The genus Clathria from the Gulf of Mexico and Mexican Caribbean, with redescription and resurrection of Clathria carteri (Poecilosclerida: Microcionidae).

Science.gov (United States)

Gómez, Patricia

2014-04-16

The present study deals with the morphologic variability of eight Clathria species from the southern Gulf of Mexico and Mexican Caribbean. Clathria (Clathria) foliacea, C. (C.) carteri, C. (Microciona) calla, C. (M.) echinata, C. (M.) spinosa, C. (Thalysias.) venosa, and C. (T.) virgultosa were collected by scuba diving and dredging from the southern Gulf of Mexico (Veracruz, Campeche Bank, Yucatan) to the Caribbean coast (Quintana Roo) from shoreline to 120 m depth. The population of Clathria seems to be neither abundant nor diverse in the studied area. However, the seven species considered here are presumed to have a slight morphologic variability, and the interspecific relationships had not been fully resolved. The present study focuses on their differentiation through comparison of external morphology, skeletal architecture, spiculation and measurements of characters as well as scanning electronic microscopy.    Comparisons were made among intra- and interspecific material and with the available type material. In particular, C. carteri Topsent (1889), previously synonymized with C. foliacea, is resurrected by establishing a neotype from material from the type locality, Campeche Bank; this has not been studied since its original description and is here redescribed for the first time. Another neotype is assigned for C. foliacea from Campeche also, since the original material is no longer available, and this species is redescribed also. Significant differences in spiculation between C. foliacea and C. carteri were found by one-way ANOVA. Although C. (T.) venosa resembles C. (T.) raraechelae in spiculation, these two species differ in measurements and skeletal organization. C. (T.) virgultosa is typified by a peculiar acanthostyle that is markedly spined on distal parts of the shaft, and by two types of tiny microscleres. This study has extended the known geographic distribution of each of these Clathria spp. within the lower Gulf of Mexico.

Horizontal movements of Atlantic blue marlin (Makaira nigricans) in the Gulf of Mexico

Science.gov (United States)

Kraus, R.T.; Wells, R.J.D.; Rooker, J.R.

2011-01-01

We examined movements of Atlantic blue marlin (Makaira nigricans) from the Gulf of Mexico based upon 42 pop-up archival transmitting (PAT) tags. Long deployments (including one 334-day track) revealed diverse movement patterns within the Gulf of Mexico. North-south seasonal changes in blue marlin distribution showed strong correspondence with established seasonal patterns of sea surface temperature and primary production. During the summer spawning season, blue marlin utilized outer shelf and shelf edge waters in the northern Gulf of Mexico, and longer duration tracks indicated overwintering habitats in the Bay of Campeche. Egress occurred throughout the year and was difficult to determine because some tracks ended in the Straits of Florida (n = 3) while other tracks recorded movement through it or the Yucatan Channel (n = 4). Our results indicate that Atlantic blue marlin have a more restricted geographic range of habitats than previously recognized and that the Gulf of Mexico provides spatially dynamic suitable habitat that is utilized year-round through seasonal movements. ?? 2011 Springer-Verlag.

La reforma agraria en Campeche, ¿permanencia de una cultura indí­gena? The Agrarian Reform in Campeche, Continuation of an Indigenous Culture?

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Mauricio Cantún Caamal

2012-04-01

Full Text Available En este trabajo mostraremos el proceso histórico de la reforma agraria mexicana del siglo XX y cómo se dio en el estado de Campeche. Veremos cómo un intento de los gobiernos posrevolucionarios por restituir y dorar de tierras a las comunidades se convirtió en la oportunidad de rescatar y consolidar la tenencia comunal. También cómo las omisiones e inconsistencias de las leyes durante el proceso dio lugar a errores como no contemplar que las comunidades tuvieran aún tierras y no saber cómo clasificarlas. En la mayoría de las veces estos desaciertos permitieron que los campesinos obtuvieran grandes extensiones de tierra. Finalmente discutiremos cómo la reforma agraria permitió la permanencia de un elemento cultural como lo es posesión en común, el cual ha formado parte de la identidad de los grupos mayas del estado de Campeche.This paper shows the historical process of the Mexican agrarian reform in the 20th century and explains how ¡t took place in the state of Campeche. It demonstrates how an attempt by post-revolutionary governments to return and provide land for communities became an opportunity to restore and consolidate communal ownership. It also reveals how the omissions and inconsistencies of the laws during the process gave rise to errors such as not imagining that communities still had land and not knowing how to classify them. Nevertheless, most of the time, these mistakes enabled peasants to obtain large expanses of land. Lastly, it discusses the way the agrarian reform permitted the continuation of a cultural feature, common ownership, which has formed part of the identity of Maya groups in the state of Campeche.

Knolls Atomic Power Laboratory environmental monitoring report, calendar year 1999

Energy Technology Data Exchange (ETDEWEB)

None

2000-12-01

The results of the effluent and environmental monitoring programs at the three Knolls Atomic Power Laboratory (KAPL) Sites are summarized and assessed in this report. Operations at the three KAPL Sites [Knolls Site, Niskayuna, New York; Kesselring Site, West Milton, New York; S1C Site, Windsor, Connecticut] during calendar year 1999 resulted in no significant release of hazardous substances or radioactivity to the environment. The effluent and environmental monitoring programs conducted by KAPL are designed to determine the effectiveness of treatment and control methods, to provide measurement of the concentrations in effluents for comparison with applicable standards, and to assess resultant concentrations in the environment. The monitoring programs include analyses of samples of liquid and gaseous effluents for chemical constituents and radioactivity as well as monitoring of environmental air, water, sediment, and fish. Radiation measurements are also made around the perimeter of each Site and at off-site background locations.

Knolls Atomic Power Laboratory environmental monitoring report, calendar year 1999

International Nuclear Information System (INIS)

2000-01-01

The results of the effluent and environmental monitoring programs at the three Knolls Atomic Power Laboratory (KAPL) Sites are summarized and assessed in this report. Operations at the three KAPL Sites [Knolls Site, Niskayuna, New York; Kesselring Site, West Milton, New York; S1C Site, Windsor, Connecticut] during calendar year 1999 resulted in no significant release of hazardous substances or radioactivity to the environment. The effluent and environmental monitoring programs conducted by KAPL are designed to determine the effectiveness of treatment and control methods, to provide measurement of the concentrations in effluents for comparison with applicable standards, and to assess resultant concentrations in the environment. The monitoring programs include analyses of samples of liquid and gaseous effluents for chemical constituents and radioactivity as well as monitoring of environmental air, water, sediment, and fish. Radiation measurements are also made around the perimeter of each Site and at off-site background locations

Cuerpos inhumanos en vasijas del estado de Campeche Bodies buried in vassels from Campeche state

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Albertina Ortega Palma

2010-01-01

Full Text Available En este trabajo presentamos los resultados del proceso de microexcavación y análisis osteológico de dos entierros de sujetos infantiles, uno de edad fetal (32 a 34 semanas y otro de alrededor de 4 años de edad en el momento de la muerte, en dos vasijas procedentes del estado de Campeche, pertenecientes al Clásico Tardío y Terminal. La excavación metódica y el registro en dibujo y fotografía, así como el estudio tafonómico, permitieron reconstruir en tercera dimensión la probable posición original en el momento de ser depositados. Asimismo, estos casos permiten ubicar otras regiones dentro de la entidad que usaron este sistema funerario, además de los ya conocidos en Jaina.We present the results of the osteological analysis and microexcavación of two burials of children's subjects, one of fetal age (32 to 34 weeks and one about 4 years old at the time of death, in two funerary pots from state of Campeche, belonging to the Late Classical and Terminal. The methodical digging, and drawing and photographic record, as well as the taphonomic study, led rebuild in third dimension the probable original position at the time of being deposited. Also, these cases allow us to locate elsewhere within the entity other regions that applied this funeral system in addition to those already known at Jaina.

Knolls Atomic Power Laboratory environmental monitoring report, calendar year 2000

International Nuclear Information System (INIS)

2001-01-01

The results of the effluent and environmental monitoring programs at the three Knolls Atomic Power Laboratory (KAPL) Sites are summarized and assessed in this report. Operations at the Knolls Site, Niskayuna, New York and the Kesselring Site, West Milton, New York and site closure activities at the S1C Site, Windsor, Connecticut, continued to have no adverse effect on human health and the quality of the environment during calendar year 2000. The effluent and environmental monitoring programs conducted by KAPL are designed to determine the effectiveness of treatment and control methods, to provide measurement of the concentrations in effluents for comparison with applicable standards, and to assess resultant concentrations in the environment. The monitoring programs include analyses of samples of liquid and gaseous effluents for chemical constituents and radioactivity as well as monitoring of environmental air, water, sediment, and fish. Radiation measurements are also made around the perimeter of each Site and at off-site background locations. Monitoring programs at the S1C Site were reduced in scope during calendar year 2000 due to completion of site dismantlement activities during 1999

Knolls Atomic Power Laboratory environmental monitoring report, calendar year 2000

Energy Technology Data Exchange (ETDEWEB)

None

2001-12-01

The results of the effluent and environmental monitoring programs at the three Knolls Atomic Power Laboratory (KAPL) Sites are summarized and assessed in this report. Operations at the Knolls Site, Niskayuna, New York and the Kesselring Site, West Milton, New York and site closure activities at the S1C Site, Windsor, Connecticut, continued to have no adverse effect on human health and the quality of the environment during calendar year 2000. The effluent and environmental monitoring programs conducted by KAPL are designed to determine the effectiveness of treatment and control methods, to provide measurement of the concentrations in effluents for comparison with applicable standards, and to assess resultant concentrations in the environment. The monitoring programs include analyses of samples of liquid and gaseous effluents for chemical constituents and radioactivity as well as monitoring of environmental air, water, sediment, and fish. Radiation measurements are also made around the perimeter of each Site and at off-site background locations. Monitoring programs at the S1C Site were reduced in scope during calendar year 2000 due to completion of site dismantlement activities during 1999.

Hongos tremeloides (Heterobasidiomycetes de la Reserva de la Biosfera de Calakmul, Campeche, México Tremelloid fungi (Heterobasidiomycetes from Calakmul Biosphere Reserve, Campeche, Mexico

Directory of Open Access Journals (Sweden)

Sigfrido Sierra

2012-03-01

Full Text Available Se registran 7 especies de hongos tremeloides de la Reserva de la Biosfera de Calakmul: Auricularia cornea Ehrenb., A. delicata (Fr. Henn., A. mesenterica (Dicks. Pers., Dacryopinax elegans (Berk. et M.A. Curtis G.W. Martin, D. spathularia (Schwein. G.W. Martin, Tremella wrightii Berk. et M.A. Curtis y Tremelloscypha gelatinosa (Murrill Oberw. et K. Wells. Todas son registros nuevos para la reserva. Auricularia cornea y T. gelatinosa son nuevos registros para el estado de Campeche.Seven species of tremelloid fungi are recorded from Calakmul Biosphere Reserve: Auricularia cornea Ehrenb., A. delicata (Fr. Henn., A. mesenterica (Dicks. Pers., Dacryopinax elegans (Berk. et M.A. Curtis G.W. Martin, D. spathularia (Schwein. G.W. Martin, Tremella wrightii Berk. et M.A. Curtis and Tremelloscypha gelatinosa (Murrill Oberw. et K. Wells. All are new records for the reserve. Auricularia cornea and T. gelatinosa are new records for Campeche state.

Synthetic Seismograms Derived from Oceanographic Data in the Campeche Canyon, Deepwater Gulf of Mexico

Science.gov (United States)

Gonzalez-Orduno, A.; Fucugauchi, J. U.; Monreal, M.; Perez-Cruz, G.; Salas de León, D. A.

2013-05-01

The seismic reflection method has been successfully applied worldwide to investigate subsurface conditions to support important business decisions in the oil industry. When applied in the marine environment, useful reflection information is limited to events on and below the sea floor; Information from the water column, if any, is disregarded. Seismic oceanography is emerging as a new technique that utilize the reflection information within the water column to infer thermal-density contrasts associated with oceanographic processes, such as cyclonic-anticyclonic eddies, ascending-descending water flows, and water flows related to rapid topographic changes on the sea floor. A seismic investigation to infer such oceanographic changes in one sector of the Campeche Canyon is in progress as a research matter at the Instituto de Ciencias del Mar y Limnologia from the University of Mexico (UNAM). First steps of the investigation consisted of creating synthetic seismograms based on oceanographic information (temperature and density) derived from direct observation on a series of close spaced depth points along vertical profiles. Details of the selected algorithms used for the transformation of the oceanographic data to acoustic impedances data sets and further construction of synthetic seismograms on each site and their representation as synthetic seismic sections, are presented in this work, as well as the road ahead in the investigation.

BOVINE RESPIRATORY SYNCYTIAL VIRUS EPIDEMIOLOGY AND RISK FACTORS ON CATTLE HERDS OF CAMPECHE STATE, MEXICO

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Lisandro Alberto Encalada Mena

2016-12-01

Full Text Available High seroprevalence in Yucatan and proximity to the state of Campeche make it necessary to determine the seroprevalence and risk factors of bovine respiratory syncytial virus (VRSB in the state of Campeche, Mexico. Thus the objective of the present work was to determine the seroprevalence and risk factors bovine respiratory syncytial virus (BRSV of the state of Campeche, Mexico. The sampled of 36 cattle herds (842 sera were analyzed by indirect ELISA kit, in the 11 municipalities of Campeche. A survey to obtain risk factors (sex, age of animals, number of animals grazing density, management system, presence of sheep on the farm and access to the roadside was applied and calculated X2 for each variable considered. Of the total number of samples analyzed (842, 273 were positive (32.47%. The prevalence ranges found ranged from 0% to 84%, so in 9 of the herds there were no positive samples, indicating a 75% (27/36 of dispersion of this virus. X2 analysis indicated that all variables were significant and are risk factors regarding with respect to the variable seroprevalence of BRSV. The results indicate a wide circulation of BRSV and we suggest implement recommendations that will enable a lower spread of this virus in the cattle population.

Exploratory Data Analysis of Synthetic Aperture Radar (SAR Measurements to Distinguish the Sea Surface Expressions of Naturally-Occurring Oil Seeps from Human-Related Oil Spills in Campeche Bay (Gulf of Mexico

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Gustavo de Araújo Carvalho

2017-12-01

Full Text Available An Exploratory Data Analysis (EDA aims to use Synthetic Aperture Radar (SAR measurements for discriminating between two oil slick types observed on the sea surface: naturally-occurring oil seeps versus human-related oil spills—the use of satellite sensors for this task is poorly documented in scientific literature. A long-term RADARSAT dataset (2008–2012 is exploited to investigate oil slicks in Campeche Bay (Gulf of Mexico. Simple Classification Algorithms to distinguish the oil slick type are designed based on standard multivariate data analysis techniques. Various attributes of geometry, shape, and dimension that describe the oil slick Size Information are combined with SAR-derived backscatter coefficients—sigma-(σo, beta-(βo, and gamma-(γo naught. The combination of several of these characteristics is capable of distinguishing the oil slick type with ~70% of overall accuracy, however, the sole and simple use of two specific oil slick’s Size Information (i.e., area and perimeter is equally capable of distinguishing seeps from spills. The data mining exercise of our EDA promotes a novel idea bridging petroleum pollution and remote sensing research, thus paving the way to further investigate the satellite synoptic view to express geophysical differences between seeped and spilled oil observed on the sea surface for systematic use.

Knolls Atomic Power Laboratory environmental monitoring report, calendar year 1996

International Nuclear Information System (INIS)

1996-01-01

The results of the effluent and environmental monitoring programs at the three Knolls Atomic Power Laboratory (KAPL) sites are summarized and assessed in this report. The principal function at KAPL sites (Knolls, Kesselring, and Windsor) is research and development in the design and operation of Naval nuclear propulsion plants. The Kesselring Site is also used for the training of personnel in the operation of these plants. The Naval nuclear propulsion plant at the Windsor Site is currently being dismantled. Operations at the three KAPL sites resulted in no significant release of hazardous substances or radioactivity to the environment. The effluent and environmental monitoring programs conducted by KAPL are designed to determine the effectiveness of treatment and control methods, to provide measurement of the concentrations in effluents for comparison with applicable standards, and to assess resultant concentrations in the environment. The monitoring programs include analyses of samples of liquid and gaseous effluents for chemical constituents and radioactivity as well as monitoring of environmental air, water, sediment, and fish. Radiation measurements are also made around the perimeter of each site and at off-site background locations

Knolls Atomic Power Laboratory environmental monitoring report, calendar year 1996

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-12-31

The results of the effluent and environmental monitoring programs at the three Knolls Atomic Power Laboratory (KAPL) sites are summarized and assessed in this report. The principal function at KAPL sites (Knolls, Kesselring, and Windsor) is research and development in the design and operation of Naval nuclear propulsion plants. The Kesselring Site is also used for the training of personnel in the operation of these plants. The Naval nuclear propulsion plant at the Windsor Site is currently being dismantled. Operations at the three KAPL sites resulted in no significant release of hazardous substances or radioactivity to the environment. The effluent and environmental monitoring programs conducted by KAPL are designed to determine the effectiveness of treatment and control methods, to provide measurement of the concentrations in effluents for comparison with applicable standards, and to assess resultant concentrations in the environment. The monitoring programs include analyses of samples of liquid and gaseous effluents for chemical constituents and radioactivity as well as monitoring of environmental air, water, sediment, and fish. Radiation measurements are also made around the perimeter of each site and at off-site background locations.

Hazardous Waste Cleanup: USDOE Knolls Atomic Power Laboratory in Niskayuna, New York

Science.gov (United States)

The Knolls site is located at 2401 River Road in the Town of Niskayuna, Schenectady County, New York, on the south bank of the Mohawk River. Construction of the site began in 1948 and laboratory operations began in 1949. The site consists of 170 acres of

Summary of Training Workshop on the Use of NASA tools for Coastal Resource Management in the Gulf of Mexico

Energy Technology Data Exchange (ETDEWEB)

Judd, Chaeli; Judd, Kathleen S.; Gulbransen, Thomas C.; Thom, Ronald M.

2009-03-01

A two-day training workshop was held in Xalapa, Mexico from March 10-11 2009 with the goal of training end users from the southern Gulf of Mexico states of Campeche and Veracruz in the use of tools to support coastal resource management decision-making. The workshop was held at the computer laboratory of the Institute de Ecologia, A.C. (INECOL). This report summarizes the results of that workshop and is a deliverable to our NASA client.

78 FR 37210 - Parker Knoll Hydro, LLC; Notice of Environmental Site Review

Science.gov (United States)

2013-06-20

... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 13239-002] Parker Knoll Hydro, LLC; Notice of Environmental Site Review Take notice that the following hydroelectric applications have been filed with Commission and are available for public inspection: a. Type of Application: New Major License. b. Project No.: 13239. c. Date...

Spatial dynamics of the red grouper Epinephelus morio (Pisces: Serranidae on the Campeche Bank, Gulf of Mexico

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Jorge A. López-Rocha

2013-06-01

Full Text Available The spatial dynamics of the red grouper Epinephelus morio plays a fundamental role in the fishery management on the Campeche Bank, where it is overfished. The objective of this study was to characterize the spatial dynamics of this population. We used a dynamic model of spatial distribution to estimate population movement rates between adjacent areas. The model was applied using information on catch per unit effort and length-frequency distributions for the Mexican mid-sized fleet that operated in the area in the period 1973-1977. These data were chosen to ensure that the information would reflect the condition of the resource before overfishing. It was possible to quantify the spatial dynamics of the red grouper and the results were consistent with previously known movement patterns. The results showed different movement rates and temporal patterns of movement for different population sectors. The spawning aggregations and the seasonal upwelling occurring in the eastern part of the Bank were considered as key factors influencing the pattern of population movements.

Suicide behavior and associated psychosocial factors among adolescents in Campeche, Mexico.

Science.gov (United States)

González-Forteza, Catalina; Juárez-López, Carlos E; Jiménez, Alberto; Montejo-León, Liliana; Rodríguez-Santisbón, Ulises R; Wagner, Fernando A

2017-12-01

Suicide is an important public health problem that requires a preventive approach. The present study aimed at assessing suicidal behaviors and their relations with other psychosocial factors in Campeche, Mexico, in order to inform the design of potential preventive interventions. A multistage probability sample of 2386 students representative of all middle schools of the state of Campeche, Mexico, took a standardized, paper-and-pencil survey covering selected psychosocial constructs including suicide behavior, depression, drug use, familial relationships, locus of control, impulsivity, and self-esteem, among others. Latent classes were identified and multinomial logistic regression was used to analyze associations between class membership and psychosocial covariates. An estimated 8% of the middle school population in Campeche had three or more psychosocial problems in the past month including drug use, major depression episode symptoms, as well as suicidal problems like attempts and self-inflicted injuries. Four latent classes were identified, one with lowest risk and three with varying characteristics in terms of binge alcohol and other drug use, depression, and suicide behaviors. Associations between psychosocial covariates and latent class were observed, as predicted based on a multi-dimensional theoretical framework. Heterogeneity across "High-Risk" groups and their potential determinants highlight the need for differentiated, specialized efforts ranging from universal to indicated interventions. Given the high level of risk factors in this population, universal preventive interventions should aim at building resiliency among youth by helping them develop an array of coping resources, as well as by creating a more nurturing psychosocial environment. Copyright © 2017 Elsevier Inc. All rights reserved.

Coral reef connectivity within the Western Gulf of Mexico

Science.gov (United States)

Salas-Monreal, David; Marin-Hernandez, Mark; Salas-Perez, Jose de Jesus; Salas-de-Leon, David Alberto; Monreal-Gomez, Maria Adela; Perez-España, Horacio

2018-03-01

The yearlong monthly mean satellite data of the geostrophic velocities, the sea surface temperature and the chlorophyll-a values were used to elucidate any possible pathway among the different coral reef systems of the Western Gulf of Mexico (WGM). The geostrophic current velocities suggested different pathways connecting the coral reef areas. The typical coastal alongshore pathway constricted to the continental shelf, and two open ocean pathway, the first connecting the Campeche Reef System (CRS) with the Veracruz (VRS) and Tuxpan-Lobos Reef Systems (TLRS), and the second pathway connecting the Tuxpan-Lobos Reef System with the Flower Garden Reef System (FGRS). According to the pathways there should be more larvae transport from the southern Gulf of Mexico reef systems toward the FGRS than the other way. The connection from the southern Gulf of Mexico toward the FGRS took place during January, May, July, August and September (2015), while the connection from the FGRS toward the southern Gulf of Mexico reef system took place during January and February (2015), this was also suggested via model outputs. The density radio (R) was used as a first approximation to elucidate the influence of the freshwater continental discharges within the continental shelf. All coral reef areas were located where the Chlorophyll-a monthly mean values had values bellow 1 mg m- 2 with a density radio between 0 and 1, i.e. under the influence of continental discharges.

Metals in Bone Tissue of Antillean Manatees from the Gulf of Mexico and Chetumal Bay, Mexico.

Science.gov (United States)

Romero-Calderón, Ana G; Morales-Vela, Benjamin; Rosíles-Martínez, René; Olivera-Gómez, León D; Delgado-Estrella, Alberto

2016-01-01

Concentrations of seven metals (As, Cd, Cr, Cu, Pb, Ni, and Zn) were analyzed in 33 bone tissue samples of Antillean manatees (Trichechus manatus manatus) found dead in lagoons and rivers of Tabasco and Campeche in the Gulf of Mexico and Chetumal Bay in the Caribbean region. The concentrations of Cr, Cu, Pb, and Zn were significantly different between regions, with greater levels found in the Gulf of Mexico group than in the Mexican Caribbean group (p < 0.05). Pb concentrations differed significantly between adults and calves. No differences were observed between sexes. Metal concentrations detected in the manatee bones were higher than most of those reported for bones in other marine mammals around the world. Future studies are necessary to establish whether the metal concentrations represent a risk to the health of the species.

Satellite Derived Seafloor Bathymetry and Habitat Mapping on a Shallow Carbonate Platform: Campeche Bank, México.

Science.gov (United States)

Garza-Perez, J. R.; Rankey, E. C.; Rodriguez-Vázquez, R. A.; Naranjo-Garcia, M. J.

2017-12-01

Extensive and consistent high-resolution seafloor mapping is a difficult task involving important financial resources, intensive field work and careful planning; thus there is a paucity of this type of mapping products both in spatial distribution and through time. Remote sensed imagery has supported continuous mapping efforts elsewhere, but extensive seafloor mapping, even in shallow regions keeps being elusive. Challenges to this effort include cloud cover, surface sun-glint, and water turbidity caused by sediment resuspension and primary productivity. Nevertheless, using high-quality satellite imagery (Landsat-8 OLI -30x30m/pixel- and GeoEye-1 -2x2m/pixel) and rigorous pre-processing (atmospheric correction, de-glinting and water-column light extinction compensation), resulting data contribute towards the advancement of seafloor mapping. The Yucatan Peninsula in México is a carbonate ramp devoid of significant orographic features and surface water bodies. Its submerged portion is the Campeche Bank, gently sloping towards the Gulf of Mexico. The bottom features several distinct blankets composed by medium-fine sediment (dominated by pelecypods, gastropods, foraminifera, lithoclasts, calcareous peloids and algal nodules, Halimeda plaques and coralline algae fragments), and a reef unit with several bank-type coral reefs. Outside the coral reefs, biotic cover down to 20 m deep is dominated by macroalgae (red, brown, green), coralline and filamentous algae with sharp seasonal changes in abundance, from almost nil during north-winds (Oct. - Jan.) to high during dry (Feb.- May) and rainy seasons (Jun. - Sept.), with changes of dominance by algae groups between dry and rainy seasons. This bloom is favored by increases in sunlight and nutrients carried by the Caribbean current upwelling washing the Campeche Bank. Beyond 20 m depth, sandy plains dominate the seascape. Corals, octocorals, sponges and tunicates are spatially restricted to bottoms with thin layers of

Reprint of - Deep-sea coral and hardbottom habitats on the west Florida slope, eastern Gulf of Mexico

Science.gov (United States)

Ross, Steve W.; Rhode, Mike; Brooke, Sandra

2017-09-01

Until recently, benthic habitats dominated by deep-sea corals (DSC) appeared to be less extensive on the slope of the Gulf of Mexico (GOM) than in the northeast Atlantic Ocean or off the southeastern US. There are relatively few bioherms (i.e., coral-built mounds) in the northern GOM, and most DSCs are attached to existing hard substrata (e.g., authigenically formed carbonate). The primary structure-forming, DSC in the GOM is Lophelia pertusa, but structure is also provided by other living and dead scleractinians, antipatharians (black corals), octocorals (gorgonians, soft corals), hydrocorals and sponges, as well as abundant rocky substrata. The best development of DSCs in the GOM was previously documented within Viosca Knoll oil and gas lease blocks 826 and 862/906 (north-central GOM) and on the Campeche Bank (southern GOM in Mexican waters). This paper documents extensive deep reef ecosystems composed of DSC and rocky hard-bottom recently surveyed on the West Florida Slope (WFS, eastern GOM) during six research cruises (2008-2012). Using multibeam sonar, CTD casts, and video from underwater vehicles, we describe the physical and oceanographic characteristics of these deep reefs and provide size or area estimates of deep coral and hardground habitats. The multibeam sonar analyses revealed hundreds of mounds and ridges, some of which were subsequently surveyed using underwater vehicles. Mounds and ridges in <525 m depths were usually capped with living coral colonies, dominated by L. pertusa. An extensive rocky scarp, running roughly north-south for at least 229 km, supported lower abundances of scleractinian corals than the mounds and ridges, despite an abundance of settlement substrata. Areal comparisons suggested that the WFS may exceed other parts of the GOM slope in extent of living deep coral coverage and other deep-reef habitat (dead coral and rock). The complex WFS region warrants additional studies to better understand the influences of oceanography and

Culture-independent characterization of bacterial communities associated with the cold-water coral Lophelia pertusa in the northeastern Gulf of Mexico

Science.gov (United States)

Kellogg, C.A.; Lisle, J.T.; Galkiewicz, J.P.

2009-01-01

Bacteria are recognized as an important part of the total biology of shallow-water corals. Studies of shallow-water corals suggest that associated bacteria may benefit the corals by cycling carbon, fixing nitrogen, chelating iron, and producing antibiotics that protect the coral from other microbes. Cold-water or deep-sea corals have a fundamentally different ecology due to their adaptation to cold, dark, high-pressure environments and as such have novel microbiota. The goal of this study was to characterize the microbial associates of Lophelia pertusa in the northeastern Gulf of Mexico. This is the first study to collect the coral samples in individual insulated containers and to preserve coral samples at depth in an effort to minimize thermal shock and evaluate the effects of environmental gradients on the microbial diversity of samples. Molecular analysis of bacterial diversity showed a marked difference between the two study sites, Viosca Knoll 906/862 (VK906/862) and Viosca Knoll 826 (VK826). The bacterial communities from VK826 were dominated by a variety of unknown mycoplasmal members of the Tenericutes and Bacteroidetes, whereas the libraries from VK906/862 were dominated by members of the Proteobacteria. In addition to novel sequences, the 16S rRNA gene clone libraries revealed many bacterial sequences in common between Gulf of Mexico Lophelia corals and Norwegian fjord Lophelia corals, as well as shallow-water corals. Two Lophelia-specific bacterial groups were identified: a cluster of gammaproteobacteria related to sulfide-oxidizing gill symbionts of seep clams and a group of Mycoplasma spp. The presence of these groups in both Gulf and Norwegian Lophelia corals indicates that in spite of the geographic heterogeneity observed in Lophelia-associated bacterial communities, there are Lophelia-specific microbes. Copyright ?? 2009, American Society for Microbiology. All Rights Reserved.

A new species of the ghost shrimp genus Lepidophthalmus (Crustacea: Decapoda: Axiidea) from the southwestern Gulf of Mexico.

Science.gov (United States)

Felder, Darryl L

2015-07-13

A new species of Lepidophthalmus lacking a ventral median sclerite on the second abdominal somite is described from coastal waters of the southwestern Gulf of Mexico. Lepidophthalmus statoni sp. nov., originally recognized only as a unique population in allozyme studies, is sympatric with the ventrally plated species Lepidophthalmus manningi Felder & Staton, 2000, but more closely resembles Lepidophthalmus louisianensis (Schmitt, 1935) from the northern and northwestern Gulf of Mexico. Apparently restricted to intertidal and shallow subtidal tropical waters, the new species is known to range from western Campeche to middle-upper reaches of Veracruz, Mexico. As many members of the genus, it commonly inhabits euryhaline inlets, estuaries, and protected shorelines, including richly organic muddy to clayey sands and sandy muds adjacent to shoreline vegetation. Coloration is documented and discussed as a tool to facilitate field identifications, as are morphological characters.

Horizontal distribution of near-inertial waves in the western Gulf of Mexico: Eulerian vs Lagrangian.

Science.gov (United States)

Pallas Sanz, E.; García-Carrillo, P.; Garcia Gomez, B. I.; Lilly, J. M.; Perez-Brunius, P.

2016-02-01

The time-average horizontal distribution of the near-inertial waves (NIWs) on the western Gulf of Mexico (GoM) is investigated using horizontal velocity data obtained from Lagrangian trajectories of 200 surface drifters drogued at 50m and deployed between September 2008 and September 2012. Preliminary results suggest maximum time-averaged near-inertial circle radius of 2.6km located in the southern Campeche bay near [22N,95W]; implying an inertial velocity of about 0.14m/s. Similar conclusions are delineated using horizontal velocity data obtained from 21 moorings deployed in the western GoM during the same time period. Maximum near-inertial kinetic energy and clockwise spectral energy is found in the mooring LNK3500 located at 21.850N and 94.028W. Maximum inertial circles measured with mooring data, however, are of about 1.6km leading to inertial currents of 0.087m/s, approximately a 40% smaller. This discrepancy seems to be due to the different depth level of the measurements and the bandwidth used to extract the near-inertial oscillations from the total flow. The time-average horizontal distributions of wind work computed from Lagrangian and Eulerian data are compared and they are not consistent with the time-averaged NIW field. The differences are not well understood but we speculate they may be due to the different time scales of wind fluctuations in the northwestern GoM compared to those observed in the Bay of Campeche, together with the change of sign of the background vorticity in the region; being negative (anticyclonic) in the northern GoM and positive (cyclonic) in the Bay of Campeche.

Hydrocarbon-Based Communities in the Ultra-Deep Gulf of Mexico: Protecting the Asphalt Ecosystem

Science.gov (United States)

MacDonald, I. R.; Sahling, H.

2016-02-01

The term `asphalt volcanism' was coined to describe marine sites where extrusions of highly degraded oil form large expanses of hard substratum, which is then colonized by chemosynthetic fauna and sessile invertebrates. A site named `Chapopote', a knoll at 3200m in the southern Gulf of Mexico, was described as the type specimen of asphalt volcanism in 2003. A joint German-Mexican-U.S. expedition on the German ship F/S METEOR returned to the region in February and March, 2015 to quantify the extent and characteristics of Chapopote and other asphalt-hosting knolls using the SEAL AUV, QUEST ROV, shipborne acoustics, and autonomous instrument landers. Preliminary findings have greatly expanded the number of confirmed asphalt volcanoes, as well as sites where seepage was detected as gas flares in the water column. The morphology of asphalt flows, which was investigated using large-scale photo-mosaicking techniques, indicated that they form with a complex interplay of gravity flows, buoyant uplift, and chemical weathering. An unexpected finding was the occurrence of gas hydrate mounds, some exceeding 1000 m2 in area and 10 m in relief. Gas hydrate forms almost instantly at ambient depths and temperatures and there was evidence that large plugs of hydrate that can rapidly breach the seafloor. Older mounds are colonized by massive tubeworm aggregations that may serve to stabilize the hydrate. Mexico recently announced the first energy production lease sales in their `ultra-deep' offshore. In contrast to the U.S. Gulf, where extensive safeguards for chemosynthetic communities have been in place for over 25 years, few existing protocols protect the Mexican deep-sea asphalt ecosystem. The combination of extensive asphalt pavements and exposed gas hydrate also pose unusual hazards for exploration piston coring or drilling operations. The time is ripe to consider what conservation model would best serve the region.

Data Mining of Satellite-Based Measurements to Distinguish Natural From Man-Made Oil Slicks at the Sea Surface in Campeche Bay (Mexico)

Science.gov (United States)

Carvalho, G. D. A.; Minnett, P. J.; de Miranda, F. P.; Landau, L.; Paes, E.

2016-02-01

Campeche Bay, located in the Mexican portion of the Gulf of Mexico, has a well-established activity engaged with numerous oil rigs exploring and producing natural gas and oil. The associated risk of oil slicks in this region - that include oil spills (i.e. oil floating at the sea surface solely attributed to man-made activities) and oil seeps (i.e. surface footprint of the oil that naturally comes out of the seafloor reaching the surface of the ocean) - leads Pemex to be in a continuous state of alert for reducing possible negative influence on marine and coastal ecosystems. Focusing on a monitoring strategy, a multi-year dataset (2008-2012) of synthetic aperture radar (SAR) measurements from the RADARSAT-2 satellite is used to investigate the spatio-temporal distribution of the oil slicks observed at the surface of the ocean in the Campeche Bay region. The present study is an exploratory data analysis that seeks to discriminate between these two possible oil slick types: oil seeps and oil spills. Multivariate data analysis techniques (e.g. Principal Components Analysis, Clustering Analysis, Discriminant Function, etc.) are explored to design a data-learning classification algorithm to distinguish natural from man-made oil slicks. This analysis promotes a novel idea bridging geochemistry and remote sensing research to express geophysical differences between seeped and spilled oil. Here, SAR backscatter coefficients - i.e. sigma-naught (σo), beta-naught (βo), and gamma-naught (γo) - are combined with attributes referring to the geometry, shape, and dimension that describe the oil slicks. Results indicate that the synergy of combining these various characteristics is capable of distinguishing oil seeps from oil spills observed on the sea surface to a useful accuracy.

A new species of Acanthobothrium (Eucestoda: Onchobothriidae in Aetobatus cf. narinari (Myliobatidae from Campeche, México

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Erick Rodríguez-Ibarra

2018-03-01

Full Text Available Abstract The helminthological examination of nine individuals of Aetobatus cf. narinari (spotted eagle ray; raya pinta; arraia pintada revealed the presence of an undescribed species of cestode of the genus Acanthobothrium. The stingrays were collected from four locations in México: Laguna Términos, south of Isla del Carmen and the marine waters north of Isla del Carmen and Champotón, in the State of Campeche, and Isla Holbox, State of Quintana Roo. The new species, nominated Acanthobothrium marquesi, is a category 3 species (i.e, the strobila is long, has more than 50 proglottids, the numerous testicles greater than 80, and has asymmetrically-lobed ovaries; at the present, the only category 3 species that has been reported in the Western Atlantic Ocean is Acanthobothrium tortum. Acanthobothrium marquesi n. sp. can be distinguished from A. tortum by length (26.1 cm vs. 10.6 cm, greater number of proglottids (1,549 vs. 656, a larger scolex (707 µm long by 872 µm wide vs. 699 µm long by 665 µm wide, larger bothridia (626 µm long by 274 µm wide vs. 563 µm long by 238 µm wide. This is the first report of a species of Acanthobothrium from the Mexican coast of the Gulf México.

A new species of Acanthobothrium (Eucestoda: Onchobothriidae) in Aetobatus cf. narinari (Myliobatidae) from Campeche, México.

Science.gov (United States)

Rodríguez-Ibarra, Erick; Pulido-Flores, Griselda; Violante-González, Juan; Monks, Scott

2018-01-01

The helminthological examination of nine individuals of Aetobatus cf. narinari (spotted eagle ray; raya pinta; arraia pintada) revealed the presence of an undescribed species of cestode of the genus Acanthobothrium. The stingrays were collected from four locations in México: Laguna Términos, south of Isla del Carmen and the marine waters north of Isla del Carmen and Champotón, in the State of Campeche, and Isla Holbox, State of Quintana Roo. The new species, nominated Acanthobothrium marquesi, is a category 3 species (i.e, the strobila is long, has more than 50 proglottids, the numerous testicles greater than 80, and has asymmetrically-lobed ovaries); at the present, the only category 3 species that has been reported in the Western Atlantic Ocean is Acanthobothrium tortum. Acanthobothrium marquesi n. sp. can be distinguished from A. tortum by length (26.1 cm vs. 10.6 cm), greater number of proglottids (1,549 vs. 656), a larger scolex (707 µm long by 872 µm wide vs. 699 µm long by 665 µm wide), larger bothridia (626 µm long by 274 µm wide vs. 563 µm long by 238 µm wide). This is the first report of a species of Acanthobothrium from the Mexican coast of the Gulf México.

Gulf team delivers on DP drillship promise

Energy Technology Data Exchange (ETDEWEB)

Flatern, R von

2001-06-01

The technological achievements of the project by Amoco and BP to complete a deepwater subsea well in the Gulf of Mexico from a dynamically positioned (DP) vessel are described. In 2000, the dual activity drillship, Discoverer Enterprise (owned by Transocean Sedco Forex), completed the Nile well in the Viosca Knoll area and then the King Well in Mississippi Canyon Block 85. Stringent safety and environmental protection criteria imposed by Amoco and BP drove the design of the Dril-Quip subsea wellhead to ensure that the wellhead profile and connector coped with the worst case scenario. BP also specified a disconnect system that would secure the well in less than a minute. The SenTREE 7 and Commander telemetry systems developed by Schlumberger, the components of the work string and test work with the Nile well to ensure BP conditions were met and that the perforation and surge procedure proceeded successfully are explained. The time reduction achieved by using large DP drillships and future BP plans are outlined.

Euryphorus suarezi n. sp. (Copepoda: Caligidae) parasitic on an elasmobranch from the Gulf of Mexico.

Science.gov (United States)

Morales-Serna, Francisco Neptalí; Rodríguez-Santiago, María Amparo; Gómez, Samuel

2016-01-01

Currently, the caligid genus Euryphorus Milne Edwards, 1840 contains two valid species. A new species, Euryphorus suarezi, is described based on adult females and males collected from the spotted eagle ray Aetobatus narinari (Euphrasen) (Elasmobranchii: Myliobatidae), captured off Campeche and Tabasco, Mexico (southern coast of the Gulf of Mexico). The new species is mainly distinguished from its congeners by the absence of dorsal plates, the presence of postantennal process, bifurcated maxillule, maxilliped with slender corpus, and leg 4 with 3-segmented endopod. Leg 6 is conspicuous in the male. Additional differences are described. This is the first record of a species of Euryphorus from an elasmobranch host, which may provide insight into the evolutionary relationships within the Caligidae.

Prospección arqueológica: Okolhuitz, Campeche

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Adán Pacheco Benítez

2014-01-01

Full Text Available El objetivo principal de este trabajo es mostrar la importancia de la prospección arqueológica como método para ir más allá del simple conocimiento de la distribución de sitios arqueológicos en la región Río Bec. De esta manera, se muestran los trabajos de prospección realizados en el sitio arqueológico de Okolhuitz, Campeche, y sus resultados, con el fin de que permitan avanzar en el conocimiento y análisis del patrón de asentamiento en la región en la que se encuentra situado.

Radium variability produced by shelf-water transport and mixing in the western Gulf of Mexico

International Nuclear Information System (INIS)

Reid, D.F.

1984-01-01

226 Ra and 228 Ra exhibit significant temporal and spatial variability in the near-surface western Gulf of Mexico. Concentrations of both isotopes during March 1976 were approx. 22 to 26% greater than those observed during February 1973. It is shown that analytical differences cannot account for this increase. Consideration of radium levels in the western Caribbean Sea indicates that there must be an internal source of radium that has a significant but temporally variable influence on near-surface radium concentrations in the western Gulf. Comparisons of radium, salinity, and temperature data from 1973 and 1976 provide evidence that advective transport and mixing of radium-rich shelf water with the interior water column of the western basin is responsible for the variability. By plotting 228 Ra vs 226 Ra from this region, estimates of the apparent shelf-water component in the upper water column can be made. The results indicate 36% over the northern slope, 10 to 18% in the central western Gulf, and 3 to 7% over Campeche Bank. In addition to explaining observed short-term variations of radium in this region, this information should be useful for environmental impact assessments concerned with industrial discharges on the northern shelf. (author)

TEMPORAL VARIATION IN THE RED GROUPER, EPINEPHELUS MORIO, DEMOGRAPHIC STRUCTURE FROM SOUTHERN GULF OF MEXICO

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Doralice Caballero-Arango

2011-06-01

Full Text Available Changes in the demographic structure of red grouper Epinephelus morio from the southern part of the Gulf of Mexico, were evaluated during periods when total catches, CPUE and annual yields of the specie decreased. Fishery-dependent samples (n = 1887 were obtained between August 1989 and February 2004 from the Campeche Bank, and size-frequency distributions by sex, sex ratios and sizes of sexual maturation and sex change were compared between three periods: P11989-1992 (n = 886; P21996-1998 (n = 413; and P32003-2004 (n = 588. The temporal stability of size-frequency distribution by sex, with males always being larger than females, and the sex ratios always biased towards females, were consistent with this species’ type of sexuality. Size for females and males, as well as sizes at first sexual maturity and at sex reversal all decreased from the oldest period to the more recent one and could be a consequence of the fishing intensity applied to this stock. The reductions in size of females and males associated with a relatively stable sex ratio and the lack of any drastic decrease in the number of males can be explained by this species’ reproductive ecology. Results are discussed regarding the capacity for reproductive resilience of red grouper in response to fishing pressure like that currently experienced by the Campeche Bank stock.

Effects of oil spill related chemical pollution on helminth parasites in Mexican flounder Cyclopsetta chittendeni from the Campeche Sound, Gulf of Mexico.

Science.gov (United States)

Centeno-Chalé, Oscar Arturo; Aguirre-Macedo, Ma Leopoldina; Gold-Bouchot, Gerardo; Vidal-Martínez, Víctor Manuel

2015-09-01

During an environmental impact study of an accidental oil spill in the Campeche Sound in October 2007, we examined the helminth parasites of the benthic flatfish Cyclopsetta chittendeni as well as the concentrations of hydrocarbons and heavy metals in the sediment. The aim of this study was to determine the potential effects of these contaminants on the helminth communities of the flatfish. A total of 427 hosts were examined, and 16,895 helminths, representing 17 species, were obtained from two surveys (March and July, 2008). Statistically significant negative associations were observed between the hydrocarbons and helminth parasite abundances using multivariate methods. The results suggest that in October 2007, the oil spill had a strong negative effect on these helminth communities. However, after five months, the impacted stations were re-populated by both the flatfish and helminths. The most likely explanation for this rapid recovery is the rescue effect from non-impacted habitats to impacted stations. Copyright © 2015 Elsevier Inc. All rights reserved.

Knolls Atomic Power Laboratory annual environmental monitoring report, calendar year 1997

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-12-31

The results of the effluent and environmental monitoring programs at the three Knolls Atomic Power Laboratory (KAPL) sites are summarized and assessed in this report. The effluent and environmental monitoring programs conducted by KAPL are designed to determine the effectiveness of treatment and control methods, to provide measurement of the concentrations in effluents for comparison with applicable standards, and to assess resultant concentrations in the environment. The monitoring programs include analyses of samples of liquid and gaseous effluents for chemical constituents and radioactivity as well as monitoring of environmental air, water, sediment, and fish. Radiation measurements are also made around the perimeter of each site and at off-site background locations.

Knolls Atomic Power Laboratory annual environmental monitoring report, calendar year 1997

International Nuclear Information System (INIS)

1997-01-01

The results of the effluent and environmental monitoring programs at the three Knolls Atomic Power Laboratory (KAPL) sites are summarized and assessed in this report. The effluent and environmental monitoring programs conducted by KAPL are designed to determine the effectiveness of treatment and control methods, to provide measurement of the concentrations in effluents for comparison with applicable standards, and to assess resultant concentrations in the environment. The monitoring programs include analyses of samples of liquid and gaseous effluents for chemical constituents and radioactivity as well as monitoring of environmental air, water, sediment, and fish. Radiation measurements are also made around the perimeter of each site and at off-site background locations

77 FR 68764 - Parker Knoll Hydro, LLC; Notice of Intent To Prepare An Environmental Impact Statement and Notice...

Science.gov (United States)

2012-11-16

... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Project No. 13239-002] Parker Knoll Hydro, LLC; Notice of Intent To Prepare An Environmental Impact Statement and Notice of Scoping Meetings and Soliciting Scoping Comments Take notice that the following hydroelectric applications have been filed with Commission and are available for...

Architect-Designed Interiors for a Culturally Progressive Upper-Middle Class. The Implicit Political Presence of Knoll International in Belgium

NARCIS (Netherlands)

Floré, F.M.W.; Schuldenfrei, R.

2012-01-01

In the first decade following the Second World War, Knoll International, a renowned American-based producer of International Style furniture, entered the western European market. It did so by selling production licenses to local furniture companies. One of them was De Coene, a Flemish family

Religiosidad e identidad en San Francisco de Campeche. Siglos XVI y XVII

OpenAIRE

Rocher Salas, Adriana Delfina

2006-01-01

This study examines the problems concomitant to the development of a common identity among the Spanish settlers of San Francisco de Campeche during the Colonial period, with focus on the role played by religious elements in the shaping of this identity – in particular, the cult to the saints. An analysis of factors such as the characteristics of the saints in the neighborhood and local associations; processes of cult adoption, adaptation or dismissal; as well as the participation of the ...

Weathering During Glacial-Interglacial Cycles Based on Pb Isotopes at Orphan Knoll, NW Atlantic

Science.gov (United States)

Flynn, S. N.; Martin, E. E.

2017-12-01

Seawater Pb isotopes extracted from FeMn oxyhydroxide coatings on deep sea sediments preserve a record of regional variations in continental weathering intensity. Crocket et al. (2012) documented a distinct increase in seawater Pb isotopes across Termination I (TI) at IODP Sites U1302/03 on Orphan Knoll in the NW Atlantic which they attributed to an increase in weathering intensity associated with ice sheet retreat. Deglaciation during Termination II (TII) was more rapid than TI due to higher insolation forcing and elevated CO2 levels. This rapid warming followed Heinrich Stadial 11 (HS11) cooling and circulation changes, but was not interrupted by a Younger Dryas-type reversal in warming. In this study, Pb isotopic data from leachates of the Sites U1302/03 are used to test whether changes in weathering are a feature of terminations and whether differences in the character of the termination translate to differences in the weathering response. We analyzed the clay/silt fraction to minimize preformed FeMn oxyhydroxides associated with IRD. All three Pb isotopic systems display similar patterns. Seawater 206Pb/204Pb values are 19.5 during MIS 6, reach a minimum of 18.7 during HS11, increase in < 1 ky to 20.6 in MIS 5e, and then vary between 19.9 - 20.5 across MIS 5e-d. In comparison to the TI study (Crocket et al., 2009), the TII HS is defined by a minimum in Pb isotopes that suggests suppressed chemical weathering during cooling and ice sheet advance. The increase in 206Pb/204Pb during TII indicates a rapid increase in weathering at high latitudes following glacial retreat. This result is consistent with a negative shift in ɛNd values during TII observed farther south on Bermuda Rise and interpreted as increased weathering of old continental material (Deaney et al. 2017). Future research on TII at Orphan Knoll includes analyses of detrital Pb isotopes to isolate the impact of changes in source material versus weathering intensity on seawater Pb isotopes, and

Appendicularian distribution and diversity in the southern Gulf of Mexico Distribución y diversidad de apendicularias en el sur del golfo de México

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César Flores-Coto

2010-04-01

Full Text Available The diversity and distribution of appendicularians on the continental shelf and upper part of the oceanic sea in the southern Gulf of Mexico is analyzed here for the first time. Samples were collected in September 2003 using a fine mesh net. Twenty species were identified, of which Fritillaria venusta and Pelagopleura oppressa are first records for the Gulf of Mexico. Oikopleura species occur throughout the area, with greatest abundances in the upwelling waters of the inner shelf off Yucatán and Campeche. The greatest abundances of Fritillaria species and of the other genera were recorded in the mid, outer shelf, and oceanic areas of Campeche and Tabasco that are influenced by continental water discharges and an oceanic gyre. Diversity and abundance varied in differing directions, with high abundance and low diversity characterizing the costal areas and low abundance and high diversity in the mid, outer shelf, and oceanic areas. The distribution of appendicularian species appears to be influenced by upwelling currents, gyres, water column depth, continental water discharges, salinity, and temperature. However, it could be assumed that the reasons behind these physical environmental factors include the food supply, a short life cycle, and high reproductive efficiency, factors that are commonly associated with distribution.Se analiza por primera vez la diversidad y distribución de las apendicularias en la capa superficial de la columna de agua de la plataforma continental del sur del Golfo de México. Las muestra se recolectaron en septiembre de 2003 usando una malla fina- Se identificaron 22 especies de las cuales Fritillaria venusta y Pelagopleura opresa tienen aquí su primer registro para el Golfo de México. Las especies de Oikopleura ocurrieron en toda el área con sus mayores abundancias en aguas de surgencia que corren sobre la plataforma de Yucatán y Campeche. La mayor abundancia de las especies de Fritillaria y de los otros g

Registro de pecarí de labios blancos (Tayassu pecari en la región de la laguna de Términos, Campeche, México White lipped pecaries (Tayassu pecari recorded in the area of Términos Lagoon Campeche, México

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Mircea G. Hidalgo-Mihart

2012-09-01

Full Text Available Se registró fotográficamente al menos un grupo de pecaries de labios blancos (Tayassu pecari en la Selva La Montaña, al suroeste del área de Protección de Flora y Fauna Silvestre Laguna de Términos, Campeche, México. El registro se realizó utilizando trampas cámara. La presencia de esta especie muestra la importancia que tiene la región Selva La Montaña para la conservación de la biodiversidad, especialmente para las especies protegidas.We report at least one group of white lipped peccaries (Tayassu pecari in Selva La Montaña located in the southwestern portion of the Términos Lagoon Flora and Fauna Protection Area, Campeche, Mexico. The record was obtained using camera traps. The presence of this species in the area shows the importance of the region for biodiversity conservation, particularly for protected species.

Impact of commercial farming on household reproductive strategies in Calakmul, Campeche, Mexico.

Science.gov (United States)

Gurri, Francisco D; Ortega-Muñoz, Allan

2015-01-01

The purpose of this study was to determine if commercial agriculture can lead to changes in peasant reproductive strategies in migrant agriculturalists from Calakmul, Campeche, Mexico. The reproductive histories of 746 women from Calakmul, Campeche, Mexico were collected. The sample was first divided into women who had reproduced within or outside of Calakmul (RC and RO, respectively) and these were further subdivided into those who lived in households practicing subsistence agriculture and those who turned agriculture into a business (Household Subsistence Agricultural Strategy (HSA) and Household Commercial Agricultural Strategy (HCA), respectively). Age-specific fertility rate (ASFR) differences were compared between strategies and place of reproduction. Comparisons between interbirth interval and age at which desired fertility was reached were done with a Kaplan-Meier life table-based statistic. In both strategies, RC women increased ASFRs by reducing age at first birth, and HSA-RC women also reduced interbirth intervals. HCA women had lower ASFRs than HSA women. The latter had a natural fertility pattern while the former expressed a desire to stop reproducing at a younger age. HCA-RC women showed important fertility reductions after age 25 and HCA-RO women after age 30. Fertility reductions in households that practice commercial versus those that practice subsistence agriculture were significant. Also, a "frontier" effect was observed that increased fertility over all, but HCA households were not as influenced by it. © 2015 Wiley Periodicals, Inc.

Fouling communities and degradation of archeological metals in the coastal sea of the Southwestern Gulf of Mexico.

Science.gov (United States)

López Garrido, Pedro H; González-Sánchez, J; Escobar Briones, Elva

2015-01-01

Corrosion and biofouling phenomena of cast iron and brass were evaluated under natural conditions to determine the degradation process of archeological artifacts. Field exposure studies of experimental materials were conducted over 15 months at an offshore position in the sea of Campeche in the Gulf of Mexico. Corrosion was determined by gravimetric measurements. The community structure of the benthic assemblage inhabiting the surfaces of both materials was evaluated. A total of 53 species was identified. The community in both cases was composed of a small number of species. Encrusting, attached and erect life forms were dominant on iron. Attached life forms were dominant on brass. Biofouling produced a decrease in the weight loss measurements of cast iron samples. Biofouling provided a beneficial factor for in situ preservation of iron archeological artifacts in wreck sites.

Secuencia constructiva de las plazas en el Grupo Principal de El Palmar, Campeche, México Constructive Sequence of Plazas in the Main Group of El Palmar, Campeche, México

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Kenichiro Tsukamoto

2012-01-01

Full Text Available La ubicación y dimensión de los espacios abiertos fueron aspectos considerados al planificar las ciudades de las Tierras Bajas Mayas en el periodo prehispánico. Las plazas eran los espacios políticos donde las élites gobernantes legitimaban a sus autoridades y manifestaban a otros participantes sus capacidades para comunicarse con los ancestros o deidades. Este trabajo se centra en la secuencia constructiva de ocho plazas en el Grupo Principal del sitio arqueológico de El Palmar, Campeche, México. Los resultados obtenidos durante las temporadas de campo en el 2007 y el 2009 indican que las grandes plazas fueron construidas durante la segunda mitad del Clásico Temprano (400-600 d.C. y que en ellas se celebraron ceremonias públicas inscritas en los monumentos conmemorativos.The location and dimension of open spaces were important aspects involved in Maya Lowlands planning during the prehispanic period. Plazas were political spaces in which ruling elites legitimated their authorities and manifested to other participants their capacities of communication with ancestors or deities. This paper focuses on the construction sequence of eight plazas at the Main Group of El Palmar, Campeche, Mexico. The results recovered from the 2007 and 2009 fieldwork seasons indicate that large plazas were build during the second part of the Early Classic period (400-600 AD, with the erection of commemorative monuments narrating public ceremonies.

Pliocene granodioritic knoll with continental crust affinities discovered in the intra-oceanic Izu-Bonin-Mariana Arc: Syntectonic granitic crust formation during back-arc rifting

Science.gov (United States)

Tani, Kenichiro; Dunkley, Daniel J.; Chang, Qing; Nichols, Alexander R. L.; Shukuno, Hiroshi; Hirahara, Yuka; Ishizuka, Osamu; Arima, Makoto; Tatsumi, Yoshiyuki

2015-08-01

A widely held hypothesis is that modern continental crust of an intermediate (i.e. andesitic) bulk composition forms at intra-oceanic arcs through subduction zone magmatism. However, there is a critical paradox in this hypothesis: to date, the dominant granitic rocks discovered in these arcs are tonalite, rocks that are significantly depleted in incompatible (i.e. magma-preferred) elements and do not geochemically and petrographically represent those of the continents. Here we describe the discovery of a submarine knoll, the Daisan-West Sumisu Knoll, situated in the rear-arc region of the intra-oceanic Izu-Bonin-Mariana Arc. Remotely-operated vehicle surveys reveal that this knoll is made up entirely of a 2.6 million year old porphyritic to equigranular granodiorite intrusion with a geochemical signature typical of continental crust. We present a model of granodiorite magma formation that involves partial remelting of enriched mafic rear-arc crust during the initial phase of back-arc rifting, which is supported by the preservation of relic cores inherited from initial rear-arc source rocks within magmatic zircon crystals. The strong extensional tectonic regime at the time of intrusion may have allowed the granodioritic magma to be emplaced at an extremely shallow level, with later erosion of sediment and volcanic covers exposing the internal plutonic body. These findings suggest that rear-arc regions could be the potential sites of continental crust formation in intra-oceanic convergent margins.

Early African Diaspora in colonial Campeche, Mexico: strontium isotopic evidence.

Science.gov (United States)

Price, T Douglas; Tiesler, Vera; Burton, James H

2006-08-01

Construction activities around Campeche's central park led to the discovery of an early colonial church and an associated burial ground, in use from the mid-16th century AD to the late 17th century. Remains of some individuals revealed dental mutilations characteristic of West Africa. Analyses of strontium isotopes of dental enamel from these individuals yielded unusually high (87)Sr/(86)Sr ratios, inconsistent with an origin in Mesoamerica, but consistent with an origin in West Africa in terrain underlain by the West Africa Craton, perhaps near the port of Elmina, a principal source of slaves for the New World during the 16th century. These individuals likely represent some of the earliest representatives of the African Diaspora in the Americas.

Petroleum-influenced beach sediments of the campeche bank, Mexico: Diversity and bacterial community structure assessment

Energy Technology Data Exchange (ETDEWEB)

Rosano-Hernandez, M. C.; Ramirez-Saad, H.; Fernandez-Linares, L.; Xoconostle, B.

2009-07-01

In Mexican, either spilled or seeped out petroleum impacts nearly 300 km of the beach between Dos Bocas (Tabasco State) to Champoton town (Campeche State), where between 9 to exceptionally 9 to exceptionally 300 tonnes of oil as tar balls have been measured. This study was focused to explore, for the first time, the bacterial diversity and community structure ({alpha}-diversity)- in a kilometric scale on petroleum influenced sediments of 100 km of sandy beach. (Author)

Petroleum-influenced beach sediments of the campeche bank, Mexico: Diversity and bacterial community structure assessment

International Nuclear Information System (INIS)

Rosano-Hernandez, M. C.; Ramirez-Saad, H.; Fernandez-Linares, L.; Xoconostle, B.

2009-01-01

In Mexican, either spilled or seeped out petroleum impacts nearly 300 km of the beach between Dos Bocas (Tabasco State) to Champoton town (Campeche State), where between 9 to exceptionally 9 to exceptionally 300 tonnes of oil as tar balls have been measured. This study was focused to explore, for the first time, the bacterial diversity and community structure (α-diversity)- in a kilometric scale on petroleum influenced sediments of 100 km of sandy beach. (Author)

Variabilidad espacial y temporal de la abundancia y diversidad de la comunidad de peces en la costa de Campeche, México Spatial and temporal variability of fish community abundance and diversity off the coast of Campeche, Mexico

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Luis Amado Ayala-Pérez

2012-03-01

Full Text Available La comunidad de peces en el sur del golfo de México es abundante y diversa y sus componentes se encuentran afectados por la captura incidental de la pesquería del camarón siete barbas. El presente trabajo describe y analiza los patrones de variación espacial y temporal de la abundancia y diversidad de la comunidad de peces, identificando las especies con dominio ecológico. Los muestreos se realizaron mensualmente entre febrero 2006 y enero 2007 en 37 sitios localizados desde la desembocadura del sistema Grijalva-Usumacinta hasta la desembocadura del sistema Chumpam-Balchacah al interior de la Laguna de Términos, en el estado de Campeche al sur del golfo de México. Se realizaron 444 arrastres experimentales con una red de prueba camaronera y se capturaron 26.386 peces con un peso conjunto de 407,1 kg. Se identificaron 94 especies agrupadas en 65 géneros y 38 familias. La abundancia y diversidad de la comunidad de peces se analizó en escalas espacial y temporal en términos de densidad (ind m-2, biomasa (g m-2, peso promedio (g ind-1, índice de diversidad (H'n, riqueza de especies (DMg e índice de equidad (J'. En cuanto a abundancia se distinguieron los altos valores registrados en agosto y septiembre, en sitios cercanos a las desembocaduras de los sistemas Grijalva-Usumacinta y Palizada-Del Este. La especie más importante en términos de abundancia fue el bagre Cathorops melanopus. Los intervalos de variación de los índices de diversidad en escala espacial fueron: H'n = 0,5-2,8 bits; Dmg = 2,6-5,3 sp. ind-1 y J'= 0,1-0,8 bits. En escala temporal los intervalos fueron H'n = 1,8-2,6 bits; Dmg = 5,1-6,7 sp. ind-1 y J'= 0,4-0,6 bits. Se identificaron nueve especies dominantes con 16.840 individuos y un peso conjunto de 278,5 kg, equivalente al 63,8% de la captura total.The fish community of the southern Gulf of Mexico is abundant and diverse, and its components are affected by the bycatch of the seabob shrimp fishery. The spatial and

Religiosidad e identidad en San Francisco de Campeche. Siglos XVI y XVII

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Rocher Salas, Adriana Delfina

2006-12-01

Full Text Available This study examines the problems concomitant to the development of a common identity among the Spanish settlers of San Francisco de Campeche during the Colonial period, with focus on the role played by religious elements in the shaping of this identity – in particular, the cult to the saints. An analysis of factors such as the characteristics of the saints in the neighborhood and local associations; processes of cult adoption, adaptation or dismissal; as well as the participation of the different local sectors in promoting the to their respective saints will be presented. This analysis will take into consideration the conflictive relationship between Spanish settlers and native people in Yucatán, a situation that prevented the using of aboriginal cultural elements in the shaping of a new identity

Este trabajo estudia los problemas que acompañaron la gestación de una identidad propia y común para los residentes hispanos de la villa y puerto de San Francisco de Campeche durante el período colonial y la participación de elementos religiosos, particularmente el culto a los santos patronos, en el proceso. Teniendo como telón de fondo la peculiaridad de la región yucateca, donde una conflictiva relación entre españoles e indígenas impidió la utilización de elementos culturales prehispánicos en la formación de una conciencia identitaria, se analizan diversos factores, como las características de los santos tutelares de los barrios y de algunas corporaciones locales, los procesos de adopción, adaptación u olvido de sus cultos por parte del vecindario porteño y la participación de los diferentes sectores locales en la promoción de sus santos patronos.

[Demography of Caulerpa paspaloides var. wudermanni (Bryopsidales: Caulerpaceae) in the coastal zone of Campeche, México].

Science.gov (United States)

Fuentes, Sergio Armando; Gallegos, Margarita E; Mandujano, María C

2014-06-01

Demography of Caulerpa paspaloides var. wudermanni (Bryopsidales: Caulerpaceae) in the coastal zone of Campeche, México. The subaquatic vegetation of Los Petenes, Campeche, Mexico, stands out due to its considerable floristic diversity, composed of a great variety of sea grasses and several species of the genus Caulerpa sp. This is a genus of ecological relevance, with the invasive species in the Mediterranean, with negative impact on several native sub-aquatic plants; nevertheless, little is known about the demography and population dynamics of Caulerpa species and their contribution to food webs. Thus the main objective of this study was to describe the demographics of Caulerpa paspaloides var. wudermanni, using the number of stolons, complete and incomplete fronds, the diameter of the stolons and the biomass. The information was used to determine the growth rate (lambda) of this species. The study was conducted in the Biosphere Reserve of Los Petenes, which is located in the Northwest of the state of Campeche. The submerged aquatic vegetation (SAV) in the Petenes Biosphere consists of monospecific and mixed populations of seagrass species (Thalassia testudinum, Halodule wrightii and Syringodium filiforme). Although chlorophytes, brown algae and red algae, are fundamental elements in the specific composition of the SAV in Petenes, several species of Caulerpa are prominent because of their coverage and abundance. In May and June of 2010, significant differences in the quantity of stolons, their diameter, incomplete and complete fronds, and the size of the stolons and rhizomes, were observed. In 2010, the finite population growth rate (lambda) was 2.38 +/- 0.1571 for individuals and 1.20 +/- 0.1356 for the population, and in 2011 the values of lambda were 1.80 +/- 0.3608 and 1.35 +/- 0.1571, respectively. From these results it can be concluded that the population is growing; however, growth is controlled by biotic and abiotic factors. Despite there was no apparent

La legitimación de la realeza entre mayas del Preclásico Tardío. Los mascarones de El Tigre, Campeche Legitimizing royalty among Late Preclassic Maya. The masks from El Tigre-Campeche

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Ernesto Vargas Pacheco

2010-01-01

Full Text Available En el arte monumental del periodo Clásico maya la imagen del señor ocupaba el sitio principal y todas las demás imágenes un lugar secundario. Con este trabajo se quiere demostrar que los soberanos mayas ya en el Preclásico Tardío, o desde antes, usaron la arquitectura para reproducir la topografía del universo y se sirvieron de los mascarones para transmitir la condición divina de sus antepasados, de sus dioses y la suya propia. En El Tigre, Campeche, se han explorado varios mascarones de estuco del Preclásico Tardío, que representan rostros humanos, los cuales bien podrían identificarse como ancestros: antepasados de gobernantes que pretenden divinizarlos para así legitimizar la realeza maya.The images of Maya dignitaries take the most important places in monumental art during Classic period, and all other representations occupy a secondary position in that context. This paper pretends to demonstrate that Maya kings tried to duplicate their conception of the Universe on civic architecture since Preclassic period, or even before; they used huge mask representations to transmit the sacred condition of their ancestors, their gods and their selves. At El Tigre site, in Campeche, have been explored several stucco masks of Late Preclassic date, showing human faces that may represent ancestors of the kings who tried to deify them in order to legitimate Maya royalty.

Detection of reactive canines to Leptospira in Campeche City, Mexico Detección de caninos reaccionantes a Leptospira en la ciudad de Campeche, México

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Selene del C Blum Domínguez

2013-03-01

Full Text Available Leptospira reactivity in stray and household dogs in Campeche as well as associated risk factors to the seropositivity in household dogs have been herein determined. The survey included 323 dogs, 142 of which were stray dogs and 181 household dogs. Nine Leptospira interrogans serovars were tested by the microagglutination test. Reactivity was 21.3 % (69/323, 17.2 % corresponded to household dogs and 26.7 % to stray dogs. Leptospira Canicola (29 %, Leptospira Hardjo (22.58 %, and Leptospira Icterohaemorrhagiae (16.12 % were the most common serovars reacting against the serum of household animals, while Leptospira Canicola (15.78 %, Leptospira Icterohaemorrhagiae (13.15 %, and Leptospira Pomona (7.89 % were those reacting in stray dogs. Results showed that all dogs have been in contact with different Leptospira serovars and outdoor exposure is the main infection risk factor.

Una pasión por la antigüedad: la colección arqueológica de don Florentino Gimeno en Campeche durante el siglo XIX A passion for antiquity: Don Florentino Gimeno's 19th Century archaeological collection in Campeche

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Lynneth S. Lowe

2010-01-01

Full Text Available Durante la segunda mitad del siglo XIX, don Florentino Gimeno, un comerciante español establecido en Campeche, logró conformar una impresionante colección de más de 12 000 piezas arqueológicas, la cual reflejaba una profunda pasión por el pasado prehispánico y sus evidencias materiales. El análisis de sus catálogos proporciona información invaluable acerca de la procedencia y características de muchas de las piezas -que procedían fundamentalmente de sitios de la región-, y nos permite apreciar también sus afanes por desarrollar una clasificación tipológica y funcional de acuerdo con los criterios intelectuales en boga. Asimismo, los datos registrados en diversos documentos y crónicas indican que su tienda-museo se convirtió en punto de referencia para viajeros y exploradores que visitaron Campeche durante aquellos años, como Brasseur de Bourbourg o Carl Hermann Berendt, entre otros. Su interés en reunir no solamente objetos arqueológicos, sino también documentos históricos, fue también muy apreciado por notables personajes locales, como los gobernadores Pablo García y Joaquín Baranda. En este artículo exploramos las distintas facetas de este incansable coleccionista, e intentamos arrojar luz sobre sus atinadas -y sorprendentemente objetivas- interpretaciones de la cultura material antigua. Finalmente, intentamos rastrear el paradero actual de su acervo.During the second half of the nineteenth century, Florentino Gimeno, a Spanish shopkeeper residing in the city of Campeche, amassed an impressive collection of over 12,000 archaeological artifacts, reflecting his profound passion for the pre-Hispanic past and its material evidence. His handwritten catalogs provide invaluable information regarding the provenience and characteristics of many of the objects that were found in the region, and the extensive lists also show how he developed a typological and functional classification for his collection that corresponded to the

Can hydrocarbons entrapped in seep carbonates serve as gas geochemistry recorder?

Science.gov (United States)

Blumenberg, Martin; Pape, Thomas; Seifert, Richard; Bohrmann, Gerhard; Schlömer, Stefan

2018-04-01

The geochemistry of seep gases is useful for an understanding of the local petroleum system. Here it was tested whether individual light hydrocarbons in seep gases are representatively entrapped in authigenic carbonates that formed near active seep sites. If applicable, it would be possible to extract geochemical information not only on the origin but also on the thermal maturity of the hydrocarbon source rocks from the gases entrapped in carbonates in the past. Respective data could be used for a better understanding of paleoenvironments and might directly serve as calibration point for, amongst others, petroleum system modeling. For this approach, (sub)-recent seep carbonates from the Black Sea (Paleodnjepr region and Batumi seep area), two sites of the Campeche Knoll region in the Gulf of Mexico, and the Venere mud volcano (Mediterranean Sea) were selected. These seep carbonates derive from sites for which geochemical data on the currently seeping gases exist. During treatment with phosphoric acid, methane and higher hydrocarbons were released from all carbonates, but in low concentrations. Compositional studies demonstrate that the ratio of methane to the sum of higher hydrocarbons (C1/(C2+C3)) is (partly strongly) positively biased in the entrapped gas fraction. δ13C values of C1 were determined for all samples and, for the samples from the Gulf of Mexico and the Mediterranean Sea, also of C2 and C3. The present dataset from six seep sites indicates that information on the seeped methane can be—although with a scatter of several permil—recorded in seep carbonate matrices, but other valuable information like the composition and δ13C of ethane and propane appears to be modified or lost during, for example, enclosure or at an early stage of diagenesis.

Acute survivorship of the deep-sea coral Lophelia pertusa from the Gulf of Mexico under acidification, warming, and deoxygenation

Science.gov (United States)

Lunden, Jay J.; McNicholl, Conall G.; Sears, Christopher R.; Morrison, Cheryl L.; Cordes, Erik E.

2014-01-01

Changing global climate due to anthropogenic emissions of CO2 are driving rapid changes in the physical and chemical environment of the oceans via warming, deoxygenation, and acidification. These changes may threaten the persistence of species and populations across a range of latitudes and depths, including species that support diverse biological communities that in turn provide ecological stability and support commercial interests. Worldwide, but particularly in the North Atlantic and deep Gulf of Mexico, Lophelia pertusa forms expansive reefs that support biological communities whose diversity rivals that of tropical coral reefs. In this study, L. pertusa colonies were collected from the Viosca Knoll region in the Gulf of Mexico (390 to 450 m depth), genotyped using microsatellite markers, and exposed to a series of treatments testing survivorship responses to acidification, warming, and deoxygenation. All coral nubbins survived the acidification scenarios tested, between pH of 7.67 and 7.90 and aragonite saturation states of 0.92 and 1.47. However, net calcification generally declined with respect to pH, though a disparate response was evident where select individuals net calcified and others exhibited net dissolution near a saturation state of 1. Warming and deoxygenation both had negative effects on survivorship, with up to 100% mortality observed at temperatures above 14°C and oxygen concentrations of approximately 1.5 ml· l−1. These results suggest that, over the short-term, climate change and OA may negatively impact L. pertusa in the Gulf of Mexico, though the potential for acclimation and the effects of genetic background should be considered in future research.

The acoustic repertoire of bottlenose dolphins (Tursiops truncatus) from the southern Gulf of Mexico

Science.gov (United States)

Bazua-Duran, Carmen

2005-04-01

Bottlenose dolphins live in a variety of habitats of the world's oceans using their acoustic repertoire to communicate and inspect their environment. This work investigates the acoustic repertoire of bottlenose dolphins that inhabit a coastal lagoon of the southern Gulf of Mexico, the Laguna de Terminos and how it may relate to the dolphins' general behavioral state and herd size, and to the general characteristics of the habitat, such as visibility, depth, and sea state. Preliminary results show that bottlenose dolphins produce by far more clicks than whistles in all behavioral states (feeding, resting, social, and travel) and herd sizes, which may correlate with the decreased visibility and shallow depth of the Laguna de Terminos. Additionally, silence was found during all behavioral states, but very seldom in herds of large size. These preliminary results suggest that bottlenose dolphins are choosing when and where to produce their phonations. Therefore, more detailed studies are needed to understand how these animals are using their acoustic sense to communicate and inspect their environment. [Work supported by CONACyT-Gobierno Edo. de Campeche and PAPIIT, UNAM.

Comparison of small mammal prevalence of Leishmania (Leishmania) mexicana in five foci of cutaneous leishmaniasis in the State of Campeche, Mexico.

Science.gov (United States)

Van Wynsberghe, N R; Canto-Lara, S B; Sosa-Bibiano, E I; Rivero-Cárdenas, N A; Andrade-Narváez, F J

2009-01-01

In the Yucatan Peninsula of Mexico, 95% of the human cases of Cutaneous Leishmaniasis are caused by Leishmania (Leishmania) mexicana with an incidence rate of 5.08 per 100,000 inhabitants. Transmission is limited to the winter months (November to March). One study on wild rodents has incriminated Ototylomys phyllotis and Peromyscus yucatanicus as primary reservoirs of L. (L.) mexicana in the focus of La Libertad, Campeche. In the present study, the prevalence of both infection and disease caused by L. (L.) mexicana in small terrestrial mammals were documented during five transmission seasons (1994-2004) in five foci of Leishmaniasis in the state of Campeche. Foci separated by only 100 km, with similar relative abundances of small mammals, were found to differ significantly in their prevalence of both symptoms and infection. Transmission rates and reservoir species seemed to change in space as well as in time which limited the implementation of effective control measures of the disease even in a small endemic area such as the south of the Yucatan Peninsula.

National Energy Policy: Report of the National Energy Policy Development Group

Science.gov (United States)

2001-05-01

and a prop- ping agent (usually sand) are pumped into the reservoir rock, widening natural fractures to provide paths for the gas to migrate to the...Oil Producing Prospective Region Veracruz Bahia de Campeche Macuspana Gulf of California Mexico City • Mazatlan Basin Chapter 8 • Strengthening

On the annual cycle of the sea surface temperature and the mixed layer depth in the Gulf of Mexico

Energy Technology Data Exchange (ETDEWEB)

Mendoza, V.M.; Villanueva, E.E.; Adem, J. [Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico, UNAM, Mexico, D.F. (Mexico)

2005-04-01

Using an integrated mixed layer model, we carry out a simulation of the annual cycle of the sea surface temperature (SST) and of the mixed layer depth (MLD) in the Gulf of Mexico. We also compute the annual cycle of the entrainment velocity in the deepest region of the Gulf of Mexico. The model is based on the thermal energy equation and on an equation of mechanical and thermal energy balance based on the Kraus-Turner theory; both equation are coupled and are vertically integrated in the mixed layer. The model equations are solved in a uniform grid of 25 km in the Gulf of Mexico, the northwestern region of the Caribbean Sea and the eastern coast of Florida. The surface ocean current velocity and the atmospheric variables are prescribed in the model using observed values. We show the importance of the Ekman pumping in the entrainment velocity. We found that the upwelling plays an important role in increasing the entrainment velocity, producing an important reduction in the SST and diminishing the depth of the mixed layer in the Campeche Bay. In the rest of the Gulf of Mexico the downwelling tends to reduce the entrainment velocity, increasing the SST and the MLD. Comparison of the computed annual cycle of the SST and the MLD with the corresponding observations reported by Robinson (1973) shows a good agreement. In the deepest region of the Gulf of Mexico, the photosynthetic pigment concentration data obtained from the Mexican Pacific Cd-Rom of environmental analysis shows significant correlation with the computed annual cycle of the computed entrainment velocity only in January, April, May, June and September. [Spanish] Usando un modelo integrado en la capa de mezcla hemos obtenido una simulacion del ciclo anual de la temperatura de la superficie del mar (SST), de la profundidad de la capa de mezcla (MLD) en el Golfo de Mexico, asi como el ciclo anual de la velocidad de penetracion vertical turbulenta a traves de la termoclina en la region mas profunda del golfo de

Correlation of Brunhes detrital-layer stratigraphy into the North Atlantic from Orphan Knoll (Labrador Sea)

Science.gov (United States)

Channell, J. E.; Hodell, D. A.; Romero, O. E.; Hillaire-Marcel, C.; de Vernal, A.; Stoner, J. S.; Mazaud, A.; Roehl, U.

2011-12-01

IODP Site U1302-U1303, on the SE flank of Orphan Knoll (Labrador Sea), has a record of detrital layers that extends through most of the Brunhes Chron. The age model is built by tandem matching of relative paleointensity (RPI) and oxygen isotope data (δ18O) from Neogloboquadrina pachyderma (sin.) to reference records, indicating a mean Brunhes sedimentation rate of 14 cm/kyr. Sedimentation back to marine isotope stage (MIS) 18 is characterized by detrital layers that are detected by higher than background gamma-ray attenuation (GRA) density, peaks in X-ray fluorescence (XRF) indicators for detrital carbonate (Ca/Sr) and detrital silicate (Si/Sr), an ice-rafted debris (IRD) proxy (>106 μm), magnetic susceptibility, and magnetic grain-size peaks. The age model enables correlation of Site U1302/03 to IODP Site U1308 (re-drill of DSDP Site 609) in the heart of the central Atlantic IRD belt where an age model and a similar set of detrital-layer proxies have already been derived. Ages of Heinrich layers H1, H2, H4, H5 and H6 are within ~2 kyr at the two sites (H0, H3 and H5a are not observed at Site U1308), and agree with previous work at Orphan Knoll within ~3 kyr. At Site U1308, Brunhes detrital layers are restricted to peak glacials and glacial terminations back to MIS16, however, these same proxies at Site U1302/03 indicate detrital layers distributed throughout the record in both glacial and most interglacial stages. At Site U1302/03, we distinguish Heinrich-type layers in glacial stages, which are associated with IRD (some of which have near-synchronous analogues at Site U1308), from detrital layers within interglacial stages manifested by multiple detrital layer proxies (including Ca/Sr) but usually not associated with IRD, that may be attributed to a distinct depositional process, namely drainage and debris-flow events funneled down the nearby NAMOC (North Atlantic Mid-Ocean Channel).

MONUMENTO JEROGLÍFICO MAYA DE XKOMBEC, CAMPECHE: UNA REVISIÓN (Maya Hieroglyphic Monument from Xkombec, Campeche: A Revision

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Philipp Galeev

2017-12-01

Full Text Available El reanálisis del Monumento 1 de Xkombec (Campeche, México, basado sobre su nueva documentación realizada en 2014 por los colaboradores del Proyecto Atlas Epigráfico de Yucatán, permite descartar la datación de esta inscripción en 866 d. C. y ubicarla a mediados del siglo VIII d. C., contemporánea de los monumentos de Xcalumkín y otros sitios cercanos del Puuc campechano. De acuerdo con el texto, la organización política de Xkombec era parecida a otros centros de Puuc. La ciudad contaba con su propia casa noble, cuyos miembros Xok Tun y B’ahlam eran de rango secundario y llevaban el título de b’ahkab y, probablemente, estaban relacionados con Xcalumkín. ENGLISH: Recent analysis of the epigraphy on Monument 1 from Xkombec indicates that the monument can be dated to A.D. 866, not to the mid-8th century as was previously argued. This new date marks Monument 1 as contemporary to the monuments at Xcalumkin and other neighboring Puuc sites. According to the text contained on Monument 1, political organization of Xkombec was similar to that of other Puuc centers. The association between these two centers may indicate that members of the noble house at Xkombec (Xok Tun and his son B’ahlam may have been related to the nobility of Xcalumkin.

Acute survivorship of the deep-sea coral Lophelia pertusa from the Gulf of Mexico under acidification, warming, and deoxygenation

Directory of Open Access Journals (Sweden)

Jay J Lunden

2014-12-01

Full Text Available Changing global climate due to anthropogenic emissions of CO2 are driving rapid changes in the physical and chemical environment of the oceans via warming, deoxygenation, and acidification. These changes may threaten the persistence of species and populations across a range of latitudes and depths, including species that support diverse biological communities that in turn provide ecological stability and support commercial interests. Worldwide, but particularly in the North Atlantic and deep Gulf of Mexico, Lophelia pertusa forms expansive reefs that support biological communities whose diversity rivals that of tropical coral reefs. In this study, L. pertusa colonies were collected from the Viosca Knoll region in the Gulf of Mexico (390 to 450 m depth, genotyped using microsatellite markers, and exposed to a series of treatments testing survivorship responses to acidification, warming, and deoxygenation. All coral nubbins survived the acidification scenarios tested, between pH of 7.67 and 7.90 and aragonite saturation states of 0.92 and 1.47. However, calcification generally declined with respect to pH, though a disparate response was evident where select individuals net calcified and others exhibited net dissolution near a saturation state of 1. Warming and deoxygenation both had negative effects on survivorship, with up to 100% mortality observed at temperatures above 14ºC and oxygen concentrations of approximately 1.5 ml·l-1. These results suggest that, over the short-term, climate change and OA may negatively impact L. pertusa in the Gulf of Mexico, though the potential for acclimation and the effects of genetic background should be considered in future research.

Assessing the importance of four sandfly species (Diptera: Psychodidae) as vectors of Leishmania mexicana in Campeche, Mexico.

Science.gov (United States)

Pech-May, A; Peraza-Herrera, G; Moo-Llanes, D A; Escobedo-Ortegón, J; Berzunza-Cruz, M; Becker-Fauser, I; Montes DE Oca-Aguilar, A C; Rebollar-Téllez, E A

2016-09-01

Localized cutaneous leishmaniasis represents a public health problem in many areas of Mexico, especially in the Yucatan Peninsula. An understanding of vector ecology and bionomics is of great importance in evaluations of the transmission dynamics of Leishmania parasites. A field study was conducted in the county of Calakmul, state of Campeche, during the period from November 2006 to March 2007. Phlebotomine sandfly vectors were sampled using Centers for Disease Control light traps, baited Disney traps and Shannon traps. A total of 3374 specimens were captured in the two villages of Once de Mayo (93.8%) and Arroyo Negro (6.1%). In Once de Mayo, the most abundant species were Psathyromyia shannoni, Lutzomyia cruciata, Bichromomyia olmeca olmeca and Psychodopygus panamensis (all: Diptera: Psychodidae). The Shannon trap was by far the most efficient method of collection. The infection rate, as determined by Leishmania mexicana-specific polymerase chain reaction, was 0.3% in Once de Mayo and infected sandflies included Psy. panamensis, B. o. olmeca and Psa. shannoni. There were significant differences in human biting rates across sandfly species and month of sampling. Ecological niche modelling analyses showed an overall overlap of 39.1% for the four species in the whole state of Campeche. In addition, the finding of nine vector-reservoir pairs indicates a potential interaction. The roles of the various sandfly vectors in Calakmul are discussed. © 2016 The Royal Entomological Society.

Action of the surge in the stability of the marine bed in the sounding of Campeche, Mexico; Accion del oleaje en la estabilidad del lecho marino en la sonda de Campeche, Mexico

Energy Technology Data Exchange (ETDEWEB)

Mendoza Baldwin, E.G.; Silva Casarin, R. [Instituto de Ingenieria, UNAM, (Mexico); Salazar Carrillo, E.E. [Instituto Mexicano del Petroleo (Mexico)

2004-12-01

Among the phenomena that must be taken into account while designing and constructing coastal structures, the wave-induced soil response has become a very important issue. One reason for this growing interest is that many structures have been reportedly failed because of seabed instability rather than design or construction deficiencies. In this paper we present the application to Sonda de Campeche, Mexico of an analytical model for a porous seabed of finite thickness, h, subject a 3D short crested wave system. This exact solution gives explicit expressions for the pore pressure and effective stresses under. [Spanish] La seguridad de las actividades relacionadas con el litoral depende, en gran medida, del correcto funcionamiento de las estructuras de operacion y proteccion, el diseno de las cuales, a su vez, requiere de un conocimiento lo mas completo posible, tanto de las solicitaciones como del comportamiento del entorno en el que seran construidas. Como respuesta a dichas necesidades, en este trabajo se presenta la aplicacion de un modelo en tres dimensiones con el que se puede representar la respuesta del lecho marino, considerando la existencia de un estrato poroso de espesor finito ante la accion de un sistema de ondas progresivas de cresta corta, el cual es de especial utilidad para el diseno y tendido de lineas submarinas. Dentro de las bondades del modelo se cuenta con la posibilidad de varias las condiciones del tipo de suelo (cohesivo, arenoso o mixto), grado de saturacion, angulo de incidencia del oleaje y espesor del estrato poroso. El modelo tridimensional es alimentado con datos de oleaje y tipo de suelo de la bahia de Campeche, Mexico, con los que se analizan las distribuciones verticales de los esfuerzos y la presion de poro inducidos. Finalmente, se realiza un estudio de inestabilidad del lecho marino para la misma bahia, comparando los resultados del modelo con los de sondeos en campo.

Comparison of small mammal prevalence of Leishmania (Leishmania mexicana in five foci of cutaneous leishmaniasis in the State of Campeche, Mexico Comparación de las prevalencias de Leishmania (Leishmania mexicana en mamíferos pequeños en cinco focos de leishmaniosis cutánea en el estado de Campeche, México

Directory of Open Access Journals (Sweden)

N.R. Van Wynsberghe

2009-04-01

Full Text Available In the Yucatan Peninsula of Mexico, 95% of the human cases of Cutaneous Leishmaniasis are caused by Leishmania (Leishmania mexicana with an incidence rate of 5.08 per 100,000 inhabitants. Transmission is limited to the winter months (November to March. One study on wild rodents has incriminated Ototylomys phyllotis and Peromyscus yucatanicus as primary reservoirs of L. (L. mexicana in the focus of La Libertad, Campeche. In the present study, the prevalence of both infection and disease caused by L. (L. mexicana in small terrestrial mammals were documented during five transmission seasons (1994-2004 in five foci of Leishmaniasis in the state of Campeche. Foci separated by only 100 km, with similar relative abundances of small mammals, were found to differ significantly in their prevalence of both symptoms and infection. Transmission rates and reservoir species seemed to change in space as well as in time which limited the implementation of effective control measures of the disease even in a small endemic area such as the south of the Yucatan Peninsula.En la Península de Yucatán, México, la Leishmaniosis Cutánea es causada por Leishmania (L. mexicana en 95% de los casos humanos, con una incidencia de 5.08% por cada 100,000 habitantes. El ciclo de transmisión se limita a la estación de invierno (noviembre- marzo. Un estudio de mamíferos silvestres incrimina a Ototylomys phyllotis y Peromyscus yucatanicus como reservorios primarios de L. (L. mexicana en el foco de infección de La Libertad, Campeche. En el presente estudio, se documenta la prevalencia de infección/enfermedad causada por L. (L. mexicana en pequeños mamíferos, durante cinco estaciones de transmisión (1994-2004 en cinco focos de CL del estado de Campeche. Los focos separados por solamente 100 km. de distancia, aún cuando tienen abundancias relativas de pequeños roedores similares, fueron significativamente diferentes en relación a la prevalencia de síntomas así como de

Afinidad ecológica y distribución actual de Primates (Cebidae en Campeche, México

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Eloísa Navarro Fernández

2003-06-01

Full Text Available Realizamos recorridos de campo durante la temporada de marzo a septiembre del 2000 para obtener la distribución actual de cébidos presentes en el estado de Campeche, México. Por medio de encuestas y observaciones directas, se determinó la distribución de Ateles geoffroyi yucatanensis, Alouatta pigra y se documentó por primera vez localidades en Campeche donde se encuentra Alouatta palliata mexicana. Se elaboraron mapas de distribución de las especies con la ayuda de los paquetes ArcInfo y ArcView por medio de la sobreposición de coberturas de vegetación, obtenidas en el Inventario Nacional Forestal (1995 y los puntos de registro obtenidos durante el trabajo de campo. En los mapas se presenta la distribución verificada y probable de cada especie. Con la ayuda de los atributos de dicho inventario se calcularon las áreas de distribución confiable resultando 22 736 km 2 para Alouatta sp. y 18 501 km 2 para A. g. yucatanensis. Se presenta la superficie ocupada por cada especie en los diferentes tipos de vegetación y el porcentaje respectivo, así como el porcentaje de ocupación de las especies en el territorio del Estado, para la discusión de las afinidades ecológicas. Para Alouatta, se corroboró su capacidad para soportar la presión de encontrase en ambientes perturbados ocasionados por la fragmentación del hábitat, al ser este ambiente el ocupado con mayor proporción por este género. En el caso de A. g. yucatanensis encontramos que presenta una mayor afinidad a los ambientes no perturbados.We carried out surveys realized field work from March to September 2000 to get the current distribution of Cebids in the state of Campeche, Mexico. Based on interviews and direct observations. We defined the distribution of Ateles geoffroyi yucatanensis and Alouatta pigra and we documented the first time localities where Allouata palliata is found in the state. We made distributional maps of each species using vegetation overlays from

[Ecological affinity and current distribution of primates (Cebidae) in Campeche, Mexico].

Science.gov (United States)

Navarro Fernández, Eloísa; Pozo de la Tijera, Carmen; Escobedo Cabrera, Enrique

2003-06-01

We carried out surveys realized field work from March to September 2000 to get the current distribution of Cebids in the state of Campeche, Mexico. Based on interviews and direct observations. We defined the distribution of Ateles geoffroyi yucatanensis and Alouatta pigra and we documented the first time localities where Allouata palliata is found in the state. We made distributional maps of each species using vegetation overlays from Inventario Nacional Forestal (Inv For) and each point documented during fieldwork. We presented the distribution of species according to confiability of the verified or expected data. Using the attributes table of Inv For, we calculated the areas of distribution which were 22,735 km2 for Alouatta sp. and 18,501 km2 for A. g. yucatanensis. We also presented the area occupied by each species according to vegetation types and the relative proportion of these vegetation types in the state. We confirmed the ability of Alouatta sp. to survive in disturbed environments produced by habitat fragmentation, and the affinity of A. g. yucatanesis to well preserved habitats.

Cambios morfológicos costeros en lsla del Carmen. Campeche, por el paso del huracán "Roxanne"

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José Luis Palacio-Prieto

1999-08-01

Full Text Available Based on the interpretation of vertical video images taken from an helicopter, a geornorphological survey of the coast of Isla del Carmen, Campeche, was made in connection with hurricane "Roxanne" Geomorphological processes and derived coastal fandforms are identified, which indicate a general receding trend of the coastline during the event, although some local accumulative features are recognized. The most affected areas correspond to ancient channels, today closed, reactivated during extraordinary storm events. Some conclusions area also drawn in relation to the use of video images as a tool for a rapid assessment and detection of damages to infrastructure.

Impacto de las estrategias de ingresos sobre la seguridad alimentaria en comunidades rurales Mayas del norte de Campeche

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Pat Fernández, Lucio A; Nahed Toral, José; Parra Vázquez, Manuel R; García Barrios, Luis; Nazar Beutelspacher, Austreberta; Bello Baltazar, Eduardo

2010-01-01

En este artículo se examina el efecto de las estrategias de ingresos sobre la suficiencia de consumo calórico en grupos domésticos (GD) mayas de Campeche, México. El análisis se basó en el enfoque de modos de vida y la información se obtuvo de una encuesta censal de hogares (N=237) en cuatro comunidades. Los resultados revelan que todos los GD tienen una estrategia de ingreso diversificada con una orientación claramente definida. El índice de seguridad calórica (ISC) es diferente (p

Las comunidades de helmintos del lenguado (Symphurus plagiusa en la costa de Campeche, México The helminth communities of tonguefish (Symphurus plagiusa of the Campeche coast, Mexico

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Abril Rodríguez-González

2008-06-01

Full Text Available Se caracterizaron las comunidades componentes e infracomunidades de helmintos de Symphurus plagiusa en 37 puntos de muestreo de mayo a septiembre de 2003 en la costa de Campeche. Además, se exploraron posibles asociaciones estadísticas entre la abundancia de cada especie y los parámetros ambientales (salinidad, oxígeno, volumen de descarga de agua de ríos mediante análisis de redundancia (RDA. Se examinaron 531 hospederos, cuyas comunidades componentes e infracomunidades fueron pobres en número de especies (máximos: 8 y 3 ± 1 respectivamente, pero no en individuos (16775 y 47 ± 32. La diversidad fue baja (componente: Simpson = 1; infracomunidad: Brillouin = 0.24 ± 0.11. La similitud en cada mes fue baja para componente (cualitativa, Jaccard: 0.25 ± 0.34; cuantitativa, % de similitud: 51 ± 49 e infracomunidad (cualitativa: 0.59 ± 0.24; cuantitativa: 46 ± 24. La similitud entre meses fue alta en componente (cualitativa: 0.63 ± 0.28; cuantitativa: 82 ± 15 e infracomunidad (cualitativa: 0.89 ± 0.10; cuantitativa: 77 ± 21. Hubo asociaciones significativas entre la abundancia de especies y el volumen de descarga de agua de los ríos entre meses, lo que sugiere que este parámetro influye fuertemente sobre la composición y estructura de estas comunidades.The component communities and infracommunities of Symphurus plagiusa were characterized for 37 sampling points from May to September 2003 along the Campeche coast. Possible statistical associations were also studied between the abundance of each helminth species and environmental parameters (e.g. salinity, oxygen concentration, river discharge water volumes using redundancy analysis (RDA. We examined 531 hosts, whose component communities and infracommunities were poor in species number (maximum: 8 and 3 ± 1 respectively; but not in number of individuals (16775 and 47 ± 32. Diversity was low (component: Simpson = 1; infracommunity: Brillouin = 0.24 ± 0.11. Similarity within

Dinámica poblacional y reproductiva de Turbinella angulata y Busycon perversum (Mesogasteropoda: Turbinellidae y Melongenidae en el Banco de Campeche, México Turbinella angulata and Busycon perversum (Mesogasteropoda: Turbinellidae and Melongenidae population and reproductive dynamics in the Campeche Bank, Mexico

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Josefina Santos Valencia

2013-03-01

Full Text Available Turbinella angulata y Busycon perversum aportan la mayor captura de caracol en el Golfo de México (90%.Se realizaron muestreos mediante transectos lineales (150x1.5m de abril 2008 a marzo 2010 y en las capturas comerciales del Banco de Campeche (18°-20º N - 90°- 91º O. 2 832 individuos de T. angulata fueron medidos, las tallas variaron entre 63-282mm (LS, la proporción hembras:machos fue 0.98:1. Los valores de crecimiento fueron: L=346mm, K=0.30 y t0=-0.24. El periodo reproductivo fue de enero a mayo con reposo de junio a septiembre (80%. La talla de primera madurez (L fue de 210mm (LS en hembras y 200mm en machos. De B. perversum,1 655 ejemplares fueron analizados con tallas entre 78-292mm, presentando diferencias significativas entre longitudes de machos y hembras (p0.05. La proporción hembras:machos fue 1:0.25. Los valores de crecimiento fueron L=360 mm, K=0.35 y t=-0.19. El periodo reproductivo fue de agosto a diciembre con reposo de enero a abril. La L50 fue de 215mm (LS en hembras y 190mm en machos. Se observó un pulso de reclutamiento anual en ambas especies relacionado con el incremento en la temperatura marina. Los resultados ayudarán a definir un esquema de manejo basado en los atributos poblacionales y reproductivos de las especies.Turbinella angulata and Busycon perversum are two marine gastropods that support the 90% of conch fisheries in the Gulf of Mexico, nevertheless there is no information available to support a management strategy for both species. The aim of this work was to obtain preliminary fishery information to promote management actions for both species in the Campeche Bank. The population of conchs was sampled in 12 transects (150x1.5m by SCUBA diving from April 2008 to March 2010. All conchs were collected and siphonal length (SL was measured. These samples were complemented with data from the commercial catches, analyzing a total of 2 832 individuals of T. angulata. Siphonal length varied between 63 and 282

A new species of Euzetia (Monogenea: Monocotylidae on the gills of Rhinoptera bonasus (Rhinopteridae from Ciudad del Carmen, Campeche, México Una especie nueva de Euzetia (Monogenea: Monocotylidae de las branquias de Rhinoptera bonasus (Rhinopteridae de Ciudad del Carmen, Campeche, México

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Griselda Pulido-Flores

2008-08-01

Full Text Available Euzetia lamothei n. sp. (Monogenea: Euzetiinae is described from the gills of the stingray, Rhinoptera bonasus, collected from marine waters near Ciudad del Carmen, Campeche, Mexico. The species is assigned to Euzetia Chisholm and Whittington, 2001 because it has a haptor with 10 peripheral loculi and 1 central loculus flanked by 2 lateral loculi. The species described herein can be distinguished from the only known member of the genus, E.occultum, by the morphology of the male copulatory organ, the vas deferens sigmoid, and the presence of a vaginal chamber. Euzetia lamothei n. sp. was found on 1 of 7 R.bonasus (14%. This species is the first record of a member of the genus from the neotropics, the first from Mexico, and the second report of a monocotylid from Rhinoptera.Se describe Euzetia lamothei n. sp. (Monogenea: Euzetiinae, parásito de la branquias de la mantarraya Rhinoptera bonasus, recolectada en Ciudad del Carmen, Campeche, México. Los ejemplares se asignaron a Euzetia Chisholm y Whittington, 2001 porque presentan un haptor con 10 loculi periféricos y 1 loculus central flanqueado por 2 loculi laterales. La especie aquí descrita se distingue de E.occultum por la morfología del órgano copulador, el vaso deferente sigmoide y la presencia de una cámara vaginal. Euzetia lamothei n. sp. se encontró en 1 de 7 R.bonasus (14%. Esta especie representa el primer registro de un miembro del género en el neotrópico, además es el primer registro en México, y el segundo de un monocotílido de Rhinoptera.

EL CUERPO Y LA PERSONA EN EL ESPACIO-TIEMPO DE LOS MAYAS DE LOS CHENES, CAMPECHE

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Javier Hirose López

2007-12-01

Full Text Available Para los médicos tradicionales mayas de la región de los Chenes, en el estado de Campeche, winik, el término que designa a la persona, hombre o individuo (Barrera Vázquez 2001, está estrechamente ligado al simbolismo de los rituales de sanación y los principios de la cosmovisión maya. En contraste con la visión cartesiana del mundo, propia de la mente occidental, que separa el cuerpo de la mente y el espíritu, para los mayas la persona se manifiesta en su forma material, el cuerpo, kukut, como reflejo del cosmos, con cuatro rumbos y un centro, y se conforma por los elementos de la naturaleza: tierra, agua, fuego, viento y luz. Simultáneamente, los mismos componentes que conforman su materialidad se manifiestan como entidades sutiles a través de las cuales el individuo se interrelaciona con los diferentes niveles del cosmos. Dicha interacción se da en un espacio delimitado por cuatro lados, cuyo movimiento —en contrasentido al giro de las manecillas del reloj— lo liga con el tiempo.   ABSTRACT For the mayan traditional healers of the Chenes region in Campeche, winik, the term used to designate a “person”, “man” or “individual”(Barrera-Vázquez 2001, is closely linked to the healing rituals and the principles of mayan cosmology. The Cartesian world view, proper to the occidental mind, separates the body from the mind and the spirit. In contrast, for the mayan, the person has a material aspect, the body, kukut, which resembles the cosmos, with four orientations and a center, and is the manifestation of the elements present in nature: earth, water, fire, wind and light. Simultaneously, the same components that conform its materiality, are manifest as subtle entities that let the individual interact with the different levels of the cosmos. This interaction takes place in a dimension defined by a four sided space which moves in the universe in a counter-clockwise direction.

Glyphosate Residues in Groundwater, Drinking Water and Urine of Subsistence Farmers from Intensive Agriculture Localities: A Survey in Hopelchén, Campeche, Mexico

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Jaime Rendon-von Osten

2017-06-01

Full Text Available The use of pesticides in Mexican agriculture creates an interest in learning about the presence of these substances in different environmental matrices. Glyphosate (GLY is an herbicide widely used in the state of Campeche, located in the Mayan zone in the western Yucatan peninsula. Despite the fact that GLY is considered a non-toxic pesticide to humans, its presence in water bodies through spillage, runoff, and leaching are a risk to human health or biota that inhabit these ecosystems. In the present study, glyphosate residues were determined in groundwater, bottled drinking water, and the urine of subsistence farmers from various localities of the Hopelchén municipality in Campeche. Determination of GLY was carried out using Enzyme-Linked Immunosorbent Assay (ELISA. The highest concentrations of GLY were observed in the groundwater (1.42 μg/L of Ich-Ek and urine (0.47 μg/L samples of subsistence farmers from the Francisco J. Mújica communities. The glyphosate concentrations in groundwater and bottled drinking water indicate an exposure and excessive use of glyphosate in these agricultural communities. This is one of the first studies that reports glyphosate concentration levels in human urine and bottled drinking water in México and in the groundwater in the Yucatan Peninsula as part of a prospective pilot study, to which a follow-up will be performed to monitor this trend over time.

Glyphosate Residues in Groundwater, Drinking Water and Urine of Subsistence Farmers from Intensive Agriculture Localities: A Survey in Hopelchén, Campeche, Mexico.

Science.gov (United States)

Rendon-von Osten, Jaime; Dzul-Caamal, Ricardo

2017-06-03

The use of pesticides in Mexican agriculture creates an interest in learning about the presence of these substances in different environmental matrices. Glyphosate (GLY) is an herbicide widely used in the state of Campeche, located in the Mayan zone in the western Yucatan peninsula. Despite the fact that GLY is considered a non-toxic pesticide to humans, its presence in water bodies through spillage, runoff, and leaching are a risk to human health or biota that inhabit these ecosystems. In the present study, glyphosate residues were determined in groundwater, bottled drinking water, and the urine of subsistence farmers from various localities of the Hopelchén municipality in Campeche. Determination of GLY was carried out using Enzyme-Linked Immunosorbent Assay (ELISA). The highest concentrations of GLY were observed in the groundwater (1.42 μg/L) of Ich-Ek and urine (0.47 μg/L) samples of subsistence farmers from the Francisco J. Mújica communities. The glyphosate concentrations in groundwater and bottled drinking water indicate an exposure and excessive use of glyphosate in these agricultural communities. This is one of the first studies that reports glyphosate concentration levels in human urine and bottled drinking water in México and in the groundwater in the Yucatan Peninsula as part of a prospective pilot study, to which a follow-up will be performed to monitor this trend over time.

Registros de zopilote rey (Sarcoramphus papa en el área de Laguna de Términos, Campeche, México

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Mircea Hidalgo-Mihart

2012-07-01

Full Text Available Reportamos la presencia de dos individuos juveniles de zopilote rey, Sarcoramphus papa, en la Selva La Montaña localizada al suroeste del Área de Protección de Flora y Fauna Silvestre Laguna de Términos, Campeche, México. Realizamos el registro por medio de fotografías utilizando cámaras trampa. La presencia de esta especie protegida en el área evidencia la importancia que tiene la región de la Selva La Montaña para la conservación de la biodiversidad, especialmente para especies en peligro de extinción.

Registros de zopilote rey (Sarcoramphus papa) en el área de Laguna de Términos, Campeche, México

OpenAIRE

Mircea Hidalgo-Mihart; Fernando M. Contreras-Moreno; Luz A. Pérez-Solano

2012-01-01

Reportamos la presencia de dos individuos juveniles de zopilote rey, Sarcoramphus papa, en la Selva La Montaña localizada al suroeste del Área de Protección de Flora y Fauna Silvestre Laguna de Términos, Campeche, México. Realizamos el registro por medio de fotografías utilizando cámaras trampa. La presencia de esta especie protegida en el área evidencia la importancia que tiene la región de la Selva La Montaña para la conservación de la biodiversidad, especialmente para especies en peligro d...

Analysis of vector magnetic anomalies over the Bayonnaise Knoll caldera obtained from a deep-sea magnetic exploration by AUV

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Sayanagi, K.; Isezaki, N.; Matsuo, J.; Harada, M.; Kasaya, T.

2011-12-01

Geophysical surveys near the seafloor are very effective methods in order to investigate fine structures of the oceanic crust. Such surveys have increased in researches and developments of the seafloor, and will be more and more necessary in the future. For example, seabed resources like hydrothermal deposits have recently focused attention behind the international situation for natural resources like a competition of resources development. In order to estimate accurate abundance of those resources, the above detailed investigations should be needed because of low resolution of geophysical surveys on the sea and low efficiency of exploratory drilling. From such a viewpoint, we have been developing a measurement system for magnetic explorations using an AUV and a deep-tow system. The magnetic exploration system consists of two 3-axis flux-gate magnetometers, one/two Overhauser magnetometer(s), an optical fiber gyro, a main unit (control, communication, recording), and an onboard unit. These devices except for the onboard unit are installed in pressure cases (depth limit: 6000m). Thus this system can measure three components and total intensity of the geomagnetic field in the deep sea. In 2009, the first test of the magnetic exploration system was carried out in the Kumano Basin using AUV Urashima and towing vehicle Yokosuka Deep-Tow during the R/V Yokosuka YK09-09 cruise. In this test, we sank a small magnetic target to the seafloor, and examined how the system worked. As a result, we successfully detected magnetic anomaly of the target to confirm the expected performance of that in the sea. In 2010, the magnetic exploration system was further tested in the Bayonnaise Knoll area both using a titanium towing frame during the R/V Bosei-maru cruise and using AUV Urashima during the R/V Yokosuka YK10-17 cruise. The purpose of these tests was to evaluate the performance of the system in an actual hydrothermal deposit area for practical applications of that. The

(L. Benth. en bosques secundarios en Escárcega, Campeche, México

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J. L. López-Torres

2005-01-01

Full Text Available El T´zalam Lysiloma latisiliquum (L. Benth. en la región de Escárcega, Campeche, México, es la especie más abundante y con mayor importancia económica en bosques secundarios derivados de selva mediana subperennifolia, después haber sido intervenida mediante el sistema rosa-tumba-quema. El objetivo de este trabajo es analizar el comportamiento del crecimiento en diámetro de esta especie, en un periodo de 20 años de desarrollo. A partir de la variable diámetro normal (d1.3, agrupada en categorías diamétricas, se estimaron los incrementos anuales medio, máximo y mínimo para cada categoría. Los resultados indican que en el escenario más ventajoso se requiere de 10.6 años para que los árboles pasen de categoría reserva a categoría aprovechable y, en promedio, es necesario de 21.5 años para alcanzar la misma condición. El incremento en diámetro fue, en promedio, de 0.511 cm y se clasifica como medio.

ENVIRONMENTAL IMPACT OF FISH FARMING IN FLOATING CAGES IN ISLA ARENA, CAMPECHE

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Yadira Silva-Cruz

2011-11-01

Full Text Available Mariculture is the cultivation of marine species of commercial importance. This activity has intensified in recent decades due to the need for food production. The present study evaluated the impact of Rachycentron canadum (Cobia and Sciaenops ocellatus (Red Drum farming in floating cages along the coasts of Campeche, Mexico. The impact of this mariculture system was evaluated through the physicochemical analysis of the sediment from underneath the cages and the analysis of the quality of the water from the farming area. Results showed high concentrations of nitrogen (> 0.5 % and organic matter (> 80 %, both in the farming area and in the control sites. The concentration of fine sediment showed no spatial or temporal changes. There were no detectable concentrations of nitrites, nitrates, ammonium and phosphates in the water, in a range of 0.1 to 100 mg L-1. The impact caused by this farming system appeared to be non significant, at least in the area of study, due to the constant movement of the water caused by ocean currents which, very likely, carried the waste from the cages to other places.

RESULTADOS DE LA MEDICIÓN Y ANÃ LISIS DE COMPETENCIAS EMPRENDEDORAS PARA LA CREACIÓN DE AGROEMPRESAS. EXPERIENCIA DE LA ZONA MAYA DE CAMPECHE

OpenAIRE

Santos Valencia, Raúl Alberto; Barroso Tanoira, Francisco Gerardo; Ã vila Ortega, Jorge Iván

2014-01-01

This study presents the results of an administration instrument used to measure and analyze the entrepreneurial skills of young people between the ages of 18 and 29 years in order to determine their skill level as entrepreneurs for starting or managing a successful business in the Mayan region in the northern part of the state of Campeche, located in southeastern Mexico. The cultural, social and political conditions of the mostly indigenous population have remained at a social and economic st...

Harmful Algal Blooms of the West Florida Shelf and Campeche Bank: Visualization and Quantification using Remote Sensing Methods

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Soto Ramos, Inia Mariel

% false negatives, similar to those from more complex techniques. The first chapter concludes with a series of recommendations on how to improve the detection techniques and how to take these results a step further into a Gulf wide observing systems for HABs. In chapter two, ocean color techniques were used to examine the extension, evolution and displacement of four Karenia spp. events that occurred in the WFS between 2004 and 2011. Blooms were identified in the imagery using the new Rrs-FLH method and validated using in situ phytoplankton cell counts. The spatial extension of each event was followed in time by delineating the blooms. In 2004 and 2005, the WFS was affected by a series of hurricanes that led to high river discharge and intense sediment resuspension events. Both processes had an impact on HAB occurrence. For example, I tracked a Karenia spp. bloom found in late December 2004 approximately 40-80 km offshore Saint Petersburg, which then expanded reaching an extension of >8000 km2 in February 2005. The bloom weakened in spring 2005 and intensified again in summer reaching >42,000 km 2 after the passage of hurricane Katrina in August 2005. This bloom covered the WFS from Charlotte Harbor to the Florida Panhandle. Two other cases were studied in the WFS. The results of the Hybrid Coordinate Ocean Model from the U.S. Navy aid understanding the dispersal of the blooms. During fall 2011, three field campaigns to study HABs in Mexico were conducted to do an analysis of optical properties and explore the possibility of using ocean color techniques to distinguish between the main phytoplankton blooms in that region. Three main bloom scenarios were observed in the Campeche Bank region: massive diatom blooms, blooms dominated by Scrippsiella spp., and Karenia spp. blooms. The normalized specific phytoplankton absorption spectra were found to be different for Karenia spp. and Scrippsiella sp. blooms. A new technique that combines phytoplankton absorption derived from

Prevalence of Gulf war veterans who believe they have Gulf war syndrome: questionnaire study

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Chalder, T; Hotopf, M; Unwin, C; Hull, L; Ismail, K; David, A; Wessely, S

2001-01-01

Objectives To determine how many veterans in a random sample of British veterans who served in the Gulf war believe they have “Gulf war syndrome,” to examine factors associated with the presence of this belief, and to compare the health status of those who believe they have Gulf war syndrome with those who do not. Design Questionnaire study asking British Gulf war veterans whether they believe they have Gulf war syndrome and about symptoms, fatigue, psychological distress, post-traumatic stress, physical functioning, and their perception of health. Participants 2961 respondents to questionnaires sent out to a random sample of 4250 Gulf war veterans (69.7%). Main outcome measure The proportion of veterans who believe they have Gulf war syndrome. Results Overall, 17.3% (95% confidence interval 15.9 to 18.7) of the respondents believed they had Gulf war syndrome. The belief was associated with the veteran having poor health, not serving in the army when responding to the questionnaire, and having received a high number of vaccinations before deployment to the Gulf. The strongest association was knowing another person who also thought they had Gulf war syndrome. Conclusions Substantial numbers of British Gulf war veterans believe they have Gulf war syndrome, which is associated with psychological distress, a high number of symptoms, and some reduction in activity levels. A combination of biological, psychological, and sociological factors are associated with the belief, and these factors should be addressed in clinical practice. What is already known on this topicThe term Gulf war syndrome has been used to describe illnesses and symptoms experienced by veterans of the 1991 Gulf warConcerns exist over the validity of Gulf war syndrome as a unique entityWhat this study adds17% of Gulf war veterans believe they have Gulf war syndromeHolding the belief is associated with worse health outcomesKnowing someone else who believes they have Gulf war syndrome and receiving

Determinación y prevalencia de Mycobacterium spp., en tilapia nilótica (Oreochromis niloticus cultivada en Campeche, México

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Maurilio Lara-Flores

2013-03-01

Full Text Available Objetivo. Determinar la presencia y prevalencia de Mycobacterium spp., en granjas de tilapia nilótica (Oreochromis niloticus en el Municipio de Champotón, Campeche, México. Materiales y métodos. La colecta de organismos se realizó en tres granjas de cultivo de tilapia nilótica del municipio de Champotón, Campeche, México. Los organismos se examinaron externa e internamente y se tomó una muestra de riñón la cual fue sembrada en forma de estría en medios de cultivo: Löwesntein-Jensen, TCBS, KF y en TSA; las placas fueron incubadas a 35°C de 24 a 48 horas, los órganos fueron fijados en formalina tamponada al 10% para ser procesados para histología de rutina para análisis posteriores. Asimismo, muestras de cultivo bacteriológico y de tejido fueron teñidas con la técnica de Ziel-Neelsen con el fin de observar la presencia de bacilos ácido-alcohol resistentes. Resultados. Los resultados obtenidos sugieren que la presencia de Mycobacterium spp., es constante y en alta prevalencia y puede ser un factor que este mermando la rentabilidad del cultivo. Conclusiones. La presencia de Mycobacterium spp., representa un riesgo para el cultivo de tilapia en el municipio de Champotón, por ser una enfermedad muy persistente y difícil de erradicar una vez ocurrido e brote de infección, por lo cual es importante llevar estudios más detallados de la presencia de este género bacteriano, así como, medidas de prevención y dispersión de este patógeno en los cultivos adyacentes.

EVALUACIÓN DE LOS PROGRAMAS DE CRÉDITO A PROYECTOS PRODUCTIVOS DE MUJERES EN TABASCO, CAMPECHE Y QUINTANA ROO

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Esperanza Tuñón Pablos

2010-01-01

Full Text Available En este texto se evalúa el impacto en las condiciones socioeconómicas, calidad de vida y proceso de empoderamiento de las beneficiarias de los programas de crédito a proyectos productivos para mujeres desarrollados entre 2000 y 2003 por cuatro dependencias federales (Sedesol, CDIINI, Fonaes y SRA en los estados de Tabasco, Campeche y Quintana Roo. Así mismo, se valoran las oportunidades de desarrollo individual, familiar y comunitario de las mujeres que participan en dichos proyectos, se identifican las características de operación de los programas a fin de detectar deficiencias en su desempeño, y se sugieren alternativas viables para mejorar la implementación y el impacto social de los mismos.

Dieta y disponibilidad de forraje del venado cola blanca Odocoileus virginianus thomasi (Artiodactyla: Cervidae en un campo experimental de Campeche, México

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Danilo Granados

2014-08-01

Full Text Available En Campeche, México no existen estudios de la dieta de Odocoileus virginianus thomasi; a pesar de la existencia de 122 Unidades de Manejo para la Conservación de la Vida Silvestre (UMAS en donde se realiza aprovechamiento del venado cola blanca. Los objetivos del trabajo fueron conocer la composición botánica de la dieta y su cambio estacional, la disponibilidad de forraje, la capacidad de carga y carga animal de O. virginianus thomasi. El trabajo se realizó de octubre 2010 a mayo 2012 en el Campo Experimental del Colegio de Postgraduados en Campeche, México. La composición de la dieta se determinó mediante el análisis de heces de venado y material de referencia con la técnica microhistológica; la disponibilidad de forraje se estimó con el método de Adelaide; la capacidad de carga utilizando la presión de pastoreo y la carga animal considerando el forraje disponible y 35% de eficiencia de utilización. La dieta incluyó 40 especies de 15 familias. La riqueza de especies más alta fue de 29 especies en la época de lluvia; las arbustivas fueron preferidas en las tres épocas del año y las herbáceas en la época de lluvia. La composición de la dieta, disponibilidad de forraje, la capacidad de carga y carga animal variaron a través del año. La capacidad de carga fluctuó entre 0.04 a 1.08 venados/ha.

2015 Gulf Guardian Awards

Science.gov (United States)

The Gulf of Mexico Program Partnership developed the Gulf Guardian awards as a way to recognize and honor the businesses, community groups, individuals, and agencies that are taking positive steps to keep the Gulf healthy, beautiful and productive.

Estructura de tallas, madurez gonádica y alimentación del pez Diapterus rhombeus (Gerreidae en el sistema fluvio-deltaico Pom-Atasta, Campeche, México

Directory of Open Access Journals (Sweden)

Arturo Aguirre-León

2006-06-01

Full Text Available Se estudió el pez D. rhombeus en el sistema fluviodeltaico Pom-Atasta, asociado a la Laguna de Términos Campeche, en un ciclo anual de 1992 a 1993. Esta especie es dominante en el sistema por su abundancia numérica, peso, frecuencia y amplia distribución. Se obtuvieron 745 individuos con un peso total de 2 890.2 g y un intervalo de longitud total de 3.0 a 16.7 cm. La variación anual del coeficiente alométrico b fue de 2.71 a 3.45. El factor de condición varió de 0.711 a 0.934. Fueron obtenidas diferencias significativas (pSize structure, gonadic development and diet of the fish Diapterus rhombeus (Gerreidae in the Pom-Atasta fluvial-deltaic system, Campeche, Mexico. The fish Diapterus rhombeus was studied during an annual cycle from 1992 to 1993 in the fluvial-deltaic Pom-Atasta system associated with Terminos Lagoon, Campeche, Mexico. It is a dominant species in the system, based on its numeric abundance, weight, high frequency and wide distribution. A total of 745 individuals were obtained, with a weigth of 2 890.2 g and length ranging from 3.0 to 16.7 cm. The annual variation of the allometric coefficient b was from 2.71 to 3.345. The condition factor varied from 0.711 to 0.934. The statistical analysis shows significant differences (p< 0.05 between the seasons of the year and the habitats of the system for the weight, the longitude and the condition factor K, which reflects the space-temporal utilization of the system for the species. The population present at Pom-Atasta, consists mainly by juvenile and few preadults individuals in gonadal stages I, II, and III, and more females than males were recorded. This species utilizes the system as a nursery area, growth and feeding area. It has a varied trophic spectrum, and consumes at least eight different groups. Its principal food items are undetermined organic matter, foraminifers, ostracods and tanaidaceans. It is a first order consumer. The Pom-Atasta system is located in a zone of

Depressive states and adolescent alcohol consumption secondary in Ciudad del Carmen Campeche, México

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Juan Yovani Telumbre Terrero

2017-06-01

Full Text Available Introduction: Adolescence is a stage where personal identity is sought and each teenager experiences this period of life in different ways, allowing him to obtain physical, emotional and cognitive maturity. Objective: To determine the relationship between depressive states and alcohol consumption in adolescents from middle school in Ciudad del Carmen, Campeche, México. Methods: A correlational descriptive study, conducted in 327 middle school adolescents. Data collection uses a personal data record and alcohol consumption and the Beck Depression Inventory. Statistical package for the social sciences (SPSS, version 23.0, using descriptive and inferential statistics. Results: 53.5% of adolescents have ever consumed alcohol, 33.9% in the last year, 20.5% in the last month and 10,1% in the last week. 13.4% of adolescents present mild depression, 11% moderate depression and 8.3% severe depression. There is a positive and significant relationship between depressive states and the amount of alcohol consumed by adolescents on a typical day (rs = 0.163, p = 0.003. Conclusion: The phenomenon of addiction represents an area of opportunity for health professionals in education and health promotion and prevention of disease at various levels of health care.

Radiological analysis of environmental samples in some points of the coast of the Gulf of Mexico and Coast of Quintana Roo, Mexico

International Nuclear Information System (INIS)

Salas Mar, Bernardo; Martinez Negrete, Marco Antonio; Ruiz Chavarria, Gerardo; Abarca Munguia, Jose

2008-01-01

Full text: We describe in this paper the results obtained by the project 'Radiological analysis of environmental samples in some points of the coast of the Gulf of Mexico and coast of Quintana Roo, Mexico'. The purpose of the study is to identify and quantify the natural and anthropogenic radionuclides present from sediments, sand and seawater from several sites located along the coast of the Gulf of Mexico and the Caribean Sea. The samples are analysed in a Canberra Multichannel analyzer system for gamma spectrometry, equipped with a detector of hyper pure germanium and a Genie 2000 software, in the 'Laboratory of Radiological Analysis of Environmental Samples', belonging to the Physics Department, Faculty of Sciences, National Autonomous University of Mexico (UNAM). The geographic sites were samples were taken include the states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatan and Quintana Roo. The results of this studies will be published at the end of the project and we hope they will be useful for the national health and industrial sectors. Until now we have identified and measured the presence of natural radionuclides such as Potassium-40 (K-40), Bismuth 212 (Bi-212), Lead-212 (Pb-212), Bismuth-214 (Bi-214), Lead-214 (Pb-214), Radium-226 (Ra-226), Actinium 228 (Ac-228), Uranium-235 (U-235), as well as some anthropogenic radionuclides found near the Laguna Verde Nuclear Power Plant. The project is scheduled to last for three years, finishing in 2009. At its ending we shall be able to present conclusions and identify some tendencies, in connection with the background and possible radioactive contamination of the studied zones. This project takes place under the auspice of the 'Program of Support to Projects of Research and Technological Innovation' of the National Autonomous University of Mexico. (author)

Hurricane shuts down gulf activity

International Nuclear Information System (INIS)

Koen, A.D.

1992-01-01

This paper reports that producers in the Gulf of Mexico and plant operators in South Louisiana last week were checking for damage wrought by Hurricane Andrew. In its wake Andrew left evacuated rigs and platforms in the gulf and shuttered plants across a wide swath of the Gulf Coast. Operations were beginning to return to normal late last week. Not all gulf operators, especially in the central gulf, expected to return to offshore facilities. And even producers able to book helicopters did not expect to be able to fully assess damage to all offshore installations before the weekend. MMS officials in Washington estimated that 37,500 offshore workers were evacuated from 700 oil and gas installations on the gulf's Outer Continental Shelf. Gulf oil and gas wells account for about 800,000 b/d of oil and one fourth of total U.S. gas production. MMS was awaiting an assessment of hurricane damage before estimating how soon and how much gulf oil and gas production would be restored

76 FR 54375 - Safety Zone; Thunder on the Gulf, Gulf of Mexico, Orange Beach, AL

Science.gov (United States)

2011-09-01

...-AA00 Safety Zone; Thunder on the Gulf, Gulf of Mexico, Orange Beach, AL AGENCY: Coast Guard, DHS... portion of the Gulf of Mexico for the waters off Orange Beach, Alabama. This action is necessary for the... conduct a high speed boat race on the Gulf of Mexico, south of Orange Beach, Alabama to occur from October...

No evidence for altered cellular immune functions in personnel deployed in the Persian Gulf during and after the Gulf War--The Danish Gulf War study

DEFF Research Database (Denmark)

Bregenholt, S; Ishøy, T; Skovgaard, L T

2001-01-01

Veterans who have participated in the Gulf War suffer from a number of symptoms, collectively referred to as the Gulf War Syndrome. It has been hypothesized that a change in the systemic cytokine balance or other changes in immunological parameters could be responsible for some of the symptoms. We...... analyzed the peripheral blood natural killer (NK) cell activity of 686 Gulf War personnel who had been present in the Persian Gulf area during and immediately after the Gulf War as well as 231 gender and age-matched controls. The test material included individual samples of frozen peripheral blood...

2015 Gulf Guardian Award Winners

Science.gov (United States)

The Gulf of Mexico Program Partnership developed the Gulf Guardian awards as a way to recognize and honor the businesses, community groups, individuals, and agencies that are taking positive steps to keep the Gulf healthy, beautiful and productive.

2017 Gulf Guardian Award Winners

Science.gov (United States)

The Gulf of Mexico Program Partnership developed the Gulf Guardian awards as a way to recognize and honor the businesses, community groups, individuals, and agencies that are taking positive steps to keep the Gulf healthy, beautiful and productive.

78 FR 14983 - Fisheries of the Gulf of Mexico; Gulf of Mexico Fishery Management Council; Public Meeting

Science.gov (United States)

2013-03-08

... the Gulf of Mexico; Gulf of Mexico Fishery Management Council; Public Meeting AGENCY: National Marine... of Gulf of Mexico Fishery Management Council Spanish Mackerel and Cobia Stock Assessment Review Workshop. SUMMARY: Independent peer review of Gulf of Mexico Spanish Mackerel and Cobia stocks will be...

77 FR 56168 - Reef Fish Fishery of the Gulf of Mexico; Gulf of Mexico Individual Fishing Quota Programs

Science.gov (United States)

2012-09-12

.... 090206140-91081-03] RIN 0648-XC227 Reef Fish Fishery of the Gulf of Mexico; Gulf of Mexico Individual... red snapper and grouper/tilefish components of the reef fish fishery in the Gulf of Mexico (Gulf), the... INFORMATION: The reef fish fishery of the Gulf of Mexico is managed under the Fishery Management Plan for Reef...

Influencia de la disponibilidad de agua en la presencia y abundancia de Tapirus bairdii en la selva de Calakmul, Campeche, México Influence of water availability in the presence and abundance of Tapirus bairdii in the Calakmul forest, Campeche, Mexico

Directory of Open Access Journals (Sweden)

Sadao Pérez-Cortez

2012-09-01

Full Text Available En 15 aguadas agrupadas en 3 microrregiones (norte, centro y sur y sus alrededores se evaluaron las características ambientales que podrían determinar la presencia y abundancia del tapir (Tapirus bairdii en la Reserva de la Biosfera Calakmul (RBC, Campeche. Entre los años 2008-2010, se registró la presencia del tapir en 14 aguadas con un esfuerzo de muestreo de 3 470 días-trampa, la abundancia fue de 37.57 individuos /1 000 trampas-noche. Los tapires mostraron un patrón de actividad nocturno, la estructura de edad fue dominada por adultos y la proporción de sexos de los individuos fotografiados fue de 1 a 1. La microrregión sur y la aguada 6 (de la microrregión centro tuvieron mayor abundancia. La abundancia, disponibilidad de alimento y agua presentaron variaciones a escala espacial y temporal. La presencia del agua en las aguadas fue determinante para la presencia de tapir, pero las variables ambientales que más influyeron en la abundancia fueron el porcentaje de agua en las aguadas y la dominancia vegetal de acahual arbóreo y selva alta. En la región de Calakmul, las aguadas deben ser una de las prioridades en su conservación.In 15 waterholes (aguadas grouped in 3 micro-regions (North, Central and South and surrounding areas, we evaluated the environmental characteristics that could determine presence and abundance of the tapir (Tapirus bairdii in Calakmul Biosphere Reserve (CBR, Campeche. Tapirs presence were recorded in 14 watering holes between 2008 and 2010, with a sample effort of 3 470 days/camera-trap. The abundance was of 37.57-individuals/1 000 nights traps. Tapirs showed a nocturnal activity pattern and the age structure was dominated by adults with a sex ratio of 1:1. The southern micro-region and the waterhole 6 (central micro-region had highest abundance. Abundance, food and water availability showed spatial and temporal variations. Water presence in waterholes was crucial to the presence of tapirs; the environmental

75 FR 54445 - Proposed Information Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era...

Science.gov (United States)

2010-09-07

... Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era Veterans) Activity: Comment Request... assist in VA's efforts to address the health concerns and problems of Gulf War Veterans. DATES: Written... of Gulf War and Gulf Era Veterans, VA Form 10-0488, and Consent Form for Release of Medical Records...

76 FR 64248 - Gulf of Mexico Reef Fish Fishery; Closure of the 2011 Gulf of Mexico Commercial Sector for...

Science.gov (United States)

2011-10-18

.... 040205043-4043-01] RIN 0648-XA766 Gulf of Mexico Reef Fish Fishery; Closure of the 2011 Gulf of Mexico... the commercial sector for greater amberjack in the exclusive economic zone (EEZ) of the Gulf of Mexico... Reef Fish Resources of the Gulf of Mexico (FMP). The FMP was prepared by the Gulf of Mexico Fishery...

75 FR 70365 - Agency Information Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era...

Science.gov (United States)

2010-11-17

... (Follow-Up Study of a National Cohort of Gulf War and Gulf Era Veterans) Activity Under OMB Review AGENCY...).'' SUPPLEMENTARY INFORMATION: Titles: Follow-Up Study of a National Cohort of Gulf War and Gulf Era Veterans, VA..., will help VA to assess the health of Gulf War veterans who were exposed to a variety of environmental...

Processes in Environmental Depositional Systems and Deformation in Sedimentary Basins: Goals for Exoloration in Mexico

Science.gov (United States)

Sandoval-Ochoa, J.

2005-05-01

Among the recent needs to establish new goals in the mexican energy industry to increase the petroleum reserves, has been necessary to recapitulate on some academic an operative concepts and definitions applied to the Petroliferous Basins Exploration; first of all, in order to understand the Petroleum System in given tectonophysical framework. The tectonophysical environment experienced by the petroliferous basin in the southwestern Gulf of Mexico, merely in the Campeche Sound and adjacent terrestrial regions (Figure 1); has been the result of interaction among the tectonic plates, the Coco's Plate with impingement and subduction beneath the Northamerican Plate and the Yucatán Microplate and even in very deep connection with the oceanic crust of southwesternmost portion of the Gulf of Mexico and the one of the Caribbean sea beneath the gulf of Belize-Honduras. The tectonosedimentary effects in the Campeche Bay starting with the skeleton formed for the Cenozoic Era, kept simultaneous conditions in depositions and deformations because of strain, stress and collapse fields, acted through this Era up to the present day, as observed in the surface Aguayo et al, 1999 and Sandoval, 2000. The involved portions of the crust and its boundaries have also been performing the relative sinking of the mere southwestern centre of the Gulf of Mexico, and the rising of the southeastern lands of Mexico. In the middle contiguity are found the productive Tertiary basins of: Comalcalco, Macuspana, Salina del Itsmo, Campeche-Champoton and other in deep waters; all of them, in an arrangement of basins among distensive faulted blocks in echelon, falling down to the deep centre of the Gulf Sandoval, op cit. With this scenario and that ones of other basins, a recapitulation on concepts and definitions, has been made on the regional natural processes of the environmental depositional systems and on the basins analysis in the tectonophysical framework, in order to reflect on the

Estructura de tallas, madurez gonádica y alimentación del pez Diapterus rhombeus (Gerreidae) en el sistema fluvio-deltaico Pom-Atasta, Campeche, México

OpenAIRE

Arturo Aguirre-León; Silvia Díaz-Ruiz

2006-01-01

Se estudió el pez D. rhombeus en el sistema fluviodeltaico Pom-Atasta, asociado a la Laguna de Términos Campeche, en un ciclo anual de 1992 a 1993. Esta especie es dominante en el sistema por su abundancia numérica, peso, frecuencia y amplia distribución. Se obtuvieron 745 individuos con un peso total de 2 890.2 g y un intervalo de longitud total de 3.0 a 16.7 cm. La variación anual del coeficiente alométrico b fue de 2.71 a 3.45. El factor de condición varió de 0.711 a 0.934. Fueron obtenida...

The Role of Transforms in Gulf of Mexico Opening

Science.gov (United States)

Lundin, E.; Doré, A. G.

2017-12-01

The curious pie-shaped Gulf of Mexico (GoM) may be considered a high-angle back-arc basin to the Pacific Ocean. Opening was strongly facilitated by transforms, including a terminal transform on its Pacific side. GoM also formed synchronously with the nearby Central Atlantic when Gondwanaland pulled away from Laurasia in the Jurassic. Notably, GoM's oceanic crust never connected with that of the Atlantic, and the isolated nature of this small ocean led to periodically confined conditions that influenced the petroleum system. Of particular importance are the deposition of Callovian age salt and Tithonian age source rocks. The central part of GoM is generally accepted as underlain by oceanic crust, but the position of the continent-ocean boundaries (COB) is debated, as well as the nature of intervening crust. We favor an interpretation of the COBs marked by the regional scale, large-amplitude Houston, Florida, and Campeche magnetic anomalies, in turn probably reflecting seaward dipping reflectors of magma-rich margins. GoM's unusual shape may indirectly represent utilization of pre-existing transforms during the break-up of Pangea. Transforms represent long, linear weaknesses where the crust and lithosphere is already broken. Transforms seem to have governed the break-up of several oceanic segments in the North Atlantic and Arctic. The Suwanne suture of the Rheic Ocean is a pronounced magnetic anomaly that crosses Georgia-Florida and becomes aligned with the Houston magnetic anomaly, which here is interpreted as the northern COB to GoM. The Suwanne suture is oriented at high angle to the rest of the Rheic suture along the Appalachians and probably experienced lateral motion during the transpressional closure of the Rheic Ocean. This transform arguably represents a weak element in the Ouachita-Marathon orogen that allowed the Yucatan microcontinent to easily be plucked from the North American margin during the dispersal of Pangea, forming the GoM in the process. This

Deep-towed CSEM survey of gas hydrates in the Gulf of Mexico

Science.gov (United States)

Kannberg, P.; Constable, S.

2017-12-01

Controlled source electromagnetic (CSEM) surveys are increasingly being used to remotely detect hydrate deposits in seafloor sediments. CSEM methods are sensitive to sediment pore space resistivity, such as when electrically resistive hydrate displaces the electrically conductive pore fluid, increasing the bulk resistivity of the sediment. In July 2017, a two-week research cruise using an upgraded and expanded "Vulcan" towed receiver system collected over 250 line km of data at four sites in the Gulf of Mexico (GoM) thought to have hydrate bearing sediments. Hydrate bearing horizons at the survey sites ranged from 400-700 m below seafloor. Modeling suggested an array with source receiver offsets of up to 1600 m would be needed to properly image the deep hydrate. A deep towed electromagnetic transmitter outputting 270 Amps was towed 100 m above seafloor. Six Vulcan receivers, each recording three-axis electric field data, were towed at 200 m intervals from 600-1600 m behind the transmitter. The four sites surveyed, Walker Ridge 313, Orca Basin, Mad Dog, and Green Canyon 955, are associated with the upcoming GOM^2 coring operation scheduled for 2020. Wells at WR313 and GC955 were logged as part of a joint industry drilling project in 2009 and will be used to ground truth our inversion results. In 2008, WR313 and GC955 were surveyed using traditional CSEM seafloor receivers, accompanied by a single prototype Vulcan towed receiver. This prior survey will allow comparison of results from a seafloor receiver survey with those from a towed receiver survey. Seismic data has been collected at all the sites, which will be used to constrain inversions. In addition to the four hydrate sites surveyed, two lines were towed over Green Knoll, a deep-water salt dome located between Mad Dog and GC955. Presented here are initial results from our recent cruise.

The evolution of shallow crustal structures in early rift-transform interaction: a case study in the northern Gulf of California.

Science.gov (United States)

Farangitakis, Georgios-Pavlos; van Hunen, Jeroen; Kalnins, Lara M.; Persaud, Patricia; McCaffrey, Kenneth J. W.

2017-04-01

The Gulf of California represents a young oblique rift/transtensional plate boundary in which all of the transform faults are actively shearing the crust, separated by active rift segments. Previous workers have shown that in the northern Gulf of California, the relative plate motion between the Pacific and North American plates is distributed between: a) the Cerro Prieto Fault (CPF) in the NE b) the Ballenas Transform Fault (BTF) in the SW and c) a pull-apart structure located between these two faults consisting of a number of extensional basins (the Wagner, Consag, and Upper and Lower Delfin basins). A plate boundary relocation at approximately 2 Ma, continued to separate Isla Angel de la Guarda from the Baja California peninsula and created the 200x70 km2 NE-SW pull-apart structure located northeast of the BTF. Here we use seismic stratigraphy analysis of the UL9905 high resolution reflection seismic dataset acquired by the Lamont-Doherty Earth Observatory, Caltech, and the Centro de Investigación Científica y de Educación Superior de Ensenada to build on previous structural interpretations and seek to further understand the processes that formed the structural and sedimentary architecture of the pull-apart basin in the northern Gulf of California. We examine the formation of depositional and deformation structures in relation to the regional tectonics to provide insight into the development of structural patterns and related seismic-stratigraphic features in young rift-transform interactions. Using bathymetric data, characteristic seismic-stratigraphic packages, and seismic evidence of faulting, we confirm the existence of three major structural domains in the northern Gulf of California and examine the interaction of the seismic stratigraphy and tectonic processes in each zone. The first and most distinctive is an abrupt NE-SW 28x5 km2 depression on the seabed of the Lower Delfin Basin. This is aligned orthogonally to the BTF, is situated at its northern

Estudio arqueométrico de figurillas cerámicas mayas de Calakmul (Campeche, México

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García-Heras, M.

2006-08-01

Full Text Available The results derived from an archaeometric characterization study undertaken on a representative ensemble of Late Classic ceramic figurines coming from the archaeological field work carried out in the Mayan town of Calakmul (Campeche, México are reported and discussed in this paper. The main goals of the research were to gather some information on the technology of manufacture of these ceramics and provide some insights into their probable provenance. The archaeometric characterization was accomplished through the following complementary techniques: conventional optical microscopy (OM, X-ray powder diffraction (XRD, Fourier transform infrared spectroscopy (FT-IR and X-ray fluorescence (XRF. In order to isolate ceramic groups with a similar chemical profile, XRF data were also analyzed by exploratory multivariate statistical techniques. The resulting data indicate that most of the figurines were locally manufactured from a calcium carbonate (calcite-rich clay raw material. A small ceramic group containing mixed calcium and magnesium carbonates (dolomite, which could be foreign or from other area of the Calakmul region, was also identified. These data suggest that the production of ceramic figurines could be associated to workshops linked to the monopoly on ceramic production performed by the centralized power of the town of Calakmul during this period.

En este trabajo se presentan y discuten los resultados de la caracterización arqueométrica realizada sobre un conjunto representativo de figurillas cerámicas del Clásico Tardío procedentes de las excavaciones arqueológicas efectuadas en la ciudad maya de Calakmul (Campeche, México. Los objetivos principales han sido recabar información sobre la tecnología de manufactura de estas cerámicas y evaluar su posible procedencia. La caracterización arqueométrica se ha llevado a cabo mediante las siguientes técnicas complementarias: microscopía óptica convencional (MO, difracción de

INFLUENCIA DE LAS ESTRATEGIAS DE INGRESOS Y LAS POLITICAS PÚBLICAS SOBRE LA SEGURIDAD ALIMENTARIA EN COMUNIDADES RURALES MAYAS DEL NORTE DE CAMPECHE, MÉXICO

OpenAIRE

Lucio Pat Fernández; José Nahed Toral; Manuel Parra Vázquez; Luis García Barrios; Austreberta Nazar Beutelspacher; Eduardo Bello Baltazar

2010-01-01

En este artículo se examina el efecto de las estrategias de ingresos sobre la suficiencia de consumo calórico en grupos domésticos (GD) mayas de Campeche, México. El análisis se basó en el enfoque de modos de vida y la información se obtuvo de una encuesta censal de hogares (N=237) en cuatro comunidades. Los resultados revelan que todos los GD tienen una estrategia de ingreso diversificada con una orientación claramente definida. El índice de seguridad calórica es diferente entre co...

Tides and seiches in gulfs

International Nuclear Information System (INIS)

Pierini, S.

1981-01-01

In this paper Garrett's theory of tides in gulfs is extended so that its formalism includes the free oscillations (seiches) of the gulf. The elevation of the free surface zeta and the velocity field u are obtained in a rectangular, one-dimensional gulf opening into an infinite ocean. An application of the results to the Adriatic sea can explain qualitatively the long life of the uninodal seiche of that basin. (author)

Cambios en el uso del suelo y deforestación en el sur de los estados de Campeche y Quintana Roo, México

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Sergio Cortina Villar

1999-01-01

Full Text Available Landsat MSS satellite imagery from 1975 to 1990 were analyzed in order to estimate the rates of conversion of tropical forests and savannas to cropland and pasture in the southern Yucatán Peninsula of Mexico. The area of southeastern Campeche and southern Quintana Roo was subject of a federally financed directed-colonization program during the seventies, which included felling the tropical forests to establish modern agricultural and livestock areas, Although it was believed that most of the area understudy had been deforested, it was found that by the end of the period, 25% of the tropical forests had been deforested and 4-3% of the newly opened agricultural area had been abandoned from the intended cropland and livestock use and covered instead by shrubby or tree secondary vegetation.

75 FR 54965 - Proposed Information Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era...

Science.gov (United States)

2010-09-09

... Collection (Follow-Up Study of a National Cohort of Gulf War and Gulf Era Veterans) Activity: Comment Request... needed to assist in VA's efforts to address the health concerns and problems of Gulf War Veterans. DATES... use of other forms of information technology. Titles: Follow-Up Study of a National Cohort of Gulf War...

Influence of Subtropical Jetstream on Arabian Gulf Precipitation

Science.gov (United States)

Sandeep, S.; Pauluis, O.; Ravindran, A. M.; TP, S.

2017-12-01

The Arabian Gulf and surrounding regions are predominantly arid. However, this region hosts a large population due to the intense economic activity that is centered on the exploration of natural resources in and around the Arabian Gulf. Thus, few precipitation events that occur during boreal winter are important for society and ecology of this region. The mechanisms of winter precipitation over the Gulf are not well understood, partly due to a lack of long term meteorological observation. Here we explore the dynamics of Arabian Gulf winter precipitation events using available observations and a high resolution atmospheric model simulation. Our analyses show that the northern Gulf receives about six times more precipitation than the southern Gulf. Often, the southern Gulf precipitation forms as a result of downstream development of northern Gulf disturbance. The southward movement of northern Gulf disturbances is influenced by the location of subtropical jet. The probability of a northern Gulf precipitating weather system to move south is higher when the subtropical jet is located equatorward of 30°N. The equatorward position of jet favors the penetration of mid-latitude weather systems over the Arabian Peninsula, which in turn pushes the Arabian anticyclone eastward and triggers moisture transport from the Arabian Sea that is essential for southern Gulf precipitation events.

Gulf operations still recovering

International Nuclear Information System (INIS)

Koen, A.D.

1992-01-01

This paper reports that reports of damage caused by Hurricane Andrew were leveling off last week at the U.S. Minerals Management Service as Gulf of Mexico operators pressed ahead with repairs. The hurricane struck South Florida Aug. 4, churned west into the gulf, then swung north and hit the South Louisiana coast Aug. 5. By the close of business Sept. 8 MMS had received damage reports covering 83 pipeline segments and 193 platforms and satellite installations. MMS last week estimated about 500 MMcfd of gas production had been restored in the gulf and 100,000-150,000 b/d of oil. Production still lost as a result of Andrew was estimated at 2-2.5 bcfd of gas and 90,000-120 b/d of oil. MMS estimates Gulf of Mexico wells before the storm were producing about 12.5-13 bcfd of gas and 750,000 b/d of oil

Demografía de Caulerpa paspaloides var. Wudermannii (Bryopsidales: Caulerpaceae en la zona costera de Campeche, México

Directory of Open Access Journals (Sweden)

Sergio Armando Fuentes

2014-08-01

Full Text Available La vegetación subacuática de Los Petenes, Campeche, México, se destaca por su gran diversidad florística, compuesto por una gran variedad de pastos marinos y varias especies del género Caulerpa sp. Caulerpa es un género de relevancia ecológica, con especies como la Caulerpa taxifolia, que es invasiva en el Mediterráneo, con un impacto negativo en varias plantas sub-acuáticas nativas, pero poco se sabe acerca de la demografía y la dinámica poblacional de las especies de Caulerpa y su contribución a las redes alimenticias. El objetivo general es conocer la demografía de Caulerpa sp., por medio del número de estolones, frondas completas e incompletas, el diámetro de los estolones y la biomasa. El estudio se realizó en la Reserva de la Biosfera de Los Petenes, en Campeche, México. La Vegetación Acuática Sumergida (VAS en la Biosfera de los Petenes está constituida por poblaciones tanto monoespecíficas como mixtas de las especies de pastos marinos Thalassia testudinum, Halodule wrightii y Syringodium filiforme. Aunque las especies de algas clorófitas, feofitas y rodófitas son elementos fundamentales de la VAS, destacan por su cobertura y abundancia las especies de Caulerpa. En mayo y junio del 2010, hubo diferencias significativas de la cantidad de estolones, su diámetro, frondas completas e incompletas y el tamaño de los estolones como el de los ejes erectos. En el 2010 el valor de la tasa finita de crecimiento poblacional (l fue de 2.38±0.15 con el método de las marcas y con el de la biomasa 1.20±0.13 y en el 2011 los valores fueron de 1.80±0.36 con las marcas y de 1.35±0.15 con la biomasa. Los resultados indican que la población está creciendo, pero es controlada por factores bióticos y abióticos. A pesar de que no se detecta la especie como una amenaza aparente, sugerimos que se continúen estos estudios demográficos sobre C. paspaloides var. wurdemannii e incluso de otras especies del mismo género. No solo

Temperature of the Gulf Stream

Science.gov (United States)

2002-01-01

The Gulf Stream is one of the strong ocean currents that carries warm water from the sunny tropics to higher latitudes. The current stretches from the Gulf of Mexico up the East Coast of the United States, departs from North America south of the Chesapeake Bay, and heads across the Atlantic to the British Isles. The water within the Gulf Stream moves at the stately pace of 4 miles per hour. Even though the current cools as the water travels thousands of miles, it remains strong enough to moderate the Northern European climate. The image above was derived from the infrared measurements of the Moderate-resolution Imaging Spectroradiometer (MODIS) on a nearly cloud-free day over the east coast of the United States. The coldest waters are shown as purple, with blue, green, yellow, and red representing progressively warmer water. Temperatures range from about 7 to 22 degrees Celsius. The core of the Gulf Stream is very apparent as the warmest water, dark red. It departs from the coast at Cape Hatteras, North Carolina. The cool, shelf water from the north entrains the warmer outflows from the Chesapeake and Delaware Bays. The north wall of the Gulf Stream reveals very complex structure associated with frontal instabilities that lead to exchanges between the Gulf Stream and inshore waters. Several clockwise-rotating warm core eddies are evident north of the core of the Gulf Stream, which enhance the exchange of heat and water between the coastal and deep ocean. Cold core eddies, which rotate counter clockwise, are seen south of the Gulf Stream. The one closest to Cape Hatteras is entraining very warm Gulf Stream waters on its northwest circumference. Near the coast, shallower waters have warmed due to solar heating, while the deeper waters offshore are markedly cooler (dark blue). MODIS made this observation on May 8, 2000, at 11:45 a.m. EDT. For more information, see the MODIS-Ocean web page. The sea surface temperature image was created at the University of Miami using

Thermohaline circulation in the Gulf of California

Science.gov (United States)

Bray, N. A.

1988-05-01

The Gulf of California, a narrow, semienclosed sea, is the only evaporative basin of the Pacific Ocean. As a result of evaporative forcing, salinities in the gulf are 1 to 2 ‰ higher than in the adjacent Pacific at the same latitude. This paper examines the thermohaline structure of the gulf and the means by which thermohaline exchange between the Pacific and the gulf occurs, over time scales of months to years. In addition to evaporative forcing, air-sea heat fluxes and momentum fluxes are important to thermohaline circulation in the gulf. From observations presented here, it appears that the gulf gains heat from the atmosphere on an annual average, unlike the Mediterranean and Red seas, which have comparable evaporative forcing. As a result, outflow from the gulf tends to be less dense than inflow from the Pacific. Winds over the gulf change direction with season, blowing northward in summer and southward in winter. This same seasonal pattern appears in near-surface transports averaged across the gulf. The thermohaline circulation, then, consists of outflow mostly between about 50 m and 250 m, inflow mostly between 250 m and 500 m, and a surface layer in which the direction of transport changes with seasonal changes in the large-scale winds. Using hydrographic observations from a section across the central gulf, total transport in or out of the northern gulf is estimated to be 0.9 Sv, heat gain from the atmosphere is estimated to be 20 to 50 W m-2, and evaporation is estimated to be 0.95 m yr-1. These estimates are annual averages, based on cruises from several years. Seasonal variations in thermohaline structure in the gulf are also examined and found to dominate the variance in temperature and density in the top 500 m of the water column. Salinity has little seasonal variability but does exhibit more horizontal variablility than temperature or density. Major year-to-year variations in thermohaline structure may be attributable to El Niño-Southern Oscillation

76 FR 69136 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2011-11-08

... interim measures to reduce overfishing of gag in the Gulf of Mexico (Gulf) implemented by a temporary rule... overfishing of gag in the Gulf by reducing the commercial quota for gag and, thus, the combined commercial... this rule is to reduce overfishing of the gag resource in the Gulf. [[Page 69137

77 FR 2960 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2012-01-20

... the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of Mexico; Exempted... and retention. This study, to be conducted in the exclusive economic zone (EEZ) of the Gulf of Mexico (Gulf) off Louisiana, is intended to better document the age structure and life history of fish...

77 FR 30507 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2012-05-23

... the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of Mexico; Exempted... and retention. This study, to be conducted in the exclusive economic zone (EEZ) of the Gulf of Mexico (Gulf), is intended to better document the age structure and life history of fish associated with...

Beyond the Gulf Metropolises

DEFF Research Database (Denmark)

Wippel, Steffen

2013-01-01

The extended studies on urbanisation in the Gulf region that came up in the early 2000s concentrated on the main centres with their worldwide-admired mega-projects and branding strategies. Only rather recently did a more general interest arise in the second-tier range of Gulf cities, which also s...

Modelo geoestadístico y geotécnico de la generación de emanaciones de hidrocarburos en el fondo marino de la Sonda de Campeche, México

OpenAIRE

Galván-García, E; Auvinet-Guichard, G

2011-01-01

Este artículo presenta un modelo de la formación de emanaciones de hidrocarburos en el fondo marino del Campo Cantarell en la Sonda de Campeche. El análisis se llevó a cabo recurriendo a la geoestadística y la geotecnia. Con la geoestadística, se estimó el espesor del estrato de suelo blando que constituye el fondo marino y se evaluó la variación espacial de las características físicas y mecánicas del suelo. Se encontró que la resistencia al corte del suelo se comporta como un "ruido blanco" ...

Gulf Coast Ecosystem Restoration Task Force---Gulf of Mexico Ecosystem Science Assessment and Needs

Science.gov (United States)

Walker, Shelby; Dausman, Alyssa M.; Lavoie, Dawn L.

2012-01-01

The Gulf Coast Ecosystem Restoration Task Force (GCERTF) was established by Executive Order 13554 as a result of recommendations from “America’s Gulf Coast: A Long-term Recovery Plan after the Deepwater Horizon Oil Spill” by Secretary of the Navy Ray Mabus (Mabus Report). The GCERTF consists of members from 11 Federal agencies and representatives from each State bordering the Gulf of Mexico. The GCERTF was charged to develop a holistic, long-term, science-based Regional Ecosystem Restoration Strategy for the Gulf of Mexico. Federal and State agencies staffed the GCERTF with experts in fields such as policy, budgeting, and science to help develop the Strategy. The Strategy was built on existing authorities and resources and represents enhanced collaboration and a recognition of the shared responsibility among Federal and State governments to restore the Gulf Coast ecosystem. In this time of severe fiscal constraints, Task Force member agencies and States are committed to establishing shared priorities and working together to achieve them.As part of this effort, three staffers, one National Oceanic and Atmospheric Administration (NOAA) scientist and two U.S. Geological Survey (USGS) scientists, created and led a Science Coordination Team (SCT) to guide scientific input into the development of the Gulf of Mexico Regional Ecosystem Restoration Strategy. The SCT leads from the GCERTF coordinated more than 70 scientists from the Federal and State Task Force member agencies to participate in development of a restoration-oriented science document focused on the entire Gulf of Mexico, from inland watersheds to the deep blue waters. The SCT leads and scientists were organized into six different working groups based on expanded goals from the Mabus Report: Coastal habitats are healthy and resilient.Living coastal and marine resources are healthy, diverse, and sustainable.Coastal communities are adaptive and resilient.Storm buffers are sustainable.Inland habitats and

Home Bodies and Wanderers: Sympatric Lineages of the Deep-Sea Black Coral Leiopathes glaberrima.

Directory of Open Access Journals (Sweden)

Dannise V Ruiz-Ramos

Full Text Available Colonial corals occur in a wide range of marine benthic habitats from the shallows to the deep ocean, often defining the structure of their local community. The black coral Leiopathes glaberrima is a long-lived foundation species occurring on carbonate outcrops in the Northern Gulf of Mexico (GoM. Multiple color morphs of L. glaberrima grow sympatrically in the region. Morphological, mitochondrial and nuclear ribosomal markers supported the hypothesis that color morphs constituted a single biological species and that colonies, regardless of color, were somewhat genetically differentiated east and west of the Mississippi Canyon. Ten microsatellite loci were used to determine finer-scale population genetic structure and reproductive characteristics. Gene flow was disrupted between and within two nearby (distance = 36.4 km hardground sites and two sympatric microsatellite lineages, which might constitute cryptic species, were recovered. Lineage one was outbred and found in all sampled locations (N = 5 across 765.6 km in the Northern Gulf of Mexico. Lineage two was inbred, reproducing predominantly by fragmentation, and restricted to sites around Viosca Knoll. In these sites the lineages and the color phenotypes occurred in different microhabitats, and models of maximum entropy suggested that depth and slope influence the distribution of the color phenotypes within the Vioska Knolls. We conclude that L. glaberrima is phenotypically plastic with a mixed reproductive strategy in the Northern GoM. Such strategy might enable this long-lived species to balance local recruitment with occasional long-distance dispersal to colonize new sites in an environment where habitat is limited.

Ictiofauna de sistemas cárstico-palustres con impacto antrópico: los petenes de Campeche, México

Directory of Open Access Journals (Sweden)

Ivette Liliana Torres-Castro

2009-06-01

Full Text Available Los petenes son pequeños manantiales y arroyos asociados que drenan a sistemas palustres en áreas cársticas costeras. Se estudió la composición, distribución y abundancia de la ictiofauna en dos petenes del noroeste de Campeche, en el manantial principal, el arroyo asociado, y pequeños ojos de agua secundarios (temporales, en dos épocas del año. Se registraron variables ambientales y tipos de impacto antrópico en cada petén. Se encontraron en total 27 especies de peces, con extensiones de ámbito de ‘Cichlasoma’ salvini, Rivulus tenuis, Phallichthys fairweatheri, Xiphophorus hellerii y X. maculatus. La especie dominante en ambas épocas fue Astyanax (probables híbridos A. aeneus × altior en Hampolol, A. altior en El Remate. Hubo diferencia significativa en diversidad entre ambos petenes. El análisis de conglomerados diferenció dos agrupaciones dentro de cada petén: aguas permanentes y sitios temporales. Las variables ambientales (excepto salinidad presentaron diferencias significativas por sitio y época; un análisis de correspondencia canónica indicó que la distribución de los conjuntos de peces tuvo influencia de las variables ambientales en ambas temporadas. En términos de composición, los factores históricos juegan un papel en las diferencias ictiológicas entre ambos petenes, sobre todo por lo que concierne a la presencia de híbridos de Astyanax, así como Xiphophorus hellerii en el petén del sur (Hampolol y de Poecilia velifera en el petén del norte (El Remate.Ichthyofauna of karstic wetlands under anthropic impact: the "petenes" of Campeche, Mexico. "Petenes" are small springs and associated streams that drain into wetlands near the coast in karstic areas. We studied composition, distribution, and abundance of the ichthyofauna in Los Petenes region (northwest Campeche. Two petenes displaying different degrees and types of anthropic impact were selected, Hampolol and El Remate. Hampolol has a smaller area but

Major reproductive health characteristics in male Gulf War Veterans. The Danish Gulf War Study

DEFF Research Database (Denmark)

Ishøy, T; Andersson, A M; Suadicani, Poul Vilhelm

2001-01-01

The male reproductive system could have been affected by various hazardous agents and exposures during and in the aftermath of the Persian Gulf War scenario. We tested the hypothesis that, compared to controls, male Danish Gulf War Veterans would have adverse sex hormone levels, decreased fertility...

Population Structure, Abundance and Movement of Whale Sharks in the Arabian Gulf and the Gulf of Oman.

Science.gov (United States)

Robinson, David P; Jaidah, Mohammed Y; Bach, Steffen; Lee, Katie; Jabado, Rima W; Rohner, Christoph A; March, Abi; Caprodossi, Simone; Henderson, Aaron C; Mair, James M; Ormond, Rupert; Pierce, Simon J

2016-01-01

Data on the occurrence of whale sharks, Rhincodon typus, in the Arabian Gulf and Gulf of Oman were collected by dedicated boat surveys and via a public-sightings scheme during the period from 2011 to 2014. A total of 422 individual whale sharks were photo-identified from the Arabian Gulf and the northern Gulf of Oman during that period. The majority of sharks (81%, n = 341) were encountered at the Al Shaheen area of Qatar, 90 km off the coast, with the Musandam region of Oman a secondary area of interest. At Al Shaheen, there were significantly more male sharks (n = 171) than females (n = 78; X2 = 17.52, P 9 m individuals were visually assessed as pregnant. Connectivity among sharks sighted in Qatari, Omani and UAE waters was confirmed by individual spot pattern matches. A total of 13 identified sharks were re-sighted at locations other than that at which they were first sighted, including movements into and out of the Arabian Gulf through the Strait of Hormuz. Maximum likelihood techniques were used to model an estimated combined population for the Arabian Gulf and Gulf of Oman of 2837 sharks ± 1243.91 S.E. (95% C.I. 1720-6295). The Al Shaheen aggregation is thus the first site described as being dominated by mature males while the free-swimming pregnant females are the first reported from the Indian Ocean.

Danish Gulf War Veterans Revisited

DEFF Research Database (Denmark)

Nissen, Lars Ravnborg; Stoltenberg, Christian; Nielsen, Anni B Sternhagen

2016-01-01

OBJECTIVE: To examine the assumption that postdeployment incidence of sickness and other absence from work are higher among Gulf War Veterans compared with nonveterans. METHODS: A prospective registry study including a cohort of 721 Danish Gulf War Veterans and a control cohort of 3,629 nonveterans...... and nonveterans in the incidence rate of long-term sickness absence. After an initial short period (3 months) with elevated incidence rate of long-term absence from work among veterans, there was no difference between the cohorts. CONCLUSION: Among Danish Gulf War Veterans, no postdeployment increased risk...... outcomes and information on deployment history was studied using time-to-event analysis. The index date was the return date from the last deployment to the Gulf. The follow-up period was the time from index date until April 27, 2014. RESULTS: As the main finding, no difference was found between veterans...

MODELADO DE PARTÍCULAS PM10 Y PM2.5 MEDIANTE REDES NEURONALES ARTIFICIALES SOBRE CLIMA TROPICAL DE SAN FRANCISCO DE CAMPECHE, MÉXICO

Directory of Open Access Journals (Sweden)

Alberto Antonio Espinosa Guzmán

Full Text Available In this paper, a computational methodology based on Artificial Neural Networks (ANN was developed to estimate the index of PM10 and PM2.5 concentration in air of San Francisco de Campeche city. A three layer ANN architecture was trained using an experimental database composed by days of the week, time of day, ambient temperature, atmospheric pressure, wind speed, wind direction, relative humidity, and solar radiation. The best ANN architecture, composed by 30 neurons in hidden layer, was obtained using the Levenberg-Marquardt (LM optimization algorithm, logarithmic sigmoid and linear transfer functions. Model results generate predictions with a determination coefficient of 93.01% and 90.10% for PM2.5 and PM10, respectively. The proposed methodology can be implemented in several studies as public health, environmental studies, urban development, and degradation of historical monuments.

Monitoreo de la protección catódica a línea submarina No. 161 de 36"ø Rebombeo/Dos Bocas de la Región Marina Suroeste en la sonda de Campeche

OpenAIRE

Hernández Márquez, Joaquín Salvador

2002-01-01

Uno de los retos que existen en la actualidad dentro del ámbito de Pemex Exploración y Producción es la construcción de líneas submarinas dentro de la Sonda de Campeche en el Golfo de México, para el transporte de los hidrocarburos desde ese sitio hasta las instalaciones de Almacenamiento y Bombeo a los diferentes puntos de la Republica Mexicana. Así mismo, el mayor problema que se cuenta es cuando una vez hecha la construcción del ducto submarino que se debe de hacer pa...

Coastal sensitivity mapping of Gulf of Kachchh and Gulf of Cambay, India

Digital Repository Service at National Institute of Oceanography (India)

ManiMurali, R.; Boora, P.; Vethamony, P.

and managers of coastal zones are also useful for identifying sensitive resources before a spill occurs (Jenson, 1998). In this way, protection priorities could be identified and established and cleanup strategies could be designed in advance. To deal... regions to oil spills. This research focuses on improving information about coastal environment mapping from remote sensing and GIS technology to generate maps of environmental sensitivity index for oil spill in Gulf of Kachchh and Gulf of Cambay...

The United States and the Arab Gulf Monarchies

International Nuclear Information System (INIS)

Kechichian, J.A.

1999-01-01

The United States has enduring strategic interests in the Persian Gulf region. To understand these interests and the Usa policy towards the Arab Gulf Monarchies, the french institute of international relations (IFRI) proposes this document. The following chapters are detailed: the United States and the Arab Gulf Monarchies, overview, Chief Unites States Objective: Access to oil, re-evaluating United States Foreign Policy in the Gulf, the second term (Usa strategy). (A.L.B.)

Successful flow testing of a gas reservoir in 3,500 feet of water

International Nuclear Information System (INIS)

Shaughnessy, J.M.; Carpenter, R.S.; Coleman, R.A.; Jackson, C.W.

1992-01-01

The test of Viosca Knoll Block 957 Well No. 1 Sidetrack No. 2 was Amoco Production Co.'s deepest test from a floating rig. Viosca Knoll 957 is 115 miles southeast of New Orleans in 3,500 ft of water. The test, at a record water depth for the Gulf of Mexico, also set a world water-depth record for testing a gas reservoir. Safety to crew and the environmental were top priorities during the planning. A team consisting of drilling, completion, reservoir, and facilities engineers and a foreman were assigned to plan and implement the test. Early planning involved field, service company, and engineering groups. Every effort was made to identify potential problems and to design the system to handle them. This paper reports that the goals of the test were to determine reservoir properties and reservoir limits. Several significant challenges were involved in the well test. The reservoir was gas with a potentially significant condensate yield. The ability to dispose of the large volumes of produced fluids safely without polluting was critical to maintaining uninterrupted flow. Potential shut-in surface pressure was 6,500 psi. Seafloor temperature in 3,500 ft of water was 39 degrees F

77 FR 67303 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2012-11-09

... interim measures to reduce overfishing of gray triggerfish in the Gulf of Mexico (Gulf) implemented by a... rule is to reduce overfishing of the gray triggerfish resource in the Gulf while the Council develops... necessary, to reduce overfishing. On April 19, 2012, the Council requested that NMFS implement a temporary...

Behavior and trends for Zn in Saronikos Gulf

Directory of Open Access Journals (Sweden)

Chalkiadakis O.

2013-04-01

Full Text Available The study of Zn in the water column of Saronikos Gulf in Greece during a two year period between 2008 and 2010 added data to the available time series of metal data for this marine area since 1985. The Saronikos Gulf, is directly influenced by the Athens metropolitan area. The operation of the Wastewater Treatment Plant of Athens situated on the small island of Psitalia, in 1995, was considered to be the turning point in the efforts of de-pollution of the gulf. Major sources of pollution for the gulf include also the port of Piraeus, with intensive navigation and shipping activities and the significant industrial activity occurring along the coast of Attica. This study of dissolved and particulate Zn gave results consistent with previous studies of the area such as the prevalence of the dissolved form of Zn and the most affected areas being the smaller most enclosed Gulf of Elefsina and Psitalia Island near the wastewater outfall. However, the concentrations of Zn were below toxic levels for marine aquatic organisms. Furthermore, a clear decrease in the Eastern part of the gulf was exhibited as well as a more subtle decrease in the gulf of Elefsina. The levels of Zn in Saronikos Gulf were found comparable to those of other Greek coastal areas.

75 FR 21512 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2010-04-26

...: NMFS issues this final rule to implement Amendment 31 to the Fishery Management Plan for the Reef Fish Resources of the Gulf of Mexico (FMP) prepared by the Gulf of Mexico Fishery Management Council (Council... operation of the bottom longline component of the reef fish fishery in the eastern Gulf while maintaining...

Assessment of heavy metals pollution in bottom sediments of the Arabian Gulf after the Gulf War oil spill 1991

International Nuclear Information System (INIS)

Nasr, S.M.; Ahmed, M.H.; El-Raey, M.; Frihy, O.E.; Abdel Motti, A.

1999-01-01

The major objective of this study was to carry out a sequential geochemical extraction scheme for the partitioning of Fe, Mn, Co, Cu, Zn, Ni, Cr and Pb in the bottom sediments of the Arabian Gulf to detect any potential pollution impact on the gulf sediments following the 1991 gulf war oil spill, and to differentiate between anthropogenic inputs and natural background of heavy metals

All-Cause Mortality Among US Veterans of the Persian Gulf War

Science.gov (United States)

Kang, Han K.; Bullman, Tim

2016-01-01

Objective: We determined cause-specific mortality prevalence and risks of Gulf War deployed and nondeployed veterans to determine if deployed veterans were at greater risk than nondeployed veterans for death overall or because of certain diseases or conditions up to 13 years after conflict subsided. Methods: Follow-up began when the veteran left the Gulf War theater or May 1, 1991, and ended on the date of death or December 31, 2004. We studied 621   901 veterans who served in the 1990-1991 Persian Gulf War and 746   247 veterans who served but were not deployed during the Gulf War. We used Cox proportional hazard models to calculate rate ratios adjusted for age at entry to follow-up, length of follow-up, race, sex, branch of service, and military unit. We compared the mortality of (1) Gulf War veterans with non–Gulf War veterans and (2) Gulf War army veterans potentially exposed to nerve agents at Khamisiyah in March 1991 with those not exposed. We compared standardized mortality ratios of deployed and nondeployed Gulf War veterans with the US population. Results: Male Gulf War veterans had a lower risk of mortality than male non–Gulf War veterans (adjusted rate ratio [aRR] = 0.97; 95% confidence interval [CI], 0.95-0.99), and female Gulf War veterans had a higher risk of mortality than female non–Gulf War veterans (aRR = 1.15; 95% CI, 1.03-1.28). Khamisiyah-exposed Gulf War army veterans had >3 times the risk of mortality from cirrhosis of the liver than nonexposed army Gulf War veterans (aRR = 3.73; 95% CI, 1.64-8.48). Compared with the US population, female Gulf War veterans had a 60% higher risk of suicide and male Gulf War veterans had a lower risk of suicide (standardized mortality ratio = 0.84; 95% CI, 0.80-0.88). Conclusion: The vital status and mortality risk of Gulf War and non–Gulf War veterans should continue to be investigated. PMID:28123229

75 FR 74650 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2010-12-01

... issues this final temporary rule to implement interim measures to reduce overfishing of gag in the Gulf... this final temporary rule is to reduce overfishing of the gag resource in the Gulf. DATES: This rule is... rule is to reduce overfishing of the gag resource in the Gulf. No changes were made to this final rule...

Saudis map $450 million gulf spill cleanup

International Nuclear Information System (INIS)

Anon.

1991-01-01

This paper reports on Saudi Arabia which has earmarked about $450 million to clean up Persian Gulf beaches polluted by history's worst oil spills, created during the Persian Gulf crisis. Details of the proposed cleanup measures were outlined by Saudi environmental officials at a seminar on the environment in Dubai, OPEC News Agency reported. The seminar was sponsored by the Gulf Area Oil Companies Mutual Aid Organization, an environmental cooperative agency set up by Persian Gulf governments. Meantime, a Saudi government report has outlined early efforts designed to contain the massive oil spills that hit the Saudi coast before oil could contaminate water intakes at the huge desalination plants serving Riyadh and cooling water facilities at Al Jubail

Clinical Evaluation of a Proposed New Gulf War Syndrome

National Research Council Canada - National Science Library

Levine, Paul

2001-01-01

Thus far, studies on Gulf War veterans have not defined any syndrome specific to deployed Gulf War veterans, but have only suggested that Persian Gulf War veterans have a higher frequency of a number...

Curcumin Nanoparticle Therapy for Gulf War Illness

Science.gov (United States)

2017-10-01

AWARD NUMBER: W81XWH-16-1-0480 TITLE: Curcumin Nanoparticle Therapy for Gulf War Illness PRINCIPAL INVESTIGATOR: Ashok K. Shetty, Ph.D...Nanoparticle Therapy for Gulf War Illness 5a. CONTRACT NUMBER 5b. GRANT NUMBER W81XWH-16-1-0480 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) Ashok K...biodegradable polymer nanosystems (nCUR) for alleviating cognitive, memory and mood impairments in a rat model of gulf war illness (GWI). Specific

Sandwaves of the Gulf of Khambhat

Digital Repository Service at National Institute of Oceanography (India)

Vora, K.H.; Gujar, A.R.; Karisiddaiah, S.M.

In the Gulf of Khambhat (Gujarat, India) the best formed sandwaves are seen in the west close to the Eastern Sand Bank. With increasing clay content and clay cover of the sea bed, the sandwaves become poorly formed. In the southern part of the Gulf...

Gulf of Mexico production still recovering

International Nuclear Information System (INIS)

Koen, A.D.

1992-01-01

This paper reports that the extent of damage caused by Hurricane Andrew to Gulf of Mexico oil and gas installations continues coming into focus. A preliminary tally by Minerals Management Service offers a reasonably complete summary of gulf production and pipeline systems damage detectable at the surface. MMS requires Outer Continental Shelf operators to inspect for underwater damage all platforms, pipelines, risers, and other structures within an 85 mile corridor along the path of Andrew's eye as it churned through the gulf. OCS operators have until Oct. 16 to submit plans for the Level II surveys

76 FR 20957 - Gulf of Mexico Fishery Management Council; Public Meeting

Science.gov (United States)

2011-04-14

... exceeded for Gulf group king mackerel, Gulf group Spanish mackerel, and Gulf group cobia. It also contains... framework procedure, and separate cobia into Atlantic and Gulf migratory groups. Similar measures are being...

Pollution by petroleum hydrocarbons in sediments from continental shelf of Tabasco State, Mexico

International Nuclear Information System (INIS)

Botello, A.V.; Gonzalez, C.; Diaz, G.

1991-01-01

The Wider Caribbean is potentially one of the largest oil producing areas in the world. Major petroleum production areas include Louisiana and Texas, USA; the Bay of Campeche, Mexico; Lake Maracaibo, Venezuela; and Gulf of Paria, Trinidad; all of which are classified as production accident high-risk zones. About 5 million of barrels are transported every day in the Caribbean, thus generating an intense tanker traffic. It has been estimated that oil discharges from tank washings within the Wider Caribbean could be as high as 7 million barrels/year. For all those reasons petroleum pollution is considered as the major environmental problem in the Wider Caribbean area and increasing day to day due to the use of petroleum as the main energy source. On the other hand, the continental shelf of Tabasco state actually represents one of the most productive areas for crude oil in the Gulf of Mexico. Sediments were collected from this area and analyzed for hydrocarbons

Population dynamics and stock assessment for Octopus maya (Cephalopoda:Octopodidae fishery in the Campeche Bank, Gulf of Mexico

Directory of Open Access Journals (Sweden)

Francisco Arreguín-Sánchez

2000-06-01

Full Text Available The octopus (Octopus maya is one of the most important fish resources in the Mexican Gulf of Mexico with a mean annual yield of 9000 ton, and a reasonable number of jobs created; O. maya represents 80% of the total octopus catch, followed by Octopus vulgaris. There are two artisanal fleets based on Octopus maya and a middle-size fleet that covers both species. Catch-at-length structured data from the artisanal fleets, for the 1994 season (August 1st to December 15th were used to analyze the O. maya population dynamics and stock and to estimate the current level of exploitation. Von Bertalanffy growth parameters were: L = 252 mm, mantle length; K=1.4 year -1; oscillation parameters C=1.0, WP=0.6; and tz=0.842 years. A rough estimate of natural mortality was M=2.2, total mortality from catch curve Z=8.77, and exploitation rate F/Z=0.75. This last value suggests an intensive exploitation, even when yield per recruit analysis indicates both fleets may increase the minimum legal size on about 10% to increase yields. The length-based VPA also shows that the stock is being exploited under its maximum acceptable biological limit. These apparently contradictory results are explained by biological and behavioral characteristics of this species. Because most females die after reproduction, a new gross estimation of natural mortality was computed as M=3.3. The new estimate of exploitation rate was F/Z=0.57. This new value coincides with results from the length-VPA and the Thompson and Bell methods, the former suggesting that a reduction of 20% in fishing mortality may provide larger yields. This fishery resource is fully exploited and current management measures must be revised to sustain and probably optimize yields.Octopus maya es uno de los recursos pesqueros más importantes del Golfo de México, con rendimientos anuales promedio de 9 000 t, y constituye el 80% de la captura total, seguido por O. vulgaris. En la pesquería participan dos flotas

Gulf of Mexico deep-water

International Nuclear Information System (INIS)

Ott, G.L.

1998-01-01

The deepwater Gulf of Mexico, an emerging basin with 20 BBOE resource potential, was discussed. Technologies are advancing and development options are increasing within the Gulf of Mexico deepwater environment. Deepwater offers significant rate potentials leading to strong cash flows. The projected steep rate of resources captured in the next five years show that there is a short window of opportunity to establish a business position. The major production variables are development costs and cycle time. There is a definite market for Gulf of Mexico products because U.S. energy demand is expected to outstrip U.S. supply. Present infrastructure is capable of moving large volumes of gas into major U.S. markets, but with the large number of projects currently underway, especially in the United States, supply could exceed capacity. 1 tab., 16 figs

Probiotic (VSL 3) for Gulf War Illness

Science.gov (United States)

2016-10-01

Award Number: W81XWH-10-1-0593 TITLE: Probiotic (VSL#3) for Gulf War Illness. PRINCIPAL INVESTIGATOR: Ashok Tuteja, M.D. M.P.H. CONTRACTING...NUMBER Probiotic (VSL#3) for Gulf War Illness. 5b. GRANT NUMBER W81XWH-10-1-0593 5c. PROGRAM ELEMENT NUMBER 6 . AUTHOR(S) 5d. PROJECT NUMBER Ashok...intestinal symptoms (fatigue, joint pain, insomnia, general stiffness and headache) associated with IBS. All of these symptoms are part of the Gulf War

Gulf of Mexico development

International Nuclear Information System (INIS)

Krenz, D.

1998-01-01

In recent years, the Gulf of Mexico (GOM) has seen significant deepwater growth. An overview of the GOM deepwater leaseholds by Shell and developments by competing companies is presented. Deepwater GOM developments, total production from the shelf and from deepwater wells, new offshore pipeline capacity and ownership, and processing plant capacity are also discussed. Significant deepwater growth in the Gulf is anticipated. Despite significant economic and technological challenges, the area is judged to be the prime exploration and production opportunity in the lower 48 states of the USA. tabs., figs

76 FR 65321 - Gulf War Veterans' Illnesses Task Force

Science.gov (United States)

2011-10-20

... DEPARTMENT OF VETERANS AFFAIRS Gulf War Veterans' Illnesses Task Force AGENCY: Department of... Veterans Affairs (VA) established the Gulf War Veterans' Illnesses Task Force (GWVI-TF) in August 2009 to conduct a comprehensive review of VA's approach to and programs addressing 1990-1991 Gulf War Veterans...

78 FR 28292 - Gulf War Veterans' Illnesses Task Force

Science.gov (United States)

2013-05-14

... DEPARTMENT OF VETERANS AFFAIRS Gulf War Veterans' Illnesses Task Force AGENCY: Department of... Veterans Affairs (VA) established the Gulf War Veterans' Illnesses Task Force (GWVI-TF) in August 2009 to conduct a comprehensive review of VA's approach to and programs addressing 1990-1991 Gulf War Veterans...

75 FR 16577 - Gulf War Veterans' Illnesses Task Force

Science.gov (United States)

2010-04-01

... DEPARTMENT OF VETERANS AFFAIRS Gulf War Veterans' Illnesses Task Force AGENCY: Department of... Veterans Affairs (VA) established the Gulf War Veterans' Illnesses Task Force (GWVI-TF) in August 2009 to conduct a comprehensive review of VA's approach to and programs addressing 1990-1991 Gulf War Veterans...

50 CFR 226.214 - Critical habitat for Gulf sturgeon.

Science.gov (United States)

2010-10-01

... ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS DESIGNATED CRITICAL HABITAT § 226.214... Sound or the Gulf of Mexico. The Withlacoochee River main stem from Florida State Road 6, Madison and...) Unit 11: Florida Nearshore Gulf of Mexico Unit in Escambia, Santa Rosa, Okaloosa, Walton, Bay, and Gulf...

Western Gulf of Mexico lease sale draws weak response

International Nuclear Information System (INIS)

Koen, A.D.

1992-01-01

This paper reports that puny participation in the federal lease sale for the western Gulf of Mexico reflected a lack of open acreage on attractive prospects and the crisis sweeping the U.S. offshore oil and gas industry. Thirty-eight companies participating in the Minerals Management Service's Outer Continental Shelf Sale 141 offered 81 bids for 61 tracts in the western gulf planning area. That was the fewest bids offered in a western gulf sale since operators offered 52 bids for 41 tracts at Sale 105 in August 1986. The only Gulf of Mexico minerals sale to attract less bonus money was the MMS sulfur and salt sale in the central gulf in February 1988 in which $20.8 million was exposed

Plutonium in the Gulf of Mexico

International Nuclear Information System (INIS)

Scott, M.R.; Salter, P.F.

The geochemistry of fallout plutonium in the sediments of the Gulf of Mexico was studied. A series of sediment cores was collected in a traverse from the deep Gulf of Mexico to the Mississippi Delta. The cores were sliced into 1 cm intervals and analyzed for plutonium. Explanations for the variations in concentration are presented

Water masses in the Gulf of Aden

Digital Repository Service at National Institute of Oceanography (India)

Al Saafani, M.A.; Shenoi, S.S.C.

Hydrographic data collected from Gulf of Aden since 1920 have been compiled to identify and refine the definitions of water masses in the Gulf of Aden (GA) and to describe their spatio-temporal variability. Four water masses have been identified...

Fishery potential of the Gulf of Kachchh

Digital Repository Service at National Institute of Oceanography (India)

Nair, V.R.; Govindan, K.; Ramaiah, Neelam; Gajbhiye, S.N.

Fishery potential of the interior Gulf of Kachchh and adjacent creek regions was reported for the first time as baseline data for future ecological assessment. The experimental trawling and gill netting indicated that the inner Gulf (av. 7.8 kg...

GULF OF MEXICO AQUATIC MORTALITY NETWORK (GMNET)

Science.gov (United States)

Five U.S. states share the northern coast of the Gulf, and each has a program to monitor mortalities of aquatic organisms (fish, shellfish, birds). However, each state has different standards, procedures, and documentation of mortality events. The Gulf of Mexico Aquatic Mortality...

ENTREPRENEURSHIP IN PROVIDERS OF FARMING PROFESSIONAL SERVICES OF THE STATE OF CAMPECHE, MEXICO

Directory of Open Access Journals (Sweden)

Benjamín Figueroa-Rodríguez

2010-09-01

Full Text Available Entrepreneurship, defined as the ability or competence to generate and create new business initiatives has its relevance on the economic and territorial development. Nowadays, state governments seek to support farmers in the development of their entrepreneurship skills based on a network of providers of farming professionals services (PSP. The objective of the article was to analyze the construction of the entrepreneurship concept based on self-perception affirmations (positive attitudes and the characteristics of the PSP (age and years on service. A questionnaire with 60 affirmations, using a 6-point Likert-type scale (0 to 6, was applied to 105 PSP of the state of Campeche, México; from which only 71 observations were complete and useful for creating an individual entrepreneurship index. The index was the product of the addition of the total of scores of each item, where 0 was the minimum and 360 the maximum possible (M= 279.23, DE= 35.30, Min= 62, Max= 339. With the aim to reduce the 60 variables, a factor analysis was carried out and 14 constructs were developed; only two phrases were left independent as well as the age and years of service as a PSP. This all were used to run a hierarchical regression analysis. Results show that the variables of persistence, innovation, self-esteem, independence, commitment and “I’d rather be alone”, as well as other characteristics, were positively and significantly related to higher levels of entrepreneurship (p<0.001, whilst the variables that did not explain it were undergoing risk and taking the initiative. Age and years of experience were not significant associated with the level of entrepreneurship. It was concluded that positive attitudes are important in explaining entrepreneur self-perception, on the contrary age or experience as a PSP seems to be irrelevant. The implication of the study for the states governments is to stimulate the development of projects that imply the use of business

Fish larvae from the Gulf of California

Directory of Open Access Journals (Sweden)

Gerardo Aceves-Medina

2003-03-01

Full Text Available Taxonomic composition of fish larvae was analysed from 464 plankton samples obtained during 10 oceanographic surveys in the Gulf of California between 1984 and 1988. We identified 283 taxa: 173 species, 57 genera, and 53 families. Tropical and subtropical species predominated except during the winter, when temperate-subarctic species were dominant. The most abundant species were the mesopelagic Benthosema panamense, Triphoturus mexicanus and Vinciguerria lucetia, but the coastal pelagic species Engraulis mordax, Opisthonema spp., Sardinops caeruleus and Scomber japonicus were also prominent. The taxonomic composition of the ichthyoplankton shows the seasonality of the Gulf as well as environmental changes that occurred between the 1984-1987 warm period and the 1956-1957 cool period previously reported. The presence of E. mordax larvae as one of the most abundant species in the Gulf provides evidence of the reproduction of this species two years before the development of the northern anchovy fishery and the decline of the sardine fishery in the Gulf of California.

Influence of the Gulf Stream on the troposphere.

Science.gov (United States)

Minobe, Shoshiro; Kuwano-Yoshida, Akira; Komori, Nobumasa; Xie, Shang-Ping; Small, Richard Justin

2008-03-13

The Gulf Stream transports large amounts of heat from the tropics to middle and high latitudes, and thereby affects weather phenomena such as cyclogenesis and low cloud formation. But its climatic influence, on monthly and longer timescales, remains poorly understood. In particular, it is unclear how the warm current affects the free atmosphere above the marine atmospheric boundary layer. Here we consider the Gulf Stream's influence on the troposphere, using a combination of operational weather analyses, satellite observations and an atmospheric general circulation model. Our results reveal that the Gulf Stream affects the entire troposphere. In the marine boundary layer, atmospheric pressure adjustments to sharp sea surface temperature gradients lead to surface wind convergence, which anchors a narrow band of precipitation along the Gulf Stream. In this rain band, upward motion and cloud formation extend into the upper troposphere, as corroborated by the frequent occurrence of very low cloud-top temperatures. These mechanisms provide a pathway by which the Gulf Stream can affect the atmosphere locally, and possibly also in remote regions by forcing planetary waves. The identification of this pathway may have implications for our understanding of the processes involved in climate change, because the Gulf Stream is the upper limb of the Atlantic meridional overturning circulation, which has varied in strength in the past and is predicted to weaken in response to human-induced global warming in the future.

77 FR 18307 - Gulf War Veterans' Illnesses Task Force Report

Science.gov (United States)

2012-03-27

... DEPARTMENT OF VETERANS AFFAIRS Gulf War Veterans' Illnesses Task Force Report AGENCY: Department...) established the Gulf War Veterans' Illnesses Task Force (GWVI-TF) in August 2009 to conduct a comprehensive review of VA policies and programs addressing 1990-1991 Gulf War Veterans' illnesses. The GWVI-TF...

[Distribution of Ecteinascidia turbinata (Ascidiacea: Perophoridae) in mangroves of the Yucatán Peninsula, Mexico].

Science.gov (United States)

Carballo, J L

2000-01-01

The ascidian Ecteinascidia turbinata synthesizes some of the most promising substances against solid-type tumors, but the only available source are the natural populations of this tunicate, which is reared or collected in different parts of the world. A total of 33 locations were sampled in the Gulf of Mexico and the Yucatan Peninsula. The tunicate was not found in Veracruz, Tabasco and Campeche, but it was well established on mangrove roots in the Yucatan Peninsula where we estimated densities more or less equal to one colony and an average production of 115 g of biomass per lineal meter of mangrove coastline in one location (Río Lagartos). Sustainable management appears to be possible.

US Gulf operators take the long view

International Nuclear Information System (INIS)

Flatern, Rick von

1999-01-01

Oil projects in the Gulf of Mexico have suffered from the crash in oil prices in the mid-1980s, however as these projects tend to be long-term and therefore less sensitive to current oil prices, many are continuing to be funded. It is now believed by deepwater exploration operators that the Gulf of Mexico may be one of the world's most promising sources of new reserves. This article analyses the likely future exploration of deepwater reserves by major companies such as Shell, noted for its capital intensive and technologically innovative activity in the Gulf, as well as the newer, smaller independent operators. (UK)

76 FR 59102 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf...

Science.gov (United States)

2011-09-23

... Atlantic; Spiny Lobster Fishery of the Gulf of Mexico and South Atlantic; Amendment 10 AGENCY: National... Fishery Management Plan for the Spiny Lobster Fishery of the Gulf of Mexico and South Atlantic (FMP), as... implemented, this rule would revise the lobster species contained within the fishery management unit...

76 FR 75488 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf...

Science.gov (United States)

2011-12-02

... Atlantic; Spiny Lobster Fishery of the Gulf of Mexico and South Atlantic; Amendment 10 AGENCY: National... Plan for the Spiny Lobster Fishery of the Gulf of Mexico and South Atlantic (FMP), as prepared and... the lobster species contained within the fishery management unit; establishes an annual catch limit...

9 CFR 94.15 - Animal products and materials; movement and handling.

Science.gov (United States)

2010-01-01

... California, Baja California Sur, Campeche, Chihuahua, Coahuila, Nuevo Leon, Quintana Roo, Sinaloa, Sonora... Inspección Federal plant in Baja California, Baja California Sur, Campeche, Chihuahua, Coahuila, Nuevo Leon...) from Baja California, Baja California Sur, Campeche, Chihuahua, Nuevo Leon, Quintana Roo, Sinaloa...

Gulf Shrimp System

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Gulf of Mexico Shrimp Landings - This data set contains catch (landed catch) and effort for fishing trips made by the larger vessels that fish near and offshore for...

Continental breakup by oblique extension: the Gulf of California

Science.gov (United States)

van Wijk, J.; Axen, G. J.

2017-12-01

We address two aspects of oblique extension: 1) the evolution of pull-apart basins, and how/when they may evolve into seafloor spreading segments; and 2) the formation of microcontinents. The Gulf of California formed by oblique extension. Breakup resulted in oceanic crust generation in the southern and central parts, while in the northern Gulf/Salton Trough a thick layer of (meta-)sediments overlies thinned continental crust. We propose a simple mechanism to explain this N-S variation. We assume that oblique rifting of the proto-Gulf province resulted in pull-apart basins, and use numerical models to show that such pull-apart basins do not develop into seafloor spreading segments when their length-to-width ratios are small, as is the case in the northern Gulf. In the central and southern Gulf the length-to-width ratios were larger, promoting continent rupture. The mechanisms behind this fate of pull-apart basins will be discussed in the presentation. In the southern Gulf, potential field models show that the Tamayo Bank in the southern Gulf is likely a microcontinent, separated from the main continent by the Tamayo trough. The thickness of the ocean crust in the Tamayo trough is anomalously small, suggesting that initial seafloor spreading was magma-starved and unsuccessful, causing the location of rifting and seafloor spreading to jump. As a consequence a sliver of continent broke off, forming the microcontinent. We suggest that worldwide this may be a common process for microcontinent formation.

Epidemiological Studies Persian Gulf War Illnesses Persian Gulf Women's Health Linkage Study

National Research Council Canada - National Science Library

Klemm, Rebecca

1997-01-01

The Persian Gulf Women's Health Linkage Study will provide baseline health and risk factor information to estimate the prevalence of selected health conditions, with an emphasis on reproductive health...

76 FR 54727 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf...

Science.gov (United States)

2011-09-02

... RIN 0648-AY72 Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of...) have submitted Amendment 10 to the Fishery Management Plan for the Spiny Lobster Fishery of the Gulf of... actions to revise the lobster species contained within the fishery management unit; revise definitions of...

Free and forced Rossby normal modes in a rectangular gulf of arbitrary orientation

Science.gov (United States)

Graef, Federico

2016-09-01

A free Rossby normal mode in a rectangular gulf of arbitrary orientation is constructed by considering the reflection of a Rossby mode in a channel at the head of the gulf. Therefore, it is the superposition of four Rossby waves in an otherwise unbounded ocean with the same frequency and wavenumbers perpendicular to the gulf axis whose difference is equal to 2mπ/W, where m is a positive integer and W the gulf's width. The lower (or higher) modes with small m (or large m) are oscillatory (evanescent) in the coordinate along the gulf; these are elucidated geometrically. However for oceanographically realistic parameter values, most of the modes are evanescent. When the gulf is forced at the mouth with a single Fourier component, the response is in general an infinite sum of modes that are needed to match the value of the streamfunction at the gulf's entrance. The dominant mode of the response is the resonant one, which corresponds to forcing with a frequency ω and wavenumber normal to the gulf axis η appropriate to a gulf mode: η =- β sin α/(2ω) ± Mπ/W, where α is the angle between the gulf's axis and the eastern direction (+ve clockwise) and M the resonant's mode number. For zonal gulfs ω drops out of the resonance condition. For the special cases η = 0 in which the free surface goes up and down at the mouth with no flow through it, or a flow with a sinusoidal profile, resonant modes can get excited for very specific frequencies (only for non-zonal gulfs in the η = 0 case). The resonant mode is around the annual frequency for a wide range of gulf orientations α ∈ [40°, 130°] or α ∈ [220°, 310°] and gulf widths between 150 and 200 km; these include the Gulf of California and the Adriatic Sea. If η is imaginary, i.e. a flow with an exponential profile, there is no resonance. In general less modes get excited if the gulf is zonally oriented.

Northern Gulf Littoral Initiative (NGLI), Geology and Physical Properties of Marine Sediments in the N.E. Gulf of Mexico: Data Report

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The Northern Gulf Littoral Initiative (NGLI), Geology and Physical Properties of Marine Sediments in the N.E. gulf of Mexico: Data Report, was produced by the U.S....

77 FR 25116 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf...

Science.gov (United States)

2012-04-27

...-BB44 Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Spiny Lobster Fishery of the Gulf... (Councils) have submitted Amendment 11 to the Fishery Management Plan for the Spiny Lobster Fishery of the... proposes to limit spiny lobster fishing using trap gear in certain areas in the exclusive economic zone off...

Gulf operators resuming production

International Nuclear Information System (INIS)

Koen, A.D.

1992-01-01

This paper reports that Gulf of Mexico operators last week were gradually restoring production at installations struck by Hurricane Andrew. The Minerals Management Service continued receiving reports of more damage. By the end of the day Sept. 8, MMS had received reports of damage to 83 pipeline segments and 193 platforms and satellite installations. Damage reports listed 112 installations with structural damage, 13 platforms toppled and five leaning, and 30 satellite platforms toppled and 33 leaning. But despite the extent of damage the storm inflicted on oil and gas installations in the gulf, it pales in comparison to the misery and suffering the storm caused in Florida and Louisiana, an oil company official said

75 FR 63786 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2010-10-18

... interim measures to reduce overfishing of gag in the Gulf of Mexico (Gulf). This proposed rule would... Fishery Management Council (Council). The intended effect of this proposed rule is to reduce overfishing... Act requires NMFS and regional fishery management councils to prevent overfishing and achieve, on a...

75 FR 63780 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2010-10-18

... shallow water grouper (SWG) species, and require vessels with valid commercial Gulf of Mexico (Gulf) reef... that the stock continues to be neither overfished nor undergoing overfishing. However, this update... migratory species (HMS) species and relatively less dependent on landings of deep-water grouper species. On...

ECOLOGICAL NICHE MODELING AND WILDLIFE MANAGEMENT UNITS (UMAS: AN APPLICATION TO DEER IN CAMPECHE, MÉXICO

Directory of Open Access Journals (Sweden)

Tania Escalante

2013-08-01

Full Text Available The Units for the Conservation, Management and Sustainable Use of Wildlife (UMAs are instruments of conservation and management of specific species in Mexico. UMAs represent in southeastern Mexico an important way for deer management, but they have major problems related to the monitoring of species. In this paper, we propose a methodology based on the use of a ‘niche centroid approach’ for estimating ecological distances to the niche centroid in order to produce distribution maps containing information on the potential relative abundance of species to evaluate the capability of UMAs to maintain populations of deers. We modeled the abundance for Mazama temama, M. pandora and Odocoileus virginianus on the state of Campeche, Mexico. Our predictions of areas with most abundance of deer coincided with reports from literature. We identified the UMAs “Ik Balam” and “Ejido Carlos Cano Cruz” as areas with high proportion of suitable environment, while UMAs “Betito y Lupita”, “El Huanal”, “Puh”, “Refugio faunístico Jalotum”, “Ría Lagartos-Ría Celestun” and “Yocol Cab Balam” have not environmental conditions adequate to maintain deer populations. Although this is a preliminary study, it can be a starting point to establish institutional standards for the management of species.

Sea snakes (Elapidae, Hydrophiinae) in their westernmost extent: an updated and illustrated checklist and key to the species in the Persian Gulf and Gulf of Oman

Science.gov (United States)

Rezaie-Atagholipour, Mohsen; Ghezellou, Parviz; Hesni, Majid Askari; Dakhteh, Seyyed Mohammad Hashem; Ahmadian, Hooman; Vidal, Nicolas

2016-01-01

Abstract The Persian Gulf is known as the westernmost distribution limit for sea snakes, except for Hydrophis platurus (Linnaeus, 1766) that reaches southeastern Africa. Previous identification guides for sea snakes of the Persian Gulf and its adjacent waters in the Gulf of Oman were based on old data and confined mostly to written descriptions. Therefore, a series of field surveys were carried out in 2013 and 2014 through Iranian coastal waters of both gulfs to provide a comprehensive sampling of sea snakes in the area. This paper presents an illustrated and updated checklist and identification tool for sea snakes in the Persian Gulf and Gulf of Oman, which are based on new material and a review of the literature. This checklist includes ten species of marine hydrophiines, of which one, Microcephalophis cantoris (Günther, 1864), is a new record for the area. All specimens examined herein are deposited and available at the Zoological Museum of Shahid Bahonar University of Kerman, Kerman province, Iran. PMID:27843383

75 FR 64171 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2010-10-19

... prevent overfishing of Gulf greater amberjack. DATES: Closure is effective 12:01 a.m., local time, October... harvest to the quota is crucial to meeting the legal requirements to prevent and end overfishing and.... This closure is intended to prevent overfishing of Gulf greater amberjack and increase the likelihood...

77 FR 8810 - Gulf of Mexico Fishery Management Council; Public Meetings

Science.gov (United States)

2012-02-15

.... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Law Enforcement Advisory... East Beach Blvd., Gulfport, MS 39501. Council address: Gulf of Mexico Fishery Management Council, 2203..., Deputy Executive Director, Gulf of Mexico Fishery Management Council; telephone: (813) 348-1630...

75 FR 7444 - Gulf of Mexico Fishery Management Council; Public Meetings

Science.gov (United States)

2010-02-19

.... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Law Enforcement Advisory...., Orange Beach, AL 36561. Council address: Gulf of Mexico Fishery Management Council, 2203 North Lois... Director, Gulf of Mexico Fishery Management Council; telephone: (813) 348-1630. SUPPLEMENTARY INFORMATION...

Deep-water northern Gulf of Mexico hydrocarbon plays

International Nuclear Information System (INIS)

Peterson, R.H.; Cooke, D.W.

1995-01-01

The geologic setting in the deep-water (depths greater than 1,500 feet) Gulf of Mexico is very favorable for the existence of large, commercial hydrocarbon accumulations. These areas have active salt tectonics that create abundant traps, underlying mature Mesozoic source rocks that can be observed expelling oil and gas to the ocean surface, and good quality reservoirs provided by turbidite sand deposits. Despite the limited amount of drilling in the deep-water Gulf of Mexico, 11 deep-water accumulations have been discovered which, when developed, will rank in the top 100 largest fields in the Gulf of Mexico. Proved field discoveries (those with announced development plans) have added over 1 billion barrels of oil equivalent to Gulf of Mexico reserves, and unproved field discoveries may add to additional billion barrels of oil equivalent. The Minerals Management Service, United States Department of the Interior, has completed a gulf-wide review of over 1,086 oil and gas fields and placed every pay sand in each field into a hydrocarbon play (plays are defined by chronostratigraphy, lithostratigraph, structure, and production). Seven productive hydrocarbon plays were identified in the deep-water northern Gulf of Mexico. Regional maps illustrate the productive limits of each play. In addition, field data, dry holes, and wells with sub-economic pay were added to define the facies and structural limits for each play. Areas for exploration potential are identified for each hydrocarbon play. A type field for each play is chosen to demonstrate the play's characteristics

The Gulf of Mexico research initiative: It takes a village

Science.gov (United States)

Colwell, Rita R.

2016-07-01

The Gulf of Mexico Research Initiative (GoMRI) was established at the time of one of the most significant ecological events in recent memory, the Deepwater Horizon oil spill. Defined by the discharge of over 150 million gallons of crude oil and the introduction of over 1.8 million gallons of chemical dispersants into the Gulf system, the impacts of the Deepwater Horizon disaster reached the Gulf Coast's wetlands and beaches and impacted the surface and deep ocean. The ecological story of the event reveals a strong linkage between the deep sea research community and research priorities in the Gulf of Mexico (coastal processes, human health, etc.). Deep Sea research efforts have revealed critical parts of the story, providing information on transport, fate, and effects of the Deepwater Horizon oil release and subsequent recovery of the Gulf of Mexico ecosystems.

Gulf War Syndrome: a review of current knowledge and understanding.

Science.gov (United States)

Minshall, D

2014-01-01

The 1991 Persian Gulf War was a resounding military success for coalition forces, who liberated Kuwait following the Iraqi invasion. The medical legacy we have from the conflict is the poorly understood, yet remarkable, phenomenon of Gulf War Syndrome, which surfaced soon after. Epidemiological research has proven beyond doubt that Gulf War veterans report a wide variety of symptoms, in excess of appropriately matched control subjects, and experience worse general health. Numerous toxic environmental hazards have been suggested as causes of Gulf War Syndrome, yet exhaustive scientific study has failed to provide conclusive proof of any link. No novel or recognised disease has been found to account for the symptomatic burden of veterans, and the optimal treatment remains uncertain. This understanding can be added to from an anthropological perspective, where the narratives of those afflicted provide further insight. The nature of military life was changing at the time of the Gulf War, challenging the identity and beliefs of some veterans and causing socio-cultural distress. The symptomatic presentation of Gulf War Syndrome can be considered an articulation of this disharmony. Gulf War Syndrome can also be considered within the group of post-combat disorders such as shellshock, the like of which have occurred after major wars in the last century. With the current withdrawal from Afghanistan, the Defence Medical Services (DMS) should heed the lessons of history.

Crust and mantle of the gulf of Mexico

Science.gov (United States)

Moore, G.W.

1972-01-01

A SEEMING paradox has puzzled investigators of the crustal structure of the Gulf of Mexico since Ewing et al.1 calculated that a unit area of the rather thick crust in the gulf contains less mass than does a combination of the crust and enough of the upper mantle to make a comparable thickness in the Atlantic Ocean. They also noted that the free-air gravity of the gulf is essentially normal and fails by a large factor to be low enough to reflect the mass difference that they calculated. We propose a solution to this problem. ?? 1972 Nature Publishing Group.

77 FR 41376 - Gulf of Mexico Fishery Management Council; Public Meetings

Science.gov (United States)

2012-07-13

... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration Gulf of Mexico Fishery... Internet. Please go to the Gulf of Mexico Fishery Management Council's Web site at www.gulfcouncil.org for instructions. Council address: Gulf of Mexico Fishery Management Council, 2203 N. Lois Avenue, Suite 1100...

78 FR 33070 - Gulf of Mexico Fishery Management Council; Public Meetings

Science.gov (United States)

2013-06-03

.... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene a public meeting. DATES: The...; telephone: (850) 433-3336. Council address: Gulf of Mexico Fishery Management Council, 2203 North Lois... Director, Gulf of Mexico Fishery Management Council; telephone: (813) 348-1630. SUPPLEMENTARY INFORMATION...

76 FR 22345 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2011-04-21

... effective January 1, 2011, and implement interim measures to reduce overfishing of gag in the Gulf of Mexico... effect of this proposed rule is to reduce overfishing of the gag resource in the Gulf. DATES: Written... to prevent overfishing and achieve, on a continuing basis, the optimum yield (OY) from federally...

75 FR 2469 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2010-01-15

.... SUMMARY: NMFS issues this proposed rule to implement Amendment 31 to the Fishery Management Plan for the Reef Fish Resources of the Gulf of Mexico (FMP) prepared by the Gulf of Mexico Fishery Management... proposed rule is to balance the continued operation of the bottom longline component of the reef fish...

Keeping Safe Online: Perceptions of Gulf Adolescents

Science.gov (United States)

Alqahtani, Abdulmagni Mohammed

2016-01-01

With an increasing number of young people across the Gulf States now having access to the internet, the online safety of these adolescents is of concern. In a survey of 115 adolescents from the Gulf States, it was found that, although there are many benefits to young people, the risks of online usage are not fully understood by teenagers or their…

Oil and politics: the post-war Gulf

International Nuclear Information System (INIS)

Stevens, P.

1992-01-01

This report considers the path of international crude oil prices for the remainder of the decade. The report intends to concentrate on the role of the main Gulf oil producing states. Specifically, it seeks to consider the impact of the Iraqi invasion of Kuwait and its aftermath on the Gulf's role in the oil price equation. The report begins by developing an analytical framework which allows the relevant driving forces to be placed in context. From this framework, three issues will emerge central to the Gulf's role in the determination of oil prices: the size and distribution of any excess capacity to produce crude oil; the pricing objectives of those who control that excess capacity; and finally the cohesion of those who control the excess capacity. (author)

78 FR 9888 - Gulf of Mexico Fishery Management Council; Public Meeting

Science.gov (United States)

2013-02-12

.... SUMMARY: The Gulf of Mexico Fishery Management Council will convene a meeting of the Ad Hoc Artificial... Thursday, February 28, 2013. ADDRESSES: The meeting will be held at the Gulf of Mexico Fishery Management... INFORMATION CONTACT: Dr. John Froeschke, Fishery Biologist- Statistician; Gulf of Mexico Fishery Management...

78 FR 9372 - Gulf of Mexico Fishery Management Council; Public Meeting

Science.gov (United States)

2013-02-08

.... SUMMARY: The Gulf of Mexico Fishery Management Council will convene a meeting of the Ad Hoc Private.... on Tuesday, February 26, 2013. ADDRESSES: The meeting will be held at the Gulf of Mexico Fishery... INFORMATION CONTACT: Dr. John Froeschke, Fishery Biologist- Statistician; Gulf of Mexico Fishery Management...

78 FR 42755 - Gulf of Mexico Fishery Management Council; Public Hearings

Science.gov (United States)

2013-07-17

...: The Gulf of Mexico Fishery Management Council (Council) will hold public hearings for Coastal... through Friday August 15, 2013 at ten locations throughout the Gulf of Mexico. The public hearings will...; Mobile, AL; Corpus Christi and Texas City, TX. Council address: Gulf of Mexico Fishery Management Council...

Hurricane slams gulf operations

International Nuclear Information System (INIS)

Anon.

1992-01-01

This paper reports that reports of damage by Hurricane Andrew escalated last week as operators stepped up inspections of oil and gas installations in the Gulf of Mexico. By midweek, companies operating in the gulf and South Louisiana were beginning to agree that earlier assessments of damage only scratched the surface. Damage reports included scores of lost, toppled, or crippled platforms, pipeline ruptures, and oil slicks. By midweek the U.S. coast Guard had received reports of 79 oil spills. Even platforms capable of resuming production in some instances were begin curtailed because of damaged pipelines. Offshore service companies the another 2-4 weeks could be needed to fully assess Andrew's wrath. Lack of personnel and equipment was slowing damage assessment and repair

Zubarah, the Gulf and local and international trade

DEFF Research Database (Denmark)

Simonsen, Jørgen Bæk

2014-01-01

The deeply etched tracks of human achievement in the Gulf region since prehistory reflect a dynamic interplay between local, neighbouring and inter-regional agencies. Geography, resources, the exchange of commodities and the transfer of ideas elevated the status of the Gulf to that of a major...

Marine modification of terrestrial influences on Gulf hypoxia: Part II

Directory of Open Access Journals (Sweden)

2007-01-01

Full Text Available This study examines potential marine modification of two classes of terrestrial influence on Gulf hypoxia: (1 the flow of nutrient-rich water from the Mississippi/Atchafalaya River Basin and (2 the massive physical, hydrological, chemical and biological change associated with the Atchafalaya’s partial capture of the Mississippi River. The latter involves repartitioning of a total flow of about 20 000 m3 sec−1, equal to that of 13 Nile Rivers, and a sediment load of 210 million metric tonnes yr−1,nearly 20 times that delivered by all of the rivers of the East Coast of the USA. Also involved is the loss of hundreds-to-thousands of years of stored nutrients and organic matter to the Gulf from enormous coastal wetland loss. This study found that the oceanography of the Gulf minimises the impact of both classes of terrestrial influence from the Mississippi River and its nearby estuaries on Gulf hypoxia. Oceanographic conditions give events associated with the Atchafalaya River a disproportionately large influence on Gulf hypoxia. A truly holistic environmental approach which includes the full effects of this highly dynamic coastal area is recommended to better understand and control Gulf hypoxia.

Petroleum service projects in the Gulf of Guinea

Science.gov (United States)

Ken-Worgu, Kenneth Chukwumeka

2011-07-01

The goal of this record of study is to examine the major facets involved in managing several petroleum service projects located in three different countries in the Gulf of Guinea simultaneously, while effectively engaging in business development activities for the Oil and Industrial Services Group (OIS). This work also furnishes adequate background on related subject matters to enable understanding of the projects presented. The petroleum services sector is the back bone of the oil and gas industry. Services companies are vital to the success of all petroleum and energy producers in the USA, the Gulf of Guinea and the world. There is a need and demand for these service companies because they play various roles such as logistics, drilling, construction, dredging, pipe laying, procurement, food supply, human resource supply, etc. The Gulf of Guinea comprises of countries from west and central Africa. This project was limited to Nigeria, Equatorial Guinea and Cameroon. This area holds the largest petroleum reserves in Africa and plays a vital role in the global supply of petroleum. The Oil and Industrial Services Group (OIS), plans to establish herself as one of the leading petroleum service companies in this gulf. To manage this expansion, I have taken the role of Gulf of Guinea manager to apply my background as a petroleum engineer as well as my business skills to build a successful division of the company. This work provides a record of study of the management of services, projects and contracts carried out by the OIS group in the gulf of Guinea. The following are the specific projects in the Gulf of Guinea that I participated in: Managing delivering, maintenance and marketing of offshore vessels, Offshore pipe laying project, Integrated pipeline maintenance project, Development a petroleum technical training facilities, Agbami pipe insulation project, Engineering lift project and Capital budgeting analysis for potential investments. The details of the specific

Definition of Greater Gulf Basin Lower Cretaceous and Upper Cretaceous Lower Cenomanian Shale Gas Assessment Unit, United States Gulf of Mexico Basin Onshore and State Waters

Science.gov (United States)

Dennen, Kristin O.; Hackley, Paul C.

2012-01-01

An assessment unit (AU) for undiscovered continuous “shale” gas in Lower Cretaceous (Aptian and Albian) and basal Upper Cretaceous (lower Cenomanian) rocks in the USA onshore Gulf of Mexico coastal plain recently was defined by the U.S. Geological Survey (USGS). The AU is part of the Upper Jurassic-Cretaceous-Tertiary Composite Total Petroleum System (TPS) of the Gulf of Mexico Basin. Definition of the AU was conducted as part of the 2010 USGS assessment of undiscovered hydrocarbon resources in Gulf Coast Mesozoic stratigraphic intervals. The purpose of defining the Greater Gulf Basin Lower Cretaceous Shale Gas AU was to propose a hypothetical AU in the Cretaceous part of the Gulf Coast TPS in which there might be continuous “shale” gas, but the AU was not quantitatively assessed by the USGS in 2010.

Last millennium sedimentation in the Gulf of Cariaco (NE Venezuela): Evidence for morphological changes of gulf entrance and possible relations with large earthquakes

Science.gov (United States)

Aguilar, Iliana; Beck, Christian; Audemard, Franck; Develle, Anne-Lise; Boussafir, Mohammed; Campos, Corina; Crouzet, Christian

2016-01-01

The Cariaco Basin and the Gulf of Cariaco in Venezuela are two major basins along the seismogenic El Pilar right lateral fault, among which the Cariaco Basin is a pull-apart. Both basins are sites of anoxia and organic-rich deposits. To examine whether the sediments in the Gulf of Cariaco have recorded traces of historical or prehistorical earthquakes, we extracted and analyzed twelve 1 m-long gravity cores, sampling the last millennium sedimentation. We focused on analyzing the sediment sources with different techniques (particle size analysis, XRF, loss on ignition tests, magnetic properties, Rock-Eval pyrolysis, 14C dating). The results confirm that major upwelling occurs at the western gulf entrance and makes deep water flowing from the Cariaco Basin into the Gulf of Cariaco. These flows carry an organic-rich suspended load. Furthermore, we found evidence of a particular, widespread fine-grained siliciclastic deposit (named SiCL3) within the gulf, whose age suggests that it likely formed during the large 1853 AD earthquake that stroke the Cumaná city. We suggest that the earthquake-induced large submarine landslides that modified the topography of the gulf's entrance, which in turn promoted upwelling and open marine water flows from the Cariaco Basin. The layer SiCL3 would be the sediment load remobilized during this chain of events.

75 FR 7444 - Gulf of Mexico Fishery Management Council; Public Meeting

Science.gov (United States)

2010-02-19

.... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene a web based meeting of the... via internet. Please go to the Gulf of Mexico Fishery Management Council's website at www.gulfcouncil.org for instructions. Council address: Gulf of Mexico Fishery Management Council, 2203 N. Lois Avenue...

Energy partnership: China and the Gulf states

International Nuclear Information System (INIS)

Bahgat, G.

2005-01-01

One of the most significant developments in the global energy market in the last several years has been China's skyrocketing demand for energy. In 1993, China became a net oil importer for the first time in its history and in 2003 replaced Japan as the world's second-largest oil importer (after the United States). The country needs more energy to maintain its spectacular economic performance. This study examines China's attempts to satisfy its growing needs for oil and natural gas by increasing imports from Russia and Central Asia/Caspian Sea region. The analysis suggests that despite growing cooperation between the two sides, the Gulf region is likely to satisfy most of China's hydrocarbons needs. Energy partnership between China and the Gulf has already started and is likely to be consolidated over the next few decades. The study also argues that this growing partnership between China and the Gulf should not be seen as a threat to any third party. The global energy market is well-integrated. Energy policy should not be seen in zero-sum terms. A China-Gulf partnership will benefit both sides and contribute to the stability of global energy markets. (author)

The Gulf War Nuclear, Biological, and Chemical Lessons Learned

National Research Council Canada - National Science Library

Ugone, Mary

2001-01-01

This audit was requested by the Office of the Special Assistant for Gulf War Illnesses, Medical Readiness and Military Deployments, which has the authority to coordinate all aspects of Gulf War investigations for DoD...

Astronaut observations of the Persian (Arabian) Gulf during STS-45

Science.gov (United States)

Ackleson, Steven G.; Pitts, David E.; Sullivan, Kathryn D.; Reynolds, R. M.

1992-01-01

As a result of the 1991 Persian Gulf war, between mid-January and June 1991, the Persian Gulf was contaminated with an estimated 4 to 6 million barrels of crude oil, released directly into the Gulf from refinement facilities, transhipment terminals, and moored tankers along the coast of Kuwait, and precipitated from oil fire smoke plumes. To assess the environmental impact of the oil, an international team of marine scientists representing 14 nations was assembled under the auspices of the United Nations International Oceanic Commission and the Regional Organization for Protection of the Marine Environment to conduct detailed surveys of the Persian Gulf, the Strait of Hormuz, and the Gulf of Oman, including hydrographic, chemical, and biological measurements. To supplement the field surveys and to serve as an aid in data interpretation, astronauts aboard the Space Shuttle Atlantis photographed water features and coastal habitats in the Persian Gulf during mission STS-45 (24 March to 02 April 1992). The astronauts collected 111 hand-held, color photographs of the Gulf (72 70-mm photographs and 39 5-inch photographs) from an altitude of 296 km (160 n.mi.). The photographs reveal distributions in water turbidity associated with outflow from the Shatt-al-Arab and water circulation along the entire coast of Iran and the Strait of Hormuz, coastal wetlands and shallow-water habitats, and sticks appearing in the sunglint pattern, which appear to be oil.

78 FR 14980 - Gulf of Mexico Fishery Management Council; Public Meetings

Science.gov (United States)

2013-03-08

.... SUMMARY: The Gulf of Mexico Fishery Management Council will convene scoping meetings to discuss a For-Hire... through April 3, 2013 at eight locations throughout the Gulf of Mexico. The scoping meetings will begin at..., TX. Council address: Gulf of Mexico Fishery Management Council, 2203 N. Lois Avenue, Suite 1100...

Ecophysiological Response of Rhizophora mangle to the Variation in Hydrochemistry during Five Years along the Coast of Campeche, México

Directory of Open Access Journals (Sweden)

Carlos A. Chan-Keb

2018-02-01

Full Text Available We evaluated the phenological response and litterfall production of Rhizophora mangle to changes in pore water chemistry over a five-year period (from 2009 to 2014 and 2010 to 2016 along the coast of Campeche, México. Severe drought conditions were recorded in 2009 with a Standardized Precipitation Index (SPI of −1.5 and again in 2015 with a SPI of −1.16. A precipitation deficit of 22.1% was recorded between 2009 and 2016 ranging from 9.5% in Laguna de Terminos in the south to 64.4% in Los Petenes Biosphere Reserve in the north. Precipitation varied significantly per year (p < 0.001, seasonally (p < 0.001, and between years and seasons (p < 0.001. An interaction was observed in the salinity (p < 0.05, redox potential (p < 0.001, and precipitation (p < 0.001 of the Laguna de Terminos, Rio Champoton, and Los Petenes Biosphere Reserve regions. Significant differences were found between the years in the leaf and propagule production (p < 0.001, and between seasons in production of leaves, flowers, and propagules (p < 0.001. The determining factor in the production of flowers during both the rainy and dry seasons was the salinity, and the determining factors for the production of propagules were the redox potential and salinity. The results of this study suggest a low phenotypic plasticity in R. mangle.

The Gulf Security Dialogue and Related Arms Sale Proposals

National Research Council Canada - National Science Library

Blanchard, Christopher M; Grimmett, Richard F

2008-01-01

...) security cooperation under the auspices of a new Gulf Security Dialogue (GSD). The Dialogue now serves as the principal security coordination mechanism between the United States and the six countries of the Gulf Cooperation Council (GCC...

The deepwater Gulf of Mexico : promises delivered?

International Nuclear Information System (INIS)

Pickering, D.R.

1999-01-01

A summary review of deepwater Gulf of Mexico (GOM) oil production was presented for the years 1989 to 1998. Trends and prospects in deepwater GOM production and leasing were assessed. Promises and forecasts made in the early 1990s were compared with what actually happened since then. Forecasts in the early 1990s promised deeper, faster and cheaper developments in the deepwater Gulf. Results of the comparison showed that the prognosticators were correct on all three counts. Regarding the future of the Gulf, one can be justified in being optimistic in so far as more experience, robust economics, more and cheaper rigs can be taken as reliable indicators of optimism. In contrast, there are certain negatives to consider, such as low commodity prices, budget constraints, lease expirations, technical challenges and increased competition. . 12 figs

Pollution in the Gulf: Monitoring the marine environment

International Nuclear Information System (INIS)

Fowler, S.W.

1993-01-01

More than 2 years after the Gulf conflict, scientists are continuing to keep a close watch on marine pollution stemming from the war. Following the conflict in early 1991, major concern was raised worldwide when an estimated four to eight million barrels of crude oil were directly released into the Persian Gulf from the Sea Island terminal in Kuwait. Such amounts clearly made it the largest oil spill in history. The catastrophe was exacerbated when Kuwaiti oil fields were ignited. The magnitude of the pollution, and the types of toxic contaminants involved, led to a worldwide response through the United Nations system. An inter-agency plan of action was developed quickly. As one of its steps, the co-ordinating agency - the United Nations Environment Programme (UNEP) - asked the IAEA's Marine Environment Laboratory (MEL) in Monaco to help make a preliminary assessment of the situation. The Laboratory's main goal in initial surveys was to map the extent and general degree of the war-related pollution throughout the Gulf. Since the initial surveys were done, IAEA-MEL scientists have been engaged in regional follow-up activities in ongoing attempts to obtain a clearer picture of the oil pollution's effects on the Gulf's marine environment. This article highlights the laboratory's work in the Gulf following the 1991 conflict, within the context of co-operative programmes and projects. 1 fig

DNA barcoding and morphological studies confirm the occurrence of three Atarbolana (Crustacea: Isopoda: Cirolanidae) species along the coastal zone of the Persian Gulf and Gulf of Oman.

Science.gov (United States)

Khalaji-Pirbalouty, Valiallah; Raupach, Michael J

2016-11-27

Two species of Atarbolana (Cirolanidae: Isopoda) from the intertidal zone of the Gulf of Oman and the Persian Gulf were studied and redescribed. The known distribution of this small genus is limited to the northern areas of the Indian Ocean, from the Pakistan coasts to the Persian Gulf. The analyses of DNA barcodes as well as detailed morphological studies clearly support the existence of three distinct Atarbolana species along the coastal zone of the Persian Gulf and northern Arabian Sea. Furthermore, A. dasycolus Yasmeen, 2004 is synonymized with A. setosa Javed and Yasmeen, 1989.

Arab Gulf States : recruitment of Asian workers

OpenAIRE

JUREIDINI, Ray

2014-01-01

GLMM - Gulf Labour Markets and Migration This paper addresses a neglected area in studies of migrant labor in the Gulf States showing that exploitation of migrant workers occurs before deployment. Evidence from interviews conducted in the five major labour sending countries to Qatar (Philippines, Nepal, Bangladesh, Sri Lanka, and India) suggests that the recruitment procedures and corrupt practices by recruitment agencies and employing company personnel in the receiving country place unski...

75 FR 62109 - Gulf of Mexico Fishery Management Council (Council); Public Meetings

Science.gov (United States)

2010-10-07

... meetings. SUMMARY: The Gulf of Mexico Fishery Management Council (GMFMC) will convene public meetings... Embassy Suites Hotel, 4914 Constitution Ave., Baton Rouge, LA 70808. Council address: Gulf of Mexico... CONTACT: Dr. Stephen Bortone, Executive Director, Gulf of Mexico Fishery Management Council; telephone...

77 FR 40859 - Gulf of Mexico Fishery Management Council; Public Meetings; Correction

Science.gov (United States)

2012-07-11

... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration Gulf of Mexico Fishery.... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Law Enforcement Advisory... Ludwig Lane, Grand Isle, LA 70358; telephone: (985) 787-2163 Council address: Gulf of Mexico Fishery...

The growth of coral reef science in the Gulf: a historical perspective.

Science.gov (United States)

Burt, John A

2013-07-30

Coral reef science has grown exponentially in recent decades in the Gulf. Analysis of literature from 1950 to 2012 identified 270 publications on coral reefs in the Gulf, half of which were published in just the past decade. This paper summarizes the growth and evolution of coral reef science in the Gulf by examining when, where and how research has been conducted on Gulf reefs, who conducted that research, and what themes and taxa have dominated scientific interest. The results demonstrate that there has been significant growth in our understanding of the valuable coral reefs of the Gulf, but also highlight the fact that we are documenting an increasingly degraded ecosystem. Reef scientists must make a concerted effort to improve dialogue with regional reef management and decision-makers if we are to stem the tide of decline in coral reefs in the Gulf. Copyright © 2013 Elsevier Ltd. All rights reserved.

Use of a Florida Gulf Coast Barrier Island by Spring Trans-Gulf Migrants and the Projected Effects of Sea Level Rise on Habitat Availability.

Directory of Open Access Journals (Sweden)

Lori A Lester

Full Text Available Barrier islands on the north coast of the Gulf of Mexico are an internationally important coastal resource. Each spring hundreds of thousands of Nearctic-Neotropical songbirds crossing the Gulf of Mexico during spring migration use these islands because they provide the first landfall for individuals following a trans-Gulf migratory route. The effects of climate change, particularly sea level rise, may negatively impact habitat availability for migrants on barrier islands. Our objectives were (1 to confirm the use of St. George Island, Florida by trans-Gulf migrants and (2 to determine whether forested stopover habitat will be available for migrants on St. George Island following sea level rise. We used avian transect data, geographic information systems, remote sensing, and simulation modelling to investigate the potential effects of three different sea level rise scenarios (0.28 m, 0.82 m, and 2 m on habitat availability for trans-Gulf migrants. We found considerable use of the island by spring trans-Gulf migrants. Migrants were most abundant in areas with low elevation, high canopy height, and high coverage of forests and scrub/shrub. A substantial percentage of forest (44% will be lost by 2100 assuming moderate sea level rise (0.82 m. Thus, as sea level rise progresses, less forests will be available for migrants during stopover. Many migratory bird species' populations are declining, and degradation of barrier island stopover habitat may further increase the cost of migration for many individuals. To preserve this coastal resource, conservation and wise management of migratory stopover areas, especially near ecological barriers like the Gulf of Mexico, will be essential as sea levels rise.

Use of a Florida Gulf Coast Barrier Island by Spring Trans-Gulf Migrants and the Projected Effects of Sea Level Rise on Habitat Availability.

Science.gov (United States)

Lester, Lori A; Gutierrez Ramirez, Mariamar; Kneidel, Alan H; Heckscher, Christopher M

2016-01-01

Barrier islands on the north coast of the Gulf of Mexico are an internationally important coastal resource. Each spring hundreds of thousands of Nearctic-Neotropical songbirds crossing the Gulf of Mexico during spring migration use these islands because they provide the first landfall for individuals following a trans-Gulf migratory route. The effects of climate change, particularly sea level rise, may negatively impact habitat availability for migrants on barrier islands. Our objectives were (1) to confirm the use of St. George Island, Florida by trans-Gulf migrants and (2) to determine whether forested stopover habitat will be available for migrants on St. George Island following sea level rise. We used avian transect data, geographic information systems, remote sensing, and simulation modelling to investigate the potential effects of three different sea level rise scenarios (0.28 m, 0.82 m, and 2 m) on habitat availability for trans-Gulf migrants. We found considerable use of the island by spring trans-Gulf migrants. Migrants were most abundant in areas with low elevation, high canopy height, and high coverage of forests and scrub/shrub. A substantial percentage of forest (44%) will be lost by 2100 assuming moderate sea level rise (0.82 m). Thus, as sea level rise progresses, less forests will be available for migrants during stopover. Many migratory bird species' populations are declining, and degradation of barrier island stopover habitat may further increase the cost of migration for many individuals. To preserve this coastal resource, conservation and wise management of migratory stopover areas, especially near ecological barriers like the Gulf of Mexico, will be essential as sea levels rise.

Military and Non Military Threats to the Gulf Cooperation Countries

National Research Council Canada - National Science Library

Al-Khulaifi, Hamad H

2008-01-01

The international strategic importance of Gulf oil resources, the intense political and economic attention to the Gulf Countries affairs by nations beyond the region, necessitate looking at the impact...

Mercury in contaminated coastal environments; a case study: the Gulf of Trieste.

Science.gov (United States)

Horvat, M; Covelli, S; Faganeli, J; Logar, M; Mandić, V; Rajar, R; Sirca, A; Zagar, D

1999-09-30

Some general facts, uncertainties and gaps in current knowledge of Hg cycling in coastal and oceanic environments are given. As a case study the Gulf of Trieste is chosen. The Gulf is subject to substantial Hg pollution, originating from the Soca river, that drains the cinnabar deposits of the world's second largest Hg mining area, Idrija, Slovenia. The Gulf belongs to one of the most polluted areas in the Mediterranean. Apart from Hg problems, the Gulf is also a subject to industrial and sewage pollution. Due to deteriorating water quality in the Gulf there is a great concern that Hg can be remobilized from sediments to the water column as well as enhance methylation rates which may consequently increase already elevated Hg levels in aquatic organisms. The paper presents data from a recent study which aims to assess the extent of contamination of the Gulf of Trieste after the closure of the Hg mine. Mercury and methylmercury were measured in various environmental compartments (estuarine and marine waters, sediments, and organisms) during the period 1995-1997. Data obtained show that even 10 years after closure of the Hg mine, Hg concentrations in river sediments and water are still very high and did not show the expected decrease of Hg in the Gulf of Trieste. A provisional annual mercury mass balance was established for the Gulf of Trieste showing that the major source of inorganic mercury is still the River Soca (Isonzo) while the major source of methylmercury is the bottom sediment of the Gulf.

Physical processes in the Gulf of Kachchh: A review

Digital Repository Service at National Institute of Oceanography (India)

Vethamony, P.; Babu, M.T.

A brief review of various physical processes acting in the Gulf of Kachchh (GoK), which have prominent roles in Gulf dynamics, is presented in this article. The eddies present in the GoK confirm that they are permanent features of the Go...

Carbon emissions from the Persian Gulf countries

International Nuclear Information System (INIS)

Al-Shatti, A.M.

1991-01-01

The wealth of indigenous oil resources has largely determined the economic and energy use patterns in the member countries of the Gulf Cooperation Council (GCC). Sizable profits accrued from the inflation of world oil prices spurred tremendous economic growth across the Gulf during the 1970s. The GCC nations channeled this oil wealth into the rapid development of infrastructure and the creation of super-welfare states. Today, these highly affluent societies enjoy benefits ranging from free medical care, schooling and housing to subsidized electricity and gasoline supplies. The combination of great personal prosperity, abundant petroleum resources and highly subsidized energy prices has led to excessive energy use in the Gulf nations. These countries consume among the highest amounts of energy per capita in the world. Correspondingly, these nations generate among the highest levels of energy-related carbon per capita

76 FR 37064 - Gulf of Mexico Fishery Management Council (Council); Public Meeting

Science.gov (United States)

2011-06-24

... meeting. SUMMARY: The Gulf of Mexico Fishery Management Council will convene a public meeting via webinar... meeting will be held via webinar. Council address: Gulf of Mexico Fishery Management Council, 2203 North... Executive Director, Gulf of Mexico Fishery Management Council; telephone: (813) 348-1630. SUPPLEMENTARY...

75 FR 8789 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

Science.gov (United States)

2010-02-25

... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... theater of operations during the Gulf War. The Committee will review VA program activities related to Gulf...

Long-term changes of fisheries landings in enclosed gulf lagoons (Amvrakikos gulf, W Greece): Influences of fishing and other human impacts

Science.gov (United States)

Katselis, George N.; Moutopoulos, Dimitrios K.; Dimitriou, Evagelos N.; Koutsikopoulos, Constantin

2013-10-01

The present study analyses long-term annual fishery landings time series (1980-2007) for species derived from six lagoons (covering about 70 km2) around an important European wetland, the fjord-like Amvrakikos gulf. Landing trends for most abundant species revealed that typical lagoon fish species-groups, such as Mugilidae (Mugil cephalus, Chelon labrosus, Liza saliens, Liza aurata and Liza ramada), eels (Anguilla anguilla) and Gobies (mainly Zosteriosessor ophiocephalus) had largely decreased, while the landings of Sparus aurata increased during the entire study period. These trends led to a significant change in species composition during recent years that might be attributed to large-scale climatic changes as well as serious anthropogenic impacts that degraded the water quality and altered the hydrology within the gulf and lagoons, the increase of fishing exploitation in Amvrakikos gulf, the expansion of aquaculture activities within the gulf, the application of new fishing management practices in lagoons, and the increase of fish-eating sea-bird populations. The findings are needed for the implementation of an efficient and integrated management tool for the study of coastal systems.

Observing environmental change in of the Gulf of Maine: ICUC smartphone app

Science.gov (United States)

Want to help collect data on environmental change in the Gulf of Maine with your smartphone? The Gulf of Maine Council’s EcoSystem Indicator Partnership (ESIP) is growing the community of citizen scientists in the Gulf of Maine region through its new smartphone app: ICUC (...

Report A, chemical oceanographic data from the Persian Gulf and Gulf of Oman from 17 April 1972 to 17 March 1978 (NODC Accession 7900091)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile and chemical data were collected using bottle casts from NOAA Ship DELAWARE and other platforms in the Persian Gulf and Gulf of Oman from 17...

Increased psychological distress among Danish Gulf War veterans--without evidence for a neurotoxic background. The Danish Gulf War Study

DEFF Research Database (Denmark)

Ishøy, Torben; Knop, Joachim; Suadicani, Poul

2004-01-01

INTRODUCTION: Compared with controls, up to six years after their return, Danish Gulf War veterans have a significantly higher prevalence of self-reported neuropsychological symptoms, potentially as a result of neurotoxic exposure during deployment. We tested the hypotheses that: 1) GW veterans...... of neuropsychological symptoms, and stratified according to SCL-90-R score, no trends were found suggesting reduced motor function with increasing symptoms. Of nine dimensions constructed on the basis of the SCL-90-R items, six were significantly associated with being a Gulf War veteran. Statistically, the strongest...... would perform less well than controls using a computerized neuromotor test battery; and that 2) GW veterans have a psychological profile different from that of controls. MATERIAL AND METHODS: A cross-sectional study of 686 subjects who had been deployed in the Persian Gulf within the period August 2...

Good Order at Sea in the Gulf of Guinea

DEFF Research Database (Denmark)

Nordby, Johannes Riber; Lindskov Jacobsen, Katja

In this chapter, we first outline the maritime security situation in the Gulf of Guinea region at present. It is examined in the context of Good Order at Sea. Second, we describe the most recent maritime security initiative launched during the Yaoundé Summit in 2013. During the summit, West...... and Central African states decided to establish six maritime zones along their coastline in order to improve the maritime security in the Gulf of Guinea. A process heavily supported by UN’s International Maritime Organisation (IMO). Finally, the chapter suggests that maritime security issues in the Gulf...

Gulf of Mexico Regional Collaborative Final Report

Energy Technology Data Exchange (ETDEWEB)

Judd, Kathleen S. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Judd, Chaeli [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Engel-Cox, Jill A. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Gulbransen, Thomas [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Anderson, Michael G. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Woodruff, Dana L. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Thom, Ronald M. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Guzy, Michael [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Hardin, Danny [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Estes, Maury [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

2007-12-01

This report presents the results of the Gulf of Mexico Regional Collaborative (GoMRC), a year-long project funded by NASA. The GoMRC project was organized around end user outreach activities, a science applications team, and a team for information technology (IT) development. Key outcomes are summarized below for each of these areas. End User Outreach; Successfully engaged federal and state end users in project planning and feedback; With end user input, defined needs and system functional requirements; Conducted demonstration to End User Advisory Committee on July 9, 2007 and presented at Gulf of Mexico Alliance (GOMA) meeting of Habitat Identification committee; Conducted significant engagement of other end user groups, such as the National Estuary Programs (NEP), in the Fall of 2007; Established partnership with SERVIR and Harmful Algal Blooms Observing System (HABSOS) programs and initiated plan to extend HABs monitoring and prediction capabilities to the southern Gulf; Established a science and technology working group with Mexican institutions centered in the State of Veracruz. Key team members include the Federal Commission for the Protection Against Sanitary Risks (COFEPRIS), the Ecological Institute (INECOL) a unit of the National Council for science and technology (CONACYT), the Veracruz Aquarium (NOAA’s first international Coastal Ecology Learning Center) and the State of Veracruz. The Mexican Navy (critical to coastal studies in the Southern Gulf) and other national and regional entities have also been engaged; and Training on use of SERVIR portal planned for Fall 2007 in Veracruz, Mexico Science Applications; Worked with regional scientists to produce conceptual models of submerged aquatic vegetation (SAV) ecosystems; Built a logical framework and tool for ontological modeling of SAV and HABs; Created online guidance for SAV restoration planning; Created model runs which link potential future land use trends, runoff and SAV viability; Analyzed SAV

76 FR 60807 - Gulf of Mexico Fishery Management Council; Public Meeting; Correction

Science.gov (United States)

2011-09-30

... to a Council meeting. SUMMARY: The Gulf of Mexico Fishery Management Council will convene a meeting... Thursday, October 13, 2011. ADDRESSES: The meeting will be held at the Gulf of Mexico Fishery Management Council, 2203 North Lois Avenue, Suite 1100, Tampa, FL 33607. Council address: Gulf of Mexico Fishery...

Central Gulf of Mexico lease sale draws weak industry response

International Nuclear Information System (INIS)

Koen, A.D.

1992-01-01

This paper reports that interest in oil and gas leases in the Gulf of Mexico continued spiraling downward at the latest Minerals Management Service offshore sale. Companies participating in Outer Continental Shelf Sale 139 last week in New Orleans offered 196 bids for 151 blocks in the central Gulf of Mexico. MMS offered 5,213 blocks for lease. The number of tracts receiving bids was the fewest at a central gulf lease sale since 114 tracts garnered high bids totaling $146.4 million at Sale 104 in April 1986. Apparent high bids in Sale 139 totaled $56,195,552, and all bids offered totaled just $65,300,864. Both bidding totals were the lowest in a Gulf of Mexico lease sale since MMS began area-wide gulf leasing at Sale 72 in May 1983. Only 64 of 93 qualified companies participated in Sale 139. Fifty-five companies offered apparent winning bids. By comparison, 123 companies at central gulf lease Sale 131 in March 1991 offered 637 bids totaling $320.5 million for 464 tracts. Apparent high bids last spring totaled $259.9 million. At central gulf lease Sale 123 in March 1990, high bids totaled $427.4 million for 538 tracts. In that sale, BP Exploration Inc. led all bidders, exposing $78 million in 79 high bids, including 60 for deepwater tracts. Since then, interest in deepwater tracts has waned in part because of sagging oil and gas prices as U.S. operators sought bigger prospects outside the U.S. Ironically, Sale 139 was dominated by the U.S. subsidiary of an Italian holding company

Initial Evaluations of a U.S. Navy Rapidly Relocatable Gulf of Mexico/Caribbean Ocean Forecast System in the Context of the Deepwater Horizon Incident

Science.gov (United States)

2015-05-06

tropical cyclones and wintertime cold fronts and extratropical cyclones. These events have much greater impact on the circulation and mixing of the...of Campeche (19-22 August 2011) was considered as a possible link; however, this possibility was ruled out since the storm passed more than a week... storm surge events (D’Sa et al., 2011). Fig. 18 shows four snapshots of the oil spill evolution simulated by the Lagrangian model for 20 June, 25 June, 30

Future role of Gulf oil in world energy demand

International Nuclear Information System (INIS)

Eltony, M.N.

1998-01-01

The view that there will be a growing dependence on oil from the Gulf countries is shared by a great number of oil market analysts. This view is based on the fact that Gulf countries dominate the global oil reserves. Energy analyst argue that as the world demand for oil continues to grow driven largely by the growth in developing countries' consumption coupled with constrained non-OPEC supply, the end result will be that the call on Gulf oil will grow substantially. In summary, this paper has challenged the view of growing dependence on oil from the Gulf using available information in conjunction with reasonable and fairly plausible arguments. The aim was to point out to the GCC member counties the danger of relying on these views in shaping their economic policies and in setting their oil market strategies. They may run the ultimate risk of being left with huge oil reserves that no one wants. (orig.)

Gulf Canada Resources Limited 1998 annual report

International Nuclear Information System (INIS)

1999-01-01

A review of operations in 1998 and financial information from Gulf Canada Resources Limited is provided to keep shareholders abreast of company performance. Gulf Canada Resources Limited explores for, develops, produces and markets conventional and synthetic crude oil, natural gas and natural gas liquids. In 1998, the company's main operating centres were in western Canada (where it owns a nine per cent interest in the Syncrude Joint Venture), Indonesia, the North Sea and Australia. The report summarizes the company's energy resource activities, presents a detailed review of operations, and provides consolidated financial statements, and common share information. Although Gulf Canada Resources sold $ 1.2 billion worth of non-producing assets during the year, year end proved reserves of 838 million barrels of oil equivalent were less than ten per cent lower than a year earlier, reflecting reserve additions of 100 million barrels of oil equivalent. tabs., figs

Energy benchmarking for shopping centers in Gulf Coast region

International Nuclear Information System (INIS)

Juaidi, Adel; AlFaris, Fadi; Montoya, Francisco G.; Manzano-Agugliaro, Francisco

2016-01-01

Building sector consumes a significant amount of energy worldwide (up to 40% of the total global energy); moreover, by the year 2030 the consumption is expected to increase by 50%. One of the reasons is that the performance of buildings and its components degrade over the years. In recent years, energy benchmarking for government office buildings, large scale public buildings and large commercial buildings is one of the key energy saving projects for promoting the development of building energy efficiency and sustainable energy savings in Gulf Cooperation Council (GCC) countries. Benchmarking would increase the purchase of energy efficient equipment, reducing energy bills, CO_2 emissions and conventional air pollution. This paper focuses on energy benchmarking for shopping centers in Gulf Coast Region. In addition, this paper will analyze a sample of shopping centers data in Gulf Coast Region (Dubai, Ajman, Sharjah, Oman and Bahrain). It aims to develop a benchmark for these shopping centers by highlighting the status of energy consumption performance. This research will support the sustainability movement in Gulf area through classifying the shopping centers into: Poor, Usual and Best Practices in terms of energy efficiency. According to the benchmarking analysis in this paper, the shopping centers best energy management practices in the Gulf Coast Region are the buildings that consume less than 810 kW h/m"2/yr, whereas the poor building practices are the centers that consume greater than 1439 kW h/m"2/yr. The conclusions of this work can be used as a reference for shopping centres benchmarking with similar climate. - Highlights: •The energy consumption data of shopping centers in Gulf Coast Region were gathered. •A benchmarking of energy consumption for the public areas for the shopping centers in the Gulf Coast Region was developed. •The shopping centers have the usual practice in the region between 810 kW h/m"2/yr and 1439 kW h/m"2/yr.

78 FR 12294 - Gulf of Mexico Fishery Management Council (Council); Public Meetings

Science.gov (United States)

2013-02-22

... meetings. SUMMARY: The Gulf of Mexico and South Atlantic Fishery Management Councils will convene a Science.... to 4 p.m. EST on Tuesday, March 12, 2013. ADDRESSES: The meeting will be held at the Gulf of Mexico.... Council address: Gulf of Mexico Fishery Management Council, 2203 North Lois Avenue, Suite 1100, Tampa, FL...

Seasonal phytoplankton blooms in the Gulf of Aden revealed by remote sensing

KAUST Repository

Gittings, John

2016-11-25

The Gulf of Aden, situated in the northwest Arabian Sea and linked to the Red Sea, is a relatively unexplored ecosystem. Understanding of large-scale biological dynamics is limited by the lack of adequate datasets. In this study, we analyse 15 years of remotely-sensed chlorophyll-a data (Chl-a, an index of phytoplankton biomass) acquired from the Ocean Colour Climate Change Initiative (OC-CCI) of the European Space Agency (ESA). The improved spatial coverage of OC-CCI data in the Gulf of Aden allows, for the first time, an investigation into the full seasonal succession of phytoplankton biomass. Analysis of indices of phytoplankton phenology (bloom timing) reveals distinct phytoplankton growth periods in different parts of the gulf: a large peak during August (mid-summer) in the western part of the gulf, and a smaller peak during November (mid-autumn) in the lower central gulf and along the southern coastline. The summer bloom develops rapidly at the beginning of July, and its peak is approximately three times higher than that of the autumnal bloom. Remotely-sensed sea-surface temperature (SST), wind-stress curl, vertical nutrient profiles and geostrophic currents inferred from the sea-level anomaly, were analysed to examine the underlying physical mechanisms that control phytoplankton growth. During summer, the prevailing southwesterlies cause upwelling along the northern coastline of the gulf (Yemen), leading to an increase in nutrient availability and enhancing phytoplankton growth along the coastline and in the western part of the gulf. In contrast, in the central region of the gulf, lowest concentrations of Chl-a are observed during summer, due to strong downwelling caused by a mesoscale anticyclonic eddy. During autumn, the prevailing northeasterlies enable upwelling along the southern coastline (Somalia) causing local nutrient enrichment in the euphotic zone, leading to higher levels of phytoplankton biomass along the coastline and in the lower central gulf

Biomarker Discovery in Gulf War Veterans: Development of a War Illness Diagnostic Panel

Science.gov (United States)

2016-12-01

Award Number: W81XWH-12-1-0382 TITLE: Biomarker Discovery in Gulf War Veterans: Development of a War Illness Diagnostic Panel PRINCIPAL...SUBTITLE Biomarker Discovery in Gulf War Veterans: Development of a War Illness Diagnostic Panel 5a. CONTRACT NUMBER W81XWH-12-1-0382 5b. GRANT...of the 1990-1991 Gulf War are affected by Gulf War illness (GWI), the chronic condition currently defined only by veterans’ self-reported symptoms

Effect of Diet on Gulf War Illness: A Pilot Study

Science.gov (United States)

2017-10-01

Award Number: W81XWH-15-1-0636 TITLE: Effect of Diet on Gulf War Illness: A Pilot Study PRINCIPAL INVESTIGATOR: Ashok Tuteja, M.D. M.P.H...CONTRACT NUMBER Effect of Diet on Gulf War Illness 5b. GRANT NUMBER W81XWH-15-1-0636 5c. PROGRAM ELEMENT NUMBER 6 . AUTHOR(S) 5d. PROJECT NUMBER...headache) in Veterans with Gulf War Illness. We will also determine if the change in gut flora is a mechanism for improvement in symptoms of IBS and GW

Environmental impacts of tourism in the Gulf and the Red Sea.

Science.gov (United States)

Gladstone, William; Curley, Belinda; Shokri, Mohammad Reza

2013-07-30

The Gulf and Red Sea possess diverse coastal and marine environments that support rapidly expanding mass tourism. Despite the associated environmental risks, there is no analysis of the tourism-related literature or recent analysis of impacts. Environmental issues reported in 101 publications (25 from the Gulf, 76 from the Red Sea) include 61 purported impacts (27 from the Gulf, 45 from the Red Sea). Gulf literature includes quantitative studies (68% publications) and reviews (32%), and addresses mostly land reclamation and artificial habitats. Most Gulf studies come from Iran and UAE (64%). Red Sea literature includes quantitative studies (81%) and reviews (11%), with most studies occurring in Egypt (70%). The most published topics relate to coral breakage and its management. A full account of tourism's environmental impacts is constrained by limited tourism data, confounding of impacts with other coastal developments, lack of baseline information, shifting baselines, and fragmentation of research across disciplines. Copyright © 2012 Elsevier Ltd. All rights reserved.

Gulf War syndrome: an emerging threat or a piece of history?

Science.gov (United States)

Greenberg, N; Wessely, S

2008-01-01

‘Gulf War syndrome’ is a phrase coined after the 1991 Gulf War to group together disparate, unexplained health symptoms in Gulf veterans. This paper examines the many hypotheses that have been put forward about the origins of the concept and gives an overview of the studies that have attempted to explain the lasting health effects associated with Gulf service. Our review finds that although in the UK there has not yet been evidence of a new Gulf War syndrome as a result of the current conflicts in Iraq and Afghanistan, there is a rise in post-conflict psychiatric disorders now being reported in the USA. We postulate that after conflicts military personnel will always face some form of post-conflict syndrome and the nature of the threats experienced is likely to dictate the form the syndrome might take. We also postulate that media reporting is likely to have influenced and to continue unhelpfully to influence the health of service personnel. PMID:22460210

Characterization of sea floor in Gulf of Mexico

Energy Technology Data Exchange (ETDEWEB)

McGregor, B.A.; Kenyon, N.H.; Schlee, J.S.; Mattick, R.e.; Twichell, D.C.

1986-05-01

In 1985, the US Geological Survey (USGS) conducted a mapping program in the Gulf of Mexico. Using the GLORIA (Geologic Long-Range Inclined Asdic) side-scan sonar system of the Institute of Oceanographic Sciences, USGS mapped approximately 90,000 nmi/sup 2/ of sea floor in the central and western Gulf of Mexico, seaward of the shelf edge. The Sigsbee Escarpment, the seaward edge of a salt front that extends from the western gulf to just west of the Mississippi Canyon, is marked by piles of debris along its base, and is breached by several submarine channels. One such meandering channel can be traced from the shelf edge, through the maze of diapirs on the slope, and out across the Sigsbee Abyssal Plain. This continuous transport pathway indicates the interaction of salt tectonics on sediment pathways and distribution. Numerous bed forms seaward of the Sigsbee Escarpment suggest that strong bottom currents are present. The northern gulf has three major submarine fans, each with different surface morphologies. The Rio Grande Fan has a braided channel system. The Mississippi Fan has a main channel that can be traced for approximately 100 km across the midfan, but most of the surface of the upper and midfan as well as the channel are buried by submarine slides or debris flows. Desoto Canyon Fan also has a continuous channel that has been filled or overrun in places by massive debris flows. Based on the sonographs, mass wasting appears to be an important process in distributing sediments in the deep water of the central gulf.

Use of Cu/Zn-superoxide dismutase tool for biomonitoring marine environment pollution in the Persian Gulf and the Gulf of Oman.

Science.gov (United States)

Zeinali, Farrokhzad; Homaei, Ahmad; Kamrani, Ehsan; Patel, Seema

2018-04-30

Superoxide dismutase (SOD) is the pivotal antioxidant enzyme that defends organisms against the oxidative stresses of superoxide radicals. In this experimental study, purification of SOD from the leaves of Avicennia marina (grey mangrove or white mangrove) from the family Acanthaceae, located in Sirik mangrove forest on the shore of the Gulf of Oman was performed, for the intended characterization of SOD. The Sirik AmSOD (A. marina SOD) expressed optimum activity in the pH range of 6-9 with the maximum activity at pH 8. The optimal temperature for Sirik AmSOD activity was 70°C. Comparison of the pH and temperature optima in two regions (the Persian Gulf and the Gulf of Oman) showed significant differences with P<0.05. The SOD from the Persian Gulf was more resistant against the environmental stressors, because of the biochemical adaption to this environment, which is harsher. The evidence from these results suggests that AmSOD has different characteristics in each place, and mangroves undergo different adaptations and require different protections. The results of the enzymatic research can be useful for ecological management of organisms. Copyright © 2018 Elsevier Inc. All rights reserved.

A two years study on vectors of cutaneous Leishmaniasis. Evidence for sylvatic transmission cycle in the state of Campeche, Mexico.

Science.gov (United States)

Rebollar-Téllez, E A; Ramírez-Fraire, A; Andrade-Narvaez, F J

1996-01-01

Vectors of cutaneous leishmaniasis in the State of Campeche were studied in relation to the transmission cycle of Leishmania (Le.) mexicana. To determine how transmission of leishmaniasis occurs, we collected phlebotomine sand flies for two years. In the first year (October 1990 to November 1991) the collections were made with CDC light traps, Shannon traps and direct captures at natural shelters around the village (La Libertad. In the second year (February 1993 to January 1994) the catches were performed at 8 km southeast of La Libertad in the forest. Female sand flies were examined for Leishmania. During the first year, 347 sand flies of nine species were collected, most of which were Lutzomyia deleoni (61.3%). When all nine species were considered, more females than males were captured. Low densities of anthropophillic species of sand flies around the village indicated that sylvatic transmission was taking place. For the second year. 1484 sand flies of 16 species were caught. The most common were L. olmeca olmeca (21.7%), L. cruciata (19.2%) and L. ovallesi (14.1%). Similarly, more females were caught than males. Thirty-five females of five species were found infected with flagellates believed to be Leishmania sp. The highest infection rate was found in L. olmeca olmeca (7.1%) followed by L. cruciata (4.5%) and L. ovallesi (1.1%). These data plus other evidence on the epidemiology of human cases and results from reservoir studies are discussed in relation to the sylvatic transmission cycle.

GAOCMAO and its oil spill response activities in the Gulf

International Nuclear Information System (INIS)

Al-Sada, M.S.

1994-01-01

Gulf Area Oil Companies Mutual Aid Organisation (GAOCMAO), has taken active steps in cooperation with its member companies, national and regional environmental organisation (ROPME) in an attempt to protect the Gulf from various sources of pollution. Specific attention was given to oil pollution response in terms of stockpiling of adequate equipment, training of personal and coordination through the application of pre-prepared contingency plans. All these activities tell us that a lot has been done to protect the Gulf environment from pollution. GAOCMAO, after many years of successful development looks to the future with confidence and renewed vigor. It is the intention of this organisation to enhance its member companies capabilities to respond to major incidents and to work closely with the national governmental, regional and international environmental organisations throughout the world, in fields appropriate to the Gulf oil industry. (author)

Reproduction of Persian Gulf anemone fish (Amphiprion clarkii) in captive system

OpenAIRE

Javad Sahandi

2011-01-01

The present study was carried out to assess the reproduction of Persian Gulf anemone fish,Amphiprion clarkii (Bennett, 1830), in captive conditions with artificial features. Persian Gulf, havinggood relation with Indian Ocean, is one of the important niches of fishes and the specific position ofthis Gulf makes its fishes popular. The yellow tail clown fish which originates to this gulf has the bestsurvival rate and health than the other areas. Live food is the most important factor in product...

Africa and Arab Gulf states : divergent development paths and prospects for convergence

OpenAIRE

Fofack, Hippolyte

2009-01-01

In spite of the similarities between Sub-Saharan Africa and the Arab Gulf region (Gulf Cooperation Council states), development policies implemented in these two regions of the world have produced markedly different and even divergent outcomes. While Gulf Cooperation Council states have drawn on hydrocarbon revenues to dramatically transform their economic landscape, Sub-Saharan African co...

Gulf war illness--better, worse, or just the same? A cohort study.

Science.gov (United States)

Hotopf, Matthew; David, Anthony S; Hull, Lisa; Nikalaou, Vasilis; Unwin, Catherine; Wessely, Simon

2003-12-13

Firstly, to describe changes in the health of Gulf war veterans studied in a previous occupational cohort study and to compare outcome with comparable non-deployed military personnel. Secondly, to determine whether differences in prevalence between Gulf veterans and controls at follow up can be explained by greater persistence or greater incidence of disorders. Occupational cohort study in the form of a postal survey. Military personnel who served in the 1991 Persian Gulf war; personnel who served on peacekeeping duties to Bosnia; military personnel who were deployed elsewhere ("Era" controls). All participants had responded to a previous survey. United Kingdom. Self reported fatigue measured on the Chalder fatigue scale; psychological distress measured on the general health questionnaire, physical functioning and health perception on the SF-36; and a count of physical symptoms. Gulf war veterans experienced a modest reduction in prevalence of fatigue (48.8% at stage 1, 43.4% at stage 2) and psychological distress (40.0% stage 1, 37.1% stage 2) but a slight worsening of physical functioning on the SF-36 (90.3 stage 1, 88.7 stage 2). Compared with the other cohorts Gulf veterans continued to experience poorer health on all outcomes, although physical functioning also declined in Bosnia veterans. Era controls showed both lower incidence of fatigue than Gulf veterans, and both comparison groups showed less persistence of fatigue compared with Gulf veterans. Gulf war veterans remain a group with many symptoms of ill health. The excess of illness at follow up is explained by both higher incidence and greater persistence of symptoms.

Gulf Arab women's transition to motherhood.

Science.gov (United States)

Missal, Bernita

2013-01-01

This paper is a report of the findings of a study of Gulf Arab women's perspectives of the transition to motherhood. Transition to motherhood is a universal phenomenon in which every culture has its own expectations and varying supports for women moving through this transition. International studies have provided models or categories of maternal responses related to cultural aspects of transition to motherhood. However, no known research has focused on transition to motherhood among Gulf Arab women. In the initial cohort seventeen first time Gulf Arab mothers in the United Arab Emirates were interviewed during the following three times: before childbirth, two-four weeks after childbirth, and forty-days after childbirth. A second cohort of seventeen first time new mothers was interviewed after childbirth in Sultanate of Oman. Four patterns were identified as indicators of change as women transitioned into motherhood: 1) Women's personal transition: women changed from feeling of freedom to feeling of dependency to self-confidence. 2) Mother/baby relationships: women changed from fear, anxiety, and uncertainty to feelings of care and confidence. 3) Family influences: women experienced family support to being integrated and feeling respected by family. 4) Cultural/religious beliefs and practices: women felt they were initially observers of culture, to experiencing cultural/religious beliefs and practices. This was followed by accomplishment in childbearing and childrearing practices. As Gulf Arab new mothers made the transition to motherhood, four implications for international nursing practice emerged: 1) patient teaching to help relieve anxiety, fears, and uncertainty, 2) facilitation of mother/baby relationships, 3) family-centered care, and 4) the importance of cultural/religious beliefs and practices to new mothers.

On the Loop Current Penetration into the Gulf of Mexico

Science.gov (United States)

Weisberg, Robert H.; Liu, Yonggang

2017-12-01

The Gulf of Mexico Loop Current generally intrudes some distance into the Gulf of Mexico before shedding an anticyclonic eddy and retreating back to its more direct entry to exit pathway. The control of this aperiodic process remains only partially known. Here we describe the evolution of the Loop Current throughout the era of satellite altimetry, and offer a mechanistic hypothesis on Loop Current intrusion. As a complement to the known effects of Loop Current forcing on the west Florida shelf circulation, we argue that the west Florida shelf, in turn, impacts the Loop Current evolution. A Self-Organizing Map analysis shows that anomalous northward penetrations of the Loop Current into the Gulf of Mexico occur when the eastern side of Loop Current is positioned west from the southwest corner of the west Florida shelf, whereas the more direct inflow to outflow route occurs when the eastern side of the Loop Current comes in contact with the southwest corner of the west Florida shelf. In essence, we argue that the west Florida shelf anchors the Loop Current in its direct path configuration and that farther northward penetration into the Gulf of Mexico occurs when such anchoring is released. To test of this hypothesis heuristically, we estimate that the dissipation and buoyancy work due to known Loop Current forcing of the west Florida shelf circulation (when in contact with the southwest corner) may exceed the pressure work required for the Loop Current to advance against the ambient Gulf of Mexico fluid.Plain Language SummaryThe Gulf of Mexico Loop Current may intrude far into the Gulf of Mexico or take a more direct entry to exit pathway. Such Loop Current behaviors are described using remote observations by satellites, and a heuristic hypothesis on the control of Loop Current intrusion is presented. We argue that energy dissipation and buoyancy work by the west Florida shelf circulation, when the Loop Current contacts the southwest corner of the west Florida shelf

Nekton from Fishery-Independent Trawl Samples in U.S. Gulf of Mexico Estuaries: A Comparative Assessment of Gulf Estuarine Systems (CAGES), 1973-2007 (NODC Accession 0115183)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The purpose of CAGES (Comparative Assessment of Gulf Estuarine Systems) is to compile the fishery independent data from five Gulf States into a database to more...

Gulf Coast Clean Energy Application Center

Energy Technology Data Exchange (ETDEWEB)

Dillingham, Gavin [Houston Advanced Research Center, TX (United States)

2013-09-30

The Gulf Coast Clean Energy Application Center was initiated to significantly improve market and regulatory conditions for the implementation of combined heat and power technologies. The GC CEAC was responsible for the development of CHP in Texas, Louisiana and Oklahoma. Through this program we employed a variety of outreach and education techniques, developed and deployed assessment tools and conducted market assessments. These efforts resulted in the growth of the combined heat and power market in the Gulf Coast region with a realization of more efficient energy generation, reduced emissions and a more resilient infrastructure. Specific t research, we did not formally investigate any techniques with any formal research design or methodology.

76 FR 41766 - Gulf of Mexico Fishery Management Council; Public Meeting

Science.gov (United States)

2011-07-15

... group Spanish mackerel, and Gulf group cobia. It also contains measures to remove cero, little tunny... separate cobia into Atlantic and Gulf migratory groups. Similar measures are being proposed for the...

77 FR 59185 - Gulf of Mexico Citizen Advisory Committee; Notice of Charter Renewal

Science.gov (United States)

2012-09-26

... ENVIRONMENTAL PROTECTION AGENCY [FRL-9734-9] Gulf of Mexico Citizen Advisory Committee; Notice of... with the provisions of the Federal Advisory Committee Act (FACA), 5 U.S.C. App.2, the Gulf of Mexico... the water quality and living resources of the Gulf of Mexico. FOR FURTHER INFORMATION CONTACT...

Gulf war illness—better, worse, or just the same? A cohort study

Science.gov (United States)

Hotopf, Matthew; David, Anthony S; Hull, Lisa; Nikalaou, Vasilis; Unwin, Catherine; Wessely, Simon

2003-01-01

Objectives Firstly, to describe changes in the health of Gulf war veterans studied in a previous occupational cohort study and to compare outcome with comparable non-deployed military personnel. Secondly, to determine whether differences in prevalence between Gulf veterans and controls at follow up can be explained by greater persistence or greater incidence of disorders. Design Occupational cohort study in the form of a postal survey. Participants Military personnel who served in the 1991 Persian Gulf war; personnel who served on peacekeeping duties to Bosnia; military personnel who were deployed elsewhere (“Era” controls). All participants had responded to a previous survey. Setting United Kingdom. Main outcome measures Self reported fatigue measured on the Chalder fatigue scale; psychological distress measured on the general health questionnaire, physical functioning and health perception on the SF-36; and a count of physical symptoms. Results Gulf war veterans experienced a modest reduction in prevalence of fatigue (48.8% at stage 1, 43.4% at stage 2) and psychological distress (40.0% stage 1, 37.1% stage 2) but a slight worsening of physical functioning on the SF-36 (90.3 stage 1, 88.7 stage 2). Compared with the other cohorts Gulf veterans continued to experience poorer health on all outcomes, although physical functioning also declined in Bosnia veterans. Era controls showed both lower incidence of fatigue than Gulf veterans, and both comparison groups showed less persistence of fatigue compared with Gulf veterans. Conclusions Gulf war veterans remain a group with many symptoms of ill health. The excess of illness at follow up is explained by both higher incidence and greater persistence of symptoms. PMID:14670878

Gulf War Illness and the Health of Gulf War Veterans

Science.gov (United States)

2008-11-01

after his return.432 Seventy- five Gulf War personnel were hospitalized for chicken pox during deployment.1431 Only a few cases of viral hepatitis were...and independent of circulating uranium levels. Of particular interest are findings from an ongoing study at the University of New Mexico indicating that...periods, can produce chronic neurological or behavioral effects. The New Mexico study is an important example of a particularly relevant approach

Gulf digs in to tap a major uranium orebody

International Nuclear Information System (INIS)

Jackson, D.

1977-01-01

The progress and future plans of Gulf Mineral Resources Co. for tapping and developing a major uranium orebody via two concrete-lined shafts in the Grants uranium mineral belt in New Mexico are discussed. The mineralogy of the Grants belt is discussed as it relates to the Gulf development project. Numerous pictures of the operation are included

Gulf of Mexico Sales 142 and 143: Central and western planning areas

International Nuclear Information System (INIS)

1992-11-01

This environmental impact statement (EIS) addresses two proposed Federal actions, lease Sales 142 and 143, that will offer for lease Gulf of Mexico Outer Continental Shelf (OCS) areas that may contain economically recoverable oil and gas resources. The lease sales are proposed for 1993 and include lease blocks in the Central Gulf of Mexico Planning Area (CPA) and Western Gulf of Mexico Planning Area (WPA). Up to 10,099 blocks will be available for lease under the two proposed actions; only a small percentage is expected to be actually leased. On average, 401 blocks in the Central Gulf and 264 blocks in the Western Gulf have been leased in individual Gulf of Mexico OCS lease sales since 1984. Of the blocks that will be leased as a result of the two proposed actions, only a portion will be drilled and result in subsequent production. The scoping process was used to obtain information and comments on the proposed actions and the potential environmental effects from diverse interests, including the affected States, Federal agencies, the petroleum industry, environmental and public interest groups, and concerned individuals. This volume, Volume 2, reports on impacts from Sales 142 and 143

Sediment dispersal in the macro tidal Gulf of Kachchh, India

Digital Repository Service at National Institute of Oceanography (India)

Chauhan, O.S.

of the inner gulf is marked with U and V shaped cuttings extending in the parallel clays, deposited in an earlier phase of deposition. In the outer gulf, there exists a palaeo-channel, buried under 18 m thick sediments (in the central region). Existence...

33 CFR 166.200 - Shipping safety fairways and anchorage areas, Gulf of Mexico.

Science.gov (United States)

2010-07-01

... anchorage areas, Gulf of Mexico. 166.200 Section 166.200 Navigation and Navigable Waters COAST GUARD... the erection of structures therein to provide safe approaches through oil fields in the Gulf of Mexico... for Fairway Anchorages in the Gulf of Mexico. Structures may be placed within an area designated as a...

Energy partnership: Israel and the Persian Gulf

International Nuclear Information System (INIS)

Bahgat, G.

2005-01-01

In the early 2003, American troops toppled the regime of Saddam Hussein in Iraq. Few weeks later, President Bush introduced his vision to solve the Arab-Israeli conflict in what is known as the 'road map'. These interrelated developments confirm the connection between the two Middle-Eastern sub-systems--the Persian Gulf and the Levant and provide an opportunity to achieve a comprehensive peace. Regional economic cooperation is seen as the sine qua non of a durable peace. This study examines the potential for an energy partnership between the Persian Gulf hydrocarbon producers and Israel

Energy partnership: Israel and the Persian Gulf

International Nuclear Information System (INIS)

Bahgat, G.

2005-01-01

In early 2003, American troops toppled the regime of Saddam Hussein in Iraq. Few weeks later, President Bush introduced his vision to solve the Arab-Israeli conflict in what is known as the ''road map''. These interrelated developments confirm the connection between the two Middle-Eastern sub-systems-the Persian Gulf and the Levant and provide an opportunity to achieve a comprehensive peace. Regional economic cooperation is seen as the sine qua non of a durable peace. This study examines the potential for an energy partnership between the Persian Gulf hydrocarbon producers and Israel. (author)

Gulf International Conference on Applied Mathematics 2013

CERN Document Server

Advances in Applied Mathematics

2014-01-01

This volume contains contributions from the Gulf International Conference in Applied Mathematics, held at the Gulf University for Science & Technology. The proceedings reflects the three major themes of the conference. The first of these was mathematical biology, including a keynote address by Professor Philip Maini. The second theme was computational science/numerical analysis, including a keynote address by Professor Grigorii Shishkin. The conference also addressed more general applications topics, with papers in business applications, fluid mechanics, optimization, scheduling problems, and engineering applications, as well as a keynote by Professor Ali Nayfeh.

Gulfs of Suez and Aqaba: New insights from recent satellite-marine potential field data

Science.gov (United States)

Almalki, Khalid A.; Mahmud, Syed A.

2018-01-01

Previous models and interpretations of crustal geometry and the nature of the crust under the Gulfs of Suez and Aqaba have generally been based on a local or small scale and have been limited due to a lack of data. The few studies that present larger scale crustal and uppermost mantle structure were dependent on one type of data with no consideration of other geological and/or geophysical features. Satellite-marine potential field data provide for the first time a full coverage dataset of the Gulfs of Suez and Aqaba as well as the Sinai area at the same scale which allows for a better understanding of crustal domains and geometry and the interplay between tectonic events. To that end, our forward models of magnetic and gravity data constrained by seismic data and available geological information in this area suggest that the crustal domains in the Gulf of Aqaba are more complicated than those in the Gulf of Suez. Our result supports continental rifting under most of the Gulf of Suez and a combination of transitional and continental crusts under the Gulf of Aqaba. Yet, there is no evidence of oceanic segment development in these gulfs. Regardless of oceanic or transitional crust, the models support a link between the Arabia and Sinai plates at the central Gulf of Aqaba. The data also support that Red Sea tectonism has no connection to or influence on both gulfs. The result suggests a continuation of lithological elements from land into the eastern part of the Gulf of Suez. Our synthesis and interpretations may play an important role in the reassessment of the tectonic history and extension of this important rift system.

Modelling the temporal and spatial distribution of ecological variables in Beibu Gulf

Science.gov (United States)

Pan, H.; Huang, L.; Yang, S.; Shi, D.; Pan, W.

2017-12-01

Beibu Gulf is an important semi-enclosed gulf located in northern South China Sea. It is rich in natural resources and its coastal rim is undergoing a rapid economic growth in recent years. Study on the spatial and temporal distribution of ecological variables by the influence of physical and biological processes in Beibu Gulf can provide the theoretical basis for the utilization of resources and environmental protection. Based on the MEC three-dimensional hydrodynamic model, a nutrient-phytoplankton-zooplankton-detritus (NPZD) model was applied to simulate the distribution of ecological variables in Beibu Gulf. The result shows that the ecosystem in Beibu Gulf is significantly influenced by dynamic conditions. In autumn and winter, great amount of nutrient-rich water from western Guangdong coastal area passes through Qiongzhou Strait and flows into Beibu Gulf, with about 108.3×103 t of inorganic nitrogen and 3.7×103 t of phosphate annually, leading to phytoplankton bloom. In summer, most of the nutrients come from rivers so high concentrations of nutrients and chlorophyll-a appear on estuaries. The annual net nutrient inputs from South China Sea into Beibu Gulf are 66.6×103 t for inorganic nitrogen and 4.6×103 t for phosphate. Phytoplankton plays an important role in nutrients' refreshment: a) Absorption by the process of photosynthesis is the biggest nutrient sink. b) Cellular release from dead phytoplankton is the biggest source in inorganic budget, making up for 33.4% of nitrogen consumed by photosynthesis while the process of respiration is the biggest source in phosphate budget, making up for 32.4% of phosphorus consumed by photosynthesis. c) Mineralization from detritus is also a considerable supplement of inorganic nutrients. Overall, biological process has more influence than physical process on the nutrient cycle budget in Beibu Gulf. The comparison of the result with remote sensing and in-situ data indicates that the model is able to simulate the

A study of burrow morphology in representative axiidean and gebiidean mud shrimps, from the Persian Gulf and Gulf of Oman, Iran

Directory of Open Access Journals (Sweden)

Vahid Sepahvand

Full Text Available Mud shrimps (formerly Thalassinidea are common burrow dwelling decapod crustaceans in the littoral zone of the Persian Gulf and Gulf of Oman. Their burrow morphology was investigated using foam casting methods. The present study shows that the burrow morphology in Upogebia carinicauda is not consistent and the recorded variations are based on habitat type and some physical characteristics of sediments. Adult burrow morphology in sandy-muddy substrate with shells, and boulder field habitats were Y-shaped and complex burrows of horizontal channels with turning chambers and vertical connections to internal passages or crevices of boulders, respectively. In burrows of U. carinicauda, some narrow passages, connected to the upper part of adult burrows in sandy-muddy habitats, belong to juveniles. Another species, Neocallichirus jousseaumei was found under boulders in sandy-muddy habitats of the Gulf of Oman and Qeshm Island, Persian Gulf. Since this type of habitat is special in some features, no conspicuous ex-current openings (usually obvious as conical mounds of extruded sediment have been observed on the sediment surface; as these were hidden among the boulders surrounded by mixed sand and shells. The only method for observing this type of burrow was to remove the boulders by hand or lever.

78 FR 36309 - Research Advisory Committee on Gulf War Veterans' Illnesses, Notice of Meeting

Science.gov (United States)

2013-06-17

... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses, Notice... Act, 5 U.S.C. App., that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... operations during the Gulf War. [[Page 36310

Determination of 137Cs and 60Co pollution in the area of the Laguna Verde Nuclear Power Plant, Mexico

International Nuclear Information System (INIS)

Salas Mar, Bernardo

2015-01-01

The project 'Radiological Analysis of Environmental Samples in the Gulf of Mexico and the coast of Quintana Roo', had the aim of identifying and quantifying anthropogenic radionuclides in environmental samples consisting of silt, sand and sea water. This paper presents the results of the radiological analysis of these samples, which was made in the multichannel system for gamma spectrometry with hyper-pure germanium detector in the Laboratory of Radiological Analysis of Environmental Samples, located at the Physics Department, Faculty of Sciences, of the Autonomous National University of Mexico (UNAM). The sampled points are along the coast of the contiguous states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatan and Quintana Roo. This paper presents the qualitative and quantitative concentrations of the main identified anthropogenic radionuclides 60 Co and 137 Cs. (authors)

Subtidal micro and meiobenthic community structure in the Gulf of Kachchh

Digital Repository Service at National Institute of Oceanography (India)

Ingole, B.S.; Goltekar, R.

Community structure of the micro- and meiobenthos of subtidal sediment from the Gulf of Kachchh were investigated during April 2002 (premonsoon season). Sediment samples were collected from 23 stations representing the entire Gulf area. A total...

Tropical cyclone disasters in the Gulf of Thailand

Directory of Open Access Journals (Sweden)

Suphat Vongvisessomjai

2009-07-01

Full Text Available The origin of tropical cyclones in the South China Sea is over a vast deep sea, southeast of the Philippines. The severetropical cyclones in summer with northerly tracks attack the Philippines, China, Korea and Japan, while the moderate ones inthe rainy season with northwesterly tracks pass Vietnam, Laos and northern Thailand. In October, November and December, the tropical cyclones are weakened and tracks shift to a lower latitude passing the Gulf of Thailand. Tropical cyclone disasters in the Gulf of Thailand due to strong winds causing storm surges and big waves or heavy rainfall over high mountains in causing floods and land slides result in moderate damages and casualties. Analyses are made of six decades of data of tropical cyclones from 1951-2006 having averaged numbers of 3 and 13 in Thailand and the South China Sea respectively. Detailed calculation of surges and wave heights of the 5 disastrous tropical cyclones in the Gulf of Thailand reveal that the Upper Gulf of Thailand with a limited fetch length of about 100 km in north/south direction and about 100 km width in the east/west direction, resulted in a limited maximum wave height of 2.3-2.5 m and maximum storm surge height of 1.2 m generated by Typhoon Vae (1952, while the east coast, with longer fetch lengthbut still limited by the existence of its shoreline, resulted in an increased maximum wave height of 4 m and maximum storm surge height of 0.6 m in the Upper Gulf of Thailand generated by Typhoon Linda (1997. These are the Probable Maximum Cyclones here.The southern shoreline, with unlimited fetch length on the east by tropical cyclones approaching from the South China Sea, generated maximum wave height of 6-11 m by Typhoon Gay (1989, resulting in more casualties and damages. Note that storm surges on the southern shorelines with steep slopes are small due to the short distance of shallow shorelines in receiving wind stresses for piling up sea levels. These disasters can be

[Size structure, gonadic development and diet of the fish Diapterus rhombeus (Gerreidae) in the Pom-Atasta fluvial-deltaic system, Campeche, Mexico].

Science.gov (United States)

Aguirre-León, Arturo; Díaz-Ruiz, Silvia

2006-06-01

The fish Diapterus rhombeus was studied during an annual cycle from 1992 to 1993 in the fluvial-deltaic Pom-Atasta system associated with Terminos Lagoon, Campeche, Mexico. It is a dominant species in the system, based on its numeric abundance, weight, high frequency and wide distribution. A total of 745 individuals were obtained, with a weigth of 2 890.2 g and length ranging from 3.0 to 16.7 cm. The annual variation of the allometric coefficient b was from 2.71 to 3.345. The condition factor varied from 0.711 to 0.934. The statistical analysis shows significant differences (p < 0.05) between the seasons of the year and the habitats of the system for the weight, the longitude and the condition factor K, which reflects the space-temporal utilization of the system for the species. The population present at Pom-Atasta, consists mainly by juvenile and few preadults individuals in gonadal stages I, II, and III, and more females than males were recorded. This species utilizes the system as a nursery area, growth and feeding area. It has a varied trophic spectrum, and consumes at least eight different groups. Its principal food items are undetermined organic matter, foraminifers, ostracods and tanaidaceans. It is a first order consumer. The Pom-Atasta system is located in a zone of intense fishing and oil activity, so it is important to advance in the knowledge of its fishing resources.

Gulf of Mexico Sales 142 and 143: Central and western planning areas

International Nuclear Information System (INIS)

1992-11-01

This environmental impact statement (EIS) addresses two proposed Federal actions, lease Sales 142 and 143, that will offer for lease Gulf of Mexico Outer Continental Shelf (OCS) areas that may contain economically recoverable oil and gas resources. The lease sales are proposed for 1993 and include lease blocks in the Central Gulf of Mexico Planning Area (CPA) and Western Gulf of Mexico Planning Area (WPA). Up to 10,099 blocks will be available for lease under the two proposed actions; only a small percentage is expected to be actually leased. On average, 401 blocks in the Central Gulf and 264 blocks in the Western Gulf have been leased in individual Gulf of Mexico OCS lease sales since 1984. Of the blocks that will be leased as a result of the two proposed actions, only a portion will be drilled and result in subsequent production. The scoping process was used to obtain information and comments on the proposed actions and the potential environmental effects from diverse interests, including the affected States, Federal agencies, the petroleum industry, environmental and public interest groups, and concerned individuals. The input from these sources aided in the identification of significant issues, possible alternatives to the proposed actions, and potential mitigating measures

Gulf War veterans' health: medical evaluation of a U.S. cohort.

Science.gov (United States)

Eisen, Seth A; Kang, Han K; Murphy, Frances M; Blanchard, Melvin S; Reda, Domenic J; Henderson, William G; Toomey, Rosemary; Jackson, Leila W; Alpern, Renee; Parks, Becky J; Klimas, Nancy; Hall, Coleen; Pak, Hon S; Hunter, Joyce; Karlinsky, Joel; Battistone, Michael J; Lyons, Michael J

2005-06-07

United States military personnel reported various symptoms after deployment to the Persian Gulf during the 1991 Gulf War. However, the symptoms' long-term prevalence and association with deployment remain controversial. To assess and compare the prevalence of selected medical conditions in a national cohort of deployed and nondeployed Gulf War veterans who were evaluated by direct medical and teledermatologic examinations. A cross-sectional prevalence study performed 10 years after the 1991 Gulf War. Veterans were examined at 1 of 16 Veterans Affairs medical centers. Deployed (n = 1061) and nondeployed (n = 1128) veterans of the 1991 Gulf War. Primary outcome measures included fibromyalgia, the chronic fatigue syndrome, dermatologic conditions, dyspepsia, physical health-related quality of life (Short Form-36 [SF-36]), hypertension, obstructive lung disease, arthralgias, and peripheral neuropathy. Of 12 conditions, only 4 conditions were more prevalent among deployed than nondeployed veterans: fibromyalgia (deployed, 2.0%; nondeployed, 1.2%; odds ratio, 2.32 [95% CI, 1.02 to 5.27]); the chronic fatigue syndrome (deployed, 1.6%; nondeployed 0.1%; odds ratio, 40.6 [CI, 10.2 to 161]); dermatologic conditions (deployed, 34.6%; nondeployed, 26.8%; odds ratio, 1.38 [CI, 1.06 to 1.80]), and dyspepsia (deployed, 9.1%; nondeployed, 6.0%; odds ratio, 1.87 [CI, 1.16 to 2.99]). The mean physical component summary score of the SF-36 for deployed and nondeployed veterans was 49.3 and 50.8, respectively. Relatively low participation rates introduce potential participation bias, and deployment-related illnesses that resolved before the research examination could not, by design, be detected. Ten years after the Gulf War, the physical health of deployed and nondeployed veterans is similar. However, Gulf War deployment is associated with an increased risk for fibromyalgia, the chronic fatigue syndrome, skin conditions, dyspepsia, and a clinically insignificant decrease in the SF-36

Binational collaboration to study Gulf of Mexico's harmful algae

Science.gov (United States)

Soto, Inia; Hu, Chuanmin; Steidinger, Karen; Muller-Karger, Frank; Cannizzaro, Jennifer; Wolny, Jennifer; Cerdeira-Estrada, Sergio; Santamaria-del-Angel, Eduardo; Tafoya-del-Angel, Fausto; Alvarez-Torres, Porfirio; Herrera Silveira, Jorge; Allen, Jeanne

2012-01-01

Blooms of the toxic marine dinoflagellate Karenia brevis cause massive fish kills and other public health and economic problems in coastal waters throughout the Gulf of Mexico [Steidinger, 2009]. These harmful algal blooms (HABs) are a gulf-wide problem that require a synoptic observing system for better serving decision-making needs. The major nutrient sources that initiate and maintain these HABs and the possible connectivity of blooms in different locations are important questions being addressed through new collaborations between Mexican and U.S. researchers and government institutions. These efforts were originally organized under the U.S./Mexico binational partnership for the HABs Observing System (HABSOS), led by the U.S. Environmental Protection Agency's Gulf of Mexico Program (EPAGMP) and several agencies in Veracruz, Mexico, since 2006. In 2010 these efforts were expanded to include other Mexican states and institutions with the integrated assessment and management of the Gulf of Mexico Large Marine Ecosystem (GoMLME) program sponsored by the Global Environment Facility (GEF), the United Nations Industrial Development Organization (UNIDO), the Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT), and the National Oceanic and Atmospheric Administration (NOAA).

77 FR 64597 - Proposed Information Collection (Survey of Chronic Gastrointestinal Illness in Persian Gulf...

Science.gov (United States)

2012-10-22

... of Chronic Gastrointestinal Illness in Persian Gulf Veterans (Irritable Bowel Syndrome--Diarrhea... information needed to evaluate chronic gastrointestinal disorders in Persian Gulf War Veterans. DATES: Written... Gastrointestinal Illness in Persian Gulf Veterans, VA Form 10-21092c. OMB Control Number: 2900-0742. Type of Review...

77 FR 31071 - Research Advisory Committee on Gulf War Veterans' Illnesses, Notice of Meeting

Science.gov (United States)

2012-05-24

... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses, Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... Asia theater of operations during the Gulf War. The Committee will review VA program activities related...

75 FR 28686 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

Science.gov (United States)

2010-05-21

... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... Asia theater of operations during the Gulf War. The Committee will review VA program activities related...

76 FR 9407 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

Science.gov (United States)

2011-02-17

... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... Southwest Asia theater of operations during the Gulf War. The Committee will review VA program activities...

75 FR 65405 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

Science.gov (United States)

2010-10-22

... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... Asia theater of operations during the Gulf War. The Committee will review VA program activities related...

Who Benefits from Foreign Universities in the Arab Gulf States?

Science.gov (United States)

Wilkins, Stephen

2011-01-01

The Arab Gulf States are the largest hosts of international branch campuses globally. By increasing higher education capacity in the Arab Gulf States by over 30,000 places, foreign institutions have, through various forms of transnational provision, increased significantly the accessibility of higher education to young people living in these…

38 CFR 21.5053 - Restoration of contributions (Persian Gulf War).

Science.gov (United States)

2010-07-01

... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Restoration of contributions (Persian Gulf War). 21.5053 Section 21.5053 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF... Assistance Under 38 U.S.C. Chapter 32 Participation § 21.5053 Restoration of contributions (Persian Gulf War...

On the future role of Gulf oil in meeting world energy demand

International Nuclear Information System (INIS)

Nagy Eltony, M.

1996-01-01

The validity of the view of a growing dependence of the world on oil from the Persian Gulf, and the resulting implications for the economies of the Gulf countries were examined. The prevailing view in the countries of the Persian Gulf is that the demand for oil will continue to rise, resulting in the inevitable increase in prices which will in turn alleviate the budget deficit problems currently encountered by most of the countries of the Gulf Cooperation Council (GCC) states. The author argues that the implication of this view is that GCC countries are failing to address the fundamental structural problems within their economies, and raise questions that tend to undermine this hypothesis of continuing dependence on Gulf oil by the rest of the world. Some of these factors are growing reliance on electricity and natural gas, environmental concerns, development of alternative fuels, political instability in the Gulf states and the potential interruption in supply, all of which tend to accelerate the trend towards reduced demand for Gulf oil. The following have been recommended as ways of avoiding the ultimate risk of huge unwanted oil reserves: diversification of the economies of GCC countries; reduced spending and increased investment in developing further capacity from non-GCC sources through cooperation and joint ventures between developing countries and international companies; a more active role in worldwide decisions relating to environmental concerns; and finally, a systematic monitoring and evaluation of the likely impacts of new developments in all areas of alternative energy. 17 refs

Investigating Deep-Marine Sediment Waves in the Northern Gulf of Mexico Using 3D Seismic Data

Science.gov (United States)

Wang, Z.; Gani, M. R.

2016-12-01

Deep-water depositional elements have been studied for decades using outcrop, flume tank, sidescan sonar, and seismic data. Even though they have been well recognized by researchers, the improvements in the quality of 3D seismic data with increasingly larger dimension allow detailed analysis of deep-water depositional elements with new insights. This study focuses on the deep-marine sediment waves in the northern Gulf of Mexico. By interpreting a 3D seismic dataset covering 635 km2 at Mississippi Canyon and Viosca Knoll areas, large sediment waves, generated by sediment gravity flows, were mapped and analyzed with various seismic attributes. A succession of sediment waves, approximately 100 m in thickness, is observed on the marine slope that tapers out at the toe of the slope. The individual sediment wave exhibits up to 500 m in wavelength and up to 20 m in height. The wave crests oriented northeast-southwest are broadly aligned parallel to the regional slope-strike, indicating their sediment gravity flow origin. The crestlines are straight or slightly sinuous, with sinuosity increasing downslope. Their anti-dune patterns likely imply the presence of supercritical flows. The sediment waves have a retrogradational stacking pattern. Seismic amplitude maps of each sediment wave revealed that after depositing the majority of sheet-like sands on the upper slope, sediment gravity flows started to form large sediment waves on the lower slope. The steep and narrow upcurrent flanks of the sediment waves always display higher amplitudes than the gentle and wide downcurrent flanks, indicating that the sands were likely preferentially trapped along the upcurrent flanks, whereas the muds spread along the downcurrent flanks. The formation of sediment waves likely requires a moderate sand-mud ratio, as suggested by these observations: (1) absence of sediment waves on the upper slope where the sands were mainly deposited as unconfined sheets with a high sand-mud ratio; (2

Groundwater-derived nutrient inputs to the Upper Gulf of Thailand

Science.gov (United States)

Burnett, William C.; Wattayakorn, Gullaya; Taniguchi, Makoto; Dulaiova, Henrieta; Sojisuporn, Pramot; Rungsupa, Sompop; Ishitobi, Tomotoshi

2007-01-01

We report here the first direct measurements of nutrient fluxes via groundwater discharge into the Upper Gulf of Thailand. Nutrient and standard oceanographic surveys were conducted during the wet and dry seasons along the Chao Phraya River, Estuary and out into the Upper Gulf of Thailand. Additional measurements in selected near-shore regions of the Gulf included manual and automatic seepage meter deployments, as well as nutrient evaluations of seepage and coastal waters. The river transects characterized the distribution of biogeochemical parameters in this highly contaminated urban environment. Seepage flux measurements together with nutrient analyses of seepage fluids were used to estimate nutrient fluxes via groundwater pathways for comparison to riverine fluxes. Our findings show that disseminated seepage of nutrient-rich mostly saline groundwater into the Upper Gulf of Thailand is significant. Estimated fluxes of dissolved inorganic nitrogen (DIN) supplied via groundwater discharge were 40-50% of that delivered by the Chao Phraya River, inorganic phosphate was 60-70%, and silica was 15-40%. Dissolved organic nitrogen (DON) and phosphorus (DOP) groundwater fluxes were also high at 30-40% and 30-130% of the river inputs, respectively. These observations are especially impressive since the comparison is being made to the river that is the largest source of fresh water into the Gulf of Thailand and flows directly through the megacity of Bangkok with high nutrient loadings from industrial and domestic sources.

Sediment pollution by heavy metals in the Strymonikos and Ierissos Gulfs, North Aegean Sea, Greece.

Science.gov (United States)

Stamatis, Nikolaos; Ioannidouw, Despina; Christoforidis, Achilleas; Koutrakis, Emmanouil

2002-11-01

Surface sediment samples from Strymonikos and Ierissos Gulfs were analyzed for Cu, Pb, Zn, Cr and Ni. The results showed that the sediment of Ierissos Gulf is more polluted with Cu, Pb, and Zn as compared to that of Strymonikos Gulf. The benthal area located off the load-out facility of the mining operations in the town of Stratoni, in Ierissos Gulf is established as the most polluted region. The distribution of Cr and Ni in both gulfs indicates the natural origin of these metals with the weathering of Strymon River and of other smaller rivers rocks being responsible for their enrichment.

Biomarkers of Aryl-hydrocarbon Receptor Activity in Gulf Killifish (Fundulus grandis) From Northern Gulf of Mexico Marshes Following the Deepwater Horizon Oil Spill.

Science.gov (United States)

Dubansky, Benjamin; Rice, Charles D; Barrois, Lester F; Galvez, Fernando

2017-07-01

Following the Deepwater Horizon oil spill, shorelines throughout the Barataria Basin of the northern Gulf of Mexico in Louisiana were heavily oiled for months with Macondo-252 oil, potentially impacting estuarine species. The Gulf killifish (Fundulus grandis) has been identified as a sentinel species for the study of site-specific effects of crude oil contamination on biological function. In November and December 2010, 4-5 months after the Macondo well was plugged and new oil was no longer spilling into the Gulf waters, Gulf killifish were collected across the Barataria Basin from 14 sites with varying degrees of oiling. Fish collected from oiled sites exhibited biological indications of exposure to oil, including increase in cytochrome P4501A (CYP1A) mRNA transcript and protein abundances in liver tissues. Immunohistochemistry revealed increases in gill, head kidney, and intestinal CYP1A protein at heavily oiled sites. Intestinal CYP1A protein was a sensitive indicator of exposure, indicating that intestinal tissue plays a key role in biotransformation of AHR ligands and that ingestion is a probable route of exposure, warranting additional consideration in future studies.

78 FR 6404 - Agency Information Collection (Survey of Chronic Gastrointestinal Illness in Persian Gulf...

Science.gov (United States)

2013-01-30

... of Chronic Gastrointestinal Illness in Persian Gulf Veterans) Activities Under OMB Review AGENCY.... Survey of Chronic Gastrointestinal Illness in Persian Gulf Veterans, VA Form 10-21092a. b. VA Research...: Approximately 25 percent military troops who were deployed in the first Persian Gulf War returned with...

76 FR 31018 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

Science.gov (United States)

2011-05-27

... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... consequences of military service in the Southwest Asia theater of operations during the Gulf War. The Committee...

77 FR 2353 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

Science.gov (United States)

2012-01-17

... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... consequences of military service in the Southwest Asia theater of operations during the Gulf War. The Committee...

78 FR 77205 - Research Advisory Committee on Gulf War Veterans' Illnesses; Notice of Meeting

Science.gov (United States)

2013-12-20

... DEPARTMENT OF VETERANS AFFAIRS Research Advisory Committee on Gulf War Veterans' Illnesses; Notice... Advisory Committee Act) that the Research Advisory Committee on Gulf War Veterans' Illnesses will meet on... service in the Southwest Asia theater of operations during the Gulf War. The Committee will review VA...

The problems of the Arabian-Persian gulf

International Nuclear Information System (INIS)

Labrousse, H.

2004-01-01

The origin of the problems of the Arabian-Persian gulf is the delimitation of the maritime borders between the different bordering states and the exploitation rights of the offshore fields. Despite some bilateral agreements, the non-ratification by two bordering states of the United Nations convention on sea rights, deprives some negotiations of any legal framework. The Hormuz strait, the only opening of the gulf towards the Indian ocean, is tightly controlled by maritime powers which will never accept any interference with the maritime circulation in this pathway of considerable importance for petroleum transportation and for the world economy. (J.S.)

A two years study on vectors of cutaneous leishmaniasis: Evidence for sylvatic transmission cycle in the State of Campeche, Mexico

Directory of Open Access Journals (Sweden)

Eduardo A Rebollar-Téllez

1996-10-01

Full Text Available Vectors of cutaneous leishmaniasis in the State of Campeche were studied in relation to the transmission cycle of Leishmania (Le. mexicana. To determine how transmission of leishmaniasis occurs, we collected phlebotomine sand flies for two years. In the first year (October 1990 to November 1991 the collections were made with CDC light traps, Shannon traps and direct captures at natural shelters around the village (<200 m of La Libertad. In the second year (February 1993 to January 1994 the catches were performed at 8 km southeast of La Libertad in the forest. Female sand flies were examined for Leishmania. During the first year, 347 sand flies of nine species were collected, most of which were Lutzomyia deleoni (61.3%. When all nine species were considered, more females than males were captured. Low densities of anthropophillic species of sand flies around the village indicated that sylvatic transmission was taking place. For the second year, 1484 sand flies of 16 species were caught. The most common were L. olmeca olmeca (21.7%, L. cruciata (19.2% and L. ovallesi (14.1%. Similarly, more females were caught than males. Thirty-five females of five species were found infected with flagellates believed to be Leishmania sp. The highest infection rate was found in L. olmeca olmeca (7.1% followed by L. cruciata (4.5% and L. ovallesi (1.1%. These data plus other evidence on the epidemiology of human cases and results from reservoir studies are discussed in relation to the sylvatic transmission cycle.

A Call for More Research from the Arabian Gulf.

Science.gov (United States)

AlMarri, Fatemah; Al Sabah, Salman; Al Haddad, Eliana; Vaz, Jonathan D

2017-08-01

Obesity has become an epidemic in the Arabian Gulf, with the prevalence of obesity according to the latest report from the World Health Organization (WHO) showing the gulf region to be countries with the highest incidence of obesity in the 30% plus group. This study aims to examine publications on bariatric surgery and compare them with the other countries with a high incidence of obesity in the world. A literature review on bariatric surgery published from the earliest detected year of publication up until March 2016 using SCOPUS, PubMed, Ovid, and Google Scholar was conducted. Individual papers were assessed for types of surgery, preoperative measures, names of journals, authors, and outcomes. The data was analyzed using Endnote library and SPSS. Key words used in the search included "Bariatric Surgery," "Arabian Gulf," "Kuwait," "Qatar," "Saudi Arabia," "United Arab Emirates," "Oman," "USA," "Australia," "weight loss surgery," "sleeve gastrectomy," "gastric bypass," "gastric band," "mini-gastric bypass," "biliropancreatic diversion," "duodenal switch," and "intragastric balloon." Original papers, systematic reviews and case reports were included. From our review, the gastric sleeve proved to be the most popular published on procedure in the Arabian Gulf, whereas the USA had the highest percentage of gastric bypass surgeries and Australia had equivalent numbers when it came to gastric bypass and band. The numbers of studies from Saudi Arabia, Kuwait, UAE, Bahrain, Qatar, and Oman were 70, 44, 20, 7, 6, and 0, respectively. The mean impact factor of the published articles was 2.53 +/- 1.76 SD. Most of the publications were published in Obesity Surgery (29%), Surgery for Obesity and Related Diseases (5%), and Surgical Endoscopy (5%). The Arabian Gulf has both the highest percentage of bariatric procedures performed as well as the highest prevalence of obesity. However, they have the lowest number of publications and research when compared to their western

76 FR 21099 - Determinations Concerning Illnesses Discussed In National Academy of Sciences Reports on Gulf War...

Science.gov (United States)

2011-04-14

... of Sciences Reports on Gulf War and Health, Volumes 4 and 8 AGENCY: Department of Veterans Affairs... that the Secretary of Veterans Affairs, under the authority granted by the Persian Gulf War Veterans...), respectively titled Gulf War and Health, Volume 4: Health Effects of Serving in the Gulf War (Volume 4) and...

The Arabian Gulf and Security Policy: The Past as Present, the Present as Future

Science.gov (United States)

2009-04-01

permeates the Green Zone. Recent cooperation between the Maliki government and Sunni groups represents the tactical “divide-and-conquer” approach to... Kegan Paul, 2005), 76-77. 42. Zahlan, Modern Gulf States, 65. 43. Peck, Gulf Arab States, 38. 44. Zahlan, Modern Gulf States, 67. 70 JSOU Report

CMS: Simulated Physical-Biogeochemical Data, SABGOM Model, Gulf of Mexico, 2005-2010

Data.gov (United States)

National Aeronautics and Space Administration — This dataset contains monthly mean ocean surface physical and biogeochemical data for the Gulf of Mexico simulated by the South Atlantic Bight and Gulf of Mexico...

Efectos adversos de los programas de apoyo alimentario en los hogares rurales de Calakmul, Campeche

Directory of Open Access Journals (Sweden)

Brenda Olvera

2017-01-01

Full Text Available Objetivo: se analizaron los efectos no desea-dos de los apoyos gubernamentales del Pro-grama de Inclusión Social Prospera, Progra-ma de Apoyo Alimentario (PA L, Programa Estratégico para la Seguridad Alimentaria (PESA y Cocinas Escolares, en la producción de alimentos y en el patrón de consumo. Me-todología. En el año 2015 aplicamos 46 en-cuestas y 32 entrevistas a beneficiarios, cam-pesinos y funcionarios de los programas sociales, en un estudio de caso en dos comu-nidades de Calakmul, Campeche. Resulta-dos. En el estudio se argumenta que, con es-tos programas, a pesar de las mejoras en el estado de nutrición, la ingesta de alimentos altamente energéticos, ricos en grasas, azuca-res y sodio, ha incrementado. La gente de las dos comunidades tiende a consumir alimen-tos altamente industrializados, mientras que la producción e ingesta de los alimentos pro-ducidos en las milpas y los de traspatio dismi-nuyen. La desinformación, el bajo nivel educativo, la nula educación nutrimental y la gran disponibilidad de alimentos industriali-zados, son algunos de los factores que contri-buyen a tal consumo. Limitaciones. Fue una limitante durante el trabajo de campo acceder a la información oficial de los programas Prospera, PESA, PA L y Cocinas Escolares, so-bre cómo funcionan en la práctica dentro de las comunidades. No obstante esta situación se compenso realizando entrevistas a profun-didad a funcionarios públicos y en especial a los beneficiarios de los programas antes men-cionados, para conocer a fondo como funcio-na cada programa social. Conclusiones. Se concluye que los programas públicos analiza-dos requerirían componentes educativos más claros respecto a la calidad de los alimentos consumidos. Aunque no es el objetivo central de los programas analizados de fomentar la pro-ducción de alimentos deben de estimular la pro-ducción de alimentos tradicionales y sanos me-diante programas educativos.

Rickettsia parkeri in Gulf Coast Ticks, Southeastern Virginia, USA

Science.gov (United States)

2011-05-01

Rickettsia parkeri in Gulf Coast Ticks, Southeastern Virginia, USA Chelsea L. Wright, Robyn M. Nadolny, Ju Jiang, Allen L. Richards, Daniel E...Virginia. We found that 43.1% of the adult Gulf Coast ticks collected in the summer of 2010 carried Rickettsia parkeri, suggesting that persons living in...or visiting southeastern Virginia are at risk for infection with this pathogen. Rickettsia parkeri is an obligate intracellular bacterium belonging

Time required for gulf restoration uncertain

International Nuclear Information System (INIS)

Anon.

1992-01-01

Hurricane Andrew's long term effect on Gulf of Mexico oil and gas operations likely won't be known until next year. This paper reports that while damage assessments have moved beyond the emergency stage, many offshore service companies say reliable estimates of the extent of damage or cost of repairs still are unavailable. The time needed to complete restorations won't be known conclusively until more organized surveys are complete. Even then, many contractors say, gulf operators must decide how to handle damage at each location-whether to repair damaged structures or replace them by applying technology not available when many of the fields were developed. Some damaged installations will not be replaced or restored, and the production will be lost

[Immigration in the countries of the Gulf: some specific aspects].

Science.gov (United States)

Labib, A

1987-06-01

"This essay analyses some aspects of the in-migration flows to the Gulf countries, coming from other Arab countries as well as developing nations. Since the 80's, the Gulf countries have endorsed a restrictive policy concerning manpower import, even though they still need foreign workers. The Gulf countries pursue this policy as they fear that the presence of millions of foreign labourers will create social tension. The situation of the foreign labour force is uncertain and is bound to the role of the middleman, the local kafil, and that of the recruiting agencies. Rotation of foreign workers is very high. It has reached the 10 million mark in ten years." (SUMMARY IN ENG) excerpt

77 FR 9897 - Gulf of Mexico Fishery Management Council; Public Meetings

Science.gov (United States)

2012-02-21

.... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Special Coral Scientific... Mexico Fishery Management Council; Public Meetings AGENCY: National Marine Fisheries Service (NMFS... Management Council, 2203 N. Lois Avenue, Suite 1100, Tampa, FL 33607. Council address: Gulf of Mexico Fishery...

77 FR 4282 - Gulf of Mexico Fishery Management Council; Public Meeting

Science.gov (United States)

2012-01-27

... meeting. SUMMARY: The Gulf of Mexico Fishery Management Council will convene a meeting of the Shrimp Stock... Laboratory, 4700 Avenue U, Galveston, TX 77551-5997. Council address: Gulf of Mexico Fishery Management... Management Council; telephone: (813) 348-1630. SUPPLEMENTARY INFORMATION: The Shrimp Stock Assessment Review...

Seasonal characteristics of water exchange in Beibu Gulf based on a particle tracking model

Science.gov (United States)

Wang, L.; Pan, W.; Yan, X.

2016-12-01

A lagrangian particle tracking model coupled with a three-dimensional Marine Environmental Committee Ocean Model (MEC) is used to study the transport and seasonal characteristics of water exchange in Beibu Gulf. The hydrodynamic model (MEC), which is forced with the daily surface and lateral boundary fluxes, as well as tidal harmonics and monthly climatological river discharges, is applied to simulate the flow field in the gulf during 2014. Using these results, particle tracking method which includes tidal advection and random walk in the horizontal is used to determine the residence times of sub regions within the gulf in response of winter and summer wind forcing. The result shows water exchange processes in the gulf have a similar tendency with seasonal circulation structure. During the sourthwestly prevailing wind in summer, water particles are traped within the gulf that considerably increases the residence time of each sub region. On the contrary, the presence of strong northeastly prevailing wind in winter drives particles to move cyclonicly leading to shorter residence times and rather active water exchanges among sub regions. Similarly, particle tracking is applied to investigate the water transport in Beibu Gulf. As Qiongzhou Strait and the wide opening in the south of the gulf are two significant channels connecting with the open ocean, continuous particle releases are simulated to quantify the influence range and the pathways of these sources water flowing into Beibu Gulf. The results show that water particles originated from Qiongzhou Strait are moving westward due to the year-round strong westward flow transportation. Influencing range in the north of the Beibu Gulf is enlarged by winter northeastly wind, however, it is blocked to the Leizhou Peninsula coastal region by summer westly wind. In the south opening, water particles are transported northward into the gulf along Hainan Island and flushed from Vietnam coastal region to the ocean rapidly by

Cost-effective reduction of eutrophication in the Gulf of Kalloni (Island of Lesvos, Greece

Directory of Open Access Journals (Sweden)

B. ZANOU

2001-06-01

Full Text Available This study presents a cost-effective analysis by comparing the costs of measures (options to improve the quality of bathing waters in the Gulf of Kalloni (island of Lesvos, Greece in order to reduce the anthropogenic eutrophication in the coastal water of the Kalloni Gulf. The Gulf of Kalloni is a semi-enclosed gulf (115 km2 which receives municipal wastewater, agricultural activity drainage, and at times sewage from olive oil plants processing the local olives harvest. The area of study consists of the coastal waters and the river basin of which water run-off drains into the gulf. Four options are comparable in their environmental effectiveness to reduce eurtophication damages which are: municipal wastewater treatment plant, construction of dams, organic farming plus training and olive oil wastewater treatment plant.

First record of two hard coral species (Faviidae and Siderastreidae from Qeshm Island (Persian Gulf, Iran

Directory of Open Access Journals (Sweden)

MOHAMMAD SHARIF RANJBAR

2010-01-01

Full Text Available Moradi M, Kamrani E, Shokri MR, Ranjbar MS, Hesni MA (2009 First record of two hard coral species (Faviidae and Siderastreidae from Qeshm Island (Persian Gulf, Iran. Nusantara Bioscience 2: 34-37. Two species of hard corals including Cyphastrea chalcidicum (Forskal 1775 (Faviidae and Coscinaraea monile (Forskal 1775 (Siderastreidae were collected from the south of Qeshm Island (Persian Gulf, Iran in the late of 2008. These species were previously reported from southern Persian Gulf, Gulf of Aden, Southeast Africa and Indo-Pacific. The literature review on the distribution of these two species revealed that these species were firstly recorded from the Persian Gulf. These findings further emphasize the high diversity of coral fauna in the Iranian waters of the northern Persian Gulf.

Preliminary observations of environmental damage due to the Gulf War

International Nuclear Information System (INIS)

El-Baz, F.

1992-01-01

Preparing for and conducting the Gulf War resulted in much damage to the environment of the region. The first and most visible effect is related to the damage caused by oil well fires in terms of air pollution as well as the potential damage to the petroleum reservoirs. The second detrimental effect has been caused by the oil spill in the Gulf water. Hundreds of miles of the western coastline of the Gulf are already covered with oil. Petroleum 'mats' have settled on coral reefs and have reduced Gulf water productivity. Foremost among the irreparable damages are changes to the terrain due to the digging of trenches, building walls of soil and otherwise disturbing the desert pavement in and around Kuwait. Disruption of the, usually, one-grain thick layer of pebbles on the desert floor exposes soil to wind action. Changing the contours of the normally flat land increases resistance to the wind and increases the potential of particle transport until the land is peneplained. This condition will increase the frequency and the ferocity of dust storms in the region. It will also result in the formation of new sand dunes; sand drifts already exist along roads in northern Kuwait. It is believed that the detrimental effects on the atmosphere will last for years, on the Gulf water for decades, and on the desert surface for centuries. (author). 12 refs, 1 fig

Preliminary observations of environmental damage due to the Gulf War

Energy Technology Data Exchange (ETDEWEB)

El-Baz, F [Boston Univ., Boston, MA (United States). Center for Remote Sensing

1992-02-01

Preparing for and conducting the Gulf War resulted in much damage to the environment of the region. The first and most visible effect is related to the damage caused by oil well fires in terms of air pollution as well as the potential damage to the petroleum reservoirs. The second detrimental effect has been caused by the oil spill in the Gulf water. Hundreds of miles of the western coastline of the Gulf are already covered with oil. Petroleum 'mats' have settled on coral reefs and have reduced Gulf water productivity. Foremost among the irreparable damages are changes to the terrain due to the digging of trenches, building walls of soil and otherwise disturbing the desert pavement in and around Kuwait. Disruption of the, usually, one-grain thick layer of pebbles on the desert floor exposes soil to wind action. Changing the contours of the normally flat land increases resistance to the wind and increases the potential of particle transport until the land is peneplained. This condition will increase the frequency and the ferocity of dust storms in the region. It will also result in the formation of new sand dunes; sand drifts already exist along roads in northern Kuwait. It is believed that the detrimental effects on the atmosphere will last for years, on the Gulf water for decades, and on the desert surface for centuries. (author). 12 refs, 1 fig.

75 FR 70162 - Presumptive Service Connection for Diseases Associated With Persian Gulf War Service: Functional...

Science.gov (United States)

2010-11-17

... Diseases Associated With Persian Gulf War Service: Functional Gastrointestinal Disorders AGENCY: Department... theater of operations during the Persian Gulf War. DATES: Comments must be received by VA on or before... Service Connection for Diseases Associated With Persian Gulf War Service: Functional Gastrointestinal...

Why is Coastal Community Resilience Important in the Gulf of Mexico Region?

Science.gov (United States)

The Gulf of Mexico Program supports the regional collaborative approach and efforts of the Coastal Community Resilience Priority Issue Team of the Gulf of Mexico Governors’ Alliance and its broad spectrum of partners and stakeholders.

Implication of coastal refineries to the ecology of the Gulf of Kachchh

Digital Repository Service at National Institute of Oceanography (India)

Zingde, M.D.; Anand, N.M.

bank of the Gulf of Kachchh. An assessment of probable impact of establishment of these refineries to the rich biodiversity of the Gulf and suggestions to minimise these impacts have been made in this paper....

76 FR 61695 - Gulf of Mexico Regional Ecosystem Restoration Strategy (Preliminary)

Science.gov (United States)

2011-10-05

... ENVIRONMENTAL PROTECTION AGENCY [EPA-HQ-OA-2011-0798; FRL-9475-6] Gulf of Mexico Regional... of Availability. SUMMARY: This notice announces the availability of the Gulf of Mexico Regional... http://www.regulations.gov in the docket identified by Docket ID No. EPA-HQ-OA-2011-0798. President...

77 FR 59901 - Gulf of Mexico Fishery Management Council; Public Meeting

Science.gov (United States)

2012-10-01

.... SUMMARY: The Gulf of Mexico Fishery Management Council (Council) will convene its Law Enforcement Advisory Panel in conjunction with the Gulf States Marine Fisheries Commission's Law Enforcement Committee. DATES... meeting will be held at the Grand Hotel Marriott Resort, One Grand Boulevard, Point Clear, AL 36564...

Infectious Diseases - Diseases Related to Service in Gulf War, Iraq, and Afghanistan

Science.gov (United States)

... qualify for VA health care . Diseases related to Gulf War, Iraq and Afghanistan service VA presumes that the ... Southwest Asia theater of military operations during the Gulf War August 2, 1990 to present and in Afghanistan ...

75 FR 17755 - Certificate of Alternative Compliance for the Offshore Supply Vessel GULF TIGER

Science.gov (United States)

2010-04-07

... Compliance for the Offshore Supply Vessel GULF TIGER AGENCY: Coast Guard, DHS. ACTION: Notice. SUMMARY: The... vessel GULF TIGER as required by 33 U.S.C. 1605(c) and 33 CFR 81.18. DATES: The Certificate of Alternate... for the h offshore supply vessel GULF TIGER. Full compliance with 72 COLREGS and the Inland Rules Act...

Danish Gulf War Veterans Revisited: No Evidence of Increased Sickness Absence or Reduced Labor Market Outcome After Deployment to the Persian Gulf.

Science.gov (United States)

Nissen, Lars Ravnborg; Stoltenberg, Christian; Nielsen, Anni B Sternhagen; Vedtofte, Mia S; Marott, Jacob L; Gyntelberg, Finn; Guldager, Bernadette

2016-11-01

To examine the assumption that postdeployment incidence of sickness and other absence from work are higher among Gulf War Veterans compared with nonveterans. A prospective registry study including a cohort of 721 Danish Gulf War Veterans and a control cohort of 3,629 nonveterans selected from the general Danish population. Outcome measures were up to 23 years postdeployment incidence of (1) long-term sickness absence and (2) long-term all types of absence from work. Long term with regard to sickness and other absence was defined as exceeding 8 weeks. The association between outcomes and information on deployment history was studied using time-to-event analysis. The index date was the return date from the last deployment to the Gulf. The follow-up period was the time from index date until April 27, 2014. As the main finding, no difference was found between veterans and nonveterans in the incidence rate of long-term sickness absence. After an initial short period (3 months) with elevated incidence rate of long-term absence from work among veterans, there was no difference between the cohorts. Among Danish Gulf War Veterans, no postdeployment increased risk of long-term sickness absence or long-term absence from work was found as compared with nonveterans. Reprint & Copyright © 2016 Association of Military Surgeons of the U.S.

Geothermal Heat Flow in the Gulfs of California and Aden.

Science.gov (United States)

Von Herzen, R P

1963-06-14

Eighteen measurements in and near the gulfs of California and Aden indicate the geothermal flux is several times the world-wide mean of 1.2 x 10(-6) cal/cm(2) sec in both regions. Both gulfs closely coincide with the intersection of oceanic rises with continents and have likely been formed under tensional forces, which suggests an association with mantle convection currents.

75 FR 69921 - Gulf of Mexico Fishery Management Council; Public Meetings

Science.gov (United States)

2010-11-16

..., and the Essential Fish Habitat 5-Year Review Report. The Texas group is part of a three unit Habitat.... SUMMARY: The Gulf of Mexico Fishery Management Council will convene a public meeting of the Texas Habitat... FURTHER INFORMATION CONTACT: Jeff Rester, Habitat Support Specialist, Gulf States Marine Fisheries...

Gulf War

DEFF Research Database (Denmark)

Dalgaard-Nielsen, Anja

2003-01-01

As it became a non‐permanent member of the UN Security Council in January 2003, Germany stepped up its opposition to war with Iraq. The stage was set for a repeat of Germany's uncomfortable position during the 1991 Gulf War. At that time, as most of Germany's allies rallied behind Washington......, Germany made only financial contributions, and hundreds of thousands of Germans took to the streets to protest against the war. Yet, since 1991, Germany had come a long way in its attitudes towards military force. From a policy of complete abstention from military deployments beyond NATO's area (so...

Surface circulation in the Gulf of Cadiz: Model and mean flow structure

Science.gov (United States)

Peliz, Alvaro; Dubert, Jesus; Marchesiello, Patrick; Teles-Machado, Ana

2007-11-01

The mean flow structure of the Gulf of Cadiz is studied using a numerical model. The model consists of a set of one-way nested configurations attaining resolutions on the order of 2.6 km in the region of the Gulf of Cadiz. In the large-scale configuration, the entrainment of the Mediterranean Water is parameterized implicitly through a nudging term. In medium- and small-scale nested configurations, the Mediterranean outflow is introduced explicitly. The model reproduces all the known features of the Azores Current and of the circulation inside the Gulf of Cadiz. A realistic Mediterranean Undercurrent is generated and Meddies develop at proper depths on the southwest tip of the Iberian slope. The hypothesis that the Azores Current may generate in association with the Mediterranean outflow (β-plume theories) is confirmed by the model results. The time-mean flow is dominated by a cyclonic cell generated in the gulf which expands westward and has transports ranging from 4 to 5 Sv. The connection between the cell and the Azores Current is analyzed. At the scale of the Gulf, the time-mean flow cell is composed by the westward Mediterranean Undercurrent, and by a counterflow running eastward over the outer edge of the Mediterranean Undercurrent deeper vein, as the latter is forced downslope. This counterflow feeds the entrainment at the depths of the Mediterranean Undercurrent and the Atlantic inflow at shallower levels. Coastward and upslope of this recirculation cell, a second current running equatorward all the way along the northern part of the gulf is revealed. This current is a very robust model result that promotes continuity between the southwestern Iberian coast and the Strait of Gibraltar, and helps explain many observations and recurrent SST features of the Gulf of Cadiz.

The Red Sea and Gulf of Aden Basins

Science.gov (United States)

Bosworth, William; Huchon, Philippe; McClay, Ken

2005-10-01

We here summarize the evolution of the greater Red Sea-Gulf of Aden rift system, which includes the Gulfs of Suez and Aqaba, the Red Sea and Gulf of Aden marine basins and their continental margins, and the Afar region. Plume related basaltic trap volcanism began in Ethiopia, NE Sudan (Derudeb), and SW Yemen at ˜31 Ma, followed by rhyolitic volcanism at ˜30 Ma. Volcanism thereafter spread northward to Harrats Sirat, Hadan, Ishara-Khirsat, and Ar Rahat in western Saudi Arabia. This early magmatism occurred without significant extension, and continued to ˜25 Ma. Much of the Red Sea and Gulf of Aden region was at or near sea level at this time. Starting between ˜29.9 and 28.7 Ma, marine syn-tectonic sediments were deposited on continental crust in the central Gulf of Aden. At the same time the Horn of Africa became emergent. By ˜27.5-23.8 Ma a small rift basin was forming in the Eritrean Red Sea. At approximately the same time (˜25 Ma), extension and rifting commenced within Afar itself. At ˜24 Ma, a new phase of volcanism, principally basaltic dikes but also layered gabbro and granophyre bodies, appeared nearly synchronously throughout the entire Red Sea, from Afar and Yemen to northern Egypt. This second phase of magmatism was accompanied in the Red Sea by strong rift-normal extension and deposition of syn-tectonic sediments, mostly of marine and marginal marine affinity. Sedimentary facies were laterally heterogeneous, being comprised of inter-fingering siliciclastics, evaporite, and carbonate. Throughout the Red Sea, the principal phase of rift shoulder uplift and rapid syn-rift subsidence followed shortly thereafter at ˜20 Ma. Water depths increased dramatically and sedimentation changed to predominantly Globigerina-rich marl and deepwater limestone. Within a few million years of its initiation in the mid-Oligocene the Gulf of Aden continental rift linked the Owen fracture zone (oceanic crust) with the Afar plume. The principal driving force for extension

Influence of monsoonal winds on chlorophyll-α distribution in the Beibu Gulf.

Directory of Open Access Journals (Sweden)

Chunyan Shen

Full Text Available The influence of seasonal, monsoonal winds on the temporal and spatial variability of chlorophyll-a (chl-a in the Beibu Gulf is studied based on long-term satellite data of sea surface winds, chl-a concentration and sea surface temperature (SST and in-situ observations for the years from 2002 to 2014. The analysis results indicated that under northeasterly monsoonal winds, chl-a concentrations were substantially elevated in most area of the Beibu Gulf, with a high chl-a concentration (>2 mg m-3 patch extending southwestward from the coastal water of the northeastern Gulf, consistent with the winter wind pattern. Meanwhile, the spatial distribution of high chl-a concentration is correlated with low SST in the northeastern Gulf. In the southern Gulf, there was generally low chl-a, except in the coastal waters southwest of Hainan Island. Here, the upwelling cold water prevails outside the mouth of the Beibu Gulf, driven by the southwesterly monsoonal winds and the runoff from the Changhua River, as implied by low observed SST. Correlation analysis indicated the chl-a concentration was strongly modulated by wind speed (r = 0.63, p0.7, p<0.001. Integrated analysis also showed that stratification is weak and mixing is strong in winter as affected by the high wind speed, which suggests that the wind-induced mixing is a dominant mechanism for entrainment of nutrients and the spatial distribution of chl-a in winter.

Gulf Canada's Russian joint venture

International Nuclear Information System (INIS)

Motyka, D.

1992-01-01

After three years of evaluating prospects and negotiating with government and industry representatives, Gulf Canada established its first joint venture in the Russian Federation with Komineft, a production association from the Komi autonomous republic. Komineft has a 50% share of the venture, and the rest is shared equally between Gulf and British Gas. The operating area is at the Vozey and Upper Vozey fields in the Timan-Pechora Basin, some 1,500 km northeast of Moscow just inside the Arctic Circle. An attractive feature of the Upper Vozey project is low development costs of ca $2/bbl. In the Vozey field, the venture will set up an enhanced oil recovery demonstration project to test techniques perfected in Alberta. About 60 Canadians are involved on the project, and headquarters are in Usinsk, ca 100 km south of the oil fields. In the first half of 1992, oil production in the first phase of the venture averaged around 10,000 bbl/d and continues to increase

Environmental emergency in Persian Gulf

International Nuclear Information System (INIS)

Zanini, G.

1991-01-01

This paper gives an environmental damage report for the Kuwait-Persian Gulf area that has been affected by the Gulf War oil well fires and the release of oil into the sea. The report was prepared by members of an ENEA (Italian Commission for New Technologies, Energy and the Environment)/Friends of the Earth scientific mission whose aim was to assess the damage to terrestrial and aquatic ecosystems and to develop short and long terms programs of damage containment and environmental restoration. With regard to shore-line clean-up operations, the mission noted the scarce use of manpower, 500 versus 11,000 for the Exxon Valdez spill. Seventy-five per cent of the surface of Kuwait has been covered with a fine spray of petroleum and ashes borne by turbulent winds. Efforts are being made to establish a climate model, which would take into account the effects of the altered environmental conditions, to forecast the local transport of the pollutants

Alaska, Gulf spills share similarities

International Nuclear Information System (INIS)

Usher, D.

1991-01-01

The accidental Exxon Valdez oil spill in Alaska and the deliberate dumping of crude oil into the Persian Gulf as a tactic of war contain both glaring differences and surprising similarities. Public reaction and public response was much greater to the Exxon Valdez spill in pristine Prince William Sound than to the war-related tragedy in the Persian Gulf. More than 12,000 workers helped in the Alaskan cleanup; only 350 have been involved in Kuwait. But in both instances, environmental damages appear to be less than anticipated. Natures highly effective self-cleansing action is primarily responsible for minimizing the damages. One positive action growing out of the two incidents is increased international cooperation and participation in oil-spill clean-up efforts. In 1990, in the aftermath of the Exxon Valdez spill, 94 nations signed an international accord on cooperation in future spills. The spills can be historic environmental landmarks leading to creation of more sophisticated response systems worldwide

Patterns of Illness and Care Before Deployment to the Persian Gulf War

National Research Council Canada - National Science Library

Miller, Richard

2001-01-01

...) Comprehensive Clinical Evaluation Program (CCEP) upon returning from the Persian Gulf War have patterns of illness and medical care seeking during the year prior to deployment to the Persian Gulf that differ from those of comparison groups of Army...

Patterns of Illness and Care Before Deployment to the Persian Gulf War

National Research Council Canada - National Science Library

Miller, Richard

2002-01-01

...) Comprehensive Clinical Evaluation Program (CCEP) upon returning from the Persian Gulf War have patterns of illness and medical care seeking during the year prior to deployment to the Persian Gulf that differ from those of comparison groups of Army...

Blood Biomarkers of Chronic Inflammation in Gulf War Illness.

Directory of Open Access Journals (Sweden)

Gerhard J Johnson

Full Text Available More than twenty years following the end of the 1990-1991 Gulf War it is estimated that approximately 300,000 veterans of this conflict suffer from an unexplained chronic, multi-system disorder known as Gulf War Illness (GWI. The etiology of GWI may be exposure to chemical toxins, but it remains only partially defined, and its case definition is based only on symptoms. Objective criteria for the diagnosis of GWI are urgently needed for diagnosis and therapeutic research.This study was designed to determine if blood biomarkers could provide objective criteria to assist diagnosis of GWI.A surveillance study of 85 Gulf War Veteran volunteers identified from the Department of Veterans Affairs Minnesota Gulf War registry was performed. All subjects were deployed to the Gulf War. Fifty seven subjects had GWI defined by CDC criteria, and 28 did not have symptomatic criteria for a diagnosis of GWI. Statistical analyses were performed on peripheral blood counts and assays of 61 plasma proteins using the Mann-Whitney rank sum test to compare biomarker distributions and stepwise logistic regression to formulate a diagnostic model.Lymphocyte, monocyte, neutrophil, and platelet counts were higher in GWI subjects. Six serum proteins associated with inflammation were significantly different in GWI subjects. A diagnostic model of three biomarkers-lymphocytes, monocytes, and C reactive protein-had a predicted probability of 90% (CI 76-90% for diagnosing GWI when the probability of having GWI was above 70%.The results of the current study indicate that inflammation is a component of the pathobiology of GWI. Analysis of the data resulted in a model utilizing three readily measurable biomarkers that appears to significantly augment the symptom-based case definition of GWI. These new observations are highly relevant to the diagnosis of GWI, and to therapeutic trials.

Why is Improving Water Quality in the Gulf of Mexico so Critical?

Science.gov (United States)

The EPA regional offices and the Gulf of Mexico Program work with Gulf States to continue to maximize the efficiency and utility of water quality monitoring efforts for local managers by coordinating and standardizing state and federal water quality data

Effectiveness of Acupuncture in the Treatment of Gulf War Illness

Science.gov (United States)

2013-01-01

325. 7 Wigers SH, Stiles TC, Vogael PA. Effects of aerobic exercise versus stress management treatment in fibromyalgia : a 4.5 year prospective study... Treatment of Gulf War Illness PRINCIPAL INVESTIGATOR: Lisa Conboy, M.A., M.S., ScD...December 2012 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER Effectiveness of Acupuncture in the Treatment of Gulf War Illness 5b. GRANT NUMBER W81XWH

The consequences and hazards of depleted uranium weapons used by US army since gulf war

International Nuclear Information System (INIS)

Mao Yongze

1999-01-01

Military equipment and development of depleted uranium weapon in USA, the depleted uranium weapon used in gulf war by USA army, personnel irradiation in the gulf war, and the protection in the gulf war are introduced. The radioactivity, radioactive characteristics, chemical toxicity and hazard of the depleted uranium are also introduced

Heavy metal, trace element and petroleum hydrocarbon pollution in the Arabian Gulf: Review

OpenAIRE

Afnan Mahmood Freije

2015-01-01

The Arabian Gulf environmental status was assessed based on studies conducted in Bahrain, Kuwait, Oman, Saudi Arabia, Qatar, and United Arab Emirates (UAE) during 1983–2011. This review examines all sorts of pollutions in the Arabian Gulf area over the last three decades. Approximately 50 published studies were reviewed in order to determine the pollution status in the Arabian Gulf regarding heavy metals and organic substances. Three types of environmental pollutions including marine and coas...

78 FR 69803 - Drawbridge Operation Regulations; Gulf Intracoastal Waterway, Venice, FL

Science.gov (United States)

2013-11-21

...-AA09 Drawbridge Operation Regulations; Gulf Intracoastal Waterway, Venice, FL AGENCY: Coast Guard, DHS... that governs the Hatchett Creek (US-41) Twin Bridges, Gulf Intracoastal Waterway mile 56.9, Venice, FL... mile 56.9 at Venice, FL as listed in Sec. 117.287(b), provides the draw of the Hatchett Creek (US-41...

Survey to assess Persian Gulf spill effects

International Nuclear Information System (INIS)

Anon.

1992-01-01

This paper reports that an international group is poised for an extensive survey of the Persian Gulf, including an assessment of the long term effects of last year's oil spill, a legacy of the Persian Gulf war. Saudi Arabia plans a $450 million cleanup program on beaches fouled by the massive spill. Plans for the survey were disclosed by the United National Educational, Scientific and Cultural Organization (Unesco). It is to be carried out under the auspices of the Regional Organization for the Protection of the Marine Environment (Ropme), Unesco's Intergovernmental Oceanographic Commission, and the U.S. National Oceanic and Atmospheric Administration. Ropme member countries are Bahrain, Iran, Iraq, Kuwait, Qatar, Saudi Arabia, and the United Arab Emirates

On depleted uranium: gulf war and Balkan syndrome.

Science.gov (United States)

Duraković, A

2001-04-01

The complex clinical symptomatology of chronic illnesses, commonly described as Gulf War Syndrome, remains a poorly understood disease entity with diversified theories of its etiology and pathogenesis. Several causative factors have been postulated, with a particular emphasis on low level chemical warfare agents, oil fires, multiple vaccines, desert sand (Al-Eskan disease), botulism, Aspergillus flavus, Mycoplasma, aflatoxins, and others, contributing to the broad scope of clinical manifestations. Among several hundred thousand veterans deployed in the Operation Desert Storm, 15-20% have reported sick and about 25,000 died. Depleted uranium (DU), a low-level radioactive waste product of the enrichment of natural uranium with U-235 for the reactor fuel or nuclear weapons, has been considered a possible causative agent in the genesis of Gulf War Syndrome. It was used in the Gulf and Balkan wars as an armor-penetrating ammunition. In the operation Desert Storm, over 350 metric tons of DU was used, with an estimate of 3-6 million grams released in the atmosphere. Internal contamination with inhaled DU has been demonstrated by the elevated excretion of uranium isotopes in the urine of the exposed veterans 10 years after the Gulf war and causes concern because of its chemical and radiological toxicity and mutagenic and carcinogenic properties. Polarized views of different interest groups maintain an area of sustained controversy more in the environment of the public media than in the scientific community, partly for the reason of being less than sufficiently addressed by a meaningful objective interdisciplinary research.

Functional composition of Chaetodon butterflyfishes at a peripheral and extreme coral reef location, the Persian Gulf

KAUST Repository

Pratchett, Morgan S.; Hoey, Andrew; Feary, David A.; Bauman, Andrew G.; Burt, John A.; Riegl, Bernhard M.

2013-01-01

composition of butterflyfishes in the Persian Gulf, Musandam Peninsula, and Gulf of Oman. Only five species of butterflyfishes were recorded during this study, and mostly just in the Gulf of Oman. Unlike most locations in the Indo-Pacific where butterflyfish

New observations on Mexiconema cichlasomae (Nematoda: Dracunculoidea) from fishes in Mexico.

Science.gov (United States)

Moravec, F; Jiménez-García, M I; Salgado-Maldonado, G

1998-09-01

The dracunculoid nematode Mexiconema cichlasomae Moravec, Vidal et Salgado Maldonado, 1992, originally described from the abdominal cavity and viscera of Cichlasoma spp. from Mexico, was recorded from the abdominal cavity of the poeciliid Xiphophorus helleri Heckel in Lake Catemaco and its small tributary Arroyo Agrio, Veracruz and from the intestine of the nurse shark Ginglystoma cirratum (Bonnaterre) off the southern coast of the Gulf of Mexico in Campeche; both these findings represent new host records. The nematode specimens from these hosts are briefly described and illustrated. Whereas X. helleri evidently served as the true definitive host of this parasite, G. cirratum probably acquired Mexiconema infection accidentally while feeding on fish definitive hosts in the brackish or salt-water environment. The ability of M. cichlasomae to utilize fishes of different orders (Perciformes and Cyprinodontiformes) as definitive hosts is rather exceptional among dracunculoid nematodes.

Gulf of Mexico Ecosystem Status Report

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The Gulf of Mexico is one of the most ecologically and economically valuable marine ecosystems in the world and is affected by a variety of natural and anthropogenic...

Treating Gulf War Illness with Novel Anti-Inflammatories: A Screening of Botantical Microglia Modulators

Science.gov (United States)

2016-10-01

AWARD NUMBER: W81XWH-14-1-0623 TITLE: Treating Gulf War Illness with Novel Anti-Inflammatories: A Screening of Botantical Microglia Modulators...Report 3. DATES COVERED 30 Sep 2015 - 29 Sep 2016 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER Treating Gulf War Illness with Novel Anti...SUBJECT TERMS Gulf War Illness, botanical, anti-inflammatory, biomarker, microglia, improvement, treatment 16. SECURITY CLASSIFICATION OF: 17

Hydrocarbon distributions in sediments of the open area of the Arabian Gulf following the 1991 Gulf War oil spill

International Nuclear Information System (INIS)

Al-Lihaibi, S.S.; Ghazi, S.J.

1997-01-01

Surface sediments collected from the open area of the Arabian Gulf were analysed for total petroleum hydrocarbons and specific aliphatic hydrocarbon components in order to provide information on the extent of oil contamination and the degree of weathering of the spilled oil following the Gulf War. The surface distribution of the petroleum hydrocarbons showed an increasing trend towards the north-east, and among the individual transects there was a pronounced increasing trend towards the north-west direction. Despite off-shore oil-related activities as well as a potential impact from the 1991 oil spill, the concentrations of petroleum hydrocarbons in the study area were relatively low. This finding may be attributed to the effectiveness of weathering processes. (author)

Numerical modelling of tides and tidal currents in the Gulf of Kutch

Digital Repository Service at National Institute of Oceanography (India)

Unnikrishnan, A.S.

An application of a two-dimensional tidal model to study the tidal regime in the Gulf of Kutch is made. This is with a view to synthesise various information on tides and currents that are available in the Gulf. A comparison of surface elevations...

Oil Reserves and Production in the Gulf with Special Reference to Qatar

International Nuclear Information System (INIS)

Ibrahim, Ismail.

1998-01-01

Oil and natural gas potential of the Gulf Arab Countries is substantial. The proven oil reserves of these countries constitute 55% of total world proven oil reserves. The Gulf Arab Countries possess 576 billion barrels of proven crude oil reserves, as compared to total world proven oil reserves of around 1047. Natural gas resources are also plentiful in the Gulf Arab Countries. Proven natural gas reserves were estimated at around 26 trillion cubic metres, at the beginning of 1997. This figure represents around 17% of total world proven natural gas reserves of around 153 trillion cubic metres

Critical research needs for identifying future changes in Gulf coral reef ecosystems

KAUST Repository

Feary, David A.

2013-07-01

Expert opinion was assessed to identify current knowledge gaps in determining future changes in Arabian/Persian Gulf (thereafter \\'Gulf\\') coral reefs. Thirty-one participants submitted 71 research questions that were peer-assessed in terms of scientific importance (i.e., filled a knowledge gap and was a research priority) and efficiency in resource use (i.e., was highly feasible and ecologically broad). Ten research questions, in six major research areas, were highly important for both understanding Gulf coral reef ecosystems and also an efficient use of limited research resources. These questions mirrored global evaluations of the importance of understanding and evaluating biodiversity, determining the potential impacts of climate change, the role of anthropogenic impacts in structuring coral reef communities, and economically evaluating coral reef communities. These questions provide guidance for future research on coral reef ecosystems within the Gulf, and enhance the potential for assessment and management of future changes in this globally significant region. © 2013 Elsevier Ltd.

Thermocline Regulated Seasonal Evolution of Surface Chlorophyll in the Gulf of Aden

KAUST Repository

Hoteit, Ibrahim

2015-04-01

The Gulf of Aden, although subject to seasonally reversing monsoonal winds, has been previously reported as an oligotrophic basin during summer, with elevated chlorophyll concentrations only occurring during winter due to convective mixing. However, the Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) ocean color data reveal that the Gulf of Aden also exhibits a prominent summer chlorophyll bloom and sustains elevated chlorophyll concentrations throughout the fall, and is a biophysical province distinct from the adjacent Arabian Sea. Climatological hydrographic data suggest that the thermocline, hence the nutricline, in the entire gulf is markedly shoaled by the southwest monsoon during summer and fall. Under this condition, cyclonic eddies in the gulf can effectively pump deep nutrients to the surface layer and lead to the chlorophyll bloom in late summer, and, after the transition to the northeast monsoon in fall, coastal upwelling driven by the northeasterly winds produces a pronounced increase in surface chlorophyll concentrations along the Somali coast.

Thermocline Regulated Seasonal Evolution of Surface Chlorophyll in the Gulf of Aden

KAUST Repository

Yao, Fengchao

2015-03-19

The Gulf of Aden, although subject to seasonally reversing monsoonal winds, has been previously reported as an oligotrophic basin during summer, with elevated chlorophyll concentrations only occurring during winter due to convective mixing. However, the Sea-Viewing Wide Field-of-View Sensor (SeaWiFS) ocean color data reveal that the Gulf of Aden also exhibits a prominent summer chlorophyll bloom and sustains elevated chlorophyll concentrations throughout the fall, and is a biophysical province distinct from the adjacent Arabian Sea. Climatological hydrographic data suggest that the thermocline, hence the nutricline, in the entire gulf is markedly shoaled by the southwest monsoon during summer and fall. Under this condition, cyclonic eddies in the gulf can effectively pump deep nutrients to the surface layer and lead to the chlorophyll bloom in late summer, and, after the transition to the northeast monsoon in fall, coastal upwelling driven by the northeasterly winds produces a pronounced increase in surface chlorophyll concentrations along the Somali coast. © 2015 Yao, Hoteit.

Mangrove diversity in the Serewe Gulf of Lombok Island West Nusa Tenggara

Science.gov (United States)

Irwansah, Sugiyarto, Mahajoeno, Edwi

2017-08-01

Mangrove forests are a valuable economic resource as important breeding grounds and nursery sites for various animal species, stabilizing coastal lands and offering protection against storms, tsunamis, and sea level rise. Mangrove forest growing along the coastline of Serewe Gulf. The Serewe Gulf has great potential in tourism and sea cultivation sector. The research was conducted in the Serewe Gulf of Lombok Island, West Nusa Tenggara for 2 months (November up to December 2016). The objective of this research is to determine the diversity of mangrove in the Serewe Gulf, Lombok Island, West Nusa Tenggara using belt transect method. The identification result shows that there are 9 families with 9 types such as Rhizophoraceae (Rhizophora mucronata), Avicenniaceae (Avicennia officinalis), Sonneratiaceae (Sonneratia alba), Casuarinaceae (Casuarina equisetifolia), Bignoniaceae (Dilochnadrone sthaceae), Malvaceae (Hibiscus tiliaceus), Lythraceae (Pemphis adicula), Aizoaceae (Sesivium portulacastrum), and Euphorbiaceae (Ricinus communis). The diversity of mangrove types in the research area is in medium rate with H' index of 1.668.

Critical research needs for identifying future changes in Gulf coral reef ecosystems

KAUST Repository

Feary, David A.; Burt, John A.; Bauman, Andrew G.; Al Hazeem, Shaker; Abdel-Moati, Mohamed A R; Al-Khalifa, Khalifa A.; Anderson, Donald M.; Amos, Carl L.; Baker, Andrew C.; Bartholomew, Aaron; Bento, Rita; Cavalcante, Geó rgenes H.; Chen, Chaolun Allen; Coles, Steve L.; Dab, Koosha; Fowler, Ashley M.; George, David Glen; Grandcourt, Edwin Mark; Hill, Ross; John, David Michael; Jones, David Alan; Keshavmurthy, Shashank; Mahmoud, Huda M A; Moradi Och Tapeh, Mahdi; Mostafavi, Pargol Ghavam; Naser, Humood A.; Pichon, Michel; Purkis, Sam J.; Riegl, Bernhard M.; Samimi-Namin, Kaveh; Sheppard, Charles R C; Vajed Samiei, Jahangir; Voolstra, Christian R.; Wiedenmann, Jö rg

2013-01-01

Expert opinion was assessed to identify current knowledge gaps in determining future changes in Arabian/Persian Gulf (thereafter 'Gulf') coral reefs. Thirty-one participants submitted 71 research questions that were peer-assessed in terms of scientific importance (i.e., filled a knowledge gap and was a research priority) and efficiency in resource use (i.e., was highly feasible and ecologically broad). Ten research questions, in six major research areas, were highly important for both understanding Gulf coral reef ecosystems and also an efficient use of limited research resources. These questions mirrored global evaluations of the importance of understanding and evaluating biodiversity, determining the potential impacts of climate change, the role of anthropogenic impacts in structuring coral reef communities, and economically evaluating coral reef communities. These questions provide guidance for future research on coral reef ecosystems within the Gulf, and enhance the potential for assessment and management of future changes in this globally significant region. © 2013 Elsevier Ltd.

Anticancer and cytotoxic compounds from seashells of the Persian Gulf

Directory of Open Access Journals (Sweden)

Iraj Nabipour

2009-12-01

Full Text Available Background: Pre-clinical studies for isolation and purification of marine compounds continued at an active pace since the last decade. Today, more than 60% of the anticancer drugs commercially available are of naturally origin thus the sea is a very favorable bed for the discovery of novel anticancer agents. Methods: A total of known 611 seashells species in the Persian Gulf were investigated for synonymy in OBIS database. Then, all the species, including their synonymy were searched in PubMed databse to find their isolated bioactive agents. Results: From 611 known seashells in the Persian Gulf, 172 genera/species had bioactive compounds. Anticancer agents were isolated and purified for 8 genera. These compounds had various structures they were polypeptide, polysaccharide, glycoprotein, alkaloid, cerebroside, and cembranoid which had different mechanism of actions including induction of apoptosis, destroying the skeletal structures of the cells, immune bioactivity and inhibition of topoisomerase I. Spisulosine is the only anticancer agent which is currently under clinical trial. Conclusions: Although, the known seashells from the Persian Gulf have potential anticancer and cytotoxic compounds but a very few investigations had been reported. Further investigations for isolation and purification on bioactive compounds from seashells of the Persian Gulf is recommended.

Shuttles set for US Gulf lift off

Energy Technology Data Exchange (ETDEWEB)

DeLuca, Marshall

2002-09-01

The author reports on discussions with two US companies about plans for using shuttle tankers to transport oil from platforms in the Gulf of Mexico to US ports as an alternative to pipeline networks. This follows approval by the US Minerals Management Service for FPSOs in the Gulf. The companies are American Shuttle Tankers and Conoco-owned Seahorse Shuttling and Technology. Because the vessels will enter US ports and operate in US waters, they must conform with the US Jones Act: they must be US-built, US-flagged and manned by US crews. They must also be double-hulled. This increases cost and reduces market opportunities for the vessels outside the US. The article also considers the use of articulated tug barges as another option. (UK)

Gulf of Mexico forecasts : the dead sea

International Nuclear Information System (INIS)

Good Abbott, C.

1999-01-01

The future gas supply potential from the offshore Gulf of Mexico region was discussed with particular emphasis on the issue of whether there is enough growth potential to satisfy the anticipated growth in power generation markets. In 1980, a forecasted decrease in gas supply proved to be wrong. In fact, supply actually increased and productivity in the Gulf of Mexico has been relatively stable since 1982. A significant growth has been forecasted for 1997 to 2010. This growth will coincide with a large growth in gas demand in the northeastern U.S. The fact that electric power generation is changing hands adds to the opportunities in the northeast. It was emphasized that Canadian supply must be present to compete. 1 tab., 16 figs

Spatial analysis of the etiology of amyotrophic lateral sclerosis among 1991 Gulf War veterans.

Science.gov (United States)

Miranda, Marie Lynn; Alicia Overstreet Galeano, M; Tassone, Eric; Allen, Kelli D; Horner, Ronnie D

2008-11-01

Veterans of the 1991 Gulf War have an increased risk of amyotrophic lateral sclerosis (ALS), but the etiology is unknown. This study sought to identify geographic areas with elevated risk for the later development of ALS among military personnel who served in the first Gulf War. A unified geographic information system (GIS) was constructed to allow analysis of secondary data on troop movements in the 1991 Gulf War theatre in the Persian Gulf region including Iraq, northern Saudi Arabia, and Kuwait. We fit Bayesian Poisson regression models to adjust for potential risk factors, including one relatively discrete environmental exposure, and to identify areas associated with elevated risk of ALS. We found that service in particular locations of the Gulf was associated with an elevated risk for later developing ALS, both before and after adjustment for branch of service and potential of exposure to chemical warfare agents in and around Khamisiyah, Iraq. Specific geographic locations of troop units within the 1991 Gulf War theatre are associated with an increased risk for the subsequent development of ALS among members of those units. The identified spatial locations represent the logical starting points in the search for potential etiologic factors of ALS among Gulf War veterans. Of note, for locations where the relative odds of subsequently developing ALS are among the highest, specific risk factors, whether environmental or occupationally related, have not been identified. The results of spatial models can be used to subsequently look for risk factors that follow the spatial pattern of elevated risk.

Gulf war depleted uranium risks.

Science.gov (United States)

Marshall, Albert C

2008-01-01

US and British forces used depleted uranium (DU) in armor-piercing rounds to disable enemy tanks during the Gulf and Balkan Wars. Uranium particulate is generated by DU shell impact and particulate entrained in air may be inhaled or ingested by troops and nearby civilian populations. As uranium is slightly radioactive and chemically toxic, a number of critics have asserted that DU exposure has resulted in a variety of adverse health effects for exposed veterans and nearby civilian populations. The study described in this paper used mathematical modeling to estimate health risks from exposure to DU during the 1991 Gulf War for both US troops and nearby Iraqi civilians. The analysis found that the risks of DU-induced leukemia or birth defects are far too small to result in an observable increase in these health effects among exposed veterans or Iraqi civilians. The analysis indicated that only a few ( approximately 5) US veterans in vehicles accidentally targeted by US tanks received significant exposure levels, resulting in about a 1.4% lifetime risk of DU radiation-induced fatal cancer (compared with about a 24% risk of a fatal cancer from all other causes). These veterans may have also experienced temporary kidney damage. Iraqi children playing for 500 h in DU-destroyed vehicles are predicted to incur a cancer risk of about 0.4%. In vitro and animal tests suggest the possibility of chemically induced health effects from DU internalization, such as immune system impairment. Further study is needed to determine the applicability of these findings for Gulf War exposure to DU. Veterans and civilians who did not occupy DU-contaminated vehicles are unlikely to have internalized quantities of DU significantly in excess of normal internalization of natural uranium from the environment.

A basis for environmental monitoring in the gulf of Batabano applying hydrodynamic simulations

International Nuclear Information System (INIS)

Arriaza Oliveros, L.; Rodas Fernandez, L.; Simanca Cardenas, J.; Milian Lorenz, D.E.; Romero Suarez, P.L.

2006-01-01

The spreading of organic compounds and wastes in seawater depend on the space-time distribution of marine currents. Therefore, for the Environmental Monitoring of sea waters in the Cuban shelf it is necessary to include the marine current variable. A hydrodynamic model is applied in the Gulf of Batabano. The model was validated by using marine currents observed. Any organic compound or wastes in the Batabano or La Broa will moved slowly (1 + - 0.0529 cm/s and 4.7 + - 0.0529 cm/s) until the center and southwestern part of the gulf and the western part of the Isla de la Juventud, affecting for a long time period the SW coast of the gulf. Any pollution in ocean waters adjacent to this shelf will go through the open boundary with a mean velocity between 15 + - 0.25 cm/s and 29.5 + - 0.25 cm/s until the northern part of the Isla de la Juventud; it affects quickly this island and the southwestern and southeastern coasts of the gulf; the pollution will go slowly (1 + - 0.0529 cm/s and 3 + - 0.0529 cm/s) until the central and northeastern part of the gulf

Assessing aquifer storage and recovery feasibility in the Gulf Coastal Plains of Texas

Directory of Open Access Journals (Sweden)

W. Benjamin Smith

2017-12-01

Full Text Available Study region: The Gulf Coast and Carrizo-Wilcox aquifer systems in the Gulf Coastal Plains of Texas. Study focus: Aquifer storage and recovery is a water storage alternative that is underutilized in Texas, a state with both long periods of drought and high intensity storms. Future water storage plans in Texas almost exclusively rely on surface reservoirs, subject to high evaporative losses. This study seeks to identify sites where aquifer storage and recovery (ASR may be successful, especially in recovery of injected waters, by analyzing publicly-available hydrogeologic data. Transmissivity, hydraulic gradient, well density, depth to aquifer, and depth to groundwater are used in a GIS-based index to determine feasibility of implementing an ASR system in the Gulf Coast and Carrizo-Wilcox aquifer systems. New hydrological insights for the region: Large regions of the central and northern Gulf Coast and the central and southern Carrizo-Wilcox aquifer systems are expected to be hydrologically feasible regions for ASR. Corpus Christi, Victoria, San Antonio, Bryan, and College Station are identified as possible cities where ASR would be a useful water storage strategy. Keywords: Aquifer storage and recovery (ASR, GIS, Gulf coast, Carrizo-Wilcox, Managed aquifer recharge (MAR

Baseline concentrations of strontium and 90Sr in seawater from the northern Gulf

International Nuclear Information System (INIS)

Uddin, S.; Al Ghadban, A.N.; Behbahani, M.

2013-01-01

Highlights: • This is the first baseline for strontium and 90 Sr from northern Gulf. • The total strontium concentration is much higher than reported for other oceans. • The Sr/salinity ratio correlates well with global averages. • High Sr might be due to increased salinity/CaCo 3 dissolution in acidifying Gulf waters. -- Abstract: Baseline concentration of strontium and Sr-90 in Gulf is presented. The strontium concentration is much higher than reported for other oceanic waters, while the Sr-90 concentration is low at 0.7–1.0 mBq l −1 , that represents the background level following nuclear tests and can be used as an effective tracer in case of any radioactive release in the region. The strontium concentration is primarily related to the increasing salinity off the Gulf coast

Simulated Impacts of Juvenile Mortality on Gulf of Mexico Sturgeon Populations

Directory of Open Access Journals (Sweden)

William B. Tate

2002-01-01

Full Text Available We used an age-structured computer model to assess the impact of changes in juvenile mortality on the Gulf of Mexico sturgeon population in the Suwannee River, Florida. We simulated population trends under four levels of annual juvenile mortality (20, 25, 30, and 35%. As the rate of mortality increased, population size decreased, and rates of population growth shifted from positive to negative. Our models indicated that juvenile survival is important to the success of gulf sturgeon populations, and mortality estimates are needed to predict population viability. We suggest that life history studies in estuaries should be conducted, and bycatch rates for commercial fisheries should be quantified to aid in the management and conservation of gulf sturgeon.

Gulf of Aqaba Field Trip - Datasets

KAUST Repository

Hanafy, Sherif M.; Jonsson, Sigurjon; Klinger, Yann

2013-01-01

and 2D resistivity imaging to locate the fault. One seismic profile and one 2D resistivity profile are collected at an alluvial fan on the Gulf of Aqaba coast in Saudi Arabia. The collected data are inverted to generate the traveltime tomogram

The United States and the Arab Gulf Monarchies; Les Etats-Unis et les monarchie arabes du Golfe

Energy Technology Data Exchange (ETDEWEB)

Kechichian, J A

1999-07-01

The United States has enduring strategic interests in the Persian Gulf region. To understand these interests and the Usa policy towards the Arab Gulf Monarchies, the french institute of international relations (IFRI) proposes this document. The following chapters are detailed: the United States and the Arab Gulf Monarchies, overview, Chief Unites States Objective: Access to oil, re-evaluating United States Foreign Policy in the Gulf, the second term (Usa strategy). (A.L.B.)

Sediment concentration and bed form structures of Gulf of Cambay from remote sensing

Digital Repository Service at National Institute of Oceanography (India)

Kunte, P.D.

period, the bottom currents pull sediment (sand) particles supplied by major and minor rivers, rolling along the Gulf bed. These sediments perhaps participate in the formation of bed form structures. The topography of the Gulf bottom comprises of numerous...

Sea Snake Harvest in the Gulf of Thailand

DEFF Research Database (Denmark)

Van Cao, Nguyen; Thien Tao, Nguyen; Moore, Amelia

2014-01-01

Abstract: Conservation of sea snakes is virtually nonexistent in Asia, and its role in human–snake interactions in terms of catch, trade, and snakebites as an occupational hazard is mostly unexplored. We collected data on sea snake landings from the Gulf of Thailand, a hotspot for sea snake harvest...... years), and the treatment of sea snake bites with rhinoceros horn. Emerging markets in Southeast Asia drive the harvest of venomous sea snakes in the Gulf of Thailand and sea snake bites present a potentially lethal occupational hazard. We call for implementation of monitoring programs to further...... address the conservation implications of this large-scale marine reptile exploitation....

Seasonal Composite Chlorophyll Concentrations - Gulf of Maine

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — This personal geodatabase contains raster images of chlorophyll concentrations in the Gulf of Maine. These raster images are seasonal composites, and were calculated...

Gulf of Mexico Nutrient, carbon, CTD data

Data.gov (United States)

U.S. Environmental Protection Agency — Gulf of Mexico cruise, nearshore and CTD data collected by the USEPA during 2002 - 2008. This dataset is associated with the following publications: Pauer , J., T....

Monthly Composite Chlorophyll Concentrations - Gulf of Maine

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — This personal geodatabase contains raster images of chlorophyll concentrations in the Gulf of Maine. These raster images are monthly composites, and were calculated...

2013 Gulf of Mexico SPCE angler survey

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — This survey provides economic data related to marine recreational fishing in the Gulf of Mexico. The data collected include preference and opinion information...

Gulf gas - tomorrow's nest-egg

International Nuclear Information System (INIS)

Roberts, J.

1993-01-01

The Persian Gulf remains the world's largest crude oil reservoir but it also contains some of the world's biggest gas reserves and for much of the 1990s the countries that grew rich on the oil booms of the 1970s and 1980s will be seeking to develop their gas resources as well as their oilfields. (author)

Gulf Coast climate change adaptation pilot study.

Science.gov (United States)

2013-08-01

Climate change-related issues place substantial operating and financial burdens on public transit agencies, particularly in coastal settings. Gulf of Mexico coastal transit agencies and their constituents are especially vulnerable to natural hazards ...

My service in the Gulf War

International Nuclear Information System (INIS)

Losicki, M.

1991-01-01

During the Gulf War author, as a member of Polish Medical Mission, worked in the Saudi Military Hospital in the King Khalid Military Centre. An article describes radiologist service on a conventional contemporary war, as well as 3 cases of medical treatment. 5 figs

Development of Dietary Polyphenol Preparations for Treating Veterans with Gulf War Illness

Science.gov (United States)

2016-10-01

research study because you are a Gulf War Veteran who was deployed to the Persian Gulf between August 1990 and August 1991 and you fit the definition of...Friday, April 01, 2016 3:16 PM To: Pasinetti, Giulio Cc: Grants; King , Michael; Bennett, Jodi H CIV USARMY MEDCOM USAMRMC (US); Dubner, Lauren; Winter

Sex in the Suwannee, the secretive love life of Gulf Sturgeons

Science.gov (United States)

Sulak, Kenneth J.

2014-01-01

Mid-February in the Gulf of Mexico and a timeless ritual is about to repeat itself for perhaps the millionth time. Some mysterious signal, possibly increasing day length, flips an internal switch, feeding stops, and the homeward migration begins for the Gulf Sturgeon (Acipenser oxyrinchus desotoi). From far flung places along the Gulf Coast, Gulf Sturgeons start heading back to their natal rivers – they know the way instinctively. Maybe they seek out the special chemical taste of their home river, imprinted at hatching. Or perhaps the ultrasensitive electric organs decorating the underside of the snout can follow the map of the earth’s magnetic field. Either way, time to make a beeline for the welcoming waters of the Suwannee River, or maybe the Apalachicola, Choctawhatchee, or one of four other spawning rivers. Some of the adults are on a special mission – time to spawn, time to perpetuate the species. Mature males form the first wave in this homebound marathon, eager to get to the spawning grounds, eager to be the first to greet ready females with a series of sharp clicking sounds. Only spawning once each three years, females laden with large black eggs demure, taking their time, arriving in mid to late March, a month behind the early males. But most sturgeons, juveniles and immature adults not ready to spawn, are simply heading home. Not prompted by the spawning urge, they are just following the ancient annual cycle of intense winter feeding in the Gulf, followed by several months of fasting and R&R in the river.

Gulf Atlantic Coastal Plain Long Term Agroecosystem Research site, Tifton, GA

Science.gov (United States)

Timothy Strickland; David D. Bosch; Dinku M. Endale; Thomas L. Potter

2016-01-01

The Gulf-Atlantic Coastal Plain (GACP) physiographic region is an important agricultural production area within the southeastern U.S. that extends from Delaware in the Northeast to the Gulf Coast of Texas. The region consists mainly of low-elevation flat to rolling terrain with numerous streams, abundant rainfall, a complex coastline, and many wetlands. The GACP Long ...

Central Gulf of Alaska Rockfish Permit Program

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The North Pacific Fishery Management Council adopted the Central Gulf of Alaska Rockfish Program (Rockfish Program) on June 14, 2010, to replace the expiring Pilot...

Gulf sturgeon Critical Habitat Units 1-7

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — These data represent the critical habitat for Gulf Sturgeon as designated by Federal Register Vol. 68, No. 53, Wednesday, March 19, 2003, Rules and Regulations.

The Postwar Hospitalization Experience of Gulf War Veterans Participating in U.S. Health Registries

National Research Council Canada - National Science Library

Smith, Tyler C; Jimenez, Dinice L; Smith, Besa; Gray, Gregory C; Hooper, Tomoko I

2004-01-01

Although the US military experienced relatively low combat casualty rates during the Gulf War there has been concern that exposures occurring during the war may have resulted in postwar morbidity among Gulf War veterans...

77 FR 32962 - Gulf Coast LNG Export, LLC; Application for Long-Term Authorization To Export Domestically...

Science.gov (United States)

2012-06-04

... supply domestic demand for a century, even with significant exports of LNG. Gulf Coast contends that the... is not prohibited by U.S. law or policy. Gulf Coast seeks to export this LNG on its own behalf and...-going carrier, and with which trade is not prohibited by U.S. law or policy. In the alternative, Gulf...

Anomalously High Recruitment of the 2010 Gulf Menhaden (Brevoortia patronus) Year Class: Evidence of Indirect Effects from the Deepwater Horizon Blowout in the Gulf of Mexico.

Science.gov (United States)

Short, Jeffrey W; Geiger, Harold J; Haney, J Christopher; Voss, Christine M; Vozzo, Maria L; Guillory, Vincent; Peterson, Charles H

2017-07-01

Gulf menhaden (Brevoortia patronus) exhibited unprecedented juvenile recruitment in 2010 during the year of the Deepwater Horizon well blowout, exceeding the prior 39-year mean by more than four standard deviations near the Mississippi River. Abundance of that cohort remained exceptionally high for two subsequent years as recruits moved into older age classes. Such changes in this dominant forage fish population can be most parsimoniously explained as consequences of release from predation. Contact with crude oil induced high mortality of piscivorous seabirds, bottlenose dolphin (Tursiops truncatus), waders, and other fish-eating marsh birds, all of which are substantial consumers of Gulf menhaden. Diversions of fresh water from the Mississippi River to protect coastal marshes from oiling depressed salinities, impairing access to juvenile Gulf menhaden by aquatic predators that avoid low-salinity estuarine waters. These releases from predation led to an increase of Gulf menhaden biomass in 2011 to 2.4 million t, or more than twice the average biomass of 1.1 million t for the decade prior to 2010. Biomass increases of this magnitude in a major forage fish species suggest additional trophically linked effects at the population-, trophic-level and ecosystem scales, reflecting an heretofore little appreciated indirect effect that may be associated with major oil spills in highly productive marine waters.

Residence time of pollutants discharged in the Gulf of Kachchh, northwestern Arabian Sea

Digital Repository Service at National Institute of Oceanography (India)

Patgaonkar, R.S.; Vethamony, P.; Lokesh, K.S.; Babu, M.T.

A 2D Hydrodynamic-Particle Analysis model was applied to the Gulf of Kachchh (GoK) to estimate the residence time of pollutants. The tidal currents in the Gulf have a strong E-W component, which prevents the material in the north being transported...

77 FR 60319 - Harbor Porpoise Take Reduction Plan; Coastal Gulf of Maine Closure Area Established With a...

Science.gov (United States)

2012-10-03

...-XC099 Harbor Porpoise Take Reduction Plan; Coastal Gulf of Maine Closure Area Established With a... Atmospheric Administration (NOAA), Commerce. ACTION: Establishment of the Coastal Gulf of Maine Closure Area... Service (NMFS) announces the establishment of the Coastal Gulf of Maine Closure Area under the Harbor...

Simulation of oil pollution in the Persian Gulf near Assaluyeh oil terminal

International Nuclear Information System (INIS)

Faghihifard, M.; Badri, M.A.

2016-01-01

Numerical simulation of oil slick movement with respect to tidal factors and wind effects was performed in order to counteract oil pollution in the Persian Gulf. First, a flow model was invoked with respect to water level fluctuations. The main tidal constituents were applied to the model using the initial conditions of water level variations in the Hormuz Strait near the Hangam Island. The movement of oil pollution was determined due to wind, tide and temperature effects and confirmed by applying a verified field results. Simulations were focused near an important terminal in the Persian Gulf, Assaluyeh Port. The results were led to preparing a risk-taking map in a parallel research for the Persian Gulf.

Spatial and temporal genetic homogeneity of the Monterey Spanish mackerel, Scomberomorus concolor, in the Gulf of California

Directory of Open Access Journals (Sweden)

Erika Magallón-Gayón

2016-10-01

Full Text Available The genetic homogeneity of the Monterey Spanish mackerel Scomberomorus concolor population in the Gulf of California was confirmed using nine nuclear microsatellite loci in combination with mitochondrial cytochrome b gene sequences. Samples were collected from the upper and central Gulf areas, representing the two main biogeographical regions of the Gulf. The analyses support the existence of a single panmictic population of S. concolor inhabiting the Gulf of California which in terms of fishery management represents a single genetic stock. Additionally, the contemporary effective population size estimated for the S. concolor population (Ne = 3056.9 was high and similar to another pelagic species. The gene flow seems to be bidirectional between the upper and central Gulf, which coincides with the seasonal movements between both regions related to spawning and feeding activities. A population expansion event was detected, which agrees with a colonization-expansion hypothesis of the S. concolor population in the Gulf.

Snow bands over the Gulf of Finland in wintertime

Directory of Open Access Journals (Sweden)

Jordi Mazon

2015-01-01

Full Text Available Large shore-parallel, quasi-stationary snow bands are occasionally observed over the Gulf of Finland during wintertime when the sea is not frozen. On the basis of Weather Research and Forecasting mesoscale model experiments and radar observations of snow bands formed in January 2006 and February 2012, we show that their dynamics share common characteristics: (1 the sea gulf that produces the known lake effect, (2 cold easterly large-scale flow along the gulf and (3 a cold local flow from the two near and opposite coastlines of Estonia and Finland in the form of two land-breeze cells which collide offshore. The associated fronts, which have strong rising motions, are maintained by the convergence of the land-breeze cells. In addition to these factors, the concave shape of the coast in the eastern part of the Gulf of Finland promotes offshore convergence and the formation of several secondary bands of precipitation that are adjacent to the eastern part of the main band. When the easterlies turn to southerlies, horizontal convective rolls appear over the sea. The Estonian land breeze is enhanced while the cold air remains stagnant inland over the Finnish coast, acting as an orographic barrier lifting the marine air mass upwards. Consequently, a line of convective precipitation composed of several cells is formed along the Finnish coast. In both events, the simulations also show two low-level jets generated by the combined effects of the land-breeze cells and baroclinicity over the coast of Finland and Estonia.

Cities within Cities: An Urbanization Approach in the Gulf Countries

OpenAIRE

Bamakhrama, Salim Salah

2015-01-01

Within Dubai, nineteen out of the original 112 mega-projects carried the word city in their names, a phenomenon that is common in Gulf cities such as Dubai, Riyadh and Abu Dhabi. To further explore this phenomenon, this thesis focuses on three aspects that affect the dynamic relationship between the primary city and the cities within cities (sub-cities) in the Gulf region with special emphasis on Dubai. First, the naming problem of the sub-city illustrates why the tension between competing id...

Application of spatial models to the stopover ecology of trans-Gulf migrants

Science.gov (United States)

Theodore R. Simons; Scott M. Pearson; Frank R. Moore

2000-01-01

Studies at migratory stopover sites along the northern coast of the Gulf of Mexico are providing an understanding of how weather, habitat, and energetic factors combine to shape the stopover ecology of trans-Gulf migrants. We are coupling this understanding with analyses of landscape-level patterns of habitat availability by using spatially explicit models to simulate...

Coastal circulation and hydrography in the Gulf of Tehuantepec, Mexico, during winter

Science.gov (United States)

Barton, E. D.; Lavín, M. F.; Trasviña, A.

2009-02-01

Winter observations of shelf and slope hydrography and currents in the inner Gulf of Tehuantepec are analysed from two field studies in 1989 and 1996 to specify the variability of near-shore conditions under varying wind stress. During the winter period frequent outbursts of 'Norte' winds over the central Gulf result in persistent alongshore inflows along both its eastern and western coasts. Wind-induced variability on time scales of several days strongly influences the shelf currents, but has greater effect on its western coast because of the generation and separation of anticyclonic eddies there. The steadier inflow (˜0.2 m s -1) on the eastern shelf is evident in a strong down-bowing of shallow isosurfaces towards the coast within 100 km of shore, below a wedge of warmer, fresher and lighter water. This persistent entry of less saline (33.4-34.0), warmer water from the southeast clearly originates in buoyancy input by rivers along the Central American coast, but is augmented by a general shoreward tendency (0.2 m s -1) in the southeastern Gulf. The resultant shallow tongue of anomalous water is generally swept offshore in the head of the Gulf and mixed away by the strong outflow and vertical overturning of the frequent 'Norte' events but during wind relaxations the warm, low-salinity coastal flow may briefly extend further west. In the head of the Gulf, flow is predominantly offshore (depression, respectively, of the pycnocline against the shore. More saline, open ocean water is introduced from the north-western side of the Gulf by the inflow along the west coast. During extended wind relaxations, the flow becomes predominantly eastward beyond the shelf while nearshore the coastally trapped buoyant inflow from the southeast penetrates across the entire head of the gulf at least as far as its western limit. On the basis of these and other recent observations, it seems that the accepted view of a broad, persistent Costa Rica Coastal Current (CRCC) is the result

77 FR 60967 - Fisheries of the Gulf of Mexico; Southeast Data, Assessment and Review (SEDAR); Public Meeting

Science.gov (United States)

2012-10-05

...: Notice of SEDAR 28 Gulf of Mexico Spanish mackerel and cobia assessment webinars. SUMMARY: The SEDAR 28 assessment of the Gulf of Mexico Spanish mackerel and cobia fisheries will consist of a series of workshops... modeling methodologies for the Gulf of Mexico Spanish mackerel and cobia fisheries. Special Accommodations...

Sea surface temperature and Ekman transport in the Persian Gulf

Directory of Open Access Journals (Sweden)

E. H.

2002-12-01

Full Text Available   The wind drift motion of the water which is produced by the stress of the wind exerted upon the surface of the ocean is described by Ekmans theory (1905. Using the mean monthly values for the wind stress and SST, seasonal Ekman transport for the Persian Gulf was computed and contoured. The geostrophic winds have combined with the SST to estimate the effect of cooling due to Ekman transport of colder northern waters and inflow from the Oman Sea. The monthly SST mainly obtained from the 10 10 grided data of Levitus atlas and Hormuz Cruis Experiment for 1997.   Analyses show a NW to SE Ekman transport due to wind stress and significant interannual variability of SST on sea surface in the Persian Gulf. The seasonal variation of SST shows a continental pattern due to severe interaction between the land and sea. But these variations somehow moderates because of Ekman transport in Persian Gulf.

Southeast Gulf of Mexico Sperm Whale Study

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Large vessel surveys were conducted during the summers of 2012 and 2014 in the southeastern Gulf of Mexico north of the Dry Tortugas. Data were collected on the...

The GCC States of the Persian Gulf and Asia Energy Relations

International Nuclear Information System (INIS)

Kellner, Thierry

2012-01-01

Since the 2000's, China's and India's needs for hydrocarbons, coming on top of those of older industrialized Asian countries (Japan and South Korea), have considerably strengthened customer-supplier links between Asia in general and the Persian Gulf, in the energy field. The Asian market plays a major economic role for countries of the Gulf Cooperation Council (GCC). As a group, they export three and a half times as much to the Japanese, Korean, Indian and Chinese markets than to the European Union (EU27) and the United States combined (Euro 203 billion compared to Euro 58 billion, in 2010). Despite the growing economic importance of Asia to the GCC countries, the Gulf monarchies still have a clear interest in their relations with their traditional Western partners, especially in terms of investments and technologies. It is in their interests to maintain strong economic links with Europe and the OECD countries in general. In the future, Asian hydrocarbon consuming countries as a whole - as indeed the EU and the USA - will have an interest in the stability and security of the Persian Gulf. Yet a certain degree of rivalry between them may well express itself (for example, between India and China)

Tiered on-the-ground implementation projects for Gulf of Mexico water quality improvements

Science.gov (United States)

Both the Gulf Hypoxia Action Plan for Reducing, Mitigating, and Controlling Hypoxia in the Northern Gulf of Mexico and Improving Water Quality in the Mississippi River Basin (USEPA 2008) and the GOMA Governors’ Action Plan II for Healthy and Resilient Coasts (GOMA 2009) call for the development and ...

Increased Postdeployment Use of Medication for Common Mental Disorders in Danish Gulf War Veterans

DEFF Research Database (Denmark)

Nissen, Lars Ravnborg; Stoltenberg, Christian Ditlev Gabriel; Vedtofte, Mia Sadowa

2017-01-01

BACKGROUND: Gulf War veterans (GWVs) have an elevated risk of reporting symptoms of mental disorders as compared with nondeployed military controls. A difficulty in the Gulf War health research is that most health outcomes are self-reported; therefore, it is highly relevant to study objective....../hypnotic medication, and (3) number of postdeployment psychiatric contacts. The association between outcomes and GWVs status was studied by using time-to-event analysis. The index date was the return date from the last deployment to the Gulf. The follow-up period was the time from index date until December 31, 2014...... and anxiolytic or hypnotic medicine among GWVs compared with NVs were rather surprising since we recently, by using the same study population, found that deployment to the Persian Gulf was not associated with increased sickness absence or reduced labor market attachment. However, our results indicate...

Detección de cambios en la morfología litoral de Punta Zacatal y parte occidental de lsla del Carmen, Campeche, mediante el análisis multitemporal de imágenes de satélite

Directory of Open Access Journals (Sweden)

A. Gerardo Palacio Aponte

2001-06-01

Full Text Available During the last 25 years, significant geomorphological changes have been detected in the coastline of Punta Zacatal and the western region of Isla del Carmen, Campeche, as consequence of the current littoral dynamics and the influence of urban and industrial development. In order to detect such changes, a color overlay and composition image analysis was carried out using three Lancisat MSS satellite images dated 1974, 1986 and 1992. A near-infrared band (0.8-1.1,?m was applied to each primary color: assigning color to high-reflectance values showing changes in land distribution, and absence of color to water bodies and land that remained unchanged. The color presence/absence relationship for each image allowed to detect coastal accretion, erosion and stable areas in a false-color composite. Afterwards a supervised classification was conducted to obtain areas and percentages, which were verified by means of multi-temporal photointerpretation and GPS fieldwork validation.

Severe accident sequences simulated at the Grand Gulf Nuclear Station

International Nuclear Information System (INIS)

Carbajo, J.J.

1999-01-01

Different severe accident sequences employing the MELCOR code, version 1.8.4 QK, have been simulated at the Grand Gulf Nuclear Station (Grand Gulf). The postulated severe accidents simulated are two low-pressure, short-term, station blackouts; two unmitigated small-break (SB) loss-of-coolant accidents (LOCAs) (SBLOCAs); and one unmitigated large LOCA (LLOCA). The purpose of this study was to calculate best-estimate timings of events and source terms for a wide range of severe accidents and to compare the plant response to these accidents

Determination of 137Cs and 60Co pollution in the area of the Laguna Verde Nuclear Power Plant, Mexico.

Science.gov (United States)

Salas Mar, Bernardo

2015-11-01

The project 'Radiological Analysis of Environmental Samples in the Gulf of Mexico and the coast of Quintana Roo', had the aim of identifying and quantifying anthropogenic radionuclides in environmental samples consisting of silt, sand and sea water. This paper presents the results of the radiological analysis of these samples, which was made in the multichannel system for gamma spectrometry with hyperpure germanium detector in the Laboratory of Radiological Analysis of Environmental Samples, located at the Physics Department, Faculty of Sciences, of the Autonomous National University of Mexico (UNAM). The sampled points are along the coast of the contiguous states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatan and Quintana Roo. This paper presents the qualitative and quantitative concentrations of the main identified anthropogenic radionuclides (60)Co and (137)Cs. © The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

Challenges facing the financing of oil production capacity in the Gulf

International Nuclear Information System (INIS)

Abi-Aad, Naji.

1995-01-01

The estimates of the required capital for maintaining and expanding oil production capacity in the 'Big Five' producers in the Gulf (Iran, Iraq, Kuwait, Saudi Arabia and the United Emirates) are large numbers. In fact, looking at the total cost of raising the Gulf oil production capacity from 18.5 million b/d in 1990 to 26.8 million b/d in the year 2005, the eventual sum is likely to end up at around $192 billion (1990 $) of which about $150 billion will be required as normal investment to maintain current output levels, and a further $42 billion will be necessary to develop new capacities. In short, the Gulf countries will need to spend an average of $12-13 billion per year to maintain current production and to raise some 8.3 million b/d of new capacity by 2005. (author)

Risk management strategy for initiating nuclear desalination in the Gulf Cooperation Council (GCC)

International Nuclear Information System (INIS)

Hakami, Saeed

2009-01-01

Full text:The Gulf countries are one of the most water short regions in the world, classified from the arid and semiarid regions. The average precipitation received is 100 mm/year which indicate very limited renewable water resources per capita and per hectare of irrigated land. The water resources in gulf countries not only continued under pressure, but also it drought from other factors such as increasing population and water demand for irrigation and industrial use. Furthermore, Rain is considered the only source of recharging the ground water in the gulf countries and its fall depends upon the storms that occur irregularly in respect of quantity or distribution year-round. While the countries of the Gulf region have the capacity to rapidly expand their economic growth and gross domestic product (GDP). Also, one may observe that their growth rate is very high. For solving their limitation to use fresh water and to develop and sustain their economy and development, they need to nuclear desalinations. Risk management strategy helps to reduce issues in initiating nuclear desalination plants. There are vast theories, strategies and tools that have discussed in regards to risk management strategy in the nuclear desalinations. However, this paper chiefly provides and introduces a new risk management methodology in the Gulf countries This methodology helps to highlight the critical factors and their consequences at nuclear desalinations. This paper is intended to reduce risks in using nuclear desalinations and increase opportunities. Also, the objectives of this paper are how to plan and initiate nuclear desalination plants in Gulf Countries. Consequently, the new methodology helps their sustainable water industry.

77 FR 28569 - Foreign-Trade Zone 92-Gulfport, MS Notification of Proposed Production Activity; Gulf Ship, LLC...

Science.gov (United States)

2012-05-15

... DEPARTMENT OF COMMERCE Foreign-Trade Zones Board [B-36-2012] Foreign-Trade Zone 92--Gulfport, MS Notification of Proposed Production Activity; Gulf Ship, LLC, (Shipbuilding), Gulfport, MS The Mississippi Coast Foreign-Trade Zone, Inc., grantee of FTZ 92, submitted a notification of proposed production activity on behalf of Gulf Ship, LLC (Gulf...

76 FR 38673 - Environmental Documents Prepared for Proposed Oil, Gas, and Mineral Operations by the Gulf of...

Science.gov (United States)

2011-07-01

... the Survey, SEA M10-008. Gulf of Mexico. Coastal Technology Corporation, Located on the Atlantic 2/1.... Planning Areas of the Gulf of Mexico. Energy Resource Technology GOM, Matagorda Island, Block 2/3/2011 Inc... Environmental Documents Prepared for Proposed Oil, Gas, and Mineral Operations by the Gulf of Mexico Outer...

77 FR 50388 - Coastal Migratory Pelagic Resources of the Gulf of Mexico and South Atlantic; 2012-2013...

Science.gov (United States)

2012-08-21

... Brownsville, Texas) and continues to the boundary between the eastern and western zones at 87[deg]31.1[min] W... Atlantic; 2012-2013 Accountability Measure and Closure for Gulf King Mackerel in Western Zone AGENCY... king mackerel in the western zone of the Gulf of Mexico (Gulf) exclusive economic zone (EEZ) through...

78 FR 58248 - Coastal Migratory Pelagic Resources of the Gulf of Mexico and South Atlantic; 2013-2014...

Science.gov (United States)

2013-09-23

... between the eastern and western zones at 87[deg]31.1' W. long., which is a line directly south from the... Atlantic; 2013-2014 Accountability Measure and Closure for Gulf King Mackerel in Western Zone AGENCY... king mackerel in the western zone of the Gulf of Mexico (Gulf) exclusive economic zone (EEZ) through...

Prospects for the Growth and Influence of the Gulf Cooperation Council

Science.gov (United States)

1983-10-01

DARSP-supported Middle East study on "The Future of Islamic Fundemental ism in the Arab World in the 1980’s," and find them very helpful. We rfill...for Arab Economic Development (1974) Arab Investment Company (1974) Sa’udi Development Fund (1974) Gulf International Bank (1974) Gulf Arab...marketing. 3. The institution of joint policies to allocate investments at home and pursue financial interests world wide. 4. The coordination of

Trial of Naltrexone and Dextromethorphan for Gulf War Veterans’ Illnesses

Science.gov (United States)

2014-07-01

09-2-0065 TITLE: Trial of Naltrexone and Dextromethorphan for Gulf War Veterans Illnesses PRINCIPAL INVESTIGATOR: William J. Meggs, MD, PhD... Dextromethorphan and Naltrexone for Gulf War Veterens’ Illness 5a. CONTRACT NUMBER 5b. GRANT NUMBER W81XWH-09-2-0065 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR...neuron-inflammation, which can be down regulated, by Naltrexone and Dextromethorphan . This is untested but potentially ground breaking concept that

78 FR 40435 - Proposed Information Collection; Comment Request; Gulf of Alaska Trawl Fishery, Rationalization...

Science.gov (United States)

2013-07-05

... Collection; Comment Request; Gulf of Alaska Trawl Fishery, Rationalization Sociocultural Study AGENCY... management actions requiring equivalent information. Fisheries rationalization programs have an impact on... the implementation of a new, yet to be defined, rationalization program for the Gulf of Alaska trawl...

Gulf of Mexico dissolved oxygen model (GoMDOM) research and quality assurance project plan

Science.gov (United States)

An integrated high resolution mathematical modeling framework is being developed that will link hydrodynamic, atmospheric, and water quality models for the northern Gulf of Mexico. This Research and Quality Assurance Project Plan primarily focuses on the deterministic Gulf of Me...

Fishery potential of the Gulf of Kachchh

Digital Repository Service at National Institute of Oceanography (India)

Nair, V.R.; Govindan, K.; Ramaiah, Neelam; Gajbhiye, S.N

/h) was three times more productive than the creek (av. 2.3 kg/h). The number of species found in the Gulf and creek were respectively 34 and 20 suggesting good biodiversity of the living resources of the area....

77 FR 21955 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2012-04-12

... stock, and that the ABC may be increased. The stock, however, is still overfished and under a rebuilding plan through 2032. The next SEDAR benchmark stock assessment currently scheduled for Gulf red snapper...

The outer Gulf of Mexico

Energy Technology Data Exchange (ETDEWEB)

Henery, D. [Shell Internationale Petroleum Maatschappij BV, Den Haag (Netherlands)

1996-12-31

This paper deals with the offshore activity in the Gulf of Mexico. Up to the end of 1995 there have been close to 300 exploratory wells drilled in water depths beyond 450 metres, and over 50 development wells. In addition approximately 1.500 leases have been awarded in the deep water. Themes discussed are deep water discoveries, average well rates, and key learnings points

Gulf of Mexico: Dealing with Change in a Marginal Sea

Science.gov (United States)

Rabalais, N. N.

2017-12-01

The Gulf of Mexico is shared by the United States, Mexico and Cuba and requires collaborative work for integrated management to conserve its natural assets and derived benefits, as well as to foster the overall regional economic wealth. Many rivers drain into the Gulf, most notably the Mississippi, which ranks among global rivers 4th in discharge, 7th in sediment load and 3rd in drainage area, and accounts for about 90 percent of the freshwater inflow to the Gulf. The Mississippi River proper empties onto a narrow ( 20 km wide) continental shelf, and its tributary, the Atchafalaya River, that carries about one third of the total flow discharges onto the broad ( 200 km) and shallow part of the shelf. The entrainment of the Mississippi River discharge into the Louisiana Coastal Current results in the semblance of an extended estuary across much of the inner to mid continental shelf for much of the year. The nitrogen load from the Mississippi River to the adjacent continental shelf over the last half century has increased by 300 per cent. As a result, eutrophication and hypoxia have developed in this stratified coastal system with implications for biogeochemical cycles and valued resources. While there is recognition that over half of the nitrogen sources come from agricultural practices widespread across the watershed, the environmental goal of bringing a 32-year average 13,800 square kilometers of bottom-water hypoxia to less than 5,000 square kilometers is being realized through voluntary and incentive-based activities, designed within a series of subbasin and state strategies. Some activities funded by the US Department of Agriculture for directed nutrient reduction projects and several small-scale voluntary actions towards sustainable and ecologically sound agriculture show promise, but large-scale social-political solutions do not exist now nor will they for the forseeable future. The coastal waters adjacent to the Mississippi River are just one of many such

Trial of Naltrexone and Dextromethorphan for Gulf War Veterans’ Illness

Science.gov (United States)

2015-07-01

1 Award Number: W81XWH-09-2-0065 TITLE: Trial of Naltrexone and Dextromethorphan for Gulf War Veterans’ Illness PRINCIPAL INVESTIGATOR: William J... Dextromethorphan for Gulf War Veterans’ Illness 5a. CONTRACT NUMBER W81XWH-09-2-0065 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) William...is related to low grade neuron-inflammation, which can be down regulated, by Naltrexone and Dextromethorphan . This is untested but potentially

Health Status of Gulf War and Era Veterans Serving in the US Military in 2000.

Science.gov (United States)

Porter, Ben; Long, Kyna; Rull, Rudolph P; Dursa, Erin K

2018-05-01

This research describes Gulf War and era veterans enrolled in the Millennium Cohort Study, who were sampled from US military personnel serving in 2000, and compares health characteristics of this sample to a Department of Veterans Affairs study sampled from the complete population. Demographics characteristics of this sample were described. Self-reported health characteristics were compared between the two studies. Gulf War and era veterans in the Millennium Cohort were generally healthier than in the VA study; they had fewer medical conditions and mental health disorders and better self-reported health. In both studies, Gulf War veterans had poorer health outcomes than era veterans. The Millennium Cohort Study is a unique resource for examining the long-term health effects of Gulf War deployment, particularly comparing deployed and nondeployed personnel and examining illnesses with long latencies.

Dolphins in a Scaled-Down Mediterranean: The Gulf of Corinth's Odontocetes.

Science.gov (United States)

Bearzi, G; Bonizzoni, S; Santostasi, N L; Furey, N B; Eddy, L; Valavanis, V D; Gimenez, O

The Gulf of Corinth is a 2400-km 2 semi-enclosed inland system (a mediterraneus) in central Greece. Its continental shelf areas, steep bottom relief, and waters up to 500-900m deep offer suitable habitat to neritic and pelagic species. We used photographic capture-recapture, distribution modelling, and direct observations to investigate the abundance, status, habitat preferences, movements, and group size of four odontocete species regularly observed in the Gulf, based on five years (2011-2015) of survey effort from small boats. Striped dolphins (Stenella coeruleoalba) are more abundant (1324 individuals, 95%CI 1158-1515) than was determined from previous estimates. Striped dolphins appear to be confined to the Gulf, where they favour deep and oligotrophic waters, and were encountered in single-species and mixed-species groups. Short-beaked common dolphins (Delphinus delphis) (22 individuals, 95%CI 16-31), individuals with intermediate pigmentation (possibly striped/common dolphin hybrids) (55, 95%CI 36-83), and a single Risso's dolphin (Grampus griseus) were only encountered in mixed-species groups with striped dolphins. Short-beaked common dolphins constitute a discrete conservation unit (subpopulation), and based on the current estimate, would qualify as Critically Endangered according to International Union for the Conservation of Nature (IUCN) Red List criteria. Common bottlenose dolphins (Tursiops truncatus) (39 animals, 95%CI 33-47) occur in single-species groups; they prefer continental shelf waters and areas near fish farms in the northern sector, and several animals appear to move into and out of the Gulf. Additionally, we contribute records of marine fauna and an assessment of the fishing fleet operating in the Gulf. Our study shows that the importance of this vulnerable marine environment has been underestimated, and management action must be taken to mitigate human impact and ensure long-term protection. © 2016 Elsevier Ltd All rights reserved.

CURRENT DIRECTION, SALINITY - SURFACE WATER and other data from DRIFTING PLATFORM in the Gulf of Mexico and Coastal Waters of Gulf of Mexico from 1992-08-13 to 1995-08-05 (NODC Accession 9600132)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The water depth and temperature data were collected in Gulf of Mexico as part of Louisiana-Texas (LATEX part C Lousiana and Texas: LaTex) Gulf of Mexico Eddy...

77 FR 51771 - Fisheries of the Gulf of Mexico and South Atlantic; Southeast Data, Assessment, and Review (SEDAR...

Science.gov (United States)

2012-08-27

... Process Webinar for Gulf of Mexico and South Atlantic Spanish Mackerel and Cobia AGENCY: National Marine... of SEDAR 28 Gulf of Mexico and South Atlantic Spanish mackerel and cobia assessment webinar. SUMMARY: The SEDAR 28 assessment of the Gulf of Mexico and South Atlantic Spanish mackerel and cobia fisheries...

Caracterización de ranchos ganaderos de Campeche, México. Resultados de proyectos de transferencia de tecnologías

Directory of Open Access Journals (Sweden)

Aslam Díaz Castillo

2014-01-01

Full Text Available Se caracterizaron 24 ranchos ganaderos de Campeche, México. Se evaluó la transferencia de tecnologías en proyectos de producción de leche, carne bovina y pastos, durante 2012. Predominaron los propietarios con educación primaria (33.33%. El 55.40% del área tenía pastos cultivados y el 0.41% forrajes para la época poco lluviosa. El 8.33% fabricaban alimentos. El 50% tenía cerco eléctrico, con 1.28 unidades de ganado mayor. hectárea-1. Las vacas representaron el 64.01% de las hembras; las novillas de 2 años al parto, el 18.12%; del nacimiento al año, el 12.80%, y de 1-2 años, el 5.07%. En el hato predominaron: el Cebú (33.33% y Suizo pardo (29.17%, y en los sementales Mestizos de Holstein (25% y Beef master (20%, con 35 reproductoras. semental-1. Se utilizaron 4 de las 8 vacunas recomendadas en el estado. La mortalidad anual en crías fue del 10.23%. El 66.67% de los productores tenían registros de salud, 41.67% de movimiento del hato, 33.33% de reproducción, 25% de producción y 8.33% de economía. Se capacitaron 2,487 productores y se establecieron 10 ranchos tecnológicos demostrativos. Se logró el uso de controles técnicos, cerco eléctrico y alimentos elaborados en todos los ranchos. Se plantaron 54 hectáreas de Pennistum purpureum variedad cultivar Cuba CT-115, 15.50 hectáreas de Cuba OM-22 y 0.50 hectáreas de Cuba CT-169. Se incrementó la producción láctea en 60,000 litros de enero-agosto, respecto a igual período de 2011; y alcanzó 1 kilogramo. animal-1. día-1 en 2 ciclos sucesivos de ceba en estabulación, en ranchos de productores líderes.

Economic vulnerability to sea-level rise along the northern U.S. Gulf Coast

Science.gov (United States)

Thatcher, Cindy A.; Brock, John C.; Pendleton, Elizabeth A.

2013-01-01

The northern Gulf of Mexico coast of the United States has been identified as highly vulnerable to sea-level rise, based on a combination of physical and societal factors. Vulnerability of human populations and infrastructure to projected increases in sea level is a critical area of uncertainty for communities in the extremely low-lying and flat northern gulf coastal zone. A rapidly growing population along some parts of the northern Gulf of Mexico coastline is further increasing the potential societal and economic impacts of projected sea-level rise in the region, where observed relative rise rates range from 0.75 to 9.95 mm per year on the Gulf coasts of Texas, Louisiana, Mississippi, Alabama, and Florida. A 1-m elevation threshold was chosen as an inclusive designation of the coastal zone vulnerable to relative sea-level rise, because of uncertainty associated with sea-level rise projections. This study applies a Coastal Economic Vulnerability Index (CEVI) to the northern Gulf of Mexico region, which includes both physical and economic factors that contribute to societal risk of impacts from rising sea level. The economic variables incorporated in the CEVI include human population, urban land cover, economic value of key types of infrastructure, and residential and commercial building values. The variables are standardized and combined to produce a quantitative index value for each 1-km coastal segment, highlighting areas where human populations and the built environment are most at risk. This information can be used by coastal managers as they allocate limited resources for ecosystem restoration, beach nourishment, and coastal-protection infrastructure. The study indicates a large amount of variability in index values along the northern Gulf of Mexico coastline, and highlights areas where long-term planning to enhance resiliency is particularly needed.

PROPIEDADES QUÍMICAS DE UN LUVISOL DESPUÉS DE LA CONVERSIÓN DEL BOSQUE A LA AGRICULTURA EN CAMPECHE, MÉXICO

Directory of Open Access Journals (Sweden)

Juan Medina-M\\u00E9ndez

2009-01-01

Full Text Available El objetivo de este trabajo fue evaluar los cambios en las propiedades químicas de un suelo Luvisol en Campeche, México en un período de 30 años (1974 al 2003. Los principales cultivos en el área de estudio fueron el maíz bajo temporal y mango bajo riego. Con fines de comparación también se consideró como punto de referencia al suelo con vegetación natural de selva. En el maíz, se observaron disminuciones con el tiempo en el pH, conductividad eléctrica, materia orgánica y calcio intercambiable; ocurrió todo lo contrario en el mango. En el maíz, el fósforo, potasio, sodio, hierro y cobre presentaron una tendencia a disminuir, pero posteriormente se incrementaron a un valor superior al que presentó el suelo de vegetación natural; mientras que en el mango, este comportamiento solo se observó en el cobre, hierro y zinc. Los cationes intercambiables, calcio, potasio, magnesio y sodio, al igual que el manganeso, presentaron valores inferiores en los huertos de mango 30 años de edad, comparados con el suelo de vegetación natural. En el maíz, el fósforo, magnesio, potasio, hierro, manganeso, cobre y zinc, presentaron un valor superior al del suelo con vegetación natural, en el estrato de uno a cinco años, relacionado con el desmonte del terreno, la "quema" de la vegetación y la labranza; pero a excepción del zinc, el valor alcanzado por éstos disminuyó a partir de los siguientes cinco años.

Gulf of Mexico Regional Climatology (NCEI Accession 0123320)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The Gulf of Mexico Regional Climatology is a set of objectively analyzed climatological fields of temperature, salinity, oxygen, phosphate, silicate, and nitrate at...

Lower Cretaceous Source Rock and its Implication for the Gulf of Guinea Petroleum System

International Nuclear Information System (INIS)

Frost, B.R.; Griffith, R.C.

2002-01-01

Current petroleum system models for the Gulf of Guinea propose Tertiary-age deltaic organic material as the principal source for the hydrocarbons found there. Although previous workers recognized numerous difficulties and inconsistencies, no alternative model has been resented to adequately explain the complete petroleum system. We propose that the principal source rock for the Gulf of Guinea system occurs in upper lower Cretaceous-age shales at the rift-drift transition. Tertiary loading and the consequent maturation of this lower Cretaceous source rock can explain the controls on tap formation, reservoir distribution and hydrocarbon types found in the Gulf of Guinea

Pollutants from the Gulf War serve as water mass tracer in the Arabian Sea

Science.gov (United States)

Plähn, Olaf; Rhein, Monika; Fine, Rana A.; Sullivan, Kevin F.

In 1995, concentrations of the chlorofluorocarbon compound CFC-12 in the outflow water from the Persian Gulf were 8-40 fold higher than normally caused by air-sea gas exchange. At that time, the anomaly was restricted to the Gulf of Oman north of 20°N, while in 1998 the signal had spread southwestward to 12°N. The sources of this CFC-12 input of about 6400 kg are most likely the fire extinguishers and solvents used during and after the Gulf War in 1991. This CFC-12 signal is a new feature of the Persian Gulf Water (PGW) which can be used to track and quantify the spreading and dilution of PGW in the northern Indian Ocean. The contaminated PGW spreads southward with a mean velocity of 0.02-0.025 m s-1. At 20°N, the anomaly is diluted by a factor of more than two, and east of the island Socotra by a factor of four. A mean transport of less than 0.5·106 m³ s-1 is calculated for PGW assuming a mean dilution rate of 30% from the source signal in the Gulf of Oman to the western Arabian Sea.

Trends in marine debris in the U.S. Caribbean and the Gulf of Mexico, 1996-2003

Science.gov (United States)

Ribic, Christine; Seba B. Sheavly,; Rugg, David J.

2011-01-01

Marine debris is a widespread and globally recognized problem. Sound information is necessary to understand the extent of the problem and to inform resource managers and policy makers about potential mitigation strategies. Although there are many short-term studies on marine debris, a longer-term perspective and the ability to compare among regions has heretofore been missing in the U.S. Caribbean and the Gulf of Mexico. We used data from a national beach monitoring program to evaluate and compare amounts, composition, and trends of indicator marine debris in the U.S. Caribbean (Puerto Rico and the U.S. Virgin Islands) and the Gulf of Mexico from 1996 to 2003. Indicator items provided a standardized set that all surveys collected; each was assigned a probable source: ocean-based, land-based, or general-source. Probable ocean-based debris was related to activities such as recreational boating/fishing, commercial fishing and activities on oil/gas platforms. Probable land-based debris was related to land-based recreation and sewer systems. General-source debris represented plastic items that can come from either ocean- or land-based sources; these items were plastic bags, strapping bands, and plastic bottles (excluding motor oil containers). Debris loads were similar between the U.S. Caribbean and the western Gulf of Mexico; however, debris composition on U.S. Caribbean beaches was dominated by land-based indicators while the western Gulf of Mexico was dominated by ocean-based indicators. Beaches along the eastern Gulf of Mexico had the lowest counts of debris; composition was dominated by land-based indicators, similar to that found for the U.S. Caribbean. Debris loads on beaches in the Gulf of Mexico are likely affected by Gulf circulation patterns, reducing loads in the eastern Gulf and increasing loads in the western Gulf. Over the seven years of monitoring, we found a large linear decrease in total indicator debris, as well as all source categories, for the U

Deepwater Gulf of Mexico: high prospects

International Nuclear Information System (INIS)

Kirkland, G.

2000-01-01

The present and future role of the deepwater Gulf of Mexico to meeting natural gas requirements of the United States are reviewed.The steady increase in U.S. demand, outpacing U.S.supply for over 10 years and the increasing reliance by the USA on Canadian exports is demonstrated in conjunction with the '30 Tcf Challenge'. Regarding the Gulf of Mexico specifically, it is estimated that to meet expectations, production there needs to grow to 22 Bcfpd by 2020, especially the deepwater pools which have a potential of 80 to 140 Tcf over the next 50 years. These pools already produce as much oil as the shelf region, but only 25 per cent as much gas. To produce the expected 7 to 12 Bcfpd oil production must reach 4 million barrel of oil per day, which involves cycle time, new technologies and cost challenges. Much of the new technology needed is related to cutting costs and while good progress is being made, it is argued that further gains could occur if international technology were applied in the Gulf. The rate of success in exploration has also improved, with over one billion barrels of deepwater discoveries per year over the last four years. Cycle times have also improved, although the impact of cycle time in the deeper water regions is cause for some concern. The overall assessment is that to get the gas, one has to get the oil first, meaning that deepwater success is more dependent on oil prices than on gas prices. Nevertheless, the need for developing and applying new technologies remains paramount, including the application of existing foreign technologies that have proven successful elsewhere. It is equally important to demonstrate a high level of environmental stewardship, and to continue focusing on cycle time, including access to prospective acreage, a well-trained workforce, and reasonable regulatory and permitting requirements

Futuristic isotope hydrology in the Gulf region

Science.gov (United States)

Saravana Kumar, U.; Hadi, Khaled

2018-03-01

The Gulf region is one of the most water-stressed parts in the world. Water in the region is very scarce, shortage of supply and lacking of renewable water resources, while the demand for water is growing day by day. It is thus essential to implement modern approaches and technologies in addressing water-related issues. In this context, isotope hydrology will provide invaluable aid. Some of the most important areas of futuristic applications of isotope hydrology include evaluation of aquifer recharge, storage and their recovery system, understanding of dynamic changes due to long-term exploitation of the groundwater, development and management of shared groundwater aquifers, fresh groundwater discharge along the Arabian Gulf, identification and quantification of hydrocarbon contamination in groundwater; soil moisture and solute movement in unsaturated zone, paleoclimate reconstruction, etc. Literature survey suggests, in general, not many isotope studies on the above have been reported.

Geomorphology of the Southern Gulf of California Seafloor

Science.gov (United States)

Eakins, B. W.; Lonsdale, P. F.; Fletcher, J. M.; Ledesma, J. V.

2004-12-01

A Spring 2004 multibeam sonar survey defined the seafloor geomorphology of the southern part of Gulf of California and the intersection of the East Pacific Rise with the North American continent. Survey goals included mapping structural patterns formed during the rifting that opened the Gulf and identifying the spatial transition from continental rifting to seafloor spreading. Multibeam sonar imagery, augmented with archival data and a subaerial DEM of Mexico, illuminates the principal features of this boundary zone between obliquely diverging plates: (i) active and inactive oceanic risecrests within young oceanic basins that are rich in evidence for off-axis magmatic eruption and intrusion; (ii) transforms with pull-apart basins and transpressive ridges along shearing continental margins and within oceanic crust; (iii) orphaned blocks of continental crust detached from sheared and rifted continental margins; and (iv) young, still-extending continental margins dissected by submarine canyons that in many cases are deeply drowned river valleys. Many of the canyons are conduits for turbidity currents that feed deep-sea fans on oceanic and subsided continental crust, and channel sediment to spreading axes, thereby modifying the crustal accretion process. We present a series of detailed bathymetric and seafloor reflectivity maps of this MARGINS Rupturing Continental Lithosphere focus site illustrating geomorphologic features of the southern part of the Gulf, from Guaymas Basin to the Maria Magdalena Rise.

77 FR 34405 - Environmental Documents Prepared for Oil, Gas, and Mineral Operations by the Gulf of Mexico Outer...

Science.gov (United States)

2012-06-11

... Geophysical Survey, SEA M09- Planning Area of the 013. Gulf of Mexico. Energy Resource Technology GOM, South... Oil, Gas, and Mineral Operations by the Gulf of Mexico Outer Continental Shelf (OCS) Region AGENCY... documents prepared for OCS mineral proposals by the Gulf of Mexico OCS Region SUMMARY: BOEM, in accordance...

Gulf of Mexico killer whale photo-ID catalog

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Photo-identification data on killer whales occupying the northern Gulf of Mexico have been collected in association with large vessel surveys since 1991. Photographs...

A medieval port at Ghogha in the Gulf of Khambhat, west coast of India

Digital Repository Service at National Institute of Oceanography (India)

Gaur, A

The Gulf of Khambhat has been a focal area for the human settlements since the Harappan and it is also famous for the highest tidal range in India. The author of the Periplus of the Erythrenean Sea vividly described the sites of the Gulf of Khambhat...

Seasonal levels of the Vibrio predator Bacteriovorax in Atlantic, Pacific and Gulf Coast Seawater

Science.gov (United States)

Bacteriovorax were quantified in US Atlantic, Gulf and Pacific seawater to determine baseline levels of these predatory bacteria and possible seasonal fluctuations in levels. Surface seawater was analyzed monthly for 1 year from Kailua-Kona, Hawaii; the Gulf Coast of Alabama; and four sites along t...

76 FR 35409 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fisheries of the Gulf of...

Science.gov (United States)

2011-06-17

... Atlantic States AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric..., red drum, coastal migratory pelagics, stone crab, and lobsters in the Gulf, and snapper-grouper, coastal migratory pelagics, dolphin and wahoo, and lobsters in the South Atlantic. The EFP exempts...

78 FR 64888 - Coastal Migratory Pelagic Resources of the Gulf of Mexico and South Atlantic; Reopening of the...

Science.gov (United States)

2013-10-30

... the boundary between the eastern and western zones at 87[deg]31.1' W. long., which is a line directly... Atlantic; Reopening of the Commercial Harvest of Gulf King Mackerel in Western Zone AGENCY: National Marine... western zone of the Gulf of Mexico (Gulf) exclusive economic zone (EEZ). NMFS previously projected that...

78 FR 66945 - Proposed Collection; 60-Day Comment request: Gulf Long-Term Follow-Up Study (GuLF STUDY)

Science.gov (United States)

2013-11-07

... GuLF STUDY is to investigate potential short- and long-term health effects associated with oil spill... non-Cleanup Workers Supplemental Mental Health 4,600 4 15/60 4,600 1,533 Telephone Questionnaire... DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health Proposed Collection; 60-Day...

Gulf of Mexico sperm whale photo-ID catalog

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Photo-identification data on sperm whales occupying the north central Gulf of Mexico have been collected during vessel surveys. Photographs of sperm whales are taken...

Urbanization in contemporary Arab Gulf states.

Science.gov (United States)

Qutub, I Y

1983-01-01

Urbanization in the Arab Gulf states of Bahrain, Kuwait, Oman, Qatar, and the United Arab Emirates is analyzed. Topics discussed include the historical background to urbanization; current demographic trends in the region; urban characteristics and growth; socioeconomic factors influencing urbanization, with an emphasis on labor force structure; future urban strategy; and the need for urban research.

GRIIDC: A Data Repository for Gulf of Mexico Science

Science.gov (United States)

Ellis, S.; Gibeaut, J. C.

2017-12-01

The Gulf of Mexico Research Initiative Information & Data Cooperative (GRIIDC) system is a data management solution appropriate for any researcher sharing Gulf of Mexico and oil spill science data. Our mission is to ensure a data and information legacy that promotes continual scientific discovery and public awareness of the Gulf of Mexico ecosystem. GRIIDC developed an open-source software solution to manage data from the Gulf of Mexico Research Initiative (GoMRI). The GoMRI program has over 2500 researchers from diverse fields of study with a variety of attitudes, experiences, and capacities for data sharing. The success of this solution is apparent through new partnerships to share data generated by RESTORE Act Centers of Excellence Programs, the National Academies of Science, and others. The GRIIDC data management system integrates dataset management planning, metadata creation, persistent identification, and data discoverability into an easy-to-use web application. No specialized software or program installations are required to support dataset submission or discovery. Furthermore, no data transformations are needed to submit data to GRIIDC; common file formats such as Excel, csv, and text are all acceptable for submissions. To ensure data are properly documented using the GRIIDC implementation of the ISO 19115-2 metadata standard, researchers submit detailed descriptive information through a series of interactive forms and no knowledge of metadata or xml formats are required. Once a dataset is documented and submitted the GRIIDC team performs a review of the dataset package. This review ensures that files can be opened and contain data, and that data are completely and accurately described. This review does not include performing quality assurance or control of data points, as GRIIDC expects scientists to perform these steps during the course of their work. Once approved, data are made public and searchable through the GRIIDC data discovery portal and the Data

Hydro- and morphodynamic tsunami simulations for the Ambrakian Gulf (Greece) and comparison with geoscientific field traces

Science.gov (United States)

Röbke, B. R.; Schüttrumpf, H.; Vött, A.

2018-04-01

In order to derive local tsunami risks for a particular coast, hydro- and morphodynamic numerical models that are calibrated and compared with sedimentary field data of past tsunami impacts have proven very effective. While this approach has widely been used with regard to recent tsunami events, comparable investigations into pre-/historical tsunami impacts hardly exist, which is the objective of this study focusing on the Ambrakian Gulf in northwestern Greece. The Ambrakian Gulf is located in the most active seismotectonic and by this most tsunamigenic area of the Mediterranean. Accordingly, palaeotsunami field studies have revealed repeated tsunami impacts on the gulf during the past 8000 yr. The current study analyses 151 vibracores of the Ambrakian Gulf coast in order to evaluate tsunami signals in the sedimentary record. Based on a hydro- and morphodynamic numerical model of the study area, various tsunami waves are simulated with the aim of finding scenarios that compare favourably with tsunami deposits detected in the field. Both, field data and simulation results suggest a decreasing tsunami influence from the western to the eastern Ambrakian Gulf. Various scenarios are needed to explain tsunami deposits in different parts of the gulf. Whereas shorter period tsunami waves (T = 30 min) from the south and west compare favourably with field data in the western gulf, longer period waves (T = 80 min) from a western direction show the best agreement with tsunami sediments detected in southwestern Aktio Headland and in the more central parts of the Ambrakian Gulf including Lake Voulkaria. Tsunamis from the southwest generally do not accord with field traces. Besides the spatial sediment distribution, the numerical model accurately reflects the sedimentary composition of the detected event deposits and reproduces a number of essential features typical of tsunamites, which were also observed in the field. Such include fining- and thinning-landward and the marine

Two-way multi-band optical/IR transmisson measurement in the Persian Gulf-coastal region

NARCIS (Netherlands)

Jong, A.N. de; Fritz, P.J.

2005-01-01

The atmospheric conditions in the Persian Gulf region are significantly different from other places in the world. The particle size distribution may vary daily and during the day. The aerosols can contribute to the amount of rainfall over land, important for the nations around the Gulf. In 2004

Oil and gas, strategic regional cooperation between Persian Gulf countries

Energy Technology Data Exchange (ETDEWEB)

Zalloi, Mir Mahdi

2010-09-15

Almost two-thirds of proven oil and a third of world natural gas resources are in the Persian Gulf countries. Unfortunately strategic region of Persian Gulf in the past three decades faced with many security challenges due to wars and political conflicts. For security in this region, there are several methods such as military treaties between regional countries or Military presence of foreign countries, but historical evidence has shown, none of them could not guarantee the stable security in this region. The regional cooperation between countries can be replaced to mentioned methods. IPI Gas pipeline is an objective sample for this regional cooperation.

Nutrients distribution and trophic status assessment in the northern Beibu Gulf, China

Science.gov (United States)

Lai, Junxiang; Jiang, Fajun; Ke, Ke; Xu, Mingben; Lei, Fu; Chen, Bo

2014-09-01

Using historical and 2010 field data, the distribution of nutrients in the northern Beibu Gulf of China is described. There was a decreasing trend in the concentration of nutrients from the north coast to offshore waters of the northern Beibu Gulf, reflecting the influence of inputs from land-based sources. High concentrations of dissolved inorganic nitrogen (DIN) and phosphate (PO4-P) occurred mainly at Fangchenggang Bay, Qinzhou Bay, and Lianzhou Bay. Four different methods were used to assess eutrophication. The trophic status of the Beibu Gulf was characterized using the single factor, Eutrophication index (EI), Trophic index (TRIX) and Assessment of Estuarine Trophic Status (ASSETS) methods. Based on nutrient concentrations, 73.9% of DIN and 26.7% of PO4-P samples exceeded the fourth grade Seawater Quality Standard of China. Eutrophication index values varied widely, but higher levels of eutrophication were generally found in bays and estuaries. TRIX values ranged from 2.61 to 7.27, with an average of 4.98, indicating a mesotrophic and moderately productive system. A positive correlation between TRIX and harmful algal species richness and abundance was observed. The ASSETS model evaluates eutrophication status based on a Pressure-State-Response approach, including three main indices: influencing factors, overall eutrophic condition, and future outlook. The Beibu Gulf was graded as moderate using ASSETS. The single factor and Chinese nutrient index methods were considered inadequate for the assessment of trophic status. TRIX can be used as an indicator of trophic state and ASSETS showed good potential to assess eutrophication. The results of TRIX and ASSETS depend on threshold values. To establish these values, further research is required within the northern Beibu Gulf.

Subinertial response of the Gulf Stream System to Hurricane Fran of 1996

Science.gov (United States)

Xie, Lian; Pietrafesa, Leonard J.; Zhang, Chen

The evidence of subinertial-frequency (with periods from 2 days to 2 weeks) oceanic response to Hurricane Fran of 1996 is documented. Hurricane Fran traveled northward across the Gulf Stream and then over a cool-core trough, known as the Charleston Trough, due east of Charleston, SC and in the lee of the Charleston Bump during the period 4-5 September, 1996. During the passage of the storm, the trough closed into a gyre to form an intense cool-core cyclonic eddy. This cool-core eddy had an initial size of approximately 130 km by 170 km and drifted northeastward along the Gulf Stream front at a speed of 13 to 15 km/day as a subinertial baroclinic wave. Superimposed on this subinertial-frequency wave were near-inertial frequency, internal inertia-gravity waves formed in the stratified mixed-layer base after the passage of the storm. The results from a three-dimensional numerical ocean model confirm the existence of both near-inertial and subinertial-frequency waves in the Gulf Stream system during and after the passage of Hurricane Fran. Model results also showed that hurricane-forced oceanic response can modify Gulf Stream variability at both near-inertial and subinertial frequencies.

Temporal variation of 228Ra in the near-surface Gulf of Mexico

International Nuclear Information System (INIS)

Reid, F.D.; Moore, W.S.; Sackett, W.M.

1979-01-01

The Mn-fiber technique for extracting radium from seawater has proved useful for studying the marine geochemistry of 228 Ra. In the Gulf of Mexico, this technique was used to measure the surface and near-surface distribution of 226 Ra and 228 Ra. The observed surface distribution of 228 Ra, and particularly the radium activity ratio (228/226) can be explained by known circulation patterns, or, when local surface currents are not well understood, may provide insight into their general characteristics. The radium activity ratio has increased from 0.5 in 1968 to 0.7 in 1973 in the surface Gulf of Mexico. This observed increase cannot be attributed to known anthropogenic or natural source perturbations within the Caribbean Sea-Gulf of Mexico system. Possible causes include a change in the residence time for near-surface water, or variations in the relative dominance of the two eastern Caribbean; the North Equatorial Current and the Guiana Current. The temporal distribution of 228 Ra is unstable and naturally variable over a time period less than or equal to five years in the Gulf of Mexico and by extrapolation, the Caribbean Sea. Therefore, its usefulness in calculations of eddy diffusion coefficients for these regions is greatly diminished. (Auth.)

Coastal change and hypoxia in the northern Gulf of Mexico: Part I

Directory of Open Access Journals (Sweden)

2007-01-01

Full Text Available The Committee on Environment and Natural Resources (CENR has identified the input of nutrient-rich water from the Mississippi/Atchafalaya River Basin (MARB as the prime cause of hypoxia in the northern Gulf of Mexico and the prime means for its control. A Watershed Nutrient Task Force was formed to solve the hypoxia problem by managing the MARB catchment. However, the hypoxic zone is also experiencing massive physical, hydrological, chemical and biological changes associated with an immense river-switching and delta-building event that occurs here about once a millennium. Coastal change induced hypoxia in the northern Gulf of Mexico prior to European settlement. It is recommended that for further understanding and control of Gulf hypoxia the Watershed Nutrient Task Force adopt a truly holistic environmental approach which includes the full effects of this highly dynamic coastal area.

New offshore platform in the Mexican Gulf

Energy Technology Data Exchange (ETDEWEB)

Beisel, T.

1982-04-01

After a construction period of only 10 months, the second steel Offshore platform was recently completed in the Mexican Gulf. The pattern for this structure was the Cognac platform. The erection of the new platform, called the 'Cerveza' platform, is described in the article.

Influence of a big oil spill during the Gulf War on intertidal invertebrates

International Nuclear Information System (INIS)

Kado, Ryusuke; Tokuda, Hiroshi; Satoh, Hiroo; Hanawa, Shinichi; Murata, Yukiwo

1993-01-01

It is well known that a massive oil spill washed ashore from Al Khafji to the west side of the Abu Ali Peninsula in the western Arabian Gulf during the Gulf War. In these areas enormous amounts of oil are still left along most beaches at the high tide level. Surveys were carried out to clarify the effects of the massive oil spill

Gulf of Maine Cooperative Bottom Longline Survey Database

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — This database is for a bottom longline (fixed gear) survey executed in the western and central Gulf of Maine targeting complex rocky habitats. The survey is operated...

Gulf of Mexico Protected Species Assessment Aerial Surveys

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — These data sets include a compilation of aerial line-transect surveys conducted over continental shelf waters of the Gulf of Mexico since 1992. The majority of these...

Gulf of Mexico Marine Mammal Vessel Surveys - NRDA

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Large vessel surveys were conducted during June-August and Oct-Nov, 2010 in the north central Gulf of Mexico to collect data on marine mammal spatial distribution...

First oceanographic atlas of the Gulf of Mexico. National Award of Oceanographic Research

International Nuclear Information System (INIS)

Vidal L., F.; Vidal L., V.M.; Hernandez O., A.

1991-01-01

First oceanographic atlas of the Gulf of Mexico National award of oceanographic research. As a result of the research activities applied by Federal Electricity Commission related with oceanographic studies for nuclear stations siting and licensing in coastal areas, doctors Victor Manuel and Francisco Vidal Lorandi and Master in Sciences Abel Hernandez Ochoa got the oceanographic research National award, instituted recently by Mexican Government, by research work published in Oceanographic Atlas of the Gulf of Mexico, Volume II. Atlas presents synthetized oceanographic information about mexican gulf circulation, as well as residence time and water masses distribution. Atlas includes information related with siting and licensing of nuclear stations on shore and has also application, among others, in petroleum, fishery, maritime transportation, and tourism sectors

Environmental permits in Arab Gulf countries - local government perspective

International Nuclear Information System (INIS)

Kuczynski, L.

2002-01-01

The legacy of past environmentally careless oil and gas exploration practices is becoming more apparent as time goes by and our understanding of causes and results increase. In many petroleum producing countries and in Arab Gulf countries in particular, this understanding has resulted in greater social demand for environmental protection and responsible exploitation of limited resources. In response to this demand, governments of the Gulf Region are paying increasingly more attention to the responsible management of environmental impacts of new developments. As a result, most of them require developers to obtain environmental permits supported by a variety of environmental baseline studies, Environmental Impact Assessments and comprehensive Environmental Management Plans. These local environmental requirements are similar to those in North America and Europe, although there are some important differences on account of local environmental, historical and socioeconomic conditions. Developers, who choose to ignore them, often find their projects caught in a web of unfamiliar environmental regulations or administrative procedures that may cause costly and unnecessary delays. Based on the author's Canadian and Arab Gulf regulatory experience, this paper describes some common causes that may delay obtaining environmental permits or cause cancellation of a project, and provides ideas to assist companies in securing necessary permits and licenses. (author)

Seasonal and Interannual Variability in Gulf of Maine Hydrodynamics: 2002–2011

OpenAIRE

Li, Yizhen; He, Ruoying; McGillicuddy, Dennis J.

2014-01-01

In situ observations including long-term moored meteorological and oceanographic measurements and multi-year gulf-wide ship survey data are used to quantify interannual variability of surface wind, river runoff, and hydrographic conditions in the Gulf of Maine during summers 2002–2011. The cumulative upwelling index shows that upwelling (downwelling)-favorable wind conditions were most persistent in 2010 (2005) over the 10-year study period. River discharge was highest in 2005; peak runoff oc...

Policing Iranian Sanctions: Trade, Identity, and Smuggling Networks in the Arabian Gulf

Science.gov (United States)

2013-03-01

Kegan Paul International, 1994), 9–10. 22 A.W. Stiffe, “Ancient Trading Centres of the Persian Gulf: VII Bahrain,” The Geographical Journal 18, no... Kegan Paul International, 1994. Al Naboodah, H.M. “The Commercial Activity of Bahrain and Oman in the Early Middle Ages.” Proceedings of the...Byman, Daniel and Jerrold Green . Political Violence and Stability in the States of the Northern Persian Gulf. California: RAND, 1999. Castles

Mineral assemblages and their distribution patterns in the sediments of the Gulf of Bohai Sea

Energy Technology Data Exchange (ETDEWEB)

Chen, L; Luan, Z; Zheng, T; Xu, W; Dong, T

1980-01-01

This paper presents the results of a study on the mineral assemblages and their distribution patterns in the sediments of the Gulf of Bohai Sea. The 212 bottom-surface sediment samples were collected from the Gulf of Bohai Sea and its tributaries.

Extreme Hurricane-Generated Waves in Gulf of Mexico

National Research Council Canada - National Science Library

Alberto, Carlos; Fernandes, Santos

2005-01-01

.... Data from seven National Data Buoy Center (NDBC) buoys in the Gulf of Mexico, together with an array of pressure and pressure-velocity sensors deployed on the Florida Panhandle shelf during the Office of Naval Research (ONR...

Alternative surveillance technology for the Gulf of Mexico

Science.gov (United States)

2004-04-26

In the Gulf of Mexico, there are two major operating aviation users: low altitude offshore and high altitude. The low altitude offshore operators are primarily helicopter fleets supporting the oil and gas exploration efforts; their traffic typically ...

78 FR 56217 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Shrimp Fisheries of the Gulf of...

Science.gov (United States)

2013-09-12

... Atlantic States AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric... specified in 50 CFR part 622, Subparts A through R for reef fish, red drum, coastal migratory pelagics, and spiny lobster in the Gulf of Mexico, and snapper-grouper, coastal migratory pelagics, dolphin and wahoo...

A cold wind from Texas: Gulf's new chief executive slashes costs and bails out of Russia

International Nuclear Information System (INIS)

Koch, G.

1995-01-01

The Houston-based Torch Energy Advisers Inc. purchased 25% of Gulf Canada Resources Ltd. in November 1994. Torch Energy Advisers' president J.P. Bryan started to restructure the debt-ridden company by letting go of seven of Gulf's nine vice presidents. Later, he pulled Gulf out of Komi Arctic Oil, a problem-plagued joint venture in Russia. A recent analysis of major petroleum companies by Doig's Digest showed that Gulf was among the least efficient producers, with only 21 barrels of crude oil per employee per day in 1993. In order to improve the productivity, a cut of from 10 to 30 per cent of headquarters' staff was predicted. The ultimate goal was rumored to be a 15 per cent reduction in overhead, and up to 30 per cent reduction in operating costs

Hydrographic Conditions in the Gulf of Carpentaria During Australian Monsoon Experiment

Science.gov (United States)

Inoue, M.; Steinberg, C.; Wolanski, E.; Ridd, P.

2002-12-01

Gulf of Carpentaria located in the northern Australia, is a shallow wide basin with the deepest bottom depths of approximately 60 m. It is connected to Arafura Sea to the north and west, and to the Torres Strait to the east. Hydrographic surveys of the Gulf of Carpentaria were carried out in January and March, 1987 as part of Australian Monsoon Experiment. During the January survey, Tropical Cyclone (TC) Irma was formed in the Gulf of Carpentaria. An east-west CTD section at 13o52'S was occupied twice, one prior to and during, and the other after the formation of TC Irma. In addition, two post-Irma east-west sections were occupied at 12o40'S and 11o30'S. The pre-cyclone section indicates a well-defined stratified two-layer system, while the post-cyclone sections show deepening of the surface warm layer due to significant mixing by TC Irma. Overall, significant cooling of near surface warm water on the order of more than 1oC was observed. Significant heat loss estimated for the water column has presumably contributed toward the development of TC Irma. In February 1987, TC Jason was formed in the gulf. During the March survey, two east-west CTD sections were occupied at 11o30'S and 13o52'S. The March survey reveals notable warming of the bottom water. Detailed discussion of the CTD data from the two cruises will be presented.

Prospects for Gulf Region with closed greenhouse

NARCIS (Netherlands)

Campen, J.B.

2009-01-01

In countries such as Saudi Arabia and the United Arab Emirates, water is scarce as rainfall is minimal. Growers in the Gulf Region rely on groundwater for evaporative cooling and irrigation. This source of water is running out and growers are deciding to end production. The governments of the

Temperature, salinity, nutrients, freons, oxygen, currents (ADCP), underway and other measurements collected in the Gulf of Mexico and Atlantic as part of the Gulf of Mexico and East Coast Carbon Cruise (GOMECC) 2007 (NODC Accession 0066603)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — GOMECC Gulf of Mexico and East Coast Carbon Cruise(RB 07-05). North American Carbon Program (NACP) Gulf of Mexico and East Coast Carbon (GOMECC) Cruise on board NOAA...

Gulf of Mexico Sperm Whale Acoustic Prey Study

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — Large vessel surveys were conducted during the summer of 2009 and the winter of 2010 in the north-central Gulf of Mexico to examine the spatial distribution of sperm...

Gulf of Mexico Marine Mammal Assessment Vessel Surveys

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — These data sets are a compilation of large vessel surveys for marine mammal stock assessments in the Gulf of Mexico from 1991 to the present. These are designed as...

Continental slope sea level and flow variability induced by lateral movements of the Gulf Stream in the Middle Atlantic Bight

Science.gov (United States)

Böhm, E.; Hopkins, T. S.; Pietrafesa, L. J.; Churchill, J. H.

2006-08-01

As described by [Csanady, G.T., Hamilton, P., 1988. Circulation of slope water. Continental Shelf Research 8, 565-624], the flow regime over the slope of the southern Middle Atlantic Bight (MAB) includes a current reversal in which southwestward flow over the upper and middle slope becomes entrained in the northeastward current adjacent to the Gulf Stream. In this paper we use satellite-derived data to quantify how lateral motions of the Gulf Stream impact this current system. In our analysis, the Gulf Stream’s thermal front is delineated using a two-year time series of sea surface temperature derived from NOAA/AVHRR satellite data. Lateral motions of the Gulf Stream are represented in terms of temporal variations of the area, east of 73°W, between the Gulf Stream thermal front and the shelf edge. Variations of slope water flow within this area are represented by anomalies of geostrophic velocity as derived from the time series of the sea level anomaly determined from TOPEX/POSEIDON satellite altimeter data. A strong statistical relationship is found between Gulf Stream displacements and parabathic flow over the continental slope. It is such that the southwestward flow over the slope is accelerated when the Gulf Stream is relatively far from the shelf edge, and is decelerated (and perhaps even reversed) when the Gulf Stream is close to the shelf edge. This relationship between Gulf Stream displacements and parabathic flow is also observed in numerical simulations produced by the Miami Isopycnic Coordinate Model. In qualitative terms, it is consistent with the notion that when the Gulf Stream is closer to the 200-m isobath, it is capable of entraining a larger fraction of shelf water masses. Alternatively, when the Gulf Stream is far from the shelf-break, more water is advected into the MAB slope region from the northeast. Analysis of the diabathic flow indicates that much of the cross-slope transport by which the southwestward flow entering the study region is

CEER 2014 Dedicated Session Proposal: Restoring Water Quality along with Restoring the Gulf of Mexico

Science.gov (United States)

This session focuses on the importance of restoring water quality as part of the larger Gulf of Mexico restoration efforts. Water quality has been identified as a significant indicator of water body condition, and Gulf waters have been impacted by increased urban development, agr...

Feeding by grey seals in the Gulf of St. Lawrence and around Newfoundland

Directory of Open Access Journals (Sweden)

M O Hammill

2007-01-01

Full Text Available Diet composition of grey seals in the Gulf of St. Lawrence (Gulf and around the coast of Newfoundland, Canada, was examined using identification of otoliths recovered from digestive tracts. Prey were recovered from 632 animals. Twenty-nine different prey taxa were identified. Grey seals sampled in the northern Gulf of St. Lawrence fed mainly on capelin, mackerel, wolffish and lumpfish during the spring, but consumed more cod, sandlance and winter flounder during late summer. Overall, the southern Gulf diet was more diverse, with sandlance, Atlantic cod, cunner, white hake and Atlantic herring dominating the diet. Capelin and winter flounder were the dominant prey in grey seals sampled from the east coast of Newfoundland, while Atlantic cod, flatfish and capelin were the most important prey from the south coast. Animals consumed prey with an average length of 20.4 cm (Range 4.2-99.2 cm. Capelin were the shortest prey (Mean = 13.9 cm, SE = 0.08, N = 1126, while wolffish were the longest with the largest fish having an estimated length of 99.2 cm (Mean = 59.4, SE = 2.8, N = 63. In the early 1990s most cod fisheries in Atlantic Canada were closed because of the collapse of the stocks. Since then they have shown limited sign of recovery. Diet samples from the west coast of Newfoundland indicate a decline in the contribution of cod to the diet from the pre-collapse to the postcollapse period, while samples from the southern Gulf indicate little change in the contribution of cod.

The Role of Rift Obliquity in Formation of the Gulf of California

Science.gov (United States)

Bennett, Scott Edmund Kelsey

The Gulf of California illustrates how highly oblique rift geometries, where transform faults are kinematically linked to large-offset normal faults in adjacent pull-apart basins, enhance the ability of continental lithosphere to rupture and, ultimately, hasten the formation of new oceanic basins. The Gulf of California rift has accommodated oblique divergence of the Pacific and North America tectonic plates in northwestern Mexico since Miocene time. Due to its infancy, the rifted margins of the Gulf of California preserve a rare onshore record of early continental break-up processes from which to investigate the role of rift obliquity in strain localization. Using new high-precision paleomagnetic vectors from tectonically stable sites in north-central Baja California, I compile a paleomagnetic transect of Miocene ignimbrites across northern Baja California and Sonora that reveals the timing and distribution of dextral shear associated with inception of this oblique rift. I integrate detailed geologic mapping, basin analysis, and geochronology of pre-rift and syn-rift volcanic units to determine the timing of fault activity on Isla Tiburon, a proximal onshore exposure of the rifted North America margin, adjacent to the axis of the Gulf of California. The onset of strike-slip faulting on Isla Tiburon, ca. 8 - 7 Ma, was synchronous with the onset of transform faulting along a significant length of the nascent plate boundary within the rift. This tectonic transition coincides with a clockwise azimuthal shift in Pacific-North America relative motion that increased rift obliquity. I constrain the earliest marine conditions on southwest Isla Tiburon to ca. 6.4 - 6.0 Ma, coincident with a regional latest Miocene marine incursion in the northern proto-Gulf of California. This event likely flooded a narrow, incipient topographic depression along a ˜650 km-long portion of the latest Miocene plate boundary and corresponds in time and space with formation of a newly

Petroleum hydrocarbons in offshore sediments from the Gulf

International Nuclear Information System (INIS)

Al-Lihaibi, S.S.; Al-Omran, Laila

1996-01-01

Petroleum hydrocarbons in offshore sediments from the central part of the Gulf were measured using fluorescence spectrophotometry. Concentrations varied between 4.0 and 56.2 μg/g wet sediment (expressed as Kuwait Crude Oil equivalents), with an average of 12.3 μ/g. Highest concentrations were recorded in the north-west sector, with concentrations decreasing in a south-westerly direction. No significant correlations were observed between petroleum hydrocarbons and sedimentary organic carbon (r-0.07), 'mud' content (r=0.09), 'sand' content (r= -0.08) or 'gravel' content (r= -0.12). Distributions of oil are considered to relate more closely to prevailing current and localized pollutant sources in the region. Despite the substantial inputs of oil to the Gulf, contamination can be considered comparatively low, possibly reflecting physical processes and biological degradation which accelerate removal of petroleum from this marine environment. (author)

The Iranian century: the tension between Iran and the Gulf States

OpenAIRE

Al Kaabi, Yousef H.; Al Kaabi, Khaled M.

2011-01-01

The Arabian Gulf represents a significant part in the world because of its oil wealth. During the last thirty years, three wars have taken place in the region resulting in regional and global instability: the Iran-Iraq war; the Persian Gulf War of 1990-1991, and the U.S. led invasion of Iraq in 2003. The fall of Iraq made Iran more powerful in the region, and as a domination strategy, Iran launched its nuclear program. Iran represents a major power in the region; it can destabilize the region...

Swainson's Thrushes do not show strong wind selectivity prior to crossing the Gulf of Mexico.

Science.gov (United States)

Bolus, Rachel T; Diehl, Robert H; Moore, Frank R; Deppe, Jill L; Ward, Michael P; Smolinsky, Jaclyn; Zenzal, Theodore J

2017-10-27

During long-distance fall migrations, nocturnally migrating Swainson's Thrushes often stop on the northern Gulf of Mexico coast before flying across the Gulf. To minimize energetic costs, trans-Gulf migrants should stop over when they encounter crosswinds or headwinds, and depart with supportive tailwinds. However, time constrained migrants should be less selective, balancing costs of headwinds with benefits of continuing their migrations. To test the hypotheses that birds select supportive winds and that selectivity is mediated by seasonal time constraints, we examined whether local winds affected Swainson's Thrushes' arrival and departure at Ft. Morgan, Alabama, USA at annual, seasonal, and nightly time scales. Additionally, migrants could benefit from forecasting future wind conditions, crossing on nights when winds are consistently supportive across the Gulf, thereby avoiding the potentially lethal consequences of depleting their energetic reserves over water. To test whether birds forecast, we developed a movement model, calculated to what extent departure winds were predictive of future Gulf winds, and tested whether birds responded to predictability. Swainson's Thrushes were only slightly selective and did not appear to forecast. By following the simple rule of avoiding only the strongest headwinds at departure, Swainson's Thrushes could survive the 1500 km flight between Alabama and Veracruz, Mexico.

STS-45 Earth observation of the Persian Gulf and the island of Abu Ali

Science.gov (United States)

1992-01-01

STS-45 Earth observation taken aboard Atlantis, Orbiter Vehicle (OV) 104, is of the northern reaches of the Persian Gulf with the sunglint pattern centered on the Saudi Arabian island of Abu Ali. Bright features along the coast are thought to be deposits of oil, released from a terminal offshore of Kuwait during the recent Persian Gulf War. Further up the coast, in Kuwait, the black, oil-soaked desert surrounding the site of the oil well fires is clearly visible. View was taken from an altitude of 160 nautical miles with OV-104 located at 28 degrees north and 52.8 degrees east. During the STS-45 mission, an international survey team focused on oil contamination of the shallow-water habitants in the area north of Abu Ali Island. Crewmembers contacted the NOAA survey vessel, the R/V Mt. Mitchell, several times and photographed water color and sunglint within the study area and throughout the entire Persian Gulf. These photographic data are expected to aid the Persian Gulf researchers in

Coral reefs in Saudi Arabia: 3.5 years after the Gulf War oil spill

Science.gov (United States)

Vogt, I. P.

1995-11-01

As a consequence of the 1991 Gulf War, 6-8 million barrels of oil were released into the marine environment and a total of 1.12 billion barrels were burned in the Kuwaiti oil fields. In order to detect delayed effects of the Gulf War pollution, six permanent transect lines were placed on Saudi Arabian offshore and inshore reefs. A comparison of three sets of video recordings taken between 1992 and 1994 indicated a significant increase in live coral cover. Therefore, it has been concluded that corals in Saudi Arabia survived the largest oil spill on record remarkably unscathed, with no visible signs of immediate or late effects up to 3.5 years after the Gulf War.

S.83: A Bill to ensure the preservation of the Gulf of Mexico by establishing within the Environmental Protection Agency a Gulf of Mexico Program. Introduced in the Senate of the United States, One Hundred Third Congress, First Session, January 21, 1993

International Nuclear Information System (INIS)

Anon.

1993-01-01

S. 83 may be cited as the open-quotes Gulf of Mexico Preservation Act of 1993.close quotes This Bill discusses findings pertaining to resources in the Gulf of Mexico, describes the establishment of the Gulf of Mexico Program, defines the establishment and duties of the Gulf of Mexico Program Office, and proposes a study of international issues. This Bill also includes an assessment to be prepared by the Administrator, a monitoring, management, protection and restoration plan, a grant program, authorization of appropriations, administrative provisions, and the relationship of the Bill to existing federal and state laws and international treaties

Mesoscale air-sea interactions related to tropical and extratropical storms in the Gulf of Mexico

Science.gov (United States)

Lewis, James K.; Hsu, S. A.

1992-01-01

Observations of the lower atmosphere of the northwestern Gulf of Mexico from November 1982 to mid-February 1983 were studied in which seven significant cyclones were generated in the northwestern gulf. It was found that all seven storms occurred when the vorticity correlate of the horizontal air temperature difference was about 3-5 C above the climatological mean difference. It is shown that a maximum in the frequency of tropical storms within the Gulf of Mexico exists some 275 km south of the Mississippi delta at 27 deg N, 90 deg W. This maximum is a result of only those storms which originate within the gulf. Two plausible effects of the Loop Current and its rings on tropical storms are discussed. One is that these ocean features are large and consolidated heat and moisture sources from which a nearby slowly moving atmospheric disturbance can extract energy. The second is that of the cyclonic vorticity that can be generated in the lower atmosphere by such oceanographic features.

Gulf of California species and catch spatial distributions and historical time series - Developing end-to-end models of the Gulf of California

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The purpose of this project is to develop spatially discrete end-to-end models of the northern Gulf of California, linking oceanography, biogeochemistry, food web...

Iran’s scientific dominance and the emergence of South-East Asian countries in the Arab Gulf Region

Energy Technology Data Exchange (ETDEWEB)

Moed, H.

2016-07-01

A longitudinal bibliometric analysis of publications indexed in Thomson Reuters' Incites and Elsevier's Scopus, and published from the Arab Gulf States and neighbouring countries, shows clear effects of major political events during the past 35 years. Predictions made in 2006 by the US diplomat Richard N. Haass on political changes in the Middle East have come true in the Gulf States’ national scientific research systems, to the extent that Iran has become in 2015 by far the leading country in the Arab Gulf, and South-East Asian countries including China, Malaysia and South Korea have become major scientific collaborators, displacing the USA and other large Western countries. But collaborations patterns among Gulf States show no apparent relationship with differences in Islam denominations. (Author)

78 FR 5404 - Fisheries of the Caribbean, Gulf of Mexico, and South Atlantic; Reef Fish Fishery of the Gulf of...

Science.gov (United States)

2013-01-25

... Malinowski, Southeast Regional Office, NMFS, 263 13th Avenue South, St. Petersburg, FL 33701. Instructions... . FOR FURTHER INFORMATION CONTACT: Rich Malinowski, Southeast Regional Office, NMFS, telephone 727-824-5305; email: rich.malinowski@noaa.gov . SUPPLEMENTARY INFORMATION: The reef fish fishery of the Gulf of...

Identification of Phytoplankton Blooms under the Index of Inherent Optical Properties (IOP Index in Optically Complex Waters

Directory of Open Access Journals (Sweden)

Jesús A. Aguilar-Maldonado

2018-01-01

Full Text Available Phytoplankton blooms are sporadic events in time and are isolated in space. This complex phenomenon is produced by a variety of both natural and anthropogenic causes. Early detection of this phenomenon, as well as the classification of a water body under conditions of bloom or non-bloom, remains an unresolved problem. This research proposes the use of Inherent Optical Properties (IOPs in optically complex waters to detect the bloom or non-bloom state of the phytoplankton community. An IOP index is calculated from the absorption coefficients of the colored dissolved organic matter (CDOM, the phytoplankton (phy and the detritus (d, using the wavelength (λ 443 nm. The effectiveness of this index is tested in five bloom events in different places and with different characteristics from Mexican seas: 1. Dzilam (Caribbean Sea, Atlantic Ocean, a diatom bloom (Rhizosolenia hebetata; 2. Holbox (Caribbean Sea, Atlantic Ocean, a mixed bloom of dinoflagellates (Scrippsiella sp. and diatoms (Chaetoceros sp.; 3. Campeche Bay in the Gulf of Mexico (Atlantic Ocean, a bloom of dinoflagellates (Karenia brevis; 4. Upper Gulf of California (UGC (Pacific Ocean, a diatom bloom (Coscinodiscus and Pseudo-nitzschia and 5. Todos Santos Bay, Ensenada (Pacific Ocean, a dinoflagellate bloom (Lingulodinium polyedrum. The diversity of sites show that the IOP index is a suitable method to determine the phytoplankton bloom conditions.

78 FR 71037 - New Orleans & Gulf Coast Railway Company, Inc.-Lease Exemption Containing Interchange Commitment...

Science.gov (United States)

2013-11-27

... DEPARTMENT OF TRANSPORTATION Surface Transportation Board [Docket No. FD 35777] New Orleans & Gulf... Company New Orleans & Gulf Coast Railway Company, Inc. (NOGC), a Class III rail carrier, has filed a... to a third-party railroad, BNSF Railway Company and the New Orleans Public Belt are located in very...

The upper mantle beneath the Gulf of California from surface wave dispersion. Geologica Ultraiectina (299)

NARCIS (Netherlands)

Zhang, X.

2009-01-01

This thesis is a study on upper mantle shear velocity structure beneath the Gulf of California. Surface wave interstation dispersion data were measured in the Gulf of California area and vicinity to obtain a 3-D shear velocity structure of the upper mantle. This work has particular significance for

A paleomagnetic investigation of vertical-axis rotations in coastal Sonora, Mexico: Evidence for distributed transtensional deformation during the Proto-Gulf shift from a subduction-dominated to transform-dominated plate boundary in the Gulf of California

Science.gov (United States)

Herman, Scott William

The history of late Miocene (Proto-Gulf) deformation on the Sonoran margin of the Gulf of California is key to understanding how Baja California was captured by the Pacific plate and how strain was partitioned during the Proto-Gulf period (12.5-6 Ma). The Sierra el Aguaje and Sierra Tinajas del Carmen are located in southwestern coastal Sonora, Mexico, and represent the eastern rifted margin of the central Gulf of California. The ranges are composed of volcanic units and their corresponding volcaniclastic units which are the result of persistent magmatic activity between 20 and 8.8 Ma, including three packages of basalt and andesite that make excellent paleomagnetic recorders. Based on cross cutting relations and geochronologic data for pre-, syn-, and post-tectonic volcanic units, most of the faulting and tilting in the Sierra El Aguaje is bracketed between 11.9 and 9.0 Ma, thus falling entirely within Proto-Gulf time. A paleomagnetic investigation into possible vertical axis rotations in the Sierra el Aguaje has uncovered evidence of clockwise rotations between ~13º and ~105º with possible translations. These results are consistent with existing field relations, which suggest the presence of large (>45°) vertical axis rotations in this region. This evidence includes: a) abrupt changes in the strike of tilted strata in different parts of the range, including large domains characterized by E-W strikes b) ubiquitous NE-SW striking faults with left lateral-normal oblique slip, that terminate against major NW-trending right lateral faults, and c) obliquity between the general strike of tilted strata and the strike of faults. These rotations occurred after 12 Ma and largely prior to 9 Ma, thus falling into the Proto-Gulf period. Such large-scale rotations lend credence to the theory that the area inboard of Baja California was experiencing transtension during the Proto-Gulf period, rather than the pure extension that would be the result of strain partitioning

Seasonal and Interannual Variability of Eddy Field and Surface Circulation in the Gulf of Aden

Science.gov (United States)

Al Saafani, M. A.; Shenoi, S. S. C.

2006-07-01

The circulation in the Gulf of Aden is inferred from three different data sets: h istorical sh ip drifts , hydrography , and satellite altimeter derived sea level (Topex/Poseidon, Jason and ERS) . The circulation in th is semi-enclosed basin is marked with strong seasonality with reversals in the direction of flows twice a year follow ing the reversal in mon soonal winds. During the win ter mon soon (November - February) there is an inflow from Arabian Sea; an extension of Arabian Coastal Current (ACC) . During sou thwest mon soon (June - August) the flow is generally towards east especially along the northern coast of Gulf of Aden. The geostrophic currents also show that the circulation in the gulf is embedded with mesoscale eddies. These westward propagating eddies appear to enter the Gulf of Aden from the western Arabian Sea in win ter. The relative contribu tion of mesoscale eddies to the circulation in the gulf were estimated using altimeter derived Sea level anomaly (SLA) for the years 1993 to 2003 . The effect of these mesoscale eddies extend over the entire water colu mn . The propagation speeds, of these eddies, estimated using weekly spaced altimeter derived SLA (2002 - 2003) is ~ 4 .0 - 5 .3 cm s . The sum of the speeds of second mode Ro ssby wave and the mean current (4.8 cm s ) matches with the propagation speeds of eddies estimated using SLA . Hence, second mode baroclin ic Rossby waves appear to be responsib le for the westward propagation of eddies in the Gulf of Aden. The presence of these eddies in the temperaturesalin ity climato logy confirms that they are no t transient features.

78 FR 19176 - Endangered and Threatened Wildlife; 90-day Finding on a Petition to List Sperm Whales in the Gulf...

Science.gov (United States)

2013-03-29

... Deepwater Horizon spill, destruction of coastal habitats, water pollution including the Gulf's ``dead zone... Petition to List Sperm Whales in the Gulf of Mexico as a Distinct Population Segment Under the Endangered... or threatened distinct population segment (DPS) in the Gulf of Mexico. We find that the petition...