão localizados na parte nordeste, próxima a APA de Guapimirim, e na parte noroeste, próximo à REDUC. No inverno, observa-se que o teor de oxigênio na coluna de água próximo à REDUC apresenta valor muito baixo, indicando que os processos químicos envolvidos na quebra do óleo além de diminuir o pH, consumiram também, o teor de oxigênio da água. No verão, os valores obtidos para o oxigênio de fundo nas estações da região central e nordeste de

  14. HDPE (High Density Polyethylene) pipeline and riser design in Guanabara Bay: challenges and solutions

    Energy Technology Data Exchange (ETDEWEB)

    Bomfimsilva, Carlos; Jorge, Joao Paulo Carrijo; Schmid, Dominique; Gomes, Rodrigo Klim [INTECSEA, Sao Paulo, SP (Brazil); Lima, Alexander Piraja [GDK, Salvador, BA (Brazil)

    2009-12-19

    Worldwide shipments of plastic pipes are forecasted to increase 5.2% per year since 2008, being commonly used for water supply and sewage disposal. The HDPE (High Density Polyethylene) pipes have been applied recently to deliver potable water and fire fighting water for the main pier of the LNG system in Guanabara Bay, Rio de Janeiro. The system contains three sizes of pipe outside diameter, 110 mm and 160 mm for water supply, and 500 mm for the fire fighting system. The main design challenges of the pipeline system included providing on-bottom stability, a suitable installation procedure and a proper riser design. The on-bottom stability calculations, which are quite different from the conventional steel pipelines, were developed by designing concrete blocks to be assembled on the pipeline in a required spacing to assure long term stability, knowing that plastic pipes are buoyant even in flooded conditions. The installation procedure was developed considering the lay down methodology based on surface towing technique. The riser was designed to be installed together with additional steel support structure to allow the entire underwater system to have the same plastic pipe specification up to the surface. This paper presents the main challenges that were faced during the design of the HDPE pipelines for the LNG system in Guanabara Bay, addressing the solutions and recommendations adopted for the plastic underwater pipeline system.

  15. Impact of deforestation on local precipitation patterns over the Da River basin, Vietnam

    Science.gov (United States)

    Anghileri, Daniela; Spartà, Daniele; Castelletti, Andrea; Boschetti, Mirco

    2014-05-01

    Change in land cover, e.g. from forest to bare soil, might severely impact the hydrological cycle at the river basin scale by altering the balance between rainfall and evaporation, ultimately affecting streamflow dynamics. These changes generally occur over decades, but they might be much more rapid in developing countries, where economic growth and growing population may cause abrupt changes in landscape and ecosystem. Detecting, analysing and modelling these changes is an essential step to design mitigation strategies and adaptation plans, balancing economic development and ecosystem protection. In this work we investigate the impact of land cover changes on the water cycle in the Da River basin, Vietnam. More precisely, the objective is to evaluate the interlink between deforestation and precipitation. The case study is particularly interesting because Vietnam is one of the world fastest growing economies and natural resources have been considerably exploited to support after-war development. Vietnam has the second highest rate of deforestation of primary forests in the world, second to only Nigeria (FAO 2005), with associated problems like abrupt change in run-off, erosion, sediment transport and flash floods. We performed land cover evaluation by combining literature information and Remote Sensing techniques, using Landsat images. We then analysed time series of precipitation observed on the period 1960-2011 in several stations located in the catchment area. We used multiple trend detection techniques, both state-of-the-art (e.g., Linear regression and Mann-Kendall) and novel trend detection techniques (Moving Average on Shifting Horizon), to investigate trends in seasonal pattern of precipitation. Results suggest that deforestation may induce a negative trend in the precipitation volume. The effect is mainly recognizable at the beginning and at the end of the monsoon season, when the local mechanisms of precipitation formation prevail over the large scale

  16. Northeast Guanabara Bay and coastal plain Holocene sedimentary evolution (Brazil: A contribution

    Directory of Open Access Journals (Sweden)

    Rodrigo Coutinho Abuchacra

    2017-02-01

    Full Text Available Sedimentological and radiocarbon investigations are part of an ongoing research on the Bay-head delta of northeast Guanabara Bay, Rio de Janeiro State. Sediment accumulation indicates that the Holocene infill of the bay-head delta started around 8.2 kyr BP and was not in pace with the eustatic sea-level rise. Sediment accumulation was faster during the transgressive phase (0.56 cm.yr-1. However, during the regressive phase, progradation driven by base-level fall was predominant over vertical sediment accumulation (0.02 cm.yr-1. Based on coring, three sedimentary units were defined: fluvial sands (U1, estuarine deposits (U2 and fluvial mud (U3.

  17. The use of 131I-radioiodine in diagnostic and treatment: estimated risk in Guanabara

    International Nuclear Information System (INIS)

    Calegaro, J.U.M.

    1974-01-01

    The 131 -radioiodine use in Guanabara area, during 1972-1973, is analysed. References are made to the radiation levels delivered to thyroid, bone marrow and gonads in a population of 27000 people examined by tracer techniques, 190 submitted to hyperthyroidism treatment and 50 treated for thyroid cancer. The pertinent literature gives some data concerning radiation induced cancer (leukaemia and thyroid cancer). By this, it was possible to estimate the probability of tumour occurrence in that population, assuming a linear relationship between dose and effect. The conclusions are the followings: 1 - there are many duties in this field at the present; 2 - the leukaemia incidence related to the 131-radioiodine use is negligible, either in diagnostic or therapeutic modalities; 3 - the possibility of thyroid tumors induced by radiation is real, specially in hyperthyroidism treatment; 4 - the use of tracer techniques that cause lower irradiation to the pacient is advisable, because it isn't possible to exclude thyroid carcinogenesis at this level [pt

  18. Intra-metropolitan inequalities in Rio de Janeiro and the Guanabara Bay cleaning programme

    DEFF Research Database (Denmark)

    Ribeiro, Gustavo; Silva, Victor

    2005-01-01

    This paper investigates the impacts of the Guanabara Bay Cleaning Programme (GBCP) on the Rio de Janeiro urban development process. Based on the magnitude of the budget of the programme (HOW MUCH?) and its relevance to the improvement of the life quality of urban dwellers, the main discussion...... of this paper focuses on the role of GBCP in the context of the Rio de Janeiro urban trends and intra-metropolitan inequality dynamics. In studying the impact of the GBCP, we present: (a) a description of the GBCP intervention process and its goals, (b) a spatial analysis of the Rio de Janeiro Metropolitan Area...... the role of the GBCP implementation in the spatial distribution of these patterns throughout these 10 years. The conclusion builds on an analysis of the GBCP role in the current urban development process of the Rio de Janeiro Metropolitan Area, identifying its influences on the dynamics of intra...

  19. Fishes of the Taquari-Antas river basin (Patos Lagoon basin, southern Brazil Peixes da bacia do rio Taquari-Antas (sistema da Laguna dos Patos, sul do Brasil

    Directory of Open Access Journals (Sweden)

    FG. Becker

    2013-02-01

    Full Text Available The aquatic habitats of the Taquari-Antas river basin (in the Patos Lagoon basin, southern Brazil are under marked environmental transformation because of river damming for hydropower production. In order to provide an information baseline on the fish fauna of the Taquari-Antas basin, we provide a comprehensive survey of fish species based on primary and secondary data. We found 5,299 valid records of fish species in the basin, representing 119 species and 519 sampling sites. There are 13 non-native species, six of which are native to other Neotropical river basins. About 24% of the total native species are still lacking a taxonomic description at the species level. Three native long-distance migratory species were recorded (Leporinus obtusidens, Prochilodus lineatus, Salminus brasiliensis, as well as two potential mid-distance migrators (Parapimelodus nigribarbis and Pimelodus pintado. Although there is only one officially endangered species in the basin (S. brasiliensis, restricted range species (21.7% of total species should be considered in conservation efforts.Os ambientes aquáticos da Bacia do rio Taquari-Antas (Bacia da Laguna dos Patos, sul do Brasil vêm sofrendo considerável transformação, principalmente em razão da implantação de barragens para geração de energia elétrica. Com o objetivo de estabelecer um diagnóstico amplo da ictiofauna da Bacia do Taquari-Antas, realizou-se um inventário das espécies dessa bacia a partir de dados primários e secundários. Foram obtidos 5.299 registros válidos de espécies de peixe na bacia, representando 119 espécies e 519 localidades amostradas. Ocorrem, na bacia, 13 espécies não nativas, seis das quais são oriundas de outras bacias neotropicais. Cerca de 24% de todas as espécies carecem de descrição taxonômica no nível específico. Foram registradas três espécies nativas migradoras de longa distância (Leporinus obtusidens, Prochilodus lineatus e Salminus brasiliensis e

  20. Tectonic-stratigraphic evolution of Cumuruxatiba Basin - Brazil; Evolucao tectono-estratigrafica da Bacia de Cumuruxatiba

    Energy Technology Data Exchange (ETDEWEB)

    Lobato, Gustavo; Fernandes, Flavio L.; Silva, Eric Zagotto; Ferreira Neto, Walter Dias [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Lab. de Modelagem Multidisciplinar de Bacias Sedimentares; Ribeiro, Juliana [Agencia Nacional do Petroleo, Gas Natural e Biocombustiveis (ANP), Brasilia, DF (Brazil)

    2008-07-01

    In recent years, the exploratory interest on Cumuruxatiba Basin has been inconstant, with modest discoveries of oil. Aiming to deepen the geological knowledge of the basin and in order to attract the interest of oil companies, the ANP (National Agency of Petroleum, Natural Gas and Biofuels) signed contract with COPPE/UFRJ for carrying out an analysis basin project. The project was developed by the Basin Analysis Multidisciplinary Modeling Laboratory (Lab2M/UFRJ) in the period 2006/2007, and was with the main objective outline the main structural and seismo-stratigraphic features of the basin, and in an integrated and multidisciplinary way, build a model of its sedimentation and tectono-stratigraphic evolution. This paper presents the results of the regional seismic mapping, aided by well and potential methods data. The stratigraphic succession the basin has been divided into genetic units (UN-B, UN-C e UN-D) corresponding to second order depositional sequences, they are: UN-B, corresponding by a rift and sag-rift siliciclastic deposits, plus the Aptian evaporitic deposits; UN-C, characterized by carbonatic deposits, and shelf related sediments; and UN-D, corresponding by a final transgressive (siliciclastic) - regressive (mix) cycle, between Cenomanian and actual days. (author)

  1. The challenge to explore the Brazilian interior basins; O desafio da exploracao das bacias interiores brasileiras

    Energy Technology Data Exchange (ETDEWEB)

    Bacoccoli, Giuseppe [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia; Guimaraes, Paulo Buarque [Organizacao da Industria do Petroleo (ONIP), Rio de Janeiro, RJ (Brazil)

    2004-07-01

    Due to the development of the fields, already discovered in the deep waters of the Southeastern Atlantic Margin, the Brazilian domestic production will shortly be equivalent to the consumption. Despite reaching this goal, the exploration of large interior basins is still considered a challenge. Surprisingly, after the discoveries in the Solimoes Basin, as well after the opening of the Brazilian Petroleum Sector in 1997, the present level of the exploration activities in these basins is far below the previous historical averages. The available data are still now considered too scarce, to perform a proper evaluation. Apparently, a vicious circle has been established: due to the a priori low attractiveness new data are not acquired and because the lack of new data the attractiveness cannot be modified nor improved. The Parnaiba Basin is usually mentioned as an example of this poor amount of data. A modest coverage of ancient 2D seismic lines, and obsolete aero magnetic survey and thirty one exploratory wells, mostly located without geophysical support, represents all the available data in this vast basin with an area over 600,000 sq km. Recent regional geologic interpretations in such interior basins, as in Solimoes, Parana and also Parnaiba, are pointing out the presence of remarkable intraplate tectonic events, successively reactivated along the geologic time. It is now intended that these events can play an important role in the control of the petroleum system and in focalizing the new exploration activities. However, efforts should be applied in the revision of some regulatory rules, in Brazil, in order to better stimulate the onshore exploration and particularly the exploration of the interior basins. As recommended by the new Brazilian Petroleum Law, part of the government takes shall be effectively applied to acquire more geologic and geophysical data in the onshore areas (author)

  2. Hydrogeological Study of Mangrove Areas Around Guanabara Bay, Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Gerson Cardoso da Silva Júnior;

    2003-01-01

    Full Text Available The study area covers part of the mangrove belt located around Guanabara Bay, Rio de Janeiro, Brazil. Representing a continental-marine transition, the mangrove ecosystem is very susceptible to environmental variations and impacts. The vegetation cover plays an important role in prevention of erosion and contamination processes in those areas. An ongoing extensive research effort in the Petrochemical Complex of Duque de Caxias, Rio de Janeiro State, Brazil, focuses on the man-induced changes in the physical environment (soils, groundwater flow system, type and volumes of contaminants, geochemical aspects and the consequences on the neighboring mangrove ecosystem. This article describes the importance of hydrogeological studies in mangrove areas as part of an appropriate environmental assessment, taking as an example an industrial dumping area located in that Petrochemical Complex. Field work included extensive drilling and sampling to obtain basic geological and hydrogeological parameters and data in the pilot area, such as hydraulic conductivity and piezometric heads; emphasizing the tracking of possible contamination by industrial effluents and the marine influence; validation of the conceptual model with mathematical models (numerical and analytical models was carried out. Results show the great importance of well conducted and detailed hydrogeological studies to properly address environmental problems caused by industrial plants in mangrove areas.

  3. Late Holocene evolution and increasing pollution in Guanabara Bay, Rio de Janeiro, SE Brazil

    International Nuclear Information System (INIS)

    Vilela, Claudia Gutterres; Figueira, Brígida Orioli; Macedo, Mariana Cardoso; Baptista Neto, José Antonio

    2014-01-01

    Highlights: • Foraminifera along the cores confirmed increasing of pollution toward the present. • Foraminifera correlated studies inferred loss of old mangrove systems. • Radiocarbon dates integrated to sediment rates marked the European settlement. • Ammonia tepida is dominant at upper intervals, as a human pollution bioindicator. • Buliminella elegantissima was dominant at core deeper samples before the discovery by Europeans. - Abstract: To detect changes during the Late Holocene and historical periods in Guanabara Bay, the paleoecological and ecological parameters from nine cores were analysed using foraminiferal assemblages and bioindicators. Using radiocarbon dates and sedimentation rates in the cores, it was possible to detect the first Europeans’ arrival in the 16th century. Foraminiferal bioindicators of organic matter and human pollution were correlated with radiocarbon dates from the bottom and middle of the cores in each region and revealed an increase in pollution along the cores. The foraminiferal results were compared with total organic carbon (TOC) values before, during and after European settlement and showed a historical increase in organic matter. Pristine mangrove ecosystems are characterised by agglutinated species such as Ammotium salsum, and the presence of this organism also confirmed the extent of historical mangrove forests. Ammonia tepida, Buliminella elegantissima and Elphidium excavatum were the dominant species, but they presented distinct patterns over time. B. elegantissima was dominant before the European influence in older sediments with high organic matter content that were found at deeper intervals. A. tepida is dominant in younger sediments at upper intervals, as a bioindicator of human pollution

  4. Similarity between the dead and living foraminiferal assemblages of the NE sector of Guanabara Bay (Brazil

    Directory of Open Access Journals (Sweden)

    Maria Virgínia Alves Martins

    2016-12-01

    Full Text Available Guanabara Bay (GB, located at the coast of Rio de Janeiro State (Brazil, is an ecosystem rich in biodiversity both in terms of mega, macro and microfauna. However, the factors that control their distribution are still poorly understood. This work intends to identify the possible factors affecting the distribution of benthic foraminifera in the bay by comparing living and dead assemblages in selected sediment fractions. Substantial differences in terms of density, diversity and equitability of the species in the living and dead assemblages and in different sediment fractions (63-150 μm, 150-250 μm, 250-500 μm are identified. Lower similarity (<70% between the living and dead assemblages are associated with areas impacted by organic matter and may be mainly ascribed to either loss of tests due to dissolution, currents remobilization and abrasion, or inclusion of allochthonous species transported by currents. This work suggests that the use of the living plus dead assemblages or dead assemblages can reduce the accuracy of the results if the work intends to evaluate the environmental conditions.

  5. Neopaleozoic biostratigraphy of the Parana Basin; Bioestratigrafia do neopaleozoico da Bacia do Parana

    Energy Technology Data Exchange (ETDEWEB)

    Daemon, Roberto Ferreira; Quadros, Luiz Padilha de

    2006-11-15

    Surface samples and cores from 31 exploratory wells were chosen as being the most representative among those drilled by PETROBRAS across the Parana Sedimentary Basin, from Mato Grosso and Goias to Rio Grande do Sul. Their analysis yielded a large amount or Saccites, Monoletes and Monocolpates spores, in addition to representatives of Tasmanales. From the great number of identified forms, 40 species - characterized by their wide geographical distribution allied to a short vertical range - were selected and used as a basis for the biostratigraphical subdivision of the Gondwana section of this sedimentary basin. This biostratigraphic column was divided into six main intervals, designated by the letters G to L, some with further subdivisions. The comparison of the species with those described from other regions provided sufficient geochronological data for the dating of the different intervals. It also demonstrated that the Upper Paleozoic sedimentary sequence in the Parana Basin ranges from the Upper Pennsylvanian (Stephanian C) to the Upper Permian (Kazanian). To complete the paleogeologic data the previously established zonation of the Devonian section was also included. The correlation of the biostratigraphic intervals across the basin and their relationship with the rock-stratigraphic units are demonstrated in several sections. The interpretation of these sections and of the biostratigraphic interval isopachous maps provided important information on the paleogeographic development of the basin. Among the more significant results is evidence of the start of the Permo-Carboniferous sedimentation in the northern regional depression, of a subsequent southward tilting of the basin accompanied by the progressive advance of the deposits toward the Rio Grande do Sul shield and of a Lower Permian lacuna in eastern Parana indicating the beginning of the epeirogenic process which culminated with the rise of the Ponta Grossa arch. The paper also presents some paleoecological

  6. TM/Landsat images for detection of oil spills in the Guanabara bay, RJ, Brazil; Imagens TM/Landsat na deteccao de mancha de oleo na Baia de Guanabara, RJ, Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Kampel, Milton; Amaral, Silvana [Instituto Nacional de Pesquisas Espaciais (INPE), Sao Jose dos Campos, SP (Brazil)]. E-mails: milton@ltid.inpe.br; silvana@dpi.inpe.br

    2001-07-01

    This paper proposes a methodology to identify and to estimate the spatial area of an oil film spilled over the Guanabara Bay waters, in January 2000, using digital image processing of T M/Landsat images. Ana analysis of principal components over the T M original bands pointed out the oil film. Techniques of image segmentation in conjunction with field observation defined and estimated an area of 133,4 k m2 for the oil spill. The main limitation was the cloud coverage observed in the image. We suggest the additional use of other satellites, including microwave sensors, for environmental monitoring of similar disasters. (author)

  7. Sodalite Cancrinite Nepheline Syenite of Mendanha Massif, State of Rio de Janeiro, Brazil, Called Commercially Blue Guanabara Granite, and its Origin from Deuteric Metasomatism

    Directory of Open Access Journals (Sweden)

    Akihisa Motoki

    2015-01-01

    Full Text Available Este artigo apresenta observações de campo, descrições petrográficas e considerações genéticas do sodalita cancrinita nefelina sienito, chamado comercialmente de Granito Cinza Azul Guanabara, que se encontra na zona de contato sudoeste da intrusão alcalina félsica de Mendanha, RJ. Esta rocha ornamental ocorre ao longo do eixo central de um dique sienítico com 15 m de largura. A cor macroscópica em rocha total é caracterizada por saturação baixa (S=5~7 e clareza média (B~62. A cor de minerais opacos tem clareza relativamente alta (B~28. O feldspato alcalino é comumente alterado em muscovita. Os feldspatóides são presentes nos espaços intersticiais do arcabouço de feldspato alcalino. O anfibólio e biotita são alterados em minerais opacos e vermiculita, apresentando pseudomorfo. Os minerais acessórios são magnetita primária e titanita. Existe uma significativa quantidade de carbonatos com quantidade modal de 6,8%, constituindo agregados de forma irregular ou preenchendo espaços. A cor macroscópica dos agregados de feldspatóides varia de azul profundo para azul claro de acordo com o teor relativo de sodalita. A sodalita e cancrinita são originadas de nefelina e foram formadas através de metassomatismo deutérico do fluído rico em Cl

  8. ESTIMATIVA DA EROSÃO ATUAL DA BACIA DO RIO PARACATU (MG / GO / DF ESTIMATE OF THE CURRENT EROSION OF THE PARACATU RIVER BASIN, BRAZIL

    Directory of Open Access Journals (Sweden)

    Valtercides Cavalcante da Silva

    2007-09-01

    Full Text Available

    A equação universal de perda de solo (EUPS é amplamente utilizada na predição de perda de solo e na definição de práticas adequadas de manejo em vertentes individuais. Contudo, alguns fatores da equação são de difícil obtenção em bacias hidrográficas, como é o caso do fator de comprimento de vertente (fator L. Neste sentido, aplicou-se a EUPS para análise de uma bacia hidrográfica de médio porte, a bacia do Rio Paracatu. Em termos específicos, este trabalho visou o emprego da metodologia de cálculo automático do fator L, desenvolvido por Desmet & Govers (1996, com o suporte de um sistema de informações geográficas (SIG. Essa metodologia foi empregada na estimativa da erosão atual. Mapas temáticos existentes, juntamente com informações sobre solos, uso da terra, relevo e clima, foram utilizados para a obtenção de coberturas, que cruzadas no SIG, produziram mapas de erosão atual. Na estimativa da perda de solo, verificou-se que 67,2% da área total da bacia do Rio Paracatu ainda se encontram dentro da tolerância de perda de solo (inferior a 10 t.ha-1/ano. A adaptação do cálculo do fator de comprimento de vertente (L, seguindo a metodologia de Desmet & Govers (1996, que considera o fluxo acumulado, teve resultado satisfatório. A metodologia empregada mostrouse válida, uma vez que os aportes de sedimentos anuais calculados em seções onde havia dados sedimentométricos, ficaram próximos dos valores observados.

    PALAVRAS-CHAVE: Erosão; EUPS; fator L; SIG.

    The universal soil loss equation (USLE is widely used all over the world in the prediction of soil loss and in the definition of best management practices of single slopes. However, despite its potential of application, a few factors of the equation are difficult to obtain, such

  9. Lixo flutuante na Baía de Guanabara: passado, presente e perspectivas para o futuro

    Directory of Open Access Journals (Sweden)

    Dandara Bernardino

    2016-08-01

    Full Text Available The pollution of marine and coastal environments by floating litter is a serious problem around the world, usually provoked by an inefficient waste management in the coastal areas, that may generate severe impacts in the wild life, for example death by waste ingestion. The present study has the goal to analyse, under a historical retrospective and future perspective, the floating litter problem at Guanabara’s Bay. Therefore, the methodology for the historical analysis was done by a literature study. In turn, the present analysis was based on field data related to the floating litter on previous studies at the beaches of Icaraí, Charitas and São Francisco located at the city of Niterói, Flamengo beach on Rio de Janeiro and at the Mangrove of Barão de Mauá City’s Natural Park in Magé, respectively. Where samples were collected and current information about the actions related to the floating litter studied. The future perspectives were based on sanitation plans of municipalities around Guanaraba Bay that settle future goals to the pollution of it. In doing so, the results show that in spite of the public agencies efforts to depollute the Guanabara Bay, all the wastes produced by the surrounding municipalities keep reaching the estuary. It is worth mentioning that is too early to determine if these programs will be, in fact, effective and there are many different actions that need to be done including not only social awareness, but also the participation of all the social actors involved.

  10. Estimating the chlorophyll content in the waters of Guanabara Bay from the LANDSAT multispectral scanning digital data

    Science.gov (United States)

    Dejesusparada, N. (Principal Investigator); Bentancurt, J. J. V.; Herz, B. R.; Molion, L. B.

    1980-01-01

    Detection of water quality in Guanabara Bay using multispectral scanning digital data taken from LANDSAT satellites was examined. To test these processes, an empirical (statistical) approach was choosen to observe the degree of relationship between LANDSAT data and the in situ data taken simultaneously. The linear and nonlinear regression analyses were taken from among those developed by INPE in 1978. Results indicate that the major regression was in the number six MSS band, atmospheric effects, which indicated a correction coefficient of 0.99 and an average error of 6.59 micrograms liter. This error was similar to that obtained in the laboratory. The chlorophyll content was between 0 and 100 micrograms/liter, as taken from the MSS of LANDSAT.

  11. Towards the Olympic Games: Guanabara Bay Forecasting System and its Application on the Floating Debris Cleaning Actions.

    Science.gov (United States)

    Pimentel, F. P.; Marques Da Cruz, L.; Cabral, M. M.; Miranda, T. C.; Garção, H. F.; Oliveira, A. L. S. C.; Carvalho, G. V.; Soares, F.; São Tiago, P. M.; Barmak, R. B.; Rinaldi, F.; dos Santos, F. A.; Da Rocha Fragoso, M.; Pellegrini, J. C.

    2016-02-01

    Marine debris is a widespread pollution issue that affects almost all water bodies and is remarkably relevant in estuaries and bays. Rio de Janeiro city will host the 2016 Olympic Games and Guanabara Bay will be the venue for the sailing competitions. Historically serving as deposit for all types of waste, this water body suffers with major environmental problems, one of them being the massive presence of floating garbage. Therefore, it is of great importance to count on effective contingency actions to address this issue. In this sense, an operational ocean forecasting system was designed and it is presently being used by the Rio de Janeiro State Government to manage and control the cleaning actions on the bay. The forecasting system makes use of high resolution hydrodynamic and atmospheric models and a lagragian particle transport model, in order to provide probabilistic forecasts maps of the areas where the debris are most probably accumulating. All the results are displayed on an interactive GIS web platform along with the tracks of the boats that make the garbage collection, so the decision makers can easily command the actions, enhancing its efficiency. The integration of in situ data and advanced techniques such as Lyapunov exponent analysis are also being developed in the system, so to increase its forecast reliability. Additionally, the system also gathers and compiles on its database all the information on the debris collection, including quantity, type, locations, accumulation areas and their correlation with the environmental factors that drive the runoff and surface drift. Combining probabilistic, deterministic and statistical approaches, the forecasting system of Guanabara Bay has been proving to be a powerful tool for the environmental management and will be of great importance on helping securing the safety and fairness of the Olympic sailing competitions. The system design, its components and main results are presented in this paper.

  12. Águas com predominância de Eutreptia lanowi steuer e Chlamydomonas reinhardi dangeard no plancton, na enseada de Inhauma, Baía de Guanabara

    Directory of Open Access Journals (Sweden)

    Lejeune P. H. de Oliveira

    1962-03-01

    Full Text Available In brackish waters of a creek of Guanabara Bay, the author points by the first time the presence of Chlamydomonas reinhardi, Eutreptia lanowi, Oscillatoria putrida, O. limosa, O. chlorina that were unknown in our waters; such biologic indicators proved themselves pollutional conditions, so bad a stark-mesosaprobic regime. Other news are plankton analysis by the Standar methods, of two most expressive samples of water masses;also the mobility of the plankters are measured in micra by second.

  13. Tectonic-stratigraphic evolution of mini-basins and salt provinces of Espirito Santo Basin-Brazil; Analise da evolucao tectono sedimentar de mini-bacias e provincias de sal da Bacia do Espirito Santo

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira Neto, Walter Dias; Fernandes, Flavio Luis [Petroleum Geoscience Technology Ltda. (PGT), Rio de Janeiro, RJ (Brazil); Mohriak, Webster [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil); Universidade do Estado do Rio de Janeiro (UERJ), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The Espirito Santo Basin integrates the group of basins along the eastern Brazilian continental margin. It is located between 18 deg and 21 deg S, encompassing an area of approximately 220,000 km{sup 2}, onshore and offshore the Espirito Santo State. Its geological limit with the Campos Basin to the south is defined by a Precambrian basement high (Vitoria Arch), and its northern limit with the Mucuri Basin is defined by a geopolitical limit. The study of salt tectonics processes in the Espirito Santo Basin allowed the deformational analysis and interpretation of the chronological evolution of the mini-basins developed between salt diapirs. We observe an intrinsic relationship between halokinesis and creation of subsidence troughs that may be important for trapping hydrocarbon reservoirs, and consequently form oil and gas accumulations in this portion of the basin. This geodynamics evolution of these structures is marked by a strong linkage between salt movement and coeval sedimentation in the interdomal basins, forming structures and stratigraphic traps that may constitute important aspects for the petroleum geology. (author)

  14. Auto- and heterotrophic nanoplankton and filamentous bacteria of Guanabara Bay (RJ, Brazil: estimates of cell/filament numbers versus carbon content

    Directory of Open Access Journals (Sweden)

    Viviane Severiano Santos

    2007-06-01

    Full Text Available Variations of nanoplankton (2-20 µm and filamentous bacteria (diameter: 0.5-2.0 µm of Guanabara Bay (RJ, Brazil are presented, considering cell density and carbon content of auto- and heterotrophs. Our goal is to contribute to future modeling of local trophic dynamics. Subsurface water samples were taken weekly during the year 2000 at two sites: Urca (close to the entrance, more saline, eutrophic and Ramos (inner area, less saline, hypertrophic. Microscopic analysis was done by epifluorescence and cell density was converted to biomass through cell biovolume. Total nanoplankton was about 10(8 cells.l-1 in most samples (>57%, and total filamentous bacteria densities varied from 10(5 to 10(8 fil.l-1. Autotroph density was one order of magnitude higher at Ramos, both for nanoplankton (Md: 10(8cells.l-1 at Ramos and 10(7cells.l-1 at Urca and for filamentous bacteria (Md: 10(6 fil.l-1 at Ramos and 10(5 fil.l-1 at Urca. The same was observed for autotrophic biomass (Md: 10³µgC.l-1 at Ramos and 10¹µgC.l-1 at Urca for nanoplankton; Md: 28µgC.l-1 at Ramos and 1.4µgC.l-1 at Urca for filamentous bacteria. The relative contribution of autotrophs increased after conversion to biomass. Seasonal variation was conspicuous for filamentous bacteria at both sites and for nanoplankton only at Ramos, with maximum autotrophic abundances during the rainy period (spring-summer.Variações do nanoplâncton (2-20µm e bactérias filamentosas (diâmetro: 0.5-2.0 µm da Baía de Guanabara (RJ, Brasil são apresentadas, considerando densidade celular e biomassa de autótrofos e heterótrofos. A meta deste trabalho é contribuir para uma futura modelagem da dinâmica trófica neste sistema. Amostras subsuperficiais de água foram coletadas semanalmente durante um ano em dois pontos: Urca (próximo à entrada, mais salino, eutrófico e Ramos (no interior, menos salino, hipertrófico. Foi feita análise por microscopia de epifluorescência, com densidade celular

  15. Chemical and microbiological characterization of mangrove sediments after a large oil-spill in Guanabara Bay - RJ - Brazil Caracterização química e microbiológica de sedimentos de manguezal após um grande derramamento de óleo na Baia de Guanabara, RJ, Brasil

    Directory of Open Access Journals (Sweden)

    Maria do Carmo Maciel-Souza

    2006-09-01

    Full Text Available Seventeen months after a 1,3 million L oil spill into Guanabara Bay, analyses of mangrove sediments showed that the three sites closest to the spill remain highly polluted (>10 µg-g-1 polyaromatic hydrocarbons. A fourth site was less polluted, from which most hydrocarbon degrading bacteria were isolated.Dezessete meses após um derramamento de 1,3 milhões de litros de óleo na Baía de Guanabara, análises de sedimento do manguezal mostraram que os três pontos de amostragem mais próximos do local do acidente permanecem altamente poluídos (>10 µg-g-1 hidrocarbonetos poliaromáticos. Do quarto ponto de amostragem, o menos poluído, foi isolada a maioria das bactérias degradadoras de hidrocarbonetos.

  16. Geologia e pedologia da bacia glacial no distrito de Sousas, Campinas, SP Geology and pedology of a glacial basin found in the Sousas area

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    Adolpho José Melfi

    1962-01-01

    Full Text Available O presente trabalho refere-se à geologia e pedología de uma bacia sedimentar glacial, situada no distrito de Sousas, Município de Campinas, em região de rochas pré-cambrianas. Os estudos geológicos constaram da elaboração de mapa geológico, baseado em fotografias aéreas, na escala média de 1:14 000 e mapa topográfico na escala de 1:5000; reconhecimento das rochas e esbôço estrutural da bacia. Quando à pedología, foram feitas caracterizações morfo-pedogenétícas dos solos por meio de perfis e determinações das classes texturais através de análise granulométrica.A glacial basin was found in the Sousas area, Campinas County, surrounded by pre-Cambrian rocks and not connected with the Paraná sedimentary basin which possesses a similar formation. Geological studies were carried out consisting of petrographie identifications, structural sketch of the basin, delimitation of its occurrence, and mapping of its geological limits. The field delimitation was done by means of aerial photographs (average scale 1:14, 000 and topographic maps (scale 1:5, 000. The pedological studies that were performed consisted in taking soil profiles for morphological and genetic characterization of the great soil groups and collection of samples for textural analysis.

  17. Demanda de irrigação da cultura da uva na Bacia do Rio São Francisco Irrigation demand for grape crop in San Francisco River Basin

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    Wallisson da S. Freitas

    2006-09-01

    Full Text Available Visando subsidiar o planejamento de projetos agrícolas para o dimensionamento de projetos de irrigação e a gestão de recursos hídricos, estimou-se e se espacializou a demanda de irrigação da videira (Vitis vinifera L., cv. Itália, na bacia do Rio São Francisco. Utilizaram-se séries históricas de dados de 81 estações climáticas distribuídas na bacia. Para cada estação calculou-se os valores, máximos diários e o total anual, da evapotranspiração de referência (ETo, da evapotranspiração da cultura (ETc, da demanda suplementar da cultura e da demanda suplementar de irrigação (este com eficiência de 70%. Com base nos resultados obtidos, concluiu-se que: (a a ETc máxima diária variou, em grande parte da bacia, de 4,5 a 5,7 mm d-1, tendo média anual de 943 mm; (b em média, a demanda anual suplementar da cultura foi 839,5 mm, equivalente a 103,5 mm inferior à ETc; (c o fato do sistema funcionar com 70% de eficiência, em vez de 90%, implica em acréscimo estimado de 18.808.755 m³ de água por ano, somente nas microrregiões de Juazeiro, BA e Petrolina, PE.The irrigation water demand of the grapevine (Vitis vinifera L. cv. Italy was estimated and spatialized in San Francisco River Basin, in order to subsidize the agricultural project planning and water resource management. Historical data series relative to 81 climatic stations distributed throughout the basin were used. The maximum daily values and the annual total values of the reference evapotranspiration (ETo, crop evapotranspiration (ETc, supplementary demand of the crop and the supplementary irrigation demand (70% efficiency were calculated for each station. According to the results, the following conclusions were drawn: (a in a large area of the basin, the maximum daily ETc varied from 4.5 to 5.7 mm d-1, with an annual mean of 943 mm; (b the supplementary annual demand of the crop averaged 839.5 mm, corresponding to 103.5 mm less than ETc; and (c the irrigation

  18. Cenozoic pulsed compression of Da'an-Dedu Fault Zone in Songliao Basin (NE China) and its implications for earthquake potential: Evidence from seismic data

    Science.gov (United States)

    Yu, Zhongyuan; Zhang, Peizhen; Min, Wei; Wei, Qinghai; Zhao, Bin

    2018-01-01

    The Da'an-Dedu Fault Zone (DDFZ) is a major tectonic feature cutting through the Songliao Basin from south to north in NE China. Pulsed compression deformation of DDFZ during the Cenozoic implies a complex geodynamic process, and the latest stage of which occurred in the Quaternary directly influences the present seismicity of the interior basin. Although most of the evidence for Quaternary deformation about the Songliao Basin in the past decades was concentrated in marginal faults, all five earthquake swarms with magnitudes over 5.0 along the buried DDFZ with no surface expression during the past 30 years suggest it is a main seismogenic structure with seismic potential, which should deserve more attention of geologists. However, limited by the coverage of the Quaternary sedimentary and absence of strong historic and instrumental earthquakes records (M > 7), the geometric pattern, Quaternary activity and seismic potential of the DDFZ remain poorly understood. Thus, unlike previous geophysical studies focused on crust/mantle velocity structure across the fault and the aim of exploring possible mineral resources in the basin, in this study we have integrated a variety of the latest seismic data and drilling holes from petroleum explorations and shallow-depth seismic reflection profiles, to recognize the Cenozoic pulsed compression deformation of the DDFZ, and to discuss its implication for earthquake potential. The results show that at least four stages of compression deformation have occurred along the DDFZ in the Cenozoic: 65 Ma, 23 Ma, 5.3 Ma, and 1.8 Ma, respectively, although the geodynamic process behind which still in dispute. The results also imply that the tectonic style of the DDFZ fits well with the occurrence of modern seismic swarms. Moderate earthquake potential (M ≤ 7.0) is suggested along the DDFZ.

  19. Paleoenvironment interpretation of a 1760 years B.P. old sediment in a mangrove area of the Bay of Guanabara, using pollen analysis

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    Barth Ortrud M.

    2006-01-01

    Full Text Available A sediment sample was obtained at 122 cm from the top of a drilling core in the Guapimirim mangrove, Bay of Guanabara, and analyzed using pollen analysis. This muddy core reached a sandy ground at 133 cm. 14C datation got the age of 1760 ? 50 years B.P. The most frequent pollen grains were mangrove species of Rhizophora mangle, Laguncularia racemosa and Avicennia schaueriana. "Restinga" and tropical rain forest vegetation was recognized behind the mangrove. After the last sea transgression at 2500 years B.P., the water level lowered to its actual size, allowing the installation of this mangrove.

  20. Pollen record and paleoenvironment of a 4210 years B.P.old sediment in the Bay of Guanabara, Rio de Janeiro, Brazil

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    Barth Ortrud M.

    2004-01-01

    Full Text Available Pollen analysis of a sediment sample obtained at 222 cm from the top of a drilling core collected in the Bay of Guanabara, Rio de Janeiro, was used as a tool to obtain more knowledge about pre-historical human living and environment. 14C datation revealed the age of 4210 years B.P. Most frequent pollen grains came from plants like Alchornea (Euphorbiaceae, Celtis (Ulmaceae, Lecythidaceae, Meliaceae, Ochnaceae and spores from forest Pteridophyta. Palynology and environmental studies revealed that agricultural activities could not be detected. The dense tropical rain forest was the dominant vegetation occurring in this region.

  1. Pollen record and paleoenvironment of a 4210 years B.P.old sediment in the Bay of Guanabara, Rio de Janeiro, Brazil.

    Science.gov (United States)

    Barth, Ortrud M; Barreto, Cíntia F; Coelho, Luciane G; Luz, Cynthia F P

    2004-09-01

    Pollen analysis of a sediment sample obtained at 222 cm from the top of a drilling core collected in the Bay of Guanabara, Rio de Janeiro, was used as a tool to obtain more knowledge about pre-historical human living and environment. 14C datation revealed the age of 4210 years B.P. Most frequent pollen grains came from plants like Alchornea (Euphorbiaceae), Celtis (Ulmaceae), Lecythidaceae, Meliaceae, Ochnaceae and spores from forest Pteridophyta. Palynology and environmental studies revealed that agricultural activities could not be detected. The dense tropical rain forest was the dominant vegetation occurring in this region.

  2. The paleozoic of Amazonas basin south edge: Tapajos river, Para state; O paleozoico da borda sul da bacia do Amazonas: rio Tapajos, estado do Para

    Energy Technology Data Exchange (ETDEWEB)

    Matsuda, Nilo Siguehiko [Petrobras E e P, Rio de Janeiro, RJ (Brazil). Exploracao. Estratigrafia e Sedimentologia Geologia Aplicada a Exploracao], E-mail: nilo@petrobras.com.br; Winter, Wilson Rubem [Petrobras, Campoas dos Goytacases, RJ (Brazil). Exploracao. Sedimentologia e Estratigrafia], E-mail: winter@petrobras.com.br; Wanderley Filho, Joaquim Ribeiro; Cacela, Alessandra Suzely Moda [Petrobras, Manaus, AM (Brazil). Exploracao. Unidade de Operacoes de Exploracao e Producao da Amazonia], Emails: jwand@petrobras.com.br, alessandra.suzely@petrobras.com.br

    2009-11-15

    The intracratonic Amazonas Basin covers an area close to 500.000km{sup 2} shared between the Amazonas and Para states. The phanerozoic stratigraphic framework is up to 6.000m thick and may be subdivided into two, first order depositional sequences: the Paleozoic sequence, intruded by diabase dikes and sills and the Mesozoic-Cenozoic sequence. Analyzing the stratigraphic framework, the great tectonic influence on the basin development can be appreciated. The mainly NW-SE structural directions of the basement, which mark the boundaries of the geochronological provinces of the Amazonas, are clearly identified along the Tapajos River. The Paleozoic sequence outcrops on the southern border of the Amazonas Basin embraces potential source rocks, reservoirs and seal rocks. They can be subdivided in three, second order sequences, limited by regional unconformities, as: the Ordovician/Devonian, which corresponds to the Pitinga lithostratigraphic formation; the Devonian-Tournaisian, which corresponds to the Maecuru, Erere, Barreirinha and Curiri formations and, the Pensylvanian-Permian that are represented by the Monte Alegre and Itaituba formations. This field trip guide presents these classic lithostratigraphic outcrop units, together with a brief sedimentological description and an analysis of their positioning related to sequence stratigraphical concepts. (author)

  3. Tectonic-stratigraphic evolution of Espirito Santo Basin - Brazil; Evolucao tectono-estratigrafica da Bacia do Espirito Santo

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Eric Zagotto; Fernandes, Flavio L.; Lobato, Gustavo; Ferreira Neto, Walter Dias [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Lab. de Modelagem de Bacias (LAB2M); Petersohn, Eliane [Agencia Nacional do Petroleo, Gas Natural e Biocombustiveis (ANP), Brasilia, DF (Brazil)

    2008-07-01

    This paper documents the analysis of seismic data of the Espirito Santo basin obtained during the project realized through partnership between COPPE/UFRJ/Lab2M with the Agencia Nacional do Petroleo, Gas Natural e Biocombustiveis (ANP) during 2006 and 2007. The major objective of the seismic data interpretation in the project was to define the main structural and stratigraphic features in order to build a sedimentation model and a tectonic-stratigraphic evolution model of the Espirito Santo basin. Thus, the sedimentary package has been divided into eight genetic units (UN), grouped into five third order stratigraphic sequences, namely: UN-B, represented by siliciclastics rocks of the rift stage and evaporitic sag-rift stage, deposited during the Aptian; UN-C, which represents the carbonatic rocks deposited in a marine environment, and siliciclastics rocks located in the proximal portions during the Albian; and UN-D, represented by sediments, composed mainly by pelites, deposited in between the Cenomanian and Recent, and includes the Eocene volcanic event, which one changed the sedimentation pattern of the basin. (author)

  4. Raft tectonics in northern Campos Basin; Tectonica de jangada (raft tectonics) na area norte da Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Castro, Marilia R. de [Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacases, RJ (Brazil)]|[PETROBRAS, Macae, RJ (Brazil). Unidade de Negocio da Bacia de Campos; Fugita, Adhemar M. [Universidade do Estado, Rio de Janeiro, RJ (Brazil). Programa de Recursos Humanos da ANP

    2004-07-01

    In the northern area of Campos Basin salt gliding/spreading processes promoted the break-up and transport of Cretaceous and Tertiary rocks overlying the evaporites. This process is known as raft tectonics, and it represents the most extreme form of thin-skinned extension above the salt decollement surface. Three distinct geotectonic domains were recognized that formed in response to the raft tectonics. The first one, confined to the shallower shelf portion of the basin, is characterized by minor extension (pre-raft domain), probably because of small salt thickness and low gradient. In the second domain (or disorganized rafts domain), located in distal platformal and slope areas, seismic sections show the occurrence of blocks or rafts with angular shapes, sometimes imbricated and frequently discontinuous. In the third domain, or domain of organized rafts, located in bacinal region, seismic sections show a more continuous raft pattern, often folded because of salt compression in the distal portions of the basin. The main purposes of this work is to characterize these three tectonic domains distinguished by raft tectonics, as well as their importance in hydrocarbon accumulations in calcarenites. (author)

  5. Bentonites of the Irati Formation in the southern sector of the Parana Basin, Brazil; Bentonitas da Formacao Irati no setor sul da Bacia do Parana

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Aurelio Fagundes; Dani, Norberto; Remus, Marcus Vinicius Dornelles; Sommer, Margot Guerra, E-mail: norberto.dani@ufrgs.br, E-mail: marcus.remus@ufrgs.br, E-mail: margot.sommer@ufrgs.br [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil); Horn, Bruno Ludovico Dihl, E-mail: brunoldhorn@gmail.com [Servico Geologico do Brasil (CPRM), Recife, PE (Brazil). Superintendencia Regional

    2017-01-15

    This paper aims to identify and to present mineralogical and chemical arguments that demonstrate the existence of bentonite levels in the Irati Formation, found in outcrops to the west Acegua in southern Rio Grande do Sul (Brazil). These levels are thin, on average 4 cm thick, large in area, and are composed of grayish-white to greenish massive clay stones that contrast, in the field, with the shales of the Irati Formation. The bentonite levels of the Irati Formation are predominantly composed of Ca-montmorillonite, which constitutes the fine matrix of the rock; and scattered primary or magmatic crystals not larger than very fine sand. Among the main primary minerals representative of volcanic setting, it is possible to identify β-quartz paramorphs, sanidine, biotite, zircon, apatite and ilmenite, in addition to quartz and feldspar shards (splinters). More rarely, fragments of meso and macrocharcoals are found within the bentonite layers, which contrast with the maturity and type of non-vegetal organic matter of the Irati shale. Therefore, the nature of the precursor volcanism is inferred on the basis of rock geochemistry and crystal chemistry of the neoformed montmorillonite in the bentonite levels. Both methodologies indicate that during this period the volcanic ashes that reached the Parana Basin were generated by volcanism of intermediate composition, which is in accordance with what is known about the Lower Choiyoi Volcanic Province manifestations, which were synchronous with the sedimentation of the Irati Formation in the Parana Basin. (author)

  6. Exploration potential of Paraiba and Natal platform basins, NE Brazil; Potencial exploratorio das bacias da Paraiba e da plataforma de Natal, NE do Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Barbosa, Jose A. [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil); Lima Filho, Mario; Neumann, Virginio H. [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Dept. de Geologia; Maranhao Neto, Jose Carneiro; Araujo, Joao A.A. [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil). Programa de Pos Graduacao em Geociencias

    2008-07-01

    The portion of Brazilian continental margin located between the Pernambuco Shear Zone (ZCPE) and Touros High, enclosing Natal Platform and Paraiba basin, NE Brazil, presents a thin sedimentary cover represented by Neo- Cretaceous deposits, over an elevated basement. In this zone the narrow platform ends abruptly against the ocean plate, forming a scarped slope. This area corresponds to the Transverse zone of Northeast Brazil (TZN) limited by two extensive transcurrent E-W shear zones that acted as accommodation zones for the strain produced by the advance of the southern and northern rift branches. During the Aptian, the rift suffered a NE deflection and contoured the Borborema Province and the TZN. The resistance of this block to the rift advance generated a prominent and elevated region into the Atlantic gulf which resulted in the absence of rift deposition over the Brazilian margin and its deviation to the African side. The model suggested by this paper denominates this area as the 'exception zone' of the Brazilian margin, which possess a poor petroliferous potential and need to be separated from the sector corresponding to the Pernambuco basin, located to south of ZCPE, representing the last piece of margin before the rift deflection and possessing an important petroliferous potential. (author)

  7. Análise Multitemporal da Cobertura Florestal da Microbacia do Arroio Grande, Santa Maria, RS Multitemporal Analysis of Forest Cover in the Arroio Grande Small Hydrological Basin, Santa Maria, RS

    Directory of Open Access Journals (Sweden)

    Joel Juliano Kleinpaul

    2011-03-01

    Full Text Available

    Este trabalho teve como objetivo realizar uma análise multitemporal da cobertura florestal da microbacia do Arroio Grande, Santa Maria, RS. Foram utilizadas quatro imagens de satélite: LANDSAT 5 (1987, LANDSAT 5 (1995, LANDSAT 7 (2002 e CBERS 2 (2005. As imagens foram classificadas empregando-se o algoritmo Bhattacharya. Após a classificação das imagens, foi realizado o cruzamento dos mapas temáticos. Como resultado, obteve-se mapas com os seguintes usos da terra: cobertura florestal, regeneração e desmatamento, ou seja, as florestas que permaneceram inalteradas de uma época para outra, as que regeneraram e as que foram desmatadas. Para um período de 18 anos, a cobertura florestal aumentou 10,24% na área da microbacia, passando de 14.135,42 ha (40,01% em 1987 para 17.752,20 ha (50,25% em 2005. Isto ocorreu devido à entrada em vigor do Código Florestal Estadual, à conscientização dosproprietários rurais e à implantação em maiorescala de povoamentos de espécies exóticas no estado. 
    This work aims to carry out a multitemporal analysis of the forest cover of Arroio Grande small hydrological basin located in Santa Maria, RS, Brazil. Four satellite images were used: LANDSAT 5 (1987, LANDSAT 5 (1995, LANDSAT 7 (2002 and CBERS 2 (2005. The images were classified according to the Bhattacharya algorithm. After the classification of such images, the crossing of the thematic maps was accomplished. Maps with different land uses were obtained: unaffected forest cover, regeneration and deforestation for the period 1987 – 2005. During 18 years, the forest cover increased 10,24% in the basin area, changing from 14.135,42 ha (40,01% in 1987 to 17.752,20 ha (50,25% in 2005. This happened because the State Forest Law has become effective as well as the rural owners’ consciousness and also due to increment of exotic forest plantations in the State. 

  8. Contribuição para o conhecimento dos parasitos de peixes do litoral do Estado da Guanabara - parte II Contribution to the knowledge of the parasites of fishes in Guanabara State

    Directory of Open Access Journals (Sweden)

    Delir Corrêa Gomes

    1972-01-01

    Full Text Available No presente trabalho os autores criam uma nova espécie para o gênero Lecithochirium Luehe, 1901, ficando no 3º grupo de distribuição de Freitas & Gomes (1971, mais se aproximando de L. manteri Freitas & Gomes, 1971, distinguindo-se principalmente por possuir saco genital aberto, vesícula ejaculadora externa ausente, vesícula seminal trilobada e ovos maiores. Apresentam Promatomus saltatrix (L. como novohospedador para Parahemiurus merus (Linton, 1910 Yamaguti, 1938 ressaltando as variações encontradas nas medidas. Para Acanthocollaritrema umbilicatum Trav., Freitas e Bührnheim, 1965, acusam a presença do gonotil, e por esta razão acham que provavelmente Acanthocollaritrematinae Trav., Freitas e bührnheim, 1965, deva pertencer à família Cryptogonimidae Ciurea, 1933. Referem ainda a presença de Bucephalopsis callicotyle Kohn, 1962, Microcotyle pomatomi Goto, 1899 (polistomata e larvas de Trypanorhyncha Diesing, 1863 (Cestoda0, em Pomatomus saltatrix (L..In the present work the authors propose a new species under the genus Lecithochirium Luehe, 1901, wich is enclosed in the third group of Freitas & Gomes distribuition (1971, nearest to L. manteri Freitas & Gomes, 1971, differing from it mainly by possessing open type sinus sac, externai ejaculatory vesicle lacking, seminal vesicle divided into 3 parts and bigger eggs. The authors present Pomatomus saltatrix (L. as a new host record for Parahemiurus merus (Linton, 1910 Yamaguti, 1938, giving the variations they found in measurements. To Acanthocollaritrema umbilicatum Trav., Freitas & Bührnheim, 1965 they add the presence of complex genital atrium and for this reason suggest that probably Acanthocollaritrematinae Trav., Freitas & Bührnheim, 1965 must be put under Cryptogonimidae Ciurea, 1933. They also refer Bucephalopsis callicotyle Kohn, 1962, Microcotyle pomatomus Goto, 1899 (Polystomata and some immature cestode under Trypanorhyncha Diesing, 1863 (Cestode, in Pomatomus saltatrix (L..

  9. Oceanographic characteristics of an impacted coastal bay: Baía de Guanabara, Rio de Janeiro, Brazil

    Science.gov (United States)

    Kjerfve, Björn; Ribeiro, Cesar H. A.; Dias, Gilberto T. M.; Filippo, Alessandro M.; Da Silva Quaresma, Valéria

    1997-11-01

    Baía de Guanabara is a 384 km 2 eutrophic coastal bay in Brazil, impacted by the polluted discharge from the Rio de Janeiro metropolitan area. The structurally controlled bay has a central channel with a depth of 30 m and a sandy bottom near the entrance, reflecting wave and tidal forcing. In contrast, the bay-averaged water depth is 5.7 m and the bottom sediments are mostly muds as a result of the Holocene transgression and rapid fluvial sedimentation, accelerated by channelization of rivers and deforestation. An extensive sand bank is located seaward of the bay entrance and a flood-oriented sand wave system indicates sand transport into the bay. The mean freshwater discharge measures 100±59 m 3 s -1 and is greatest in the rainy austral summer in December and January. Tides are mixed mainly semidiurnal with a range of 0.7 m, and peak spring tidal currents reach 0.5 m s -1 inside the bay and 1.6 m s -1 near the bay entrance. The passage of northward propagating polar fronts results in regular strong southwesterly winds and heavy wave forcing. The bay has mean salinities from 21.0 to 34.5‰ with an average of 29.5±4.8‰. The vertical salinity stratification, Δs/s, varies from 0.06 to 0.21 and is relatively weak and inversely proportional to rms tidal currents. The residual circulation is characterized by both gravitational circulation and transverse residual tidal circulation, measuring 800 and 400 m 3 s -1 respectively. The renewal time of 50% of the bay water volume is 11.4 days. Untreated sewage runoff enters the bay from the west, resulting in locally poor water quality, where the near-bottom mean dissolved oxygen measures only 3.1 mg 1 -1 and results in anoxic bottom muds. The worst water quality is indicated by average fecal coliform of 1140 counts ml -1 and excessive ammonia and phosphate loading. The average chlorophyll concentration in this region responds to the nutrient loading and exceeds 130 μg 1 -1 although 57 μg 1 -1 is the overall mean for

  10. Application of Constant Rate of Supply model (CRS) in dating of Guanabara Bay sediments using 210Pb measures

    International Nuclear Information System (INIS)

    Braganca, Maura Julia Camara da Silva

    1992-09-01

    A geochronological study of the Guanabara Bay (Rio de Janeiro, Brazil) based on 210P b dating technique to determine sedimentation rates and using the Constant Rate of Supply model (CRS) is presented in this work. Sediment samples were collected from river-head of Estrela, Sao Joao de Meriti, Guapimirim, Guaxindiba e Imbuacu. A low energy gamma spectrometry ( 210P b, samples taken from the Estrela and Sao Joao de Meriti rivers. Radiochemical method was applied to determine the amount of 210P b in samples collected near Guapimirim, Guaxindiba and Imbuacu Rivers. Atomic absorption spectrometry with air-acetylene flame technique was used to determine the amount of copper in all these samples. Experimental data shown the following variation in the concentration levels of copper and 210P b: (i) copper; from 2.5 μg/g to 37.1 μg/g (Imbuacu River); from 3.6 to 228.1 μg/g (Estrela River); from 11.6 to 73.4 μg/g (Guapimirim River); from 12.0 to 52.9 μg/g (Guaxindiba River) and from 90.8 to to 237.7 μg/g (Sao Joao de Meriti River), (ti) 210P b; from 2.0 Bq/kg to 27.0 Bq/kg (Imbuacu River); from 25.2 to 136.6 Bq/kg (Estrela River); from 40.0 to 90.0 Bq/kg (Sao Joao de Meriti River); from 7.0 to 70.0 Bq/kg (Guapimirim River); from 10.0 to 48.0 Bq/kg (Guaxindiba River). The sedimentation rates ranged from 0.30 cm/y in the Imbuacu River for a depth below of 35 cm to 1.3 cm/y for 0-30 cm depth in Guaxindiba River. It was concluded that the experimental data found in this work are consistent with those published in the scientific literature and that they can be predicted by the CRS model. (author)

  11. Ecological distribution of stream macroalgal communities from a drainage basin in the Serra da Canastra National Park, Minas Gerais, Southeastern Brazil

    Directory of Open Access Journals (Sweden)

    Necchi-Júnior O.

    2003-01-01

    Full Text Available Twelve stream segments were sampled four times in 1998-1999 (one sampling per season in the drainage basin of the upper São Francisco River (19º45'-21º25'S, 49º05'-51º30'W, situated in Serra da Canastra National Park, at altitudes ranging from 1,175 to 1,400 m. The macroalgae survey resulted in 30 species, with a predominance of Cyanophyta (12 species = 40% and Chlorophyta (11 species = 36.5% and a lower proportion of Rhodophyta (seven species = 23.5%. Two species, Klebsormidium rivulare (Chlorophyta and Kyliniella latvica (Rhodophyta, were new records for Brazil. Capsosira sp. and Stigonema sp. (Cyanophyta and the "Chantransia" stage of Batrachospermum (Rhodophyta were the most widespread macroalgae, occurring in six sampling sites, whereas 11 species were found at only one site. The proportion of macroalgal morphological types were as follows: mats (33%, free filaments (27%, gelatinous filaments (27%, crusts (7%, tufts (3%, and gelatinous colonies (3%. The flora revealed few species in common (4%-8% with stream macroalgae from other Brazilian regions. The macroalgal communities proved to have species richness values close to the highest values reported in previous studies. The patterns typical for stream macroalgal communities (patchy distribution and dominance of few species were also found in this basin. However, the stream variables most influential in macroalgal distribution in this study (rocky substratum, low pH, high COD, water color, and current velocity were essentially the same that best describe the limnological characteristics of this lotic ecosystem. In addition, this combination of variables differed sharply from results of previous studies in other Brazilian stream ecosystems.

  12. Ribeira do Iguape basin water quality assessment for drinking water supply; Avaliacao da qualidade da agua na bacia hidrografica do Ribeira de Iguape com vistas ao abastecimento publico

    Energy Technology Data Exchange (ETDEWEB)

    Cotrim, Marycel Elena Barboza

    2006-07-01

    Ribeira do Iguape Basin, located in the Southeast region of Sao Paulo state, is the largest remaining area of Mata Atlantica which biodiversity as rich as Amazon forest , where the readiness of water versus demand is extremely positive. With sparse population density and economy almost dependent on banana agriculture, the region is still well preserved. To water supply SABESP (Sao Paulo State Basic Sanitation Company). Ribeira do Iguape Businesses Unit - RR, uses different types of water supplies. In the present work, in order to ascertain water quality for human consumption, major and minor elements were evaluated in various types of water supply (surface and groundwater's as well as the drinking water supplied). Forty three producing systems were monitored: 18 points of surface waters and treated distributed water, 10 points of groundwater and 15 points of surface water in preserved areas, analyzing 30 elements. Bottom sediments (fraction < 63 {mu}m) were also evaluated. The sampling period covered dry and wet seasons from March 2002 to February 2003. The descriptive analysis showed that Al, Fe and Mn, exceeding CONAMA 357 quality guideline. A comparison of the elemental concentrations with the Brazilian Drinking Water Legislation (Portaria 518/04) showed that with the exception of some violations, the levels of all the elements investigated were below the Brazilian Legislation maximum allowed concentrations. This study examined the relationship between the type of water supply and the quality of water used, showed different characteristics on Ca, Fe, Mn concentration. In bottom sediments (fraction <63 {mu}m), Al, Fe and Mg largest concentrations were found. Pb and Zn presents concentrations up to 142,0 {mu}g.g{sup -1} and 172 {mu}g.g{sup -1}, respectively. Data revealed that trace elements concentration in the sediment were below PEL (Probable Effect Level - probable level of adverse effect to the biological community), exception for Pb in Sete Barras and

  13. SE Vietnam U-Pb zircon ages and provenance: Correlating the Da Lat Zone on land with the Cuu Long Basin offshore

    Science.gov (United States)

    Hennig, J.; Breitfeld, H. T.; Gough, A.; Hall, R.; Trinh, L. T.; Mai, V. K.; Dinh, S. Q.

    2017-12-01

    The offshore Neogene Cuu Long Basin SE of Vietnam includes thick sedimentary successions that include important hydrocarbon reservoirs. Zircon U-Pb ages were obtained from these sediments, and Mesozoic igneous and sedimentary rocks exposed on land in the nearby Da Lat Zone of SE Vietnam, to study provenance, sources, stratigraphic relations and sediment pathways. Zircons from several intrusions assigned to the Dinh Quan, Deo Ca and Ankroet complexes yielded Cretaceous weighted mean ages (c. 122-76 Ma). Metasediments of the Jurassic Ban Don Group contain dominant Jurassic, Permo-Triassic and Paleoproterozoic (c. 1.8 Ga) age populations. Neogene to Pleistocene formations locally exposed in the Da Lat Zone are probable equivalents of the offshore sediments. Zircons from the Oligocene to Miocene Di Linh Formation show a dominant Cretaceous peak and minor Permo-Triassic and Paleoproterozoic ages, and are interpreted to be derived from Cretaceous magmatic complexes and subordinate Cathaysian basement of Indochina and South China. The younger Early Pliocene to Pleistocene Song Luy Formation has a different provenance with dominant Permo-Triassic and Paleoproterozoic peaks, an additional Silurian-Ordovician peak, as well as some zircons with Cambrian to Neoproterozoic ages. They are interpreted to be related to magmatism and metamorphism associated with Caledonian and Indosinian events that overprinted the basement exposed in the Kontum Massif and further north in North Vietnam and South China. The Late Pliocene to Pleistocene Ba Mieu Formation shows a very similar zircon age distribution but contains a higher proportion of Precambrian ages (c. 1.8 and 2.5 Ga) from these basement rocks. Only a few Jurassic ages were acquired, indicating the Jurassic Ban Don Group was not an important source. Oligocene samples analysed from the Cuu Long Basin show a significant component of Cretaceous and minor Permo-Triassic zircons. In contrast, Middle Miocene sandstones have a dominant

  14. Bioconcentração e biomagnificação de metilmercúrio na baía de Guanabara, Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Helena A. Kehrig

    2011-01-01

    Full Text Available Methylmercury was determined in water and aquatic biota from Guanabara Bay. Trophic transfer of methylmercury was observed between trophic levels from prey (microplankton, mesoplankton and fish with different feeding habits to top predator (pelagic demersal fish. Top predator fish presented the highest methylmercury concentrations (320.3 ± 150.7 mg kg-1 dry wt., whereas microplankton presented the lowest (8.9 ± 3.3 mg kg-1 dry wt.. The successive amplification of methylmercury concentrations and its bioconcentration factor with increasing trophic levels from base to top indicate that biomagnification may be occurring along the food web. Results suggest the importance of feeding habits and trophic level in the bioaccumulation of methylmercury by aquatic biota.

  15. Levels of chromium contamination in the estuary of the Iraja river (Guanabara Bay) and experimental incorporation of 51Cr in barnacles (Balanus sp)

    International Nuclear Information System (INIS)

    Weerelt, M.D.M.V.

    1982-01-01

    Levels were determined of chromium contamination in the estuary of Iraja River, produced by an electroplating industry located 3 km upstream the study area. Uptake-and release kinetics of Cr(VI) and Cr(III) in barnacles (Balanus sp.) were studied. Samples of barnacles and suspended particles from Guanabara Bay were analysed. Chromium concentrations (dry weight) ranged from not detectable (ND) to 154,66 μg/g for soft tissues and from ND to 423,76 μg/g for suspended particles. Mean of maximum concentrations of chromium in samples from Guanabara Bay are 3 and 4 times above those of identical samples from control area (Coroa Grande). Soft tissues presented a concentration factor (CF) of 10 3 related to chromium available in suspended particles. 51 Cr(VI) is preferentiably incorparated by soft tissues (biological half life being 100 days). Chromium uptake by Balanus sp from solution is as significant as it is from particulate matter available in sea water from experimental sets. CF for Cr(VI) in soft tissues in laboratory conditions was 10 2 related to 51 Cr present in sea water. Environmental chromium contamination was found to be of the same order of magnitude or above levels reported for other areas subjected to industrial impacts. Barnacles appear to be able to accumulate chromium in soft tissues from the available metal in the environment. Cr(VI) is the critical form, being greatly accumulated in soft tissues of barnacles, that act as a long-term integrator of this metal. For Cr(III), this organism can only be regarded as an instantaneous indicator of environmental contamination of chromium attached to suspended particles. (M.A.) [pt

  16. A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema, Paraná River basin

    Directory of Open Access Journals (Sweden)

    Hélio Martins Fontes Júnior

    Full Text Available The majority of the fish passages built in the Neotropical region are characterised by low efficiency and high selectivity; in many cases, the benefits to fish populations are uncertain. Studies conducted in the Canal da Piracema at Itaipu dam on the Parana River indicate that the system component designated as the Discharge channel in the Bela Vista River (herein named Canal de deságue no rio Bela Vista or CABV, a 200 m long technical section, was the main barrier to the upstream migration. The aim of this study was to evaluate the degree of restriction imposed by the CABV on upstream movements of Prochilodus lineatus and Leporinus elongatus, Characiformes. Fish were tagged with passive integrated transponders (PIT tags and released both downstream and upstream of this critical section. Individuals of both species released downstream of the CABV took much more time to reach the upper end of the system (43.6 days vs. 15.9 days, and passed in much lower proportions (18% vs. 60.8% than those tagged upstream of this component. Although more work is needed to differentiate between fishway effects and natural variation in migratory motivation, the results clearly demonstrate passage problems at the CABV.

  17. A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin

    Science.gov (United States)

    ,; Fontes Júnior, Hélio Martins; Makrakis, Sergio; Gomes, Luiz Carlos; Latini, João Dirço

    2012-01-01

    The majority of the fish passages built in the Neotropical region are characterised by low efficiency and high selectivity; in many cases, the benefits to fish populations are uncertain. Studies conducted in the Canal da Piracema at Itaipu dam on the Parana River indicate that the system component designated as the Discharge channel in the Bela Vista River (herein named Canal de deságue no rio Bela Vista or CABV), a 200 m long technical section, was the main barrier to the upstream migration. The aim of this study was to evaluate the degree of restriction imposed by the CABV on upstream movements of Prochilodus lineatus and Leporinus elongatus, Characiformes. Fish were tagged with passive integrated transponders (PIT tags) and released both downstream and upstream of this critical section. Individuals of both species released downstream of the CABV took much more time to reach the upper end of the system (43.6 days vs. 15.9 days), and passed in much lower proportions (18% vs. 60.8%) than those tagged upstream of this component. Although more work is needed to differentiate between fishway effects and natural variation in migratory motivation, the results clearly demonstrate passage problems at the CABV.

  18. Seleção dos indicadores da qualidade das águas superficiais pelo emprego da análise multivariada Surface water quality indicators in low Acaraú basin, Ceará, Brazil, using multivariable analysis

    Directory of Open Access Journals (Sweden)

    Eunice M. de Andrade

    2007-12-01

    Full Text Available Os fatores antrópicos e naturais que determinam a qualidade das águas superficiais na Bacia do Baixo Acaraú foram identificados pelo emprego da técnica de Análise Fatorial/Análise da Componente Principal (AF/ACP. Foram realizadas quatro campanhas no período de fev./2003 a mar./2004, em sete pontos de amostragem localizados ao longo do Rio Acaraú. Foram analisados 25 parâmetros físico-químicos e bacteriológicos. Pelo emprego da AF/ACP, identificou-se que o modelo de melhor ajuste para expressar a qualidade das águas na Bacia do Baixo Acaraú foi aquele composto por quatro fatores, explicando 82,1% da variância total. O primeiro fator representa a componente de sólidos em suspensão, expressando o processo de erosão e escoamento superficial. O segundo fator é definido por uma componente de nutrientes associados aos esgotos sanitários, às áreas agrícolas e a outras fontes de poluição difusa; o terceiro fator é indicativo da ação antrópica (componente orgânica, enquanto o quarto representa os sais solúveis que expressam o processo natural do intemperismo das rochas. Outro ponto observado é que a análise fatorial não resultou em grande redução no número de variáveis, uma vez que o melhor ajuste do modelo ocorreu com a inclusão de 18 das 25 variáveis analisadas.Multivariate statistical technique, factor analysis/principal component analysis (FA/PCA, was applied to identify the human activity effects and natural processes on surface water quality in Low Acaraú basin, Ceará, Brazil. Water samples were collected in four different campaigns from Feb/2003 to Mar/2004, at seven sampling stations sited in low Acaraú watershed. Twenty-five physical, chemical and bacteriological parameters were examined in this study. The FA/PCA allowed the identification of the total variance. The best model was adjusted with four components, explaining 82.1% of the data variance. The first factor was mainly associated with suspended

  19. Gestão democrática das águas: o caso da microbacia do rio Cachoeira, Antonina - PR. (Democratic management of the waters: the Cachoeira River basin case in Antonina - PR.

    Directory of Open Access Journals (Sweden)

    Ricardo Silva Gama

    2009-01-01

    Full Text Available Resumo: Desenvolve o artigo apresentação acerca da gestão de recursos hídricos na microbacia do Rio Cachoeira, Antonina - PR (Bacia Hidrográfica Litorânea do Estado do Paraná, com foco na infl uência da atividade de geração hidrelétrica na interação entre os sujeitos envolvidos nesta problemática. A base de análise dirigese para a constatação de efeitos sociais e ambientais decorrentes dessa atividade, mediante uma prévia descrição das características da bacia e da usina hidrelétrica situada em seus limites, passando-se a uma discussão acerca de seus principais efeitos ambientais e sociais, confrontando, ao final, a hipótese levantada no artigo e esmiuçada ao longo do trabalho.Abstract: This article introduces a study about the water resources management in the Cachoeira River basin in Antonina - PR (Paraná State Coastal River Basin, focusing on the infl uence of the activities regarding the generation of hydroelectric power on the relationship between the social actors involved on the issue. The analysis aims at identifying the social and environmental effects of this activity by presenting a description of the characteristics of the river basin and of the hydroelectric power station established in its limits, while also promoting a discussion about its environmental and social effects and confronting the hypothesis posed and detailed throughout the article in its conclusion.

  20. Estimativa de recarga da bacia do Rio das Fêmeas através de métodos manuais e automáticos Estimates of the recharge in the Femeas River basin by manual and automatic methods

    Directory of Open Access Journals (Sweden)

    Ana C. L. S. Albuquerque

    2011-11-01

    Full Text Available Na região do oeste baiano, na qual se encontra a bacia do Rio das Fêmeas, a água subterrânea tem sido progressivamente procurada como fonte de abastecimento, haja vista a baixa densidade de drenagem da região e a crescente demanda por água, sobremaneira para projetos de irrigação. O objetivo do presente estudo é, a partir de dados de vazão, calcular a recarga da água subterrânea por meio de duas metodologias: Arnold & Allen (1999 e Rutledge & Daniel (1994, para o período de 1977 a 2007. A precipitação média anual para a bacia do Rio das Fêmeas foi de 1121,83 mm ano-1 e a vazão média anual igual a 50,28 m³ s-1, ambas apresentando tendência de queda significativa ao longo dos anos. As taxas de recarga foram de 4% da P total (Arnold & Allen, 1999 e de 17% (Rutledge & Daniel, 1994. Com referência ao escoamento de base (aproximadamente 250 mm ano-1, o último método mostrou-se melhor na estimação da recarga.In Western Bahia, where the Fêmeas River Basin is located, groundwater has been increasingly utilized, given the low density of drainage in the region and the growing demand for water, mainly irrigation projects. The objectives of this study are based on flow data to calculate the recharge of groundwater in the Femeas basin using two methods: Arnold & Allen (1999 and Rutledge & Daniel (1994, in the period of 1977 to 2007. The mean annual precipitation in the Fêmeas River Basin in the studied period was 1121.83 mm year-1 and the mean stream flow was 50.28 m³ s-1 year-1. Both showed a significant decreasing trend over the years. The mean base flow found for the basin was 257.41 mm year-1. The rates of recharge were 4% of total P (Arnold & Allen, 1999, and 17% (Rutledge & Daniel, 1994. Considering the basin discharge (around 250 mm year-1, the latter method seems to be better in estimating recharge.

  1. A propósito da edição do livro de Zacharias Wagener, "Zoobiblion: livro de animais do Brasil"

    Directory of Open Access Journals (Sweden)

    Estévão Pinto

    1965-06-01

    Full Text Available Edgard de Cerqueira Falcão é um incansável pesquisador e estudioso da nossa história, sobretudo artística, já tendo publicado vários ensaios preciosos, entre os quais se destacam, a partir de 1940 — Relíquias da Bahia (introdução de Rubens do Amaral, Roteiro de Paulo Afonso (ocupa-se das igrejas e conventos coloniais de Penedo, Fortes Tradicionais da Cidade do Salvador, Encantos Tradicionais da Bahia, Rio de Janeiro (Terras e Águas de Guanabara e Relíquias da Terra do Ouro; tôdas essas obras fazem parte da coleção "Brasil Pitoresco, Tradicional e Artístico" .

  2. Time-variations of equivalent water heights'from Grace Mission and in-situ river stages in the Amazon basin Variações temporais do equivalente à altura d'água obtidas da Missão Grace e da altura d'água in-situ nos rios da bacia Amazônica

    Directory of Open Access Journals (Sweden)

    Flavio Guilherme Vaz de Almeida

    2012-03-01

    Full Text Available Gravity Recovery and Climate Experiment (GRACE mission is dedicated to measuring temporal variations of the Earth's gravity field. In this study, the Stokes coefficients made available by Groupe de Recherche en Géodésie Spatiale (GRGS at a 10-day interval were converted into equivalent water height (EWH for a ~4-year period in the Amazon basin (from July-2002 to May-2006. The seasonal amplitudes of EWH signal are the largest on the surface of Earth and reach ~ 1250mm at that basin's center. Error budget represents ~130 mm of EWH, including formal errors on Stokes coefficient, leakage errors (12 ~ 21 mm and spectrum truncation (10 ~ 15 mm. Comparison between in situ river level time series measured at 233 ground-based hydrometric stations (HS in the Amazon basin and vertically-integrated EWH derived from GRACE is carried out in this paper. Although EWH and HS measure different water bodies, in most of the cases a high correlation (up to ~80% is detected between the HS series and EWH series at the same site. This correlation allows adjusting linear relationships between in situ and GRACE-based series for the major tributaries of the Amazon river. The regression coefficients decrease from up to down stream along the rivers reaching the theoretical value 1 at the Amazon's mouth in the Atlantic Ocean. The variation of the regression coefficients versus the distance from estuary is analysed for the largest rivers in the basin. In a second step, a classification of the proportionality between in situ and GRACE time-series is proposed.A missão espacial Gravity Recovery and Climate Experiment (GRACE é dedicada às medidas das variações temporais no campo gravitacional da Terra. Neste estudo, os coeficientes de Stokes disponibilizados pelo Groupe de Recherche en Géodésie Spatiale (GRGS com intervalos de 10 dias foram convertidos no equivalente à altura d'água (EWH para um período de 4 anos na bacia Amazônica (de julho de 2002 a maio de 2006

  3. Structural control of the basement in the central portion of the Santos Basin-Brazil; Controle estrutural do embasamento na porcao central da Bacia de Santos

    Energy Technology Data Exchange (ETDEWEB)

    Izeli, Maira G.B.; Morales, Norberto; Souza, Iata A. de [Universidade Estadual Paulista (UNESP), Rio Claro, SP (Brazil). Inst. de Geociencias e Ciencias Exatas

    2008-07-01

    New discoveries of oil in deep water and ultra-deep water in Santos Basin suggest that it needs to be studied to better understanding of basement structures and their role in the basin control and configuration. This study characterizes the main tectonic structures of a portion at the central area of this basin, looking for their relation to the geological basement framework. The study is based on the integration of the geological and geophysical data from subsurface (offshore) and surface of the adjacent continent. These analyses include the continental structures that continue in direction of this basin (Guapiara Lineament and Ponta Grossa Arc), checking their possible influence on the basin evolution and deformation. To achieve the proposed goals, the Precambrian basement lineaments were extracted from the offshore area using remote sensing, as result was obtained strong NW-SE structural trend. According to the interpretation of seismic sections, it is possible to observe that this portion of the basin presents main NE-SW structural trend, and most of the structures are typical of passive margin and halokintics process. It is possible to see that some recognized faults in the rift deposits may be coinciding with the main continental guidelines which are projected into the basin. (author)

  4. Investigation of the presence of toxic components of petroleum hydrocarbons in Guanabara Bay, Brazil following the 2000 PETROBRAS fuel oil spill

    Energy Technology Data Exchange (ETDEWEB)

    Romao, Catia Maria [Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renovaveis (IBAMA), Rio de Janeiro, RJ (Brazil). Escritorio de Licenciamento de Petroleo e Nuclear; Vleet, Edward S. Van

    2003-07-01

    On January 18, 2000, approximately 340,000 gallons of marine fuel 380 oil were released into Guanabara Bay, Rio de Janeiro, Brazil, as a consequence of a pipeline transfer accident at the Duque de Caxias Refinery (PETROBRAS). Two years after the spill, the present investigation (sponsored by Center for Disaster Management and Humanitarian Assistance - College of Public Health - University of South Florida) was conducted to assess the levels of Polycyclic Aromatic Hydrocarbons (PAHs) on samples of water, sediments and edible tissue of the fishes (Mullet - Mugilliza and Croaker - Micropogonias furnieri) collected using two types of device (nets and fish traps) from the spill area in July and August 2002. The fishes samples collected in both months were considered to range from being not contaminated to being moderately contaminated by PAHs. Among all the sediments, only one (Point 10, July 2002) showed a total PAH concentration representing highly contaminated conditions. Except for Point 10, all other sediments could be considered minimally to moderately contaminated. Dissolved PAH concentrations found in the water samples were considered to range from minimally to moderately contaminated. (author)

  5. GIS (Geographic Information Systems) based calculation on hydrocarbon generated volume: Amazon Basin example; O uso de SIG no calculo de hidrocarbonetos gerados: exemplo da Bacia do Amazonas

    Energy Technology Data Exchange (ETDEWEB)

    Pedrinha, Saulo; Simoes, Leonardo; Goncalves, Felix T.T.; Carneiro, Jason T.G. [Petroleum Geoscience Technology Ltda. (PGT), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The calculation of the volume of hydrocarbons generated from a particular source rock a sedimentary basin provides numerical data that help to better describe the petroleum system, and evaluate its potential. Among the various methodologies developed for calculating the volume of oil there is a proposal by Schmoker (1994), which has the advantage to take into account the occurrence of the source rock area in the basin, and the spatial variations in the main geological parameters. Using the tools of a GIS, through the manipulation of georeferred maps, it is possible to calculate the volume of oil generated in a way that would be virtually impossible by using punctual data, only. Even the discretiation maps in minors areas allows, via attribute table in the GIS, the application of a Monte Carlo simulation, which allows to incorporate all the uncertainties related to the input data in the calculation, obtaining distributions of volumes associated with various parts of the final map being integrated throughout the basin. Isopac and maturation maps (Gonzaga et al., 2000), along with TOC data from Barreirinha formation, Amazon Basin, have been scanned and georeferred and, once in the GIS database, were treated in order to spatially distribute the geological properties of the source rock. Then, such maps were handled in accordance with Schmoker (1994) method, leading to a map of mass and distribution of oil generated in the basin at the regional scale. (author)

  6. CONSIDERAÇÕES MORFOMÉTRICAS DA BACIA DO RIO UBERABINHA – MINAS GERAIS / Morphometric considerations of the Uberabinha river basin – Minas Gerais

    Directory of Open Access Journals (Sweden)

    Antonio Feltran Filho

    2007-06-01

    Full Text Available The hydrographic basins demonstrate variables and attributes that make them unique. Themorphometric method that permits the utilization of techniques to obtain the indexes of existingnumber relations among the attributes of a drainage basin makes the knowledge of the variouslinear, area and hypsometric variables possible, which, added to the variable qualitatives,multiplies the possibilities for space analysis. The results obtained by this method serve as acomplement an aid to better explain the interaction that takes place among all the landscapeelements. This being the case, in this study, some basic morphometric surveys are sought in orderto obtain better knowledge of the hydrographic basin of the Uberabinha river, which will make itpossible to subsidize its planning. To reach this objective, cartographic maps from IBGE and theimage from the satellite TM/Landsat 5 from INPE to the scale of 1:100000 were used and computerprograms AutoCAD Map R13 and SPRING 4.2 were used to make the calculations. From theresults obtained, it was verified that the principal source of the Uberabinha river is, in realityfrom the Beija-Flor (Humming-bird creek and not from the Jacaré (Alligator stream. The greatdifference in the density of the rivers between the upper and lower thirds of the basin was alsoconfirmed. Another important geomorphological conclusion is the fact of its being a young basin.

  7. Tectonic inheritage from adjacent basement, north of the Campos Basin; Heranca tectonica no embasamento adjacente no norte da Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Ferroni, Felipe R. [Universidade Estadual Paulista (UNESP), Rio Claro, SP (Brazil); Castro, Joel C. de [Universidade Estadual Paulista (UNESP), Rio Claro, SP (Brazil). Inst. de Geociencias e Ciencias Exatas. Dept. de Geologia Aplicada; Souza, Iata A. de; Castro, Joel C. de [Universidade Estadual Paulista (UNESP), Rio Claro, SP (Brazil). Inst. de Geociencias e Ciencias Exatas

    2008-07-01

    The evolution of the Atlantic Brazilian basins is a target of researches since the firth discovery of oil deposits. With the advance of the geophysical methods the understanding of the structures in depth became possible. The objective of this paper is to determine if the adjacent basement in the north of Campos Basin has significant influence in the identification of areas that can contain hydrocarbons. Therefore, lineaments had been extracted with SRTM images of continental basement and the main alignment was correlated with gravimetric anomalies map and seismic data. Eight levels on seismic data had been interpreted (basement, top rift, shallow water Albian, Albian, mid-Oligocene and mid-Miocene). In all levels were identified a fault normal system, which cut sediments since basement until the Recent. The main direction of the basement is NE-SW, and the alignments formed for basin basement faults coincide with this direction, what indicates that the system is active and also genetically related. (author)

  8. Crato formation of the Araripe basin: a reservoir analogous to the Trairi limestone, Ceara basin, Brazil; Formacao Crato da Bacia do Araripe: um reservatorio analogo ao Calcario Trairi (Formacao Paracuru), Bacia do Ceara

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Agnelo Leite da [Pernambuco Univ., Recife, PE (Brazil)]. E-mail: agneloleite@bol.com.br; Neumann, Virginio Henrique [Pernambuco Univ., Recife, PE (Brazil). Centro de Tecnologia e Geociencias. Dept. de Geologia]. E-mail: Neumann@ufpe.br

    2003-07-01

    The Trairi limestone (Paracuru Formation of the Ceara Basin) and the Crato Formation (Araripe Basin) are analogs in the stratigraphy/sedimentology, in the depositional environment, in the chronology and in the deformational structures. The rocks of these units were deposited in Aptian-Albian, in a lacustrine system associate with fluvial-deltaic systems. These rocks are characterized by the deposition of levels of laminated limestones separate by lutaceous and arenaceous siliciclastic rocks. In these units are described structures, as microfaults, microslumps, loop bedding and fractures. The Xareu field, in the Ceara Basin, is already considered a mature field and it presents petroleum production problems. The study of the rocks of the Trairi Member in a direct way is difficult by the fact of they be on a water sheet thickness of about 50 meters. To decrease the investment costs in the study of the Trairi limestone, the study of Crato Formation rocks can be used in analogy, to contribute for a best understanding of the Trairi limestone. (author)

  9. ESTIMATIVA DO BALANÇO SEDIMENTAR DA BACIA DO RIO TIJUCAS (SC-BRASIL A PARTIR DA APLICAÇÃO DO MODELO HIDROLÓGICO SWAT / ESTIMATE OF SEDIMENT BUDGET OF THE TIJUCAS RIVER BASIN APPLYING SWAT HYDROLOGIC MODEL

    Directory of Open Access Journals (Sweden)

    Jean Berná Paim

    2009-12-01

    Full Text Available Adopt a basin as a hydrological unit to understand the physical processes related to the water and sediment production is important because its characteristics (area, shape and topography can determine its use in a sustainable manner. This study is aim in the test of the applicability of hydrologic model SWAT (Soil and Water Assessment Tool in the Tijucas River Basin to quantify the water and sediment production along it sub-basins. Together, geoprocessing techniques were applied with the creation of a database of geographical information to describe the region. On this database is included the daily precipitation an temperature data of the gauges distributed on the watershed, soil data, a land use map and the digital elevation model (DEM to create the Hydrologic Response Units (HRU’s. A time series with flow values and sediment concentration measured are very important to calibrate and validate the model output parameters. After the calibration of the initial results, the Flow Gauge number 102 presented a Nash and Sutcliffe Coefficient - COE = 0.6 indicating a good adjust of the model. The results were used to create a sediment production map for Tijucas River Basin, when the 10 years average ranged between 0.5 ton/ha and 9.0 ton/ha in some sub-basins.

  10. Analysis of the influence of the Colatina Belt in the Campos and Espirito Santo Basins-Brazil; Analise da influencia da Faixa Colatina nas Bacias de Campos e Espirito Santo

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Gustavo Henrique Teixeira da; Simoes, Luiz Sergio Amarante; Souza, Iata Anderson de [Universidade Estadual Paulista (UNESP), Rio Claro, SP (Brazil). Inst. de Geociencias e Ciencias Exatas

    2008-07-01

    Recent discoveries in the Espirito Santo Basin confirm the importance of it in the national exploratory scenery (oil and gas production). The new fields like Carapo and Camarupim, beyond others, next to already known Golfinho and Canapu, totalize an addition of 560 million barrels. In this way, studies in the area add importance, as the case of the present research, where if it looked to analyze the influence of Colatina Belt in Espirito Santo Basin and secondarily in Campos Basin. The results had been gotten through the integration of diverse data, such as lineaments extracted from images SRTM, potential maps and analyze of seismic lines. It was concluded that the Colatina Belt if projects for the interior of the basins, but that the same one seems to be dislocated in relation to the direct projection of the continental features, being that its influence can be felt with bigger emphasis in the Campos Basin, while in the Espirito Santo it look like to have low importance with regard to the exploration aspects. Also it was verified the presence of numerous halo kinetic structures that affect all the mapped horizons, this element determine great importance in the generation of structural traps. (author)

  11. O Comitê da Bacia Hidrográfica do Rio São Francisco e a Gestão das Águas: O Conflito Exposto a Partir da Transposição do Rio São Francisco | The São Francisco River Basin Committee and Water Management Conflict Arising from the Transposition of The River

    OpenAIRE

    Ana Paula Novais Pires

    2014-01-01

    Introduction: The São Francisco River Basin Committee (CBHSF) was set up by presidential decree in 2001 with the aim of achieving decentralized and participatory management of its water. The São Francisco River flows overland for 2700 km from its source in the Serra da Canastra (MG) to its mouth between Sergipe (SE) and Alagoas (AL). The river passes through the states of Bahia (BA), Pernambuco (PE), Goiás (GO) and the Federal District (DF). Central to the discussion in this research on the ...

  12. Efeito da variabilidade da precipitação pluvial e do uso e manejo do solo sobre o escoamento superficial e o aporte de sedimento de uma bacia hidrográfica do Distrito Federal Effect of rainfall variability and land use on runoff and sediment in the Pipiripau river basin, in the Distrito Federal, Brazil

    Directory of Open Access Journals (Sweden)

    Henrique Marinho Leite Chaves

    2008-02-01

    Full Text Available O objetivo do presente trabalho foi avaliar o efeito da variabilidade da precipitação sobre o escoamento direto e sobre o aporte de sedimento na bacia do rio Pipiripau (A = 235 km², no Distrito Federal. Cinco anos típicos da série de precipitação foram selecionados: o ano mais úmido, o ano mais seco, o ano médio e dois anos que representaram os desvios-padrão da série (médio-seco e médio-úmido. Depois de o modelo ser calibrado com dados diários de chuva e vazão da bacia, simulações foram realizadas para cada evento chuvoso de cada um dos cinco anos selecionados da série, e o escoamento direto e o aporte de sedimento da bacia foram calculados com a MUSLE em três diferentes cenários de uso e manejo do solo: o cenário atual, onde predomina o preparo convencional do solo (PC nas áreas de agricultura da bacia; o passado recente, em que predominava o Cerrado nativo (CER; e o cenário de plantio direto (PD, nas áreas de agricultura da bacia. Apesar de as vazões médias anuais observadas terem apresentado relação linear com os volumes de precipitação pluvial anual, em todos os cenários, o escoamento direto e o aporte de sedimento apresentaram aumento exponencial com o aumento da precipitação pluvial anual, sendo esse mais pronunciado na condição de preparo convencional (PC do que nos outros cenários estudados (CER e PD. O aumento observado pode ser explicado pela não-linearidade do modelo MUSLE ao volume de precipitação e ao volume de escoamento.The objective of this study was to evaluate the effect of the rainfall variability on the runoff and sediment amount in the Pipiripau river basin (A = 235 km², in the Distrito Federal, Brazil. To represent the climatic variability of the historic precipitation series, 5 years were selected: the moistest, the driest, an average, and 2 years representing the standard deviations from the series (half-wet and half-dry. After the calibration of the model with basin rainfall and

  13. Geochronologic study of sediments deposition of two lakes from the Rio Negro basin, Amazonas State, Brazil; Estudo geocronologico da deposicao de sedimentos de dois lagos da bacia do rio Negro/AM

    Energy Technology Data Exchange (ETDEWEB)

    Gomes, Ana Carla F.; Mozeto, Antonio A.; Cazotti, Raul I. [Sao Carlos Univ., SP (Brazil). Dept. de Quimica. Lab. de Biogeoquimica Ambiental]. E-mail: anacarla@dq.ufscar.br; Nascimento Filho, Virgilio F. [Centro de Energia Nuclear na Agricultura (CENA), Piracicaba, SP (Brazil). Lab. de Instrumentacao Nuclear; Taddei, Maria Helena [Comissao Nacional de Energia Nuclear, Pocos de Caldas, MG (Brazil). Laboratorio

    2000-07-01

    Since 1963 the radionuclide {sup 210}Pb became an important tool for dating (geochronology) recent sediments (up to 120 years). In this work the sedimentary geochronology of two lakes from the Negro River Basin was determined, using different radiochemical separation methods for {sup 210}Pb and {sup 226}Ra. (author)

  14. Paleomorphology of the upper part of the Macae formation, Namorado field, Campos basin; Paleomorfologia do intervalo superior da formacao Macae, Campo de Namorado, Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Barboza, Eduardo Guimaraes [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Inst. de Geociencias. Programa de Pos-Graduacao em Geociencias; Tomazelli, Luiz Jose; Ayup-Zouain, Ricardo Norberto [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Inst. de Geociencias. Centro de Estudos de Geologia Costeira e Oceanica; Viana, Adriano Roessler [PETROBRAS, Rio de Janeiro, RJ (Brazil). Exploracao e Producao. Edificio Sede

    2004-07-01

    The Macae Formation (Late Albian-Turonian of the Campos Basin) is represented by a thick column of carbonate sediments whose deposition began soon after the evaporitic phase that marks the beginning of the marine occupation of the basin. The top of this interval is represented by an unconformity (Type I), indicative of a variation in the base level of the basin, on which the turbidities of the basal sequence of the Namorado Field were deposited. For a better understanding of the depositional geometry of these turbidities, the paleogeomorphology analysis demonstrated to be quite efficient. The method of work used for so was a combination among the seismic 3D visualization (VoxelGeo{sup R}), from the characterization of different physical attributes of the seismic signal, and the facies analysis of wells profiles of the referred field. The developed analysis allowed the individualization and the three-dimensional visualization of a sinuous paleochannel in the top of the interval, until then not described in previous interpretations of this depositional system. With the information coming from this study, a better understanding of the genesis of this accumulation can be reached, especially in the part regarding to the units of important economic character, represented by the turbidities deposits and whose occurrences are related with stages of relative lowering of the sea level. (author)

  15. The Value of Information and Geospatial Technologies for the analysis of tidal current patterns in the Guanabara Bay (Rio de Janeiro)

    Science.gov (United States)

    Isotta Cristofori, Elena; Demarchi, Alessandro; Facello, Anna; Cámaro, Walther; Hermosilla, Fernando; López, Jaime

    2016-04-01

    tidal current patterns of the Guanabara Bay, venue for the sailing competitions of Rio 2016 Olympic Games. The methodology relies on the integration of a consistent amount of data collected in the field, hydrodynamic model output, cartography and "key-signs" visible on the water into a GIS, proving to be particularly useful to simplify the final information, to help the learning process and to improve the decision making.

  16. HIGH-RESOLUTION ACOUSTIC MAPPING OF GAS CHARGED SEDIMENTS AND LIVING BENTHIC FORAMINIFERA ASSEMBLAGES FROM THE NE REGION OF THE GUANABARA BAY (RJ, BRAZIL

    Directory of Open Access Journals (Sweden)

    Francielli Paula Delavy

    2016-10-01

    Full Text Available This work was performed in the NE region of the Guanabara Bay, a highly impacted Brazilian coastal system, located in Rio de Janeiro State. It aimed to: i identify and map the areas with occurrence of gas in the sediment, as well as its acoustic signature; ii characterize the physical properties of the sediments and; iii document the response of microbenthic organisms (living benthic foraminifera to changes in quantity and quality of organic matter. Seismic surveys at the frequency of 12 kHz identified a large area with about 50% gas charged sediments in the study area. The main acoustic signatures of the shallow gas were black shadow and gas blanket. In addition, features related to gas seepages to the water column (acoustic plumes and pockmarks and gas percolation within the sediments (intra-sedimentary plumes, turbidity pinnacles were also identified. The gas has a biogenic origin and results from the high sedimentation rate between 0.03 to 0.9 cm.year-1 and from the decomposition of large amount of organic matter (10-20%. Vertical distribution of gas ranges from few centimeters to 9 m below the water-sediments interface. These occurrences are related to both gas migration from lower sedimentary layers to Holocene muds above, and to recent generation in near-surface sediments as the area display favorable conditions for gas production. Cores ranging from 150-240 cm in length have predominantly muddy sediments and variations in the P-wave velocity followed the changes in sediment density, controlled mainly by the presence of gas in sediments, bioclasts accumulation, textural variation and percentage of organic matter. The TOC content and Rock-Eval pyrolysis parameters evaluated in nine surface sediment samples indicate that good to excellent amount of organic matter associated with moderate to good source potential for gas production is present in the study area. In these areas living benthic foraminifera are of reduced diversity and density

  17. Sedimentary thickness and velocity in the northeast boundary of the Parana Basin with Andean earthquakes and local events; Espessura e velocidade das camadas sedimentares na borda nordeste da Bacia do Parana utilizando telessismos da regiao andina e sismos locais

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Josimar A.; Souza, Luiz M. [Universidade de Sao Paulo (USP), SP (Brazil). Dept. de Geofisica; Assumpcao, Marcelo S. [Universidade de Sao Paulo (USP), SP (Brazil)

    2008-07-01

    Deep Andean earthquakes are a suitable source of high-frequency P-waves (with good signal to noise ratio up to {approx} 10 Hz) that can be used to obtain high-resolution receiver functions at stations in intra-cratonic basins in Brazil. Receiver functions (Gaussian width 20) at five stations in the Bebedouro seismic area (NE Parana Basin) were calculated using the time domain deconvolution of Ligorria and Ammon (1999). Inter-station Rayleigh wave phase velocities were measured using local earthquakes. Joint inversion of receiver functions and Rayleigh phase velocities provided reasonably well constrained S-wave velocity profiles. Shallow seismic refraction surveys were used to fix the velocities of the surface layers during the inversion. The area is characterized by a thin surface layer of sandstones ({approx}60 m), followed by a {approx}500 m thick basalt layer. Beneath the basalts, low-velocity layers define another sedimentary sequence. These features are consistent with the expected values based on well data at regional distances and confirm the usefulness of high-frequency receiver functions to study sedimentary basins. (author)

  18. (Dahomey) Basin

    African Journals Online (AJOL)

    Timothy Ademakinwa

    13 km maximum width in the onshore at the basin axis along Nigerian and Republic of Benin boundary. This narrows westwards and eastwards to about 5 km (Coker and Ejedawe, 1987; Coker,. 2002). Detailed geology, evolution, stratigraphy and hydrocarbon occurrence of the basin have been described by Jones and ...

  19. Soil gamma ray spectrometry of the Buquira river basin, SP, Brazil; Gamametria de solos da bacia do rio Buquira, SP, Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Rivera, Alice

    2002-12-01

    Natural radioactivity found in rocks and its evaluation been frequently used for studies of environmental geochemistry, particularly those of detection and control of pollutants and the consequent changes in environment after antropic interferences. In this work natural radioactivity in forty nine soil samples in the basin of Buquira river, at the Northeast region of Sao Paulo State, has been analysed and measured with a Ge-HP gamma ray spectrometer. A table with the most relevant results found in rocks is shown and discussed. (author)

  20. Low prevalence of hepatitis B virus, hepatitis D virus and hepatitis C virus among patients with human immunodeficiency virus or acquired immunodeficiency syndrome in the Brazilian Amazon basin Baixa prevalência do vírus da hepatite B, vírus da hepatite D e vírus da hepatite C entre pacientes com o vírus da imunodeficiência humana ou síndrome da imunodeficiência adquirida na Amazônia Brasileira

    Directory of Open Access Journals (Sweden)

    Wornei Silva Miranda Braga

    2006-12-01

    Full Text Available Comorbidities in human immunodeficiency virus infection are of great interest due to their association with unfavorable outcomes and failure of antiretroviral therapy. This study evaluated the prevalence of coinfection by human immunodeficiency virus and viral hepatitis in an endemic area for hepatitis B in the Western Amazon basin. Serological markers for hepatitis B virus, hepatitis C virus and hepatitis D virus were tested in a consecutive sample of all patients referred for treatment of human immunodeficiency virus or acquired immunodeficiency syndrome. The variables sex, age, origin and exposure category were obtained from medical records and from the sexually transmitted diseases and acquired immunodeficiency syndrome surveillance database. Among 704 subjects, the prevalence of chronic hepatitis B carriage was 6.4% and past infection 40.2%. The presence of hepatitis B was associated with birth in hyperendemic areas of the Amazon basin, male sex and illegal drug use. The overall prevalence of hepatitis C was 5% and was associated with illegal drug use. The prevalence of hepatitis B and C among human immunodeficiency virus or acquired immunodeficiency syndrome patients in the Western Amazon basin was lower than seen elsewhere and is probably associated with the local epidemiology of these viruses and the degree of overlap of their shared risk factors. An opportunity presents itself to evaluate the prevention of hepatitis C through harm reduction policies and hepatitis B through vaccination programs among human immunodeficiency virus or acquired immunodeficiency syndrome patients.Co-morbidades na infecção pelo vírus da imunodeficiência humana são de grande interesse devido à associação com desfechos desfavoráveis e falhas na terapia anti-retroviral. Este estudo avalia a prevalência de co-infecção entre o vírus da imunodeficiência humana e hepatites virais, em uma área endêmica de hepatite B, na Amazônia Ocidental. Marcadores

  1. Petroleum generation: 3D modeling of Cumuruxatiba Basin, Brazil; Modelagem 3D da geracao de petroleo na Bacia de Curumuxatiba, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Lemgruber, Adriana; Ferreira, Daniella A.; Goncalves, Felix T.T. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Lab. de Modelagem Multidisciplinar de Bacias Sedimentares (LAB2M); Vieira, Juliana R. [Agencia Nacional do Petroleo, Gas Natural e Biocombustiveis (ANP), Rio de Janeiro, RJ (Brazil)

    2008-07-01

    In order to update and improve the knowledge of the tectonic-sedimentary evolution of Cumuruxatiba's petroleum systems, and also to call the attention of the petroleum companies, the National Agency of Oil, Gas and Biofuels (ANP) signed contract with COPPE / UFRJ for carrying out an extensive project of basin analysis. This paper presents the results of the integration geochemical data and three-dimensional maturation and petroleum generation modeling, on a regional scale. The results present an important progress in understanding the dynamic of the petroleum system in the area, and may be used as a basis for more consistent evaluation of the oil and gas potential and also of the exploitation risk at Cumuraxatiba basin. Three potential source rock intervals were simulated in the 3D model. Two intervals have been defined in the pre-salt zone, at the upper and basal portions of the rift section, and an interval at the post-salt section, at the top of Regencia formation/ basis of Urucutuca formation. The results point out that there is a significant oil and gas potential in deep-water regions and in the south portion of the continental shelf. (author)

  2. Characterization, analysis and dating of archaeological ceramics from the Amazon basin through nuclear techniques; Caracterizacao, analise e datacao de ceramicas arqueologicas da Bacia Amazonica atraves de tecnicas nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Latini, Rose Mary

    1998-07-01

    The aim of this work is to contribute to the research in the reconstruction of part of the pre-history of the Amazon Basin by means of an analytical methods combined with multivariate analysis, given a analytic basis that can be continued by the archaeological work, through the identification, classification, provenance and dating the ceramics found in different archaeological sites of the Hydro graphic Basin of the Purus river. Neutron activation analysis in conjunction multivariate statistical methods were used for the identification and classification and thermoluminescence was used for the dating. Chemical composition results were in better agreement with archaeological classification for the archaeologically define Iquiri, Quinan and Xapuri phases and less characteristics the Iaco and Jacuru archaeological phase were not well characterized. An homogeneous group was established by most of the samples collected from the Los Angeles Archaeological Site (LA) and was distinct from all the other groups analysed. The provenance studies made with ceramics collected at this site shows that they were made with clay from nearby river (Rio Ina). From the LA ceramics dating the average date of site occupation was 1660 years. The ceramic dating results from the external wall of a circular earth wall construction confirm the relation with the local pre-history. Beyond the Acre material two urns were dated from the Archaeological Site Morro Grande and Sao Jose at Araruama, Rio de Janeiro. (author)

  3. O Comitê da Bacia Hidrográfica do Rio São Francisco e a Gestão das Águas: O Conflito Exposto a Partir da Transposição do Rio São Francisco | The São Francisco River Basin Committee and Water Management Conflict Arising from the Transposition of The River

    Directory of Open Access Journals (Sweden)

    Ana Paula Novais Pires

    2014-05-01

    Full Text Available Normal 0 21 false false false PT-BR X-NONE X-NONE Introduction: The São Francisco River Basin Committee (CBHSF was set up by presidential decree in 2001 with the aim of achieving decentralized and participatory management of its water. The São Francisco River flows overland for 2700 km from its source in the Serra da Canastra (MG to its mouth between Sergipe (SE and Alagoas (AL. The river passes through the states of Bahia (BA, Pernambuco (PE, Goiás (GO and the Federal District (DF. Central to the discussion in this research on the transposition of the São Francisco River is question of conflict concerning water management in the São Francisco River Basin Committee, making a nonsense of its power to function, contrary to the project, and the Federal Government which initiated the work and approved the budget. Hence, this study aims to analyze water management in the São Francisco river basin from the initiation of the CBHSF in order to understand how approval of the project and implementation of the work ran against the statutory representation of the committee. Methodology and Development: Having a qualitative approach, the study will be divided between theoretical research based on authors who study the topic of water and its transformation into a water resource and the major landowners of the north-east semi-arid zone in the context of transposition; the dynamics and politics of the river basin; as well as the role of the river basin committees in the process of decentralizing Brazilian water management, specifically concerning the São Francisco River and its state and interstate committees. Documentary research will take into account National Water Resources Law 9.433/1997; state water policies; documentary archives of the river basin committees (state and interstate, as well as the agencies participating in the integration project, such as the National Water Agency (ANA, the Integration Ministry (MI, and the Environment Ministry (MMA

  4. Seven new species of Lachesilla (Psocodea: 'Psocoptera': Lachesillidae, in the group forcepeta from the Amazon Basin Sete espécies novas de Lachesilla Westwood (Psocodea:'Psocoptera': Lachesillidae do grupo forcepeta da Bacia Amazônica

    Directory of Open Access Journals (Sweden)

    Alfonso N. García Aldrete

    2010-12-01

    Full Text Available Seven new species of Lachesilla in the group forcepeta, from the Amazon Basin in Brazil, Colombia and Peru, are here described and illustrated: L. amacayacuensis sp. n. (type locality: Colombia, Amazonas, Leticia, Amacayacú; L.bulbosiforceps sp. n. (type locality: Peru, Cuzco; L. cuzcoensis sp. n. (type locality: Peru, Cuzco; L. marabaensis sp. n. (type locality: Brasil, Pará, Marabá, Serra Norte; L. pilosiforceps sp. n. (type locality: Brasil, Pará, Oriximiná, Rio Trombetas; L. pilosipenna sp. n. (type locality: Peru, Cuzco; L. squamiforceps sp. n. (type locality: Colombia, Amazonas, Leticia. The Amazon Basin is the second most rich world area for species of Lachesilla.São descritas e ilustradas sete espécies de Lachesilla do grupo forcepeta, provenientes da bacia amazônica do Brasil, Colômbia e Peru: L. amacayacuensis sp. n. (localidade-tipo: Colômbia, Amazonas, Leticia, Amacayacú; L. bulbosiforceps sp. n. (localidade-tipo: Peru, Cuzco; L. cuzcoensis sp. n. (localidade-tipo: Peru, Cuzco; L. marabaensis sp. n. (localidade-tipo: Brasil, Pará, Marabá, Serra Norte; L. pilosiforceps sp. n. (localidade-tipo: Brasil, Pará, Oriximiná, Rio Trombetas; L. pilosipenna sp. n. (localidade-tipo: Peru, Cuzco; L. squamiforceps sp. n. (localidade-tipo: Colômbia, Amazonas, Letícia. A região amazônica é a segunda mais rica em número de espécies de Lachesilla.

  5. Dieta de Bryconamericus iheringii (Ostariophysi: Characidae em riachos da bacia do rio Tibagi, Estado do Paraná =Diet of Bryconamericus iheringii (Ostariophysi: Characidae from streams of Tibagi river basin, Parana State

    Directory of Open Access Journals (Sweden)

    Maria Carolina Gomiero Oricolli

    2006-01-01

    Full Text Available Exemplares de Bryconamericus iheringii (Boulenger, 1887 coletados nos riachos Cambé, Taquari, Água da Floresta e Baroré, localizados na bacia do rio Tibagi, Estado do Paraná, foram analisados para verificar sua dieta. As coletas foram padronizadas em todos os riachos. Os conteúdos estomacais foram analisados qualitativa e quantitativamente. Verificou-se que a dieta de B. iheringii nos quatro riachos consistiu de itens alimentares que variaram em número, e os de maior importância foram: restos vegetais e detrito, no Cambé;detrito, no Taquari; algas filamentosas e restos vegetais, no Água da Floresta; detrito e restos de insetos, no Baroré. O comportamento de mudar de estratégia, de generalista para especialista, e de utilizar o item detrito, que é capturado apenas no fundo, como principalalimento, podem ser indicadores que trechos de riachos com águas mais lentas e profundas não são preferenciais para B. iheringii, como também não são para alguns grupos de insetos aquáticos que servem como seu alimento. Individuals of Bryconamericus iheringii (Boulenger, 1887, collected in the streams of Cambé, Taquari, Água da Floresta and Baroré, which belong to the Tibagi river basin (Parana Sate, Brazil, were analyzed for the purpose of diet study. The collection procedures were standardized in every stream. The stomach contents of the individuals were analyzed qualitative and quantitatively. The food items consumed by the species varied in number, and the main food item consumed differed in each stream. Thus, it was found: vegetable remains and debris, in Cambé; debris, in Taquari; filamentous algae and vegetable remains, in the Água da Floresta; and debris and remains of insects, in Baroré stream. The behavior shift from generalist to specialist strategy as well as the use of detritus as the main food, which can only be found in the river bottom, can indicate that stretches of streams with slower and deeper waters are not preferred

  6. Análise Morfométrica da Rede de Drenagem da Bacia do Rio do Machado-MG / Morphometric Analisys of Machado Drainage Basin – Minas Gerais State

    Directory of Open Access Journals (Sweden)

    Marli Carina Siqueira Ribeiro

    2010-04-01

    Full Text Available Este artigo visa analisar a rede de drenagem através da utilização das técnicas de indice Relação Declividade e Extensão do Curso de agua (RDE e análise do perfil longitudinal dos vales, numa região chave do Planalto Sul de Minas, a fim de contribuir com estudos sobre evolução da paisagem da região sudeste do Brasil. A pesquisa foi realizada na Bacia Hidrográfica do Rio do Machado (MG, afluente do Alto Rio Grande, e regiões adjacentes, localizadas no Planalto Sul de Minas. O Rio do Machado apresenta uma particularidade em seu curso, com uma mudança brusca de direção tomada por sua drenagem na área próxima ao seu médio curso. Com a aplicação das técnicas pretende-se compreender melhor a dinâmica do relevo na área, identificando áreas com indício de ação neotectônica e seu padrão de distribuição na bacia.

  7. Application of organic facies in sedimentological-stratigraphical model of the Oligo-Miocene and Miocene of the Campos Basin; Aplicacao da faciologia organica no modelo sedimentologico-estratigrafico do Oligo-Mioceno e Mioceno da Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Mendonca Filho, Joao Graciano; Mendonca, Joalice de Oliveira; Oliveira, Antonio Donizeti de; Torres, Jaqueline [Universidade Federal do Rio de Janeiro (UFRJ). Centro de Ciencias Exatas e da Natureza. Inst. de Geociencias (Brazil)], e-mails: graciano@geologia.ufrj.br, donizeti@lafo.geologia.ufrj.br, joalice@lafo.geologia.ufrj.br, jaqueline@lafo.geologia.ufrj.br; Menezes, Taissa Rego [Centro de Pesquisas da Petrobras (CENPES), RJ (Brazil). P e D em Geociencias. Gerencia de Geoquimica], e-mail: taissamenezes@petrobras.com.br; Santos, Viviane Sampaio Santiago dos; Arienti, Luci Maria [Centro de Pesquisas da Petrobras (CENPES), RJ (Brazil). P e D em Geociencias. Gerencia de Sedimentologia e Estratigrafia], e-mails: vsss@petrobras.com.br, arienti@petrobras.com.br

    2010-05-15

    This study integrates palynofacies analyses and the sedimentological and stratigraphic model of the Oligo-Miocene/Miocene siliciclastic deposits from the stratigraphic interval of the shallow continental platform up to the slope/basin of the Oligo-Miocene/ Miocene of the Campos Basin proposed. The main objective of the palynofacies study was to characterize the particulate sedimentary organic matter to obtain information about the proximal-distal relationship and the sedimentary organic matter preservation and depositional environmental conditions. The 158 core samples collected in 29 wells of the 9 oil production fields (Albacora, Barracuda, Marlim Sul, Marlim, Voador, Marlim Leste, Moreia and Albacora Leste), were studied. This technique provides information about the proximal-distal relationship and the paleoenvironmental conditions of deposition and preservation of sedimentary organic matter, to facilitate the evaluation and comparisons between the associations of particulate organic components. Thus, the palynofacies technique can be used as another tool in the characterization of depositional systems, based on the spatial and temporal distribution of sedimentary intervals. In general the palynofacies assemblages showed the predominance of the Phytoclast Group (terrestrial derived organic matter) at various degradation stages due to the selective preservation process diagnosed in the studied samples. Some samples, revealed high dinocysts percentages indicative of transgressive depositional conditions. From the obtained data, it was possible to characterize the stratigraphic sequences according to the distribution of particulate organic content (e.g. influence of fluvio-deltaic systems, oxygen system, regressive-transgressive tendencies of each sequence). Additional analyses of Total Organic Carbon (% wt) showed the control of the particulate components from the Phytoclast Group on the TOC (% wt) content, suggesting that the relative sea-level variation curves

  8. Calliphoridae (Diptera da bacia do alto rio Urucu, Amazônia Central, Brasil Studies of Calliphoridae (Diptera, of the rio Urucu basin, Central Amazônia

    Directory of Open Access Journals (Sweden)

    Norival D Paraluppi

    1996-01-01

    Full Text Available Calliphoridae of the region of the upper Urucu river basin, West of the city of Manaus, Amazonas State, Brazil, were sludied considering composition and abundance of the species, capturing 14729 specimen distributcd as follows: Cochliomyia macellaria (Fabricius (12643, Chloroprocta idioidea (Robineau-Desvoidy (1667, Phaenicia eximia (Wiedemann (354, Hemilucilia semidiaphana (Rondani (54, H. segmentaria (Fabricius (6, Chrysomya pularia (Wiedemann (1 e C. albiceps (Wiedemann (1. The rcsults showthat Cochliomyia macellaria has a facility to adapt rapidly to an environment changed by man. The fact that was registered two specimen of Chrysomya Robineau-Desvoidy in highly isolated localilies contributed to showthc ability of thesc flics in cxploring the availablc mechanisms to reach remote places, re-einphasizing the concept of high capacily of expansion ofthis species. The possibilities of colonization ofthis área by pioneer species of Chrysomya was discus-sed, considering the local environmental conditions. The importance of studies of endemic calliphorids (lies in áreas withoul prescnce of pioncers, in order to better understand the mechanisms of adaptation used by these species were striked.

  9. Evidences of uplands during the Campanian time, Espirito Santo Basin; Evidencias de terras altas no Campaniano da Bacia do Espirito Santo

    Energy Technology Data Exchange (ETDEWEB)

    Maizatto, Jose Ricardo; Lana, Cecilia Cunha; Ribeiro, Andrea Wallau Souto; Ferreira, Elizabete Pedrao [PETROBRAS S.A. (CENPES/PETROBRAS), Rio de Janeiro, RJ (Brazil). Centro de Pesquisas e Desenvolvimento Leopoldo A. Miguez de Mello. P e D.], Emails: maizatto@petrobras.com.br, lana@petrobras.com.br, andreawsr@petrobras.com.br, elizabete@petrobras.com.br

    2008-11-15

    The palynological analysis carried out in four wells in the Espirito Santo Basin has revealed an expressive abundance of Callialasporites sp. cf. Perotrilites sp. sensu Herngreen (1975) pollen grains, during the Campanian-Maastrichtian interval and, especially, in the middle Campanian. The high abundance of this species was related to the paleoflora adaptation to the favorable paleoecological conditions. The Callialasporites genus belongs to the Podocarpaceae family (gymnosperm), which, nowadays, occurs mainly in upland areas. Therefore, it is possible to relate the high abundance of this species to the development of podocarpacean paleoflora in uplands during the middle Campanian. The apatite fission tracks analysis (AFTA) data was developed in the project entitled 'Tectonic Evolution and Thermal History of the Southeast Brazilian and West African Margins' (UFRGS/UNICAMP/PETROBRAS). According to AFTA data of the Espirito Santo state coastal region, an important tectonic event occurred, causing an uplift process with a posterior denudation of the area during the Campanian (80 Ma). This data correlates with the proposed palynological interpretation to explain the abundance of Callialasporites sp. cf. Perotrilites sp. sensu Herngreen (1975). This event would be associated with the creation of uplands that favored the development of podocarpacean paleoflora adapted to mountainous paleoecological conditions. (author)

  10. Modelagem Sísmica via métodos das diferenças finitas: caso da bacia do Amazonas Seismic Modeling by finites difference method: case of Amazon basin

    Directory of Open Access Journals (Sweden)

    Lindemberg Lima Fernandes

    2009-03-01

    Full Text Available Este trabalho tem por objetivo apresentar os resultados da modelagem sísmica em meios com fortes descontinuidades de propriedades físicas, com ênfase na existência de difrações e múltiplas reflexões, tendo a Bacia do Amazonas como referência à modelagem. As condições de estabilidade e de fronteiras utilizadas no cálculo do campo de ondas sísmicas foram analisadas numericamente pelo método das diferenças finitas, visando melhor compreensão e controle da interpretação de dados sísmicos. A geologia da Bacia do Amazonas é constituída por rochas sedimentares depositadas desde o Ordoviciano até o Recente que atingem espessuras da ordem de 5 km. Os corpos de diabásio, presentes entre os sedimentos paleozóicos, estão dispostos na forma de soleiras, alcançam espessuras de centenas de metros e perfazem um volume total de aproximadamente 90000 Km³. A ocorrência de tais estruturas é responsável pela existência de reflexões múltiplas durante a propagação da onda sísmica o que impossibilita melhor interpretação dos horizontes refletores que se encontram abaixo destas soleiras. Para representar situações geológicas desse tipo foram usados um modelo (sintético acústico de velocidades e um código computacional elaborado via método das diferenças finitas com aproximação de quarta ordem no espaço e no tempo da equação da onda. A aplicação dos métodos de diferenças finitas para o estudo de propagação de ondas sísmicas melhorou a compreensão sobre a propagação em meios onde existem heterogeneidades significativas, tendo como resultado boa resolução na interpretação dos eventos de reflexão sísmica em áreas de interesse. Como resultado dos experimentos numéricos realizados em meio de geologia complexa, foi observada a influência significativa das reflexões múltiplas devido à camada de alta velocidade, isto provocou maior perda de energia e dificultou a interpretação dos alvos. Por esta raz

  11. Risk Analysis of Reservoir Operations Considering Short-Term Flood Control and Long-Term Water Supply: A Case Study for the Da-Han Creek Basin in Taiwan

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    Wen-Ming Cheng

    2017-06-01

    Full Text Available This study applies an integrated methodology to assess short-term over-levee risk and long-term water shortage risk in the Da-Han Creek basin, which is the most important flood control and water storage system in northern Taiwan. An optimization model for reservoir flood control and water supply is adopted, to determine reservoir releases based on synthetic inflow hydrographs during typhoons, which are generated by Monte Carlo simulations. The release is then used to calculate the water level at a downstream control point using a novel developed back-propagation neural network-based model, to reduce computational complexity and achieve automatic-efficient risk evaluation. The calculated downstream water levels and final reservoir water levels after a typhoon event are used to evaluate the mapped over-levee risk and water shortage risk, respectively. The results showed that the different upper limit settings for the reservoir have a significant influence on the variation of 1.19 × 10−5% to 75.6% of the water shortage risk. This occurs because of the insufficient inflow and narrow storage capacity of the Shih-Men Reservoir during drought periods. However, the upper limit settings have a minor influence (with a variation of only 0.149% to 0.157% on the over-levee risk in typhoon periods, because of the high protection standards for the downstream embankment.

  12. A description of mercury in fishes from the Madeira River Basin, Amazon, Brazil Um estudo descritivo do mercúrio em peixes da bacia do Rio Madeira, Amazônia, Brasil

    Directory of Open Access Journals (Sweden)

    Wanderley Rodrigues Bastos

    2008-01-01

    Full Text Available Over the last 20 years several projects carried on the Madeira River basin in the Amazon produced a great amount data on total Hg concentration in different fish species. In this paper we discuss temporal trends in Hg contamination and its relation to body weight in some of those fishes, showing that even within similar groups, such as carnivorous and non-migratory fish, the interspecies variability in Hg accumulation is considerable.Vários estudos têm sido desenvolvidos nos últimos 20 anos na bacia do Rio Madeira (Amazônia com o objetivo de diagnosticar a presença de mercúrio em peixes e compreender o ciclo deste elemento no meio ambiente tropical. Neste artigo são discutidas tendências temporais na concentração de Hg e sua relação com a massa corporal de algumas espécies de peixes com diferentes hábitos alimentares, coletadas no Rio Madeira e no reservatório da hidroelétrica de Samuel, no Rio Jamari, Estado de Rondônia. Foi avaliada uma amostragem de peixes de 14 anos (1987 - 2000 com 86 espécies e um total de 1100 espécimes.

  13. Flora arbórea da bacia do rio Tibagi (Paraná, Brasil: Celastrales sensu Cronquist Tree flora of the Tibagi river basin (Paraná, Brazil: Celastrales sensu Cronquist

    Directory of Open Access Journals (Sweden)

    Ricardo Augusto Gorne Viani

    2007-06-01

    Full Text Available Este trabalho estudou, por meio de coleções de herbários, os representantes arbóreos da ordem Celastrales sensu Cronquist, encontrados na bacia do rio Tibagi, estado do Paraná, Brasil. Esta bacia hidrográfica, subdividida em três zonas de norte para sul, baixo Tibagi (BT, médio Tibagi (MT e alto Tibagi (AT, apresenta diferentes condições ambientais e tipos de vegetação ao longo de sua extensão. A ordem Celastrales está representada na bacia estudada por 15 espécies arbóreas, pertencentes às famílias Aquifoliaceae, Celastraceae e Icacinaceae. Icacinaceae conta com apenas duas espécies, Citronella gongonha e C. paniculata, sendo a primeira distinta pelo ovário glabro e folhas geralmente com espinhos. Aquifoliaceae contém seis espécies: Ilex brasiliensis, I. brevicuspis, I. chamaedryfolia, I. dumosa, I. paraguariensis e I. theezans, que ocorrem preferencialmente no AT e MT e se distinguem pela dimensão, revestimento, ápice e margem da folha e pela morfologia das sépalas. Celastraceae está representada por sete espécies pertencentes a dois gêneros, Plenckia populnea, espécie de cerrado, encontrada apenas no MT e seis espécies de Maytenus (M. aquifolia, M. dasyclada, M. evonymoides, M. ilicifolia, M. robusta e M. salicifolia, com distinção baseada principalmente no tipo de margem e dimensão das folhas, forma do ramo e número de flores por inflorescência.A study of the tree species of the order Celastrales sensu Cronquist from the Tibagi river basin, Paraná state, Brazil, is presented, based on herbarium material. This basin is subdivided into three zones, from north to south: lower Tibagi (BT, mid Tibagi (MT and upper Tibagi (AT, each with different environmental conditions and vegetation types. The order Celastrales is represented in the basin by 15 tree species belonging to three families: Aquifoliaceae, Celastraceae and Icacinaceae. Icacinaceae has only two species, Citronella gongonha and C. paniculata. The

  14. Geostatistical and stratigraphic analysis of deltaic reservoirs from the Reconcavo Basin, Brazil; Analise estratigrafica e geoestatistica de reservatorios deltaicos da Bacia do Reconcavo (BA)

    Energy Technology Data Exchange (ETDEWEB)

    Soares, Carlos Moreira

    1997-07-01

    This study presents the characterization of the external geometry of deltaic oil reservoirs, including the description of their areal distribution using geo statistic tools, such as variography and kriging. A high-resolution stratigraphic study was developed over a 25 km{sup 2} area, by using data from 276 closely-spaced wells of an oil-producer field from the Reconcavo Basin, northeastern Brazil. The studied succession records the progressive lacustrine transgression of a deltaic environment. Core data and stratigraphic cross sections suggest that the oil reservoirs are mostly amalgamated, delta-front lobes, and subordinately, crevasse deposits. Some important geometrical elements were recognized by the detailed variographic analysis developed for each stratigraphic unit (zone). The average width for the groups of deltaic lobes of one zone was measured from the variographic feature informally named as hole effect. This procedure was not possible for the other zones due to the intense lateral amalgamation of sandstones, indicated by many variographic nested structures. Net sand krigged maps for the main zones suggest a NNW-SSE orientation for the deltaic lobes, as also their common amalgamation and compensation arrangements. High-resolution stratigraphic analyses should include a more regional characterization of the depositional system that comprises the studied succession. On the other hand, geostatistical studies should be developed only after the recognition of the depositional processes acting in the study area and the geological meaning of the variable to be treated, including its spatial variability scales as a function of sand body thickness, orientation and amalgamation. (author)

  15. Impacts of production of hydrocarbons in Campos Basin: missing or not detected; Impactos da producao de hidrocarbonetos na Bacia de Campos: ausentes ou nao detectados

    Energy Technology Data Exchange (ETDEWEB)

    Alves, Carolina E. [Instituto Brasileiro de Meio Ambiente e Recursos Naturais Renovaveis (CGPEG/DILIC/IBAMA), Rio de Janeiro, RJ (Brazil). Coordenacao Geral de Petroleo e Gas. Diretoria de Licenciamento; Gama, Bernardo A. Perez da [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil)

    2012-07-01

    According to the Brazilian legislation, the Environmental Impacts Monitoring Plan is one of the requirements of the environmental licensing to offshore oil and gas production activities. The Monitoring Plan's structure is based upon sampling and evaluation of numerous parameter settings in water and sediment compartments, while the conclusion as to the existence or absence of impact is obtained after statistical analysis of the results. The aim of this work was to evaluate the methodological adequacy of monitoring and to calculate the statistical power of tests applied with the purpose to determine the reliability of their findings. Experiences in other countries like Australia have shown that this is an important instrument in preparing an effective environmental study regarding the detection of impacts. In Brazil, this is the first initiative to critically evaluate the results of reports of environmental monitoring originated from the licensing of hydrocarbons production activities. Campaign reports forwarded to the environmental agency in charge, i.e., the Brazilian Institute of Environment and Renewable Natural Resources (IBAMA), and the selected ventures are located in the Campos Basin and have different operating companies. The results were both relevant and concerning. All monitoring reports confirmed the absence of alterations or impacts on the biotic media for sediment compartments, but the greater statistical power did not exceed 25% for a great magnitude impact. Thus it was concluded that if the oil production activity has caused alterations or impacts to bentonic organisms, the carried out monitoring was inefficient to detect them even if they were of great magnitude. This analysis is expected to be an instrument for future changes in environmental licensing procedures e for the improvement of the environmental public management in Brazil. (author)

  16. Cladocerans from gut contents of fishes associated to macrophytes from Taquari River Basin, MS, Brazil Cladóceros do conteúdo estomacal de peixes associados a macrófitas da Bacia do Rio Taquari, MS, Brasil

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    Adriana Maria Güntzel

    2012-03-01

    Full Text Available AIM: The aim of this study was to identify the cladocerans species from the gut contents of fishes sampled in an oxbow lake from Taquari River Basin, MS, with the specific view of investigating the importance of these crustaceans in the fishes diets; METHODS: Sampling was carried out in April and August of 2005 (dry season and January of 2006 (wet season. The fish were captured with a sieve. In the laboratory, individuals were identified and stomachs were removed and weighed. The stomach contents were identified, and a Feeding Index calculated; RESULTS: The items most consumed by fishes were filamentous algae, Cladocera and detritus. The Cladocera were especially important in the August and January samples, and consisted primarily of Chydoridae; cladocerans were most consumed by species of Serrapinnus and by Mesonauta festivus. Fish fed more in April, with decreases occurring in stomach fullness on the other two sampling dates. CONCLUSIONS: Cladocerans associated with macrophytes may be an important food source for small fish individuals in marginal lakes from Taquari River Basin. The relative importance of the Chydoridae in the guts may have been due to the high relative abundance and species richness of this group in the environment. A short discussion on fish feeding habits was included in the text.OBJETIVO: Este estudo teve por objetivo identificar as espécies de cladóceros presentes no conteúdo estomacal de peixes amostrados em uma lagoa marginal da Bacia do Rio Taquari, MS, visando avaliar a importância destes crustáceos na dieta dos peixes; MÉTODOS: A amostragem foi realizada em abril e agosto de 2005 (estação seca e janeiro de 2006 (estação chuvosa. Os peixes foram capturados com um peneirão. Em laboratório, os indivíduos foram identificados até o nível de espécie e os estômagos removidos e pesados. O conteúdo estomacal foi identificado e um Índice Alimentar calculado. RESULTADOS: Os itens mais consumidos pelos peixes

  17. Environment sensitivity map to North Pelotas Basin: subsidy to elaboration of contingency plans; Mapeamento da sensibilidade ambiental para a porcao norte da Bacia de Pelotas: subsidio para elaboracao de planos de contingencia

    Energy Technology Data Exchange (ETDEWEB)

    Diniz, Debora P.; Griep, Gilberto H. [Fundacao Universidade do Rio Grande (FURG), RS (Brazil)

    2008-07-01

    The Pelotas Basin stands out in the national scenery of search of petroleum and gas. Due of these interests they become important environmental protection actions. Inside of this panorama is the Chart of Sensitivity Index (CSI). The study was developing in Santa Catarina, municipal districts from Passo de Torres to Palhoca. The objectives of this work were the development of the CSI and the construction of a bibliographical database. The methodology used in this work was proposed by the Ministerio do Meio Ambiente. During the field exit sediment samples, photographic registration and pertinent observation were collected. With all this information the Index of Environment Sensitivity (IES) was generated, that classifies the coasts in agreements with the sensitivity to the oil. Diversity of environments is very clear at this coast for the variability of the IES. The most frequent ecosystem is beaches of medium to fine sand exposed. It was identified the presence of environments of highly sensitive, classified in the index 8 and 10. The definition of possible scarification areas was accomplishments with IES, biological resources and economical partner of the area. (author)

  18. Production and injectivity loss forecasting in the Campos Basin due to sulphate scaling; Previsao da perda da produtividade e de injetividade na Bacia de Campos devido a incrustacao de sulfatos

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Raphael Monteiro Pereira da [PETROBRAS, Rio de Janeiro, RJ (Brazil). Unidade de Negocios de Exploracao e Producao do Rio de Janeiro. Gerencia de Reservatorios], e-mail: raphael.monteiro@petrobras.com.br; Bedrikovetsky, Pavel G. [Universidade de Adelaide (Australia). Inst. Australiano de Petroleo], e-mail: pavel.russia@gmail.com

    2007-12-15

    Sulphate scaling is a serious problem for water flood in Campos Basin fields. This phenomenon results in the scaling up of the producers for seawater flood and a decline in injectivity during commingled co-injection of produced and seawater. This work has devised a analytical-model-based method to determine a kinetics coefficient from laboratory core flood, production well neighbourhood and injection well neighbourhood. The kinetic values and formation damage coefficients presented in this work have been calculated from twenty-three laboratory and twenty-two producer well data. The results obtained vary in the same range intervals. They validate the proposed mathematical model, allowing the application of the coefficients in reservoir simulations. Based on the production history of the wells of the Marlim and Namorado fields, the productivity index decline has been predicted by using the production well neighbourhood model. The well injection model permits the maximum safe concentration of sulphate in the desulphated seawater to be determined, with the result that the injectivity damage has been minimized for the Marlim Sul, Marlim, Jubarte, Albacora Leste, Roncador and Marlim Leste fields. (author)

  19. Análise espacial da soroprevalência da hepatite A em crianças de uma região carente de Duque de Caxias, RJ, Brasil

    OpenAIRE

    Medronho,Roberto de Andrade; Ortiz Valencia,Luis Iván; Fortes,Bruno de Paula Menezes Drumond; Braga,Ricardo Cerqueira Campos; Ribeiro,Simone do Valle

    2003-01-01

    Os autores estimaram áreas de risco para hepatite A em quatro setores censitários de Duque de Caxias, Rio de Janeiro, área de intervenção ambiental do Programa de Despoluição da Baía de Guanabara, a partir de um inquérito de soroprevalência para hepatite A em crianças residentes nesta localidade. A amostra consistiu de 454 crianças com idade entre 1 e 9 anos, selecionadas através de amostra aleatória simples em cada grupo etário. Foram coletadas alíquotas de sangue para detecção de anticorpos...

  20. Caracterização da água da microbacia do córrego rico avaliada pelo índice de qualidade de água e de estado trófico Water quality of rico stream micro-basin evalueted by water quality index and trophic state index

    Directory of Open Access Journals (Sweden)

    Helen L. H. T. Zanini

    2010-08-01

    Full Text Available A avaliação do índice de qualidade da água (IQA e do índice de estado trófico médio (IETm pode subsidiar a formulação de planos de manejo e gestão de sistemas aquáticos. Neste trabalho, foi avaliada a qualidade da água da microbacia do Córrego Rico, que abastece a cidade de Jaboticabal (SP, utilizando o IQA e IETm. As amostragens de água foram realizadas entre setembro-2007 e agosto-2008, em três pontos: a em uma das nascentes; b após a Estação de Tratamento de Esgoto de Monte Alto, e c na captação de água para abastecimento público de Jaboticabal. As amostras foram analisadas quanto aos parâmetros físicos, químicos e microbiológicos: temperatura, oxigênio dissolvido, pH, DBO5, nitrogênio total, fósforo total, turbidez, resíduo total, ortofosfato, clorofila-a e Escherichia coli. De acordo com os resultados obtidos, concluiu-se que: a as atividades antrópicas às margens do Córrego Rico reduzem a qualidade de sua água, durante os diferentes períodos do ano; b os valores médios de IQA nos três pontos analisados apresentaram relação direta com os valores médios de IETm, porém ocorreu maior discriminação da qualidade da água pelo IETm, identificando diferentes graus de trofia para os pontos e períodos de amostragens; c o IQA apresentou melhor diferenciação da qualidade da água entre pontos no período seco e o IETm diferenciou melhor no período chuvoso; d o processo de autodepuração e/ou a confluência do Córrego Tijuco com o Córrego Rico contribuem para melhor qualidade da água, tornando-a adequada ao abastecimento urbano após tratamento convencional.The evaluation of water quality index (WQI and mean trophic state index (mTSI may be useful for management and administration projects of water systems. Quality of water from the stream Rico micro-basin that supplies the town of Jaboticabal - SP, Brazil, with fresh water has been evaluated, using WQI and mTSI. Collects were undertaken between

  1. Rede neural artificial aplicada à previsão de vazão da Bacia Hidrográfica do Rio Piancó Artificial neural network applied to the forecast of streamflow in the Piancó River Basin

    Directory of Open Access Journals (Sweden)

    Wanderson dos S. Sousa

    2010-02-01

    Full Text Available A previsão de vazão em um sistema hídrico não é apenas uma das técnicas utilizadas para minimizar o impacto das incertezas do clima sobre o gerenciamento dos recursos hídricos mas, também, um dos principais desafios relacionados ao conhecimento integrado da climatologia e da hidrologia de uma bacia hidrográfica. O objetivo deste trabalho foi modelar a relação não-linear entre chuva e vazão na bacia hidrográfica do rio Piancó, no semiárido paraibano, através da técnica de Redes Neurais Artificiais (RNA. Aqui se avaliou a capacidade da RNA modelar o processo chuva-vazão em base mensal e se considerou, durante o seu treinamento, a influência da arquitetura da rede e da inicialização dos pesos. No final do treinamento foi escolhida a melhor arquitetura para modelar vazões médias mensais na bacia estudada, com base no desempenho do modelo. A arquitetura de RNA que produziu melhor resultado foi a RC315L, com valores para o coeficiente de determinação, de eficiência e erro padrão da estimativa de 92,0, 77,0% e 8,29, respectivamente.Streamflow forecasting in a water system is one of the techniques used to reduce the impact of the uncertainties of the climate on administration of the water resources. That technique can be considered as one of the principal challenges related to the integrated knowledge of the climatology and of the hydrology of the river basin. The aim of this work was to model the non-linear relationship between rainfall and streamflow in the Piancó River Basin, in the Paraíba semiarid, using the technique of Artificial Neural Networks (ANN. Here the ability of ANN was evaluated to model the rainfall-runoff process on a monthly basis. During training of the ANN, the network architecture and weights initialization influence were considered. At the end of the training the best architecture was chosen, to model the streamflow monthly mean in the studied basin, based upon the performance of the model. The ANN

  2. Bivalves límnicos da bacia do rio dos Sinos, Rio Grande do Sul, Brasil (Bivalvia, Unionoida, Veneroida e Mytiloida Limnic bivalves of the Sinos river basin, Rio Grande do Sul, Brazil (Bivalvia, Unionoida, Veneroida And Mytiloida

    Directory of Open Access Journals (Sweden)

    Maria C. D. Mansur

    2006-12-01

    Full Text Available Com base no exame de exemplares de moluscos bivalves depositados em várias coleções científicas locais e internacionais, procedentes da bacia do rio dos Sinos, estado do Rio Grande do Sul, Brasil, apresentou-se uma revisão taxomica com diagnoses e chave dicotômica. Registram-se dez espécies de Hyriidae, dez de Mycetopodidae, três de Corbiculidae - duas exóticas: Corbicula largillierti (Philippi, 1844 e C. fluminea (Müller, 1774 -, três de Sphaeriidae e uma exótica de Mytilidae, Limnoperna fortunei (Dunker 1857. Restringiu-se a localidade tipo de Anodontites iheringi (Clessin, 1882 ao rio Paranhana, no município de Igrejinha (29º36'S e 50º50'W. As espécies foram distribuidas de acordo com as diferentes zonas do rio (superior, média e inferior.Ten species of Hyriidae, ten of Mycetopodidae, three of Corbiculidae - two exotic: Corbicula largillierti (Philippi, 1844 and C. fluminea (Müller, 1774 -, three Sphaeriidae and one exotic Mytilidae, Limnoperna fortunei (Dunker, 1857, were taxonomically revised with diagnosis and identification key for the Sinos River Basin, State of Rio Grande do Sul, Brazil. Voucher specimens of several scientific collections were examined. The type locality of Anodontites iheringi (Clessin, 1882 is presently restricted to Paranhana River, Municipality of Igrejinha (29º36'S and 50º50'W. Species distribution according to the river zones (high, middle and low is presented.

  3. Residual basins

    International Nuclear Information System (INIS)

    D'Elboux, C.V.; Paiva, I.B.

    1980-01-01

    Exploration for uranium carried out over a major portion of the Rio Grande do Sul Shield has revealed a number of small residual basins developed along glacially eroded channels of pre-Permian age. Mineralization of uranium occurs in two distinct sedimentary units. The lower unit consists of rhythmites overlain by a sequence of black shales, siltstones and coal seams, while the upper one is dominated by sandstones of probable fluvial origin. (Author) [pt

  4. The fish fauna of Tibagi river basin and the construction project of Mauá hydroelectric plant, Paraná, Brazil A ictiofauna da bacia do rio Tibagi e o projeto de construção da UHE Mauá, Paraná, Brasil

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    Sirlei Terezinha Bennemann

    2010-10-01

    Full Text Available The middle stretch of Tibagi river basin in the State of Paraná, where the hydroelectric plant of Mauá is planned to be constructed, was considered by the Ministério do Meio Ambiente (MMA as an area of priority for conservation. The environmental impacts studies for the species of fish were considered incomplete, inconsistent and not valid by researchers from the Universidade Estadual de Londrina. Thus, with the purpose of verifying which species of fish occur in stretches of Tibagi river and an affluent threatened by the project, Barra Grande river, a list of species that appear on the reports (EIA/RIMA with species collected in this study and in literature, were compared. In the EIA/RIMA reports 125 fish species were registered. This study added 26 species than those recorded in the EIA, totaling 151 species, for the Tibagi river basin. Among those who did not appear in the EIA, five were collected in stretches of Tibagi river and two in Barra Grande river. The others are from current studies carried out in the middle and upper regions of Tibagi river. These results confirmed the errors presented in the EIA, emphasizing that several species can be new for science. Therefore, the studies presented in the by the CNEC S.A., and approved by Instituto Ambiental do Paraná (IAP, do not support propositions drawn to weaken the effects of the Mauá dam over the fish species that could be attained. A construção da hidrelétrica Mauá foi projetada no médio rio Tibagi, Paraná, local identificado pelo Ministério do Meio Ambiente (MMA como área prioritária para a conservação. Os estudos de impactos ambientais, para as espécies de peixes, foram considerados incompletos, inconsistentes e inválidos pelos pesquisadores da Universidade Estadual de Londrina. Assim, com o objetivo de verificar quais espécies de peixes ocorrem em trechos do rio Tibagi e em um afluente ameaçado pelo projeto, o rio Barra Grande, comparou-se a lista de espécies que

  5. Composição e configuração da paisagem da sub-bacia do arroio jacaré, Vale do Taquari, RS, com ênfase nas áreas de florestas Landscape composition and configuration of jacaré stream sub-basin, Taquari Valley, RS, with emphasis on the forest areas

    Directory of Open Access Journals (Sweden)

    Gisele Cemin

    2009-08-01

    Full Text Available A conversão de áreas com cobertura florestal contínua por fragmentos florestais vem contribuindo para a diminuição da diversidade biológica, em função da perda de micro-habitats únicos, mudanças nos padrões de dispersão e migração, isolamento de habitats e erosão do solo. A solução desses problemas está intimamente vinculada ao planejamento e manutenção de bacias hidrográficas. A sub-bacia do Arroio Jacaré, localizada no Vale do Taquari, RS, compreende uma área de 538,98 km², onde estão parcial ou totalmente inseridos nove municípios. Essa bacia se encontra em uma região de ecótono entre as formações vegetais do tipo Floresta Estacional Decidual (FED e Floresta Ombrófila Mista - Mata de Araucária (FOM. Foram elaboradas e analisadas informações relacionadas às características estruturais das classes de mata na região (FED, FOM e vegetação secundária, utilizando-se imagem do satélite Landsat 7 ETM+, referente à passagem 04/02/2002 e software de Sistemas de Informações Geográficas (SIG Idrisi, 3.2, software de Ecologia de Paisagem Fragstats 3.3. Os resultados indicaram que a região apresenta aproximadamente 50% de suas matas nativas conservadas ou em estágio de regeneração, porém de forma altamente fragmentada, com 87,82% dos fragmentos menores que 1 ha. Considerando um efeito de borda de 50 m, em torno de 40% dos fragmentos ainda apresentam área nuclear.The conversion of continuous forest coverage areas into forest fragments has contributed to the decrease of the biological diversity due to the micro-habitat loss, changes in dispersion and migration patterns, habitats' isolation and soil erosion. The solution for those problems is intimately linked to the planning and maintenance of hydrographic basins. Jacaré's stream sub-basin is located in Taquari Valley, RS, with an area of 538,98 km², where nine municipal districts are partially or totally inserted. This basin is in an ecotone area among

  6. Temporal analysis of the connectivity and potential transport capacity of sediments in semiarid meso-basin, CE, Brazil. = Análise temporal da conectividade e da capacidade de transporte potencial de sedimentos em meso-bacia semiárida, CE, Brasil.

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    José Wellington Batista Lopes

    2013-08-01

    Full Text Available The transfer of energy and matter between two topographic units comprise the connectivity process. The identification of the connectivity patterns in the catchments allow to represent the linking degree between sediment producing areas and network drainage. The aim of this study was to evaluate spatial and temporal connectivity and estimate the potential capacity of sediment transport on a meso-semiarid Basin. The study area comprises the Representative Madalena Basin (RMB with area 124 km², located at federal state from Ceara, Brazil. The assessing the connectivity was done by using the quantitative index. The determination of peak discharge was by the method NRCS (Natural Resouces Conservation Service and the transport capacity (CT, t ha-1 yr-1 was calculated by the method of Morgan (2001. The results showed that: the connectivity potential index was not linearity, but a possible spatial distribution pattern of alternating between producing and receiving areas. The use and occupation of land is determinant in the spatial variation of peak flows; transportation capacity concerns associated with potential connectivity provides best estimates of erosion in the basin; in both models used, the use and occupation of soil was crucial in the results. = A transferência de energia e matéria entre duas unidades topográficas compreende o processo deconectividade. A identificação dos padrões de conectividade em uma bacia hidrográfica permite representar o grau de ligação entre áreas produtoras de sedimentos e a rede de drenagem. Objetivou-se com esta pesquisa analisar a conectividade espaço-temporal e estimar a capacidade potencial de transporte de sedimentos em uma meso-baciasemiárida. A área foco do estudo compreende a Bacia Representativa de Madalena (BRM com área de 124 km², localizada no Estado do Ceará, Brasil. Foram avaliadas as seguintes variáveis: conectividade, o pico de descarga e a capacidade de transporte de escoamento da

  7. Integrated study on the paleocene/eocene section of the Baixo de Mosqueiro reverting the exploratory expectation for the turbidites of the Calumbi formation - Sergipe/Alagoas basin - Brazil; Estudo integrado da secao paleocenica/eocenica no Baixo de Mosqueiro reverte expectativa exploratoria para os turbiditos da Fm. Calumbi na Bacia de Sergipe/Alagoas

    Energy Technology Data Exchange (ETDEWEB)

    Mendes, Jose Milton C.; Silva, Cicero F. da; Machado, Elizabeth C.; Valverde, Ricardo S. [PETROBRAS, AL (Brazil). Exploracao e Producao

    1998-07-01

    Offshore petroleum exploration and production development in Brazil commenced in the Sergipe/Alagoas Basin with the discovery of the Guaricema Field in 1968. The Sergipe/Alagoas Basin had no significant petroleum discovery in its Late Cretaceous-Tertiary section since 1987 when the first deep-water oil discovery outside the Campos Basin occurred: the SES-92 oil pool. (author)

  8. San Mateo Creek Basin

    Science.gov (United States)

    The San Mateo Creek Basin comprises approximately 321 square miles within the Rio San Jose drainage basin in McKinley and Cibola counties, New Mexico. This basin is located within the Grants Mining District (GMD).

  9. Influence of urbanisation on water quality in the basin of the upper Uruguay River in western Santa Catarina, Brazil Influência da urbanização sobre a qualidade da água na bacia do alto Rio Uruguai no oeste de Santa Catarina, Brasil

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    Raquel Zeni Ternus

    2011-06-01

    Full Text Available AIM: The main objective of the study was to evaluate the limnological characteristics of rivers flowing through urban and rural areas in the upper Uruguay River basin in western Santa Catarina (SC, Brazil. METHODS: Sampling sites in the tributaries were selected along the longitudinal gradient and the different use of the soil in adjacent areas. Samples were collected bimonthly from March 2005 to August 2006. The following were analysed: depth, pH, electrical conductivity, dissolved oxygen concentration (DO, water temperature, chemical oxygen demand (COD, total alkalinity, ammonia, nitrite, nitrate and phosphorus were analysed. RESULTS: In most of the rivers analysed, we found a continuum from the spring to the river mouth that was characterised by a gradual increase in electrical conductivity, COD, phosphorus, alkalinity, nitrite and nitrate. However, an alteration from this pattern was found in rivers passing through urban areas. This deviation was due to high organic matter input poured into the rivers from these areas. CONCLUSIONS: Degraded riparian forest was observed along most of the bodies of water, which facilitates the entry of pollutants. Although the studied area suffers from intense farming activity (agriculture and livestock and has the highest concentration of swine livestock in the country, the rivers that were most altered from their natural state were those that were influenced by sewage and industrial effluents from urban development.OBJETIVO: O objetivo desta pesquisa foi avaliar as características limnológicas de rios que atravessam áreas rurais e urbanas na bacia do alto Rio Uruguai no oeste de Santa Catarina, Brasil. MÉTODOS: Foram selecionados pontos nos afluentes, obedecendo ao gradiente longitudinal e diferente uso do solo das áreas adjacentes. As amostragens foram bimestrais de março de 2005 a agosto de 2006. Foram analisadas as variáveis profundidade, pH, condutividade elétrica, oxigênio dissolvido (OD

  10. Sex determination in the Giant fish of Amazon Basin, Arapaima gigas (Osteoglossiformes, Arapaimatidae, using laparoscopy Determinação do sexo no peixe gigante da Bacia Amazônica, Arapaima gigas (Osteoglossiformes, Arapaimatidae, usando laparoscopia

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    Carlos Riedel Porto Carreiro

    2011-01-01

    Full Text Available The Giant of Amazon basin, pirarucu, Arapaima gigas, is the largest scaled freshwater fish in the world. pirarucu cultivation has recently started, driven by the decline in natural populations and high market value. Currently, there are no reliable methods for sexual differentiation in this species other than direct examination of gonads, which requires dissection of specimens. A non-lethal and less invasive method for sexual identification is highly desirable in order to properly group broodstock for mating and offspring production. We utilized laparoscopic examination in anesthetized pirarucu to differentiate between male and female individuals. This method allowed for the observation and differentiation of the reproductive organs within an individual. Our results suggest that laparoscopy is an efficient method for sex differentiation in pirarucu causing minimal stress to the fish.O gigante da bacia amazônica, pirarucu, Arapaima gigas, é o maior peixe de escamas de água doce do mundo. O seu cultivo teve início recentemente motivado pelo declínio de suas populações naturais em virtude do alto valor de sua carne no mercado. Não existem métodos para a diferenciação sexual nesta espécie, o único método é o exame direto das gônadas, o qual requer a dissecação do espécime. Um método para a identifica��ão sexual é altamente desejável, a fim de selecionar grupos de reprodutores para o acasalamento e, portanto, a produção de progênie. A fim de diferenciar reprodutores machos de fêmeas, foi utilizado o exame laparoscópico em animais previamente anestesiados. Este método permitiu a observação dos órgãos abdominais, incluindo gônadas, com grande precisão. Os resultados mostram que a laparoscopia é um método eficiente para a diferenciação do sexo em pirarucu e causam o mínimo de stress para os animais.

  11. Análise de aspectos socioeconômicos e tecnológicos da agropecuária na Bacia Hidrográfica do Rio Mogi Guaçu Social-economic analyse and technologic aspects of the agriculture at the Mogi Guaçu River Hydrographic Basin

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    Marianna S. Zibordi

    2006-08-01

    Full Text Available Atualmente, com a ocorrência de problemas ambientais e a necessidade de conservação e preservação, a gestão dos territórios de Bacias Hidrográficas apresenta extrema importância. O objetivo do trabalho é levantar e analisar dados socioeconômicos e tecnológicos da Bacia Hidrográfica do Rio Mogi Guaçu - SP, bem como fornecer subsídios para a gestão agropecuária, agrupando os municípios com características semelhantes para os dados levantados, o que poderá orientar ações conjuntas na gestão da Bacia Hidrográfica. Foram levantados dados primários e secundários, sendo utilizados os métodos da análise fatorial em componentes principais e da classificação automática hierárquica, bem como um Sistema de Informações Geográficas para representar os dados por meio de banco de dados georreferenciado. As principais características que contribuíram para o agrupamento dos municípios foram: área agrícola, presença efetiva de cultura semiperene nas unidades de produção agropecuária (upas, pecuária, concentração de upas com áreas de até 50 ha, número de tratores e valor total da produção agropecuária do município. Grupos relativamente homogêneos de municípios foram constituídos e, nesse sentido, reuniões de municípios com características e problemáticas similares podem ser efetuadas, buscando alternativas participativas e conjuntas para o desenvolvimento regional.Currently, owing to the occurrence of environmental problems, along with the need of environmental preservation, both the territory management of Hydrographic Basin and the conservation of natural resources have proven to have remarkable importance. Thus, the mean goal of the research is to raise and scrutinize social-economic and technologic data from the Mogi Guaçu River Hydrographic Basin (São Paulo, Brazil. The aim is to group municipalities with similar characteristics regarding the collected data, which may direct joint actions in the

  12. Optical microscopy revision of the morphostructure features of nannoliths Incertae Sedis present on paleocene/middle eocene section of the Espirito Santo Basin; Revisao ao microscopio optico da morfoestrutura dos nanolitos Incertae Sedia da secao paleogenica (paleoceno/eoceno medio) da Bacia do Espirito Santo

    Energy Technology Data Exchange (ETDEWEB)

    Oliveira Costa, Simone de; Antunes, Rogerio L. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas

    1994-04-01

    Most of the nannolith species described in this paper present undoubtedly biostratigraphic importance both in international and PETROBRAS biozonal schemes. In the latter, they are used in routine dating of Paleogene strata in Brazilian marginal basins. The studied nannofossils have all been recovered from cuttings of the Paleocene/Meso Eocene section of wells in the Espirito Santo Basin (eastern Brazilian continental margin). The basic aim of this study is to present detailed O.M. (optical microscope) descriptions of these calcareous nannofossils in order to optimize their use in the routine biostratigraphic dating. Altogether, nine species have been identified, of which one is new (Ellipsolithus gomidei), and two other are recorded for the first time in Brazil (Ellipsolithus bollii and Trochastrites hohnensis). The identified species belong to the following genera: Ellipsolithus, Nannotetrina, Tribrachiatus, and Trochastrites. All of them are considered incertae sedis, because they can not be assigned to any nannofossil families recognized so far. (author). 4 figs.

  13. Análise temporal da permeabilidade da superfície urbana da sub-bacia do córrego centenário em Lavras, MG Temporal analysis of permeability urban surfaces locaty of the Centenário sub-basin creek in Lavras, MG

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    Marcelo Barbosa Furtini

    2007-08-01

    Full Text Available Nos últimos anos, séries de estudos têm sido realizadas por estudiosos de diferentes áreas para estabelecer os efeitos da urbanização na hidrologia de sub-bacias. O processo de urbanização freqüentemente produz alterações na drenagem da água pluvial. Um SIG com dados cadastrais planaltimétricos e fotografias aéreas permitiram estudar a ocupação em 3 diferentes períodos (1999, 1986 e 1971 na sub-bacia do Centenário, na cidade de Lavras, MG. Objetivou-se com este estudo realizar a análise temporal da permeabilidade da superfície na sub-bacia do Centenário comparando os 3 períodos. A permeabilidade da superfície urbana foi obtida pela análise da ocupação dos quarteirões por área construída ou pavimentada. Os resultados permitiram verificar que a permeabilidade da superfície decaiu de 1971 para 1999. Nestes anos a área urbana cresceu reduzindo a permeabilidade do solo da sub-bacia. Conclui-se que, sendo óbvio que a urbanização causou impactos na sub-bacia, as metodologias utilizadas para essas análises foram muito eficientes para determinar os impactos de superfícies impermeáveis.Over the past years, a series of studies have been undertaken by scientists of different areas, to assess the effects of urbanization on the hidrology of subbasins. The urbanization process has frequently been done alterations on the drainage of pluvial water. A GIS data base containing the cadastral planiltimetric charts and aerial photographies allowed to study the land occupation in three different periods (1999, 1986 and 1971 of the Centenário Subbasin in Lavras city, MG. So, the subject of this study was to realize a temporal analysis of the surface permeability of the Centenário subbasin comparing the three periods. The urban surface permeability was avaibled by the analysis of the city's squares occupation per builted or paved area. The results permitted verify that the surface permeability downed from 1971 to 1999 years. In

  14. Análise espacial da soroprevalência da hepatite A em crianças de uma região carente de Duque de Caxias, RJ, Brasil Spatial analysis of hepatitis A seroprevalence in children of a poor region of Duque de Caxias, Rio de Janeiro, Brazil

    OpenAIRE

    Roberto de Andrade Medronho; Luis Iván Ortiz Valencia; Bruno de Paula Menezes Drumond Fortes; Ricardo Cerqueira Campos Braga; Simone do Valle Ribeiro

    2003-01-01

    Os autores estimaram áreas de risco para hepatite A em quatro setores censitários de Duque de Caxias, Rio de Janeiro, área de intervenção ambiental do Programa de Despoluição da Baía de Guanabara, a partir de um inquérito de soroprevalência para hepatite A em crianças residentes nesta localidade. A amostra consistiu de 454 crianças com idade entre 1 e 9 anos, selecionadas através de amostra aleatória simples em cada grupo etário. Foram coletadas alíquotas de sangue para detecção de anticorpos...

  15. Geochemical behavior of radionuclides and heavy metals in soils from Corumbatai River basin (SP), Brazil; Comportamento geoquimico de radionuclideos e metais pesados em solos da bacia do Rio Corumbatai (SP)

    Energy Technology Data Exchange (ETDEWEB)

    Conceicao, Fabiano Tomazini da

    2004-07-01

    The purpose of this research was to study the geochemical behavior of radionuclides and heavy metals in soils of agricultural use at Corumbatai River basin (SP). The natural concentration and variability in sedimentary rocks at Corumbatai river basin follow the trend Ca > Mg > K > Na, with the concentration of heavy metals and radionuclides. The distribution of exposure rate in soils shows the occurrence of higher values towards south of the Corumbatai river basin, region where are applied phosphate fertilizers, amendments and 'vinhaca' in sugar cane crops. Heavy metals and radionuclides incorporated in phosphate fertilizers and amendments are annually added during the fertilization process in the sugar cane crops, but if they are utilized in accordance with the recommended rate, they do not rise the concentration levels in soils up to hazards levels. Thus, they are lower transferred from soils to sugar cane at Corumbatai river basin, not offering hazard to the ecosystem and animal or human health. (author)

  16. Correlações entre a permeabilidade e os atributos físicos do solo da sub-bacia do córrego centenário da cidade de Lavras-MG Correlations between the permeability and the physical attributes of the soil of the sub-basin of the centenário stream of the Lavras city-MG

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    Fabrício de Menezes Telo Sampaio

    2006-08-01

    Full Text Available A permeabilidade do solo é um atributo físico de grande importância para a engenharia, sendo necessária a sua determinação nos trabalhos em que se tem movimento d´água no solo. Vários são os atributos físicos do solo que influenciam nos valores do seu coeficiente de permeabilidade, sendo considerados de maior importância a densidade e a porosidade. Neste trabalho, objetivou-se verificar as correlações existentes entre os atributos físicos do solo com a permeabilidade. Esses solos foram obtidos da sub-bacia do córrego Centenário, localizada na área urbana da cidade de Lavras, sul do Estado de Minas Gerais. Para a coleta desses solos, utilizou-se de um amostrador projetado especialmente para esta pesquisa, que apresentou uma boa eficiência na representatividade dos solos retirados. O atributo físico do solo que melhor se correlacionou com a permeabilidade foi a macroporosidade, verificando-se ainda boa correlação para a microporosidade, resistência à penetração e a densidade.The permeability of the soil is a physical attribute of great importance for engineering, being necessary its determination in the works where it has water movement in the soil. Several are the physical attributes of the soil that have influence in the values of the coefficient of permeability, being considered the most important ones the density and the porosity. This paper aimed at verifing the existing correlation between different physical attributes of the soil with the permeability. These soils were removed of the sub-basin of the stream Centenário, located in the urban area of the Lavras city (Minas Gerais state, Brazil. For collecting those soils were used a sampler projected especially for this research, wich presented a good efficiency in the representation of removed soil, and comparing the results of the tests in laboratory with the field tests. The attribute of the soil that better correlated with the permeability was the macroporosity

  17. Análise comparativa entre duas bacias hidrográficas utilizando um protocolo de avaliação rápida da diversidade de habitats / Comparative analysis between two hydrographic basin using a rapid habitats diversity evaluation protocol

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    Rogério Antonio Krupek

    2010-04-01

    Full Text Available Este trabalho teve por objetivo utilizar um protocolo de avaliação rápida da diversidade de habitats como ferramenta para comparar duas bacias de drenagem localizadas no município de Guarapuava, estado do Paraná: a bacia hidrográfica do rio Cascavel (25º23’03”S-51º28’12”W e a bacia hidrográfica do rio das Pedras (25º13’10”S-51º28’40”W, que se encontram relativamente próximas e estão sob diferentes intensidades de influências antrópicas. Este protocolo tem como finalidade avaliar características da água e do entorno de ecossistemas aquáticos a partir da atribuição de pontuação a cada um dos parâmetros com base na observação das condições do habitat. As coletas de dados foram realizadas no período de 10 de junho a 30 de julho de 2007 em vinte pontos de amostragem estabelecidos em cada uma das bacias de drenagem estudadas. Comparativamente, a grande maioria dos parâmetros apresentou diferenças significativas entre os dois sistemas, sendo que os rios e riachos da bacia do rio das Pedras encontram-se nitidamente em melhores condições que a bacia do rio Cascavel, onde seus ecossistemas aquáticos apresentam visíveis sinais de degradação. O uso de avaliações rápidas como este protocolo é uma importante ferramenta no desenvolvimento de programas de monitoramento ecológico e na restauração de ambientes lóticos. AbstractThe main object of the present work was to use a protocol of rapid habitat diversity evaluation as tool to compare two drainage basin located in the municipality of Guarapuava, mid-southern region of Paraná state: Cascavel river basin (25º23’03”S-51º28’12”W and Pedras river basin (25º13’10”S-51º28’40”W, which meets relatively near and under different intensities of entropic influences. This protocol has the purpose of evaluating water and riparian characteristics of the aquatic ecosystems from the attribution of values to each parameter through observation of

  18. Determinantes ambientais da ocorrência de espécies de peixes em riachos de cabeceira da bacia do rio Ivinhema, alto rio Paraná - DOI: 10.4025/actascibiolsci.v29i2.520 Environmental determinants of fish species occurrence in headwaters streams of Ivinhema river basin, upper Paraná river - DOI: 10.4025/actascibiolsci.v29i2.520

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    Thiago Rota Alves Felipe

    2007-12-01

    Full Text Available Com o objetivo de quantificar a importância de algumas características fisiográficas dos riachos sobre a ocorrência de quatro espécies de Characidae em riachos de cabeceira na bacia do rio Ivinhema, realizaram-se amostragens bimestrais em dez riachos com uso de telas de isca, com esforço amostral padronizado. A influência das variáveis ambientais sobre a ocorrência das espécies de peixes foi quantificada utilizando-se do modelo da análise de regressão logística. Constatou-se que a velocidade da correnteza foi o principal fator limitante da ocorrência de Serrapinnus notomelas, Hemigrammus marginatus e Moenkhausia sanctaefilomenae, enquanto a profundidade dos riachos foi o principal determinante da ocorrência de Bryconamericus stramineus. Assim, as primeiras espécies ocorrem predominantemente em locais com baixa velocidade da correnteza, enquanto B. stramineus ocorre principalmente em locais com pouca profundidade e com elevada velocidade da correnteza, sugerindo que as características fisiográficas dos habitat sejam importantes determinantes da colonização e persistência das espécies. Palavras-chave: distribuição espacial, peixes de riachos, bacia do rio Ivinhema.In order to quantify the importance of some physiographic characteristics of headwaters streams of Ivinhema basin on occurrence of four Characidae species, bimonthly samples in 10 streams using a rectangular sieve, with standardized sampling effort were collected. The influence of environmental descriptors on species occurrence was quantified using a logistic regression model. It was observed that the water velocity was the main limiting factor to occurrence of Serrapinnus notomelas, Hemigrammus marginatus and Moenkhausia sanctaefilomenae while stream depth was the main determinant of Bryconamericus stramineus occurrence. Thus, the first three species are found mainly in sites with less water velocity, while B. stramineus is found mainly in sites with less depth

  19. Afecções podais em vacas da bacia leiteira de Rondon do Pará Foot disorders in cows from basin milk of Rondon do Pará

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    José Alcides S. Silveira

    2009-11-01

    Full Text Available As doenças digitais estão entre as principais causas de performance reduzida de rebanhos leiteiros. Com o objetivo de determinar a prevalência, classificar clinicamente e estabelecer os fatores epidemiológicos das enfermidades podais em vacas da bacia leiteira de Rondon do Pará, foram avaliadas 1.236 vacas, das quais 275 apresentaram pelo menos um tipo de lesão podal. Identificou-se 655 lesões, o que resultou em uma prevalência de 22,25%. As enfermidades mais frequentes foram hiperplasia interdigital (80,92%, necrobacilose interdigital (6,11% e cascos com crescimento excessivo (6,42%. Os membros pélvicos foram os mais acometidos (61,83% e o espaço interdigital, tanto nos membros torácicos (36,34%, quanto nos pélvicos (48,09%, a região digital acometida com maior frequência. O estudo epidemiológico mostrou que características ambientais tais como relevo montanhoso, pastagem em formação com presença de troncos e galhos de árvores, irregularidades nos pisos dos currais, presença de piçarra e lama podem favorecer o aparecimento das lesões podais. Constatou-se a ausência de medidas de controle e profilaxia de afecções que acometem os cascos em 95,5% das propriedades estudadas. O exame clínico específico do casco foi eficiente no diagnóstico das enfermidades.Foot diseases are some of the main causes of low performance in dairy cows. In order to determine the prevalence, clinical classification and to establish the epidemio-logical factors of foot diseases in cows from basin milk of Rondon do Pará, 1,236 cows were evaluated and 275 had at least one type of foot injury. A total of 655 lesions was showed which a prevalence of 22.25%. Most frequent lesions were interdigital hyperplasia (80.92%, claw overgrowth (6.42%, and interdigital necrobacillosis (6.11%. Hind limbs were most frequently affected (61.83%, and lesions affecting the interdigital space were the most common in both the thoracic (36.34% and hind limbs (48

  20. Vazões máximas e mínimas para bacias hidrográficas da região alto Rio Grande, MG Maximum and minimum discharges for Alto Rio Grande region basins, Minas Gerais state, Brazil

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    Carlos Rogério de Mello

    2010-04-01

    Full Text Available Vazões máximas são grandezas hidrológicas aplicadas a projetos de obras hidráulicas e vazões mínimas são utilizadas para a avaliação das disponibilidades hídricas em bacias hidrográficas e comportamento do escoamento subterrâneo. Neste estudo, objetivou-se à construção de intervalos de confiança estatísticos para vazões máximas e mínimas diárias anuais e sua relação com as características fisiográficas das 6 maiores bacias hidrográficas da região Alto Rio Grande à montante da represa da UHE-Camargos/CEMIG. As distribuições de probabilidades Gumbel e Gama foram aplicadas, respectivamente, para séries históricas de vazões máximas e mínimas, utilizando os estimadores de Máxima Verossimilhança. Os intervalos de confiança constituem-se em uma importante ferramenta para o melhor entendimento e estimativa das vazões, sendo influenciado pelas características geológicas das bacias. Com base nos mesmos, verificou-se que a região Alto Rio Grande possui duas áreas distintas: a primeira, abrangendo as bacias Aiuruoca, Carvalhos e Bom Jardim, que apresentaram as maiores vazões máximas e mínimas, significando potencialidade para cheias mais significativas e maiores disponibilidades hídricas; a segunda, associada às bacias F. Laranjeiras, Madre de Deus e Andrelândia, que apresentaram as menores disponibilidades hídricas.Maximum discharges are applied to hydraulic structure design and minimum discharges are used to characterize water availability in hydrographic basins and subterranean flow. This study is aimed at estimating the confidence statistical intervals for maximum and minimum annual discharges and their relationship wih the physical characteristics of basins in the Alto Rio Grande Region, State of Minas Gerais. The study was developed for the six (6 greatest Alto Rio Grande Region basins at upstream of the UHE-Camargos/CEMIG reservoir. Gumbel and Gama probability distribution models were applied to the

  1. Avaliação socioambiental da bacia hidrográfica do rio Pequeno, São José dos Pinhais (PR / Socio-environmental evaluation of the Pequeno River hydrographic basin, São José dos Pinhais (PR

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    Ariodari Francisco dos Santos

    2009-08-01

    Full Text Available ResumoExiste atualmente uma preocupação com o processo crescente de ocupação humana desordenada na bacia hidrográfica do rio Pequeno e a sua consequente degradação ambiental. Isso vem sendo demonstrado através de alertas e denúncias feitas por diversos segmentos da sociedade, as quais estão, frequentemente, sendo veiculadas pela mídia local e regional. Essa bacia merece atenção especial na medida em que o rio Pequeno desempenha um papel importante na disponibilização de água superficial para São José dos Pinhais na Região Metropolitana de Curitiba (PR. Diante desse cenário, faz-se mister investigar as atuais condições ambientais da bacia hidrográfica do rio Pequeno, visando avaliar qualitativamente as implicações ambientais decorrentes das diversas práticas agrícolas desenvolvidas pela agricultura familiar, pelo uso e ocupação do solo na bacia em tela. Na presente pesquisa, buscou-se evidenciar a problemática à luz de uma abordagem teórica que contemple o inter-relacionamento das variáveis ambientais, procurando caracterizar os relacionamentos entre os elementos naturais do meio e a dinâmica de uso e ocupação do solo atual. Constatou-se que esta é uma área ambientalmente frágil e, diante dos diversos usos e ocupação dos solos identificados, essa bacia vem passando por um processo de degradação ambiental acentuada, o que promove a deteorização da qualidade de suas águas, tornando assim, iminente o risco da sua perda como abastecimento público, pois a atividade agrícola na bacia, com o manejo intensivo dos solos, o uso de agroquímicos e a urbanização, geram impactos ambientais, tanto em termos de processos erosivos quanto em riscos de contaminação dos recursos hídricos.AbstractThere is, nowadays, a concern regarding the environmental consequences of the growing process of unordered human settlements at Pequeno River hydrographical basin, in São José dos Pinhais (Parana State, South Brazil

  2. Superimposed versus residual basin: The North Yellow Sea Basin

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    Wenyong Li

    2012-01-01

    Full Text Available The North Yellow Sea Basin is a Mesozoic and Cenozoic basin. Based on basin-margin facies, sedimentary thinning, size and shape of the basin and vitrinite reflectance, North Yellow Sea Basin is not a residual basin. Analysis of the development of the basin’s three structural layers, self-contained petroleum systems, boundary fault activity, migration of the Mesozoic–Cenozoic sedimentation centers, different basin structures formed during different periods, and superposition of a two-stage extended basin and one-stage depression basin, the North Yellow Sea Basin is recognized as a superimposed basin.

  3. The Reconcavo Basin reservoirs in transition of the pre-rift and rift phases: new discussion; Os reservatorios da Bacia do Reconcavo na transicao das fases pre-rift e rift: nova discussao

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    Romao, Felipe [Queiroz Galvao Perfuracoes S.A., Rio de Janeiro, RJ (Brazil); Borghi, Leonardo [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil)

    2004-07-01

    The facies analysis of the stratigraphic interval represented by Sergi, Itaparica, and Agua Grande formations (Brotas and Santo Amaro groups) of Reconcavo basin was guided by cores description of the well 1-CAL-1-BA (Caldeirao 1), located in the Northwestern part of the Reconcavo Basin. Sedimentary facies (lithofacies) were described and grouped into four facies association interpreted as fluvial (upper Sergi Fm.), fluvial-lacustrine (Itaparica Fm.), and fluvial-eolian (Agua Grande Fm.) depositional systems; also, forced-regression erosive surfaces (unconformities) and transgressive ones were identified. The analysis of these results points that the upper Sergi Fm. would have subsided as consequence of the early rifting of the basin, creating space for the formation of shallow lake (Itaparica Fm.). This ancient lake undergone several forced regressions due to a continuous early tectonism (rifting), responsible by the sand input into the lake, in a coarsening up cycle topped by the expressive fluvio-eolian system of the Agua Grande Fm. Each forced regression smaller cycle is capped by lake flooding shales. Above this major CU cycle, the intensification of tectonic event subsided the basin and created a deep lake (Candeias Fm.) - the Rift Phase. So, the initial rifting would not have started during a 'Candeias time', but by earlier, in a less intense way. It must be stressed that this interpretation was based solely in only one well, but it's important to keep this new idea in mind for revision or new studies on this interval. (author)

  4. The relationships of the rift sequence in the Pernambuco sub-basin, Brazil; As relacoes de borda da sequencia rifte na Sub-bacia de Pernambuco, NE do Brasil

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    Sa, Emamuel Ferraz Jardim de; Silva, Fernando Cesar Alves da; Souza, Zorano Sergio de; Antunes, Alex Francisco; Nascimento, Marcos Antonio Leite do; Guedes, Ingred Maria Guimaraes [Rio Grande do Norte Univ., Natal, RN (Brazil). Dept. de Geologia. Programa de Pos-graduacao em Geodinamica e Geofisica]. E-mail: emanuel@ccet.ufrn.br; Lima Filho, Mario Ferreira; Cruz, Liliane Rabelo; Neumann, Virginio Henrique M. Lopes [Rio Grande do Norte Univ., Natal, RN (Brazil). Dept. de Geologia. Programa de Pos-graduacao em Geociencias; Almeida, Camilla Bezerra de; Frutuoso Junior, Luiz Jorge [Rio Grande do Norte Univ., Natal, RN (Brazil). Curso de Geologia

    2003-07-01

    The Pernambuco Sub-basin is one of the exploration frontiers along the eastern brazilian coast. This sub-basin presents an example of an outcropping rift sequence, comprising the Cabo Formation and the Ipojuca Magnetic Suite. A characteristic facies of the Cabo Formation is made up by conglomeratic fans with large blocks and pebbles, adjacent to normal faults along the basin border. These faults display an en echelon arrangement, with oblique/dextral transfer faults occupying the bridge sectors. In the Grande Recife region, or close to the Maragogi High, the Cabo Formation unconformably overlies the Precambrian basement; in this case, the basal sediments are sandstones with variable granulometry, volcanics being absent or very subordinate. Another kind of border relation is observed in the Camela region, where the base of the Cabo Formation (once again dominated by sandstones) is accompanied by an extensional detachment, in which listric antithetic and synthetic faults are rooted. These structures define a NW-Se trending major extension axis, identifying an oblique rift opening along this sector of the continental margin. These data will be integrated in a tectono-stratigraphic model to be used in re-evaluating the oil potential of this basin. (author)

  5. Identification of an impact structure in the Upper Cretaceous of the Santos Basin in 3D seismic reflection data; Identificacao de uma estrutura de impacto no Cretaceo Superior da Bacia de Santos em sismica de reflexao 3D

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    Correia, Gustavo Alberto [PETROBRAS, Santos, SP (Brazil). Exploracao e Producao. Interpretacao e Avaliacao das Bacias da Costa Sul Polo Sul]. E-mail: gustavoac@petrobras.com.br; Menezes, Jorge Rui Correa de; Bueno, Gilmar Vital

    2005-05-01

    This work presents the unpublished Praia Grande impact structure, located in the Santos basin, approximately 200 km southeast from the coastline of Sao Paulo State, Brazil. The identification of this structure is based on the interpretation of three-dimensional seismic data, acquired and processed in 2004 for petroleum exploration in a PETROBRAS concession block in the Santos Basin. The main morphological elements imposed on Upper Cretaceous rocks are a structural high in the center of the crater, an adjacent ring syncline, and, externally, several concentric circular listric normal faults. The structure is apparently well preserved from erosion, measures around 20 km in diameter, is buried by 4 km of rocks and occurred in the Santonian (85,8-83,5 Ma). (author)

  6. Oil seepage detection technique as a tool to hydrocarbon prospecting in offshore Campos Basin-Brazil; Deteccao de exsudacoes de oleo como uma ferramenta de prospeccao de hidrocarbonetos na regiao maritima da Bacia de Campos - Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Castilho, Jose G.; Brito, Ademilson F. [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Lab. de Modelagem de Bacias (LAB2M); Landau, Luiz [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programas de Pos-graduacao de Engenharia (COPPE). Lab. de Metodos Computacionais em Engenharia (LAMCE)

    2004-07-01

    With a proven capacity to identify oil slicks in offshore regions, RADARSAT-1 imagery can be useful for oil exploration purposes. The paper discusses the seepage detection method at Campos Basin, offshore Rio de Janeiro State, which is responsible for 80% of the Brazilian production of oil and gas. It is known that the horizontal migration of petroleum can occurs over tens or even hundreds of kilometers, where the source rock placed in more deep locations can be linked with shallow reservoirs or traps and even reach the ocean. It means that seepage can provide information for risking petroleum charge at basin scales, and cannot have a direct relation with the geographical position of the interpreted seeps and possible filled prospects. A good understanding of the geology, and hence the petroleum systems of a basin is the key to use seepage in exploration. The work is divided into three main steps. First step were select oil seepages interpreted at Campos Basin where is found several giant petroleum fields. Second, the geology of the study area and its structural and stratigraphic features were analyzed, in order to identify possible migration pathways related to faults generated by halokinesis. Another important aspect is the presence of 'windows' or ducts in the evaporates beds allowing the contact between the section that contains source rocks and the turbidities reservoirs, that contain the majority of the oil discovers. All these features were interpreted based on a regional dip seismic line (203 - 76), and a geologic cross section with E-W orientation, showing the structure of the Marlim Field. Finally, all the information was integrated in a Geographical Information System (GIS), and then analyzed in an interdisciplinary environment, with the intention to link possible routes of oil migration to post-evaporites reservoirs or to interpreted seeps. (author)

  7. Efeito do gradiente altitudinal/latitudinal sobre espécies de aves florestais da família Furnariidae na Bacia do Rio Tibagi, Paraná, Brasil Effect of altitudinal/latitudinal gradient about forest ovenbirds species (Aves: Furnariidae in the Tibagi river basin, Paraná, Brazil

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    Fernando de L. Fávaro

    2006-03-01

    Full Text Available Variações na riqueza e abundância de Furnariidae florestais foram analisadas ao longo do gradiente altitudinal/latitudinal da bacia do rio Tibagi (BRT, Paraná, Brasil. A Floresta Ombrófila Mista (1060 m a.n.m. é a formação dominante no sul da BRT, enquanto que a Floresta Estacional Semidecidual (298 m a.n.m., ocorre no norte. O número total de espécies obtidas na BRT foi 14. A riqueza e a abundância de Furnariidae foram maiores no sul (12 espécies, IPA = 2,01 do que no norte (cinco espécies, IPA = 0,45 da BRT. As similaridades também foram altas entre o sul e o centro da BRT. A estrutura da comunidade de Furnariidae também apresentou correlação positiva entre o sul e o centro da BRT (coeficiente de correlação por postos de Spearman; r s = 0,96, r s = 0,89, r s = 1,00. As relações evolutivas de alguns representantes de Furnariidae com o sul da América do Sul e com os Andes podem explicar a maior presença desta família no sul da BRT. Um outro aspecto que também pode ajudar a explicar os resultados apresentados por Furnariidae são as semelhanças entre a Floresta Ombrófila Mista do sul da BRT e outras florestas temperadas da América do Sul.Variations in richness and abundance of forest ovenbirds (Aves: Furnariidae were studied along an altitudinal/latitudinal gradient of the Tibagi river basin (TRB, southern Brazil. Mixed Temperate Rain Forest (1060 m a.s.l. is the dominant forest in the southern TRB while Seasonal Semideciduous Forest (298 m a.s.l. occurs in the northern. The total number of species obtained in the TRB was 14. Richness and Abundance of Furnariidae were greater in the southern (12 species, IPA = 2.01 than in the northern (five species, IPA = 0.45 TRB. Similarities were also greatest in the southern and in the middle TRB. The community structure of Furnariidae also presented a positive correlation between the southern and the middle TRB (Spearman's rank correlation coefficient; r s = 0.96, r s = 0.89, r s

  8. Análise comparativa de metodologias aplicadas à delimitação da bacia hidrográfica do Rio Doce – RN / Comparative analysis of methodologies applied to the demarcation of the basin of Rio Doce - RN

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    Franklin Roberto da Costa

    2016-12-01

    Full Text Available A bacia hidrográfica é considerada um recorte geográfico importante para o planejamento ambiental. A sua precisa delimitação permite realizar um planejamento adequado para ocupação e uso correto pela sociedade. Nesse sentido, o presente trabalho tem como objetivo realizar uma análise comparativa visual das delimitações automáticas realizadas com os programas TauDEM, SAGA e TERRAHIDRO, bem como da delimitação por análise visual, com as delimitações oficiais do SEMARH - RN e a ANA (ottobacia nível 05, visando redefinir e atualizar os limites da bacia hidrográfica do Rio Doce/RN. Para fazer a delimitação utilizaram-se os dados de elevação do terreno do banco de dados geomorfométricos do Brasil, TOPODATA, hidrografia das cartas topográficas da SUDENE, na escala 1:100.000, imagens do Google Earth. Os dados foram trabalhados nos SIGs QGIS 2.14 Essen e o Terraview hidro 0.4.1. Os resultados mostraram que a delimitação por análise visual e a automática utilizando a plataforma TERRAHIDRO identificaram os limites da bacia em suas áreas aplainadas. Já o TauDEM e o SAGA identificaram um paleocanal do rio Doce, direcionando, assim o ponto exutório da bacia. Entende-se que o TERRAHIDRO apresentou o melhor resultado para a delimitação da bacia, propondo-se seu uso para pesquisas relacionadas à bacia em escalas média e grande.

  9. Conflictos ecoterritoriales transfronterizos y megaproyectos extractivistas en cuencas compartidas de la Patagonia; Conflitos ecoterritoriais transfronteiriços e megaprojetos extrativistas nas bacias da Patagônia; Cross-border Eco-territorial Conflicts and Extractivist Megaprojects in the Patagonia River Basins

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    Bárbara Jerez Henríquez

    2015-01-01

    Full Text Available Resumen: Las cuencas transfronterizas de la Patagonia Andina argentino- chilena en los útimos 15 años se ha convertido en un espacio transnacional en el que aterrizan megaproyectos de minería y represas hidroeléctricas que conllevan importantes impactos en los ecosistemas, economías y culturas locales, como parte de una tendencia en América Latina orientada al avance de las territorialidades extractivistas hacia zonas fronterizas que además significa transgredir marcos legales previos para el manejo de cuencas compartidas. En ese contexto emergen fuertes procesos de resistencia desde diversas narrativas que en su conjunto reivindican otras territorialidades en estas cuencas abarcando escalas locales y transfronterizas que plantean nuevos debates y desafíos para discutir los conflictos ecoterritoriales que emergen en zonas de fronteras.     Palabras clave: extractivismo, cuencas, fronteras, territorialidades, Patagonia.       Resumo: As bacias transfronteiriças da Patagônia Andina Argentino-chilena nos últimos 15 anos se converteram em um espaço transnacional em que aterrissam mega-projetos de mineração e represas hidroelétricas que conduzem importantes impactos nos ecossistemas, economias e culturas locais, como parte de uma tendência na América Latina de avanço das territorialidades extrativistas em direção a zonas fronteiriças que, além de tudo, significam transgredir marcos legais para o manejo de bacias divididas. Nesse       contextos emergem fortes processos de resistência desde diversas narrativas que em seu conjunto reivindicam outras territorialidades nestas bacias cobrindo escalas locais e transfronteiriças que colocam novos debates e desafios para se discutir os conflitos ecoterritoriais que emergem nas zonas de fronteira.     Palavras-chave: extrativismo, bacias, fronteiras, territorialidade, Patagônia.       Abstract: The cross-border river basins of the Argentine-Chilean Andean Patagonia have

  10. Georeferenced database generation with the purpose of hydrologic molding in reservoirs of the hydrographic basin of Jaguaribe river in the state of Ceará, Brazil Geração de base de dados georreferenciada com finalidade de modelagem hidrológica em reservatórios da bacia hidrográfica do rio Jaguaribe, Ceará, Brasil

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    Raimundo A. de O. Leão

    2013-04-01

    Full Text Available The edafoclimatic conditions of the Brazilian semiarid region favor the water loss by surface runoff. The state of Ceará, almost completely covered by semiarid, has developed public policies for the construction of dams in order to attend the varied water demand. Several hydrological models were developed to support decisive processes in the complex management of reservoirs. This study aimed to establish a methodology for obtaining a georeferenced database suitable for use as input data in hydrological modeling in the semiarid of Ceará. It was used images of Landsat satellite and SRTM Mission, and soil maps of the state of Ceará. The Landsat images allowed the determination of the land cover and the SRTM Mission images, the automatic delineation of hydrographic basins. The soil type was obtained through the soil map. The database was obtained for Jaguaribe River hydrographic basin, in the state of Ceará, and is applicable to hydrological modeling based on the Curve Number method for estimating the surface runoff.As condições edafoclimáticas do semiárido brasileiro favorecem a perda de água por escoamento superficial. O Estado do Ceará,quase totalmente abrangido pelo semiárido, desenvolveu políticas públicas voltadas para a construção de açudes,a fim de atender à demanda hídrica diversificada. Vários modelos hidrológicos foram desenvolvidos para subsidiar os processos decisórios no complexo manejo dos reservatórios. Este trabalho teve como objetivo estabelecer uma metodologia para a obtenção de uma base de dados georreferenciada e adequada para uso como dados de entrada na modelagem hidrológica,no semiárido cearense. Foram utilizadas imagens de satélite Landsat e da missão SRTM, e mapa de solos do Estado do Ceará. As imagens Landsat possibilitaram determinar a cobertura do solo,e as imagens da missão SRTM, a delimitação automática das bacias hidrográficas. O tipo de solo foi obtido por meio do mapa de solos. A

  11. Biologia dos Palaemonidae (Crustacea, Decapoda da bacia hidrográfica de Ratones, Florianópolis, Santa Catarina, Brasil Biology of Palaemonidae (Crustacea, Decapoda from the Ratones hidrografic basin, Florianópolis, Santa Catarina, Brazil

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    Yara Maria Rauh Müller

    1999-01-01

    Full Text Available Biological aspects of palemonids, collected from March, 91 to December, 95 in the Ratones Hidrographic Basin, Florianópolis, Santa Catarina, have been investigated. Individuals of different sizes of Macrobrachium acanthurus (Weigmann, 1836, Macrobrachium carcinus (Linnaeus, 1758, Macrobrachium olfersii (Weigmann, 1836, Macrobrachium potiuna (Müller, 1880, Palaemonetes argentinus Nobili, 1901 and Palaemon pandaliformis (Stimpson, 1871 were registered. These prawns, showed reproductive strategies, typical of the Palaemonidae (Rafinesque, 1815, associated to species particularities, and seem to adapt to different environmental conditions.

  12. Qualidade da água em região alterada pela mineração de carvão na microbacia do rio Fiorita (Siderópolis, Estado de Santa Catarina, Brasil - DOI: 10.4025/actascibiolsci.v26i2.1610 Water quality in disturbed area by coal mining, Fiorita river basin (Siderópolis, State of Santa Catarina, southern Brazil - DOI: 10.4025/actascibiolsci.v26i2.1610

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    Eder Santo

    2004-04-01

    Full Text Available A mineração de carvão constitui importante atividade econômica na região sul catarinense. A área da bacia hidrográfica do rio Fiorita (Município de Siderópolis, SC foi intensamente minerada e atualmente apresenta inúmeros locais com rejeitos, estéreis de mineração e lagos ácidos. Este trabalho teve como principal objetivo verificar os efeitos da mineração de carvão na qualidade da água dos corpos de água na microbacia do rio Fiorita. As análises gráficas e multivariada (“cluster” sugerem que a microbacia apresenta um gradiente horizontal, com redução da qualidade da água em direção à parte baixa da bacia, com diminuição do pH e elevação nos valores de acidez total, condutividade elétrica, Eh e nos teores de sólidos totais, sulfato, alumínio, cálcio, ferro II e total, magnésio e manganês. Esses dados sugerem o efeito da concentração de metais. Como primeira aproximação, de acordo com a Resolução Conama 20 de 1986, as águas da microbacia do rio Fiorita apresentam-se com elevado grau de comprometimento de sua qualidade e de uso restrito. Também são apresentadas considerações visando contribuir com subsídios à recuperação ambiental da área em questãoCoal mining is an important economical activity in the south of Santa Catarina, Brazil. The em>Fiorita River basin (municipality of Siderópolis was heavily mined out and nowadays several places with mining spoils and sterile soil, as well as acid lakes, can be found in its area. This study aimed to carry out an environmental diagnosis on the water bodies quality in that region. Graphic and cluster analysis suggested that the Fiorita River basin was compartmented. It seemed that there was a deterioration gradient in water quality toward the lower portion of the basin, with pH decrease and a rise in values of total acidity, electric conductivity, Eh, total solids contents, sulphate, aluminium, calcium, iron II and totals, manganese and magnesium

  13. ANÁLISE HISTÓRICA DAS TRANSFORMAÇÕES DA FLORESTA AMAZÔNICA EM ÁREAS AGRÍCOLAS NA BACIA DO RIO SUIA-MIÇU. - Historical Changes of the Amazonian Forest into Agricultural Lands in the Suia-Miçu River Basin.

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    Antonio Roberto Formaggio

    2008-06-01

    Full Text Available Mudanças no uso e cobertura da terra, como as ocorridas nas áreas de expansão agrícola na AmazôniaLegal, geram uma série de impactos sociais, econômicos e ambientais. O entendimento destes processospode permitir um melhor planejamento de políticas públicas a fim de monitorar e mapear áreas maissuscetíveis a problemas ambientais. Sendo assim, este trabalho teve como objetivo analisar a dinâmicade ocupação da Bacia do Rio Suiá-Miçu, um dos afluentes do Rio Xingu localizado ao norte do estadodo Mato Grosso. Os mapas de uso e cobertura da terra para cada um dos períodos analisados (1973,1984 e 2005 foram confeccionados com o auxílio de imagens dos sensores MSS/Landsat-1, TM/Landsat-5 e do sensor MODIS/Terra. Os resultados mostraram que até 1984, 13% da vegetação natural dabacia havia sido desflorestada, enquanto que em 2005 as atividades agrícolas já ocupavam 40% daárea de estudo. Desta forma, tendo em vista as mudanças na paisagem observadas ao longo das últimasdécadas, torna-se notória a necessidade urgente de estudos mais aprofundados visando a avaliaçãodos impactos ambientais, bem como a preservação dos recursos naturais na regiãoLand use and land cover changes, as seen in the agricultural expansion areas in the Brazilian LegalAmazon, have as consequence several social, economic and environmental impacts. The understandingof these processes allows a better planning of public policies in order to monitor and map areas moresusceptible to environmental problems. Hence, this work had as objective to analyze the land use/landcover changes dynamics in the Suiá-Miçu River Basin, located in the north part of Mato Grosso state,Brazil. The land use/land cover maps for each of the analyzed periods (1973, 1984 and 2005 weremade using images from the MSS/Landsat-1, TM/Landsat-5 and the MODIS/Terra sensors. The resultsshowed that until 1984, 13% of the natural vegetation of the watershed was deforested, while in 2005the

  14. Pioneering palynostratigraphic zoning by Daemon and Quadros (1970): a benchmark in stratigraphic knowledge in the Parana Basin; O pioneirismo do zoneamento palinoestratigrafico de Daemon e Quadros (1970): um marco no conhecimento estratigrafico da Bacia do Parana

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    Souza, Paulo Alves de [Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS (Brazil). Inst. de Geociencias. Dept. de Paleontologia e Estratigrafia]. E-mail: paulo.alves.souza@ufrgs.br; Milani, Edison Jose

    2006-11-15

    This paper presents an analytical view of the palynostratigraphy of the Pennsylvanian-Permian interval of the Parana Basin, emphasizing the importance of the contributions by R. F. Daemon and L. P. de Quadros, published in 1970. The main characteristics of this zonal scheme are presented, with emphasis on its operability in geological studies on the relative ages and correlation. The proposed intervals correspond to stratigraphical units interpreted as meaning 'time-rock', which are traceable for short and long distances, and embracing various depositional environments. Because they occur in distinct lithostratigraphical units, they are significant for their potential in paleogeographic reconstructions. The importance in stratigraphical chart constructions for the basin is highlighted, as well as the exposure of some modern stratigraphic concepts used by the authors, innovations at that time, such as the attention to certain biostratigraphic criteria and the recognition of the maximum flooding surfaces. The current zonal scheme is presented, with the due integration and bio chronostratigraphic updating. Furthermore, the main goals for studies on this theme in the near future are shown. (author)

  15. Study of ceramics from circular archaeological sites of Amazonic Basin by geochemical methods: dating and characterization; Estudo de ceramicas de sitios arqueologicos circulares da Bacia Amazonica por meio de metodos geoquimicos: datacao e caracterizacao

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    Nicoli, Ieda Gomes

    2000-09-01

    The aim of this work is to examine by means of characterization and dating pottery recently discovery inside archaeological sites recognized with circular earth structure in Acre State - Brazil which may contribute to the research in the reconstruction of part of the pre-history of the Amazonic Basin. These sites are located mainly in the Hydrographic Basin of High Purus River. Three of them were strategic chosen which provide the ceramics: Lobao, in Sena Madureira County at north; Alto Alegre, in Rio Branco County at east and Xipamanu I, in Xapuri County at south. The X-ray diffraction mineral analysis made possible to identify two types of crystal structures of ceramic minerals: quartz and M-Kaolinite. Neutron activation analysis in conjunction with multivariate statistical methods were applied for the ceramic characterization and classification. An homogeneous group was established by all sherds collected from Alto Alegre and was distinct from all the other two groups analyzed. Some of the sherds collected from Xipamanu I appeared in Lobao's urns, probably because they had the same fabrication process. The Lobao's urns presented a homogeneous group. Geochronology of these materials was carried out by Thermoluminescence. The Xipamanu I was the oldest site and Lobao the youngest. The average age of Xipamanu I and Alto Alegre were 2600 and 2070 years respectively. The average age of of occupation was 400 years to Alto Alegre and 970 years to Xipamanu I. The most probably date for Lobao was 1880 years. (author)

  16. Zoneamento agroclimático da cultura do café para a Bacia do Rio Doce Agriculture-climatological zoning of coffee crop for the Rio Doce Basin

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    Edson Luís Nunes

    2007-12-01

    Full Text Available Objetivou-se neste trabalho, através da geoespacialização, a identificação das regiões aptas, restritas e inaptas ao cultivo do café (Coffea arabica L. na Bacia do Rio Doce. Utilizou-se para tal, dados de temperatura e déficit hídrico de 50 estações meteorológicas instaladas na bacia e em bacias limítrofes. Os dados de déficit hídrico foram determinados utilizando o balanço hídrico segundo Thornthwaite & Mather (1955. Foram identificadas regiões equivalentes a um terço da bacia, localizadas na parte central e no nordeste da mesma, como sendo inaptas ao cultivo do café, conforme os critérios de produtividade relacionados com as exigências térmicas e hídricas da cultura.It was aimed in this work, through the geospatialization, the identification of the apt, restricted and inapt regions for cultivation of coffee (Coffea arabica L. in Rio Doce watershed. It was used for such, temperature and water deficit data of 50 meteorological stations installed in the watershed and in bordering watershed. The data of water deficit were determined using the water balance according to Thornthwaite & Mather (1955. They were identified equivalent regions the one third of the watershed, located in the central part and in the northeast of the same, as being inapt to the cultivation of coffee, according to the productivity criterions related with the thermal and hydric demands of culture.

  17. Análise fitossociológica de um remanescente de vegetação na microbacia do Córrego Criminoso (Bacia do Rio Taquari, Coxim, MS, Brasil: subsídios para a recomposição da vegetação Phytosociological analysis of a vegetation remnant in the Córrego Criminoso Basin (Taquari River Basin, Coxim District, Mato Grosso do Sul, Brazil: data for vegetation recovery studies

    Directory of Open Access Journals (Sweden)

    Adriana Maria Güntzel

    2011-09-01

    Full Text Available O objetivo deste estudo foi realizar a análise florística e fitossociológica preliminar em um remanescente de vegetação na área de entorno do Córrego Criminoso, visando subsidiar futuros projetos de recomposição da vegetação. A área total do remanescente foi determinada com o auxílio de GPS e dos programas Pathfinder e Autocad. Amostragens de indivíduos com CAP maior ou igual a 20 cm foram realizadas em 20 parcelas de 300 m² distribuídas na área. Foram encontradas 26 famílias botânicas contendo 36 gêneros e 49 espécies. A família Leguminosae foi a mais rica em espécies, seguida da família Annonaceae. A espécie Xylopia aromatica foi a mais freqüente, apresentando valores de IVI e IVC de 99,77 e 85,73, respectivamente. Observou-se que mais de 50% das espécies presentes na área são pioneiras ou secundárias, sendo cinco consideradas típicas de matas ciliares: Tapirira guianenses, Cecropia pachystachya, Terminalia argentea, Ocotea pulchellae e Luehea grandiflora. O remanescente de vegetação do entorno do Córrego Criminoso encontra-se fortemente degradado, necessitando de ações de manejo específicos nos fragmentos vegetados e nas áreas destituídas de vegetação, cujas recomendações são propostas.The aim of this study was to complete a preliminary, floristic, phytosociological analyses of a vegetation remnant in the Criminoso Stream Basin, in order to provide data for future projects focusing on vegetation recovery. The total area of the remnant was determined using a GPS and the software Pathfinder and Autocad. Samples of individuals larger or equal to 20 cm CBH were made in 20 quadrats that were 300 m². Thirty-six genera and 49 species, within 26 botanical families, were found. The family Leguminosae was the richest in species, followed by the Annonaceae. Xylopia aromatica was the most frequent species, presenting values of IVI and IVC of 99.77 and 85.73, respectively. More than 50% of the species present

  18. Great Basin insect outbreaks

    Science.gov (United States)

    Barbara Bentz; Diane Alston; Ted Evans

    2008-01-01

    Outbreaks of native and exotic insects are important drivers of ecosystem dynamics in the Great Basin. The following provides an overview of range, forest, ornamental, and agricultural insect outbreaks occurring in the Great Basin and the associated management issues and research needs.

  19. Melo carboniferous basin

    International Nuclear Information System (INIS)

    Flossdarf, A.

    1988-01-01

    This report is about of the Melo carboniferous basin which limits are: in the South the large and high Tupambae hill, in the west the Paraiso hill and the river mountains, in the North Yaguaron river basin to Candidata in Rio Grande del Sur in Brazil.

  20. Gradientes de diversidade nas comunidades de peixes da bacia do rio Iguatemi, Mato Grosso do Sul, Brasil Diversity gradients in fish communities of Iguatemi river basin, Mato Grosso do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Yzel Rondon Súarez

    2006-06-01

    Full Text Available Com o objetivo de verificar a importância da variação longitudinal, sazonal e a influência das características físicas e químicas da água sobre a diversidade de espécies de peixes realizamos amostragens trimestrais, entre Novembro/1999 e Agosto/2000, em três pontos amostrais no rio Jogui e oito pontos amostrais no rio Iguatemi-MS. A variação longitudinal foi mais importante que a variação sazonal na determinação da riqueza e número de indivíduos no rio Jogui, no entanto, a equitabilidade não apresentou diferença significativa sazonal ou longitudinal. No rio Jogui 78,3% da variação na riqueza de espécies, 81,6% no número de indivíduos e 41,1% na equitabilidade foram explicadas pelas características físicas e químicas da água. No rio Iguatemi nós não detectamos diferenças estatisticamente significativas longitudinais ou sazonais nos descritores analisados das comunidades nem influência significativa dos fatores ambientais.In order to verify the importance of longitudinal and seasonal variations and the effect of physical and chemical water characteristics to fish species diversity we accomplished three-month samplings, between November/1999 and August/2000, in three selected points in the Jogui River and eight points in the Iguatemi River-MS. The longitudinal variation was more important than seasonal variation in determining richness and number of individuals in the Jogui River, however, evenness did not present statistically significant differences either longitudinal or seasonal. In the Jogui River 78.3% of species richness, 81.6% of number of individuals and 41.1% of evenness variation was explained by the water chemical and physical characteristics. In the Iguatemi River we did not detect longitudinal or seasonal statistically significant differences in the analyzed community descriptors nor significant influence of environmental factors.

  1. K Basin safety analysis

    International Nuclear Information System (INIS)

    Porten, D.R.; Crowe, R.D.

    1994-01-01

    The purpose of this accident safety analysis is to document in detail, analyses whose results were reported in summary form in the K Basins Safety Analysis Report WHC-SD-SNF-SAR-001. The safety analysis addressed the potential for release of radioactive and non-radioactive hazardous material located in the K Basins and their supporting facilities. The safety analysis covers the hazards associated with normal K Basin fuel storage and handling operations, fuel encapsulation, sludge encapsulation, and canister clean-up and disposal. After a review of the Criticality Safety Evaluation of the K Basin activities, the following postulated events were evaluated: Crane failure and casks dropped into loadout pit; Design basis earthquake; Hypothetical loss of basin water accident analysis; Combustion of uranium fuel following dryout; Crane failure and cask dropped onto floor of transfer area; Spent ion exchange shipment for burial; Hydrogen deflagration in ion exchange modules and filters; Release of Chlorine; Power availability and reliability; and Ashfall

  2. Cetaceans occurrence visual monitoring during seismic survey in the North of Campos Basin; Monitoramento visual de ocorrencia de cetaceos durante o levantamento de dados sismicos no norte da Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Flor, Karina C.A.; Amaro, Thays P.C.; Carloni, Giuliano G. [Ecologus Engenharia Consultiva, Rio de Janeiro, RJ (Brazil); Uller, George A. [CGGVeritas, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The objective of this research is to present the results of the marine biota visual monitoring developed during the seismic survey in the north area of Campos Basin. The monitoring lasted five months, between 14 February and 14 July 2007, reaching, on average, eleven hours and fifty one minutes of sign effort per day. It was conducted by fourteen marine biota catch sign, three for each period of boarding, that took over during all period of the activity. Sixty two cetaceans were registered, eight belonging to suborder Odontoceti and four belonging to suborder Mysticeti. Tursiops truncatus was the predominant species in number of registers, followed by Megaptera novaeangliae. It's important to report that during all seismic activity period there wasn't any cetacean register presenting any behavior disturbance. (author)

  3. Composição molecular e origem paleobotânica de âmbares da bacia do Araripe, Formação Santana Molecular composition and paleobotanical origin of ambers from the Araripe basin, Santana Formation

    Directory of Open Access Journals (Sweden)

    Ricardo Pereira

    2009-01-01

    Full Text Available The terpenoid composition of seven amber samples from Araripe Basin (Santana Formation, Crato Member has been analyzed by gas chromatography-mass spectrometry to determine their botanical origin. The diterpenoids, which have been identified in the fossil resin extracts are derived primarily from the abietane class, e.g., dehydroabietane, 4-epidehydroabietol, 16,17,18-trisnorabieta-8,11,13-triene, 7-oxo-16,17,19-trisnorabieta-8,11,13-trieno, dehydroabietic acid, ferruginol, hinokiol and hinokione. Their composition is certainly typical for conifers, and angiosperms can be excluded as the botanical source, as no triterpene was identified. The terpenoid characteristics strongly support a relationship to the Araucariaceae or Podocarpaceae families. In addition, the fossil record of the embedding sediments (pollen and fossil leaves also supports the proposal of these paleobotanical origins for the ambers.

  4. Seismic-geometric facies model of lacustrine carbonates of Morro do Chaves Formation, Sergipe-Alagoas Basin; Modelagem sismica-geometrica de facies dos carbonatos lacustres da Formacao Morro do Chaves, Bacia de Sergipe-Alagoas

    Energy Technology Data Exchange (ETDEWEB)

    Kinoshita, Eliseu Massaaki [Internacional America Latina PETROBRAS Colombia (Colombia). E e P. UN-COL. Gerencia de Ativos Offshore], e-mail: eliseuk@petrobras.com.br

    2010-05-15

    Sergipe-Alagoas Basin, to the seismic facies of a high-resolution seismic section (out thrust-1) from the same outcrop This model was based on the interaction of three models: the Integration Facies Model; Stratigraphic- Structural Facies Model and Velocity Facies Model. The first relates the gamma-rays, sonic velocity, porosity and geometry information with the kinds of facies associations. The second is the result of the integration of the first model with the outcrop 3-D Laser-scanner topographic image and the structural geometric observations. The last is the representation of the substitution of the facies associations of the second model for their respective sonic velocities. This last model was the input parameter to the 2-D acoustic model, which produced a synthetic seismic section of the outcrop of a similar standard to the high-resolution section of out thrust-1. The out thrust-1 high-resolution seismic section interpretation, based on the Seismic-Geometric Facies Model, demonstrated that the facies associations found in the shallow drill hole S-217 and well FU-107, both 50m from the seismic line, correlate in the same seismic-stratigraphic level. More importantly, the geometries of the seismic facies found in the stratigraphic and structural positions were consistent with those observed in the outcrop geological structural analysis. This evidence indicates that the seismic model of the coquinas outcrop, Morro do Chaves Formation, may be used as an analogue model in hydrocarbon exploration and production activities, particularly in the coquinas facies reservoirs of the Lagoa Feia Formation, Campos Basin. (author)

  5. Water isotopic characterization of hypersaline formation of a petroleum field Reconcavo basin, Brazil; Caracterizacao isotopica de aguas de formacao hipersalinas de um campo de petroleo da Bacia do Reconcavo, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Teles, Danilo Ribeiro de Sa; Azevedo, Antonio Expedito Gomes de, E-mail: danilosateles@yahoo.com.br, E-mail: expedito@ufba.br [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Inst. de Fisica. Centro de Pesquisa em Geofisica e Geologia; Santos, Christian Pereira Lopes dos, E-mail: cplsgs@gmail.com [Instituto Federal Baiano, Salvador, BA (Brazil)

    2010-04-15

    Formation water is the water present in reservoir rock pores, produced together with petroleum. Usually it is hyper saline with concentrations that can be higher than 250 g/l of dissolved solids. The concentration of the dissolved elements and the isotopic composition of the water and of some of the dissolved elements can be excellent tracers to study the dynamic of underground fluid flux, the mixing of distinct sources and the origin of salinization of these waters. This work reports the isotopic composition ({delta}{sup 2}H , {delta}{sup 18}O) and electrical conductivity (EC) of formation waters from 10 wells of a petroleum field of the Reconcavo Basin, looking for their evolution, interaction with the minerals and rocks and reservoir interconnection. The samples have electric conductivity ranging from 84 to 137 mS/cm, with conductivity increasing with depth of production zone. It is observed an enrichment of deuterium and oxygen-18 with the depth of production zone, probably due to water-rock interactions that were probably increased by higher temperatures of the deeper levels and longer residence times. The samples from the production zone between 1450 to 1520 m, drained by 7 of the 10 wells sampled, show a small range in isotopic composition and in electric conductivity, indicating homogeneity in this level of the reservoir. In the shallow level of 450 m the values of {delta}{sup 2}H , {delta}{sup 18}O and EC are lower, with isotopic composition similar to the oceanic water, possibly representing the original water that entered the reservoir during the sedimentation of the basin. (author)

  6. Geoprocessing applied to physiographic characterization of the Lontras River Basin - Paraná, Brazil | Geoprocessamento aplicado à caracterização fisiográfica da Bacia do Rio Lontras - Paraná, Brasil

    Directory of Open Access Journals (Sweden)

    Isaque de Souza Mendes

    2016-06-01

    Full Text Available The morphometric characterization is considered an important tool in the management of river basins, and it provides relevant information to decision making by managers who are associated with the geographic divisions. The use of Geographic Information Systems (GIS and remote sensing tools, widespread in monitoring and spatial analysis, is characterized as a facilitator component in the search for characterization and identification of factors which influence the geomorphometric parameters of the territory. The current spread of geoprocessing and GIS in general, culminate in a wide availability of storage systems and computer programs for data processing and conversion. Based on the above, this study aimed to morphometric and rainfall characterization of the Salto do Lontra watershed, which covers the municipalities of Salto do Lontra and Nova Esperança do Sudoeste located in West Region of Paraná State, Brazil, using the software Qgis 2.14. In this regard, the Digital Elevation Model (DEM was used with a spatial resolution of thirty meters, provided by the National Institute for Space Research and historical precipitation data provided by the Paraná Water Institute. Through the MDE an altimetric data correction was performed obtaining a Hydrologically Consistent Digital Elevation Model (HCDEM, in which were obtained by manipulating data in a GIS environment, physical variables to determine the morphometric parameters. The results demonstrated that the Salto do Lontra watershed has a drainage area of 177.54 km² and a perimeter of 99.29 km. The compactness coefficient obtained was 2.09, the form factor 0.19 and circularity index 0.23, indicating that the basin has elongated shape and low propensity to flooding. The drainage density was 0.85 km.(km²-1, time of concentration 535.59 min. and sinuosity index of 40.57%. In addition, the data obtained in this study indicated that the average annual precipitation was 1896.85 mm, watching orographic

  7. Kinematic reconstitution and tectono-sedimentation associated to salt domes in deep water of Santos basin, Brazil; Reconstituicao cinematica e tectono-sedimentacao associada a domos salinos nas aguas profundas da bacia de Santos, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Caldas, Manuela Fernandes [PETROBRAS E e P - Exploracao, Rio de Janeiro, RJ (Brazil). Polo Centro], E-mail: manuela.caldas@petrobras.com.br; Zalan, Pedro Victor [PETROBRAS E e P - Exploracao, Rio de Janeiro, RJ (Brazil). Gestao de Projetos Exploratorios], E-mail: zalan@petrobras.com.br

    2009-05-15

    This article presents new methods for structural restoration and kinematic evolution of salt domes during the opening stages and growth of a passive margin in the Santos Basin. The traditional method or restoration of salt bodies uses software and a 3D database. Using 2D seismic data and adapting/improving methods published in the oil industry literature, we developed a method based on the observation of the stratal geometric patterns of sedimentary packages associated to the salt bodies such as tabular forms (straight parallel reflectors, pre or post-tectonic sedimentary sequences), or dish/bowl forms (with very distinct depocenters and thinned margins with fanning of dips, syntectonic/halokinetic sedimentary sequences), and on the determination/mapping of growth axes and thinning axes in halokinetic strata. Horizontal and vertical reconstitutions of the salt flow (inflation, deflation and horizontal flow) were deduced based on isochron (isopach maps in time) and axes maps and flattened seismic sections at the time of deposition of each associated sedimentary sequence. The resulting maps and reconstitutions presented an amazing correlation with the current patterns mapped in the study area. The interpreted tectonic phases of halokinetic evolution, deduced from the produced maps and reconstitutions, showed a good agreement with the regional events that affected the Santos Basin and adjoining basement. Based on those results, we believe that the application of this method provides an important contribution for the oil exploration industry, considering that it presents outstanding results based on 2D seismic data. It allows an understanding of the structural and kinematic evolution of the salt bodies and of the halokinetic sequences associated, with important implications on the modeling of petroleum systems, thus, reducing the risk of exploration prospects. (author)

  8. PRODUTOS DO INTEMPERISMO E AVALIAÇÃO DO NÍVEL DE DETERIORAÇÃO EM ROCHAS ORNAMENTAIS DA FORTALEZA DE SANTA CRUZ (NITERÓI, RJ

    Directory of Open Access Journals (Sweden)

    André Luiz Carvalho da Silva

    2012-12-01

    Full Text Available DOI 10.12957/tamoios.2012.5084RESUMO A Fortaleza de Santa Cruz, magnífico exemplo da arquitetura dos tempos da chegada dos europeus ao nosso continente, começou a ser construída por volta de 1555 na entrada da Baía de Guanabara (Niterói, RJ com blocos de gnaisse facoidal local. De modo geral, rochas empregadas em construções em ambientes litorâneos e urbanos são expostas ao sal marinho, bem como, aos poluentes CO2, S e N e, em decorrência disso, os processos relacionados ao intemperismo podem causar danos consideráveis a essas construções. Na Fortaleza de Santa Cruz foram identificados diversos tipos de crostas (negra, de sal, orgânica, “flowstones” e estalactites como produtos do intemperismo. A intensidade dos processos é diferente nos três pavimentos que compõem a Fortaleza, levando a níveis distintos de deterioração dos blocos de rocha, em função da circulação, teor de umidade e de sal no ar em cada pavimento. Palavras-chaves: intemperismo; rochas ornamentais; crosta negra; dissolução.ABSTRACT The Santa Cruz Fort, a magnificent example of architecture at the time of arrival of the Europeans to our continent, began to be constructed at about 1555 at the entrance of the Guanabara Bay (Niterói, RJ with local blocks of augen gnaiss. In general, rocks employed in constructions in coastal and urban environments are exposed to sea derived salts and pollutants such as CO2, S and N and, as consequence of that, weathering related processes can cause considerable damage to these constructions. In the Santa Cruz Fort, various types of crusts (black, salt, organic, flowstones and stalactites have been identified as weathering products. The intensity of such processes is different in the Fort’s three main floors and that leads to distinct deteriorations levels of the blocks of rock in each floor, a function of air circulation, humidity and salt content.Keywords: Weathering; building stones; black crust; dissolution. 

  9. Dieta de Bryconamericus iheringii (Ostariophysi: Characidae em riachos da bacia do rio Tibagi, Estado do Paraná - DOI: 10.4025/actascibiolsci.v28i1.1060 Diet of Bryconamericus iheringii (Ostariophysi: Characidae from streams of Tibagi river basin, Parana State - DOI: 10.4025/actascibiolsci.v28i1.1060

    Directory of Open Access Journals (Sweden)

    Maria Carolina Gomiero Oricolli

    2006-03-01

    Full Text Available Exemplares de Bryconamericus iheringii (Boulenger, 1887 coletados nos riachos Cambé, Taquari, Água da Floresta e Baroré, localizados na bacia do rio Tibagi, Estado do Paraná, foram analisados para verificar sua dieta. As coletas foram padronizadas em todos os riachos. Os conteúdos estomacais foram analisados qualitativa e quantitativamente. Verificou-se que a dieta de B. iheringii nos quatro riachos consistiu de itens alimentares que variaram em número, e os de maior importância foram: restos vegetais e detrito, no Cambé; detrito, no Taquari; algas filamentosas e restos vegetais, no Água da Floresta; detrito e restos de insetos, no Baroré. O comportamento de mudar de estratégia, de generalista para especialista, e de utilizar o item detrito, que é capturado apenas no fundo, como principal alimento, podem ser indicadores que trechos de riachos com águas mais lentas e profundas não são preferenciais para B. iheringii, como também não são para alguns grupos de insetos aquáticos que servem como seu alimentoIndividuals of Bryconamericus iheringii (Boulenger, 1887, collected in the streams of Cambé, Taquari, Água da Floresta and Baroré, which belong to the Tibagi river basin (Parana Sate, Brazil, were analyzed for the purpose of diet study. The collection procedures were standardized in every stream. The stomach contents of the individuals were analyzed qualitative and quantitatively. The food items consumed by the species varied in number, and the main food item consumed differed in each stream. Thus, it was found: vegetable remains and debris, in Cambé; debris, in Taquari; filamentous algae and vegetable remains, in the Água da Floresta; and debris and remains of insects, in Baroré stream. The behavior shift from generalist to specialist strategy as well as the use of detritus as the main food, which can only be found in the river bottom, can indicate that stretches of streams with slower and deeper waters are not preferred

  10. Variabilidade sazonal da relação entre a radiação fotossinteticamente ativa e a radiação global na bacia do rio Doce, Estado de Minas Gerais = Seasonal variability of the relationship between the photosynthetically active radiation and the global radiation at the river Doce basin, Minas Gerais State

    Directory of Open Access Journals (Sweden)

    Antonio José Steidle Neto

    2006-07-01

    Full Text Available O conhecimento da Radiação Fotossinteticamente Ativa (RFA é importante para diferentes áreas relacionadas à fisiologia vegetal e ciências agrárias. Modelos de estimativa de RFA a partir da Radiação Global (Rg são extremamente úteis, visto que a Rg é convencionalmente medida nas estações meteorológicas. Assim, analisou-se a variabilidade sazonal da relação RFA/Rg em cinco áreas localizadas na bacia do rio Doce, Estado de Minas Gerais, considerando-se os períodos secos e chuvosos dos anos de 2001 a 2004. As relações RFA/Rg obtidas para os períodos secos e chuvosos, assim como para todos os dados, apresentaram concordância com as relações determinadas por diversos pesquisadores em diferentes áreas do mundo. Analisando-se os resultados, constatou-se que, de maneira geral,as relações RFA/Rg tendem a ser superiores durante os períodos chuvosos comparativamente aos secos. Por este estudo, pôde-se concluir que existe variação interanual desta relação, demonstrando assim a necessidade de se considerar esta variabilidade para estimaradequadamente a RFA a partir da Rg. The knowledge of the Photosynthetically Active Radiation (PAR is important to different areas of vegetal physiology and agricultural sciences. Estimation models of the PAR based on the Global Radiation (GR are extremely useful, since the GR is conventionally measured atthe meteorological stations. Thus, the seasonal variability of the relationship PAR/GR was analyzed in five areas located at the river Doce basin, Minas Gerais State, Brazil, considering the dry and wet periods of the years 2001 to 2004. The relationships PAR/GR obtained for the dry and wet periods, and also to all data, presented agreement with those ones determined by several researchers in different areas of the world. Results showed that the relationshipsPAR/GR generally tend to be greater during the wet periods when compared with the dry ones. By this work, it could be concluded that

  11. Wada basin boundaries and basin cells

    NARCIS (Netherlands)

    Nusse, H.E.; Yorke, J.A.

    1996-01-01

    In dynamical systems examples are common in which two or more attractors coexist, and in such cases the basin boundary is nonempty. We consider a two-dimensional diffeomorphism F (that is, F is an invertible map and both F and its inverse are differentiable with continuous derivatives), which has at

  12. Compartimentação geomorfológica da bacia hidrográfica do rio Itu – Oeste do Rio Grande do Sul - Brasil / Geomorphological Compartmentation the Itu River Basin – West of Rio Grande do Sul - Brazil

    Directory of Open Access Journals (Sweden)

    Romario Trentin, ,

    2012-04-01

    Full Text Available A geomorfologia utiliza a identificação das formas de relevo, por meio de estudo de sua origem, estrutura, natureza das rochas, clima e dos fatores endógenos e exógenos responsáveis pelo modelado ou formação de determinados elementos da superfície terrestre. Neste sentido, estabeleceu-se uma proposta de compartimentação geomorfológica da bacia hidrográfica do Rio Itu. Como base metodológica do trabalho, utilizou-se a proposta de Ross (1990, 1992, os mapas e as discussões apresentadas por Robaina et. al (2010 no estudo da bacia hidrográfica do Rio Ibicui. No levantamento cartográfico, adotaram-se cartas topográficas 1:50.000, imagens de satélite e trabalhos de campo. Foram determinados os atributos da rede de drenagem, as características do relevo, o substrato geológico e os tipos de solos. A integração dos dados e a compilação dos mapas permitiram a definição dos diferentes níveis taxonômicos. Nos três primeiros níveis de compartimentação, utilizou-se, como base, a bacia hidrográfica do Rio Ibicuí. A partir do quarto nível taxonômico, estabeleceram-se as unidades geomorfológicas especificamente para a bacia hidrográfica do Rio Itu (BHRI, onde foram definidas oito unidades de formas de relevo: Colinas de arenito, Morrotes de arenito, Cornijas de arenito, Rampa alúvio colúvio, Colinas vulcânicas de topo plano, Relevo escarpado, Morrotes de rocha vulcânica e Colinas de rocha vulcânica. No quinto e sexto níveis, são apresentadas as formas das vertentes e as feições características das unidades de relevo, sendo mais frequentes as curvaturas retilíneo-convergentes e as feições de areias e voçorocas. A análise geomorfológica apresenta elementos fundamentais ao gerenciamento do meio e, portanto, é uma ferramenta indispensável ao planejamento ambiental.

  13. First studies of lead pollution in Guanabara

    International Nuclear Information System (INIS)

    Silveira Branquinho, C.L. da.

    1973-01-01

    The main sources of direct lead intake are studied, and metal concentrations in several medium are examined. Lead was extracted by dithizone in C Cl 4 , being determined by optical spectrophotometry. 2 1 2 Pb was used as a radioactive tracer in low concentration measurements of the metal, and analysis of its 239 KeV peak was done by a Ge-Li detector. In blood samples, the metal was complexed and extracted with APDC in MIBK, being measured by flame less atomic absorption spectrophotometry. Air samples were also collected for periods of 24 hours and 90 minutes. Representative street dust samples were examined, showing a strict correlation with lead in air. It was also estimated the amount of lead in some human blood samples. (author)

  14. An evaluation eMergetics of Itacoatiara's city in the central Amazon, their plywood, and cultivated plain of basin of Madeira's river; Uma avaliacao eMergetica da cidade de Itacoatiara na Amazonia Central, sua industria de compensado e laminado e a varzea da bacia do rio Madeira

    Energy Technology Data Exchange (ETDEWEB)

    Comar, Vito

    1994-12-01

    The plywood production system of Itacoatiara's industry and the wooden extraction impact of cultivated plain of basin of Madeira's river are presented. The incorporated energy flows - eMergy are evaluated by the models mathematical simulation, which applies to specific indices derivation aiming at the comparison with other similar processes. Itacoatiara's city was going analyzed regarding the industry load energetics and of others urban components.

  15. Radionuclides distribution in blooming of the permian sediments from the Irati Formation of the Parana Basin; Distribuicao de radionuclideos em um afloramento de sedimentos permianos da Formacao Irati na Bacia do Parana

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Ademar de Oliveira

    2008-02-15

    The objective of this work is to study natural radionuclides in sedimentary rocks. The concentration of them reflects the origin of the sediments, the depositional environment as well as some mineralogical characteristics of the rock matrix, and also more recent events as weathering and erosion. Using gamma ray high resolution spectrometry, the profile of activity concentration of the natural radionuclides was assessed for {sup 226}Ra, {sup 238}U, {sup 32}Th and {sup 40}K in rocks of the Irati Formation belonging to Parana Sedimentary Basin. The samples were collected at a limestone abandoned mine, in the city of Sapopema, (PR). 24 samples were collected, eleven from the exposed vertical profile with approximately 5.50 m, whose stratigraphy is represented by an alternation among decimetrics layers of limestones, bituminous shales, and some rhythmits layers (milimetric sheets of limestone and bituminous shales), 9 repetitions of a sample to study the variability, and three rigolits samples in sequential apprenticeships of weathering. Each sample was dried in the sun during about 48 hours, broken, drizzled in a sieve of 4 mesh and put, in a cylindrical container. The measures were accomplished using a Germanium Hyper Pure detector (HPGe) with relative efficiency of 66%, connected to a standard spectrometry electronic chain. The measured concentrations of activity of {sup 238}U were smaller for the limestones (17.80 {+-}0.09 Bq.Kg{sup -1}), larger for the bituminous shales (125.5 {+-} 2.6 Bq.Kg{sup -1} with enrichment of uranium in the sample (200), 548 {+-} 16 Bq.Kg{sup -1}, upper part of the column), and intermediate for the rhythmits (23.0 {+-} 1,3 Bq.Kg{sup -1}. The ratio eTh/K obtained for the studied profiles has equivalent values, indicating similar mineralogical characteristics for the limestones, bituminous shales, rhythmits and studied rigolits. On the other hand, to the ratio eTh/eU showed that two of the three regolits samples belong to oxidizer

  16. Avaliação da qualidade ambiental urbana da bacia do ribeirão do Lipa através de indicadores, Cuiabá/MT / Assessment of urban environmental quality in the basin of the Ribeirão Lipa through indicators, Cuiabá/MT

    Directory of Open Access Journals (Sweden)

    Jacqueline Kayser Alkmim

    2011-04-01

    Full Text Available O crescimento e adensamento populacional nas cidades têm aumentado a importância da qualidade dos espaços urbanos, e diante desse tema este artigo busca realizar a avaliação da qualidade ambiental da área urbana da sub-bacia do Ribeirão do Lipa, localizada na cidade de Cuiabá/MT, usando como referência os modelos de avaliação do ambiente urbano baseados em indicadores ambientais e de infraestrutura sanitária e viária, aos quais foram atribuídos pesos de acordo com a sua relevância para o estado de qualidade meio urbano. O trabalho foi desenvolvido na parte urbana da sub-bacia do Ribeirão do Lipa, que é uma das mais preservadas dentre aquelas inseridas no perímetro urbano de Cuiabá e passa nos últimos anos por severo processo de urbanização.

  17. Geometry of the proximal part of the modern turbidite depositional system of the Carapebus Formation, Campos Basin: a model for reservoir heterogeneities; Geometria da porcao proximal do sistema deposicional turbiditico moderno da Formacao Carapebus, Bacia de Campos; modelo para heterogeneidades de reservatorio

    Energy Technology Data Exchange (ETDEWEB)

    Machado, Luis Claudio Ribeiro; Kowsmann, Renato Oscar; Almeida Junior, Waldemar de; Murakami, Celso Yoshihito; Schreiner, Simone; Miller, Dennis James; Piauilino, Pedro Orlando Vasconcelos [PETROBRAS, Rio de Janeiro, RJ (Brazil). Exploracao e Producao. Unidade de Servico Submarino]. E-mail: machadolc@petrobras.com.br

    2004-11-01

    The deep-water marine sedimentary environment of the Cenozoic of the Campos Basin is examined at the modern sea floor, where it can be better understood. This environment is responsible for the genesis of the turbidite systems of the Carapebus Formation, the reservoirs that hold more than 90% of Brazil's petroleum reserves. The study was developed with the records of regional side-scan sonar, swath bathymetry, sub-bottom profiler data, standard multichannel 3D seismic surveys and piston cores covering almost the entire basin. After leaving the Almirante Camara Canyon, the turbiditic flows erode the muddy debris apron surrounding the continental slope and begin to deposit thick layers of clean sand into a big trough in water depths of 1800 m to 3000 m. The trough is 3.5 km wide, 150 m deep, 150 km long, and is formed by a chain of salt withdrawal mini-basins. In some places the sea floor is flat enough to develop today a depositional lobe, in all aspects analogous to the best, geologically ancient petroleum reservoirs in the basin. Aspects of the system: 1) the arcosean sands are brought by the river, cross the shelf, the incised valley, the canyon, and deposit as turbidites - they do not originate from a collapse of the continental slope; 2) a wide muddy debris apron surrounds the continental slope (slope apron), and represents a huge volume of sediment in the Campos Basin ; 3) the turbidites do not develop a submarine fan, but are deposited in an elongated trough formed by salt tectonics; 4) the turbidite beds, both in the lobe or in the trough, are not deposited during a single episode, but in multiple events over significant geologic time in which small channels which brought the turbidites avulse and meander along the entire depositional area, building a single amalgamated bed; 5) classic channel-levees are not present because this system comprises a sandy braid plain and the levees are as sandy as the channel; 6) a hierarchical depositional model for bulb

  18. Sonic profile simulation from the profiles of gamma ray and resistivity in the wells from Campos Basin; Simulacao do perfil sonico a partir dos perfis de raios gama e de resistividade em pocos da Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Leite, Marcos, E-mail: marcosviniciuscl@gmail.com [PETROBRAS, E e P - SERV/US - PO, Macae, RJ (Brazil); Carrasquilla, Abel, E-mail: abel@lenep.uenf.br [Laboratorio de Engenharia e Exploracao de Petroleo, Universidade Estadual do Norte Fluminense Darcy Ribeiro (LENEP/UENF), Macae, RJ (Brazil); Silva, Jadir da [Instituto de Geociencias, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ (Brazil)

    2008-04-15

    The knowledge of the mechanical properties of the rocks is essential in the calculation of the stability of the oil wells and in the elaboration of drilling projects, because they help in the selection of the best equipment for each geologic scene. In these activities, the most important mechanical property is the rock compressibility, which can be calculated from the sonic geophysical log, but this one, not always available in the well data set. In order to minimize this limitation, it was developed, in this work, a methodology to simulate it through an algorithm that utilizes fuzzy logic concepts, using as input data gamma ray and resistivity logs. The basic principle of this methodology is to propose that any geophysical log, including the sonic log, can be considered function of other measured geophysical logs in the same depths. On the other hand, to test the confidence of this approach, it was compared with two others commonly used in the simulation of logs: the linear multiple regression and the neural network back-propagation, showing, our methodology, however, better results. Finally, to validate the method, it was tested using wells from Namorado Oil Field in Campos Basin, which contains gamma ray, sonic and resistivity logs. (author)

  19. Fine-tuning the sodium hypochlorite injection system on platforms in the Campos basin - a proposal; Otimizacao do sistema de injecao de hipoclorito de sodio nas plataformas da Bacia de Campos - uma proposta

    Energy Technology Data Exchange (ETDEWEB)

    Borges Filho, Alvaro de Miranda; Motomura, Tsukasa [PETROBRAS, Rio de Janeiro, RJ (Brazil)

    2001-07-01

    Sea water serves as an important utility on the Campos Basin platforms. It is used as process cold source and is injected into the reservoir for pressure keeping porpoise. Among the many treatments suffered by the sea water, one is the disinfection by sodium hypochlorite. The sodium hypochlorite kills organic material, minimizing the threat or fouling and microbiological corrosion of the installation. Nowadays the hypochlorite injection system is based on electrically driven reciprocating dosing pumps. The systems performance is acquired by redox potential monitors or by chemical analysis kits, that measure the hypochlorite residual in the sea water system. Whenever a low residual value is identified a manual action for change the injection rate of the dosing pumps is developed. This paper proposes a new configuration that inputs automated online actions for monitoring residual and injecting sodium hypochlorite, using variable speed electric drivers and the control function of the modern redox potential monitors. The mean advantages of the new system are: man work reduction, effective sea water system protection, and chemical injection rate optimization. The expenditure on the new system is low because it is based on vendors standard equipment, that reduces its implementation time, too. (author)

  20. A decision support system to dynamic management of the scheduling workover rigs for onshore Potiguar Basin; Um sistema de apoio a decisao para o gerenciamento dinamico das sondas de producao terrestre da Bacia Potiguar

    Energy Technology Data Exchange (ETDEWEB)

    Maia, Rosiery S.; Bittencourt, Valnaide [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Dept. de Engenharia da Computacao e Automacao (DCA); Aloise, Daniel [Pontificia Univ. Catolica do Rio de Janeiro (PUC-Rio), RJ (Brazil). Dept. de Informatica; Aloise, Dario J. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil); Moura, Luiz S.S. [PETROBRAS S.A., Natal, RN (Brazil)

    2004-07-01

    The onshore Potiguar basin has nowadays around 5.000 artificial lifting petroleum wells, distributed into 80 fields located on the states of Rio Grande do Norte and Ceara, representing approximately 8% of the national oil production. For that, well maintenance service, realized by Workover Rigs, is essential to preserve the oil productivity of the reservoirs on these fields. However, as the number of rigs is lower than to the number of wells needing maintenance, the task of administrating the management of such equipment according to the demand created by the wells, generates an optimization problem. The decision for a rig intervention on a well depends on parameters such as flow rate, depth, wasted time on intervention, distance from the rig to the next well, type of operation, rig capacity, environmental risks, etc. The objective of this paper is to present an interactive Computational System for Support Decision to the optimized management of the wells attended by the rig fleet. Generically, the software has the following components: dynamic heuristical algorithms, meta heuristical Variable Neighborhood Search, with local search mechanisms, interconnection algorithm, database and graphical user interface. This paper contains knowledge in operational search and optimization, software engineering, database and user interface. (author)

  1. A comparison between three inspection techniques on a sub sea pipeline in Campos Basin; Comparacao do resultado de tres tecnicas de inspecao com pigs instrumentados em um mesmo oleoduto da Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Franzoi, Aldo Renato; Bueno, Sergio Ibaje Oliveira; Camerini, Claudio S.; Marinho, Carla; Nazario, Fabiana [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil); Freitas, Miguel; Weid, Jean Pierre von der [Pontificia Univ. Catolica do Rio de Janeiro, RJ (Brazil)

    2005-07-01

    The PPG-1/PGP-1 crude pipeline links Pargo and Garoupa platforms at the Campos Basin. Garoupa process the crude removing water and transferring it to the coast. During 10 years this pipeline had operated with more than 20% of water. In 2001, the pipeline was surveyed with a MFL pig. The results showed internal corrosion in almost the entire 22 inches pipeline concentrated on its bottom part (channeling corrosion). This type of indication has a high difficult on sizing using MFL tools. The logistic to replace the damaged pipeline was started but before that, the pipeline was surveyed with a US pig to improve the sizing of all defects. The results of the US pig confirmed the MFL report and were decided to keep all tasks in order to replace the corroded segment. At that time, a new inspection pig was under development on PETROBRAS Research Center in cooperation with PUC-Rio/CETUC. It was decided run this tool in that pipeline to compare its results against the two most common methods used for pipelines inspections. (author)

  2. California Air Basins

    Data.gov (United States)

    California Department of Resources — Air ResourcesCalifornia Air Resources BoardThe following datasets are from the California Air Resources Board: * arb_california_airbasins - California Air BasinsThe...

  3. BASINS Framework and Features

    Science.gov (United States)

    BASINS enables users to efficiently access nationwide environmental databases and local user-specified datasets, apply assessment and planning tools, and run a variety of proven nonpoint loading and water quality models within a single GIS format.

  4. Watershed Planning Basins

    Data.gov (United States)

    Vermont Center for Geographic Information — The Watershed Planning Basin layer is part of a larger dataset contains administrative boundaries for Vermont's Agency of Natural Resources. The dataset includes...

  5. CÁLCULO AUTOMÁTICO DO FATOR TOPOGRÁFICO (LS DA EUPS, NA BACIA DO RIO PARACATU AUTOMATIC CALCULATION OF THE TOPOGRAPHIC FACTOR (LS OF THE USLE, IN THE PARACATU RIVER BASIN

    Directory of Open Access Journals (Sweden)

    Valtercides Cavalcante da Silva

    2007-09-01

    Full Text Available

    Embora a equação universal de perda de solo (EUPS seja amplamente utilizada na predição de perda de solo, é difícil obter certos fatores dessa equação em bacias hidrográficas, como é o caso do fator de comprimento de vertente (fator L. Diante disso, este trabalho objetivou determinar de maneira informatizada (automática, o fator topográfico (LS da EUPS, utilizando para o cálculo do fator L o algoritmo de Desmet & Govers (1996, com o suporte de um Sistema de Informações Geográficas (SIG. Verificou-se a viabilidade do cálculo do fator de comprimento de vertente, na escala de 1:100.000, por meio da metodologia desses autores, que considera o fluxo acumulado.

    Although the Universal Soil Loss Equation (USLE is widely used all over the world in the prediction of soil loss, a few factors of the equation are difficult to obtain, such as the slope length factor (L factor, particularly in watersheds. For this reason, the purpose of the present research was to apply the methodology for automatic calculation of the topographic factor (LS factor using the algorithm developed by Desmet and Govers (1996 which defines the slope length factor (L factor through the Geographic Information System (GIS. It was verified that the slope length factor (L, as developed by Desmet and Govers (1996, which accounts for accumulated flow, showed feasible results.

    KEY-WORDS: USLE; L factor; topographic factor; GIS.

  6. K Basin Hazard Analysis

    International Nuclear Information System (INIS)

    PECH, S.H.

    2000-01-01

    This report describes the methodology used in conducting the K Basins Hazard Analysis, which provides the foundation for the K Basins Final Safety Analysis Report. This hazard analysis was performed in accordance with guidance provided by DOE-STD-3009-94, Preparation Guide for U. S. Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports and implements the requirements of DOE Order 5480.23, Nuclear Safety Analysis Report

  7. K Basin Hazard Analysis

    Energy Technology Data Exchange (ETDEWEB)

    PECH, S.H.

    2000-08-23

    This report describes the methodology used in conducting the K Basins Hazard Analysis, which provides the foundation for the K Basins Final Safety Analysis Report. This hazard analysis was performed in accordance with guidance provided by DOE-STD-3009-94, Preparation Guide for U. S. Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports and implements the requirements of DOE Order 5480.23, Nuclear Safety Analysis Report.

  8. K Basins Hazard Analysis

    International Nuclear Information System (INIS)

    WEBB, R.H.

    1999-01-01

    This report describes the methodology used in conducting the K Basins Hazard Analysis, which provides the foundation for the K Basins Safety Analysis Report (HNF-SD-WM-SAR-062/Rev.4). This hazard analysis was performed in accordance with guidance provided by DOE-STD-3009-94, Preparation Guide for U. S. Department of Energy Nonreactor Nuclear Facility Safety Analysis Reports and implements the requirements of DOE Order 5480.23, Nuclear Safety Analysis Report

  9. Bacteria diversity and microbial biomass in forest, pasture and fallow soils in the southwestern Amazon basin Diversidade de bacteria e biomassa microbiana em solos sob floresta, pastagem e capoeira no sudoeste da Amazônia

    Directory of Open Access Journals (Sweden)

    Karina Cenciani

    2009-08-01

    Full Text Available It is well-known that Amazon tropical forest soils contain high microbial biodiversity. However, anthropogenic actions of slash and burn, mainly for pasture establishment, induce profound changes in the well-balanced biogeochemical cycles. After a few years the grass yield usually declines, the pasture is abandoned and is transformed into a secondary vegetation called "capoeira" or fallow. The aim of this study was to examine how the clearing of Amazon rainforest for pasture affects: (1 the diversity of the Bacteria domain evaluated by Polymerase Chain Reaction and Denaturing Gradient Gel Electrophoresis (PCR-DGGE, (2 microbial biomass and some soil chemical properties (pH, moisture, P, K, Ca, Mg, Al, H + Al, and BS, and (3 the influence of environmental variables on the genetic structure of bacterial community. In the pasture soil, total carbon (C was between 30 to 42 % higher than in the fallow, and almost 47 % higher than in the forest soil over a year. The same pattern was observed for N. Microbial biomass in the pasture was about 38 and 26 % higher than at fallow and forest sites, respectively, in the rainy season. DGGE profiling revealed a lower number of bands per area in the dry season, but differences in the structure of bacterial communities among sites were better defined than in the wet season. The bacterial DNA fingerprints in the forest were stronger related to Al content and the Cmic:Ctot and Nmic:Ntot ratios. For pasture and fallow sites, the structure of the Bacteria domain was more associated with pH, sum of bases, moisture, total C and N and the microbial biomass. In general microbial biomass in the soils was influenced by total C and N, which were associated with the Bacteria domain, since the bacterial community is a component and active fraction of the microbial biomass. Results show that the genetic composition of bacterial communities in Amazonian soils changed along the sequence forest-pasture-fallow.Os solos da floresta

  10. Elementos traço na água e em vísceras de peixes da Bacia Hidrográfica Butuí-Icamaquã, Rio Grande do Sul, Brasil Trace elements in water and viscera of fish from Butuí-Icamaquã Basin, Rio Grande do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Luiz Carlos Santos Porto

    2009-12-01

    Full Text Available Metais pesados, também denominados elementos traço, podem ser essenciais ao metabolismo de organismos vivos, e, ao mesmo tempo, dependendo de suas concentrações, altamente tóxicos. Com o objetivo de investigar a toxicidade da água da Bacia dos Rios Butuí-Icamaquã, na fronteira oeste do Rio Grande do Sul, foram analisados, através de espectrofotômetro de absorção atômica, os teores de alumínio, cádmio, chumbo, cobre, cromo, manganês, níquel e zinco em vísceras abdominais de peixes, coletados, entre junho de 2007 e fevereiro de 2008, em pontos determinados nos rios Butuí, Icamaquã e Uruguai. Mostraram-se acima do nível considerado seguro para consumo humano: alumínio, cádmio, manganês e níquel e teores próximos aos limites legais foram encontrados para cobre e cromo. A análise simultânea de amostras da água coletadas nos mesmos locais acusou em espectrofotômetro de luz visível, níveis superiores aos limites legais de bromo, chumbo, cianeto, cobre, cromato, fenóis, fosfato, manganês e sulfeto. Estes elementos, em tais concentrações na água e nos peixes, podem comprometer o ecossistema ou representar riscos à saúde humana.Heavy metals, also called trace elements, may be essential to the metabolism of living organisms, and at the same time, depending on their concentrations, highly toxic. With the objective to investigate the toxicity of water of the Butuí-Icamaquã Rivers Basin on the border west of Rio Grande do Sul, were analyzed by atomic absorption spectrophotometer, the contents of aluminum, cadmium, chromium, copper, lead, manganese, nickel and zinc in abdominal viscera of fish, collected between June 2007 and February 2008, at selected points in Butuí, Icamaquã and Uruguai rivers. Aluminum, cadmium, manganese and nickel were above the levels considered safe for human consumption and levels near the legal limit were found for chrome and copper. The simultaneous analysis of water samples collected in

  11. Systematic approach to the treatment of crude oil produced by small concessionaires in marginal areas of the Reconcavo Basin; Abordagem sistematizada para o tratamento do oleo produzido em campos marginais da Bacia do Reconcavo por pequenos concessionarios

    Energy Technology Data Exchange (ETDEWEB)

    Lima, Edson Jorge Alves [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Dept. de Engenharia Quimica; Araujo, Marcia Queiroz de [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Faculdade de Engenharia Quimica; Ferreira, Doneivan Fernandes [Universidade Federal da Bahia (UFBA), Salvador, BA (Brazil). Dept. de Geologia e Geofisica Aplicada

    2008-07-01

    The establishment of the 'Petroleum Law' (Law No. 9.478/97) abolished the Exploration and Production State Monopoly in Brazil. Attaining concessions through the bidding rounds promoted by the Brazilian Petroleum Agency (ANP) became the only legal means for exploring and/or producing oil and natural gas in Brazil. In order to attract small and medium companies to this niche, inactive areas with marginal accumulations were offered by the Agency. These areas were returned to ANP by PETROBRAS. Currently, six small companies operate in the Reconcavo Oil Province, extracting and processing different types of oil. The available infrastructure is mostly deteriorated and obsolete. Additionally, there are serious limitations in the separation and storage capacity. This scenario resulted in the fragmentation of the old PETROBRAS production infrastructure. A possible solution to this problem could involve the establishment of a collective treatment unit which would work as a condominium. However, the operation of this plant must take into account the diversity of oils being produced in the Reconcavo Basin (physical-chemicals characteristics). This paper is aimed at (1) establishing a preliminary characterization of the different types of oil which will be delivered by local producers; (2) the critical variables for the oil model (it includes all oils received from different areas of the Reconcavo); (3) the identification of the main stake holders within this process; and (4) suggestions for operating models for the treatment unit taking into account the potential innovations and opportunities for R and D and spin-offs. (author)

  12. Retrospective of fossil dinoflagellate studies in Brazil: their relationship with the evolution of petroleum exploration in the Cretaceous of continental margin basins; Historico do estudo de dinoflagelados fosseis no Brasil: sua relacao com a evolucao da exploracao petrolifera no Cretaceo das bacias da margem continental

    Energy Technology Data Exchange (ETDEWEB)

    Arai, Mitsuru; Lana, Cecilia Cunha [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas. Gerencia de Bioestratigrafia e Paleoecologia]. E-mail: arai@cenpes.petrobras.com.br

    2004-05-01

    Palynostratigraphy of the Brazilian Cretaceous was mainly based on terrestrial palynomorphs (mostly spores and pollen grains) until the end of the nineteen eighties. This was so because, for several decades, petroleum exploration in Brazil was focused on the essentially non marine sediments of the Reconcavo Basin. During the nineteen sixties, PETROBRAS extended oil exploration to the Brazilian continental shelf (offshore areas). Nevertheless, at that time the company did not invest immediately in marine palynostratigraphy, because it was believed that bio stratigraphic schemes based on foraminifera and calcareous nanno fossils would be more efficient than palynology in marine sequences. This belief changed only in the seventies, when commercial oil reservoirs were discovered in the Campos Basin, within the Macae Formation, a rock unit deposited in a carbonate shelf environment. Its environmental conditions were certainly hostile to the development and post-mortem preservation of foraminifera and calcareous nanno fossil-producing algae. As a result, no more than two or three bio zones could be identified in the Macae carbonate section on the basis of such organisms. Besides, carbonate shelf sediments, subject to only minor terrigenous input, are usually poor in terrestrial palynomorphs. On the other hand, the palynological content of some Macae strata consists mainly (up to 100%) of such marine palynomorphs as dino flagellates, acritarchs e palynoforaminifera. Consequently, PETROBRAS recognized the importance of developing a zonal framework based on these organisms. The first Cretaceous dinoflagellate zonation in Brazil was erected in 1976, and since the nineteen eighties, marine Cretaceous palynostratigraphy has made significant advances mainly due to the use of dino flagellates. Hundreds of Cretaceous dinoflagellate index species have been introduced into PETROBRAS databanks, becoming widely applicable to the bio stratigraphy of all Brazilian continental margin

  13. Prospecção hidrobiológica da Baía de Sepetiba Color and transparence of waters of Sepetiba Bay, in Rio de Janeiro State

    Directory of Open Access Journals (Sweden)

    Lejeune P. H. de Oliveira

    1971-01-01

    Full Text Available Côr das águas de Sepetiba; as pròpriamente marítimas, pela Escala de Forel e as outras côres aparentes totais feitas por comparação com escalas de SÉGUY e com o Dicionário de Côres de MAERZ & PAUL, 1950. Côr Forel nº6 mostrava no litoral cirrípedes como a Tetraclita squamosa, nas rochas; Águas com a cianofícea planctônica Trichodesmium erythraeum tinham côr de "fôlha de bananeira" ou alpine green. O verde esmeralda mais intenso no local 7, com plancto maciço da diatomácea Coscinodiscus; a parte central da Baía com 150 [quilometros quadrados], cheia de larvas de camarão Penaeus schmidti, águas de cõr de ferrugem nas superfícies das águas; os estuários côr caramelo, isabellinus e bistre. Êste levantamento preliminar serve para comparações futuras, pois a Baía de Sepetiba ainda não é poluída. Futuramente haverá um pôrto de minérios com 3.000.000 de toneladas anuais, cais do pôrto, siderúrgicas e outras indústrias que a poluirão. Várias cõres de águas poluídas da Baía de Guanabara, como águas negras, águas côr de asfalto e outras escurecidas não foram encontradas em Sepetiba. Também não foram encntradas "águas vermelhas" com plancto predominante de dinoflagelados do que já vimos na Baía de Guanabara seguidos de mortandadas de peixes. A fig. 3 mostra as curvas de transparência, e a relação entre côr e transparência é dada para as côres totais aparentes. Foi marcado o coeficiente de extinção da luz K, pelo cálculo a partir do Disco de Secchi. Havendo poluições todos êsses dados que apresentamos deverão ser alterados.The apparent total color of sea by comparison with samples tested by "MAERZ & PAUL: A Dictionary of Colors, 1950". We find green colors of Forel Scale: Forel n. 5 in waters with Pheophyceae, Sargassum, and Rhodophyceae; Forel n. 6 waters in stones with the Cirripedia, the barnacle Tetraclita squamosa; the alpine green in waters with Trichodesmium exuthraeum. Emerald

  14. Levantamento florístico do componente arbustivo-arbóreo da vegetação ciliar na bacia do rio Taperoá, PB, Brasil Floristic survey of components of shrub-tree riparian vegetation in the Taperoá river basin, Paraíba State, Brasil

    Directory of Open Access Journals (Sweden)

    Alecksandra Vieira de Lacerda

    2005-09-01

    Full Text Available Considerando o papel relevante e o nível de degradação presente nas áreas ciliares, a pesquisa objetivou estudar a composição florística do componente arbustivo-arbóreo da vegetação ciliar em diferentes ambientes hídricos do semi-árido paraibano na bacia do rio Taperoá. O levantamento florístico foi realizado no período de junho/2002 a fevereiro/2003 e abrangeu nove pontos distribuídos ao longo de rios, riachos, lagoa e açude. A definição das atividades apoiou-se em análise de cartas e mapas da vegetação em escala de 1:100.000 e caminhadas aleatórias que permitiram a realização de coleta de material vegetal, utilizado para identificação por meio de consultas a especialistas e de morfologia comparada, usando bibliografia especializada e análise das exsicatas depositadas no herbário Lauro Pires Xavier - JPB (UFPB, João Pessoa, PB. A vegetação arbustivo-arbórea da mata ciliar nos nove pontos amostrados foi representada por 43 espécies, das quais 41 são pertencentes a 19 famílias, e duas espécies permaneceram indeterminadas. As famílias que apresentaram o maior número de espécies foram Mimosaceae (sete, Caesalpiniaceae (cinco e Euphorbiaceae (cinco. Os resultados da análise de agrupamento indicaram que as áreas ciliares apresentaram certa particularização em termos de composição florística, o que se refletiu nos baixos índices de similaridades entre o conjunto de áreas amostradas.Considering the relevant role and the current level of degradation of riparian areas, this work aimed to study the floristic composition of shrub-tree riparian vegetation at different hydric environments in the Taperoá river basin, in the semi-arid region of the Paraíba State, Northeast Brazil. The survey was performed from June 2002 to February 2003. Nine sampling sites were distributed along rivers and streams, and around lagoon, and dam. The definition of activities was based on the analysis of charts and vegetation maps

  15. Biologia reprodutiva e reprodução induzida de duas espécies de Characidae (Osteichthyes, Characiformes da bacia do São Francisco, Minas Gerais, Brasil Reproductive biology and induced breeding of two Characidae species (Osteichthyes, Characiformes from the São Francisco River basin, Minas Gerais, Brazil

    Directory of Open Access Journals (Sweden)

    Yoshimi Sato

    2006-03-01

    Full Text Available Astyanax bimaculatus (Linnaeus, 1758 e Tetragonopterus chalceus Spix & Agassiz, 1829 são duas importantes espécies de peixes forrageiros da bacia do São Francisco. Espécimes destas duas espécies foram submetidos à indução da desova através de hipofisação, para observação de aspectos reprodutivos e obtenção de subsídios para definição de protocolo de reprodução artificial. Machos e fêmeas receberam dose única de extrato bruto de hipófise de carpa comum (6 mg/kg de peixe. A extrusão de ovócitos foi realizada cerca de 12,8 e 11 h após a aplicação da injeção de hipófise, respectivamente para A. bimaculatus e T. chalceus, com a temperatura da água a 26ºC. Mais de 70% das fêmeas das duas espécies responderam positivamente ao tratamento e as taxas médias de fertilização dos ovos foram acima de 70%. Os ovócitos de A. bimaculatus e T. chalceus são esféricos, opacos, demersais, levemente adesivos, de coloração amarela ou parda, e contendo em média respectivamente 4774 e 2563 ovos por grama de ova. O desenvolvimento embrionário nas duas espécies foi rápido, com duração de menos de um dia, estando a temperatura da água entre 24 e 25ºC.Astyanax bimaculatus (Linnaeus, 1758 and Tetragonopterus chalceus Spix & Agassiz, 1829 are two important foraging species occurring at the São Francisco River basin. Specimens from both species were submitted to spawning induction through hypophysation, to study some reproductive features and to obtain subsidiary information for the definition of the artificial reproduction protocol. Males and females were treated with a single dose of crude carp pituitary extract (6 mg/kg. In water at 26ºC, the extrusion of the oocytes was made 12,8 and 11 hours after the hypophisis injection, for A. bimaculatus and T. chalceus respectively. More than 70% of the females of both species showed a positive response to the treatment and mean egg fertilization rates were above 70%. The eggs of A

  16. Relação peso-comprimento e fator de condição de Salminus hilarii Valenciennes 1850 (Osteichthyes, Characidae em um trecho da bacia do rio Sorocaba, Estado de São Paulo, Brasil = Length-weight relationship and condition factor of Salminus hilarii Valenciennes 1850 (Osteichthyes, Characidae in a section of the Sorocaba river basin, São Paulo State, Brazil

    Directory of Open Access Journals (Sweden)

    Gilberto Aparecido Villares Junior

    2007-10-01

    Full Text Available Foram analisados a relação peso-comprimento e o fator de condição deSalminus hilarii, em um trecho da parte baixa da bacia do rio Sorocaba, Estado de São Paulo. Machos, fêmeas e imaturos apresentaram diferentes relações peso-comprimento, assim como variações sazonais de condição que estão possivelmente relacionadas às alterações naintensidade da atividade alimentar e ao período reprodutivo.The length-weight relationship and condition factor of Salminus hilarii were analyzed in a section of the lower part of the Sorocaba river basin, São Paulo State. By studying male, female and immature individuals separately, different length-weight patterns were found for each. The same happened when distinct seasonal variations of the relationships were compared, related to feeding alterations and to thereproductive period of the species.

  17. Metal and trace element sediment assessment from Guarapiranga reservoir, Alto Tiete Basin, Sao Paulo, SP, Brazil; Avaliacao da concentracao de metais e elementos traco em amostras de sedimento do reservatorio Guarapiranga, Sao Paulo, SP, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Guimaraes, Guilherme Moura

    2011-07-01

    The Guarapiranga Reservoir, located in Sao Paulo metropolitan region, Brazil, is responsible for supplying about 20% of the entire population's water needs of this region or approximately 3.7 million people. However, this system has shown significant degradation in water quality, due to untreated domestic sewage and industrial effluents. In this study sediment samples were collected at five points along the reservoir and total concentration of some major (Fe, K and Na), trace (As, Ba, Br, Co, Cr, Cs, Hf, Hg, Rb, Sb, Sc, Ta, Tb, Th, U, V and Zn) and rare earth (Ce, Eu, La, Lu, Nd, Sm, Tb and Yb) elements were determined by instrumental neutron activation analysis (INAA). By inductively coupled plasma optical emission spectrometry (ICP OES) the concentrations of Al, Ba, Be, Ca, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Na, Ni, Pb, Ti, V e Zn were determined after digestion procedure following US EPA 3051 methodology. The concentrations of metals Cd and Pb were determined by graphite furnace atomic absorption spectrometry (GFAAS) and total Hg by cold vapor atomic absorption spectrometry (CVAAS). Methodology validation according to precision and accuracy was performed by reference materials analyses for the three different analytical techniques used. Multielemental results obtained by INAA were compared to NASC (North American Shale Composite), Upper Continental Crust (UCC) and soil from Guarapiranga park values. The Enrichment Factor (EF) and Geo accumulation Index (Igeo) were also evaluated for these data. Metal concentration results by ICP OES and AAS in the samples were compared to the TEL and PEL oriented values established by the Canadian Council of Ministers of the Environment and also adopted by CETESB (Environmental Protection Agency of the Sao Paulo State). The results were also compared to regional reference values (VRR) of limnic sediments from the Alto Tiete Basin. From these data an assessment of metal and trace element accumulated in the sediments from the

  18. Fuzzy logic application for data correction of gamma ray profile and correlation with effective porosity of core from Resende Basin, Rio de Janeiro; Aplicacao da logica fuzzy para correcao de dados de perfil de raios gama e correlacao com porosidade efetiva de testemunhos da Bacia de Resende, Rio de Janeiro

    Energy Technology Data Exchange (ETDEWEB)

    Souza, Francisco de Assis Leal de; Tunala, Leonardo Fernandes; Abreu, Carlos Jorge de; Lopes, Ricardo Tadeu, E-mail: pachoteki@yahoo.com.br, E-mail: leotunala@hotmail.com, E-mail: abreu@geologia.ufrj.br, E-mail: ricardo@lin.ufrj.br [Universidade Federal do Rio de Janeiro (UFRJ/CCMN), RJ (Brazil). Centro de Ciencias Matematicas e da Natureza. Inst. de Geociencias. Dept. de Geologia; Rocha, Paula Lucia Ferrucio da, E-mail: ferrucio@acd.ufrj.br [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil); Martins, Ricardo Rhomberg, E-mail: ricardo301@gmail.com [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Escola Politenica de Engenharia; Lima, Inaya Correa Barbosa, E-mail: inaya@lin.ufrj.br [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Centro de Tecnologia

    2010-12-15

    This work presents here a study on the porosity of cores from Resende Basin (Rio de Janeiro). The first step involved the selection, thinning of the material (core) and sample preparation for the use of porosimeter to obtain effective porosity. The material studied is sandstone, friable, coarse to very fine of three wells (GPR1, GPR2 and GPR3). The fuzzy logic (MatLab) was applied to the effective porosity data calculated from the gamma ray (GR) profile for the construction of a synthetic profile and from this we could identify the errors made in calculating the data. Then the results of porosity from the core were correlated with data from the corrected effective porosity (gamma ray profile) in order to prove the results obtained with both methods. The analysis of the synthetic porosity calculated by the fuzzy logic has shown that this is a promising method for assessing the quality of data and to obtain good fits. (author)

  19. Impactos das mudanças climáticas na demanda de irrigação da bananeira na Bacia do Jaguaribe Impact of climate change on irrigation requirement of banana in Jaguaribe river Basin, Ceará, Brazil

    Directory of Open Access Journals (Sweden)

    Rubens S. Gondim

    2011-06-01

    Full Text Available As mudanças climáticas têm potencial de alterar os processos do ciclo hidrológico, tais como precipitação, que afeta o escoamento superficial, temperatura e umidade relativa do ar devido à sua estreita relação com evaporação e vazão em corpos hídricos e evapotranspiração das plantas. O objetivo do presente trabalho foi analisar os impactos das mudanças climáticas na necessidade hídrica da cultura da bananeira, considerando-se cenários de mudanças climáticas em escala local, em nível de bacia hidrográfica (rio Jaguaribe, no trecho compreendido entre as barragens do Castanhão e de Itaiçaba. Um conjunto composto de uma baseline (climatologia de base do modelo de 1961-1990 e de projeções climáticas, foi processado. Os dados foram então extraídos considerando-se as coordenadas geográficas da região em estudo, com resolução de 0,44 x 0,44º, a fim de abranger toda a área. Estimou-se a evapotranspiração de referência (ETo através de dados da temperatura média mensal e se projetou uma elevação na necessidade hídrica bruta média anual para 2040 com relação às condições iniciais, de 1.989 mm para 2.536 mm e 2.491 mm (27,50 e 25,24% para os cenários A2 e B2, elaborados pelo Painel Intergovernamental de Mudanças Climáticas, respectivamente.Climate change has a potential to impact hydrologic cycle processes, such as rainfall, which affect run-off, temperature and air humidity that have relationship to evaporation over water bodies and plant evapotranspiration. The purpose of this study was to assess impacts of climate change on irrigation water demand of banana, at the river basin level (Jaguaribe river, between Castanhão and Itaiçaba Dams. A climate data set was generated by a climate model for 1961-90 (baseline and the future. The output climate data has been generated, considering a georreferenced coordenated system of the study area in a 0.44 x 0.44º resolution, generating spatial distribution output

  20. Caracterização dos argilominerais usados em matéria-prima cerâmica, da formação Rio do Rasto, Bacia do Paraná, no município de Turvo, SC Characterization of clay minerals used in the ceramic industry, from Rio do Rasto formation, Paraná basin, exploitation in Turvo, SC, Brazil

    Directory of Open Access Journals (Sweden)

    J. A. Costa

    2010-12-01

    Full Text Available No sudeste de Santa Catarina existem inúmeras minas de exploração de argilas destinadas à indústria cerâmica da região. Para o conhecimento desta matéria prima foi realizada a caracterização em detalhe de uma frente de lavra em atividade. A exploração é realizada em terrenos sedimentares da Formação Rio do Rasto (Permiano Superior na Bacia do Paraná que afloram como morros testemunho. Foram coletadas quatorze amostras representativas dos níveis desta mina composta de argilitos com intercalação de siltitos de pequena espessura. As amostras foram analisadas por difratometria de raios X pelo método do pó na rocha total e na fração In the southeastern part of Santa Catarina state, Brazil, many mines of clays used as raw material for the ceramic industry are found. A detail study of this material was developed in a mine in activity. The exploitation of clays is held in sedimentary rocks of Rio do Rasto Formation (Upper Permian in the Paraná Basin. The outcrops are in hills testimonies. Fourteen samples were collected and represent the levels of this mine which consisted of argillites with intercalation of slim siltite layer. These samples were analyzed by X-ray diffraction using the powder method and in the fraction < 4 µm. The chemical composition was determined by X-ray fluorescence spectrometer. Petrographic observations in thin section were also performed. Scanning electron microscope images was obtained in samples fragments by secondary electron method. Electron microprobe microanalysis was performed in one thin section. The results showed large vertical variation in the mineralogy and it has been identified three different levels. Up to 2.00 m there is a predominance of smectite. Between 5.50 m 2.00 m the smectite is the main clay mineral, but with significant amounts of illite/mica and above 5.50 m occurs large increase in K-feldspar and detrital mica. Studies in detail by X-ray diffraction (determination of the b

  1. Análise do sistema de gerenciamento dos resíduos de serviços de saúde nos municípios da bacia hidrográfica do Rio dos Sinos, Rio Grande do Sul, Brasil Analysis of the management system of the healthcare waste in municipalities of Rio dos Sinos hydrographic basin, Rio Grande do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Luciana Paulo Gomes

    2012-12-01

    Full Text Available Nesta pesquisa focou-se o gerenciamento dos resíduos de serviços de saúde (RSS e especificamente aqueles do tipo perfurocortantes. Foram analisadas as formas atuais de gestão implementadas na bacia hidrográfica do Rio dos Sinos (BHRS, a partir da aplicação de questionários nos estabelecimentos de saúde geradores de RSS. Os resultados indicam que 48,6% dos estabelecimentos de saúde atendem corretamente à legislação específica brasileira, verificando ainda uma melhor gestão para os estabelecimentos privados. Os estabelecimentos de saúde do tipo "laboratórios, bancos de sangue e farmácias" instalados nos municípios com mais de 20.000 habitantes e área municipal na BHRS dentro da faixa de 80 a 100% em relação à área total municipal apresentaram os piores resultados em termos de gestão de RSS. O grupo de atividades de serviços de saúde com o maior número de estabelecimentos na BHRS - "consultórios/clínicas de odontologia, clínicas veterinárias, drogarias e unidade móvel" - indicou um dos menores índices de conhecimento das exigências legais específicas relativas ao tema estudado.This research focused on the management of healthcare waste, specifically about the sharps types. The current ways of management in the Rio dos Sinos basin (BHRS were analyzed with the use of questionnaires in health establishments generators of healthcare waste. The results indicate that 48.6% of health facilities comply with the specific legislation in Brazil, also indicating a better management coming from private institutions. Health facilities of the type "labs, blood banks and pharmacies" installed in municipalities with over 20,000 inhabitants and municipal area in BHRS within the range of 80 to 100% relative to the total municipal area had the worst results in terms of healthcare waste management. The group activities of healthcare services with the highest number of establishments in BHRS - "dental offices/clinics, veterinary

  2. A hidropolítica platina no contexto do complexo regional de segurança da América do Sul: entre o conflito e a cooperação (1960-1979 Hydropolitics in the river plate basin in the context of the South American regional security complex: between conflict and cooperation (1960-1979

    Directory of Open Access Journals (Sweden)

    Fábio Albergaria de Queiroz

    2012-12-01

    Full Text Available Em várias regiões do mundo, os múltiplos usos de águas compartilhadas apresentam-se como um componente importante no jogo de poder regional. Essa situação explica por que a gestão de recursos hídricos se encontra vinculada a preocupações de ordem estratégica ou outras questões de alta política em muitos desses casos. Mas em que intensidade? Em busca de respostas para essa questão, o presente estudo analisa o caso da Bacia do Prata, empregando, para tanto, conceitos como securitização, atores securitizadores, objetos de referência, Complexos Regionais de Segurança (CRS e, também, a ideia dos Complexos Hidropolíticos, originalmente desenvolvida por Michael Schulz como uma forma distinta de CRS aplicável em áreas onde as questões relacionadas aos recursos hídricos se destacam como uma característica proeminente nas dinâmicas políticas regionais.In many regions of the world, the multiple uses of transboundary fresh water have been seen as a critically important component for regional stability. This situation explains why, in many cases, water management has commonly become linked to national security concerns or other issues of a "high politics" nature. But, at what intensity? In search of answers for this question, this research analyzes the case of the River Plate Basin employing Barry Buzan's central concepts of securitization, securitizing actors, referent objects, Regional Security Complex (RSC and the related concept of Hydropolitical Complex (HC developed by Michael Schulz as a distinct form of RSC applicable on areas where water-related issues stand out as a salient feature in regional political dynamics.

  3. Manyame River Basin, Zimbabwe

    African Journals Online (AJOL)

    Available on website http://www.wrc.org.za. ISSN 1816-7950 (On-line) = Water SA Vol. 42 No. 1 January 2016. Published under a Creative Commons Attribution Licence. A test of the Lake Habitat Survey method in Cleveland Reservoir and. Lake Chivero (Manyame River Basin, Zimbabwe). Tatenda Dalu1*, Edwin ...

  4. The Mediterranean basin

    DEFF Research Database (Denmark)

    Tomas, Carmen; Sanchez Sanchez, Juan Jose; Barbaro, A.

    2008-01-01

    genetically from the rest of the populations in the Mediterranean area. This result supports the hypothesis of a low incidence of the south-north genetic interchange at the western shores of the Mediterranean basin. A low genetic distance was found between populations in the Middle East and the western part...

  5. Avaliação da vulnerabilidade e do risco à contaminação das águas subterrâneas da bacia hidrográfica do Rio gramame (Pb / Assessment of vulnerability and risk to contamination of Gramame basin river groundwater (Paraíba, Brazil

    Directory of Open Access Journals (Sweden)

    Franklin Mendonça Linhares

    2014-04-01

    Full Text Available The contamination vulnerability maps of groundwater, created with help of Geographic Information Systems (GIS, are being increasingly used to support environmental management plans of governmental and non-governmental organizations. This paper shows the mapping of vulnerable areas to contamination of the free aquifer of Gramame river basin (BRG in Portuguese. The methods DRASTIC and modified DRASTIC were the tools used in this research. These methods calculate the vulnerability index based on the sum of environmental parameters. The DRASTIC considers seven factors: Depth to water, net Recharge, Aquifer media, Soil media, Topography, Impact of vadose zone and hydraulic Conductivity, whereas the modified DRASTIC considers also the land use and land cover factors. The results show that the DRASTIC, for the rainy season, identified three vulnerability classes (low, moderate and high for the study area, with a predominance of moderate class. For the dry period, the vulnerability had basically two vulnerability classes: low and moderate. When the land use and land cover factors where considered, areas of high vulnerability became very high level, and areas of moderate vulnerability became high risk class of contamination. The DRASTIC application shows the importance of the use of GIS’s in groundwater protection to risk of contamination.

  6. Analysis of the pre-rift/rifte transition interval (Serraria and Barra de Itiuba formations) from the Sergipe-Alagoas basin; Analise da secao de transicao pre-rifte/rifte (formacoes Serraria e Barra de Itiuba) da Bacia Sergipe-Alagoas

    Energy Technology Data Exchange (ETDEWEB)

    Barreiro, C.B.; Mizusaki, A.M.P. [Rio Grande do Sul Univ., Porto Alegre, RS (Brazil)]. E-mail: camilita@terra.com.br; ana.misuzaki@ufrgs.br; Garcia, A.J.V. [Universidade do Vale do Rio dos Sinos (UNISINOS), Sao Leopoldo, RS (Brazil)]. E-mail: garcia@euler.unisinos.br

    2003-07-01

    The pre-rift/rift transition is represented by the Serraria and Barra de Itiuba formations. This interval was analyzed through qualitative and quantitative descriptions of cores, electric log analysis and studies of outcropping sections. The integration of surface and subsurface data allowed the stratigraphic characterization of sandstone bodies in the pre-rift/rift. These sandstones bodies were deposited by fluvial braided, lacustrine and deltaic systems (delta plain, delta front and pro delta). The sedimentary deposits characterized in the Serraria Formation are of channel, flooding of the fluvial system and eolic. The upper interval of this formation is characterized by to coarse medium-grained sandstones identified as the Caioba Sandstone. The Barra de Itiuba Formation contains lake, pro delta, frontal bar, distributary mouth, crevasse and distributary channel deposits. The sandstone units were specifically characterized in terms of their potential reservoir quality, and they were characterized the reservoirs R1 (good to medium quality) and Caioba (good quality) from the pre-rift phase, and reservoirs R2 (medium quality) and R3 (medium to good quality) from the rift phase. The reservoirs from pre-rift phase phase show the better reservoirs quality potential of the pre-rift/rift transition in the Sergipe-Alagoas Basin. (author)

  7. Canada Basin revealed

    Science.gov (United States)

    Mosher, David C.; Shimeld, John; Hutchinson, Deborah R.; Chian, D; Lebedeva-Ivanova, Nina; Jackson, Ruth

    2012-01-01

    More than 15,000 line-km of new regional seismic reflection and refraction data in the western Arctic Ocean provide insights into the tectonic and sedimentologic history of Canada Basin, permitting development of new geologic understanding in one of Earth's last frontiers. These new data support a rotational opening model for southern Canada Basin. There is a central basement ridge possibly representing an extinct spreading center with oceanic crustal velocities and blocky basement morphology characteristic of spreading centre crust surrounding this ridge. Basement elevation is lower in the south, mostly due to sediment loading subsidence. The sedimentary succession is thickest in the southern Beaufort Sea region, reaching more than 15 km, and generally thins to the north and west. In the north, grabens and half-grabens are indicative of extension. Alpha-Mendeleev Ridge is a large igneous province in northern Amerasia Basin, presumably emplaced synchronously with basin formation. It overprints most of northern Canada Basin structure. The seafloor and sedimentary succession of Canada Basin is remarkably flat-lying in its central region, with little bathymetric change over most of its extent. Reflections that correlate over 100s of kms comprise most of the succession and on-lap bathymetric and basement highs. They are interpreted as representing deposits from unconfined turbidity current flows. Sediment distribution patterns reflect changing source directions during the basin’s history. Initially, probably late Cretaceous to Paleocene synrift sediments sourced from the Alaska and Mackenzie-Beaufort margins. This unit shows a progressive series of onlap unconformities with a younging trend towards Alpha and Northwind ridges, likely a response to contemporaneous subsidence. Sediment source direction appeared to shift to the Canadian Arctic Archipelago margin for the Eocene and Oligocene, likely due to uplift of Arctic islands during the Eurekan Orogeny. The final

  8. Avaliação da vulnerabilidade e do risco à contaminação das águas subterrâneas da bacia hidrográfica do Rio gramame (Pb) / Assessment of vulnerability and risk to contamination of Gramame basin river groundwater (Paraíba, Brazil)

    OpenAIRE

    Franklin Mendonça Linhares; Cristiano das Neves Almeida; Alain Marie B. Passerat de Silans; Victor Hugo Rabelo Coelho

    2014-01-01

    Os mapas de vulnerabilidade de contaminação das águas subterrâneas, elaborados a partir de Sistemas de Informações Geográficas (SIG’s), vêm sendo cada vez mais utilizados para dar suporte aos planos de gestão ambiental dos órgãos governamentais e não-governamentais. Este artigo mostra o mapeamento das áreas vulneráveis à contaminação do aquífero livre da bacia hidrográfica do rio Gramame (BRG). Os métodos DRASTIC e DRASTIC modificado foram as ferramentas utilizadas nesta pesquisa. Esses métod...

  9. Integrated Hydrographical Basin Management. Study Case - Crasna River Basin

    Science.gov (United States)

    Visescu, Mircea; Beilicci, Erika; Beilicci, Robert

    2017-10-01

    Hydrographical basins are important from hydrological, economic and ecological points of view. They receive and channel the runoff from rainfall and snowmelt which, when adequate managed, can provide fresh water necessary for water supply, irrigation, food industry, animal husbandry, hydrotechnical arrangements and recreation. Hydrographical basin planning and management follows the efficient use of available water resources in order to satisfy environmental, economic and social necessities and constraints. This can be facilitated by a decision support system that links hydrological, meteorological, engineering, water quality, agriculture, environmental, and other information in an integrated framework. In the last few decades different modelling tools for resolving problems regarding water quantity and quality were developed, respectively water resources management. Watershed models have been developed to the understanding of water cycle and pollution dynamics, and used to evaluate the impacts of hydrotechnical arrangements and land use management options on water quantity, quality, mitigation measures and possible global changes. Models have been used for planning monitoring network and to develop plans for intervention in case of hydrological disasters: floods, flash floods, drought and pollution. MIKE HYDRO Basin is a multi-purpose, map-centric decision support tool for integrated hydrographical basin analysis, planning and management. MIKE HYDRO Basin is designed for analyzing water sharing issues at international, national and local hydrographical basin level. MIKE HYDRO Basin uses a simplified mathematical representation of the hydrographical basin including the configuration of river and reservoir systems, catchment hydrology and existing and potential water user schemes with their various demands including a rigorous irrigation scheme module. This paper analyzes the importance and principles of integrated hydrographical basin management and develop a case

  10. Distribuição de peixes na microbacia do Ribeirão Grande, Serra da Mantiqueira Oriental, São Paulo, Brasil Fish distribution in the Ribeirão Grande Basin, Eastern Serra da Mantiqueira, São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Francisco Manoel de Souza Braga

    Full Text Available Foram amostrados oito pontos de coleta no sistema do Ribeirão Grande (22º47'08"S, 45º28'17"W, de julho de 2001 a abril de 2002. Os peixes foram amostrados quatro vezes em cada ponto, no inverno (julho de 2001, na primavera (outubro de 2001, no verão (fevereiro de 2002 e no outono (abril de 2002. Em cada ponto obteve-se a condutividade, pH, temperatura da água e oxigênio dissolvido, a elevação foi obtida em metros utilizando-se de um receptor GPS. A dimensão da distribuição espacial foi a principal fonte de variabilidade na distribuição de peixes no sistema do Ribeirão Grande. Foi capturado um total de 37 espécies e as dez espécies mais abundantes correspondem a quase 90% do total capturado. Pareiorhina rudolphi foi capturada principalmente na encosta; Characidium lauroi, Trichomycterus itatiayae, Neoplecostomus microps, Astyanax scabripinnis, Taunaya bifasciata e Harttia carvalhoi foram capturadas no pediplano; Characidium alipioi, Imparfinis minutus e Loricariichthys sp. foram capturadas na planície do vale. Os pontos amostrais P6 e P7, localizados na transição entre tributários e o canal principal, foram considerados um ecótono, onde a diversidade de espécies foi mais alta.Eight sites were surveyed in the Ribeirão Grande system (22º47'08"S, 45º28'17"W from July 2001 to April 2002. Fishes were sampled four times each site, during the winter (July 2001, spring (October 2001, summer (February 2002 and autumn (April 2002. Conductivity, pH, water temperature and dissolved oxygen were measured for each site, and elevations in meters were taken by a GPS receiver. The spatial dimension was the main source of variability in the fish distribution in the Ribeirão Grande system. A total of 37 species were caught and the ten most abundant species correspond almost 90% of the total catch. Pareiorhina rudolphi was caught principally in the slope; Characidium lauroi, Trichomycterus itatiayae, Neoplecostomus microps, Astyanax

  11. Drainage basins features and hydrological behaviour river Minateda basin

    International Nuclear Information System (INIS)

    Alonso-Sarria, F.

    1991-01-01

    Nine basin variables (shape, size and topology) have been analyzed in four small basins with non-permanent run off (SE of Spain). These geomorphological variables have been selected for their high correlation with the Instantaneous unit hydrograph parameters. It is shown that the variables can change from one small basin to another within a very short area; because of it, generalizations about the behaviour of the run off are not possible. In conclusion, it is stated that the variations in geomorphological aspects between different basins, caused mainly by geological constraints, are a very important factor to be controlled in a study of geoecological change derived from climatic change

  12. Wind energy in Mediterranean Basin

    International Nuclear Information System (INIS)

    Gaudiosi, G.

    1991-01-01

    In its examination of wind energy potential in the Mediterranean Basin, this paper provides brief notes on the Basin's geography; indicates power production and demand; describes the area's wind characteristics and wind monitoring activities; illustrates wind velocity distributions; estimates local wind power production potential; reviews the Basin's wind energy marketing situation and each bordering country's wind energy programs; surveys installed wind energy farms; and assesses national research and commercialization efforts

  13. Estrutura da vegetação em florestas de mangue do estuário do rio Paraíba do Sul, Estado do Rio de Janeiro, Brasil Vegetation structure of the mangrove forest at the estuary Paraíba do Sul river, Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Elaine Bernini

    2004-09-01

    Full Text Available A estrutura da vegetação do manguezal do estuário do rio Paraíba do Sul foi analisada pelo método de parcelas, que foram distribuídas na franja e no interior da floresta em dois sítios de estudo. No geral, considerando-se os indivíduos > 1m alt., a altura média variou de 6,3 a 9,9m, o DAP médio de 7,44 a 13,4cm, a área basal média de 14,5 a 35,3m².ha-1 e a densidade média de 1.920 a 3.400 troncos.ha-1. Estes parâmetros estruturais não diferiram, significativamente, entre a franja e o interior da floresta, mas a contribuição de cada espécie variou entre as distintas zonas. Avicennia germinans (L. Stearn. foi a espécie dominante em área basal de indivíduos vivos (60%, seguida de Rhizophora mangle L. (25% e de Laguncularia racemosa (L. Gaertn. (15%. Os resultados obtidos demonstraram que a área de manguezal analisada apresenta melhor desenvolvimento estrutural quando comparada a outros manguezais do litoral fluminense, tais como os encontrados nas Baías de Guanabara e Sepetiba.A structural analysis of the mangrove forest at the Paraíba do Sul river estuary was performed using the stand method. The stands were demarcated in two points both at the forest edge and interior. The results indicate that average height varied from 6.3 to 9.9m; DBH varied from 7.44 to 13.4cm; average basal area varied from 14.5 to 35.3m².ha-1, and average density varied from 1,920 to 3,400 trunks.ha-1 (trees > 1m height. These structural parameters did not differ between the edge and the interior, but the contribution of each species varied between the zones. Avicennia germinans (L. Stearn. was the dominant species (60%, followed by Rhizophora mangle L. (25%, and Laguncularia racemosa (L. Gaertn. (15%. These results demonstrate that the mangroves forest at the Paraíba do Sul estuary has a better structural development than other mangrove sites found in the Rio de Janeiro State (e.g., those mangrove forests located at the Sepetiba and Guanabara

  14. Multiple oscillatory modes of the Argentine Basin. Part II. The spectral origin of the basin modes

    NARCIS (Netherlands)

    Weijer, W.; Vevier, F.; Gille, S.T.; Dijkstra, H.A.

    2007-01-01

    In this paper the spectrum of barotropic basin modes of the Argentine Basin is shown to be connected to the classical Rossby basin modes of a flat-bottom (constant depth), rectangular basin. First, the spectrum of basin modes is calculated for the Argentine Basin, by performing a normal-mode

  15. Soil organic matter and fertility of anthropogenic dark earths (Terra Preta de Índio in the Brazilian Amazon basin Matéria orgânica e fertilidade de solos antropogênicos (Terra Preta De Índio da Bacia Amazônica brasileira

    Directory of Open Access Journals (Sweden)

    Tony Jarbas Ferreira Cunha

    2009-02-01

    Full Text Available Fertility properties, total C (Ctot, and chemical soil organic matter fractions (fulvic acid fraction - FA, humic acid fraction - HA, humin fraction - H of anthropogenic dark earths (Terra Preta de Índio of the Amazon basin were compared with those of Ferralsols with no anthropogenic A horizon. Terra Preta soils had a higher fertility (pH: 5.1-5.4; Sum of bases, SB: 8.93-10.33 cmol c kg-1 , CEC: 17.2-17.5 cmol c kg-1 , V: 51-59 %, P: 116-291 mg kg-1 and Ctot (44.6-44.7 g kg-1 than adjacent Ferralsols (pH: 4.4; SB: 2.04 cmol c kg-1, CEC: 9.5 cmol c kg-1, V: 21 %, P 5 mg kg-1, C: 37.9 g kg-1. The C distribution among humic substance fractions (FA, HA, H in Terra Preta soils was also different, as shown by the ratios HA:FA and EA/H (EA=HA+FA (2.1-3.0 and 1.06-1.08 for Terra Preta and 1.2 and 0.72 for Ferralsols, respectively. While the cation exchange capacity (CEC, of Ferralsols correlated with FA (r = 0.97, the CEC of Terra Preta correlated with H (r = 0.82. The correlation of the fertility of Terra Preta with the highly stable soil organic matter fraction (H is highly significant for the development of sustainable soil fertility management models in tropical ecosystems.Propriedades de fertilidade, carbono total (Ctot e frações químicas da matéria orgânica (fração ácidos fúlvicos - FA, fração ácidos húmicos - HA e fração humina - HUM foram comparados entre solos antrópicos (Terra Preta de Índio e Latossolos sem horizonte A antrópico. Os solos antrópicos apresentaram maior fertilidade (pH: 5,1-5,4; S: 8,93-10,33 cmol c kg-1 ; CEC: 17,2-17,5 cmol c kg-1 ; V: 51-59 %; P: 116-291 mg kg-1 e maiores teores de carbono total (44,6-44,7 g kg-1 que os Latossolos (pH: 4,4; S: 2,04 cmol c kg-1; CEC: 9,5 cmol c kg-1; V: 21 %, P: 5 mg kg-1, Ctot: 37,9 g kg-1. Os solos antrópicos também tiveram distribuição diferenciada de C entre as frações das substâncias húmicas (FA, HÁ e HUM, expressa pelas razões HA:FA e EA:HUM (EA = HA + FA

  16. Variação espacial e temporal dos fatores limnológicos em riachos da microbacia do rio São Francisco Verdadeiro Spatial and temporal variation i of limnological factors in streams of the micro-basin of the São Francisco Verdadeiro river

    Directory of Open Access Journals (Sweden)

    Luciano C. de Oliveira

    2008-12-01

    Full Text Available Com objetivo de caracterizar espacial e temporalmente os riachos da microbacia do rio São Francisco Verdadeiro, Marechal Cândido Rondon - PR, em função de fatores limnológicos, foram estabelecidas seis estações de coleta em três riachos (Curvado, Ajuricaba e Arroio Fundo, sendo uma estação na foz e outra na nascente. As coletas de água foram obtidas entre junho de 2005 e maio de 2006, totalizando 72 amostras. Foram analisadas as seguintes variáveis: temperatura, pH, condutividade elétrica, oxigênio dissolvido, turbidez, material em suspensão, fósforo total dissolvido, ortofosfato, nitrogênio total e nitrogênio amoniacal. De acordo com a análise de variância, houve baixa variabilidade entre as estações de coleta, porém a variação temporal demonstrou a influência do ciclo hidrológico. A análise de componentes principais (ACP discriminou o sistema com base nos maiores valores registrados para as variáveis limnológicas, ficando separados os períodos influenciados pelas secas e pelas chuvas. A maior parte das variáveis está associada com o período de chuvas, no entanto há concentrações esporádicas de nutrientes na seca e menores valores de oxigênio dissolvido, demonstrando a dificuldade de diluição nesse período, causada pela diminuição da chuva e, consequentemente, do volume de água dos riachos.In order to characterize spatially and temporarily streams of the São Francisco Verdadeiro river micro-basin in Marechal Cândido Rondon, State of Paraná, Brazil, according to limnological factors, six sampling stations were established in three streams (Curvado, Ajuricaba and Arroio Fundo - one station at the mouth of the river and other at the spring of the streams. Water samples were collected between June 2005 and May 2006, totalizing 72 samples. The following variables were analyzed: temperature, pH, electric conductivity, dissolved oxygen, turbidity, suspended matter, total dissolved phosphorus

  17. Diversity and distribution Patterns of the infralittoral green macroalgae from Potiguar basin, Rio Grande do Norte, Northeastern Brazil Diversidade e padrão de distribuição das macroalgas verdes da bacia Potiguar, Rio Grande do Norte, Nordeste do Brasil

    Directory of Open Access Journals (Sweden)

    Adilma de Lourdes Montenegro Cocentino

    2010-12-01

    Full Text Available Diversity and distribution pattern of the infralittoral green macroalgae at Potiguar basin, Rio Grande do Norte, Northeastern Brazil were analyzed from material collected at depths varying from 2 to 100 m. Collections were carried out with two types of dredges during four campaigns: July 2002, May and November 2003 and May 2004 at 43 stations. Chlorophyta is represented by 54 species, five varieties and three forms. The most representative family is Caulerpaceae, and the most diverse genus is Caulerpa, with 11 species. The results showed that most taxa (89% are rare, and 10% are present at low frequencies. The most frequent species was Caulerpaprolifera (Forssk. J.V. Lamour. occurring at almost all coastal and inner shelf stations, recorded in all campaigns. Species distribution by depth range showed that higher species number occurred on the inner shelf from 10 to 20 m, and a wide vertical distribution pattern was registered for Anadyomenestellata (Wulfen in Jacq. C. Agardh,Chamaedoris peniculum (J. Ellis & Solander Kuntze, Codium isthmocladum Vickers, Microdictyon sp., Udoteaoccidentalis A. Gepp & E. Gepp and Ventricaria ventricosa (J. Agardh J.L. Olsen & J.A. West. Four species, Cladophoracoelothrix Kütz., C.ordinata (Børgensen C. Hoek, Caulerpellaambigua (Okamura Prud'homme & Lokhorst and Halimedasimulans M. Howe, were recorded for the first time in Rio Grande do Norte.Diversidade e padrão de distribuição das algas verdes do infralitoral da Bacia potiguar, RN, nordeste do Brasil foram analisados a partir de material coletado em profundidades que variaram de 2 a 100 m. As coletas foram feitas em dois tipos de dragas durante as quatro campanhas: julho de 2002, maio e novembro de 2003 e maio de 2004, em 43 estações. Chlorophyta está representada por 54 espécies, cinco variedades e três formas. A família mais representativa é Caulerpaceae e dentro da família, o gênero mais diverso é Caulerpa, com 11 espécies. Os resultados

  18. Comparação de infiltração de água no solo mensurada em período seco e úmido, em diferentes usos da terra na bacia do arroio Boa Vista, Guamiranga, Paraná / Assessment of soil water infiltration measured during dry and wet seasons on different land uses in the Boa Vista Basin Stream, Guamiranga, Paraná, Brazil

    Directory of Open Access Journals (Sweden)

    Vademir Antoneli

    2009-08-01

    Full Text Available ResumoNeste estudo, é comparada a capacidade de infiltração de água no solo mensurada em período seco (agosto e úmido (dezembro. Os usos da terra onde foi mensurada a infiltração foram mapeados previamente (floresta com araucária, agricultura, erva-mate, reflorestamento, pastagem, capoeira e faxinal. A mensuração da infiltração foi feita através de infiltrômetro com anel duplo, sendo que, em cada uso, foram feitas oito repetições em cada período. Verificou-se que ocorreu diferença significativa na capacidade de infiltração de água no solo mensurada no período seco em comparação com o período úmido. As diferenças ocorreram tanto no volume total infiltrado, quanto na taxa de infiltração final. Dentre os usos mensurados, as áreas de pastagens apresentaram a menor capacidade de infiltração. Conclui-se que o padrão e a dinâmica do uso da terra (mosaico espacial, na bacia do arroio Boa Vista, são responsáveis por diferentes respostas na capacidade de infiltração de água. Por consequência, esperam-se também diferentes comportamentos hidro-erosivos em cada unidade de terra existente na bacia.AbstractThis article offers a comparison between the infiltration capacity of water in the soil measured during dry (August and wet (December seasons at the Boa Vista stream basin, in Guamiranga (Paraná State, South Brazil. The land uses there infiltration was measured were previously mapped and featured mixed Ombrophyla Forest, agriculture, Ilex paraguariensis plantations, reforestation, pasture, shrubs and “faxinal” (properties without fencing, whose owners share farming facilities. A double ring infiltrometer was used to measure water infiltration in the soil, with eight repetitions during each season. A significant difference was verified in the infiltration capacity when the soils measured during the dry period were compared with those measured during the wet period. Differences appeared both in the total

  19. Geophysical Investigation of the Raton Basin.

    Science.gov (United States)

    1982-05-01

    65 miles wide, the Raton Basin is divided by the Cimarron Arch into the northern Raton Basin and the Las Vegas Basin on the south. The deepest...to the east, the Cimarron Arch on the north, and was linked by a low saddle to the Tucumcari Basin to the south. The Colorado and Rowe-Mora Basins...sedimentary rock thinning near the Apishipa, Cimarron , and Sierra Grande Arches; 2) presence of volcanic rock in the southern portion of the Basin; 3

  20. Solos da bacia de Taubaté (Vale do Paraíba: levantamento de reconhecimento. Séries monotípicas, suas propriedades genético-morfológicas, físicas e químicas Soils of Taubaté basin (Paraíba Valley

    Directory of Open Access Journals (Sweden)

    F. C. Verdade

    1961-01-01

    Full Text Available A Bacia tie Taubaté corresponde a um «vale de afundimento», onde ocorreram sedimentações no período Terciário, estando atualmente moldada pelo rio Paraíba e seus tributários. A planície aluvial é extensa e de grande importância econômica para o Estado de São Paulo. No presente trabalho é apresentado o levantamento de reconhecimento dos solos da Bacia de Taubaté, cujas finalidades foram determinar as características fisicas e químicas das terras e sua extensão aproximada, visando fornecer dados para o planejamento geral de irrigação e drenagem, ao mesmo tempo que eram identificados os tipos de solos (séries monotipicas para o levantamento detalhado que se processa a partir do município de Pindamonhangaba. As categorias dos solos foram estabelecidas até séries monotípicas, mas a delimitação no campo, em mapas na escala de 1:100 0(0. foi feita nas unidades chamadas associação de séries. Procurou-se grupar na mesma associação solos que, pertencendo ao mesmo grande grupo e formação geológica, tivessem no perfil igual distribuição de classes texturais. Alguns solos, devido à sua pequena extensão ou da ocorrência íntima com outros de associações diferentes, fugiram à regra preliminarmente exposta. O levantamento abrange uma área de 222 980 hectares, incluindo a planície aluvial, as sedimentações terciárias e pequena faixa pré-cambriana que orla a Bacia. Foram estudados 151 perfis, caracterizando 48 séries monotípicas, grupadas em 18 associações de séries. A associação de séries A é constituída de solos pertencentes a sub-ordem Latossolo, formados em sedimentos do Terciário com textura argilosa em todos os horizontes. Os perfis dêstes solos apresentam um horizonte A3 normalmente adensado e um B friável. Compreendem as séries monotipicas: Borda, Cajuru, Feital, Gleba, Guatemala, Pinda, Pinhão, Polêmica, Ponte Alta, Rapadura e Ronco.The Taubaté Basin represents a > where sediments were

  1. Organização das assembléias de peixes em riachos da bacia do rio Iguatemi, Estado do Mato Grosso do Sul - DOI: 10.4025/actascibiolsci.v27i2.1350 Organization of the fish assemblages in streams of Iguatemi River basin, Mato Grosso do Sul State - DOI: 10.4025/actascibiolsci.v27i2.1350

    Directory of Open Access Journals (Sweden)

    Miguel Petrere Junior

    2005-03-01

    Full Text Available Como o objetivo de descrever os padrões de organização das comunidades de peixes em riachos da bacia do rio Iguatemi amostramos riachos com redes de espera e de arrasto no período de novembro/1999 a agosto/2000. Coletamos 567 indivíduos distribuídos em 24 espécies. Constatamos influência significativa das características dos riachos sobre a diversidade de espécies. A composição de espécies foi pouco explicada pelas características dos riachos. Verificamos influência significativa da morfologia na distribuição em ocorrência das espécies (Mantel r = -0,34; P = 0,04, mas não na distribuição em sua abundância (Mantel r = -0,21; P = 0,07. Comprovamos através do índice de co-ocorrência (C-score das espécies que sua composição nos riachos estudados é estocásticaAiming to describe the patterns of the fish assemblages organization in streams of the Iguatemi River basin we sampled streams with seine nets and sieves from November/1999 to August/2000. We collected 567 individuals distributed in 24 species. We detected statistically significant influence of the streams characteristics upon species diversity. The species composition was hardly explained by the physical and chemical characteristics of the streams. Then we detected significant influence of the fish ecomorphology in the species occurrence (Mantel r = -0,34; P = 0,04, but not in the distribution of its abundance (Mantel r = -0,21; P = 0,07. We verified through the species co-occurrence index (C-score that its composition in the studied streams is stochastic

  2. K-Basins design guidelines

    International Nuclear Information System (INIS)

    Roe, N.R.; Mills, W.C.

    1995-06-01

    The purpose of the design guidelines is to enable SNF and K Basin personnel to complete fuel and sludge removal, and basin water mitigation by providing engineering guidance for equipment design for the fuel basin, facility modifications (upgrades), remote tools, and new processes. It is not intended to be a purchase order reference for vendors. The document identifies materials, methods, and components that work at K Basins; it also Provides design input and a technical review process to facilitate project interfaces with operations in K Basins. This document is intended to compliment other engineering documentation used at K Basins and throughout the Spent Nuclear Fuel Project. Significant provisions, which are incorporated, include portions of the following: General Design Criteria (DOE 1989), Standard Engineering Practices (WHC-CM-6-1), Engineering Practices Guidelines (WHC 1994b), Hanford Plant Standards (DOE-RL 1989), Safety Analysis Manual (WHC-CM-4-46), and Radiological Design Guide (WHC 1994f). Documents (requirements) essential to the engineering design projects at K Basins are referenced in the guidelines

  3. Geologic Basin Boundaries (Basins_GHGRP) GIS Layer

    Data.gov (United States)

    U.S. Environmental Protection Agency — This is a coverage shapefile of geologic basin boundaries which are used by EPA's Greenhouse Gas Reporting Program. For onshore production, the "facility" includes...

  4. Marketing San Juan Basin gas

    International Nuclear Information System (INIS)

    Posner, D.M.

    1988-01-01

    Marketing natural gas produced in the San Juan Basin of New Mexico and Colorado principally involves four gas pipeline companies with significant facilities in the basin. The system capacity, transportation rates, regulatory status, and market access of each of these companies is evaluated. Because of excess gas supplies available to these pipeline companies, producers can expect improved take levels and prices by selling gas directly to end users and utilities as opposed to selling gas to the pipelines for system supply. The complexities of transporting gas today suggest that the services of an independent gas marketing company may be beneficial to smaller producers with gas supplies in the San Juan Basin

  5. Great Basin Experimental Range: Annotated bibliography

    Science.gov (United States)

    E. Durant McArthur; Bryce A. Richardson; Stanley G. Kitchen

    2013-01-01

    This annotated bibliography documents the research that has been conducted on the Great Basin Experimental Range (GBER, also known as the Utah Experiment Station, Great Basin Station, the Great Basin Branch Experiment Station, Great Basin Experimental Center, and other similar name variants) over the 102 years of its existence. Entries were drawn from the original...

  6. River basin management and community : the Great Ouse Basin, 1850–present

    NARCIS (Netherlands)

    Mostert, E.

    2017-01-01

    River basins are difficult units to manage. Society is generally not organized on the basis of river basins, yet river basins are important units for society and vice versa. This paper discusses the development and effectiveness of river basin management, using the Great Ouse Basin in the east of

  7. Matéria-prima da formação Corumbataí na região do pólo cerâmico de Santa Gertrudes, SP, com características naturais para fabricação de argila expandida Sedimentary rocks from Corumbataí formation (Paraná basin, Brazil with natural characteristics to produce expanded clay lightweight aggregate

    Directory of Open Access Journals (Sweden)

    M. M. T. Moreno

    2012-09-01

    Full Text Available Estudou-se um material da base da Formação Corumbataí, proveniente de uma mineração de argila, que apresenta restrições de uso em cerâmica devido à sua dureza e, principalmente, ao alto conteúdo de matéria orgânica. Verificou-se que o material apresenta características naturais ótimas para a fabricação de argila expandida diretamente a partir de fragmentos de rocha, mostrando comportamento piroplástico com expansão significativa se submetido à queima rápida. A caracterização da matéria-prima e do produto foi realizada mediante análise de carbono orgânico, difração de raios X, microscopia ótica e testes de queima. Foram determinadas as condições de queima para obter argila expandida utilizando forno de queima rápida e forno a rolos, ambos de laboratório, obtendo corpos com densidade variável (que podem chegar a valores menores que 0,5 g.cm-3 até o limite de expansão. Esta densidade é obtida devido à formação de poros fechados e uma película externa vítrea, que proporcionam uma resistência mecânica alta aos fragmentos expandidos.This paper refers to the study of the material of the base of the Corumbataí formation (Parana Basin, Brazil of a clay mine, which presents limits for its use in ceramic tiles in dry grinding process due to its hardness and, especially, the high content of organic matter in relation to the clay overlaid. The characterization of the raw material and the product was accomplished by organic carbon analysis, X-ray diffraction, optical microscopy and test-firing. Firing conditions were determined to get expanded clay, using fast firing static kiln and a continuous roller kiln, both from laboratory equipment, getting samples with variable density up to the limit of expansion, with density that can reach values lower than 0.5 g.cm-3 because of the formation of closed pores and an external vitreous foil which provide a high mechanical resistance to the particles.

  8. Methodology of the {sup 137} Cs for the soil erosion and deposition determination in a micro basin from the north of Parana State; Metodologia do {sup 137} Cs para determinacao da erosao e deposicao de solo em uma microbacia do norte do Parana

    Energy Technology Data Exchange (ETDEWEB)

    Andrello, Avacir Casanova

    1997-12-31

    The measurement of {sup 137} Cs redistribution in the field allows the determination of soil erosion/accumulation. The {sup 137} Cs activity of soil samples, taken from a small basin at the North of Parana, were measured employing a HPGe gamma ray detector and a standard spectrometric nuclear electronic chain. Standard oil samples with known concentrations of {sup 137} Cs were prepared for the detection efficiency determination. Soil loss or gain was measured at the top, midslope and low slope regions, for six different transects at the investigated small basin. (author) 47 refs., 31 figs., 11 tabs.

  9. Allegheny County Basin Outlines Map

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — This basins dataset was created to initiate regional watershed approaches with respect to sewer rehabilitation. If viewing this description on the Western...

  10. Sustaining Exploration in Mature Basins

    International Nuclear Information System (INIS)

    Bayo, A.

    2002-01-01

    Exploration is a business like any other business driven by opportunity, resources and expectation of profit. Therefore, exploration will thrive anywhere the opportunities are significant, the resources are available and the outlook for profit (or value creation) is good. To sustain exploration activities anywhere, irrespective of the environment, there must be good understanding of the drivers of these key investment criteria. This paper will examine these investment criteria as they relate to exploration business and address the peculiarity of exploration in mature basin. Mature basins are unique environment that lends themselves a mix of fears, paradigms and realities, particularly with respect to the perception of value. To sustain exploration activities in a mature basin, we need to understand these perceptions relative to the true drivers of profitability. Exploration in the mature basins can be as profitable as exploration in emerging basins if the dynamics of value definition-strategic and fiscal values are understood by operators, regulators and co ventures alike. Some suggestions are made in this presentation on what needs to be done in addressing these dynamic investment parameters and sustaining exploration activities in mature basins

  11. Relação peso-comprimento e fator de condição de Salminus hilarii Valenciennes 1850 (Osteichthyes, Characidae em um trecho da bacia do rio Sorocaba, Estado de São Paulo, Brasil - DOI: 10.4025/actascibiolsci.v29i4.884 Length-weight relationship and condition factor of Salminus hilarii Valenciennes 1850 (Osteichthyes, Characidae in a section of the Sorocaba river basin, São Paulo State, Brazil - DOI: 10.4025/actascibiolsci.v29i4.884

    Directory of Open Access Journals (Sweden)

    Leandro Muller Gomeiro

    2008-02-01

    Full Text Available Foram analisados a relação peso-comprimento e o fator de condição de Salminus hilarii, em um trecho da parte baixa da bacia do rio Sorocaba, Estado de São Paulo. Machos, fêmeas e imaturos apresentaram diferentes relações peso-comprimento, assim como variações sazonais de condição que estão possivelmente relacionadas às alterações na intensidade da atividade alimentar e ao período reprodutivo.The length-weight relationship and condition factor of Salminus hilarii were analyzed in a section of the lower part of the Sorocaba river basin, São Paulo State. By studying male, female and immature individuals separately, different length-weight patterns were found for each. The same happened when distinct seasonal variations of the relationships were compared, related to feeding alterations and to the reproductive period of the species.

  12. The Heidelberg Basin Drilling Project — basin analysis

    Science.gov (United States)

    Tanner, David C.; Martini, Nicole; Buness, Hermann; Gabriel, Gerald; Krawczyk, Charlotte M.

    2010-05-01

    Within the context of the Heidelberg Basin Project (Gabriel et al. 2008), we present the first results of three-dimensional structural modelling of the basin, based on interpretation of reflection seismics and decompaction using porosity data measured from core material. Firstly, we interpreted six horizons (Base Quaternary, Internal and Base Pliocene, Base Upper Miocene, Internal and Base Mid Miocene Hydrobien beds) from all available industrial (ca. 100 km) and our own reflection seismic sections (ca. 15 km), which lie within a 8 km radius around the Heidelberg UniNord 1/2 boreholes. This data was used to construct a three-dimensional geometrical model of the Heidelberg Basin. Using 300 core samples, we determined the porosity of the Quaternary sediments and constructed an exponential porosity/depth relationship for these rocks, which were then attributed to the model. Lower strata were given values from the literature. The model shows that the Heidelberg basin has a N-S and E-W areal extent of only 10 × 6 km, directly abutting the eastern fault boundary of the Upper Rhine Graben. The strongest synsedimentary tectonic subsidence occurred during the Upper Miocene, Upper Pliocene, and Quarternary. Faults are not seen within the basin at this level, but a NW-SE striking strike-slip structure is recorded to the west of the basin. Furthermore, the sedimentary depocentre shifted 2 km northwards over time to the present location, directly below the city of Heidelberg. We determined that Quaternary sediments have porosities of over 60% at the surface, but at the Base Quaternary porosity is less than 35%. This strong decrease means that 740 m of sediments were compacted to produce the present ca. 500 m thickness of Quaternary strata. Gabriel, G., Ellwanger, D., Hoselmann, C. & Weidenfeller, M. (2008): The Heidelberg Basin Drilling Project. -- Quaternary Science Journal, 57, 3-4, 253-260.

  13. Associações de espécies de peixes em ambientes lóticos da bacia do rio Iguatemi, Estado do Mato Grosso do Sul - DOI: 10.4025/actascibiolsci.v25i2.2024 Fish species associations in lotic environments in Iguatemi river basin, State of Mato Grosso do Sul - DOI: 10.4025/actascibiolsci.v25i2.2024

    Directory of Open Access Journals (Sweden)

    Miguel Petrere Junior

    2003-04-01

    Full Text Available Com o objetivo de descrever os padrões das associações entre espécies de peixes e sua distribuição nos ambientes lóticos ao nível da bacia, foram realizadas amostragens em 27 locais na bacia do rio Iguatemi-MS, distribuídas em quatro ambientes (rio Iguatemi, rio Jogui, rio Puitã e riachos. Os dados de presença/ausência das espécies que ocorreram em dois ou mais locais foram submetidos a métodos multivariados com o objetivo de descrever os principais padrões de associação entre espécies. A distribuição das espécies foi considerada determinística nessas comunidades (C-score = 17,33; P = 0,000, existindo diferença significativa entre os ambientes estudados (ANOSIM r = 0,082; P = 0,012, sendo constatada diferença entre rio Iguatemi e riachos (P = 0,001 e riachos e rio Jogui (P = 0,014. Constatamos uma clara segregação entre as espécies de riachos de cabeceiras e de trechos mais caudalosos dos rios ou mesmo de riachos com maior vazãoThe aim of this paper is to describe the patterns of associations between fish species and their distribution in lotic habitats at basin level. Samples were accomplished in 27 localities of Iguatemi river basin, distributed in four environments (Iguatemi river, Jogui river, Puitã river and streams. The presence/absence data of those species which occurred in 2 or more sites were submitted at multivariate methods with the aim to describe the major species associations. The species distribution was considered determinative in these communities (C-score = 17,33; P = 0,000, with significant difference among the studied environments (ANOSIM r = 0,082; P = 0,012, with verified difference between Iguatemi river and streams (P = 0,001 and also streams and Jogui river (P = 0,014. We verified a strong segregation among species from headstreams and more discharge river stretches or even larger streams

  14. RESERVES IN WESTERN BASINS PART IV: WIND RIVER BASIN

    Energy Technology Data Exchange (ETDEWEB)

    Robert Caldwell

    1998-04-01

    Vast quantities of natural gas are entrapped within various tight formations in the Rocky Mountain area. This report seeks to quantify what proportion of that resource can be considered recoverable under today's technological and economic conditions and discusses factors controlling recovery. The ultimate goal of this project is to encourage development of tight gas reserves by industry through reducing the technical and economic risks of locating, drilling and completing commercial tight gas wells. This report is the fourth in a series and focuses on the Wind River Basin located in west central Wyoming. The first three reports presented analyses of the tight gas reserves and resources in the Greater Green River Basin (Scotia, 1993), Piceance Basin (Scotia, 1995) and the Uinta Basin (Scotia, 1995). Since each report is a stand-alone document, duplication of language will exist where common aspects are discussed. This study, and the previous three, describe basin-centered gas deposits (Masters, 1979) which contain vast quantities of natural gas entrapped in low permeability (tight), overpressured sandstones occupying a central basin location. Such deposits are generally continuous and are not conventionally trapped by a structural or stratigraphic seal. Rather, the tight character of the reservoirs prevents rapid migration of the gas, and where rates of gas generation exceed rates of escape, an overpressured basin-centered gas deposit results (Spencer, 1987). Since the temperature is a primary controlling factor for the onset and rate of gas generation, these deposits exist in the deeper, central parts of a basin where temperatures generally exceed 200 F and drill depths exceed 8,000 feet. The abbreviation OPT (overpressured tight) is used when referring to sandstone reservoirs that comprise the basin-centered gas deposit. Because the gas resources trapped in this setting are so large, they represent an important source of future gas supply, prompting studies

  15. Avaliação da contaminação do Igarapé do Sabino (Bacia do Rio Tibiri por metais pesados, originados dos resíduos e efluentes do Aterro da Ribeira, em São Luís, Maranhão Evaluation of contamination on Sabino streamlet (Basin Rio Tibiri by heavy metals originated from waste and effluents of the Ribeira landfill, in São Luis island, state of Maranhão, Brazil

    Directory of Open Access Journals (Sweden)

    Antonio Eduardo Lopes Campos

    2009-01-01

    Full Text Available This work aimed to carry out an environmental monitoring in sabino narrow river (affluent of Tibiri Basin, in São Luís - MA, Brazil, in order to verify the main environmental impacts caused by effluent residues from Ribeira landfill. Chemical analysis and bibliographic and cartographic researches on this ecosystem were also carried out. In addition, heavy metals, such as Hg, Pb and Zn, were investigated in water samples by ICP-MS technique. It was observed that the contents of such heavy metals were above the tolerance limits established by the Brazilian legislation, showing a strong impact level on the evaluated ecosystem.

  16. Determinação de perdas de solo na bacia hidrográfica do córrego Ipiranga em Cidade Gaúcha, Estado do Paraná, com aplicação da Equação Universal de Perdas de Solo (EUPS = Estimates of soil losses in the Ipiranga river basin in Cidade Gaúcha, State of Paraná, with application of the Universal Soil Loss Equation (USLE

    Directory of Open Access Journals (Sweden)

    João Paulo Bueno do Prado

    2005-01-01

    Full Text Available Objetivando a predição das perdas de solo por erosão laminar na bacia do córrego Ipiranga no Município de Cidade Gaúcha, Estado do Paraná, foi empregada a Equação Universal de Perdas de Solo (EUPS com o auxílio de técnicas de geoprocessamento. O ambiente SIG permitiu a completa integração entre os dados, a obtenção dos parâmetros da EUPS e o cálculo das perdas de solo anuais e sazonais, considerando-se os diferentes tipos de solos e de usos e ocupação na área. Os resultadosobtidos associam as maiores perdas de solo às áreas cultivadas com cana-de-açúcar e mandioca (>20 ton.ha-1.no-1. A primavera é o período mais crítico para a erosão laminar enquanto que no outono são verificadas as taxas mais baixas de perdas de solo.The prediction of soil loss via laminar erosion at Ipiranga river basin, situated in Cidade Gaúcha county, State of Paraná, was carried out by applying both the Universal soil Loss Equation (USLE and the Geographic Information System (GIS. The GIS environment provided acomplete integration of the data, as well as helped the authors of this paper to obtain the USLE parameters and the calculus of the annual and seasonal soil losses, considering the different types of soil, their usage and the area cover-management. The results obtainedindicated a high soil loss in areas where sugar cane and manioc (>20 t.ha-1.no-1 are cultivated. Spring is the most critical period for laminar erosion, while autumn is the period which shows the smallest number of soil losses.

  17. Testing for Basins of Wada.

    Science.gov (United States)

    Daza, Alvar; Wagemakers, Alexandre; Sanjuán, Miguel A F; Yorke, James A

    2015-11-10

    Nonlinear systems often give rise to fractal boundaries in phase space, hindering predictability. When a single boundary separates three or more different basins of attraction, we say that the set of basins has the Wada property and initial conditions near that boundary are even more unpredictable. Many physical systems of interest with this topological property appear in the literature. However, so far the only approach to study Wada basins has been restricted to two-dimensional phase spaces. Here we report a simple algorithm whose purpose is to look for the Wada property in a given dynamical system. Another benefit of this procedure is the possibility to classify and study intermediate situations known as partially Wada boundaries.

  18. Comparison Between Water Level and Precipitation in Rio Negro Basin

    Science.gov (United States)

    Figliuolo, G. C.; Santos Da Silva, J.; Calmant, S.; Seyler, F.; Correia, F.; Oliveira, R. J.

    2013-12-01

    The Amazon Basin holds a lot of difficulties for providing data that enable regional researching works, because of its large extension and for having areas, whose access is very difficult. Remote sensing data presents an excellent way for monitoring the Amazon Basin and collecting data for researches. This current study aims matching radar altimetry data from the JASON-2, with the rainfall data from the TRMM satellite in order to analyze the relation between the water level and the precipitation in two different points along the Rio Negro Basin. After data analysis, it was possible noting a difference on the responding process for both regions. Whilst at the NEGRO_089_03 station (located in the city of São Gabriel da Cachoeira) the graphic of precipitation and water level were very similar, in NEGRO_063 station (located in the city of Manaus) the graphic showed a two month discrepancy due to the difference of the river's bottom size in both regions, at NEGRO_089_03's area for having a smaller river and the water level rises faster, whereas in NEGRO_063 the water level takes about two months to respond to precipitation.

  19. Time reduction in well construction with the addition of glass microspheres and thixotropic agents in cement slurries in zonal isolation at Solimoes Basin; Reducao do tempo de construcao de pocos de petroelo na Bacia do Solimoes atraves da utilizacao de microsferas de vidro e agentes tixotropicos nas fases de cimentacao

    Energy Technology Data Exchange (ETDEWEB)

    Ferreira, Cledeilson R.L.; Duque, Luis H.; Steffan, Rodolfo H.P.; Guimaraes, Zacarias [Baker Hyghes, Houston, TX (United States); Corregio, Fabio; Augusto, Marcelo; Mendes, Sandro C. [Petroleo Brasileiro S.A. (PETROBRAS), Rio de Janeiro, RJ (Brazil)

    2012-07-01

    One of the problems faced by the oil industry during the well construction is the damage effect of the hydrostatic head of cement slurries on unconsolidated reservoirs, trending to a necessity of lightweight cementing slurries with high resistance for zonal isolation. This paper presents experiences with lightweight cementing slurries obtained by the addition of glass microspheres and thixotropic agents in oil and gas wells located at Solimoes Basin - Amazon Basin, Brazil, which led to 100% time reduction on well construction when compared with the standard cementing procedures, besides the benefit of no reservoir damage. It also includes lab tests, cement slurry designs, case histories and results that allow a complete evaluation of the technique that can be applied in other similar environments. (author)

  20. Ocorrência e ecologia trófica de quatro espécies de Astyanax (Characidae em diferentes rios da bacia do rio Tibagi, Paraná, Brasil Occurrence and trophic ecology of four species of Astyanax (Characidae in different rivers of the Tibagi River Basin, Paraná, Brazil

    Directory of Open Access Journals (Sweden)

    Sirlei Terezinha Bennemann

    2005-09-01

    Full Text Available Na bacia do rio Tibagi, trechos dos rios Fortaleza, Iapó e Tibagi foram amostrados mensalmente, de maio de 2001 a abril de 2002, com tarrafas e redes de espera de diferentes malhagens. Foram capturados indivíduos de quatro espécies de Astyanax. Para conhecer como essas espécies utilizam o hábitat desses rios, foi calculada a constância, e as freqüências em número de exemplares foram comparadas pela análise de similaridade Bray-Curtis. A composição percentual dos alimentos consumidos foi ordenada usando-se a Análise de Componentes Principais (ACP. As proporções dos recursos alimentares foram avaliadas e classificadas quanto à natureza (animal ou material vegetal e origem (alóctone e autóctone. A constância e a baixa similaridade na abundância revelaram que as espécies têm preferências quanto ao porte do rio ou por determinado hábitat. Astyanax altiparanae Garutti & Britski, 2000 e A. fasciatus (Cuvier, 1819 ocorreram nos de maior porte, mas foram constantes somente no rio Tibagi. Astyanax eigenmanniorum (Cope, 1894 ocorreu em todos os rios, mas prefere hábitats próximos às desembocaduras de afluentes de grandes rios. Astyanax scabripinnis (Jenyns, 1842 esteve restrita ao Fortaleza, o rio de menor porte, subafluente do rio Tibagi. O número de itens alimentares consumidos variou de 11 a 23. Entre os alimentos principais, três itens foram comuns para as quatro espécies: restos de plantas (folhas e sementes de plantas terrestres, restos de insetos (de diferentes origens e não identificados e plantas aquáticas. Os vegetais e os insetos foram os principais alimentos para todas as espécies. A maior distinção na composição da dieta foi constatada para A. eigenmaniorum, devido à sua habilidade em explorar as plantas aquáticas, presentes em abundância, consumidas junto com carvão/sedimento, que estavam nas margens rochosas do rio Iapó. A similaridade quanto à origem e ao tipo de alimento consumido pelas quatro esp

  1. The Central European Permian Basins; Rheological and structural controls on basin history and on inter-basin connectivity

    NARCIS (Netherlands)

    Smit, Jeroen; van Wees, Jan-Diederik; Cloetingh, Sierd

    2014-01-01

    We analyse the relative importance of the major crustal-scale fault zones and crustal architecture in controlling basin formation, deformation and the structural connections between basins. The North and South Permian Basins of Central Europe are usually defined by the extend of Rotliegend

  2. Efeitos antrópicos sobre concentrações de metais alcalinos na região da microbacia do Arroio Araçá, Canoas - Rio Grande do Sul Anthropic effects on alkaline metal concentrations in the region of the Araçá stream micro-basin, Canoas - Rio Grande do Sul

    OpenAIRE

    Tania Renata Prochnow; Emerson Alberto Prochnow; Bernardo Liberman

    2009-01-01

    This work presents alterations in the concentrations of alkaline metals sodium, lithium and potassium, in abiotic compartments, at Araçá stream micro-basin, located in Canoas, RS. Its spring is located in a low populational density region and crosses an elevated environmental impacted urban area. Its final course crosses an agricultural area. Samples of atmospheric particulates, macrophites, water and sediments were analyzed. High concentrations of alkaline metals, related with draining of ri...

  3. Hydrologic Sub-basins of Greenland

    Data.gov (United States)

    National Aeronautics and Space Administration — The Hydrologic Sub-basins of Greenland data set contains Geographic Information System (GIS) polygon shapefiles that include 293 hydrologic sub-basins of the...

  4. Detention basin alternative outlet design study.

    Science.gov (United States)

    2016-10-01

    This study examines the outlets structures CDOT has historically employed to drain water quality treatment detention basins and flood control basins, presents two new methods of metering the water quality capture volume (WQCV), namely 1) the Elliptic...

  5. Meso and microscopic characterization of deformation bands in porous sandstones: an example on the Paleozoic, Pre- and Sin-rift sequences of the Araripe Basin, Northeast of Brazil; Caracterizacao meso e microscopica de bandas de deformacao em arenitos porosos: um exemplo nas tectonossequencias Paleozoica, Pre- e Sin-rifte da Bacia do Araripe, Nordeste do Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Araujo Neto, Joao Marculino de; Silva, Fernando Cesar Alves da; Sa, Emanuel Ferraz Jardim de [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil). Programa de Pos-Graduacao em Geodinamica e Geofisica], e-mails: jota_ex2@hotmail.com, fernando@geologia.ufrn.br, emanuel@ccet.ufrn.br

    2012-04-15

    Deformation bands are narrow tabular volumes developed in porous sandstones. Although these structures are a product of brittle deformation, they may have internally a continuous displacement gradient. When granular cataclasis is the dominant deformation mechanism, the initial properties of their host rocks (i.e., porosity and permeability) can change significantly. The deformation bands in sandstones from the pre- and syn-rift of the Araripe Basin were studied in meso and microscale in order to classify them and to understand the deformation mechanisms involved during their nucleation and development. Their geometric-spatial, kinematic, and rheological criteria allowed establishing relations between the origin of deformation bands and lithification of their host rocks. Additionally, some inferences on their influence to the fluid flow in the reservoir-scale were outlined. Moreover, the study of deformation bands contributed to the understanding of the tectonic evolution of the studied basin. Accordingly, the study of deformation bands can support research on local and regional aspects of the tectonosedimentary evolution of sedimentary basins. (author)

  6. Micro-analysis by U-Pb method using LAM-ICPMS and its applications for the evolution of sedimentary basins: the example from Brasilia Belt; Micro-analise pelo metodo U-Pb usando LAM-CIPMS e suas aplicacoes para a evolucao de bacias sedimentares: o exemplo da faixa Brasilia

    Energy Technology Data Exchange (ETDEWEB)

    Pimentel, Marcio Martins; Matteini, Massimo; Junges, Sergio Luiz; Giustina, Maria Emilia Schutesky Della; Dantas, Elton Luiz; Buhn, Bernhard, E-mail: marcio@unb.br [Universidade de Brasilia (UnB), DF (Brazil). Instituto de Geociencias; Rodrigues, Joseneusa Brilhante [Servico Geologico do Brasil (CPRM), Brasilia, DF (Brazil)

    2015-07-01

    The U-Pb geochronological method using LAM-MC-ICPMS represents an important tool to investigate the geological evolution of sedimentary basins, as well as its geochronology, through the determination of upper limits for the depositional ages of detrital sedimentary rocks. The method has been applied in the Geochronology Laboratory of the Universidade de Brasilia, and in this study, a brief review of the provenance data for the sediments of the Neoproterozoic Brasilia Belt is presented and their significance for the evolution of the orogen is discussed. The results indicate that the Paranoa and Canastra Groups represent passive margin sequences formed along the western margin of the Sao Francisco-Congo continent. The Vazante Group presents similar provenance patterns, although Sm-Nd isotopic results suggest that its upper portions had contributions from younger (Neoproterozoic) sources, possibly from the Neoproterozoic Goias Magmatic Arc. On the other hand, metasediments of the Araxa and Ibia groups contain an important proportion of material derived from Neoproterozoic sources, demonstrating that they represent syn-orogenic basins. The provenance pattern of the Bambui Group is marked by an important Neoproterozoic component, showing that it constitutes a sedimentary sequence which is younger than 600 Ma, representing a foreland basin to the Brasilia Belt. (author)

  7. Filosofia da análise da estabilidade da liquidez

    Directory of Open Access Journals (Sweden)

    Rodrigo Antônio Chaves da Silva

    2005-07-01

    Full Text Available A informação foi considerada finalidade de nosso conhecimento, até o período em os pensadores e pesquisadores da contabilidade passaram a raciocinar sobre o conteúdo e o significado dos informes. Nesta busca da razão sobre os estados patrimoniais, surgiu a análise contábil que procura por meio de relações e identidades, o significado da dinâmica expressa da estaticamente na informação. O primeiro aspecto que surgiu no objeto de análise foi o estudo da liquidez, que é um dos principais exercícios do patrimônio. A estabilidade também é outro exercício básico e imprescindível, pois este é que promove o equilíbrio do organismo administrativo. A ciência contábil após a sua dignidade científica passou a trilhar caminhos esplendorosos, amparados em doutrina que permite alcançar os píncaros filosóficos. Os estudos concernentes aos aspectos de interação da estabilidade na liquidez são, complexos e somente com os recursos filosóficos da contabilidade se pode estudá-los com o panorama holístico e sublime. A filosofia da contabilidade não é alheia às suas práticas tecnológicas, podendo buscar pontos sublimes de panoramas abrangentes, para o estudo analítico da liquidez e estabilidade, observando todas as dimensionalidades e essencialidades de acontecimentos, na comprovação e orientação dos estados de ineficácia e eficácia patrimonial.

  8. 77 FR 45653 - Yakima River Basin Conservation Advisory Group; Yakima River Basin Water Enhancement Project...

    Science.gov (United States)

    2012-08-01

    ...; Yakima River Basin Water Enhancement Project, Yakima, WA AGENCY: Bureau of Reclamation, Interior. ACTION... Basin Conservation Advisory Group, Yakima River Basin Water Enhancement Project, established by the... future projects being funded with Yakima River Basin Water Enhancement Project funds. The CAG will also...

  9. Distinct trends in the speciation of iron between the shallow shelf seas and the deep basins of the Arctic Ocean

    NARCIS (Netherlands)

    Thuróczy, C.-E.; Gerringa, L.J.A.; Klunder, M.; Laan, P.; Le Guitton, M.; de Baar, H.J.W.

    2011-01-01

    The speciation of iron was investigated in three shelf seas and three deep basins of the Arctic Ocean in 2007. The dissolved fraction (<0.2 mu m) and a fraction < 1000 kDa were considered here. In addition, unfiltered samples were analyzed. Between 74 and 83% of dissolved iron was present in the

  10. Evaluation of SAC-SMA and HSPF rainfall-runoff simulations in upper parts of Vltava basin

    Czech Academy of Sciences Publication Activity Database

    Košková, Romana; Buchtele, Josef; Vološ, B.

    2005-01-01

    Roč. 7, - (2005), nestr. ISSN 1029-7006 R&D Projects: GA AV ČR KJB3060302; GA AV ČR(CZ) IAA3017301 Keywords : rainfall-runoff simulations * Vltava basin * SAC-SMA and HSPF model Subject RIV: DA - Hydrology ; Limnology

  11. Canada Basin Acoustic Propagation Experiment (CANAPE)

    Science.gov (United States)

    2015-09-30

    1 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Canada Basin Acoustic Propagation Experiment (CANAPE...about Arctic acoustics during the Cold War is now obsolete. The goal of the Canada Basin Acoustic Propagation Experiment (CANAPE) is to determine the...Canada Basin (McLaughlin et al., 2011). These changing conditions make the Canada Basin an ideal location to test the hypothesis put forward by P

  12. Implementing Integrated River Basin Management in China

    NARCIS (Netherlands)

    Boekhorst, D.G.J. te; Smits, A.J.M.; Yu, X.; Lifeng, L.; Lei, G.; Zhang, C.

    2010-01-01

    This paper examines the role of the World Wildlife Fund for Nature China as policy entrepreneur in China. It illustrates the ways in which the World Wildlife Fund for Nature is active in promoting integrated river basin management in the Yangtze River basin and how the efforts at basin level are

  13. Supplementary information on K-Basin sludges

    International Nuclear Information System (INIS)

    MAKENAS, B.J.

    1999-01-01

    Three previous documents in this series have been published covering the analysis of: K East Basin Floor and Pit Sludge, K East Basin Canister Sludge, and K West Basin Canister Sludge. Since their publication, additional data have been acquired and analyses performed. It is the purpose of this volume to summarize the additional insights gained in the interim time period

  14. On the significance of ELF basins

    Indian Academy of Sciences (India)

    Unknown

    to complement to chemical intuition (see, e.g., refs. 2, 3). In a mathematically more rigorous way, such regions, ELF basins,4 were defined following the spirit of Bader's Atoms in Molecules (AIM). All points in space which lead to the a given maximum of ELF, by following the gradient of ELF, belong to the same basin. Basins ...

  15. Supplementary information on K-Basin sludges

    Energy Technology Data Exchange (ETDEWEB)

    MAKENAS, B.J.

    1999-03-15

    Three previous documents in this series have been published covering the analysis of: K East Basin Floor and Pit Sludge, K East Basin Canister Sludge, and K West Basin Canister Sludge. Since their publication, additional data have been acquired and analyses performed. It is the purpose of this volume to summarize the additional insights gained in the interim time period.

  16. Proterozoic intracontinental basin: The Vindhyan example

    Indian Academy of Sciences (India)

    The Vindhyan basin is a classic example of Proterozoic intracontinental basin that developed in the central part of the Indian shield along with several other basins such as Cuddapah,Chattisgarh,etc.The strata are exposed in three major sectors:Son valley,Bundelkhand and Rajasthan. Substantially thick Vindhyan rocks ...

  17. BASIN: Beowulf Analysis Symbolic INterface

    Science.gov (United States)

    Vesperini, Enrico; Goldberg, David M.; McMillan, Stephen L. W.; Dura, James; Jones, Douglas

    2013-08-01

    BASIN (Beowulf Analysis Symbolic INterface) is a flexible, integrated suite of tools for multiuser parallel data analysis and visualization that allows researchers to harness the power of Beowulf PC clusters and multi-processor machines without necessarily being experts in parallel programming. It also includes general tools for data distribution and parallel operations on distributed data for developing libraries for specific tasks.

  18. Great Basin paleoenvironmental studies project

    International Nuclear Information System (INIS)

    1993-01-01

    Project goals, project tasks, progress on tasks, and problems encountered are described and discussed for each of the studies that make up the Great Basin Paleoenvironmental Studies Project for Yucca Mountain. These studies are: Paleobotany, Paleofauna, Geomorphology, and Transportation. Budget summaries are also given for each of the studies and for the overall project

  19. Evolution of the Congo Basin

    Science.gov (United States)

    Glasmacher, U. A.; Bauer, F. U.; Kollenz, S.; Delvaux, D.

    2012-04-01

    The Congo Basin is one of the largest basins in the World with very little knowledge on the geological evolution as well as the oil and gas potential. In the past, oil seeps are recorded in the central part of the basin. Four sides in the Congo basin have been drilled so far. The cores of the two drill sides Dekese and Samba are located at the Musée royal de l'Afrique Centrale, Belgium. In a reconnaissance survey, we sampled both drill cores in a nearly even spacing of ~ 150 m covering the whole stratigraphy from Albian to Proterozoic. The red and green to grey sandstone samples were prepared by usual heavy minerals separation technique. Most of the samples revealed enough apatite and zircon grains for the two thermochronometric techniques fission track and (U-Th-Sm)/He. The time-temperature (t-T) evolution for the two drill locations were modelled by using the determined thermochronological data within the software code HeFTy. We tested various geological evolutionary constrains. Both techniques provide us information on the thermal and exhumation of the possible source area and on the drill location by themselves.

  20. Coastal inlets and tidal basins

    NARCIS (Netherlands)

    De Vriend, H.J.; Dronkers, J.; Stive, M.J.F.; Van Dongeren, A.; Wang, J.H.

    2002-01-01

    lecture note: Tidal inlets and their associated basins (lagoons) are a common feature of lowland coasts all around the world. A significant part ofthe world's coastlines is formed by barrier island coasts, and most other tidal coasts are interrupted by estuaries and lagoon inlets. These tidal

  1. The Amazon Basin in transition

    Science.gov (United States)

    Eric A. Davidson; Alessandro C. de Araujo; Paulo Artaxo; Jennifer K. Balch; I. Foster Brown; Mercedes M.C. Bustamente; Michael T. Coe; Ruth S. DeFriess; Michael Keller; Marcos Longo; J. William Munger; Wilfrid Schroeder; Britaldo Soares-Filho; Carlos M. Souza, Jr.; Steven C. Wofsy

    2012-01-01

    Agricultural expansion and climate variability have become important agents of disturbance in the Amazon basin. Recent studies have demonstrated considerable resilience of Amazonian forests to moderate annual drought, but they also show that interactions between deforestation, fire and drought potentially lead to losses of carbon storage and changes in regional...

  2. L-Reactor 186-basin cleaning alternatives

    International Nuclear Information System (INIS)

    Turcotte, M.D.S.

    1983-01-01

    Operation of L Reactor will necessitate annual cleaning of the L Area 186 basins. Alternatives are presented for sediment discharge due to 186-basin cleaning activities as a basis for choosing the optimal cleaning method. Current cleaning activities (i.e. removal of accumulated sediments) for the P, C and K-Area 186 basins result in suspended solids concentrations in the effluent waters above the NPDES limits, requiring an exemption from the NPDES permit for these short-term releases. The objective of mitigating the 186-basin cleaning activities is to decrease the suspended solids concentrations to within permit limits while continuing satisfactory operation of the basins

  3. Estudo da dinâmica de macroalgas em flutuantes de duas comunidades ribeirinhas na bacia do Tarumã-Mirim (área rural de Manaus/AM por alunos do ensino fundamental / STUDY OF THE DYNAMICS OF FLOATING MACROALGAL IN TWO COMMUNITIES IN RIPARIAN BASIN TARUMÃ-MIRIM (RURAL AREA OF MANAUS / AM BY STUDENTS OF BASIC EDUCATION

    Directory of Open Access Journals (Sweden)

    Domitila Pascoaloto

    2010-05-01

    Full Text Available O presente estudo faz parte de um projeto voltado para Educação ambiental na bacia do Tarumã-Mirim. Em abril/2008 seis alunos do ensino fundamental acompanharam, por quinze dias, a presença de macroalgas em três flutuantes da comunidade Nossa Senhora de Fátima, a flutuação do nível do igarapé nesses flutuantes e a distância entre a sede da comunidade o porto principal. Também foi feito o levantamento das macroalgas na comunidade Nossa Senhora do Livramento. Macroalgas estiveram presentes em todos os locais, em ambas as comunidades. A distância entre a sede da comunidade e o flutuante principal variou 1,4 metros; a variação do nível de água no igarapé foi de 0,33 a 0,92 metros. As características químicas da água foram semelhantes (ácidas e pouco mineralizadas. Os alunos verificaram que a presença das macroalgas esteve mais relacionada com as características físicas dos locais (substrato estável e incidência de luz solar.

  4. Offshore waste management monitoring system: drilling campaign BM-CAL-4 Block, Camanu-Almada Basin, Bahia, Brazil; Gestao de rejeitos offshore em areas sensiveis e ambientes isolados - estudo de caso: campanha exploratoria da El Paso no Bloco BM-CA-4, Bacia de Camamu-Almada, Bahia, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Ranieri, Adriano [El Paso Oleo e Gas, Natal, RN (Brazil); Perez, Pedro; Andrade, Albert [EnvironPact, Rio de Janeiro, RJ (Brazil)

    2008-07-01

    The present paper addresses the principal aspects related to the difficulties found to implement a pollution control project in sensitive areas and isolated environments. For that, it was utilized a case study on the El Paso's second exploratory campaign on BM-CAL-4 Block, located in Camamu Almada Basin, Bahia - Brazil. Two of the items of the pollution control project implemented on this campaign where herein detailed: drilling wastes management and waste management on the smaller vessels, which had to attend to the same requirements applied to the supply vessels and the drilling rig, due to the discharge restrictions established by the environmental agency. (author)

  5. Estudo de coprólito da bacia sedimentar do Araripe por meios de espectroscopia FT-IR e difração de Raios-X Study of coprolites from the Araripe sedimentary basin through FT-IR spectroscopy and x-ray diffraction

    Directory of Open Access Journals (Sweden)

    Ricardo Jorge Cruz Lima

    2007-01-01

    Full Text Available Coprolites are fossilized faeces that constitute an important source of palaeobiological informations. This paper describes the characterization of some coprolite materials originated from the Romualdo Member of the Santana Formation (Araripe Basin, south of Ceará State in Brazil by means of two techniques: X-ray powder diffraction and Fourier transform infrared spectroscopy (FT-IR. This characterization allowed us to determine the main composition of the coprolites, of the nodulus (where the coprolites were extracted and of the sediment (where the nodulus was found suggesting that the material was produced by a carnivorous fish of the Lower Cretaceous.

  6. Efeitos antrópicos sobre concentrações de metais alcalinos na região da microbacia do Arroio Araçá, Canoas - Rio Grande do Sul Anthropic effects on alkaline metal concentrations in the region of the Araçá stream micro-basin, Canoas - Rio Grande do Sul

    Directory of Open Access Journals (Sweden)

    Tania Renata Prochnow

    2009-01-01

    Full Text Available This work presents alterations in the concentrations of alkaline metals sodium, lithium and potassium, in abiotic compartments, at Araçá stream micro-basin, located in Canoas, RS. Its spring is located in a low populational density region and crosses an elevated environmental impacted urban area. Its final course crosses an agricultural area. Samples of atmospheric particulates, macrophites, water and sediments were analyzed. High concentrations of alkaline metals, related with draining of rice fields or with the ground type, as well as correlations among its concentrations with regional activities were verified. Tripogandra diurética has shown bioaccumulation compatible with their concentrations on waters.

  7. Modelling Forearc Basin Formation and Stratigraphy

    Science.gov (United States)

    Mannu, Utsav; Ueda, Kosuke; Willett, Sean; Gerya, Taras; Strasser, Michael

    2017-04-01

    Comparison of synthetic stratigraphy of forearc basins as generated in coupled plate subduction and accretionary wedge models to the stratal patterns observed for forearc basins in nature, could be used to ascertain the dynamic consistency of the interpreted deformational history of the wedge. Additionally, it could help us understand the emergence of stratigraphic patterns in forearc basins as an interplay between sedimentary flux and wedge dynamics. Here we present a simple methodology to generate synthetic stratigraphy by emplacing isochronal surfaces during the evolution of the wedge. We use a dynamic 2D, high-resolution, thermo-mechanical, subduction model coupled to an adaptive irregular surface grid to model the free surface. In this model, we track basin stratigraphy developing in the wedge top basins atop the accretionary prism by emplacing lines of Lagrangian markers at discrete times along the upper surface of the model, which subsequently are buried, transported, and deformed according to the velocity field generated in the model. We conduct numerical experiments to identify the stratigraphic signatures of different forearc basin formation mechanisms. We also study the impact of hinterland and trench sedimentation on the wedge evolution and its impact on forearc basin formation. Forearc basins that form on top of the overriding plate remain passive to the deformation history of the wedge. Forearc basins formed as negative alpha basins remain mostly undeformed. Forearc basins that form due to wedge stabilization exhibit landward tilting of strata with time. We also find that trench sedimentation enhances the landward tilting of the basin by shifting deformation landwards and potentially triggering out-of-sequence-thrust emergence/reactivation. Predicted stratigraphic features in our numerical models agree well with stratigraphic patterns observed in different types of forearc basins in the Nankai Trough, Sunda Strait and Lombok Basin offshore Japan, Java

  8. THE ADVANCED CHEMISTRY BASINS PROJECT

    Energy Technology Data Exchange (ETDEWEB)

    William Goddard; Peter Meulbroek; Yongchun Tang; Lawrence Cathles III

    2004-04-05

    In the next decades, oil exploration by majors and independents will increasingly be in remote, inaccessible areas, or in areas where there has been extensive shallow exploration but deeper exploration potential may remain; areas where the collection of data is expensive, difficult, or even impossible, and where the most efficient use of existing data can drive the economics of the target. The ability to read hydrocarbon chemistry in terms of subsurface migration processes by relating it to the evolution of the basin and fluid migration is perhaps the single technological capability that could most improve our ability to explore effectively because it would allow us to use a vast store of existing or easily collected chemical data to determine the major migration pathways in a basin and to determine if there is deep exploration potential. To this end a the DOE funded a joint effort between California Institute of Technology, Cornell University, and GeoGroup Inc. to assemble a representative set of maturity and maturation kinetic models and develop an advanced basin model able to predict the chemistry of hydrocarbons in a basin from this input data. The four year project is now completed and has produced set of public domain maturity indicator and maturation kinetic data set, an oil chemistry and flash calculation tool operable under Excel, and a user friendly, graphically intuitive basin model that uses this data and flash tool, operates on a PC, and simulates hydrocarbon generation and migration and the chemical changes that can occur during migration (such as phase separation and gas washing). The DOE Advanced Chemistry Basin Model includes a number of new methods that represent advances over current technology. The model is built around the concept of handling arbitrarily detailed chemical composition of fluids in a robust finite-element 2-D grid. There are three themes on which the model focuses: chemical kinetic and equilibrium reaction parameters, chemical

  9. Gênese e classificação de alguns solos da bacia do Ribeirão Tijuco Preto, Município de Rio das Pedras, SP: I - Análise mineralógica quantitativa da fração argila Genesis and classification of some soils from the hydrographic basin of Tijuco Preto Stream, Rio das Pedras county, SP: I - Quantitative mineralogical analysis of clay fraction

    Directory of Open Access Journals (Sweden)

    E. H. Escobar

    1973-01-01

    Full Text Available Foi empregada a análise mineralógica quantitativa no estudo das frações argila fina e argila grossa de quatro perfis de solos. Dois perfis são originados de um siltito da formação Corumbataí, e foram coletados numa mesma encosta. O primeiro deles, um Litossolo fase folhelho-argilito (TP-12, se encontra num estádio de intemperização inferior ao Podzólico Vermelho-Amarelo variação Piracicaba (TP-13, indicado pelo seu menor conteúdo de caulinita (31,5% na fração argila grossa do B2 em relação ao perfil TP-13 (52% no B22t. Esse resultado é confirmado pelo valor do intemperismo médio do TP-12, que é inferior ao do TP-13. Fazendo parte da mesma toposseqüência. numa posição mais elevada, encontra-se um Latossolo Vermelho-Escuro orto (TP-17, proveniente de um material de origem não identificado, que contém contribuição de rochas básicas, revelado pelo teor de 14% de Fe2O3. Esse latossolo apresentou como componente principal da fração argila grossa a caulinita (74,5%, seguindo-se a alofana (14,0%, gibbsita (3,7%, mica (2,9% e vermiculita (0,3%. Esses valores representam a média do perfil. As partes mais altas da bacia são ocupadas por um Latossolo Roxo, cujo perfil TP-18 apresentou a caulinita como principal componente (70,0% da fração argila grossa, seguindo-se-lhe a alofana (20,0%, a gibbsita (9,2%, a mica (0,9% e a vermiculita (0,6%. Tendo tomado o teor de gibbsita, ou o valor do Ki, como índice de intemperismo, verificou-se que esse latossolo é menos intemperizado do que um perfil de Latossolo Roxo de Campinas, situado também na depressão periférica. O mesmo acontece em relação a 10 perfis de Latossolo Roxo do planalto ocidental de São Paulo.The four soil profiles studied occur on a toposequence. The less weathered soils, a Lithosol-argilite-shale substratum phase (TP-12 and a Red-Yellow Podzolic Soil Piracicaba variation (TP-13 are located on the lower part of the toposequence. Both soils are derived from

  10. Capacidade da Typha dominguensis na fitorremediação de efluentes de tanques de piscicultura na Bacia do Iraí - Paraná Capacity of Typha dominguensis in phytoremediation of fish pond effluents in Iraí Basin - Paraná

    Directory of Open Access Journals (Sweden)

    Ana P. L. Martins

    2007-06-01

    Full Text Available A eutrofização é caracterizada por um processo no qual um corpo d'água adquire altos níveis de nutrientes, especialmente nitratos e fosfatos, provocando o posterior acúmulo de matéria orgânica e sua decomposição. Uma das alternativas para a descontaminação ambiental é o uso da fitorremediação. O objetivo principal do trabalho foi testar a capacidade da Typha dominguensis na minimização da eutrofização da água de tanques de piscicultura. A partir da água dos tanques da Estação Experimental do Canguiri - UFPR, instalou-se um experimento para cultivo da espécie Typha dominguensis sob diferentes níveis tróficos em sistema fechado. Os tratamentos são representados por cinco níveis de nitrogênio (N e fósforo (P, arranjados em esquema fatorial em delineamento inteiramente casualizado com seis repetições. Após 160 dias de cultivo, as plantas foram coletadas e analisadas em relação ao desenvolvimento e composição química da parte aérea. A capacidade extratora das plantas foi avaliada através da sua biomassa acumulada e do teor de nutrientes na matéria seca e remanescente na água. No melhor tratamento, observou-se uma remoção na água de até 87% de N e 54% de P adicionados, significando ser uma planta bastante promissora nesta linha de investigação.Eutrophication is characterized by a process in which a water body acquires high levels of nutrients, especially phosphates and nitrates, resulting in organic matter accumulation with further decomposition. One of the alternatives for environmental descontamination is the use of phytoremediation. The objective of this investigation was to test the capacity of Typha dominguensis in reducing eutrophication in fish pond effluents. An experiment was installed at Canguiri Research Station, at the Federal University of Paraná, using water from fish ponds. Typha dominguensis, being the test plant, was grown under five levels of N and P in factorial combination with six

  11. Improving Hydrologic Prediction at the Basin Scale through State Updating

    Science.gov (United States)

    Weerts, A.; Kockx, A.; Schellekens, J.; Drost, N.; Tretjakova, D.; Ren, J.; Lopez Lopez, P.; Hut, R.

    2015-12-01

    Data assimilation (DA) holds considerable potential for improving hydrologic predictions. However, advances in hydrologic DA research have not been adequately or timely implemented in operational forecast systems to improve the skill of forecasts for better informed real-world decision making. Several challenges exist (see Liu et al., 2012). The objective of this paper is to highlight several recent studies on basin scale data assimilation using distributed hydrologic models that touch upon these challenges including application of streamflow data assimilation using different algorithms, combined streamflow/snow data assimilation and the development of a generic linkage of OpenDA and the open source hydrologic package Openstreams/Wflow based on the (emerging) standard Basic Model Interface (BMI) as advocated by CSDMS using cross-platform webservices (i.e. Apache Thrift). Liu et al., 2012. Advancing data assimilation in operational hydrologic forecasting: progresses, challenges, and emerging opportunities, Hydrol. Earth Syst. Sci., 16, 3863-3887, doi:10.5194/hess-16-3863-2012.

  12. Production strategy and technological challenges arisen with the low permeability gas reservoirs in the Mexilhao, Urugua and Tambau Fields, Campos Basin, Southeast, Brazil; Estrategia de producao e desafios tecnologicos no desenvolvimento da producao de gas nos reservatorios de baixa permeabilidade dos Campos de Mexilhao, Urugua e Tambau, Bacia de Santos

    Energy Technology Data Exchange (ETDEWEB)

    Barroso, Alberto da Silva; Silva, Celso Tarcisio de Souza; Pires, Luis Carlos Gomes; Damasceno, Luis Carlos; Filoco, Paulo Roberto [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil)

    2008-07-01

    Mexilhao, Urugua and Tambau Fields are located in the North part of the Santos Basin will produce together 18 106 m3/d of gas and 45 000 bbl/d of oil and condensate. Besides the contribution to attend the country gas demand the production of these fields starts the establishment of a minimum gas production, transportation and processing infra-structure, that are flexible enough to permit increasing in production from possible upsides. This new production pole has a strategic importance because it will increment gas production close to the main brazilian consumer center. Mexilhao, Urugua and Tambau Fields are located in the North part of the Santos Basin will produce together 18 106 m3/d of gas and 45 000 bbl/d of oil and condensate. Besides the contribution to attend the country gas demand the production of these fields starts the establishment of a minimum gas production, transportation and processing infra-structure, that are flexible enough to permit increasing in production from possible upsides. This new production pole has a strategic importance because it will increment gas production close to the main brazilian consumer center.(author)

  13. Dieta de Astyanax asuncionensis (Characiformes, Characidae, em riachos da bacia do rio Cuiabá, Estado do Mato Grosso - DOI: 10.4025/actascibiolsci.v30i1.1442 Diet of Astyanax asuncionensis (Characiformes, Characidae, in streams of the Cuiabá river basin, Mato Grosso State - DOI: 10.4025/actascibiolsci.v30i1.1442

    Directory of Open Access Journals (Sweden)

    Gisele Caroline Novakowski

    2008-03-01

    Full Text Available A dieta de Astyanax asuncionensis, em riachos da bacia do rio Cuiabá, Estado do Mato Grosso, durante períodos de chuva e seca, foi descrita, sendo suas variações associadas ao grau de integridade da vegetação ciliar. Para isso, foram realizadas amostragens mensais, entre janeiro e dezembro de 2003, em quatro riachos, com o emprego de pesca elétrica. Foram analisados 213 estômagos, e a dieta foi descrita por meio das porcentagens de ocorrência e volume, combinados ao Índice Alimentar (IAi. Os aspectos da dieta abordados consistiram na composição, na origem dos recursos e na amplitude do nicho alimentar (Índice de Levins. O espectro alimentar incluiu 22 itens, sendo que os recursos alóctones dominaram, principalmente insetos, independente do local e período. A amplitude do nicho alimentar foi, em geral, maior no período de chuva. Os resultados obtidos mostraram que essas populações de A. asuncionensis são sustentadas por recursos de origem terrestre, especialmente Hymenoptera e demonstram a importância da mata ciliar no aporte de alimento. Considerando que os riachos apresentam diferentes graus de degradação da mata ciliar, estes resultados indicam que a manutenção da vegetação e a recuperação das áreas degradadas é condição altamente relevante para manutenção desta espécie nestes riachosThe goal of this study was to assess the diet of A. asuncionensis in four streams. Fish samples were carried out monthly from January to December 2003, using electrofishing. Stomach contents of 213 individuals were analyzed, and the diet was described as for occurrence and volumetric percentage of each item combined in a feeding index (IAi. The diet composition, importance of allochthonous and autochthonous resources, and diet breadth (Levin’s index were assessed among streams and between seasons (dry and rainy. The diet was composed of 22 feeding items; allochthonous resources (especially insects dominated the diet in all

  14. Composição específica e abundância da ictiofauna do rio dos Padres, bacia do rio Iguaçu, Brasil = Specific composition and abundance of the ichthyofauna from Padres’ river, Iguaçu river basin, Brazil

    Directory of Open Access Journals (Sweden)

    Alessandro Gasparetto Bifi

    2006-07-01

    Full Text Available A composição e estrutura das comunidades de peixes podem ser consideradas como indicadores ecológicos e ambientais, constituindo-se desta forma como ferramenta para o manejo de bacias hidrográficas. O presente estudo objetivou levantar informaçõessobre a composição específica e abundância da ictiofauna do rio dos Padres. Foram realizadas amostragens trimestrais pelo método da pesca elétrica em dois pontos de coleta, um próximo à nascente e outro nas proximidades da foz. As coletas resultaram na captura de 7.026 exemplares pertencentes a 12 espécies distribuídas em sete famílias. A nascente apresentou uma alta densidade em número de indivíduos e menores valores de diversidade, eqüitabilidade e riqueza de espécies em relação à foz. O levantamento da composição específica e abundância da ictiofauna de um rio é de grande importância, por fornecer subsídio a futuros manejos e monitoramentos, tanto da comunidade aquática quanto do ambiente.The composition and structure of fish community can be considered ecological and environmental indicators. The present study aimed to survey information about the specific composition and abundance of theichthyofauna from Padres’ River. Quarterly samplings were accomplished by the method of the electrofishing in two sample sites, one close to the headwater and another in the proximities of the mouth. The collections resulted in the capture of 7026 specimens belonging to 12 species, which, in turn, fit in seven different families. The headwater presented a high density in number of individuals and smaller values of diversity, evenness and richness of species in relation to the mouth. The raising of the specific composition and abundance of the ichthyofauna of a river is of great importance for supplying subsidy to future managements and accompaniment, as much of the aquatic community as of the environment.

  15. A Sintaxe da Janela

    Directory of Open Access Journals (Sweden)

    Luís Antônio Jorge

    1993-12-01

    Full Text Available A preocupação fundamenta! do trabalho é de caráter ontológico: esboçar o problema das significações apriorísticas e autônomas dos elementos que compõem a sintaxe arquitetônica. O trabalho elege um desses elementos: a janela. Este artigo parte da aproximação histórica entre a janela e a secção da pirâmide visual, construção imaginária da teoria da perspectiva renascentista. A consideração da janela na linguagem arquitetônica implica reconhecer uma ambigüidade essencial: a janela deve inserir-se ordenadamente no plano da parede - raciocínio típico da modenatura - mas também relacionar-se com a imagem vista através dela, que extrapola o plano, ressaltando a tridimensionalidade - herança da perspectiva renascentista, fundamentada no espaço euclidiano. Ver janela ou ver através da janela são alternativas que se colocam tanto ao observador interno ao edifício, quanto ao externo. Texto de duplaface, a sintaxe da janela versa sobre o relacionamento desses dois lados

  16. The sedimentary basins of Tanzania - reviewed

    Science.gov (United States)

    Mbede, E. I.

    The sedimentary basins of Tanzania have been classified into four morphotectonic groups: the coastal basin, the Karoo rift basins, basins found within the present East African rift valley and the cratonic sag basins. Except for the cratonic sag basins, each of these basin group has been affected by rifting at one time or another. The geology of each basin is discussed, structural evolution is evaluated and the prospectivity is thence looked into. Coal is exploited at Songwe-Kiwira coalfield and is found in potentially economic quantities in other Karoo basins. Prospecting for hydrocarbon resources has been going on since the 50s. Gas has been discovered in Songosongo and Mnazi bay fields, uneconomical quantities of oil have also been reported in Songosongo. Being basically rift basins which have reached different stages of development, source rocks normally associated with Initial-rifting, synrifting as well as post-rifting processes are probably well developed. Reservoir rocks, traps and cap rocks are normally not rare in such tectonic environments. Thermal gradients associated with the rifting stage are normaly high to effect maturation of source rocks even at low sedimentary thicknesses. Studies done so far are still inconclusive, because while testing has mainly been focused on structural traps stratigraphic traps seems to be more promising.

  17. Uranium geochemistry of Orca Basin

    International Nuclear Information System (INIS)

    Weber, F.F. Jr.; Sackett, W.M.

    1981-01-01

    Orca Basin, an anoxic, brine-filled depression at a depth of 2200 m in the Northwestern Gulf of Mexico continental slope, has been studied with respect to its uranium geochemistry. Uranium concentration profiles for four cores from within the basin were determined by delayed-neutron counting. Uranium concentrations ranged from 2.1 to 4.1 ppm on a salt-free and carbonate-corrected basis. The highest uranium concentrations were associated with the lowest percentage and delta 13 C organic carbon values. For comparison, cores from the brine-filled Suakin and Atlantis II Deeps, both in the Red Sea, were also analyzed. Uranium concentrations ranged from 1.2 to 2.6 ppm in the Suakin Deep and from 8.0 to 11.0 ppm in the Atlantis II Deep. No significant correlation was found between uranium concentrations and organic carbon concentrations and delta 13 C values for these cores. Although anoxic conditions are necessary for significant uranium uptake by non-carbonate marine sediments, other factors such as dilution by rapidly depositing materials and uranium supply via mixing and diffusion across density gradients may be as important in determining uranium concentrations in hypersaline basin sediments. (author)

  18. K West Basin canister survey

    International Nuclear Information System (INIS)

    Pitner, A.L.

    1998-01-01

    A survey was conducted of the K West Basin to determine the distribution of canister types that contain the irradiated N Reactor fuel. An underwater camera was used to conduct the survey during June 1998, and the results were recorded on videotape. A full row-by-row survey of the entire basin was performed, with the distinction between aluminum and stainless steel Mark 1 canisters made by the presence or absence of steel rings on the canister trunions (aluminum canisters have the steel rings). The results of the survey are presented in tables and figures. Grid maps of the three bays show the canister lid ID number and the canister type in each location that contained fuel. The following abbreviations are used in the grid maps for canister type designation: IA = Mark 1 aluminum, IS = Mark 1 stainless steel, and 2 = Mark 2 stainless steel. An overall summary of the canister distribution survey is presented in Table 1. The total number of canisters found to contain fuel was 3842, with 20% being Mark 1 Al, 25% being Mark 1 SS, and 55% being Mark 2 SS. The aluminum canisters were predominantly located in the East and West bays of the basin

  19. A dinâmica atmosférica na vertente oriental da bacia do alto rio Paraná e a gênese das chuvas = The atmospheric dynamics on the eastern slope of the Paraná river basin and the genesis of rain

    Directory of Open Access Journals (Sweden)

    Victor da Assunção Borsato

    2008-07-01

    Full Text Available O ritmo dos sistemas atmosféricos e a intensidade variam no tempo e noespaço. Por isso, para caracterizar a dinâmica climática de uma região é necessário estudar a dinâmica das massas de ar ao longo de uma série. Estudaram-se, por meio da dinâmica das massas de ar, a participação dos sistemas atmosféricos atuantes e as porcentagens das chuvas convectivas e frontais ao longo da vertente oriental da bacia do alto rio Paran��. Verificou-se que, nessa vertente, nos meses mais frios, predomina a atuação da massa tropical Atlântica e da polar Atlântica. Nos meses mais quentes, além de predominar a atuação dos sistemas de baixa pressão equatorial continental e tropical continental, têm-se as chuvas convectivas. Verificou-se, também, progressivo aumento na participação das chuvas convectivas, a partirda década de 1990, corroborando a teoria das mudanças climáticas.The rhythm and intensity of atmospheric systems vary intime and space. Therefore, it is necessary to study the dynamics of air masses over a temporal series in order to characterize the climate dynamics of a region or area. The participation of the active atmospheric systems and the percentage shared by convective andfrontal rains along the eastern slope of upper Paraná River were studied based on the dynamics of air masses. It was observed that, in such a slope, during the coldest months, the actions of the Atlantic tropical mass and polar Atlantic mass prevail. However, during thewarmer months, in addition to the predominance of the action of equatorial continental and tropical continental low atmospheric pressure systems, convective rains also take place. It was also noted that, from the 1990s onward, a progressive increase was observed in the participation of convective rains, strengthening the theory of climatic change.

  20. Variabilidade do vento na bacia hidrográfi ca do rio São Francisco durante a ocorrência da ZCAS / Variability of the wind in the hidrographic basin of the São Francisco river during ZCAS occurrence

    Directory of Open Access Journals (Sweden)

    Djane Fonseca da Silva

    2008-05-01

    Full Text Available O rio São Francisco é um dos rios brasileiros mais extensos e sua importância também está no volume de água transportado por ele através da região semi-árida, na sua contribuição histórica e econômica para fi xação das populações ribeirinhas e na criação das cidades hoje plantadas ao longo do vale. O principal mecanismo produtor de chuvas sobre a bacia do rio São Francisco é a Zona de Convergência do Atlântico Sul (ZCAS. A intensidade e direção do vento são variáveis de grande interesse nos estudos de balanço de água. Portanto, o presente trabalho tem como objetivo estudar a climatologia do vento e sua variabilidade na bacia do rio São Francisco. Foram utilizados dados mensais de ventos, componentes zonal e meridional, oriundos da Reanálise do NCEP/NCAR no período de 1982-1994, em três faixas de longitude (40ºW, 42,5ºW e 45ºW entre as latitudes de 25ºS e 5ºS. Observou-se que nas longitudes de 42,5ºW e 45ºW, a posição média da ZCAS está em torno de 20º S. Também foi observado que a posição da ZCAS apresenta uma grande variabilidade interanual, pois, de dezembro/1982 a fevereiro/1983 a ZCAS posicionou-se ao sul de 25ºS, enquanto no período de dezembro/1988 a fevereiro/1989 estava em torno de 15ºS. O posicionamento médio meridional da ZCAS em torno de 20º é de fundamental importância para produção de chuva sobre a bacia do rio São Francisco.

  1. The geologic history of Margaritifer basin, Mars

    Science.gov (United States)

    Salvatore, M. R.; Kraft, M. D.; Edwards, Christopher; Christensen, P.R.

    2016-01-01

    In this study, we investigate the fluvial, sedimentary, and volcanic history of Margaritifer basin and the Uzboi-Ladon-Morava (ULM) outflow channel system. This network of valleys and basins spans more than 8000 km in length, linking the fluvially dissected southern highlands and Argyre Basin with the northern lowlands via Ares Vallis. Compositionally, thermophysically, and morphologically distinct geologic units are identified and are used to place critical relative stratigraphic constraints on the timing of geologic processes in Margaritifer basin. Our analyses show that fluvial activity was separated in time by significant episodes of geologic activity, including the widespread volcanic resurfacing of Margaritifer basin and the formation of chaos terrain. The most recent fluvial activity within Margaritifer basin appears to terminate at a region of chaos terrain, suggesting possible communication between surface and subsurface water reservoirs. We conclude with a discussion of the implications of these observations on our current knowledge of Martian hydrologic evolution in this important region.

  2. Exergetic efficiency of basin type solar still

    Science.gov (United States)

    Layek, Apurba

    2017-06-01

    Simplicity of solar distillation system makes it very attractive, but the yield as well as the thermal efficiency is very low. Different types of absorbing materials e.g. black ink, black dye solution in basin water and black toner on water surface were used to evaluate their effect on the yield. As the absorbing material absorbs more solar radiation and increases basin water temperature, increases yield as well as energy efficiency. To enhance the thermal performance, and to have the insight of thermal losses; exergetic analysis of solar still is done. The maximum energy efficiency obtained for basin water having these absorber material on basin water are about 41.3 %, 43.42 % and 45.79 %, while exergetic efficiency values are 5.91%, 6.34 % and 7.10 % respectively. Exergy destruction from basin liner is the highest compared to that from basin water and glazing.

  3. A sabedoria da democracia

    Directory of Open Access Journals (Sweden)

    Gilson Matilde Diana

    2010-01-01

    Full Text Available http://dx.doi.org/10.5007/1677-2954.2010v9n1p131 Durante a maior parte da história, a democracia foi desprezada como uma forma política inferior – a regra do povo, ou “dos muitos”, era logo identificada como a regra da ralé, da escória. Herdando do povo a volubilidade e a instabilidade, a democracia estava sempre perigosamente próxima do arbítrio e da anarquia, com toda a violência que se costuma associar a isso.

  4. Chemical elements in soils of riverside areas of the Piracicaba river basin, São Paulo, Brazil; Elementos químicos em solos de áreas ribeirinhas da bacia hidrográfica do rio Piracicaba, São Paulo, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    França, Elvis J.; Lira, Marcelo B.G.; Paiva, José D.S., E-mail: ejfranca@cnen.gov.br, E-mail: liramarcelo@hotmail.com, E-mail: paivajds@gmail.com [Centro Regional de Ciências Nucleares (CRCN-NE/CNEN-PE), Recife, PE (Brazil); Fernandes, Elisabete A. de N.; Fonseca, Felipe Y.; Rodrigues, Vanessa S.; Cavalca, Isabel P.O.; Camilli, Leandro, E-mail: lis@cena.usp.br [Centro de Energia Nuclear na Agricultura (CENA/USP), Piracicaba, SP (Brazil)

    2017-07-01

    The monitoring of the soil quality of the Piracicaba River Basin, located in the State of São Paulo, is of extreme environmental importance, as it ensures the functionality of the basin ecosystems and environmental protection. However, there are few studies focused on the concentration of chemical elements in soils of environmental protection zones of highly populated riverside regions. In view of the above, this work aims to determine the concentration of chemical elements in the soils located on the banks of the Piracicaba River by the Instrumental Neutronic Activation Analysis - INAA. Soil samples were collected in the 0-5 cm, 5-10 cm and 10-15 cm profiles. Subsequently, the samples were dried in an oven at 80 deg C and comminuted with the aid of mortar and pistil. 250 mg portions were transferred to polyethylene capsules and irradiated in 10{sup 13} cm{sup -2}.s{sup -1} neutron flux for 4 hours at the IEA-R1 Nuclear Research Reactor of the Nuclear and Energy Research Institute -IPEN / SP, Brazil. The determination of the chemical elements was conducted by the k0-INAA method from the Quantu program. Comparing the results obtained with the soil values of an untouched area of Atlantic Forest - Carlos Botelho State Park, the maximum values obtained of As (29 mg / kg) and Zn (185 mg / kg) were about 5 times greater. However, concentrations of terrigenous elements such as Fe and Sc were also high in some cases, indicating that there is also a contribution of the source material (rocks) to the high concentrations observed in the riverside soils.

  5. Reserves in western basins: Part 1, Greater Green River basin

    Energy Technology Data Exchange (ETDEWEB)

    1993-10-01

    This study characterizes an extremely large gas resource located in low permeability, overpressured sandstone reservoirs located below 8,000 feet drill depth in the Greater Green River basin, Wyoming. Total in place resource is estimated at 1,968 Tcf. Via application of geologic, engineering and economic criteria, the portion of this resource potentially recoverable as reserves is estimated. Those volumes estimated include probable, possible and potential categories and total 33 Tcf as a mean estimate of recoverable gas for all plays considered in the basin. Five plays (formations) were included in this study and each was separately analyzed in terms of its overpressured, tight gas resource, established productive characteristics and future reserves potential based on a constant $2/Mcf wellhead gas price scenario. A scheme has been developed to break the overall resource estimate down into components that can be considered as differing technical and economic challenges that must be overcome in order to exploit such resources: in other words, to convert those resources to economically recoverable reserves. Total recoverable reserves estimates of 33 Tcf do not include the existing production from overpressured tight reservoirs in the basin. These have estimated ultimate recovery of approximately 1.6 Tcf, or a per well average recovery of 2.3 Bcf. Due to the fact that considerable pay thicknesses can be present, wells can be economic despite limited drainage areas. It is typical for significant bypassed gas to be present at inter-well locations because drainage areas are commonly less than regulatory well spacing requirements.

  6. Reserve estimates in western basins. Part 2: Piceance Basin

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-10-01

    This study characterizes an extremely large gas resource located in low permeability, sandstone reservoirs of the Mesaverde group in the Piceance Basin, Colorado. Total in place resource is estimated at 307.3 Tcf. Via application of geologic, engineering and economic criteria, the portion of this resource potentially recoverable as reserves is estimated. Those volumes estimated include probable, possible and potential categories and total 5.8 Tcf as a mean estimate of recoverable gas for all plays considered in the basin. About 82.6% of the total evaluated resource is contained within sandstones that have extremely poor reservoir properties with permeabilities considered too low for commerciality using current frac technology. Cost reductions and technology improvements will be required to unlock portions of this enormous resource. Approximately 2.7% of the total resource is contained within sandstone reservoirs which do not respond to massive hydraulic fracture treatments, probably due to their natural lenticular nature. Approximately 6.8% of the total resource is located in deeply buried settings below deepest established production. Approximately 7.9% of the total resource is considered to represent tight reservoirs that may be commercially exploited using today`s hydraulic fracturing technology. Recent technology advances in hydraulic fracturing practices in the Piceance Basin Mesaverde has resulted in a marked improvement in per well gas recovery which, where demonstrated, has been incorporated into the estimates provided in this report. This improvement is so significant in changing the risk-reward relationship that has historically characterized this play, that previously uneconomic areas and resources will graduate to the economically exploitable category. 48 refs., 96 figs., 18 tabs.

  7. Hydroclimatology of the Missouri River basin

    Science.gov (United States)

    Wise, Erika K.; Woodhouse, Connie A.; McCabe, Gregory; Pederson, Gregory T.; St. Jacques, Jeannine-Marie

    2018-01-01

    Despite the importance of the Missouri River for navigation, recreation, habitat, hydroelectric power, and agriculture, relatively little is known about the basic hydroclimatology of the Missouri River basin (MRB). This is of particular concern given the droughts and floods that have occurred over the past several decades and the potential future exacerbation of these extremes by climate change. Here, observed and modeled hydroclimatic data and estimated natural flow records in the MRB are used to 1) assess the major source regions of MRB flow, 2) describe the climatic controls on streamflow in the upper and lower basins , and 3) investigate trends over the instrumental period. Analyses indicate that 72% of MRB runoff is generated by the headwaters in the upper basin and by the lowest portion of the basin near the mouth. Spring precipitation and temperature and winter precipitation impacted by changes in zonal versus meridional flow from the Pacific Ocean play key roles in surface water supply variability in the upper basin. Lower basin flow is significantly correlated with precipitation in late spring and early summer, indicative of Atlantic-influenced circulation variability affecting the flow of moisture from the Gulf of Mexico. Although increases in precipitation in the lower basin are currently overriding the effects of warming temperatures on total MRB flow, the upper basin’s long-term trend toward decreasing flows, reduction in snow versus rain fraction, and warming spring temperatures suggest that the upper basin may less often provide important flow supplements to the lower basin in the future.

  8. New TNX Seepage Basin: Environmental information document

    International Nuclear Information System (INIS)

    Dunaway, J.K.W.; Johnson, W.F.; Kingley, L.E.; Simmons, R.V.; Bledsoe, H.W.

    1986-12-01

    The New TNX Seepage Basin has been in operation at the Savannah River Plant (SRP) since 1980 and is located in the southeastern section of the TNX facility. The basin receives waste from pilot scale tests conducted at TNX in support of the Defense Waste Processing Facility (DWPF) and the plant Separations area. The basin is scheduled for closure after the TNX Effluent Treatment Plant (ETP) begins operation. The basin will be closed pursuant to all applicable state and federal regulations. A statistical analysis of monitoring data indicates elevated levels of sodium and zinc in the groundwater at this site. Closure options considered for the New TNX Seepage Basin include waste removal and closure, no waste removal and closure, and no action. The two predominant pathways for human exposure to chemical contaminants are through surface, subsurface, and atmospheric transport. Modeling calculations were made to determine the risks to human population via these general pathways for the three postulated closure options for the New TNX Seepage Basin. Cost estimates for each closure option at the basin have also been prepared. An evaluation of the environmental impacts from the New TNX Seepage Basin indicate that the relative risks to human health and ecosystems for the postulated closure options are low. The transport of six chemical and one radionuclide constituents through the environmental pathways from the basin were modeled. The maximum chemical carcinogenic risk and the noncarcinogenic risk for the groundwater pathways were from exposure to trichloromethane and nitrate

  9. Relating petroleum system and play development to basin evolution: West African South Atlantic basins

    NARCIS (Netherlands)

    Beglinger, S.E.; Doust, H.; Cloetingh, S.A.P.L.

    2012-01-01

    Sedimentary basins can be classified according to their structural genesis and evolutionary history and the latter can be linked to petroleumsystem and playdevelopment. We propose an approach in which we use the established concepts in a new way: breaking basins down into their natural basin cycle

  10. Fractal basin boundaries generated by basin cells and the geometry of mixing chaotic flows

    NARCIS (Netherlands)

    Nusse, HE; Yorke, JA

    2000-01-01

    Experiments and computations indicate that mixing in chaotic flows generates certain coherent spatial structures. Lf a two-dimensional basin has a basin cell (a trappings region whose boundary consists of pieces of the stable and unstable manifold of some periodic orbit) then the basin consists of a

  11. Corporeidade da voz : estudo da vocalidade poetica

    OpenAIRE

    Fernando Manoel Aleixo

    2004-01-01

    Resumo: Este material é o resultado da investigação prática da voz realizada a partir do desenvolvimento do princípio da sabedoria sensível do corpo. O texto expõe as etapas percorridas no levantamento de experiências e reflexões pedagógicas sobre a voz do ator, no estabelecimento de referências sobre o corpo e o aprendizado sensível e, também, no processo de composição poética do espetáculo teatral Voz Mercê Abstract: This material springs from a practical investigative work on voice base...

  12. Modelagem da laringe: da biologia ao computador

    Directory of Open Access Journals (Sweden)

    Marcelo de Oliveira Rosa

    2016-01-01

    Full Text Available Neste trabalho apresentamos uma descrição daanatomia e fisiologia da laringe, enfatizando os aspectos relevantes à fonação. A partir destes aspectos, a modelagem da laringe é apresentada. O principal objetivo de modelara laringe é representar de uma maneira simples esse órgãoatravés de equações matemáticos intimamente relacionadoscom características fisiológicas. Equações aerodinâmicase viscoelásticas são simplificadas de acordo com as pesquisas,sempre buscando simplicidade e aplicabilidade computacional. Assim, pesquisadores podem compreender melhor a laringe e a fala humana em termos dos efeitos linguísticos, cirúrgicos e computacionais produzidos pelamovimentação desse órgão. Palavras-chave: Laringe, modelagem, sinal glotal,produção da fala.

  13. MODELAGEM DA LARINGE: DA BIOLOGIA AO COMPUTADOR

    Directory of Open Access Journals (Sweden)

    Marcelo de Oliveira Rosa

    2016-01-01

    Full Text Available Neste trabalho apresentamos uma descrição daanatomia e fisiologia da laringe, enfatizando os aspectos relevantes à fonação. A partir destes aspectos, a modelagem da laringe é apresentada. O principal objetivo de modelara laringe é representar de uma maneira simples esse órgãoatravés de equações matemáticos intimamente relacionadoscom características fisiológicas. Equações aerodinâmicase viscoelásticas são simplificadas de acordo com as pesquisas,sempre buscando simplicidade e aplicabilidade computacional. Assim, pesquisadores podem compreender melhor a laringe e a fala humana em termos dos efeitos linguísticos, cirúrgicos e computacionais produzidos pelamovimentação desse órgão. Palavras-chave: Laringe, modelagem, sinal glotal,produção da fala.

  14. River water quality assessment using environmentric techniques: case study of Jakara River Basin.

    Science.gov (United States)

    Mustapha, Adamu; Aris, Ahmad Zaharin; Juahir, Hafizan; Ramli, Mohammad Firuz; Kura, Nura Umar

    2013-08-01

    Jakara River Basin has been extensively studied to assess the overall water quality and to identify the major variables responsible for water quality variations in the basin. A total of 27 sampling points were selected in the riverine network of the Upper Jakara River Basin. Water samples were collected in triplicate and analyzed for physicochemical variables. Pearson product-moment correlation analysis was conducted to evaluate the relationship of water quality parameters and revealed a significant relationship between salinity, conductivity with dissolved solids (DS) and 5-day biochemical oxygen demand (BOD5), chemical oxygen demand (COD), and nitrogen in form of ammonia (NH4). Partial correlation analysis (r p) results showed that there is a strong relationship between salinity and turbidity (r p=0.930, p=0.001) and BOD5 and COD (r p=0.839, p=0.001) controlling for the linear effects of conductivity and NH4, respectively. Principal component analysis and or factor analysis was used to investigate the origin of each water quality parameter in the Jakara Basin and identified three major factors explaining 68.11 % of the total variance in water quality. The major variations are related to anthropogenic activities (irrigation agricultural, construction activities, clearing of land, and domestic waste disposal) and natural processes (erosion of river bank and runoff). Discriminant analysis (DA) was applied on the dataset to maximize the similarities between group relative to within-group variance of the parameters. DA provided better results with great discriminatory ability using eight variables (DO, BOD5, COD, SS, NH4, conductivity, salinity, and DS) as the most statistically significantly responsible for surface water quality variation in the area. The present study, however, makes several noteworthy contributions to the existing knowledge on the spatial variations of surface water quality and is believed to serve as a baseline data for further studies. Future

  15. Exposição humana ao metilmercúrio em comunidades ribeirinhas da Região do Tapajós, Pará, Brasil Methylmercury human exposure in riverine villages of Tapajos basin, Pará State, Brazil

    Directory of Open Access Journals (Sweden)

    Maria da Conceição Nascimento Pinheiro

    2000-06-01

    Full Text Available Avaliou-se a exposição humana ao metilmercúrio e ao mercúrio total em comunidades ribeirinhas do rio Tapajós e da região metropolitana de Belém, no Estado do Pará, Brasil, através da determinação de mercúrio total e metilmercúrio em amostras de cabelo nos anos de 1994 e 1995. Observou-se que as concentrações médias de mercúrio total variaram de 2 ± 1µg/g-1 a 20,5 ± 12,1µg/g-1, enquanto que as concentrações médias de metilmercúrio variaram de 1,4 ± 0,7µg/g-1 a 18,5 ± 11µg/g-1. Estes resultados confirmam a contaminação mercurial na região do rio Tapajós, admitem a possibilidade do aparecimento de sinais e sintomas de intoxicação mercurial e recomendam a manutenção da monitorização do mercúrio total e do metilmercúrio nas amostras de cabelo, bem como a necessidade de estudos clínico-epidemiológicos para implantação de medidas de prevenção e controle da intoxicação mercurial.Evaluation of total human exposure to mercury and methylmercury was effected in riverine villages along the Tapajos river and in the metropolitan area of Belem city, state of Para, Brazil, by using total mercury and methylmercury concentrations in hair samples in 1994 and 1995. It was observed that average concentrations of total mercury are in a range from 2 ± 1µg/g-1 to 20.5 ± 12.1µg/g-1. While methylmercury average concentration varies from 1.4 ± 0.7µg/g-1 to 18.5 ± 11µg/g-1. These results confirm mercury contamination in the Tapajos river and possible appearance of mercury intoxication symptoms, and recommends the monitoring of compounds in hair samples as well as the need for epidemiological and clinical studies for human health prevention and control of mercury intoxication.

  16. BpuAmI: a novel SacI neoschizomer from Bacillus pumilus discovered in an isolate from Amazon Basin, recognizing 5'-GAG¯CTC-3' BpuAmI: um novo neoesquisomero de SacI de Bacillus pumilus descoberta em um isolado oriundo da Bacia Amazônica, reconhecendo 5'-GAG¯CTC-3'

    Directory of Open Access Journals (Sweden)

    Jocelei M. Chies

    2006-03-01

    Full Text Available A strain of Bacillus pumilus was isolated and identified from water samples collected from a small affluent of the Amazon River. Type II restriction endonuclease activity was detected in these bacteria. The enzyme was purified and the molecular weight of the native protein estimated by gel filtration and SDS-PAGE. The optimum pH, temperature and salt requirements were determined. Quality control assays showed the complete absence of "nonspecific nucleases." Restriction cleavage analysis and DNA sequencing of restriction fragments allowed the unequivocal demonstration of 5´GAG¯CTC3´ as the recognition sequence. This enzyme was named BpuAmI and is apparently a neoschizomer of the prototype restriction endonuclease SacI. This is the first report of an isoschizomer and/or neoschizomer of the prototype SacI identified in the genus Bacillus.Uma linhagem de Bacillus pumilus foi isolada e identificada de amostras de águas coletadas em um pequeno Igarapé do Rio Amazonas. Foi detectada atividade de restrição do tipo II nesta bactéria. A enzima foi purificada e o peso molecular da proteína nativa foi estimado por gel filtração e por eletroforese em gel de poliacrilamida. Foram determinados, o pH e temperatura ótimos e as necessidades de sais. Os ensaios do controle de qualidade mostraram uma ausência completa de "nucleases não específicas". As analises das clivagens e o seqüenciamento do DNA dos fragmentos de restrição permitiram uma demonstração inequívoca de que 5´GAG¯CTC 3´ é a seqüência de reconhecimento da enzima. Esta enzima foi denominada de BpuAmI e aparentemente é um neoesquisômero da enzima protótipo SacI. Este é o primeiro relato de um isoesquisômero e/ou neoesquisômero da enzima protótipo SacI identificada no gênero Bacillus.

  17. Suceava Anthropic Torrential Basin - Prolegomena

    Directory of Open Access Journals (Sweden)

    Andrei-Emil BRICIU

    2010-05-01

    Full Text Available One problem discussed by urban hydrology today is the draining influence of the modern cities over the natural drainage systems. The increasing urban areas and of their imperviousness all over theworld is linked to floods shape modifications and unpredicted systemic implications.  Generally, the draining influence of a city over its environment begins when it has a surface great enough to create an anthropic-generated runoff during a rain with enoughprecipitations to provoke waters accumulation into street torrents. The size, imperviousness, precipitations, drainage system and water consumption of the Suceava city are analysed in order to estimate the discharge of the city into Suceava river at various rainfalls. The article is structured as follows:1. Argumentation on the class separation between natural and anthropic torrential basins.2. Placing Suceava city as one of the torrential anthropic basins in Romania using basic arguments.3. Extending one of the argument, the importance of the rainfalls, in more detailed discussions (rainfall characteristics mainly, but also its cumulative effect with the floods on the Suceava river and the consumption of water in the city, with two scenarios. 4. The city is analysed as being integrated into a metropolitan area which can exacerbate the influence of the main city over the surrounding natural drainage basins nearby that area.5. Conclusions, where measures are proposed in order to diminish the potential negative effects on environment and human society.This article is only an introduction to a more detailed analysis which will be complete with further field data.

  18. Delaware Basin Monitoring Annual Report

    Energy Technology Data Exchange (ETDEWEB)

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2001-09-28

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. EPA requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard and must consider inadvertent drilling into the repository at some future time.

  19. K Basins Field Verification Program

    International Nuclear Information System (INIS)

    Booth, H.W.

    1994-01-01

    The Field Verification Program establishes a uniform and systematic process to ensure that technical information depicted on selected engineering drawings accurately reflects the actual existing physical configuration. This document defines the Field Verification Program necessary to perform the field walkdown and inspection process that identifies the physical configuration of the systems required to support the mission objectives of K Basins. This program is intended to provide an accurate accounting of the actual field configuration by documenting the as-found information on a controlled drawing

  20. Delaware Basin Monitoring Annual Report

    International Nuclear Information System (INIS)

    2001-01-01

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. EPA requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard and must consider inadvertent drilling into the repository at some future time.

  1. A ciclovia da morte

    OpenAIRE

    Gois, Ancelmo

    2016-01-01

    De acordo com levantamento da FGV/DAPP, houve mais de 36 mil menções ao desabamento no Twi er, até o fim da tarde de ontem, com palavras como "vergonha", "incompetência" e "culpa" em destaque, além de muitas criticas ao prefeito Eduardo Paes.

  2. Stratigraphic Signatures of Forearc Basin Formation Mechanisms

    Science.gov (United States)

    Mannu, U.; Ueda, K.; Gerya, T.; Willett, S.; Strasser, M.

    2014-12-01

    Forearc basins are loci of active sedimentation above the landward portion of accretionary prisms. Although these basins typically remain separated from the frontal prism by a forearc high, their evolution has a significant impact on the structure and deformation of the entire wedge. Formation of forearc basins has been proposed as a consequence of changes in wedge stability due to an increase of slab dip in subduction zones. Another hypothesis attributes this to higher hinterland sedimentation, which causes the rear of the wedge to stabilize and eventually develop a forearc basin. Basin stratigraphic architecture, revealed by high-resolution reflection seismic data and borehole data allows interpretation of structural development of the accretionary prism and associated basins with the goal of determining the underlying driving mechanism(s) of basin formation. In this study we supplement data interpretation with thermo-mechanical numerical models including high-resolution isochronal surface tracking to visualize the developing stratigraphy of basins that develop in subduction zone and wedge dynamic models. We use a dynamic 2D thermo mechanical model incorporating surface processes, strain weakening and sediment subduction. The model is a modification of I2VIS model, which is based on conservative, fully staggered finite differences and a non-diffusive marker- in-cell technique capable of modelling mantle convection. In the model different driving mechanisms for basin formation can be explored. Stratigraphic simulations obtained by isochronal surface tracking are compared to reflection pattern and stratigraphy of seismic and borehole data, respectively. Initial results from a model roughly representing the Nankai Trough Subduction Zone offshore Japan are compared to available seismic and Integrated Ocean Drilling (IODP) data. A calibrated model predicting forearc basin stratigraphy will be used to discern the underlying process of basins formation and wedge

  3. Reconhecimento da Multiparentalidade

    OpenAIRE

    Nogueira, Gustavo Gonçalves; Faculdade Dr. Francisco Maeda; Dias, Marina Bianchi; Faculdade Dr. Francisco Maeda

    2014-01-01

    O presente trabalho apresenta um estudo sobre a evolução do conceito de entidade familiar e filiação no ordenamento jurídico brasileiro, enfatizando a respeito do instituto da multiparentalidade, e as implicações que esta nova modalidade de filiação é capaz de imprimir no modo de exercício dos direitos e deveres atinentes à conservação da família, tendo em vista que, nos primórdios da civilização a razão de ser da união de pessoas em torno da família era a primordial proteção ao patrimônio, f...

  4. Cartografia da paisagem alterada

    Directory of Open Access Journals (Sweden)

    Simone Cortezão

    2011-04-01

    Full Text Available O presente trabalho de pesquisa surge da investigação de paisagens alteradas, áreas pós-industriais e da geografia urbana que é conformada pela indústria. A preocupação principal é revê-las como espaço de investigação crítica sob o ponto de vista particular, integradas às noções da peculiar natureza industrial com suas consequentes transformações na paisagem, além das relações do indivíduo com esse novo meio produzido. “Cartografia da paisagem alterada” é uma pesquisa que indicia a paisagem alterada em pelo menos dois estratos: um que é o da construção da geografia da cidade pela indústria, e o outro que é a paisagem alterada subjetivamente, o que configura uma crítica e uma reação à conformação sócio geográfica em outros parâmetros - da proximidade, da experiência vivida e da construção de um vocabulário próprio.  A pesquisa teórica sobre áreas pós-industriais, associada a referências nas artes e arquitetura, constitui o primeiro estrato. Teorias e procedimentos artísticos de Robert Smithson, Joseph Beuys e Rem Koolhaas fornecem material para o segundo, mediante a pesquisa do cotidiano no lugar, a região do Vale do Aço, que se configura em um guia - glossário

  5. Mineralogia e química de três solos de uma toposseqüência da bacia sedimentar do Alto Solimões, Amazônia ocidental Mineralogy and chemistry of three soils along a topossequence from the Upper Solimões Basin, western Amazonia

    Directory of Open Access Journals (Sweden)

    Hedinaldo Narciso Lima

    2006-02-01

    Full Text Available Pouco se conhece sobre os atributos mineralógicos e químicos dos solos da região do Alto Solimões, em comparação aos solos do Médio e Baixo Amazonas, mais estudados. No Alto Solimões, pela maior proximidade do ambiente andino, há maior possibilidade de enriquecimento dos solos. Este trabalho teve por objetivo ampliar o conhecimento dos solos dessa região por meio da caracterização de atributos mineralógicos e químicos de três solos de uma toposseqüência na região de Benjamin Constant (AM, próximo à fronteira Brasil-Peru. Tais solos situam-se das partes mais elevadas até a várzea, sendo classificados como Argissolo Amarelo Ta alumínico abrupto, Plintossolo Argilúvico alumínico abrúptico e Neossolo Flúvico Ta eutrófico. Os resultados mostram que estes solos possuem maior riqueza de nutrientes e de minerais alteráveis, com menor grau de intemperismo, em comparação aos solos mais bem drenados da parte oriental da Amazônia, derivados de sedimentos mais antigos ou de rochas cristalinas. Os baixos teores de Fe e Mn no Plintossolo em todas as frações analisadas, em comparação aos demais solos da toposseqüência, indicam o predomínio de processos de remoção nesse ambiente, enquanto, no Neossolo Flúvico, a remoção é superada pela deposição de novos sedimentos, possibilitando a ocorrência em teores elevados de Fe e Mn. Os valores de capacidade máxima de adsorção de fosfato são baixos nos horizontes superficiais, tornando-se elevados nos horizontes subsuperficiais mais ricos em argila ou com ocorrência de plintita, podendo representar, em caso de erosão, um fator limitante ao cultivo agrícola.Little is known about chemical and mineralogical attributes of soils from the upper Amazon, compared with well-studied soils from the middle and lower Amazon. In the well-drained uplands of Upper Amazon, due to the Andes Cordillera proximity, soils are expected to be chemically richer. This work aimed to increase

  6. Risk assessment of environmental exposure to mercury in the urban area of Alta Floresta, Mato Grosso State - Amazonian basin - Brazil; Avaliacao do risco potencial para a saude humana da exposicao ao mercurio na area urbana de Alta Floresta, Mato Grosso - Bacia Amazonica - Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Hacon, Sandra de Souza

    1996-07-01

    Mercury contamination in the Amazon basin is a consequence of the intensive and extensive use of metallic Hg in gold mining activities which use the amalgamation process. Mercury vapor is the main form of Hg released in the Amazonian ecosystem. However, some studies have shown that enhanced biotransformation of inorganic mercury into organic Hg is occurring. These two forms of Hg have some properties in common but differ in toxicity and metabolic behavior. Knowledge of the fate and transport of Hg in the Amazon basin is especially important for the assessment of the extent of contamination, as well as the characterization of exposed groups. the present study attempts to evaluate the Hg exposure scenario as well as to assess the quantitative risk (from Hg emission) for workers in gold-dealers' shops and for the general population in the urban area of Alta Floresta. The way that are was populated and the regional and local economy history, particularly in connection with the commercialization of gold in the region, are important factors in the study of the exposure scenario in Alta Floresta. Assessment of exposure pathways has shown that the adult and infant populations of Alta Floresta are exposed to low dose levels of Hg. Fish consumed locally shows high concentrations of Hg, ranging from 0,5 to 3,6 mg/kg. However, due to the low consumption of fish by the general population this exposure pathway has little effect on the health of the general public. Fishermen and their families are those most at risk from Hg intoxication. Workers in gold shops are another critical group, in relation to exposure to Hg vapor. As for the infant population, above 4 years old, inhalation of Hg vapor is the main source of the exposure, one exception being to children of fishermen whose pattern of fish consumption is similar to their parents. These are the two groups at risk from fish ingestion. Infants between 1 and 4 years of age are the group most likely to suffer adverse effects

  7. Basin Assessment Spatial Planning Platform

    Energy Technology Data Exchange (ETDEWEB)

    2017-07-26

    The tool is intended to facilitate hydropower development and water resource planning by improving synthesis and interpretation of disparate spatial datasets that are considered in development actions (e.g., hydrological characteristics, environmentally and culturally sensitive areas, existing or proposed water power resources, climate-informed forecasts). The tool enables this capability by providing a unique framework for assimilating, relating, summarizing, and visualizing disparate spatial data through the use of spatial aggregation techniques, relational geodatabase platforms, and an interactive web-based Geographic Information Systems (GIS). Data are aggregated and related based on shared intersections with a common spatial unit; in this case, industry-standard hydrologic drainage areas for the U.S. (National Hydrography Dataset) are used as the spatial unit to associate planning data. This process is performed using all available scalar delineations of drainage areas (i.e., region, sub-region, basin, sub-basin, watershed, sub-watershed, catchment) to create spatially hierarchical relationships among planning data and drainages. These entity-relationships are stored in a relational geodatabase that provides back-end structure to the web GIS and its widgets. The full technology stack was built using all open-source software in modern programming languages. Interactive widgets that function within the viewport are also compatible with all modern browsers.

  8. Fractal basins in an ecological model

    Directory of Open Access Journals (Sweden)

    I. Djellit

    2013-09-01

    Full Text Available Complex dynamics is detected in an ecological model of host-parasitoid interaction. It illustrates fractalization of basins with self-similarity and chaotic attractors. This paper describes these dynamic behaviors, bifurcations, and chaos. Fractals basins are displayed by numerical simulations.

  9. sedimentology, depositional environments and basin evolution

    African Journals Online (AJOL)

    Preferred Customer

    ABSTRACT: The Inter-Trappean coal and oil shale-bearing sedimentation in the Delbi-Moye Basin took place in tectonically controlled grabens and half-grabens formed by extensional fault systems and accompanied by passive subsidence. The sedimentation history of the basin is related to the tectonic events that affected ...

  10. K-Basin isolation barrier seal

    International Nuclear Information System (INIS)

    Ruff, E.S.

    1994-10-01

    This report documents various aspects of the design, analysis, procurement, and fabrication of the hydraulic seal on the isolation barriers to be installed in the 100-K Area spent nuclear fuel basin. The isolation barrier is used to keep water in the basin in the event of an earthquake

  11. Attractors and basins of dynamical systems

    Directory of Open Access Journals (Sweden)

    Attila Dénes

    2011-03-01

    Full Text Available There are several programs for studying dynamical systems, but none of them is very useful for investigating basins and attractors of higher dimensional systems. Our goal in this paper is to show a new algorithm for finding even chaotic attractors and their basins for these systems. We present an implementation and examples for the use of this program.

  12. Sedimentology, depositional environments and basin evolution of ...

    African Journals Online (AJOL)

    The Inter-Trappean coal and oil shale-bearing sedimentation in the Delbi-Moye Basin took place in tectonically controlled grabens and half-grabens formed by extensional fault systems and accompanied by passive subsidence. The sedimentation history of the basin is related to the tectonic events that affected East Africa.

  13. Characterization of chemical elements of fruits of Leucaena leucocephala in riverside areas of the Piracicaba River Basin, São Paulo, Brazil; Caracterização de elementos químicos de frutos de Leucaena leucocephala em áreas ribeirinhas da Bacia do Rio Piracicaba, São Paulo, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    França, Elvis J.; Magalhães, Marcelo R.L. de; Ferreira, Fabiano S., E-mail: ejfranca@cnen.gov.br, E-mail: marcelo_rlm@hotmail.com, E-mail: biologofabiano10@gmail.com [Centro de Ciência Nucleares do Nordeste (CRCN-NE/CNEN-PE), Recife, PE (Brazil); Fernandes, Elisabete A. de N.; Fonseca, Felipe Y.; Rodrigues, Vanessa S.; Cavalca, Isabel P.O.; Camilli, Leandro, E-mail: lis@cena.usp.br, E-mail: vsrodrigues89@gmail.com, E-mail: i-cavalcante@uol.com.br [Centro de Energia Nuclear na Agricultura (CENA/USP), Piracicaba, SP (Brazil); Silva, Bruno F., E-mail: brunodasilva1996@hotmail.com [Universidade Federal de Pernambuco (UFPE), Recife, PE (Brazil)

    2017-07-01

    The species Leucaena leucocephala is present in several environments. Its fruit is widely used in cattle feed. However, it is classified as an invasive species, causing problems in the restoration of impacted areas. The Piracicaba River Basin is heavily affected by urbanization and industrialization, which shows the proliferation of this species. Considering the importance of this tree species for Brazil, the present study quantifies chemical elements in fruits of this species by applying Instrumental Neutronic Activation Analysis, method k{sup 0}. Samples were collected in riverside areas of the Piracicaba Municipality, São Paulo, Brazil, at different periods (dry and rainy season). After collection, the samples were shattered and transferred to polyethylene capsules and irradiated with neutrons. Certified reference materials were used to evaluate the quality of the analytical procedure, all material was irradiated under a thermal neutron flux of 10{sup 13} cm-2s-1 for 8 hours. Ni-Cr alloy was used for the monitoring of thermal neutron flux. High Resolution Range Spectrometry with HPG detectors was employed for the measurement of the induced radioactivity, allowing the quantification of the chemical elements. Compared with available results of chemical analysis of pods, the chemical elements Ca, K, Ba, Cr and Se presented high concentrations. We also quantified chemical elements of environmental relevance such as As, Hg, Br, Ce, Cs, Eu, Hf, La, Rb, Sb, Sc, Sm, Ta, Tb, Th and Yb, indicating the need for element dynamics studies in the environments occupied by this invasive species.

  14. Implementing Integrated River Basin Management in China

    Directory of Open Access Journals (Sweden)

    Dorri G. J. te Boekhorst

    2010-06-01

    Full Text Available This paper examines the role of the World Wildlife Fund for Nature China as policy entrepreneur in China. It illustrates the ways in which the World Wildlife Fund for Nature is active in promoting integrated river basin management in the Yangtze River basin and how the efforts at basin level are matched with the advice of the China Council for International Cooperation on Environment and Development task force on integrated river basin management to the national government of China. This article demonstrates that the World Wildlife Fund for Nature uses various strategies of different types to support a transition process towards integrated river basin management. Successful deployment of these strategies for change in environmental policy requires special skills, actions, and attitudes on the part of the policy entrepreneur, especially in China, where the government has a dominant role regarding water management and the position of policy entrepeneurs is delicate.

  15. MACIEZ DA CARNE BOVINA

    Directory of Open Access Journals (Sweden)

    Antonio Bento Mancio

    2006-10-01

    Full Text Available Dentre as características de qualidade da carne bovina, a maciez assume posição de destaque, sendo considerada a característica organoléptica de maior influência na aceitação da carne por parte dos consumidores. A dureza da carne pode ser dividida em dureza residual, causada pelo tecido conjuntivo e outras proteínas do estroma, e dureza de actomiosina, causada pelas proteínas miofibrilares. Dentre os fatores que influenciam a maciez da carne, podem ser destacados a genética, a raça, a idade ao abate, o sexo, a alimentação, o uso de agentes hormonais (?-adrenérgicos e os tratamentos post-mortem. A qualidade final da carne é resultante de tudo o que aconteceu com o animal durante toda a cadeia produtiva. Devem-se assegurar procedimentos adequados de transporte, armazenamento, manipulação, exposição e preparo da carne, a fim de se obter um produto de melhor qualidade. PALAVRAS-CHAVE: Calpaínas, calpastatina, qualidade da carne, rigor mortis, tecido muscular.

  16. GERONTOLOGIA: ESTADO DA ARTE

    Directory of Open Access Journals (Sweden)

    Vera M.A.Tordino Brandão

    2010-02-01

    Full Text Available O Programa de Gerontologia da PUC desenvolve pesquisas focando o ser na perspectiva do envelhecimento. As atividades são interdisciplinares e reúnem docentes, alunos e ex-alunos. Nesta mesa redonda apresentamos um panorama sobre estes estudos. Na área da educação e comunicação o foco está centrado na longevidade e na preparação e representação social da velhice. São ressaltadas como temáticas: a formação continuada de profissionais e pesquisadores; o significado da religiosidade/espiritualidade ao longo da trajetória, e sua repercussão na qualidade de vida do idoso; os programas sócio-educacionais para idosos e concepções sobre educação; o monitoramento da mídia na cobertura da crescente longevidade e seus impactos. Em identidade e modos de morar reflete-se sobre soluções planejadas e sua adequação para a inclusão do envelhecimento populacional como questão fundamental, que implica a elaboração de novas políticas, investigações e, especialmente, apresenta-se como questão a ser analisada, refletida e vivenciada pela sociedade em geral. Quanto à saúde, o Programa desenvolve várias pesquisas numa abordagem interdisciplinar tendo como objetos de estudo: a terapia assistida com animais direcionada a idosos com diagnóstico de Alzheimer; o acompanhamento terapêutico e o atendimento psicoterapêutico em grupo, a aplicação da técnica de Calatonia em idosos moradores de ILPI, além da investigação sobre impasses clínicos no idoso frágil. Palavras-chave: gerontologia, longevidade, envelhecimento

  17. CONDICIONANTES DA COMPETITIVIDADE EMPRESARIAL

    Directory of Open Access Journals (Sweden)

    José Luiz Contador

    2010-03-01

    Full Text Available Este trabalho examina teoricamente os fatores determinantes da competitividade do produto e do negócio, imprescindíveis à elaboração de estratégias competitivas que visam à obtenção e sustentação de vantagens competitivas. Esse tema é objeto tanto da área de marketing estratégico quanto da de estratégia empresarial. Nas duas áreas, há um ponto de consenso que afirma que a empresa deve diferenciar sua oferta para conquistar e manter vantagem competitiva. Mas, os estudos conduzidos por meio do modelo de Campos e Armas da Competição revelaram que a empresa pode diferenciar seu produto e/ou serviço de modo mais amplo, levando em consideração, na formulação da sua estratégia competitiva, também o campo da competição, quer do produto, quer dela própria. Assim, o objetivo deste artigo é evidenciar que, para a empresa ser competitiva, além de diferenciar seu produto e/ou seu serviço no sentido tradicional, ela precisa: 1 diferenciar seu produto incluindo a definição em quais campos vai competir em cada segmento; e 2 escolher as armas da competição que irá utilizar e definir a intensidade de cada arma. Para atingir tal objetivo, foram necessários vários conceitos do modelo de Campos e Armas da Competição: campo da competição, arma da competição, tese do modelo, configuração dos campos da competição, campo coadjuvante, produto coadjuvante e par produto-mercado. Como uma proposta inovadora sempre desperta dúvida, é mostrado o processo de validação do modelo de Campos e Armas da Competição e são discutidas sua universalidade, consistência e completude.

  18. Composição florística e estrutura da comunidade arbórea em uma floresta estacional decidual em afloramento calcário (Fazenda São José, São Domingos, GO, bacia do rio Paranã Floristic composition and structure of the tree community in a deciduous forest on a limestone outcrop in São Domingos, Goiás, Paranã river basin, Brazil

    Directory of Open Access Journals (Sweden)

    Luciana Álvares da Silva

    2003-06-01

    Full Text Available A bacia do rio Paranã (Goiás e Tocantins com 5.940.382ha, tem alta diversidade de fitofisionomias, incluindo a floresta estacional decidual sobre afloramento calcário, que ainda não foi estudada nesta região. Este trabalho objetivou o levantamento quantitativo da vegetação arbórea de uma floresta estacional decidual sobre afloramento calcário (13°49'34''S e 46º 41'55''W; 478m de altitude na fazenda São José, São Domingos, GO. Foram demarcadas cinco linhas a intervalos de 100m, onde foram aleatoriamente alocadas 25 parcelas permanentes de 20 × 20m (1,0 ha. Em cada parcela foram amostrados todos os indivíduos com diâmetro à altura do peito (DAP igual ou maior que 5cm, onde foram medidos o DAP e a altura, e identificadas as espécies. Foram amostrados 588 indivíduos (536 vivos e 52 mortos ainda em pé, pertencentes a 36 espécies, 31 gêneros e 21 famílias, com índice de Shannon 2,99 e Equabilidade 0,83. As principais espécies em valor de importância (VI, foram: Tabebuia impetiginosa (43,81, Aspidosperma pyrifolium (35,64, Luetzelburgia sp. (21,77, Commiphora leptophloeos (18,79, Myracrodruon urundeuva (15,79, Pseudobombax tomentosum (13,42, Combretum duarteanum (13,04, Luehea divaricata (12,24, Cabralea canjerana (11,99, Ficus pertusa (11,82, Jacaranda brasiliana (11,68 e Aspidosperma sp. (10,57 que juntas somaram 73,5% do VI total, enquanto as 24 espécies restantes somaram 26,5%. Esta floresta é similar, em termos de diversidade, a outras áreas de afloramentos na região.The Paranã river basin (States of Goiás and Tocantins, Brazil, with 5,940,382 ha, has many different plant physiognomies, including the deciduous forest on limestone outcrops which has not yet been studied in this region. In this paper we present the structure of the tree community of a deciduous forest on a limestone outcrop (13º49'34'' S; 46º 41'55'' W in São Domingos municipality, Goiás State, Brazil. Twenty-five plots of 20m × 20m (400m² were

  19. The impacts of mega discoveries of oil and natural gas in the pre-salt Santos Basin: Brazil 2000 - 2030 - 2050; Os impactos das mega descobertas de oleo e gas natural no pre-sal da Bacia de Santos: Brasil 2000 - 2030 - 2050

    Energy Technology Data Exchange (ETDEWEB)

    Bahia, Raymundo Ruy; Reis, Lucio Eduardo Solano [Universidade da Amazonia (GEPEE/UNAMA), Belem, PA (Brazil). Nucleo de Socio-economia. Grupo de Estudos e Pesquisas Economicas Energeticas], e-mail: ruybahia@uol.com.br, e-mail: lereis2000@gmail.com

    2008-07-01

    This paper is a follow-up of four papers presented at the V CBPE 2006 e XI CBE 2006 updating the investment needs to expand the electric energy (EE) Offer. Such analysis revealed an hydro matrix over cost investments of 293 bi US$ (10bi US$/year) as compared to the hydro thermo matrix. Such data proof the unviability to supply the Southern, Southeastern and Central-West regions demand with Amazonian hydroelectricity. Furthermore, evaluations about the impacts of the huge underestimate volumes of proved reserves of oil and NG of 20 Gboe from the Projects Tupi, Carioca and Parati and Jupiter discoveries are limited to a small geographic area of 15,000 sqkm (122 x 122 km) that is only 9 percent of the Pre-Salt total area of 160,000 sqkm supporting the hypothesis of 160 Gboe for the ultimate ROR for both Campos and Pre-Salt Basins plus all others exploratory fronts offshore and onshore. In this probable case the mid-points of oil and NG will migrate to the 2070 year. Under these circumstances either scenarios will support the oil and NG self-sufficiencies for those regions Southern, Southeastern and Central-West regions, up to the 2050 year and probably extended to the 2070 year. The estimated volume of the potential proved reserve NG Jupiter Project is also underestimate but large enough (7,0 Gboe = 1,100 billion of cubic meter= Gmc) to supply 80 percent (80 GW) of the total 101 GW expansion offer of EE up to the 2030 year. Finally there is not a single good reason to justify the supply the EE demand of the Southern, Southeastern and Central-West regions with the unviable Amazonian hydroelectricity. (author)

  20. Efeito da eutonia no tratamento da fibromialgia

    OpenAIRE

    Maeda,Cecília; Martinez,José Eduardo; Neder,Matilde

    2006-01-01

    OBJETIVO: avaliar a eutonia como método terapêutico auxiliar no tratamento da fibromialgia (FM). MÉTODOS: estudou-se um grupo de 20 mulheres, segundo os critérios do American College of Rheumatology (ACR), com duração mínima de seis meses, sem alterações no tratamento medicamentoso ou prescrição de exercícios nesse período. As pacientes foram avaliadas através do questionário de dados sociodemográficos; Escala Visual Analógica (EVA) para dor e questionário genérico de avaliação da qualidade d...

  1. Delaware Basin Monitoring Annual Report

    Energy Technology Data Exchange (ETDEWEB)

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2002-09-21

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  2. Delaware Basin Monitoring Annual Report

    Energy Technology Data Exchange (ETDEWEB)

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2003-09-30

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  3. Delaware Basin Monitoring Annual Report

    Energy Technology Data Exchange (ETDEWEB)

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2005-09-30

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  4. Delaware Basin Monitoring Annual Report

    Energy Technology Data Exchange (ETDEWEB)

    Washington Regulatory and Environmental Services; Washington TRU Solutions LLC

    2004-09-30

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  5. Deleware Basin Monitoring Annual Report

    International Nuclear Information System (INIS)

    2000-01-01

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  6. Delaware Basin Monitoring Annual Report

    International Nuclear Information System (INIS)

    2005-01-01

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  7. Delaware Basin Monitoring Annual Report

    International Nuclear Information System (INIS)

    2002-01-01

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  8. Delaware Basin Monitoring Annual Report

    International Nuclear Information System (INIS)

    2004-01-01

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  9. Delaware Basin Monitoring Annual Report

    International Nuclear Information System (INIS)

    2003-01-01

    The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.

  10. Abordagens da leitura

    Directory of Open Access Journals (Sweden)

    Angela B. Kleiman

    2004-03-01

    Full Text Available Este trabalho tem por objetivo evidenciar as abordagens da leitura da Lingüística Aplicada, tanto na pesquisa quanto no ensino da leitura ao longo de vinte e cinco anos de pesquisa sobre o assunto nesse campo. Na primeira parte do texto, examinamos as transformações teórico-metodológicas da pesquisa na área; na segunda, focalizamos as transformações no campo didático, reconstituindo as abordagens didáticas mediante a análise de texto em três livros didáticos com a finalidade de determinar o perfil de leitor pressuposto nos manuais, comparando-o com a caracterização do sujeito leitor na pesquisa.

  11. Het Italiaanse voorzetsel da

    NARCIS (Netherlands)

    Boer, M.G. de

    2010-01-01

    SAMENVATTING In een voorzetselstudie in het kader van Jackendoffs semantische theorie wordt het sterk polyseme Italiaanse voorzetsel da geanalyseerd als een verzameling deelbetekenissen waarbij de meeste door een of meer semantische regels afgeleid kunnen worden van de basisbetekenis ruimtelijke

  12. Contribution to the stratigraphy of the onshore Paraíba Basin, Brazil

    Directory of Open Access Journals (Sweden)

    Dilce F. Rossetti

    2012-06-01

    Full Text Available Several publications have contributed to improve the stratigraphy of the Paraíba Basin in northeastern Brazil. However, the characterization and distribution of sedimentary units in onshore areas of this basin are still incomplete, despite their significance for reconstructing the tectono-sedimentary evolution of the South American passive margin. This work provides new information to differentiate among lithologically similar strata, otherwise entirely unrelated in time. This approach included morphological, sedimentological and stratigraphic descriptions based on surface and sub-surface data integrated with remote sensing, optically stimulated luminescence dating, U+Th/He dating of weathered goethite, and heavy mineral analysis. Based on this study, it was possible to show that Cretaceous units are constrained to the eastern part of the onshore Paraíba Basin. Except for a few outcrops of carbonatic rocks nearby the modern coastline, deposits of this age are not exposed to the surface in the study area. Instead, the sedimentary cover throughout the basin is constituted by mineralogically and chronologically distinctive deposits, inserted in the Barreiras Formation and mostly in the Post-Barreiras Sediments, of early/middle Miocene and Late Pleistocene-Holocene ages, respectively. The data presented in this work support tectonic deformation as a factor of great relevance to the distribution of the sedimentary units of the Paraíba Basin.Várias publicações têm contribuído para melhorar a estratigrafia da Bacia Paraíba no nordeste do Brasil. Entretanto, a caracterização e distribuição das unidades sedimentares em áreas continentais desta bacia são ainda incompletas, apesar de sua importância para reconstruir a evolução tectono-sedimentar da margem passiva sulamericana. Este trabalho fornece novas informações para diferenciar entre estratos litologicamente similares que, por outro lado, não são relacionados no tempo. Esta

  13. East Asia basin Analysis Project

    International Nuclear Information System (INIS)

    Terman, M.J.

    1986-01-01

    The United Nations-related Committee for Coordination of Joint Prospecting for Mineral Resources in Asian Offshore Areas (CCOP), in cooperation with the International Union of Geological Sciences and Circum-Pacific Council, is implementing the East Asia Basin Analysis Project. National and regional organizations, principally members of the ASEAN Council of Petroleum, are compiling maps at a scale of 1:2 million and stratigraphic cross sections of basins, with particular initial emphasis on defining and assessing oil and gas plays and with later analytical focus on other sedimentary minerals (e.g., coal, phosphate, evaporites, and uranium). Completion is anticipated in 1988. Two major elements of the project are being contributed from other agencies. (1) Base maps. - The US Geological Survey (USGS) has partly compiled eight sheets covering east Asia that show bathymetry, shorelines, and drainage systems. One sheet also presents topography and selected cultural features. All sheets are scheduled to be completed in 1987. (2) Geotectonic maps. - The Working Group on Studies of East Asian Tectonics and Resources (SEATAR) is now completing 10 transect studies with crustal profiles and strip maps at a scale of 1:1 million. One map for each transect shows a plate tectonic interpretation. Transect coordinators or others will be encouraged to extrapolate between the strips and complete the geotectonic interpretation (on USGS bases) in 1987. The IGCP Project 220 is also compiling on (USGS bases) the tin and tungsten granites of east Asia, emphasizing geochemical data needed to identify predictive models. Other mapping will probably follow mineral-deposit modeling workshops on ophiolotic chromite and regional symposia on oceanic massive sulfide and subvolcanic gold and base metals. Completion may be possible by 1989

  14. Evaporitic minibasins of the Sivas Basin (Turkey)

    Science.gov (United States)

    Pichat, Alexandre; Hoareau, Guilhem; Callot, Jean-Paul; Ringenbach, Jean-Claude; Kavak, Kaan

    2017-04-01

    The Oligo-Miocene Sivas basin (Turkey) was strongly affected by salt tectonics, best expressed in its central part. Halokinesis initiated from a main evaporite layer deposited during the Upper Eocene. Such evaporitic accumulations led to two generations of mini basins filled with continental to marine deposits, and nowadays separated by diapiric gypsum walls or welds. Some mini-basins developed above depleting diapirs, filled by more than 50 % of lacustrine to sebkhaic gypsiferous facies. These evaporitic mini-basins (EMB) developed during periods of limited fluvial input, when diapiric stems were outcropping with insignificant topographic reliefs. Chemical analyses (S, O and Sr) suggest that such evaporites were sourced from the recycling of adjacent salt structures. EMB development above diapirs can be explained by (i) high regional accommodation (Ribes et al., 2016), (ii) erosion of the diapiric crests by the fluvial system preceding evaporite deposition, (iii) deflation of some diapirs in a transtensive setting (Kergaravat, 2015), and (iv) fast sedimentation rate of the evaporites. EMB stand out from other siliciclastic mini-basins of the Sivas Basin by (i) their small dimension (sedimentation rate of the evaporites and (iii) the high density of the gypsum and anhydrite compared to halite. The Great Kavir in Iran could display present day analogues relevant of early-stage EMB. Finally, although EMB have never been identified in other ancient halokinetic settings, they may have developed in arid, continental environments such as in the Precaspian Basin.

  15. Submarine landslides in Arctic sedimentation: Canada Basin

    Science.gov (United States)

    Mosher, David C.; Shimeld, John; Hutchinson, Deborah R.; Lebedova-Ivanova, N; Chapman, C.

    2016-01-01

    Canada Basin of the Arctic Ocean is the least studied ocean basin in the World. Marine seismic field programs were conducted over the past 6 years using Canadian and American icebreakers. These expeditions acquired more than 14,000 line-km of multibeam bathymetric and multi-channel seismic reflection data over abyssal plain, continental rise and slope regions of Canada Basin; areas where little or no seismic reflection data existed previously. Canada Basin is a turbidite-filled basin with flat-lying reflections correlateable over 100s of km. For the upper half of the sedimentary succession, evidence of sedimentary processes other than turbidity current deposition is rare. The Canadian Archipelago and Beaufort Sea margins host stacked mass transport deposits from which many of these turbidites appear to derive. The stratigraphic succession of the MacKenzie River fan is dominated by mass transport deposits; one such complex is in excess of 132,000 km2 in area and underlies much of the southern abyssal plain. The modern seafloor is also scarred with escarpments and mass failure deposits; evidence that submarine landsliding is an ongoing process. In its latest phase of development, Canada Basin is geomorphologically confined with stable oceanographic structure, resulting in restricted depositional/reworking processes. The sedimentary record, therefore, underscores the significance of mass-transport processes in providing sediments to oceanic abyssal plains as few other basins are able to do.

  16. Pelos caminhos da fotografia

    OpenAIRE

    Hoffmann, Maria Luisa; Doutoranda pela USP. Docente na UNOESTE e UEL.

    2013-01-01

    Resenha de: A transição tecnológica do fotojornalismo: da câmara escura ao digital,de Ivan Luiz Giacomelli. Florinaópolis, Insular, 2012, 136pResenha de: A transição tecnológica do fotojornalismo: da câmara escura ao digital,de Ivan Luiz Giacomelli. Florinaópolis, Insular, 2012, 136p

  17. Cross-comparison of climate change adaptation strategies across large river basins in Europe, Africa and Asia

    Czech Academy of Sciences Publication Activity Database

    Krysanova, V.; Dickens, C.; Timmerman, J.; Varela-Ortega, C.; Schlüter, M.; Roest, K.; Huntjens, P.; Jaspers, F.; Buiteveld, H.; Moreno, E.; de Pedraza Carrera, J.; Slámová, Romana; Martínková, M.; Blanco, I.; Esteve, P.; Pringle, K.; Pahl-Wostl, C.; Kabat, P.

    2010-01-01

    Roč. 24, č. 14 (2010), s. 4121-4160 ISSN 0920-4741 EU Projects: European Commission(XE) 511179 - NEWATER Institutional research plan: CEZ:AV0Z20600510 Keywords : adaptation to climate change * water management * questionnaire * barrier * driver * climate change * river basin * Amudarya * Elbe * Guadiana * Nile equatorial lakes region * Orange * Rhine Subject RIV: DA - Hydrology ; Limnology Impact factor: 2.201, year: 2010

  18. Utilização do mecanismo de transposição de peixes da Usina Hidrelétrica Santa Clara por camarões (Palaemonidae, bacia do rio Mucuri, Minas Gerais, Brasil Use of Santa Clara Power Plant fish lift by Palaemonidae shrimps, Mucuri River basin, Minas Gerais, Brazil

    Directory of Open Access Journals (Sweden)

    Paulo dos S. Pompeu

    2006-03-01

    Full Text Available Durante a operação do elevador para peixes da Usina Hidrelétrica Santa Clara, de novembro de 2003 a março de 2004, todos os crustáceos palaemonídeos adultos que utilizaram o mecanismo foram contados e o número de jovens estimado. Duas espécies foram registradas: Macrobrachium carcinus (Linnaeus, 1758 e Macrobrachium acanthurus (Wiegmann, 1836. A utilização do mecanismo por adultos foi bastante restrita, com apenas 185 exemplares registrados. Porém, o número de jovens de M. carcinus utilizando o elevador foi estimado em 19.120 indivíduos. Embora o mecanismo avaliado tenha permitido a passagem dos palaemonídeos para montante do barramento, ficou clara a necessidade de novos arranjos estruturais e de manejo específicos para esses animais. Essas ações se referem ao desenvolvimento de estruturas direcionadas para a sua passagem e a adoção de vertimentos programados durante o período reprodutivo para permitir o carreamento de larvas para jusante. Esses dois caminhos representam formas efetivas de manejo, imprescindíveis para a manutenção das populações deste importante componente da biota aquática.During the Santa Clara Power Plant fish lift operation, from November 2003 to March 2004, Palaemonidae adult specimens were counted and identified and estimated juveniles number. Two Palaemonidae species were recorded: Macrobrachium carcinus (Linnaeus, 1758 and Macrobrachium acanthurus (Wiegmann, 1836. The use of the fish lift by adults was restricted, since only 185 individuals were registered. However, the estimated juveniles number was 19,120 individuals. Although existing fish passage systems could be considered as an alternative for Palaemonidae migration, planned spills during the reproductive periods could allow the drift of larvae. Moreover, the constructions of specific structures for upstream migration should be considered as an alternative for the maintenance of this important component of aquatic biota.

  19. Damming the rivers of the Amazon basin.

    Science.gov (United States)

    Latrubesse, Edgardo M; Arima, Eugenio Y; Dunne, Thomas; Park, Edward; Baker, Victor R; d'Horta, Fernando M; Wight, Charles; Wittmann, Florian; Zuanon, Jansen; Baker, Paul A; Ribas, Camila C; Norgaard, Richard B; Filizola, Naziano; Ansar, Atif; Flyvbjerg, Bent; Stevaux, Jose C

    2017-06-14

    More than a hundred hydropower dams have already been built in the Amazon basin and numerous proposals for further dam constructions are under consideration. The accumulated negative environmental effects of existing dams and proposed dams, if constructed, will trigger massive hydrophysical and biotic disturbances that will affect the Amazon basin's floodplains, estuary and sediment plume. We introduce a Dam Environmental Vulnerability Index to quantify the current and potential impacts of dams in the basin. The scale of foreseeable environmental degradation indicates the need for collective action among nations and states to avoid cumulative, far-reaching impacts. We suggest institutional innovations to assess and avoid the likely impoverishment of Amazon rivers.

  20. Deep controls on intraplate basin inversion

    DEFF Research Database (Denmark)

    Nielsen, S.B.; Stephenson, Randell Alexander; Schiffer, Christian

    2014-01-01

    favourably orientated with respect to pre-existing structures in the lithosphere. Furthermore, stresses derived from lithospheric potential energy variations as well as those from plate boundary forces must be taken into account in order to explain intraplate seismicity and deformation such as basin......Basin inversion is an intermediate-scale manifestation of continental intraplate deformation, which produces earthquake activity in the interior of continents. The sedimentary basins of central Europe, inverted in the Late Cretaceous– Paleocene, represent a classic example of this phenomenon...

  1. K Basins isolation barriers summary report

    Energy Technology Data Exchange (ETDEWEB)

    Strickland, G.C., Westinghouse Hanford

    1996-07-31

    The 105-K East and 105-K West fuel storage basins (105-K Basins) were designed and constructed in the early 1950`s for interim storage of irradiated fuel following its discharge from the reactors. The 105-K- East and 105-K West reactor buildings were constructed first, and the associated storage basins were added about a year later. The construction joint between each reactor building structure and the basin structure included a flexible membrane waterstop to prevent leakage. Water in the storage basins provided both radiation shielding and cooling to remove decay heat from stored fuel until its transfer to the Plutonium Uranium Extraction (PUREX) Facility for chemical processing. The 105-K West Reactor was permanently shut down in February 1970; the 105-K East Reactor was permanently shut down in February 1971. Except for a few loose pieces, fuel stored in the basins at that time was shipped to the PUREX Facility for processing. The basins were then left idle but were kept filled with water. The PUREX Facility was shut down and placed on wet standby in 1972 while N Reactor continued to operate. When the N Reactor fuel storage basin began to approach storage capacity, the decision was made to modify the fuel storage basins at 105-K East and 105-K West to provide additional storage capacity. Both basins were subsequently modified (105-K East in 1975 and 105-K West in 1981) to provide for the interim handling and storage of irradiated N Reactor fuel. The PUREX Facility was restarted in November 1983 to provide 1698 additional weapons-grade plutonium for the United States defense mission. The facility was shut down and deactivated in December 1992 when the U.S. Department of Energy (DOE) determined that the plant was no longer needed to support weapons-grade plutonium production. When the PUREX Facility was shut down, approximately 2.1 x 1 06 kg (2,100 metric tons) of irradiated fuel aged 7 to 23 years was left in storage in the 105-K Basins pending a decision on

  2. Western Gas Sands Project. Quarterly Basin Activities Report

    Energy Technology Data Exchange (ETDEWEB)

    Atkinson, C H

    1979-01-31

    This report is a summation of 3 months' drilling and testing activities in the four primary WGSP study areas: Greater Green River Basin, Northern Great Plains Province, Piceance Basin, and Uinta Basin. The monitoring of basin activities is part of resource assessment. (DLC)

  3. Gravity and geothermal anomalies in Borno Basin, Nigeria ...

    African Journals Online (AJOL)

    Some prominent geothermal anomalies are found occurring in association with gravity anomalies in the Borno basin. Similar gravity anomalies also occur in the Benue and Niger (Nupe) basins. Both the geothermal and gravity anomalies of Borno basin are trending NW-SE similar to the Niger (Nupe) basin, while the Benue ...

  4. Prediction method of sediment discharge from forested basin

    Science.gov (United States)

    Kazutoki Abe; Ushio Kurokawa; Robert R. Ziemer

    2000-01-01

    An estimation model for sediment discharge from a forested basin using Universal Soil Loss Equation and delivery ratio was developed. Study basins are North fork and South fork in Caspar Creek, north California, where Forest Service, USDA has been using water and sediment discharge from both basins since 1962. The whole basin is covered with the forest, mainly...

  5. Synchronization and basin bifurcations in mutually coupled oscillators

    Indian Academy of Sciences (India)

    ... basin bifurcation sequences occur leading to + 1, ≥ 2 basins as the coupling is varied – a signature of Wada structure and final-state sensitivity. However, in the region of complete synchronization, the basins structure is identical with that of the single oscillators and retains its essential features including fractal basin ...

  6. As dobras da imagem

    Directory of Open Access Journals (Sweden)

    Profª. Drª. Fátima Antunes da Silva (Yaska Antunes

    2009-05-01

    Full Text Available O presente trabalho tem por objetivo tentar compreender a produção da imagem visual no teatro. Para isso se vale da apropriação livre do conceito de “dobra? de Gilles Deleuze para se referir à multiplicidade de imagens criadas pelas diversas modalidades artísticas. Como no teatro há o entrelaçamento de imagens verbais – palavras enunciadas pelo texto dramático ou teatral – com imagens visuais – a visualidade advinda da composição cênica concreta que organiza no espaço ator e objeto –, a ênfase só podia recair sobre estas duas formas imagéticas. No caso do teatro, surge ainda a percepção de que para além da materialidade da cena, outras imagens emergem do confronto entre palco e platéia. Nesse sentido, imagem teatral seria então aquilo que surge da interação entre ator e espectador. A contribuição desse trabalho pode estar no fato de atualizar certos conceitos sobre a criação da imagem poética na poesia e no cinema para aplicá-los ao teatro. Ao recuperar o pensa-mento de Otávio Paz, Alfredo Bosi, Sergei Eisenstein, entre outros, bus-ca-se promover uma reflexão mais aprofundada sobre a construção visual no teatro.

  7. K-Basins S/RIDS

    Energy Technology Data Exchange (ETDEWEB)

    Watson, D.J.

    1997-08-01

    The Standards/Requirements Identification Document (S/RID) is a list of the Environmental, Safety, and Health (ES{ampersand}H) and Safeguards and Security (SAS) standards/requirements applicable to the K Basins facility.

  8. VT Lakes and Ponds Drainage Basins

    Data.gov (United States)

    Vermont Center for Geographic Information — (Link to Metadata) The WaterHydro_LKBSPRE layer consists of drainage basins for water bodies of approximately five or more acres. The data was digitized from...

  9. K-Basins S/RIDS

    International Nuclear Information System (INIS)

    Watson, D.J.

    1997-01-01

    The Standards/Requirements Identification Document (S/RID) is a list of the Environmental, Safety, and Health (ES(ampersand)H) and Safeguards and Security (SAS) standards/requirements applicable to the K Basins facility

  10. K-Basins S/RIDS

    Energy Technology Data Exchange (ETDEWEB)

    Watson, D.J.

    1995-09-22

    The Standards/Requirements Identification Document(S/RID) is a list of the Environmental, Safety, and Health (ES&H) and Safeguards and Security (SAS) standards/requirements applicable to the K Basins facility

  11. 183-H Basin sludge treatability test report

    International Nuclear Information System (INIS)

    Biyani, R.K.

    1995-01-01

    This document presents the results from the treatability testing of a 1-kg sample of 183-H Basin sludge. Compressive strength measurements, Toxic Characteristic Leach Procedure, and a modified ANSI 16.1 leach test were conducted

  12. Pumices from the Central Indian Ocean Basin

    Digital Repository Service at National Institute of Oceanography (India)

    Iyer, S.D.

    sediments are significant not only volumetrically but also as indicators of tectonic environments. A few studies in the past concerning the volcanogenic components in the Indian Ocean are informative but these do not pertain to the Central Indian Ocean Basin...

  13. KE Basin water dispositioning engineering study

    International Nuclear Information System (INIS)

    Hunacek, G.S.; Gahir, S.S.

    1994-01-01

    This engineering study is a feasibility study of KE Basin water treatment to an acceptable level and dispositioning the treated water to Columbia River, ground through ETF or to air through evaporation

  14. Climate change and the Great Basin

    Science.gov (United States)

    Jeanne C. Chambers

    2008-01-01

    Climate change is expected to have significant impacts on the Great Basin by the mid-21st century. The following provides an overview of past and projected climate change for the globe and for the region.

  15. Program Updates - San Antonio River Basin

    Science.gov (United States)

    This page will house updates for this urban waters partnership location. As projects progress, status updates can be posted here to reflect the ongoing work by partners in San Antonio working on the San Antonio River Basin.

  16. River Basin Standards Interoperability Pilot

    Science.gov (United States)

    Pesquer, Lluís; Masó, Joan; Stasch, Christoph

    2016-04-01

    There is a lot of water information and tools in Europe to be applied in the river basin management but fragmentation and a lack of coordination between countries still exists. The European Commission and the member states have financed several research and innovation projects in support of the Water Framework Directive. Only a few of them are using the recently emerging hydrological standards, such as the OGC WaterML 2.0. WaterInnEU is a Horizon 2020 project focused on creating a marketplace to enhance the exploitation of EU funded ICT models, tools, protocols and policy briefs related to water and to establish suitable conditions for new market opportunities based on these offerings. One of WaterInnEU's main goals is to assess the level of standardization and interoperability of these outcomes as a mechanism to integrate ICT-based tools, incorporate open data platforms and generate a palette of interchangeable components that are able to use the water data emerging from the recently proposed open data sharing processes and data models stimulated by initiatives such as the INSPIRE directive. As part of the standardization and interoperability activities in the project, the authors are designing an experiment (RIBASE, the present work) to demonstrate how current ICT-based tools and water data can work in combination with geospatial web services in the Scheldt river basin. The main structure of this experiment, that is the core of the present work, is composed by the following steps: - Extraction of information from river gauges data in OGC WaterML 2.0 format using SOS services (preferably compliant to the OGC SOS 2.0 Hydrology Profile Best Practice). - Model floods using a WPS 2.0, WaterML 2.0 data and weather forecast models as input. - Evaluation of the applicability of Sensor Notification Services in water emergencies. - Open distribution of the input and output data as OGC web services WaterML, / WCS / WFS and with visualization utilities: WMS. The architecture

  17. Geo-economy of the Caspian basin

    International Nuclear Information System (INIS)

    Raballand, G.

    2003-05-01

    The Caspian area is essential for the development of the central Asia countries and Caucasus. Excepted the Iran and the Russia, these areas economy is poor. The hydrocarbons exploitation should reinforce the economic weight of these States. The author analyzes the Caspian area economies and shows that the basin economies are confronted with three handicaps, and that even with different economic ways, the soviet economic system is still present in the basin. (A.L.B.)

  18. Are calanco landforms similar to river basins?

    Science.gov (United States)

    Caraballo-Arias, N A; Ferro, V

    2017-12-15

    In the past badlands have been often considered as ideal field laboratories for studying landscape evolution because of their geometrical similarity to larger fluvial systems. For a given hydrological process, no scientific proof exists that badlands can be considered a model of river basin prototypes. In this paper the measurements carried out on 45 Sicilian calanchi, a type of badlands that appears as a small-scale hydrographic unit, are used to establish their morphological similarity with river systems whose data are available in the literature. At first the geomorphological similarity is studied by identifying the dimensionless groups, which can assume the same value or a scaled one in a fixed ratio, representing drainage basin shape, stream network and relief properties. Then, for each property, the dimensionless groups are calculated for the investigated calanchi and the river basins and their corresponding scale ratio is evaluated. The applicability of Hack's, Horton's and Melton's laws for establishing similarity criteria is also tested. The developed analysis allows to conclude that a quantitative morphological similarity between calanco landforms and river basins can be established using commonly applied dimensionless groups. In particular, the analysis showed that i) calanchi and river basins have a geometrically similar shape respect to the parameters Rf and Re with a scale factor close to 1, ii) calanchi and river basins are similar respect to the bifurcation and length ratios (λ=1), iii) for the investigated calanchi the Melton number assumes values less than that (0.694) corresponding to the river case and a scale ratio ranging from 0.52 and 0.78 can be used, iv) calanchi and river basins have similar mean relief ratio values (λ=1.13) and v) calanchi present active geomorphic processes and therefore fall in a more juvenile stage with respect to river basins. Copyright © 2017 Elsevier B.V. All rights reserved.

  19. Population structure of the deep sea hermit-crab Catapaguroides microps (Paguroidea, Anomura in the Campos Basin, RJ, Brazil

    Directory of Open Access Journals (Sweden)

    Luana S. F. Lins

    2010-01-01

    Full Text Available The population of Catapaguroides microps A. Milne-Edwards and Bouvier, 1892 in the Campos Basin was studied with an emphasis on its composition in the Northern and Southern parts of the Basin, the different gender sizes, sex ratio, and size class distribution. Specimens were collected under the "Program for the Environmental Characterization of the deep waters of the Campos Basin" ("Programa de Caracterização Ambiental das Águas Profundas da Bacia de Campos" in February and August 2003. A total of 339 hermit crabs were analyzed. Individual abundance was higher in the North. C. microps shows sexual dimorphism for body size, the males being larger than the females. The sex ratio is skewed in the female's favor (1:0.7, as shown by previous studies on shallow-water populations.A população de Catapaguroides microps A. Milne-Edwards and Bouvier, 1892 da foi analisada com foco na abundância de indivíduos, diferença de tamanho entre machos e fêmeas, razão sexual e distribuição dos indivíduos nas classes de tamanho, ao norte e ao sul da Bacia de Campos. As amostras foram coletadas pelo Programa de Caracterização Ambiental da Bacia de Campos em fevereiro e agosto de 2003. O total de indivíduos analizados foi de 339. A abundância foi maior no norte da Bacia de Campos. Catapaguroides microps mostrou dimorfismo sexual no tamanho do corpo, sendo os machos maiores que as fêmeas. A razão sexual favorece as fêmeas (1:0,7, de forma similar a outros estudos efetuados com populações de águas rasas.

  20. Water scarcity in the Jordan River basin.

    Science.gov (United States)

    Civic, M A

    1999-03-01

    This article reports the problem on water scarcity in the Jordan River basin. In the Jordan River basin, freshwater scarcity results from multiple factors and most severely affects Israel, Jordan, the West Bank, and the Gaza Strip. One of these multiple factors is the duration of rainfall in the region that only occurs in a small area of highlands in the northwest section. The varying method of water use parallels that of Israel that utilizes an estimated 2000 million cu. m. The national patterns of water usage and politically charged territorial assertions compound the competition over freshwater resources in the region. The combination of political strife, resource overuse, and contaminated sources means that freshwater scarcity in the Jordan River basin will reach a critical level in the near future. History revealed that the misallocation/mismanagement of freshwater from the Jordan River basin was the result of centuries of distinct local cultural and religious practices combined with historical influences. Each state occupying near the river basin form their respective national water development schemes. It was not until the mid-1990s that a shared-use approach was considered. Therefore, the critical nature of water resource, the ever-dwindling supply of freshwater in the Jordan River basin, and the irrevocability of inappropriate policy measures requires unified, definitive, and ecologically sound changes to the existing policies and practices to insure an adequate water supply for all people in the region.

  1. Estimating tectonic history through basin simulation-enhanced seismic inversion: Geoinformatics for sedimentary basins

    Science.gov (United States)

    Tandon, K.; Tuncay, K.; Hubbard, K.; Comer, J.; Ortoleva, P.

    2004-01-01

    A data assimilation approach is demonstrated whereby seismic inversion is both automated and enhanced using a comprehensive numerical sedimentary basin simulator to study the physics and chemistry of sedimentary basin processes in response to geothermal gradient in much greater detail than previously attempted. The approach not only reduces costs by integrating the basin analysis and seismic inversion activities to understand the sedimentary basin evolution with respect to geodynamic parameters-but the technique also has the potential for serving as a geoinfomatics platform for understanding various physical and chemical processes operating at different scales within a sedimentary basin. Tectonic history has a first-order effect on the physical and chemical processes that govern the evolution of sedimentary basins. We demonstrate how such tectonic parameters may be estimated by minimizing the difference between observed seismic reflection data and synthetic ones constructed from the output of a reaction, transport, mechanical (RTM) basin model. We demonstrate the method by reconstructing the geothermal gradient. As thermal history strongly affects the rate of RTM processes operating in a sedimentary basin, variations in geothermal gradient history alter the present-day fluid pressure, effective stress, porosity, fracture statistics and hydrocarbon distribution. All these properties, in turn, affect the mechanical wave velocity and sediment density profiles for a sedimentary basin. The present-day state of the sedimentary basin is imaged by reflection seismology data to a high degree of resolution, but it does not give any indication of the processes that contributed to the evolution of the basin or causes for heterogeneities within the basin that are being imaged. Using texture and fluid properties predicted by our Basin RTM simulator, we generate synthetic seismograms. Linear correlation using power spectra as an error measure and an efficient quadratic

  2. Wyoming Basin Rapid Ecoregional Assessment

    Science.gov (United States)

    Carr, Natasha B.; Melcher, Cynthia P.

    2015-08-28

    The Wyoming Basin Rapid Ecoregional Assessment was conducted in partnership with the Bureau of Land Management (BLM). The overall goals of the BLM Rapid Ecoregional Assessments (REAs) are to identify important ecosystems and wildlife habitats at broad spatial scales; identify where these resources are at risk from Change Agents, including development, wildfire, invasive species, disease and climate change; quantify cumulative effects of anthropogenic stressors; and assess current levels of risk to ecological resources across a range of spatial scales and jurisdictional boundaries by assessing all lands within an ecoregion. There are several components of the REAs. Management Questions, developed by the BLM and stakeholders for the ecoregion, identify the regionally significant information needed for addressing land-management responsibilities. Conservation Elements represent regionally significant species and ecological communities that are of management concern. Change Agents that currently affect or are likely to affect the condition of species and communities in the future are identified and assessed. REAs also identify areas that have high conservation potential that are referred to as “large intact areas.” At the ecoregion level, the ecological value of large intact areas is based on the assumption that because these areas have not been greatly altered by human activities (such as development), they are more likely to contain a variety of plant and animal communities and to be resilient and resistant to changes resulting from natural disturbances such as fire, insect outbreaks, and disease.

  3. Pedagogia da afetividade

    OpenAIRE

    El Achkar, Dalal

    2003-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de Produção. Este trabalho avalia a importância da afetividade como aspecto fundamental para a educação. Diversos autores sustentam teoricamente a necessidade de propostas de ensino-aprendizagem que valorizem os aspectos afetivos, a emoção do ser humano, entre eles a proposta da Escola do Futuro. A relação entre essas propostas teóricas e as iniciativas de professore...

  4. Depois da democracia racial

    OpenAIRE

    Guimarães,Antonio Sérgio Alfredo

    2006-01-01

    Neste artigo, meu objetivo é refletir sobre um cenário futuro, que se torna cada vez mais real e próximo: aquele em que as desigualdades raciais no Brasil convivem com um regime de Estado do qual as organizações negras e outras organizações populares participam ativamente na formulação de políticas multiculturalistas e no qual a ideologia da democracia racial cessou de ser hegemônica. Se, por um lado, nesse cenário, ganhamos efetiva consciência das limitações de nossa democracia, da heterogen...

  5. ESPIRITUALIDADES PLURAIS DA REFORMA

    OpenAIRE

    Cláudio Oliveira Ribeiro

    2017-01-01

    RESUMO: A pesquisa centrou-se na análise do percurso teológico da Reforma Protestante, enfatizando a pluralidade dela, as visões politicamente distintas entre seus protagonistas como Martinho Lutero, João Calvino e Thomas Müntzer, e as práticas e espiritualidades igualmente distintas até os dias de hoje. Metodologicamente, seguimos a noção da história como interpretação e o potencial criativo dos entre-lugares culturais, valorizando os aspectos utópicos que possam ser reforçados pela avaliaçã...

  6. A IDEOLOGIA DA MORTE

    OpenAIRE

    Silveira, Luís Gustavo Guadalupe

    2012-01-01

    Marcuse aborda o caráter ideológico da morte por meio da análise de alguns de seus aspectos biológicos, históricos, sociais, filosóficos e religiosos. O autor reflete a propósito de como o poder sobre a morte também se torna poder sobre a vida das pessoas. Desse modo, libertar-se do modo de vida repressivo significa assenhorear-se de sua própria morte.

  7. Petroleum systems in rift basins – a collective approach in South-east Asian basins.

    NARCIS (Netherlands)

    Doust, H.; Sumner, D.

    2007-01-01

    This paper synthesizes some of the main conclusions reached in a recent regional review of the Tertiary basins of Southeast Asia, carried out by Shell. Four distinctive types of petroleum systems, correlating with the four main stages of basin evolution (early to late syn-rift and early to late

  8. Implication of drainage basin parameters of a tropical river basin of South India

    Science.gov (United States)

    Babu, K. J.; Sreekumar, S.; Aslam, Arish

    2016-03-01

    Drainage morphometry provides quantitative description of the drainage system which is an important aspect of the characterisation of watersheds. Chalakudi River is one of the important rivers of the South India which has attracted attention of many environmental scientists recently because of the proposed Athirapally Hydel Project across the river. SRTM (Shuttle Radar Topographic Mission) data were used for preparing DEM (Digital Elevation Model), Aspect Map and Slope Map. Geographical Information System (GIS) was used for the evaluation of linear, areal and relief aspects of morphometric parameters. The study reveals that the terrain exhibits dentritic and trellis pattern of drainage. The Chalakudi River Basin has a total area of 1,448.73 km2 and is designated as seventh-order basin. The drainage density of the basin is estimated as 2.54 and the lower-order streams mostly dominate the basin. The high basin relief indicates high runoff and sediment transport. The elongation ratio of the Chalakudi Basin is estimated as 0.48 and indicates that the shape of the basin is elongated. The development of stream segments in the basin area is more or less effected by rainfall. Relief ratio indicates that the discharge capability of watershed is very high and the groundwater potential is meagre. The low value of drainage density in spite of mountainous relief indicates that the area is covered by dense vegetation and resistant rocks permeated by fractures and joints. These studies are helpful in watershed development planning and wise utilization of natural resources.

  9. Profilaxia da peste

    Directory of Open Access Journals (Sweden)

    Renato dos Santos Araújo

    1967-12-01

    Full Text Available O autor parte da premissa de que a profilaxia da doença infecciosa decorre do encadeamento epidemiológico: fonte de infecção-veículo transmissor - receptivel, para explicar a da peste, baseada no mesmo princípio. Depois de citar os 4 principais complexos epidemiológicos da peste e afirmar que tôda a profilaxia da doença consiste em atingir os dois primeiros elos dessas cadeias e proteger o último, passa a classificar os vários métodos profiláticos empregados em 2 grandes grupos: o das medidas destrutivas ou provisórias e o das medidas supressivas ou definitivas. Entre as primeiras arrola a desratização e a despulização, às quais acrescenta o tratamento e isolamento do doente e do portaãor, e entre as segundas inclui a anti-ratização e a imunização. A seguir, passa a explicar em que consistem essas várias medidas profiláticas e quais os agentes de que se tem lançado mão para executá-las, expendendo ao curso dessa exposição o conceito que formula a respeito de cada uma delas, à guisa de apreciação do seu valor relativo. Enaltece sobretudo as medidas supressivas ou definitivas, às quais empresta a maior significação na luta antipestosa, chamando a atenção, em especial, para a necessidade de estudos imunológicos para aperfeiçoamento do poder imunitário das vacinas de germes vivos avirulentos, que considera um grande recurso para a profilaxia da doença, sobretudo para a proteção do rurícola, cujo labor e modo de vida o expõem inevitavelmente a se infectar, por ocasião da ocorrência de epizootias de origem silvestre. Concluída essa primeira parte, passa a fazer o histórico de como se desenvolveu a campanha contra a peste, no Brasil, desde a época da sua invasão em 1899 pelo pôrto de Santos até os nossos dias. Nesse histórico, detem-se um pouco para expôr a atuação do extinto Serviço Nacional de Peste, o qual, criado em 1941, após a reorganização do Departamento Nacional de Saúde, passou

  10. The long wavelength topography of Beethoven and Tolstoj basins, Mercury

    Science.gov (United States)

    André, Sarah L.; Watters, Thomas R.; Robinson, Mark S.

    2005-11-01

    Topography derived from Mariner 10 stereo images is used to characterize the interior structure of two mercurian basins, Beethoven and Tolstoj. Beethoven and Tolstoj basins are shallow (~2.5 km and ~2 km deep, respectively) and relatively flat-floored. Beethoven basin has an interior topographic rise near the northwest margin. The topography of Beethoven and Tolstoj basins is similar to that of lunar mare-filled basins. Well-developed basin-concentric wrinkle ridges and arcuate graben associated with lunar mascons are absent in both Beethoven and Tolstoj basins. The lack of mascon tectonic features suggests that either 1) the mercurian basins have a relatively thin veneer of fill material, 2) Mercury's elastic lithosphere was too strong for significant lithospheric flexure and subsidence to occur, or 3) the basin fill material has little or no density contrast with the surrounding crust and thus exerts little net load on the mercurian lithosphere.

  11. Petroleum geology of the Palo Duro Basin, Texas Panhandle

    International Nuclear Information System (INIS)

    Rose, P.R.

    1986-03-01

    The Palo Duro Basin, Permian Basin, Texas is an asymmetric, relatively shallow, intracratonic basin in the southern Texas Panhandle filled mostly by Mississippian, Pennsylvanian, and Permian sedimentary rocks. Although deeper and prolific prolific petroleum-producing basins adjoin it on the north (Anadarko Basin), south (Midland Basin), and east (Hardeman Basin), the Palo Duro Basin has produced remarkably small amounts of oil and gas to date. This is all the more noteworthy because the sedimentary sequence and rock types of the basin are similar to those of the adjacent basins. Analyses of the stratigraphic succession and structural configuration of the Palo Duro Basin suggest that adequate reservoir rocks, top-seals, and geologic structures are present. Most of the structures formed early enough to have trapped hydrocarbons if they were migrating in the rock column. Although additional work is under way to properly address the question of the petroleum source rocks, generation, and migration, the general absence of production in the basin may relate to an overall deficiency in hydrocarbon generation within the basin. Geologic information in this report will form part of the basis for further analysis and conclusions on hydrocarbon potential in the Palo Duro Basin

  12. ORIGENS E PROBLEMÁTICA DA SOCIOLOGIA DA LITERATURA

    OpenAIRE

    Miguel Leocádio Araújo Neto

    2016-01-01

    Este artigo faz o percurso das origens da sociologia da literatura aos seus desdobramentos no século XX, levantando os principais questionamentos presentes nos diversos teóricos comentados. Dessa forma, examinam-se os rumos tomados pelas pesquisas que vinculam literatura e sociedade em suas principais configurações. Palavras-chave: Sociologia da literatura; literatura; sociedade.

  13. DA INTANGIBILIDADE DA VERDADE À IMPROPRIEDADE DOS PRINCÍPIOS DA VERDADE MATERIAL E VERDADE FORMAL

    OpenAIRE

    Cardoso, Patrícia de Almeida

    2010-01-01

    A doutrina relaciona com os princípios dispositivo e da livre investigação das provas os princípios da verdade formal e da verdade material, respectivamente. Partindo-se do significado de cada um desses princípios, passando-se pelo conceito filosófico de verdade e da análise sistemática e normativa processual, este trabalho visa constatar a impropriedade da dicotomia entre os princípios da verdade formal e verdade material, atribuindo-lhes um conceito mais apropriado - o juízo de verossimilha...

  14. Evapotranspiration seasonality across the Amazon Basin

    Directory of Open Access Journals (Sweden)

    E. E. Maeda

    2017-06-01

    Full Text Available Evapotranspiration (ET of Amazon forests is a main driver of regional climate patterns and an important indicator of ecosystem functioning. Despite its importance, the seasonal variability of ET over Amazon forests, and its relationship with environmental drivers, is still poorly understood. In this study, we carry out a water balance approach to analyse seasonal patterns in ET and their relationships with water and energy drivers over five sub-basins across the Amazon Basin. We used in situ measurements of river discharge, and remotely sensed estimates of terrestrial water storage, rainfall, and solar radiation. We show that the characteristics of ET seasonality in all sub-basins differ in timing and magnitude. The highest mean annual ET was found in the northern Rio Negro basin (∼ 1497 mm year−1 and the lowest values in the Solimões River basin (∼ 986 mm year−1. For the first time in a basin-scale study, using observational data, we show that factors limiting ET vary across climatic gradients in the Amazon, confirming local-scale eddy covariance studies. Both annual mean and seasonality in ET are driven by a combination of energy and water availability, as neither rainfall nor radiation alone could explain patterns in ET. In southern basins, despite seasonal rainfall deficits, deep root water uptake allows increasing rates of ET during the dry season, when radiation is usually higher than in the wet season. We demonstrate contrasting ET seasonality with satellite greenness across Amazon forests, with strong asynchronous relationships in ever-wet watersheds, and positive correlations observed in seasonally dry watersheds. Finally, we compared our results with estimates obtained by two ET models, and we conclude that neither of the two tested models could provide a consistent representation of ET seasonal patterns across the Amazon.

  15. Rifting Thick Lithosphere - Canning Basin, Western Australia

    Science.gov (United States)

    Czarnota, Karol; White, Nicky

    2016-04-01

    The subsidence histories and architecture of most, but not all, rift basins are elegantly explained by extension of ~120 km thick lithosphere followed by thermal re-thickening of the lithospheric mantle to its pre-rift thickness. Although this well-established model underpins most basin analysis, it is unclear whether the model explains the subsidence of rift basins developed over substantially thick lithosphere (as imaged by seismic tomography beneath substantial portions of the continents). The Canning Basin of Western Australia is an example where a rift basin putatively overlies lithosphere ≥180 km thick, imaged using shear wave tomography. Subsidence modelling in this study shows that the entire subsidence history of the account for the observed subsidence, at standard crustal densities, the lithospheric mantle is required to be depleted in density by 50-70 kg m-3, which is in line with estimates derived from modelling rare-earth element concentrations of the ~20 Ma lamproites and global isostatic considerations. Together, these results suggest that thick lithosphere thinned to > 120 km is thermally stable and is not accompanied by post-rift thermal subsidence driven by thermal re-thickening of the lithospheric mantle. Our results show that variations in lithospheric thickness place a fundamental control on basin architecture. The discrepancy between estimates of lithospheric thickness derived from subsidence data for the western Canning Basin and those derived from shear wave tomography suggests that the latter technique currently is limited in its ability to resolve lithospheric thickness variations at horizontal half-wavelength scales of <300 km.

  16. Desert basins of the Southwest

    Science.gov (United States)

    Leake, Stanley A.; Konieczki, Alice D.; Rees, Julie A.H.

    2000-01-01

    Ground water is among the Nation’s most important natural resources. It provides drinking water to urban and rural communities, supports irrigation and industry, sustains the flow of streams and rivers, and maintains riparian and wetland ecosystems. In many areas of the Nation, the future sustainability of ground-water resources is at risk from overuse and contamination. Because ground-water systems typically respond slowly to human actions, a long-term perspective is needed to manage this valuable resource. This publication is one in a series of fact sheets that describe ground-water-resource issues across the United States, as well as some of the activities of the U.S. Geological Survey that provide information to help others develop, manage, and protect ground-water resources in a sustainable manner. Ground-water resources in the Southwest are among the most overused in the United States. Natural recharge to aquifers is low and pumping in many areas has resulted in lowering of water tables. The consequences of large-scale removal of water from storage are becoming increasingly evident. These consequences include land subsidence; loss of springs, streams, wetlands and associated habitat; and degradation of water quality. Water managers are now seeking better ways of managing ground-water resources while looking for supplemental sources of water. This fact sheet reviews basic information on ground water in the desert basins of the Southwest. Also described are some activities of the U.S. Geological Survey (USGS) that are providing scientific information for sustainable management of ground-water resources in the Southwest. Ground-water sustainability is defined as developing and using ground water in a way that can be maintained for an indefinite time without causing unacceptable environmental, economic, or social consequences.

  17. O esvaziamento da cultura

    Directory of Open Access Journals (Sweden)

    Andressa Paula de Andrade

    2015-01-01

    Full Text Available Trata-se da resenha da obra "A civilização do espetáculo: uma radiografia do nosso tempo e da nossa cultura" de autoria de Mario Vargas Llosa, ganhador do Nobel de Literatura em 2010. O trabalho busca compreender este tempo em que a diversão assume maior relevância em detrimento da cultura profunda e reflexiva. Destarte, a todo momento se olha para o passado com vistas a examinar este fenômeno que se tornou um verdadeiro "esvaziamento cultural". Outrossim, busca-se elucidar que embora ocorra um progresso científico, acesso a educação e a tecnologia de forma vertiginosa, isso não significa que a as artes avançaram na mesma velocidade, pelo contrário, acabou estagnando e já não visa mais a modificação de estruturas, mas apenas entreter.

  18. Estudo etnobotânico na comunidade de Conceição-Açu (alto da bacia do rio Aricá Açu, MT, Brasil Ethnobotany study in community of Conceição-Açu (on the upper basin of the River Aricá Açu, MT, Brazil

    Directory of Open Access Journals (Sweden)

    Maria Corette Pasa

    2005-06-01

    Full Text Available O presente trabalho tem como objetivo realizar o levantamento etnobotânico de plantas classificadas em diferentes categorias de uso na comunidade de Conceição-Açu, no município de Cuiabá, MT, Brasil e estimar o valor de uso das espécies botânicas em matas de galeria. Entrevistas estruturadas e semi-estruturadas, o uso do questionário foram aplicados em 59 residentes adultos de ambos os sexos. Identificou-se as unidades de paisagem: quintais, roças e matas de galeria e o número total de espécies utilizadas foi de 180. A maioria das plantas foi coletada durante a entrevista e depositadas no Herbário da UFMT. Nos quintais das residências identificou-se 86 espécies, pertencentes a 43 famílias, a maioria cultivada e utilizada como alimento (48,1% e como remédio (44,5%. Nas roças os principais cultivos são: Manihot esculenta L. (100%, Carica papaya L. (76,2%, Musa paradisiaca L. (71,4%, Saccharum officinarum L. (57,1%. Na mata de galeria destacou-se a categoria medicinal (65%, com as espécies: Copaifera langsdorffii Desf. (2,5, Aspidosperma polyneuron Muell. Arg. (2,5, Hymenaea stignocarpa Mart. (2,33, Diptychandra aurantiaca Tul. (2,0, Cariniana rubra Gardner ex. Miers (20 e as famílias botânicas Mimosaceae, Bignoniaceae, Caesalpiniaceae, Fabaceae e Sapindaceae. Os resultados demonstram que a população possui vasto conhecimento das plantas e de suas propriedades de cura.This paper aims at doing the ethnobotany survey of plants classified in different categories of use in the community of Conceição-Açu, in the city of Cuiabá, MT, Brazil and estimate the value of use of the species botanic in the gallery forest. Structured and non-structured interviews and the questionnaire were used in 59 adult dwellers of both sexes. Were identified the landscape units: backyards, husbandry and gallery forest and the total number of used species is the 180. The majority of the plants was collected during the interview and is kept in the

  19. Groundwater quality in the Northern Coast Ranges Basins, California

    Science.gov (United States)

    Mathany, Timothy M.; Belitz, Kenneth

    2015-01-01

    The Northern Coast Ranges (NOCO) study unit is 633 square miles and consists of 35 groundwater basins and subbasins (California Department of Water Resources, 2003; Mathany and Belitz, 2015). These basins and subbasins were grouped into two study areas based primarily on locality. The groundwater basins and subbasins located inland, not adjacent to the Pacific Ocean, were aggregated into the Interior Basins (NOCO-IN) study area. The groundwater basins and subbasins adjacent to the Pacific Ocean were aggregated into the Coastal Basins (NOCO-CO) study area (Mathany and others, 2011).

  20. Tectonostratigraphic evolution of the Williston Basin

    Science.gov (United States)

    Redly, Pal

    In the Williston Basin five regional seismic profiles, covering ˜3090 km were utilized for a comprehensive study of this complex geologic feature. 2300 km field data were added to the existing 790 km profile. The novel seismic information in conjunction with a sizeable number of wireline data and incorporation of structural and isopach maps provided a unique data environment for development of a new elaborate tectonostratigraphic model of this major continental depression. Standard reflection seismic processing procedures were implemented with special emphasis on regional perspectives, including "Earth curvature correction", to generate images of the basin fill. The latter helped to reveal the true nature of this large scale cratonic basin. This novel information permitted new approaches in establishing the deformation styles in the Williston Basin. Structural studies of the newly reprocessed regional seismic profiles revealed the compressional nature of the radially arranged tectonic elements in the center of the basin, and the extensional character of the peripheral regions. The results suggest that axisymmetric deformation controlled the early stages of the Williston Basin area, and was the causal factor of the oval shape of the basin. In the first, "pre-Williston" phase, the region was uplifted by an axisymmetric lithospheric intrusion creating radial extensional signatures in the central zone and compressional structures in the surroundings. Erosion and thermal cooling and/or phase change of the mantle material led to the initiation of the basin subsidence. Consequently, in the "intracratonic phase" (Sauk - Absaroka), the pre-existing radial and circumferentially arranged structures were periodically reactivated in the opposite sense. The active periods were unrelated to global orogenic events of the continent. The exception is the Kaskaskia I (Devonian) interval, when the territory was tilted to the northwest and the axisymmetric cause of the subsidence was

  1. Hydrographic Basins Analysis Using Digital Terrain Modelling

    Science.gov (United States)

    Mihaela, Pişleagă; -Minda Codruţa, Bădăluţă; Gabriel, Eleş; Daniela, Popescu

    2017-10-01

    The paper, emphasis the link between digital terrain modelling and studies of hydrographic basins, concerning the hydrological processes analysis. Given the evolution of computing techniques but also of the software digital terrain modelling made its presence felt increasingly, and established itself as a basic concept in many areas, due to many advantages. At present, most digital terrain modelling is derived from three alternative sources such as ground surveys, photogrammetric data capture or from digitized cartographic sources. A wide range of features may be extracted from digital terrain models, such as surface, specific points and landmarks, linear features but also areal futures like drainage basins, hills or hydrological basins. The paper highlights how the use appropriate software for the preparation of a digital terrain model, a model which is subsequently used to study hydrographic basins according to various geomorphological parameters. As a final goal, it shows the link between digital terrain modelling and hydrographic basins study that can be used to optimize the correlation between digital model terrain and hydrological processes in order to obtain results as close to the real field processes.

  2. Shallow basins on Mercury: Evidence of relaxation?

    Science.gov (United States)

    Mohit, P. Surdas; Johnson, Catherine L.; Barnouin-Jha, Olivier; Zuber, Maria T.; Solomon, Sean C.

    2009-08-01

    Stereo-derived topographic models have shown that the impact basins Beethoven and Tolstoj on Mercury are shallow for their size, with depths of 2.5 and 2 (± 0.7) km, respectively, while Caloris basin has been estimated to be 9 (± 3) km deep on the basis of photoclinometric measurements. We evaluate the depths of Beethoven and Tolstoj in the context of comparable basins on other planets and smaller craters on Mercury, using data from Mariner 10 and the first flyby of the MESSENGER spacecraft. We consider three scenarios that might explain the anomalous depths of these basins: (1) volcanic infilling, (2) complete crustal excavation, and (3) viscoelastic relaxation. None of these can be ruled out, but the fill scenario would imply a thick lithosphere early in Mercury's history and the crustal-excavation scenario a pre-impact crustal thickness of 15-55 km, depending on the density of the crust, in the area of Beethoven and Tolstoj. The potential for viscous relaxation of Beethoven, Tolstoj, and Caloris is explored with a viscoelastic model. Results show that relaxation of these basins could occur at plausible heat flux values for a range of crustal thicknesses. However, the amplitude of current topographic relief points to a crustal thickness of at least 60 km under this hypothesis. Relaxation of Caloris may have occurred if the floor is underlain by crust at least 20 km thick. We discuss future observations by MESSENGER that should distinguish among these scenarios.

  3. Protein structure prediction using basin-hopping

    Science.gov (United States)

    Prentiss, Michael C.; Wales, David J.; Wolynes, Peter G.

    2008-06-01

    Associative memory Hamiltonian structure prediction potentials are not overly rugged, thereby suggesting their landscapes are like those of actual proteins. In the present contribution we show how basin-hopping global optimization can identify low-lying minima for the corresponding mildly frustrated energy landscapes. For small systems the basin-hopping algorithm succeeds in locating both lower minima and conformations closer to the experimental structure than does molecular dynamics with simulated annealing. For large systems the efficiency of basin-hopping decreases for our initial implementation, where the steps consist of random perturbations to the Cartesian coordinates. We implemented umbrella sampling using basin-hopping to further confirm when the global minima are reached. We have also improved the energy surface by employing bioinformatic techniques for reducing the roughness or variance of the energy surface. Finally, the basin-hopping calculations have guided improvements in the excluded volume of the Hamiltonian, producing better structures. These results suggest a novel and transferable optimization scheme for future energy function development.

  4. Satellite altimetry over large hydrological basins

    Science.gov (United States)

    Calmant, Stephane

    2015-04-01

    The use of satellite altimetry for hydrological applications, either it is basin management or hydrological modeling really started with the 21st century. Before, during two decades, the efforts were concentrated on the data processing until a precision of a few decimeters could be achieved. Today, several web sites distribute hundreds of series spread over hundeds of rivers runing in the major basins of the world. Among these, the Amazon basin has been the most widely studied. Satellite altimetry is now routinely used in this transboundary basin to predict discharges ranging over 4 orders of magnitude. In a few years, satellite altimetry should evolve dramatically. This year, we should see the launchs of Jason-3 and that of Sentinel-3A operating in SAR mode. With SAR, the accuracy and resolution of a growing number of measurements should be improved. In 2020, SWOT will provide a full coverage that will join in a unique framework all the previous and forthcoming missions. These technical and thematical evolutions will be illustrated by examples taken in the Amazon and Congo basin.

  5. Performance analysis of double basin solar still with evacuated tubes

    International Nuclear Information System (INIS)

    Hitesh N Panchal; Shah, P. K.

    2013-01-01

    Solar still is a very simple device, which is used for solar distillation process. In this research work, double basin solar still is made from locally available materials. Double basin solar still is made in such a way that, outer basin is exposed to sun and lower side of inner basin is directly connected with evacuated tubes to increase distillate output and reducing heat losses of a solar still. The overall size of the lower basin is about 1006 mm x 325 mm x 380 mm, the outer basin is about 1006 mm x 536 mm x 100 mm Black granite gravel is used to increase distillate output by reducing quantity of brackish or saline water in the both basins. Several experiments have conducted to determine the performance of a solar still in climate conditions of Mehsana (latitude of 23 degree 59' and longitude of 72 degree 38'), Gujarat, like a double basin solar still alone, double basin solar still with different size black granite gravel, double basin solar still with evacuated tubes and double basin solar still with evacuated tubes and different size black granite gravel. Experimental results show that, connecting evacuated tubes with the lower side of the inner basin increases daily distillate output of 56% and is increased by 60%, 63% and 67% with average 10 mm, 20 mm and 30 mm size black granite gravel. Economic analysis of present double basin solar still is 195 days. (authors)

  6. Properties petrophysics of formation Jandaira: portion west of Potiguar Basin; Propriedades petrofisicas da formacao Jandaira: porcao oeste da Bacia Potiguar

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Isabelle T.; Vieira, Marcela M.; Bezerra, Francisco H.R. [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil)

    2008-07-01

    The focus of this study are the carbonate rocks of Jandaira Formation (Cenomanian-Campanian), located in the northeastern Brazil, enclosing, almost in its totality, the Rio Grande do Norte State and a small portion of the Ceara State. The research consisted of field work, petrographic description and petrophysical analysis of samples from surface and subsurface. The objective was to characterize and quantify the porosity and the permeability of this formation. In the qualitative analysis, the types of pores were classified; in the quantitative one, the porosity values were obtained through petrophysical essays and point counting in thin-sections. The samples from subsurface present porosity values less than 10% and permeability values between 0.01 and 0,47 mD. The samples from outcrops present minimum porosity of 0,6%, arriving up to 19.2%, and permeability between 0.0 and 1370,11 mD. In subsurface, the porosity values are higher in comparison with the permeability ones, inferring that, although there is good percentage of pores, they are isolated. In surface, the pores are normally interconnected, resulting in higher values of permeability. This is due to the more intense dissolution processes that rocks under these condition suffer; this fact is observed not only in the field, but in thin-sections, as well. (author)

  7. Injectivity decline prediction for Campos Basin reservoirs; Previsao da perda de injetividade para reservatorios da Bacia de Campos

    Energy Technology Data Exchange (ETDEWEB)

    Santos, Adriano dos [Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN (Brazil); Bedrikovetsky, Pavel [Universidade Estadual do Norte Fluminense (UENF), Campos dos Goytacazes, RJ (Brazil); Furtado, Claudio J.A. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES)

    2008-07-01

    A simulator for prediction of injectivity decline in perforated water injection wells is presented. The model parameters (filtration and formation damage coefficients) were determined from history data fitting, allowing injectivity decline prediction for various perforated water injectors. The injectivity model, considering both internal and external filtration, fitted the history data very well and allowed a comprehensive analysis of injectivity decline. The simulations revealed that, after the perforations filling, the injectivity decline rate becomes much more intensive. Therefore, the time necessary for perforations filling is an important variable on work over planning. (author)

  8. Compaction and sedimentary basin analysis on Mars

    Science.gov (United States)

    Gabasova, Leila R.; Kite, Edwin S.

    2018-03-01

    Many of the sedimentary basins of Mars show patterns of faults and off-horizontal layers that, if correctly understood, could serve as a key to basin history. Sediment compaction is a possible cause of these patterns. We quantified the possible role of differential sediment compaction for two Martian sedimentary basins: the sediment fill of Gunjur crater (which shows concentric graben), and the sediment fill of Gale crater (which shows outward-dipping layers). We assume that basement topography for these craters is similar to the present-day topography of complex craters that lack sediment infill. For Gunjur, we find that differential compaction produces maximum strains consistent with the locations of observed graben. For Gale, we were able to approximately reproduce the observed layer orientations measured from orbiter image-based digital terrain models, but only with a >3 km-thick donut-shaped past overburden. It is not immediately obvious what geologic processes could produce this shape.

  9. Configuration Management Plan for K Basins

    International Nuclear Information System (INIS)

    Weir, W.R.; Laney, T.

    1995-01-01

    This plan describes a configuration management program for K Basins that establishes the systems, processes, and responsibilities necessary for implementation. The K Basins configuration management plan provides the methodology to establish, upgrade, reconstitute, and maintain the technical consistency among the requirements, physical configuration, and documentation. The technical consistency afforded by this plan ensures accurate technical information necessary to achieve the mission objectives that provide for the safe, economic, and environmentally sound management of K Basins and the stored material. The configuration management program architecture presented in this plan is based on the functional model established in the DOE Standard, DOE-STD-1073-93, open-quotes Guide for Operational Configuration Management Programclose quotes

  10. Acid/Caustic Basins: Environmental information document

    International Nuclear Information System (INIS)

    Ward, J.W.; Johnson, W.F.; Marine, I.W.

    1986-12-01

    There are six Acid/Caustic Basins at SRP, all of which are located in the reactor and separations areas. These basins are unlined earthen depressions with nominal dimensions of 15.2 m in length x 15.2 m in width x 2.1 m in depth. They were used to provide mixing and partial neutralization of dilute sulfuric acid and sodium hydroxide solutions from water treatment facilities before these solutions were discharged to tributaries of local streams. Closure options considered for the Acid/Caustic Basins are waste removal and closure, no waste removal and closure, and no action. The predominant pathways for human exposure to chemical contaminants are through surface, subsurface, and atmospheric transport. Modeling calculations were made to determine the risks to human population via general pathways for the three postulated closure options. A cost estimate for each closure was also made

  11. Configuration management compliance matrix for K Basins

    International Nuclear Information System (INIS)

    Laney, T.

    1995-01-01

    This compliance matrix identifies the criteria of the configuration management program at K Basins and identifies the current methods, i.e., systems, processes, procedures, and programs, that implement the configuration management criteria. The matrix identifies the current K Basins implementing methods established through an initial assessment. This initial assessment of the implementation is reflected in the compliance matrix and forms the basis for subsequent detailed evaluations to ensure that the identified implementation methods adequately support the configuration management program. Specific objectives of this matrix include: Identifying functional elements (criteria) of configuration management and K Basins implementation of these criteria; Assessing the conformance of the implementation and providing resolution for discrepancies; Recommending corrective actions or improvements for discrepant conditions; Providing a tracking database to status the discrepancy resolutions; and Identifying estimated schedules and resources for implementing discrepancy resolutions

  12. Engineering assessment of 105 K basin monorails

    International Nuclear Information System (INIS)

    Frier, W.A.

    1995-01-01

    The engineering assessment of the 105 K Basins monorails was performed to provide the engineering analysis to justify the existing basin north-south monorail capacity. The existing monorails have a capacity of 2400 lbs posted on the north-south monorails. The engineering assessment concluded that the monorail, hanger system, and trolleys all rate for a 2000 lb capacity. Based upon a 2,500 lb trolley load, the monorails, the hanger system, and the double trolley hoist system will rate for 2,500 lbs. The single trolley hoist system for handling the fuel canisters and the trolley systems used in the various transfer areas are limited by manufacturers to 2,000 lbs. Therefore, it is concluded from this engineering assessment that the 2,400 lb capacity posting for the north-south basin monorails is appropriate

  13. Water security evaluation in Yellow River basin

    Science.gov (United States)

    Jiang, Guiqin; He, Liyuan; Jing, Juan

    2018-03-01

    Water security is an important basis for making water security protection strategy, which concerns regional economic and social sustainable development. In this paper, watershed water security evaluation index system including 3 levels of 5 criterion layers (water resources security, water ecological security and water environment security, water disasters prevention and control security and social economic security) and 24 indicators were constructed. The entropy weight method was used to determine the weights of the indexes in the system. The water security index of 2000, 2005, 2010 and 2015 in Yellow River basin were calculated by linear weighting method based on the relative data. Results show that the water security conditions continue to improve in Yellow River basin but still in a basic security state. There is still a long way to enhance the water security in Yellow River basin, especially the water prevention and control security, the water ecological security and water environment security need to be promoted vigorously.

  14. Acoustic thermometry of the western Mediterranean basin

    Science.gov (United States)

    Skarsoulis, E. K.; Send, U.; Piperakis, G.; Testor, P.

    2004-08-01

    Ocean acoustic tomography is used to obtain heat-content estimates for the western Mediterranean basin. Travel-time data from 13 tomography sections of the Thetis-2 experiment (January-October 1994) are analyzed with a matched-peak inversion approach. The underlying analysis involves the use of peak arrivals and nonlinear model relations between travel-time and sound-speed variations. Slice inversion results are combined with temperature covariance functions for the western Mediterranean to obtain heat-content estimates for the basin. These estimates compare favorably with ECMWF data over the nine-month period of the Thetis-2 experiment. Furthermore, estimates for the basin-average temperature of the western Mediterranean deep water are obtained.

  15. Spatial Preference Heterogeneity for Integrated River Basin Management: The Case of the Shiyang River Basin, China

    Directory of Open Access Journals (Sweden)

    Fanus Asefaw Aregay

    2016-09-01

    Full Text Available Integrated river basin management (IRBM programs have been launched in most parts of China to ease escalating environmental degradation. Meanwhile, little is known about the benefits from and the support for these programs. This paper presents a case study of the preference heterogeneity for IRBM in the Shiyang River Basin, China, as measured by the Willingness to Pay (WTP, for a set of major restoration attributes. A discrete choice analysis of relevant restoration attributes was conducted. The results based on a sample of 1012 households in the whole basin show that, on average, there is significant support for integrated ecological restoration as indicated by significant WTP for all ecological attributes. However, residential location induced preference heterogeneities are prevalent. Generally, compared to upper-basin residents, middle sub-basin residents have lower mean WTP while lower sub-basin residents express higher mean WTP. The disparity in utility is partially explained by the difference in ecological and socio-economic status of the residents. In conclusion, estimating welfare benefit of IRBM projects based on sample responses from a specific sub-section of the basin only may either understate or overstate the welfare estimate.

  16. da Zehirlenmeleri

    Directory of Open Access Journals (Sweden)

    Necati Akbulut

    2015-02-01

    Full Text Available Gıda Teknolojisinin gelişmesi ile, gıda maddesinin tüketici için daha alımlı olmasını sağlamak, kısa zamanda bozulmasını engellemek ve pazara yeni çeşitler sunmak için bazı kimyasal maddeler kullanılmaya başlanılmıştır. Bunun yanında tarımda kullanılan kimyasal maddeler artmış, ambalaj sanayi gelişmiş, bu dada maddelerine bulaşan maddelerin türlerini arttırmıştır. Ayrıca gıda maddelerine belirli amacı olmadan katılan maddelerde vardır. Diğer taraftan tüketiciyi aldatmak, hile yapmak, çok kar sağlamak veya kötü kaliteyi gizlemek amacı ile de kullanılan maddeler bulunmaktadır. İster teknik zorunluk, ister hile amacıyla olsun bu tür yabancı maddeler öncelikle insan sağlığını ilgilendirmektedir. Bazı maddelerin vücuda alınması sakıncasız olduğu halde, bazıları sakıncalıdır. Sakıncasız olanlarında belirli bir sınırın üzerinde uzun süre alınmaları zararlı olabilmektedir. Bu toplum sağlığı sorunu birçok ülkeyi gıda sanayiinde kullanılan kimyasal maddelerin hoşgörü sınırlarının hesaplanması noktasına götürmüştür.

  17. Great Basin geologic framework and uranium favorability

    International Nuclear Information System (INIS)

    Larson, L.T.; Beal, L.H.

    1978-01-01

    Work on this report has been done by a team of seven investigators assisted over the project span by twenty-three undergraduate and graduate students from May 18, 1976 to August 19, 1977. The report is presented in one volume of text, one volume or Folio of Maps, and two volumes of bibliography. The bibliography contains approximately 5300 references on geologic subjects pertinent to the search for uranium in the Great Basin. Volume I of the bibliography lists articles by author alphabetically and Volume II cross-indexes these articles by location and key word. Chapters I through IV of the Text volume and accompanying Folio Map Sets 1, 2, 3, 4, and 5, discuss the relationship of uranium to rock and structural environments which dominate the Great Basin. Chapter 5 and Map Sets 6 and 7 provide a geochemical association/metallogenic grouping of mineral occurrences in the Great Basin along with information on rock types hosting uranium. Chapter VI summarizes the results of a court house claim record search for 'new' claiming areas for uranium, and Chapter VII along with Folio Map Set 8 gives all published geochronological data available through April 1, 1977 on rocks of the Great Basin. Chapter VIII provides an introduction to a computer analysis of characteristics of certain major uranium deposits in crystalline rocks (worldwide) and is offered as a suggestion of what might be done with uranium in all geologic environments. We believe such analysis will assist materially in constructing exploration models. Chapter IX summarizes criteria used and conclusions reached as to the favorability of uranium environments which we believe to exist in the Great Basin and concludes with recommendations for both exploration and future research. A general summary conclusion is that there are several geologic environments within the Great Basin which have considerable potential and that few, if any, have been sufficiently tested

  18. Hydrogeology of the West Siberian Basin

    International Nuclear Information System (INIS)

    Foley, M.G.; Bradley, D.J.; Cole, C.R.

    1996-01-01

    Nuclear fuel cycle activities of the former Soviet Union (FSU) have resulted in extensive radioactive contaminant releases to the environment in western Siberia. We are developing three-dimensional numerical models of the hydrogeology and potential contaminant migration in the West Siberian Basin. We have assumed that ground-water flow in the West Siberian Basin is topographically driven, with recharge to the basin occurring in the highlands on the west, east, and south, and internal discharge localized in numerous river valleys and lakes that ultimately discharge north to the ocean. We are modeling the regional hydrogeology as three-dimensional, steady-state, saturated flow that is recharged from above. We acquired topographic, geologic, hydrostratigraphic, hydrogeologic, and water-balance data for the West Siberian Basin and constructed a regional water table. We correlated and combined 70 different rock types derived from published descriptions of West Siberian Basin rocks into 17 rock types appropriate for assignment of hydrogeologic properties on the basis of spatial heterogeneity and constituent (i.e., sand, silt, and clay) diversity. Examination of resulting three-dimensional assemblages of rock types showed that they were consistent with published and inferred paleogeography and depositional processes. Calibrating the basin's moisture balance (i.e., recharge and discharge) to the derived water table determined plausible input parameter values for unknowns such as hydraulic conductivities. The general directions of calculated ground-water flow suggest that major rivers act as discharge areas, with upwelling below the rivers extending down into the basement rocks, and that ground-water divides that penetrate the entire thickness of the model are evident between major rivers

  19. Paleohydrogeology of the San Joaquin basin, California

    Science.gov (United States)

    Wilson, A.M.; Garven, G.; Boles, J.R.

    1999-01-01

    Mass transport can have a significant effect on chemical diagenetic processes in sedimentary basins. This paper presents results from the first part of a study that was designed to explore the role of an evolving hydrodynamic system in driving mass transport and chemical diagenesis, using the San Joaquin basin of California as a field area. We use coupled hydrogeologic models to establish the paleohydrogeology, thermal history, and behavior of nonreactive solutes in the basin. These models rely on extensive geological information and account for variable-density fluid flow, heat transport, solute transport, tectonic uplift, sediment compaction, and clay dehydration. In our numerical simulations, tectonic uplift and ocean regression led to large-scale changes in fluid flow and composition by strengthening topography-driven fluid flow and allowing deep influx of fresh ground water in the San Joaquin basin. Sediment compaction due to rapid deposition created moderate overpressures, leading to upward flow from depth. The unusual distribution of salinity in the basin reflects influx of fresh ground water to depths of as much as 2 km and dilution of saline fluids by dehydration reactions at depths greater than ???2.5 km. Simulations projecting the future salinity of the basin show marine salinities persisting for more than 10 m.y. after ocean regression. Results also show a change from topography-to compaction-driven flow in the Stevens Sandstone at ca. 5 Ma that coincides with an observed change in the diagenetic sequence. Results of this investigation provide a framework for future hydrologic research exploring the link between fluid flow and diagenesis.

  20. Avian cholera in Nebraska's Rainwater Basin

    Science.gov (United States)

    Windingstad, R.M.; Hurt, J.J.; Trout, A.K.; Cary, J.

    1984-01-01

    The first report of avian cholera in North America occurred in northwestern Texas in winter 1944 (Quortrup et al. 1946). In 1975, mortality from avian cholera occurred for the first time in waterfowl in the Rainwater Basin of Nebraska when an estimated 25,000 birds died (Zinkl et al. 1977). Avian cholera has continued to cause mortality in wild birds in specific areas of the Basin each spring since. Losses of waterfowl from avian cholera continue to be much greater in some of the wetlands in the western part of the Basin than in the east. Several wetlands in the west have consistently higher mortality and are most often the wetlands where initial mortality is noticed each spring (Figure 1). The establishment of this disease in Nebraska is of considerable concern because of the importance of the Rainwater Basin as a spring staging area for waterfowl migrating to their breeding grounds. The wetlands in this area are on a major migration route used by an estimated 5 to 9 million ducks and several hundred thousand geese. A large portion of the western mid-continental greater white-fronted goose (Anser albifrons) population stage in the Basin each spring. Occasionally, whooping cranes (Grus americana) use these wetlands during migration, and lesser sandhill cranes (Grus canadensis) staging on the nearby Platte River sometimes use wetlands where avian cholera occurs (Anonymous 1981). Our objectives were to determine whether certain water quality variables in the Rainwater Basin differed between areas of high and low avian cholera incidence. These results would then be used for laboratory studies involving the survivability of Pasteurella multocida, the causative bacterium of avian cholera. Those studies will be reported elsewhere.

  1. Ground Motion Prediction Atop Geometrically Complex Sedimentary Basins - The Dead Sea Basin

    Science.gov (United States)

    Shani-Kadmiel, S.; Tsesarsky, M.; Louie, J. N.; Gvirtzman, Z.

    2014-12-01

    The Dead Sea Transform (DST) is the source for some of the largest earthquakes in the eastern Mediterranean. Several deep and structurally complex sedimentary basins are associated with the DST. These basins are up to 10 km deep and typically bounded by active fault zones. The low seismicity of the DST combined with the limited instrumental coverage of the seismic network in the area result in a critical knowledge gap. Therefore, it is necessary to complement the limited instrumental data with synthetic data based on computational modeling, in order to study the effects of earthquake ground motion in these sedimentary basins. We performed a 2D ground-motion analysis in the Dead Sea Basin (DSB) using a finite-difference code. Results indicate a complex pattern of ground motion amplification affected by the geometric features in the basin. To distinguish between the individual contributions of each geometrical feature in the basin, we developed a semiquantitative decomposition approach. This approach enabled us to interpret the DSB results as follows: (1) Ground-motion amplification as a result of resonance occurs basin-wide due to a high impedance contrast at the base of the uppermost layer; (2) Steep faults generate a strong edge-effect that further ampli- fies ground motions; (3) Sub-basins cause geometrical focusing that may significantly amplify ground motions; and (4) Salt diapirs diverge seismic energy and cause a de- crease in ground-motion amplitude. We address the significance of ground motion amplification due to geometrical focusing via an analytical and numerical study. We show that effective geometrical focusing occurs for a narrow set of eccentricities and velocity ratios, where seismic energy is converged to a region of ±0.5 km from surface. This mechanism leads to significant ground motion amplification at the center of the basin, up to a factor of 3; frequencies of the modeled spectrum are amplified up to the corner frequency of the source.

  2. Megafans of the Northern Kalahari Basin

    Science.gov (United States)

    Wilkinson, M. J.; Miller, R. McG.; Eckardt, F.; Kreslavsky, M. A.

    2016-01-01

    We identify eleven megafans (partial cones of fluvial sediment, >80 km radius) in the northern Kalahari Basin, using several criteria based on VIS and IR remotely sensed data and SRTM-based surface morphology reconstructions. Two other features meet fewer criteria of the form which we class as possible megafans. The northern Kalahari megafans are located in a 1700 km arc around the southern and eastern flanks of the Angola's Bié Plateau, from northern Namibia through northwest Botswana to western Zambia. Three lie in the Owambo subbasin centered on the Etosha Pan, three in the relatively small Okavango rift depression, and five in the Upper Zambezi basin. The population includes the well-known Okavango megafan (150 km), Namibia's Cubango megafan, the largest megafan in the region (350 km long), and the largest nested group (the five major contiguous megafans on the west slopes of the upper Zambezi Valley). We use new, SRTM-based topographic roughness data to discriminate various depositional surfaces within the flat N. Kalahari landscapes. We introduce the concepts of divide megafans, derived megafans, and fan-margin rivers. Conclusions. (i) Eleven megafan cones total an area of 190,000 sq km. (ii) Different controls on megafan size operate in the three component basins: in the Okavango rift structural controls become the prime constraint on megafan length by controlling basin dimensions. Megafans in the other les constricted basins appear to conform to classic relationships fan area, slope, and feeder-basin area. (iii) Active fans occupy the Okavango rift depression with one in the Owambo basin. The rest of the population are relict but recently active fans (surfaces are relict with respect to activity by the feeder river). (iv) Avulsive behavior of the formative river-axiomatic for the evolution of megafans-has resulted in repeated rearrangements of regional drainage, with likely effects in the study area well back into the Neogene. Divide megafans comprise the

  3. Ferromanganese nodules from the Central Indian Ocean Basin

    Digital Repository Service at National Institute of Oceanography (India)

    Jauhari, P.; Pattan, J.N.

    In order to delineate a mine site for ferromanganese nodules, extensive surveys were conducted in Central Indian Ocean Basin. Mapping of the basin by multibeam swath bathymetry (Hydrosweep) has revealed many new bottom relief features...

  4. Basin and Range Province, Western US, USGS Grids #4

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These grid files were used to produce gravity and basin depth maps of the Basin and Range Province, western United States. The maps show gravity values and modeled...

  5. Basin and Range Province, Western US, USGS Grids, #1

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These grid files were used to produce gravity and basin depth maps of the Basin and Range Province, western United States. The maps show gravity values and modeled...

  6. Hydrologic Sub-basins of Greenland, Version 1

    Data.gov (United States)

    National Aeronautics and Space Administration — The Hydrologic Sub-basins of Greenland data set contains Geographic Information System (GIS) polygon shapefiles that include 293 hydrologic sub-basins of the...

  7. Valor da biodiversidade

    OpenAIRE

    Alho, CJR.

    2008-01-01

    Além do valor intrínseco da biodiversidade (a natureza funcionando como ela é; as espécies são o produto de longa história evolutiva continuada por meio de processos ecológicos e, desse modo, têm também direito à vida), a biodiversidade também desempenha papel fundamental como serviços do ecossistema, na manutenção de processos ecológicos. O valor econômico ou utilitário da biodiversidade se apóia na dependência do homem sobre a biodiversidade, produtos que a natureza supre: madeira, fibras, ...

  8. A REFORMA DA IGREJA

    Directory of Open Access Journals (Sweden)

    Vítor Galdino Feller

    2014-01-01

    Full Text Available O pontificado do papa Francisco trouxe à tona o tema da reforma da Igreja. Retoma-se essa causa que acompanha a história da Igreja desde os seus primórdios e que interessa a todos os membros do povo santo de Deus. O texto divide-se em quatro partes. Primeiro, faz-se um apanhado histórico dos anseios de reforma da Igreja, mostrando que, muitas vezes em instâncias subterrâneas, sempre houve o desejo e também ações concretas de renovação. Em seguida, apresenta-se como razão para a reforma da Igreja o anúncio e a realização do Reino de Deus, pelo qual é preciso que a Igreja se volte à concretude humana e histórica de Jesus de Nazaré, pela superação do apego ao poder e às estruturas religiosas. Num terceiro momento, trata-se do critério pelo qual se mede a realização e a veracidade da reforma da Igreja: a santidade de cada fiel e do povo cristão no meio do mundo. Por fim, conclui-se que o caminho para a reforma da Igreja está na escuta dos clamores do Espírito Santo, que fala na própria Igreja e no mundo através do sensus fidei dos fiéis, das Igrejas particulares, dos pobres, das mulheres e das realidades terrestres. ABSTRACT: The pontificate of Pope Francis brought to the surface the theme of reform of the Church. This essay takes up this cause that accompanies the history of the Church from its beginnings and concerns all the members of the holy people of God. The text is divided into four parts. First, it gives a historical summary of the yearnings for reform of the Church, showing that, in many instances subterranean, there has always been the desire and also the concrete actions of renewal. Following from this, the essay presents as the reason for the reform of the Church the proclamation and the realization of the Kingdom of God, whereby it is necessary that the Church return to the concrete human and historical Jesus of Nazareth, in order to overcome the addiction to power and to religious structures. In the

  9. O Tema da Cidadania

    Directory of Open Access Journals (Sweden)

    Adriano Moreira

    2009-11-01

    Full Text Available Neste artigo tentaremos evidenciar a natureza pelo menos tripartida da cidadania que responde ao incontroladoglobalismo: uma que se confunde com os direitos humanos, exigentes querem seja o Estado o seu interlocutor,quer não exista tal interlocutor; outra que se insere na fenomenologia dos grandes espaços em formação, de que aUnião Europeia é exemplo, e a que o projecto da Constituição Europeia, agora em recolhimento de meditação, jáoferece o apoio de uma definição específica de direitos; e finalmente, a cidadania que diz respeito à relação com oEstado soberano em crise de redefinição, sobretudo, pelo que nos interessa, no espaço europeu.

  10. Fisiopatologia da enxaqueca

    Directory of Open Access Journals (Sweden)

    VINCENT MAURICE B.

    1998-01-01

    Full Text Available A fisiopatologia da enxaqueca ainda não foi completamente elucidada. As principais estruturas envolvidas parecem ser o sistema nervoso central (córtex e tronco cerebral, o sistema trigeminovascular e os vasos correspondentes, outras fibras autonômicas que inervam estes vasos, e os vários agentes vasoativos locais, como a SP, CGRP, NO, VIP, NPY, ACh, NA, NKA, entre outros. A depressão alastrante é o fenômeno neurológico que provavelmente justifica achados experimenais e clínicos na enxaqueca. Ela tem velocidade de propagação semelhante à aura, ativa o núcleo espinhal do trigêmeo e está relacionada à liberação de CGRP e NO. Alterações circulatórias detectadas por métodos complementares reforçam o papel da depressão alastrante. A identificação de anormalidades em pelo menos três loci (cromossomas 19 e 1 na enxaqueca hemiplégica familiar ocorreu recentemente. Elas estão relacionadas a anormalidades nos canais de cálcio voltagem dependentes tipo P/Q, específicos do sistema nervoso central, que regulam a liberação de vários neurotransmissores, incluindo possivelmente a serotonina. A exemplo de outras anormalidades neurológicas paroxísticas que resultam da hiperexcitabilidade da membrana plasmática, é possível que a enxaqueca ocorra devido a uma desordem de canais iônicos.

  11. Western Gas Sands Project. Quarterly basin activities report

    Energy Technology Data Exchange (ETDEWEB)

    1978-10-31

    This quarterly basin activities report is a summation of three months drilling and testing activities in the primary study areas of the WGSP; these include the Greater Green River Basin, the Northern Great Plains Province, the Piceance Basin, and the Uinta Basin. Additional low permeability sandstone areas are listed and located geographically. Activities in each primary study area are summarized under core program and dilling activity. (JRD)

  12. Hepatotoxicidade da cianotoxina microcistina

    Directory of Open Access Journals (Sweden)

    Andréa de Castro Leal

    2004-01-01

    Full Text Available Constitui interesse emergente em saúde pública avaliar a possibilidade de intoxicação humana por biotoxinas de algas cianofíceas, principalmente as hepatotoxinas do grupo das microcistinas. A microcistina, um heptapeptídeo monocíclico, é produzida principalmente pela cianobactéria Microcistis aeruginosa. São caracterizadas por alguns aminoácidos variáveis, dois deles com uma estrutura não usual que possuem importante papel na hepatotoxidade da microcistina. Apesar do acometimento humano atribuído as microcistinas incluírem gastroenterite, reações alérgicas ou irritativas, neurotoxicidade, o principal alvo da toxina é o fígado. Nos hepatócitos as microcistinas são carreadas pelo sistema transportador do ácido biliar, inibindo a atividade da proteína fosfatase no citoplasma. A inibição leva a mudanças morfológicas na membrana plasmática pela hiperfosforilação de citoqueratinas, e à atividade de promoção tumoral pelas proteínas hiperfosforiladas. Os métodos de detecção e quantificação de microcistinas no ambiente incluem a cromatografia líquida, o bioensaio em camundongos e os testes imunoenzimáticos. O último vem ganhando destaque pela praticidade e alta sensibilidade.

  13. Cartografia imaginada da Mangueira

    Directory of Open Access Journals (Sweden)

    Carmen Opipari

    2013-08-01

    Full Text Available Propomos nesse artigo percorrer os meandros da pesquisa de campo que realizamos, na cidade do Rio de Janeiro, com crianças moradoras do morro da Mangueira e integrantes de sua Escola de Samba. Focamos os desdobramentos teóricos forjados na elaboração coletiva de uma metodologia de pesquisa na qual, tendo a imagem como suporte e objeto de reflexão, deixamo-nos guiar pelos percursos que fizemos com algumas dessas crianças na montagem de dispositivos (desenhos, histórias e vídeo que permitiram traçar uma cartografia imaginada da Mangueira. Aprendizes de cartógrafos, seguimos as crianças, nossos guias, no labirinto de seu morro, deixamo-nos afetar pela intensidade de uma cor, a fragilidade de uma palavra, a poesia de uma história, compomos com eles um caleidoscópio, sempre precário, prestes a balançar na direção de outras imagens.

  14. Hydrology of the Johnson Creek Basin, Oregon

    Science.gov (United States)

    Lee, Karl K.; Snyder, Daniel T.

    2009-01-01

    The Johnson Creek basin is an important resource in the Portland, Oregon, metropolitan area. Johnson Creek forms a wildlife and recreational corridor through densely populated areas of the cities of Milwaukie, Portland, and Gresham, and rural and agricultural areas of Multnomah and Clackamas Counties. The basin has changed as a result of agricultural and urban development, stream channelization, and construction of roads, drains, and other features characteristic of human occupation. Flooding of Johnson Creek is a concern for the public and for water management officials. The interaction of the groundwater and surface-water systems in the Johnson Creek basin also is important. The occurrence of flooding from high groundwater discharge and from a rising water table prompted this study. As the Portland metropolitan area continues to grow, human-induced effects on streams in the Johnson Creek basin will continue. This report provides information on the groundwater and surface-water systems over a range of hydrologic conditions, as well as the interaction these of systems, and will aid in management of water resources in the area. High and low flows of Crystal Springs Creek, a tributary to Johnson Creek, were explained by streamflow and groundwater levels collected for this study, and results from previous studies. High flows of Crystal Springs Creek began in summer 1996, and did not diminish until 2000. Low streamflow of Crystal Springs Creek occurred in 2005. Flow of Crystal Springs Creek related to water-level fluctuations in a nearby well, enabling prediction of streamflow based on groundwater level. Holgate Lake is an ephemeral lake in Southeast Portland that has inundated residential areas several times since the 1940s. The water-surface elevation of the lake closely tracked the elevation of the water table in a nearby well, indicating that the occurrence of the lake is an expression of the water table. Antecedent conditions of the groundwater level and autumn

  15. Da natureza da computação à computação da natureza

    OpenAIRE

    Fiolhais, Carlos

    1992-01-01

    Referência bibliográfica: FIOLHAIS, Carlos – Da natureza da computação à computação da natureza. In TEODORO, Vítor Duarte, org. ; FREITAS, João Correia de, org. – Educação e computadores. 1.ª ed. Lisboa : Ministério da Educação, Gabinete de Estudos e Planeamento, 1992. (Desenvolvimento dos Sistemas Educativos). ISBN 9726142016. p. 189-196. "O computador conquistou por direito próprio um lugar na sociedade moderna. Encontra-se por todo o lado, nas mais diversas facetas da actividade humana....

  16. A utilização da teoria da aprendizagem significativa no ensino da Enfermagem

    OpenAIRE

    Alana Tamar Oliveira de Sousa; Nilton Soares Formiga; Simone Helena dos Santos Oliveira; Marta Miriam Lopes Costa; Maria Júlia Guimarães Oliveira Soares

    2015-01-01

    RESUMO Objetivo: sintetizar a produção científica acerca da Teoria da Aprendizagem Significativa no processo de ensino-aprendizagem em Enfermagem. Método: revisão integrativa realizada nas bases de dados MEDLINE, LILACS, SciELO, BDENF e CINAHL, com artigos que abordaram a temática ou aspectos da teoria da aprendizagem significativa de David Ausubel. Fizeram parte da amostra dez artigos, sendo seis escritos no idioma português e quatro no inglês, publicados de 1998 a 2013. Resultados: cinco...

  17. 48 CFR 25.405 - Caribbean Basin Trade Initiative.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 1 2010-10-01 2010-10-01 false Caribbean Basin Trade... SOCIOECONOMIC PROGRAMS FOREIGN ACQUISITION Trade Agreements 25.405 Caribbean Basin Trade Initiative. Under the Caribbean Basin Trade Initiative, the United States Trade Representative has determined that, for...

  18. 100KE/KW fuel storage basin surface volumetric factors

    International Nuclear Information System (INIS)

    Conn, K.R.

    1996-01-01

    This Supporting Document presents calculations of surface Volumetric factors for the 100KE and 100KW Fuel Storage Basins. These factors relate water level changes to basin loss or additions of water, or the equivalent water displacement volumes of objects added to or removed from the basin

  19. Temporal precipitation trend analysis at the Langat River Basin ...

    Indian Academy of Sciences (India)

    The Langat River Basin provides fresh water for about 1.2 million people in the Langat and Klang valleys. Any change in the pattern of rainfall could affect the quantity of water in the basin. Studying the pattern of change in rainfall is crucial for managing the available water resources in the basin. Thus, in this study, for the ...

  20. Monthly water balance model for Ndarugu basin, Kenya | Nyadawa ...

    African Journals Online (AJOL)

    ... model in Ndarugu river basin in Kenya. The model is slightly modified to suit hydrologic conditions in the basin. The study apart from establishing relevant model parameters has recommended optimum length of period for continuous simulation to reduce effect dynamic changes in the basin. Journal of Civil Engineering, ...

  1. 13 Morphometric Analysis of Ogunpa and Ogbere Drainage Basins ...

    African Journals Online (AJOL)

    `123456789jkl''''#

    The paper analysed the morphometric parameters of Ogbere and Ogunpa drainage basins located on basement complex rock in ... properties of Ogunpa drainage basin are likely to induce high magnitude flood compared to morphometric properties of Ogbere ..... Bs = VI/HE where Bs = Basin slope, VI = Vertical Interval and.

  2. Detailed bathymetric surveys in the central Indian Basin

    Digital Repository Service at National Institute of Oceanography (India)

    Kodagali, V.N.; KameshRaju, K.A.; Ramprasad, T.; George, P.; Jaisankar, S.

    Over 420,000 line kilometers of echo-sounding data was collected in the Central Indian Basin. This data was digitized, merged with navigation data and a detailed bathymetric map of the Basin was prepared. The Basin can be broadly classified...

  3. The Interior Columbia Basin Ecosystem Management Project: scientific assessment.

    Science.gov (United States)

    1999-01-01

    This CD-ROM contains digital versions (PDF) of the major scientific documents prepared for the Interior Columbia Basin Ecosystem Management Project (ICBEMP). "A Framework for Ecosystem Management in the Interior Columbia Basin and Portions of the Klamath and Great Basins" describes a general planning model for ecosystem management. The "Highlighted...

  4. Riddled Basins of Attraction for Synchronized Type-I Intermittency

    DEFF Research Database (Denmark)

    Mancher, Martin; Nordahn, Morten; Mosekilde, Erik

    1998-01-01

    Chaotic mortion resticted to an invariant subspace of total phase space may be associated with basins of attraction that are riddled with holes belonging to the basin of another limiting state. We study the emergence of such basins of two coupled one-dimensional maps, each exhibiting type-I inter...

  5. 75 FR 43915 - Basin Electric Power Cooperative: Deer Creek Station

    Science.gov (United States)

    2010-07-27

    ... DEPARTMENT OF AGRICULTURE Rural Utilities Service Basin Electric Power Cooperative: Deer Creek... purpose of the EIS was to evaluate the potential environmental impacts of and alternatives to Basin Electric Power Cooperative's (Basin Electric) application for a RUS loan and a Western interconnection...

  6. ESPIRITUALIDADES PLURAIS DA REFORMA

    Directory of Open Access Journals (Sweden)

    Cláudio Oliveira Ribeiro

    2017-01-01

    Full Text Available RESUMO: A pesquisa centrou-se na análise do percurso teológico da Reforma Protestante, enfatizando a pluralidade dela, as visões politicamente distintas entre seus protagonistas como Martinho Lutero, João Calvino e Thomas Müntzer, e as práticas e espiritualidades igualmente distintas até os dias de hoje. Metodologicamente, seguimos a noção da história como interpretação e o potencial criativo dos entre-lugares culturais, valorizando os aspectos utópicos que possam ser reforçados pela avaliação histórica. Os resultados da pesquisa destacaram alguns desses aspectos como: (i o valor teológico da dimensão ecumênica, (ii os processos de renovação eclesial, dentro e fora do contexto protestante, (iii a criação e o fortalecimento de vida comunitária e crítica, dentro dos parâmetros teológicos da Reforma. Eles devem ser analisados levando-se em consideração as peculiaridades do contexto brasileiro e latino-americano em geral em suas diferentes dimensões. ABSTRACT: The research focused on the analysis of the theological path of the Protestant Reformation, highlighting its plurality, the varied political views among its protagonists, such as Martin Luther, John Calvin and Thomas Müntzer, and the equally different practices and spiritualities of today. Methodologically we followed the notion of history as interpretation and the creative potential of the cultural in-between places, valuing the utopian aspects that might be reinforced by the historical evaluation. The research results highlighted some of these aspects, such as (i the theological value of the ecumenical dimension, (ii the processes of ecclesial renewal, inside and outside the Protestant context, and (iii the creation and strengthening of community life, within the theological parameters of the Reformation. They are to be analyzed taking into consideration the peculiarities of Brazilian and Latin American contexts in their varied dimensions.

  7. Basin Subsegments from LDEQ source data, Geographic NAD83, LOSCO (2004) [basin_subsegments_LDEQ_2004

    Data.gov (United States)

    Louisiana Geographic Information Center — This is a polygon data set of watershed basin subsegments for Louisiana. The dataset was developed for the LDEQ Office of Water Resources' watershed assessment and...

  8. Quantification and Postglacial evolution of an inner alpine sedimentary basin (Gradenmoos Basin, Hohe Tauern)

    International Nuclear Information System (INIS)

    Götz, J.

    2012-01-01

    The overall objective of this thesis is the quantification of sediment storage and the reconstruction of postglacial landscape evolution within the glacially overdeepened Gradenmoos Basin (subcatchment size: 4.1 km 2 ; basin floor elevation: 1920 m) in the central Gradenbach catchment (Schober Range, Hohe Tauern, Austrian Alps). Following the approach of denudation-accumulation-systems, most reliable results are obtained (1) if sediment output of a system can be neglected for an established period of time, (2) if sediment storage can be assessed with a high level of accuracy, (3) if the onset of sedimentation and amounts of initially stored sediments are known, and (4) if sediment contributing areas can be clearly delimited. Due to spatial scale and topographic characteristics, all mentioned aspects are fulfilled to a high degree within the studied basin. Applied methods include surface, subsurface and temporal investigations. Digital elevation data is derived from terrestrial laserscanning and geomorphologic mapping. The quantification of sediment storage is based on core drillings, geophysical methods (DC resistivity, refraction seismic, and ground penetrating radar), as well as GIS and 3D modelling. Radiocarbon dating and palynological analyses are additionally used to reconstruct the postglacial infilling progress of the basin. The study reveals that a continuous postglacial stratigraphic record is archived in the basin. As proposed by Lieb (1987) timing of basin deglaciation could be verified to late-Egesen times by means of radiocarbon ages (oldest sample just above basal till: 10.4 ka cal. BP) and first palynologic results. Lateglacial oscillations seem to have effectively scoured the basin, leaving only a shallow layer of basal till. The analysis of postglacial sedimentation in the basin is further improved by the existence of a former lake in the basin lasting for up to 7500 years until approx. 3.7 ka cal. BP. Both, the stratigraphic (fine, partly

  9. A Basin Approach to a Hydrological Service Delivery System in the Amur River Basin

    Directory of Open Access Journals (Sweden)

    Sergei Borsch

    2018-03-01

    Full Text Available This paper presents the basin approach to the design, development, and operation of a hydrological forecasting and early warning system in a large transboundary river basin of high flood potential, where accurate, reliable, and timely available daily water-level and reservoir-inflow forecasts are essential for water-related economic and social activities (the Amur River basin case study. Key aspects of basin-scale system planning and implementation are considered, from choosing efficient forecast models and techniques, to developing and operating data-management procedures, to disseminating operational forecasts using web-GIS. The latter, making the relevant forecast data available in real time (via Internet, visual, and well interpretable, serves as a good tool for raising awareness of possible floods in a large region with transport and industrial hubs located alongside the Amur River (Khabarovsk, Komsomolsk-on-Amur.

  10. Seasonal Streamflow Forecasts for African Basins

    Science.gov (United States)

    Serrat-Capdevila, A.; Valdes, J. B.; Wi, S.; Roy, T.; Roberts, J. B.; Robertson, F. R.; Demaria, E. M.

    2015-12-01

    Using high resolution downscaled seasonal meteorological forecasts we present the development and evaluation of seasonal hydrologic forecasts with Stakeholder Agencies for selected African basins. The meteorological forecasts are produced using the Bias Correction and Spatial Disaggregation (BCSD) methodology applied to NMME hindcasts (North American Multi-Model Ensemble prediction system) to generate a bootstrap resampling of plausible weather forecasts from historical observational data. This set of downscaled forecasts is then used to drive hydrologic models to produce a range of forecasts with uncertainty estimates suitable for water resources planning in African pilot basins (i.e. Upper Zambezi, Mara Basin). In an effort to characterize the utility of these forecasts, we will present an evaluation of these forecast ensembles over the pilot basins, and discuss insights as to their operational applicability by regional actors. Further, these forecasts will be contrasted with those from a standard Ensemble Streamflow Prediction (ESP) approach to seasonal forecasting. The case studies presented here have been developed in the setting of the NASA SERVIR Applied Sciences Team and within the broader context of operational seasonal forecasting in Africa. These efforts are part of a dialogue with relevant planning and management agencies and institutions in Africa, which are in turn exploring how to best use uncertain forecasts for decision making.

  11. Integrated studies of Azraq Basin in Jordan

    Science.gov (United States)

    Mohammed Shahbaz; B. Sunna

    2000-01-01

    Many historical indications of the eastern Mediterranean Basin exhibit climatic changes or alterations effecting the status of water resources, hence, effecting human-kind and the quality of life. It is essential to deeply understand the nature of climates and geological structures employing state of the art techniques to assess rainfall, runoff, and floods that...

  12. On the significance of ELF basins

    Indian Academy of Sciences (India)

    For perfectly localized orbitals, the basins of ELF are the domains in which the probability of finding a pair of electrons is maximal. Author Affiliations. Andreas Savin1. Laboratoire de Chimie Théorique, CNRS and Université Pierre et Marie Curie, 4, Place Jussieu, F-75252 Paris, France. Journal of Chemical Sciences.

  13. Raptors of the Izdrevaya River Basin, Russia

    Directory of Open Access Journals (Sweden)

    Elvira G. Nikolenko

    2017-05-01

    Full Text Available This article compiles the results of episodic visits of the aurhoes to the basin of the Izdrevaya river during 2012–2016. The main goals of those visits were: to figure out the species composition of nesting fauna of birds of prey, estabishing the manner of nesting pairs’ distribution and designing a system of nestboxes for different species of birds of prey and owls. 8 species of Falconiformes are present in the Izdrevaya river basin, 4 of which are nesting, and 3 species of Strigiformes, 2 of which are nesting. The Black Kite (Milvus migrans has maximum density in the Izdrevaya river basin – 51.83 ind./100km2 (n=93. The Common Buzzard (Buteo buteo is the second in number after the Black Kite, its density being 8.88 ind/100km2 of the total area. The Ural Owl (Strix uralensis, encountered only on two territories in 2012, inhabited 4 nestboxes in 2013 as the result of biotechnical measures taken, and its number increased to 8 pairs successfully breeding in the nextboxes in 2016. Main negative factors for birds of prey in the Izdrevaya river basin were established: electrocution on power lines, illegal logging, illegal construction of dams and the construction of waste-sorting plant with a range of solid municipal waste.

  14. Climatology of the interior Columbia River basin.

    Science.gov (United States)

    Sue A. Ferguson

    1999-01-01

    This work describes climate means and trends in each of three major ecological zones and 13 ecological reporting units in the interior Columbia River basin. Widely differing climates help define each major zone and reporting unit, the pattern of which is controlled by three competing air masses: marine, continental, and arctic. Paleoclimatic evidence and historical...

  15. Hydrogeophysical investigation of Southern Anambra Basin Nigeria ...

    African Journals Online (AJOL)

    The analytical relationship between the Dar Zarrouk parameters and the hydraulic characteristics were used to assess the hydrogeological condition of the basin. These have led to inferences about the aquifer hydraulic conductivities and transmissivities and K product across the area. Consequently favourable areas have ...

  16. Summary status of K Basins sludge characterization

    International Nuclear Information System (INIS)

    Baker, R.B.

    1995-01-01

    A number of activities are underway as part of the Spent Nuclear Fuels Project (SNFP) related to the processing and disposing of sludge in the 105-K Basins (K Basins). Efforts to rigorously define data requirements for these activities are being made using the Data Quality Objectives (DQO) process. Summaries of current sludge characterization data are required to both help support this DQO process and to allow continued progress with on-going engineering activities (e.g., evaluations of disposal alternatives). This document provides the status of K Basins sludge characterization data currently available to the Nuclear Fuel Evaluations group. This group is tasked by the SNFP to help develop and maintain the characterization baseline for the K Basins. The specific objectives of this document are to: (1) provide a current summary (and set of references) of sludge characterization data for use by SNFP initiatives, to avoid unnecessary duplication of effort and to support on-going initiatives; (2) submit these data to an open forum for review and comment, and identify additional sources of significant data that may be available; (3) provide a summary of current data to use as part of the basis to develop requirements for additional sludge characterization data through the DQO process; (4) provide an overview of the intended activities that will be used to develop and maintain the sludge characterization baseline

  17. 105-KE Basin Pilot Run design plan

    International Nuclear Information System (INIS)

    Sherrell, D.L.

    1994-01-01

    This document identifies all design deliverables and procedures applicable to the 105-KE Basin Pilot Run. It also establishes a general design strategy, defines interface control requirements, and covers planning for mechanical, electrical, instrument/control system, and equipment installation design

  18. Geological development of amazon and orinoco basins

    NARCIS (Netherlands)

    Wesselingh, F.P.; Hoorn, C.; Albert, J.S.; Reis, R.E.

    2011-01-01

    This chapter examines the geological development of the Orinoco and Amazon River basins. It analyzes the evolution of aquatic Amazonian ecosystems from the Late Cretaceous to the Quaternary period and provides and considers the potential impacts on the development of modern Amazonian fish faunas. It

  19. Robustness of river basin water quality models

    NARCIS (Netherlands)

    de Blois, Chris; Wind, H.G.; de Kok, Jean-Luc; Koppeschaar, K.

    2003-01-01

    In this paper the concept of robustness is introduced and applied to a model for the analysis of the impacts of spatially distributed policy measures on the surface water quality on a river basin scale. In this model the influence of precipitation on emissions and resuspension of pollutants in the

  20. Basins of Attraction for Chimera States

    DEFF Research Database (Denmark)

    Martens, Erik Andreas; Panaggio, Mark; Abrams, Daniel

    2016-01-01

    Chimera states---curious symmetry-broken states in systems of identical coupled oscillators---typically occur only for certain initial conditions. Here we analyze their basins of attraction in a simple system comprised of two populations. Using perturbative analysis and numerical simulation we...

  1. Tectonic inversion in the Wandel Sea Basin

    DEFF Research Database (Denmark)

    Svennevig, Kristian; Guarnieri, Pierpaolo; Stemmerik, Lars

    2016-01-01

    Sheet and an upper Hondal Elv Thrust Sheet separated by a subhorizontal fault: the Central Detachment. The style of deformation and the structures described are interpreted as the result of Paleocene-Eocene N-S directed compression resulting in basin inversion with strike-slip faults only having minor...

  2. Nodules of the Central Indian Ocean Basin

    Digital Repository Service at National Institute of Oceanography (India)

    Banakar, V.K.; Kodagali, V.N.

    The Central Indian Ocean Basin (CIOB) extends from 0 degree S to 25 degrees S latitudes and 70 degrees E to 90 degrees E longitudes The major portion of CIOB is an abyssal plain and the plains are believed to be developed by the Ganges Fan turbidity...

  3. Middle Rio Grande Basin Research Report 2008

    Science.gov (United States)

    Deborah M. Finch; Catherine Dold

    2008-01-01

    An ecosystem is rarely static. A natural system composed of plants, animals, and microorganisms interacting with an area's physical factors, an ecosystem is always fluctuating and evolving. But sometimes, often at the hands of humans, ecosystems change too much. Such is the case with many of the ecosystems of the Middle Rio Grande Basin of New Mexico.

  4. Rifte Guaritas basin compartmentation in Camaqua

    International Nuclear Information System (INIS)

    Preissler, A; Rolim, S; Philipp, R.

    2010-01-01

    The study contributes to the knowledge of the tectonic evolution of the Guaritas rift basin in Camaqua. Were used aero magnetic geophysical data for modeling the geometry and the depth of the structures and geological units. The research was supported in processing and interpretation of Aster images (EOS-Terra), which were extracted from geophysical models and digital image

  5. sedimentology, depositional environments and basin evolution

    African Journals Online (AJOL)

    Preferred Customer

    J. Sci., 27(1), 2004. 47. GEOLOGY OF THE STUDIED AREA. The geology of the Delbi-Moye Basin is described in relation to the regional Precambrian orogenic belt and the younger rift .... the South-western Ethiopian Plateau (Seife Michael. Berhe et al., 1987). .... The facies shows horizontal to gentle dipping (13°–25°) ...

  6. within the lake victoria basin, tanzania

    African Journals Online (AJOL)

    Victoria basin were determined in Kagera (Lake Burigt), in Mara (River Mara) and in Mwanza region (Lake Malimbe) during ... Appropriate pollution control measures should be taken though levels encountered are still within those recommended in the ... the basic cause of aquatic impacts from primitive subsistence ...

  7. within the volta basin system of ghana

    African Journals Online (AJOL)

    Sir Onassis

    guide all hydropower and irrigation projects. ... availability of water (flow) which is the basic input for any system we can develop for ... a basic and fundamental problem in Water resources planning and management. Model Calibration. In designing the network for the Volta Basin System, we were guided by the spatial.

  8. Moldavites from the Cheb Basin, Czech Republic

    Czech Academy of Sciences Publication Activity Database

    Skála, Roman; Strnad, L.; McCammon, C.; Čada, M.

    2009-01-01

    Roč. 73, č. 4 (2009), s. 1145-1179 ISSN 0016-7037 R&D Projects: GA ČR GA205/05/2593 Institutional research plan: CEZ:AV0Z30130516 Keywords : moldavites * tektites * Cheb Basin * geochemistry Subject RIV: DB - Geology ; Mineralogy Impact factor: 4.385, year: 2009

  9. SEMIOLOGIA DA LINGUAGEM DA ORTODOXIA TRINITÁRIA

    Directory of Open Access Journals (Sweden)

    Dr. Felix Alexandre Pastor

    1975-01-01

    Full Text Available Até que ponto pode ser considerada semioticamente relevante a linguagem teológica implicada nas fórmulas dogmáticas da ortodoxia trinitária? Por outras palavras, até que ponto a linguagem da ortodoxia trinitária deve ser considerada, ao nível da análise semiológica, sintaticamente legitima, semanticamente compreensível, pragmaticamente útil, na comunidade eclesial?

  10. K Basin sludge dissolution engineering study

    International Nuclear Information System (INIS)

    Westra, A.G.

    1998-01-01

    The purpose of this engineering study is to investigate the available technology related to dissolution of the K Basin sludge in nitric acid. The conclusion of this study along with laboratory and hot cell tests with actual sludge samples will provide the basis for beginning conceptual design of the sludge dissolver. The K Basin sludge contains uranium oxides, fragments of metallic U, and some U hydride as well as ferric oxyhydroxide, aluminum oxides and hydroxides, windblown sand that infiltrated the basin enclosure, ion exchange resin, and miscellaneous materials. The decision has been made to dispose of this sludge separate from the fuel elements stored in the basins. The sludge will be conditioned so that it meets Tank Waste Remediation System waste acceptance criteria and can be sent to one of the underground storage tanks. Sludge conditioning will be done by dissolving the fuel constituents in nitric acid, separating the insoluble material, adding neutron absorbers for criticality safety, and then reacting the solution with caustic to co-precipitate the uranium and plutonium. There will be five distinct feed streams to the sludge conditioning process two from the K East (KE) Basin and three from the K West (KW) Basin. The composition of the floor and pit sludges which contain more iron oxides and sand than uranium is much different than the canister sludges which are composed of mostly uranium oxides. The sludge conditioning equipment will be designed to process all of the sludge streams, but some of the operating parameters will be adjusted as necessary to handle the different sludge stream compositions. The volume of chemical additions and the amount of undissolved solids will be much different for floor and pit sludge than for canister sludge. Dissolution of uranium metal and uranium dioxide has been studied quite thoroughly and much information is available. Both uranium metal and uranium dioxide have been dissolved on a large scale in nuclear fuel

  11. Integrated high-resolution stratigraphy : Relative contributions of tectonics, eustasy and climate on basin evolution (Vienna Basin, Austria)

    NARCIS (Netherlands)

    Paulissen, W.E.

    2011-01-01

    Sedimentary basins form in a range of large-scale tectonic settings involving extensional, compressional or lateral movements. The dynamics of the basin infill are controlled by driving mechanisms such as tectonics, climate and eustatic control. The created accommodation space in the basin is filled

  12. Area environmental characterization report of the Dalhart and Palo Duro basins in the Texas Panhandle. Volume I. Dalhart Basin

    International Nuclear Information System (INIS)

    1982-09-01

    This area report describes the environmental characteristics of the Dalhart and Palo Duro basins of the Texas Panhandle portion of the Permian basin. Both basins are rather sparsely populated, and the overall population is decreasing. The economic base is centered on agribusiness and manufacturing. Most of the potentially conflicting land uses in both basins (i.e., parks, historic sites) occupy small land areas, with the exception of a national grassland in the Dalhart and military air training routes in both basins. Ground transportation in the Dalhart basin is adequate, and it is well developed in the Palo Duro basin. In both basins irrigation constitutes the principal water use, and groundwater is the principal source. However, the dominant aquifer, the Ogallala, is being depleted. Both basins consist primarily of grasslands, rangelands, and agricultural areas. No critical terrestrial or aquatic habitats have been identified in the basins, though several endangered, threatened, or rare terrestrial species occur in or near the basins. Aquatic resources in both basins are limited because of the intermittent availability of water and the high salt content of some water bodies. Playa lakes are common, though usually seasonal or rain dependent. The climate of the area is semiarid, with low humidity, relatively high wind speeds, and highly variable prcipitation. Restrictive dispersion conditions are infrequent. National ambient secondary air quality standards for particulates are being exceeded in the area, largely because of fugitive dust, although there are some particulate point sources

  13. Area environmental characterization report of the Dalhart and Palo Duro basins in the Texas Panhandle. Volume II. Palo Duro basin

    International Nuclear Information System (INIS)

    1982-09-01

    This area report describes the environmental characteristics of the Dalhart and Palo Duro basins of the Texas Panhandle portion of the Permian basin. Both basins are rather sparsely populated, and the overall population is decreasing. The economic base is centered on agribusiness and manufacturing. Most of the potentially conflicting land uses in both basins (i.e., parks, historic sites) occupy small land areas, with the exception of a national grassland in the Dalhart and military air training routes in both basins. Ground transportation in the Dalhart basin is adequate, and it is well developed in the Palo Duro basin. In both basins irrigation constitutes the principal water use, and groundwater is the principal source. However, the dominant aquifer, the Ogallala, is being depleted. Both basins consist primarily of grasslands, rangelands, and agricultural areas. No critical terrestrial or aquatic habitats have been identified in the basins, though several endangered, threatened, or rare terrestrial species occur in or near the basins. Aquatic resources in both basins are limited because of the intermittent availability of water and the high salt content of some water bodies. Playa lakes are common, though usually seasonal or rain dependent. The climate of the area is semiarid, with low humidity, relatively high wind speeds, and high variable precipitation. Restrictive dispersion conditions are infrequent. National ambient secondary air quality standards for particulates are being exceeded in the area, largely because of fugitive dust, although there are some particulate point sources

  14. Validade e confiabilidade da triagem: "teste da linguinha"

    OpenAIRE

    Martinelli, Roberta Lopes de Castro; Marchesan, Irene Queiroz; Lauris, José Roberto; Honório, Heitor Marques; Gusmão, Reinaldo Jordão; Berretin-Felix, Giédre

    2016-01-01

    RESUMO Objetivo: verificar as propriedades psicométricas de validade e confiabilidade, bem como a sensibilidade, especificidade e valores preditivos da Triagem Neonatal proposta a partir do Protocolo de Avaliação do Frênulo da Língua em Bebês. Métodos: estudo experimental retrospectivo, utilizando os dados de 100 bebês. Os bebês foram avaliados nas primeiras 48 horas por meio da triagem e com 30 dias utilizando o Protocolo de Avaliação do Frênulo da Língua em Bebês. As imagens e dados de to...

  15. Fishes of the Taquari-Antas river basin (Patos Lagoon basin, southern Brazil

    Directory of Open Access Journals (Sweden)

    FG. Becker

    Full Text Available The aquatic habitats of the Taquari-Antas river basin (in the Patos Lagoon basin, southern Brazil are under marked environmental transformation because of river damming for hydropower production. In order to provide an information baseline on the fish fauna of the Taquari-Antas basin, we provide a comprehensive survey of fish species based on primary and secondary data. We found 5,299 valid records of fish species in the basin, representing 119 species and 519 sampling sites. There are 13 non-native species, six of which are native to other Neotropical river basins. About 24% of the total native species are still lacking a taxonomic description at the species level. Three native long-distance migratory species were recorded (Leporinus obtusidens, Prochilodus lineatus, Salminus brasiliensis, as well as two potential mid-distance migrators (Parapimelodus nigribarbis and Pimelodus pintado. Although there is only one officially endangered species in the basin (S. brasiliensis, restricted range species (21.7% of total species should be considered in conservation efforts.

  16. Gravity-driven structures and rift basin evolution: Rio Muni Basin, offshore equatorial West Africa

    Energy Technology Data Exchange (ETDEWEB)

    Turner, J.P. [Univ. of Birmingham (United Kingdom)

    1995-08-01

    Offshore Equatorial Guinea, west Africa, gravity-driven nappes, more than 1 km thick and 15 km from head to toe, provide key evidence in reconstructing the late synrift: evolution of this part of the South Atlantic margin basin system. Furthermore, Aptian-Cenomanian carbonate and clastic rocks in the nappes` allochthonous hanging walls are attracting interest as a new exploration play in west Africa. The nappes exhibit a range of geometries that suggest they share many of the same deformation processes as thin-skin thrust and linked extensional fault systems. Not only are these structures significant in their own right, representing a rare example of gravity tectonics in the virtual absence of major halokinesis, but their presence may record an other-wise undetectable process active during the transition from a rift basin to a passive continental margin. A review of Equatorial Guinea in its pre-Atlantic configuration, alongside neighboring basins in Brazil (the Sergipe-Alagoas basin) and Gabon, suggests that gravity gliding was sustained by a relatively steep, westward paleoslope promoted by east-ward offset of the locus of thermal uplift from the rift basin (i.e., a simple shear model of basin formation). In contrast to gravity-driven structures in most postrift settings, the Equatorial Guinea nappes developed at the close of the Aptian-Albian synrift episode in response to a growing bathymetric deep caused by rapid subsidence outpacing restricted sedimentation.

  17. Mississippi Basin Carbon Project science plan

    Science.gov (United States)

    Sundquist, E.T.; Stallard, R.F.; Bliss, N.B.; Markewich, H.W.; Harden, J.W.; Pavich, M.J.; Dean, M.D.

    1998-01-01

    Understanding the carbon cycle is one of the most difficult challenges facing scientists who study the global environment. Lack of understanding of global carbon cycling is perhaps best illustrated by our inability to balance the present-day global CO2 budget. The amount of CO2 produced by burning fossil fuels and by deforestation appears to exceed the amount accumulating in the atmosphere and oceans. The carbon needed to balance the CO2 budget (the so-called "missing" carbon) is probably absorbed by land plants and ultimately deposited in soils and sediments. Increasing evidence points toward the importance of these terrestrial processes in northern temperate latitudes. Thus, efforts to balance the global CO2 budget focus particular attention on terrestrial carbon uptake in our own North American "backyard."The USGS Mississippi Basin Carbon Project conducts research on the carbon budget in soils and sediments of the Mississippi River basin. The project focuses on the effects of land-use change on carbon storage and transport, nutrient cycles, and erosion and sedimentation throughout the Mississippi River Basin. Particular emphasis is placed on understanding the interactions among changes in erosion, sedimentation, and soil dynamics. The project includes spatial analysis of a wide variety of geographic data sets, estimation of whole-basin and sub-basin carbon and sediment budgets, development and implementation of terrestrial carbon-cycle models, and site-specific field studies of relevant processes. The USGS views this project as a "flagship" effort to demonstrate its capabilities to address the importance of the land surface to biogeochemical problems such as the global carbon budget.

  18. Modeling fluid flow in faulted basins

    International Nuclear Information System (INIS)

    Faille, I.; Thibaut, M.; Cacas, M.C.; Have, P.; Willien, F.; Wolf, S.; Agelas, L.; Pegaz-Fiornet, S.

    2014-01-01

    This paper presents a basin simulator designed to better take faults into account, either as conduits or as barriers to fluid flow. It computes hydrocarbon generation, fluid flow and heat transfer on the 4D (space and time) geometry obtained by 3D volume restoration. Contrary to classical basin simulators, this calculator does not require a structured mesh based on vertical pillars nor a multi-block structure associated to the fault network. The mesh follows the sediments during the evolution of the basin. It deforms continuously with respect to time to account for sedimentation, erosion, compaction and kinematic displacements. The simulation domain is structured in layers, in order to handle properly the corresponding heterogeneities and to follow the sedimentation processes (thickening of the layers). In each layer, the mesh is unstructured: it may include several types of cells such as tetrahedra, hexahedra, pyramid, prism, etc. However, a mesh composed mainly of hexahedra is preferred as they are well suited to the layered structure of the basin. Faults are handled as internal boundaries across which the mesh is non-matching. Different models are proposed for fault behavior such as impervious fault, flow across fault or conductive fault. The calculator is based on a cell centered Finite Volume discretization, which ensures conservation of physical quantities (mass of fluid, heat) at a discrete level and which accounts properly for heterogeneities. The numerical scheme handles the non matching meshes and guaranties appropriate connection of cells across faults. Results on a synthetic basin demonstrate the capabilities of this new simulator. (authors)

  19. Faunal migration into the Late Permian Zechstein Basin

    DEFF Research Database (Denmark)

    Sørensen, Anne Mehlin; Håkansson, Eckart; Stemmerik, Lars

    2007-01-01

    the northern margin of Pangea is used to test hypotheses concerning Late Palaeozoic evolution of the North Atlantic region. During the Permian, the Atlantic rift system formed a seaway between Norway and Greenland from the boreal Barents Shelf to the warm and arid Zechstein Basin. This seaway is considered...... to be the only marine connection to the Zechstein Basin and therefore the only possible migration route for bryozoans to enter the basin. The distribution of Permian bryozoans is largely in keeping with such a connection from the cool Barents Shelf past the East Greenland Basin to the warm Zechstein Basin...

  20. A new occurrence of Anodontites tenebricosus (Bivalvia: Mycetopodidae) in the Sapucaí river basin, São Paulo, Brazil: environmental and conchological aspects

    OpenAIRE

    Troncon, EK.; Avelar, WEP

    2011-01-01

    The aim of this work was to register the occurrence of Anodontites tenebricosus (Bivalvia: Mycetopodidae) in the Sapucaí river basin, municipality of São Joaquim da Barra, São Paulo state, Brazil, associating its occurrence to the environment in which they are found, besides providing conchological data to contribute to the identification of the species. Fifty one specimens of Anodontites tenebricosus were studied regarding their conchological and morphometrical aspects. Strong correlations w...

  1. Composição específica e abundância da ictiofauna do rio dos Padres, bacia do rio Iguaçu, Brasil - DOI: 10.4025/actascibiolsci.v28i3.193 Specific composition and abundance of the ichthyofauna from Padres’ river, Iguaçu river basin, Brazil - DOI: 10.4025/actascibiolsci.v28i3.193

    Directory of Open Access Journals (Sweden)

    Vitor André Frana

    2007-11-01

    Full Text Available A composição e estrutura das comunidades de peixes podem ser consideradas como indicadores ecológicos e ambientais, constituindo-se desta forma como ferramenta para o manejo de bacias hidrográficas. O presente estudo objetivou levantar informações sobre a composição específica e abundância da ictiofauna do rio dos Padres. Foram realizadas amostragens trimestrais pelo método da pesca elétrica em dois pontos de coleta, um próximo à nascente e outro nas proximidades da foz. As coletas resultaram na captura de 7.026 exemplares pertencentes a 12 espécies distribuídas em sete famílias. A nascente apresentou uma alta densidade em número de indivíduos e menores valores de diversidade, eqüitabilidade e riqueza de espécies em relação à foz. O levantamento da composição específica e abundância da ictiofauna de um rio é de grande importância, por fornecer subsídio a futuros manejos e monitoramentos, tanto da comunidade aquática quanto do ambiente.The composition and structure of fish community can be considered ecological and environmental indicators. The present study aimed to survey information about the specific composition and abundance of the ichthyofauna from Padres’ River. Quarterly samplings were accomplished by the method of the electrofishing in two sample sites, one close to the headwater and another in the proximities of the mouth. The collections resulted in the capture of 7026 specimens belonging to 12 species, which, in turn, fit in seven different families. The headwater presented a high density in number of individuals and smaller values of diversity, evenness and richness of species in relation to the mouth. The raising of the specific composition and abundance of the ichthyofauna of a river is of great importance for supplying subsidy to future managements and accompaniment, as much of the aquatic community as of the environment.

  2. Distribution, Statistics, and Resurfacing of Large Impact Basins on Mercury

    Science.gov (United States)

    Fassett, Caleb I.; Head, James W.; Baker, David M. H.; Chapman, Clark R.; Murchie, Scott L.; Neumann, Gregory A.; Oberst, Juergen; Prockter, Louise M.; Smith, David E.; Solomon, Sean C.; hide

    2012-01-01

    The distribution and geological history of large impact basins (diameter D greater than or equal to 300 km) on Mercury is important to understanding the planet's stratigraphy and surface evolution. It is also informative to compare the density of impact basins on Mercury with that of the Moon to understand similarities and differences in their impact crater and basin populations [1, 2]. A variety of impact basins were proposed on the basis of geological mapping with Mariner 10 data [e.g. 3]. This basin population can now be re-assessed and extended to the full planet, using data from the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft. Note that small-to- medium-sized peak-ring basins on Mercury are being examined separately [4, 5]; only the three largest peak-ring basins on Mercury overlap with the size range we consider here. In this study, we (1) re-examine the large basins suggested on the basis of Mariner 10 data, (2) suggest additional basins from MESSENGER's global coverage of Mercury, (3) assess the size-frequency distribution of mercurian basins on the basis of these global observations and compare it to the Moon, and (4) analyze the implications of these observations for the modification history of basins on Mercury.

  3. Alopecia cicatricial da sarcoidose

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    Teixeira Giane Pereira Giro

    2003-01-01

    Full Text Available Os autores apresentam um caso de alopecia cicatricial associada a lesões papulosas na face e no tronco, com quatro anos de evolução. O diagnóstico de sarcoidose foi confirmado pelo exame histopatológico. Durante o seguimento, a paciente desenvolveu lesões pulmonares. A alopecia cicatricial é complicação rara da sarcoidose e se confunde, clinicamente, com outras dermatoses, entre elas o lúpus eritematoso discóide e o líquen plano pilar.

  4. A moral da infidelidade

    Directory of Open Access Journals (Sweden)

    Bundt, Roger

    2007-01-01

    Full Text Available Através das representações da infidelidade conjugal encontradas em três filmes do diretor Adrian Lyne realizados nas décadas de 1980, 1990 e 2000 (Atração Fatal, Proposta Indecente e Infidelidade, busca- se entender as idéias trabalhadas em cada obra, as maneiras de representar a mulher, a família, a relação amorosa e a monogamia, a partir das noções de dever e moral trabalhadas por Gilles Lipovetsky

  5. A moralidade da nanotecnologia

    OpenAIRE

    Pyrrho,Monique; Schramm,Fermin Roland

    2012-01-01

    A nanotecnologia é um conjunto formado por saberes, técnicas e práticas que estudam e exploram as novas propriedades dos materiais, quando manipulados em níveis atômicos e moleculares. A possibilidade técnica de organizar e controlar a matéria, desde suas menores dimensões e unidades, pode implicar profundas transformações no processo industrial de produção e ter consequências, moralmente significativas, sobre as inter-relações humanas, a organização da conjuntura social vigente e o próprio f...

  6. HISTÓRIA E TEOLOGIA DA INFALIBILIDADE DA IGREJA

    Directory of Open Access Journals (Sweden)

    Bernard Sesboüé

    2014-01-01

    Full Text Available Faz-se o histórico da doutrina da infalibilidade da Igreja e, especialmente, do papa, diante da sensibilidade de hoje e diante da discrição do Vaticano II. Trata-se da verdade e da certeza da verdade na Igreja, que não pode errar. Distingue-se entre a indefectibilidade (da Igreja e a infalibilidade, que implica a irreformabilidade da proposição. No primeiro milênio tinha-se consciência do dom da inerrância confiado à Igreja. Na Idade Média, acentua-se a plenitude do poder atribuída ao papa. O caso de João XXII e dos franciscanos espirituais, o problema do papa herege, o cisma ocidental e os concílios de Constança e de Basileia, a crise jansenista e o empenho de Fénelon levaram finalmente, no Vaticano I, à definição da infalibilidade papal. Esta, porém, não foi invocada com a frequência que se esperava. O Vaticano II ensina dentro da indefectibilidade da fé, sem definições irreformáveis. ABSTRACT: This article presents the history of the doctrine of the infallibility of the Church, and especially of the Pope, in light of the today’s sensibility and of the discretion of Vatican II. It deals with the truth and certainty of truth in the Church, which cannot err. A distinction is made between the indefectibility (of the Church and the infallibility, which implies a “non-reformability” of the proposition. In the first Millennium there was an awareness of the gift of inerrancy entrusted to the Church. In the Middle Ages, the fullness of power assigned to the Pope became accentuated. The case of John XXII and of the spiritual Franciscans, the problem of the heretical pope, the Western schism and the Councils of Constance and Basileia, the Jansenist crisis and the work of Fénelon led finally, in Vatican I, to the definition of papal infallibility. This, however, was not invoked as often as expected. Vatican II teaches within the indefectibility of faith, without unalterable definitions.

  7. In situ characterization of Hanford K Basins fuel

    Energy Technology Data Exchange (ETDEWEB)

    Pitner, A.L.

    1998-01-06

    Irradiated N Reactor uranium metal fuel is stored underwater in the Hanford K East and K West Basins. In K East Basin, fuel is stored in open canisters and defected fuel is free to react with the basin water. In K West Basin, the fuel is stored in sealed canisters filled with water containing a corrosion inhibitor (potassium nitrite). To gain a better understanding of the physical condition of the fuel in these basins, visual surveys using high resolution underwater cameras were conducted. The inspections included detailed lift and look examinations of a number of fuel assemblies from selected canisters in each basin. These examinations formed the bases for selecting specific fuel elements for laboratory testing and analyses as prescribed in the characterization plan for Hanford K Basin Spent Nuclear Fuel.

  8. Evolution of the Rembrandt impact basin on Mercury.

    Science.gov (United States)

    Watters, Thomas R; Head, James W; Solomon, Sean C; Robinson, Mark S; Chapman, Clark R; Denevi, Brett W; Fassett, Caleb I; Murchie, Scott L; Strom, Robert G

    2009-05-01

    MESSENGER's second Mercury flyby revealed a ~715-kilometer-diameter impact basin, the second-largest well-preserved basin-scale impact structure known on the planet. The Rembrandt basin is comparable in age to the Caloris basin, is partially flooded by volcanic plains, and displays a unique wheel-and-spoke-like pattern of basin-radial and basin-concentric wrinkle ridges and graben. Stratigraphic relations indicate a multistaged infilling and deformational history involving successive or overlapping phases of contractional and extensional deformation. The youngest deformation of the basin involved the formation of a approximately 1000-kilometer-long lobate scarp, a product of the global cooling and contraction of Mercury.

  9. Tectonic setting of Cretaceous basins on the NE Tibetan Plateau: Insights from the Jungong basin

    Science.gov (United States)

    Craddock, W.H.; Kirby, E.; Dewen, Z.; Jianhui, L.

    2012-01-01

    Quantifying the Cenozoic growth of high topography in the Indo-Asian collision zone remains challenging, due in part to significant shortening that occurred within Eurasia before collision. A growing body of evidence suggests that regions far removed from the suture zone experienced deformation before and during the early phases of Himalayan orogenesis. In the present-day north-eastern Tibetan Plateau, widespread deposits of Cretaceous sediment attest to significant basin formation; however, the tectonic setting of these basins remains enigmatic. We present a study of a regionally extensive network of sedimentary basins that are spatially associated with a system of SE-vergent thrust faults and are now exposed in the high ranges of the north-eastern corner of the Tibetan Plateau. We focus on a particularly well-exposed basin, located ~20km north of the Kunlun fault in the Anyemaqen Shan. The basin is filled by ~900m of alluvial sediments that become finer-grained away from the basin-bounding fault. Additionally, beds in the proximal footwall of the basin-bounding fault exhibit progressive, up-section shallowing and several intraformational unconformities which can be traced into correlative conformities in the distal part of the basin. The observations show sediment accumulated in the basin during fault motion. Regional constraints on the timing of sediment deposition are provided by both fossil assemblages from the Early Cretaceous, and by K-Ar dating of volcanic rocks that floor and cross-cut sedimentary fill. We argue that during the Cretaceous, the interior NE Tibetan Plateau experienced NW-SE contractional deformation similar to that documented throughout the Qinling-Dabie orogen to the eas