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Sample records for san vicente volcano

  1. Volcano-hazard zonation for San Vicente volcano, El Salvador

    Science.gov (United States)

    Major, J.J.; Schilling, S.P.; Pullinger, C.R.; Escobar, C.D.; Howell, M.M.

    2001-01-01

    San Vicente volcano, also known as Chichontepec, is one of many volcanoes along the volcanic arc in El Salvador. This composite volcano, located about 50 kilometers east of the capital city San Salvador, has a volume of about 130 cubic kilometers, rises to an altitude of about 2180 meters, and towers above major communities such as San Vicente, Tepetitan, Guadalupe, Zacatecoluca, and Tecoluca. In addition to the larger communities that surround the volcano, several smaller communities and coffee plantations are located on or around the flanks of the volcano, and major transportation routes are located near the lowermost southern and eastern flanks of the volcano. The population density and proximity around San Vicente volcano, as well as the proximity of major transportation routes, increase the risk that even small landslides or eruptions, likely to occur again, can have serious societal consequences. The eruptive history of San Vicente volcano is not well known, and there is no definitive record of historical eruptive activity. The last significant eruption occurred more than 1700 years ago, and perhaps long before permanent human habitation of the area. Nevertheless, this volcano has a very long history of repeated, and sometimes violent, eruptions, and at least once a large section of the volcano collapsed in a massive landslide. The oldest rocks associated with a volcanic center at San Vicente are more than 2 million years old. The volcano is composed of remnants of multiple eruptive centers that have migrated roughly eastward with time. Future eruptions of this volcano will pose substantial risk to surrounding communities.

  2. Evolving Hazard Monitoring and Communication at San Vicente Volcano, El Salvador

    Science.gov (United States)

    Bowman, L. J.; Gierke, J. S.

    2014-12-01

    El Salvador has 20 potentially active volcanoes, four of which have erupted in the last 100 years. Since San Vicente Volcano has had no historic eruptions, monitoring is not a high priority; especially given the current eruptive crisis at San Miguel Volcano. Though probability of eruptive hazards remains low at San Vicente, it is arguably one of the most hazardous volcanoes in the country due to rainfall-induced landslides and debris-flow risk. At least 250 deaths occurred in November 2009 from landslides and debris flows triggered by Hurricane Ida. This disaster caused the Universidad de El Salvador - Facultad Multidisciplinaria Paracentral (UES-FMP, San Vicente, El Salvador) to partner with governmental and nongovernmental organizations (including the U.S. Peace Corps, U.S. Fulbright Program, Korean International Cooperation Agency, Protección Civil and the Centro de Protección para Desastres (CEPRODE)) to focus its faculty and student research toward hazard monitoring and risk studies. Newly established monitoring efforts include: measurement of surface cracks and localized rainfall by Protección Civil and local residents using crude extensometers and rain gauges; installation of six weather stations that operate within the most at-risk municipalities; seismic refraction surveys to better characterize stratigraphy and seasonal water table changes; and most recently, a USAID/NSF-funded initiative partnered with the UES-FMP to monitor seasonal hydrologic conditions related to flooding and groundwater recharge. The information from these initiatives is now used to communicate current conditions and warnings through a network of two-way radios established by CEPRODE and Protección Civil. Representatives from the multi-institutional team also communicate the data to authorities who make better-informed decisions regarding warnings and evacuations, as well as determine suitable areas for population relocation in the event of a crisis. Data will eventually be used

  3. Social vulnerability as a contributing factor to disasters in Central America: A case study at San Vicente volcano, El Salvador

    Science.gov (United States)

    Bowman, L. J.; Henquinet, K. B.; Gierke, J. S.; Rose, W. I.

    2012-12-01

    El Salvador's geographic location on the Pacific Ring of Fire at the juncture of the Caribbean and Cocos plates exposes its population to various natural hazards, including volcanic eruptions (e.g., Santa Ana in 2005), earthquakes (e.g., January 13 and February 13, 2001), and landslides and flooding due to tropical rainfall events (e.g., Hurricane Mitch in 1998, Hurricane Stan in 2005). Such hazards can be devastating anywhere, but the condition of social vulnerability in which many Salvadorans currently live exacerbates the impacts of these hazards. Aspects contributing to most rural Salvadorans being marginalized include a colonial history marked by ethnic discrimination and laws prohibiting land ownership, lack of access to desirable land in an agrarian society, a poor education system, global economic policies that foster inequality, political marginalization, a bloody civil conflict, and rampant criminality and violence. In November 2009, an extreme rainfall event triggered landslides and lahars killing over 200 people at San Vicente volcano. This disaster brought to light weaknesses in disaster preparedness and response plans. Despite the existence of recent hazard maps and lahar inundation models (2001), and the occurrence of a similar, deadly event in 1934, the population appeared to be unaware of the risk, and lacked the organization and decision-making protocols to adequately deal with the emergency. Therefore, in the aftermath of the 2009 lahars, much of the focus on disaster risk reduction (DRR) initiatives has been aimed at the communities affected by this most recent event. Our study examines root causes of social vulnerability and assesses the apparent impacts of these interventions on the population, including individual's perceptions regarding these risk-reducing interventions. Two years after the event, though aid abounds, many people remain vulnerable to hazards in this area. Semi-structured interviews were completed with survivors of the 2009

  4. Edificio Roca, calle San Vicente, 32 (1934-36) Valencia: proyecto de interiorismo

    OpenAIRE

    CARBONELL SANTACRUZ, MARÍA DE LA LUZ

    2012-01-01

    Este Proyecto Final de Grado trata sobre la reutilización del Edificio Roca (1934-36), que está situado en la calle San Vicente, 32, de Valencia y es obra del arquitecto Vicente Valls Gadea (1985-1922). El proyecto se articula en tres fases. La fase inicial comienza con el estudio histórico de la ciudad de Valencia. A continuación trata de la arquitectura europea a partir de la Revolución Industrial y el movimiento arquitectónico racionalista en Valencia. Por último, se estudia la calle...

  5. Incidencia del suicidio consumado en el partido judicial de San Vicente del Raspeig (Alicante Consummated suicide rate in the judicial district of San Vicente del Raspeig (Alicante

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    G. Ayala Espinosa

    2005-04-01

    Full Text Available OBJETIVOS: 1.- Determinar el número de casos de suicidio consumado en San Vicente del Raspeig entre 1990 y 2001. 2.- Describir las características, circunstancias y factores de riesgo asociados. METODOLOGÍA: Se trata de una investigación con diseño de serie temporal compuesta de un conjunto de diez estudios transversales anuales y consecutivos en el periodo 1990-2001. Como fuente de obtención de datos se estudian las diligencias previas de los archivos de los juzgados del Partido Judicial San Vicente del Raspeig. Las variables a considerar son: género, edad, estado civil, mecanismo, lugar del suicidio, municipio dónde tuvo lugar, año del suicidio, intentos anteriores y documentos dejados. Se ha utilizado el test chi-cuadrado y un nivel de significación preestablecido (pOBJECTIVES: 1.- To determine the number of consummated suicides in San Vicente del Raspeig between 1990 and 2001. 2.- To describe the characteristics, circumstances and associated risk factors. METHODOLOGY: It is an investigation of a temporary series made of a sample of ten annual studies between 1990-2001. We used as a source the previous investigations found in the archives of the courts of San Vicente del Raspeig (Alicante. The variables to consider are: gender, age, marital status, mechanism, place of suicide, county where it took place, year of suicide, number of attempts previousl and notes left. We used the test as "chi-cuadrado" and a previous determined significance level (p<0.05. RESULTS: The number of suicides is 92. More men (63 than women (29 commit suicide with a proportion of 2.17:1. In all ages we found men that committed suicide. We did not find any women that committed suicide under the age of 30. Men between 50-59 and 70-79 and women around 60 are in the highest rate (p=0.040. Married people commit suicide more than single people with 39 cases, of which 28 are men (56% and 11 women (45.83%. Men prefer hanging (44.44% and women jumping (51.72% (p=0

  6. Una fosa común en el interior de Argentina: el Cementerio de San Vicente

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    Darío Olmo

    2009-04-01

    Full Text Available ResumenLa Antropología Forense ha tenido un papel fundamental en las investigaciones sobre el terrorismode estado en Argentina durante el último siglo, y todavía lo tiene: La exhumación de los cadáveres noidentificados enterrados en fosas comunes y tumbas individuales y el análisis de los restos recuperadospara su identificación y determinación de la causa de muerte. En el caso aquí descrito, las técnicasforenses y arqueológicas son esenciales para la localización de las fosas comunes en San Vicente,Córdoba, distinguiendo entre los desaparecidos y otros muertos allí enterrados, la determinación de laidentidad y la reconstrucción de la forma en que fueron asesinados.AbstractForensic anthropology had a fundamental role to play in the process of investigations about StateTerrorism in Argentina during the last century, and still does: that of exhuming the unidentified bodiesstill buried in common and individual graves and of analyzing the recovered remains towards theiridentification and determination of the cause of death. In the case described here, forensicanthropological and archaeological skills were essential in locating the mass graves at San Vicente,Córdoba, distinguishing among disappeared and non-disappeared dead, determining identity, andreconstructing the manner in which the disappeared were killed.

  7. San José Pignatelli (1735-1811 y Vicente Requeno(1743-1811, socios de la Academia Clementina

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    Antonio ASTORGANO ABAJO

    2009-11-01

    Full Text Available RESUMEN: El objeto de este trabajo es trazar las relaciones de los jesuitas expulsos, san José Pignatelli (1735-1811 y Vicente Requeno (1743-1811, amantes de las Bellas Artes, con la Academia Clementina en la Bolonia de finales del siglo XVIII.ABSTRACT: The aim of this work is to trace the relationships between expelled Jesuits, Saint José Pignatelli (1735-1811 and Vicente Requeno (1743-1811, both Fine Arts lovers, and the Clementine Academy of Bologna at the end of the 18th century.

  8. Lahar-hazard zonation for San Miguel volcano, El Salvador

    Science.gov (United States)

    Major, J.J.; Schilling, S.P.; Pullinger, C.R.; Escobar, C.D.; Chesner, C.A.; Howell, M.M.

    2001-01-01

    San Miguel volcano, also known as Chaparrastique, is one of many volcanoes along the volcanic arc in El Salvador. The volcano, located in the eastern part of the country, rises to an altitude of about 2130 meters and towers above the communities of San Miguel, El Transito, San Rafael Oriente, and San Jorge. In addition to the larger communities that surround the volcano, several smaller communities and coffee plantations are located on or around the flanks of the volcano, and the PanAmerican and coastal highways cross the lowermost northern and southern flanks of the volcano. The population density around San Miguel volcano coupled with the proximity of major transportation routes increases the risk that even small volcano-related events, like landslides or eruptions, may have significant impact on people and infrastructure. San Miguel volcano is one of the most active volcanoes in El Salvador; it has erupted at least 29 times since 1699. Historical eruptions of the volcano consisted mainly of relatively quiescent emplacement of lava flows or minor explosions that generated modest tephra falls (erupted fragments of microscopic ash to meter sized blocks that are dispersed into the atmosphere and fall to the ground). Little is known, however, about prehistoric eruptions of the volcano. Chemical analyses of prehistoric lava flows and thin tephra falls from San Miguel volcano indicate that the volcano is composed dominantly of basalt (rock having silica content

  9. Causalidad del vértigo en el Hospital Universitario San Vicente de Paúl

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    Javier A. Ortiz

    1988-01-01

    Full Text Available En el período 1984-1986 se estudiaron en el Servicio de Otorrinolaringología del Hospital Universitario San Vicente de Paúl de Medellín, 87 pacientes con vértigo; se halló que el origen era periférico en el 62, 1% y central en el 11,5% de los casos; no se logró definir la causa en el 20,7% de los pacientes, pese a la observación prolongada ya los exámenes paraclínicos. En el grupo de pacientes con vértigo de origen central la mitad presentaban alteraciones de tipo vascular; la enfermedad de Meniere fue la primera causa en el grupo de pacientes con vértigo de origen periférico (18,5%; siete de los diez pacientes con esta enfermedad presentaron compromiso de ambos oídos. La sífilis ótica causó el 7,4% de los vértigos periféricos, razón por la que se recomienda practicar a todo paciente con trastornos del equilibrio una serología que incluya, en caso de negatividad de la reacción de floculación, un FTA-ABS.

  10. The Club Sporting. Social organization in San Vicente de Chucurí 1962- 1966

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    Rene Parra Jaimes

    2009-06-01

    Full Text Available The article at hand analyzes and describes the dynamic and organizational shape of the Club Sporting, a civic association of a sporting character, in the municipality of San Vicente de Chucurí (Santander, Colombia between 1962 and 1966. The objective is to explain its impact on the cultural and everyday life of the members and inhabitants of the municipality, and how the project is able to motivate the social and political participation of citizens. The text describes how the main activity which brought all of the activities together is the sporting routine and how, in particular, soccer and field and track allowed for its inhabitants to create emotional bonds, social solidarity, spaces for entertainment, recreation, and the achievement of a particular sport infrastructure that was inexistent until that moment. The rigorous documentary is backed by field work whose information is collected with the techniques of interviewing, consultations of local public and private archives, and secondary sources which motivate the author to center on the local social actors and natural leaders of the community.

  11. El Club Sporting. Organización social en San Vicente de Chucurí

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    Rene Parra Jaimes

    2009-01-01

    Full Text Available El presente artículo analiza y describe la dinámica y forma organizacional del Club Sporting, asociación cívica de carácter deportivo, en el municipio de San Vicente de Chucuri (Santander, Colombia entre 1962 y 1966. El objetivo es explicar su incidencia en la vida cultural y cotidiana de los miembros y habitantes del municipio, y cómo el proyecto logra motivar la participación social y política de la ciudadanía. El texto describe cómo la actividad principal que aglutina todas las actividades es el quehacer deportivo y en particular el futbol y atletismo, permite a sus habitantes crear lazos de afecto, solidaridad social, espacios de entretenimiento, recreación y la consecución de cierta infraestructura deportiva inexistente hasta ese momento. El acerbo documental se apoya en un trabajo de campo cuya información es recogida con la técnica de entrevistas, la consulta de archivos locales públicos y privados, y fuentes secundarias que motivaron al autor centrarse en actores sociales locales y líderes naturales de la comunidad.

  12. Odour evaluation in a WWTP. The case study of San Vicente de la Barquera (Cantabria); Evaluacion del olor generado en una EDAR. El caso de San Vicente de la Barquera (Cantabria)

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    Castillo Alonso, E.; Esteban Garcia, A. L.; Lobo Garcia de Cortazar, A.

    2005-07-01

    The aim of this study was to evaluate the odour problems in the WWTP located in San Vicente de la Barquera (Cantabria, Spain), before and after the set up of the odour treatment system. Odour was measured by determining the concentration of H{sub 2}S in air. A portable equipment with sensibility of 3 ppb was used. Odour maps, which reflect the concentration detected in each point corresponding to the different environmental and operational situations studied, were performed. The obtained results show the usefulness of the method used to detect the odour sources and nuisances in the WWTP area. (Author) 22 refs.

  13. Intervención en el actual programa de rehabilitación cardiaca del hospital San Vicente de Paul

    OpenAIRE

    Barquero León, Adriana, Rojas Campos Luis Alberto

    2010-01-01

    Tesis texto completo En esta práctica se incluyeron 19 pacientes que cumplían con los criterios de inclusión, pero sólo concluyeron 11 de estos. Se toman en cuenta pacientes que sufren algún tipo de cardiopatía y que fueron referidos al Servicio de Rehabilitación Cardiaca del Hospital San Vicente de Paúl de Heredia. Con una duración de 120 horas contacto con el paciente, divididas en 34 sesiones realizadas durante dos meses y medio. Se realiza un diagnóstico para partir de datos actuales y...

  14. Los talleres de la Sociedad San Vicente de Paúl de Medellín: 1889-1910

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    Fernando Botero Herrera

    1996-05-01

    Full Text Available El crecimiento urbano y los procesos de modernización económica en Medellín, así como los conflictos y agitaciones sociales que venían ocurriendo en Europa, ligados en parte a las ideas socialistas que se venían difundiendo en ese continente, crearon en nuestro medio la necesidad de racionalizar la caridad indiscriminada para con los pobres y, por otra parte, crearon la conciencia, en algunos sectores de la elite conservadora medellinense, de la necesidad de erigir barreras de contención contra el comunismo y el socialismo a través de la denominada "limosna preventiva". Con este propósito se creó en 1882 en Medellin --en 1857 se había fundado en Bogotá-- la Sociedad San Vicente de Paúl, cuya casa matriz se encontraba en Francia.

  15. Hepatotoxicidad por antituberculosos en el Hospital Universitario San Vicente de Paúl, Medellín, 2005-2007

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    Sigifredo Ospina4

    2008-11-01

    Full Text Available OBJETIVO: determinar la incidencia de hepatotoxicidad por medicamentos antituberculosos, en pacientes tratados en el Hospital Universitario San Vicente de Paúl, de Medellín, en el período comprendido entre enero de 2005 y diciembre de 2007. MÉTODOS: estudio retrospectivo de toda la población con diagnóstico de tuberculosis en el período en mención. RESULTADOS: se incluyeron 224 historias y se encontró una incidencia de hepatotoxicidad de 21%, mayor que la reportada en la literatura. El principal factor de riesgo encontrado para el desarrollo de la hepatotoxicidad fue el VIH; en contraste con otros estudios, factores como edad, sexo y raza no fueron de riesgo para el desarrollo de la misma. Encontramos también que no hubo acuerdo en cuanto a la conducta para seguir una vez diagnosticada la hepatotoxicidad; solo en el 54% de los casos se suspendió el tratamiento y se hizo reintroducción escalonada. CONCLUSIÓN: el estudio evidencia la necesidad de programas de farmacovigilancia que busquen activamente esta complicación y desarrollen guías para unificar conceptos y protocolos de tratamiento.

  16. Central nervous system tuberculosis in children: review of 35 cases at the Hospital Universitario San Vicente de Paúl in Medellín, Colombia.1997-2004. Meningoencefalitis tuberculosa en niños: Revisión de 35 casos en el Hospital Universitario San Vicente de Paúl en Medellín, Colombia. 1997-2004

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    José William Cornejo Ochoa; Dagoberto Nicanor Cabrera Hémer; Rodrigo Andrés Solarte Mila

    2005-01-01

    Objetive. To document the clinical and diagnostic features and to explore factors associated with central nervous system tuberculosis at the “Hospital San Vicente de Paúl (HUSVP)” in Medellín-Colombia. Patients and methods. Review of the patient’s records to obtain information on demographic data, medical history, clinical manifestations, laboratory results, treatment and complications of 35 children with central nervous system tuberculosis admitted to the hospital between July 1997 and July ...

  17. Una fosa común en el interior de Argentina: el Cementerio de San Vicente

    OpenAIRE

    Darío Olmo; Mercedes Salado Puerto

    2008-01-01

    ResumenLa Antropología Forense ha tenido un papel fundamental en las investigaciones sobre el terrorismode estado en Argentina durante el último siglo, y todavía lo tiene: La exhumación de los cadáveres noidentificados enterrados en fosas comunes y tumbas individuales y el análisis de los restos recuperadospara su identificación y determinación de la causa de muerte. En el caso aquí descrito, las técnicasforenses y arqueológicas son esenciales para la localización de las fosas comunes en San ...

  18. Plan Técnico de Aprovechamiento Cinegético del Coto Deportivo de Caza de San Vicente de La Sonsierra LO-10.014, en La Rioja.

    OpenAIRE

    Ajamil Sanz, Paula

    2015-01-01

    La finalidad de este proyecto es redactar el Plan Técnico de Caza del Coto Deportivo de San Vicente de La Sonsierra, LO-10.014 para que, conforme a la ley, disponga de un aprovechamiento ordenado y sostenible de sus recursos cinegéticos. En el Plan Técnico presentado se ha hecho un estudio del estado natural actualizado del coto, que influye directamente sobre las poblaciones y el ejercicio de la caza, así como sobre el estado socioeconómico. Se ha estudiado detalladamente el estado cine...

  19. La iglesia altomedieval de la Asunción en San Vicente del Valle (Burgos: historiografía, estratigrafía e interpretación

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    Arce Sainz, Fernando

    2010-12-01

    Full Text Available The results of the archaeological building record of the church of La Asunción (San Vicente del Valle, Burgos are here exposed. Two relevant Pre-Romanesque building phases have been found out: a first church and its later transformation. La Asunción is interpreted within a coherent architectural group, both technically and historically, whose different members may and have to share information in order to obtain a systematic understanding of architectural production and thus to advance within the current historiographical context, this one dominated by a constant discussion about the chronologies of these buildings.Se presentan los resultados de la lectura estratigráfica de la iglesia de la Asunción (San Vicente del Valle, Burgos, en la que se descubren dos intervenciones arquitectónicas relevantes prerrománicas (la construcción de un primer edificio y su transformación en un momento posterior. El edifico es interpretado como parte de una familia arquitectónica coherente, técnica e históricamente, cuyos diferentes miembros pueden y deben compartir información entre ellos en aras de una comprensión sistémica de la producción arquitectónica que ayude a avanzar en el actual contexto historiográfico, dominado por una discusión constante sobre las cronologías de estos edificios.

  20. La acusación como forma de Intimidación política en San Vicente (Antioquia-Colombia, 1930-1935

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    Jorge Alberto Morales Agudelo

    2014-05-01

    Full Text Available El artículo analiza la acusación política en San Vicente, municipalidad del departamento de Antioquia en Colombia, durante el primer quinquenio de la década de 1930. El trabajo describe su dinámica con el apoyo de múltiples memoriales, que desde la localidad se dirigen a la gobernación. La presencia de un gamonalismo local que influyó en todos los ámbitos de la vida comunal en San Vicente, configura la importancia de estudiar el fenómeno. La síntesis de la historia política del país vista desde las municipalidades todavía está en construcción, y este trabajo aporta un caso en el que la acusación permanente y el poder del gamonalismo local fueron obstáculos para generar gobernabilidad en municipios pequeños e incomunicados.

  1. La acusación como forma de intimidación política en San Vicente (Antioquia-Colombia, 1930-1935

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    Jorge Alberto Morales Agudelo

    2014-01-01

    Full Text Available El artículo analiza la acusación política en San Vicente, municipalidad del depar - tamento de Antioquia en Colombia, durante el primer quinquenio de la década de 1930. El trabajo describe su dinámica con el apoyo de múltiples memoriales, que desde la localidad se dirigen a la gobernación. La presencia de un gamonalismo local que influyó en todos los ámbitos de la vida comunal en San Vicente, configura la importancia de estudiar el fenómeno. La síntesis de la historia política del país vista desde las municipalidades todavía está en construcción, y este trabajo aporta un caso en el que la acusación permanente y el poder del gamonalismo local fueron obstáculos para generar gobernabilidad en municipios pequeños e incomunicados.

  2. San Vicente Ferrer en una tabla procedente de Alcalá La Real: precisiones y propuestas en torno a la Aparición de Cristo a San Pedro Mártir, atribuida a Juan Correa de Vivar

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    Quesada Quesada, José Joaquín

    2013-06-01

    Full Text Available New information is offered concerning a panel attributed to the Toledan painter Juan Correa de Vivar, giving its provenance as the city of Alcalá la Real (Jaén and proposing that the iconographic theme represented is the Vision in Avignon, related to Saint Vincent Ferrer.Se aportan nuevos datos acerca de una tabla atribuida al pintor toledano Juan Correa de Vivar, señalando como su lugar de procedencia la ciudad de Alcalá la Real (Jaén y proponiendo como tema iconográfico la Visión de Avignon, relativa a San Vicente Ferrer.

  3. Camino a Barrancabermeja: antecedentes del proceso de colonización en San Vicente de Chucurí 1864-1900

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    Daniel Alfonso León

    2012-01-01

    Full Text Available En las tres últimas décadas del siglo XIX se dinamizaron varios procesos de colonización en las vertientes del departamento de Santander, Colombia. Conocida como serranía de los Yariguies, en su ladera occidental se dio la formación del municipio de San Vicente de Chucurí. Este trabajo presenta un acercamiento a la relación entre la construcción del camino entre Zapatoca y el río Magdalena, los usos de la tierra en algunos trayectos de su recorrido y la formación del proceso de colonización entre 1870 y 1910. Se destacan particularmente las razones que compartieron políticos y comerciantes con respecto a la construcción de la vía y el carácter con que se asumieron los problemas para mantener su funcionamiento.

  4. La cetrería en los ejemplos, símiles y metáforas de san Vicente Ferrer

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    Olmos de León, Ricardo M.

    2012-06-01

    Full Text Available Vincent Ferrer used in his sermons many and varied resources to make your message intelligible to its many listeners. One such resource was hunting activities and especially the form of hunting with birds. On the one hand, this activity was provided appropriate elements to construct analogies that facilitate the understanding of the word of God. However, on the other hand, it seems that perhaps other reasons may explain this preference of the speaker, more related to their own experience and the reality of the society to which he was going. And, in addition to the textual sources, father Vincent often drew on his own experience and, indeed, to those aspects of the daily lives of his audience. From the references we find in the sermons of saint Vincent we can deduce that the preacher should know first hand the various aspects of falconry, so it should not be hard to use something familiar to construct analogies that enable their audience understand the complex theological concepts and achieve the transformation of their lives, according to the moral that the preacher sought to implement.Vicente Ferrer utilizó en sus sermones numerosos y variados recursos para poder hacer inteligible su mensaje a su nutrido auditorio. Uno de estos recursos fueron las actividades venatorias y, especialmente, la modalidad de caza con aves de presa. Por un lado, esta actividad le proporcionó elementos adecuados para construir las analogías que facilitarían la comprensión de la palabra de Dios. Sin embargo, por otro lado, parece que otras razones podrían explicar esta preferencia del predicador, más relacionadas con su propia experiencia y con la realidad de la sociedad a la que se dirigía. Y es que, además de las fuentes textuales, a menudo el padre Vicente recurrió a sus vivencias y, más aún, a aquellos aspectos de la vida cotidiana de su auditorio. A partir de las referencias que encontramos en los sermones de san Vicente podemos deducir que el

  5. Analysis of prenatal care that is provided to pregnant women in the province of Heredia who give birth in the San Vicente de Paul Hospital

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    Nathalie Alfaro Vargas

    2014-04-01

    Full Text Available This article presents the main results of a quantitative research design with a non- experimental descriptive cross, which aimed to analyze prenatal care that is provided to pregnant women in the province of Heredia who gave birth at St. Vincent Hospital de Paul in 2012. The population consisted of pregnant women who delivered at the hospital between the months of December 2011 to November 2012 and by medical professionals and nurses whowork for the health areas of Heredia and San Vicente de Paul Hospital, which provide prenatal control. To collect information three instruments considered infrastructure, equipment and procedures to carry out prenatal care, in addition, the level of satisfaction of pregnant women and the professionals were used. The investigation determined that the infrastructure to provide the prenatal control of health areas in the province of Heredia is in good condition, however, requires maintenance and suitability to be accessible to the entire population. Furthermore, the Costa Rican Social Security has a low coverage of antenatal care with compliance with quality criteria and otherwise report the information obtained during the prenatal control in the Perinatal Carnet is incomplete and incorrect. Finally there is little or almost no participation of professionals and Gynecological Nursing, Obstetric and Perinatal, in the process of prenatal care , although national legislation and recognize that these studies and these professionals have the necessary skills to provide adequate control

  6. Seismicity at Fuego, Pacaya, Izalco, and San Cristobal Volcanoes, Central America, 1973-1974

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    McNutt, S.R.; Harlow, D.H.

    1983-01-01

    Seismic data collected at four volcanoes in Central America during 1973 and 1974 indicate three sources of seismicity: regional earthquakes with hypocentral distances greater than 80 km, earthquakes within 40 km of each volcano, and seismic activity originating at the volcanoes due to eruptive processes. Regional earthquakes generated by the underthrusting and subduction of the Cocos Plate beneath the Caribbean Plate are the most prominent seismic feature in Central America. Earthquakes in the vicinity of the volcanoes occur on faults that appear to be related to volcano formation. Faulting near Fuego and Pacaya volcanoes in Guatemala is more complex due to motion on a major E-W striking transform plate boundary 40 km north of the volcanoes. Volcanic activity produces different kinds of seismic signatures. Shallow tectonic or A-type events originate on nearby faults and occur both singly and in swarms. There are typically from 0 to 6 A-type events per day with b value of about 1.3. At very shallow depths beneath Pacaya, Izalco, and San Cristobal large numbers of low-frequency or B-type events are recorded with predominant frequencies between 2.5 and 4.5 Hz and with b values of 1.7 to 2.9. The relative number of B-type events appears to be related to the eruptive states of the volcanoes; the more active volcanoes have higher levels of seismicity. At Fuego Volcano, however, low-frequency events have unusually long codas and appear to be similar to tremor. High-amplitude volcanic tremor is recorded at Fuego, Pacaya, and San Cristobal during eruptive periods. Large explosion earthquakes at Fuego are well recorded at five stations and yield information on near-surface seismic wave velocities (??=3.0??0.2 km/sec.). ?? 1983 Intern. Association of Volcanology and Chemistry of the Earth's Interior.

  7. caracterización de los accidentes de trabajo en el personal clínico del servicio de urgencias de la ESE Hospital San Vicente de Arauca de junio a diciembre de 2014

    OpenAIRE

    2015-01-01

    Tesis: (Especialista en Administración de la Salud). Universidad Católica de Manizales. Facultad de Salud, 2015 En la ESE hospital San Vicente se tiene estipulado y protocolizado el Manual conjunto de Normas de Bioseguridad Hospitalarias, tiene como objetivo promover y generar una cultura institucional altamente comprometida con su autocuidado, razón por la cual cuentan con un manual que hace énfasis en los trabajadores de la salud de todos los niveles de atención para que adop...

  8. Incidencia de insuficiencia renal aguda en niños hospitalizados por quemaduras en el Hospital Universitario San Vicente de Paúl de Medellín, 2007-2008

    OpenAIRE

    José William Cornejo Ochoa; Juan José Vanegas Ruiz; Sandra Milena Brand; Carolina Giraldo Alzate

    2008-01-01

    INTRODUCCIÓN: las quemaduras en niños se han identificado como causa principal de trauma y su asociación con insuficiencia renal aguda es una de las complicaciones más temidas debido a su alta tasa de mortalidad. OBJETIVO: establecer la incidencia de insuficiencia renal aguda y describir algunos de los factores asociados en niños quemados menores de 18 años atendidos en el Hospital Universitario San Vicente de Paúl de Medellín. MATERIALES Y MÉTODOS: estudio de cohorte prospectivo y descriptiv...

  9. Análisis del control prenatal que se brinda a las gestantes de la provincia de Heredia que tuvieron su parto en el Hospital San Vicente de Paúl

    OpenAIRE

    Alfaro Vargas, Nathalie; Campos Vargas, Grettel

    2014-01-01

    Este artículo presenta los principales resultados de una investigación cuantitativa, con un diseño no experimental de tipo descriptivo transversal, la cual tuvo por objetivo analizar el control prenatal que se brinda a las gestantes de la provincia de Heredia que tuvieron su parto en el Hospital San Vicente de Paúl durante el año 2012. La npoblación estuvo constituida por las gestantes que tuvieron su parto en dicho hospital entre los meses de diciembre 2011 a noviembre 2012 y por los profesi...

  10. Characteristics of the Seismicity in the San Martin Tuxtla volcano area, Veracruz, Mexico

    Science.gov (United States)

    Espindola, J.; Zamora-Camacho, A.; Godinez, M.

    2012-12-01

    San Martin Tuxtla volcano (18.572N, 95.169W, 1650 masl) is a large volcano rising in the midst of the Tuxtla volcanic field in the State of Veracruz, eastern México. The last eruption of this volcano occurred in 1793 and produced thick ash fall deposits in its vicinity. Due to increasing population in the area, the volcano poses a significant risk. To determine the seismic characteristics of the area and evaluate their possible relationship with the volcano we installed a network of three seismic stations in its surroundings. The array has recorded the seismic activity from 2007 to 2011. We present the results of the analysis of the records of this period, which in general show that the seismicity in the area is relatively low both in frequency and magnitude: only 51 events of magnitude (Mc) less than 2.5 were observed and located. Most of the earthquakes are typical volcano tectonic events occurring at shallow depths (<< 12 km) around the volcano. This low level of seismicity is probably a characteristic of the area and not of the particular period studied, as has been observed in other areas of basaltic volcanism, and could be used to establish any unusual seismicity that could be related to impending volcanic activity.

  11. La supuesta basílica de San Vicente en Córdoba: de mito histórico a obstinación historiográfica

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    Arce-Sainz, Fernando

    2015-06-01

    Full Text Available Underneath the Great-Mosque of Cordoba, there are some archaeological remains which have been the origin of several historiographical debates. The core of these debates was the idea that there were previous Christian buildings in the site later demolished to make room for the Umayyad mosque. However, the documented church of Saint Vincent, for the astonishment of many, did not appear in the excavations made in the 1930s. Much later, set aside the myth, but never truly forgotten, the idea that there might have been a full episcopal complex suceeded the other. Recent historigraphical developments are building new interpretations upon an archaeological evidence, that drove archaeologists, in the past, to deny definitively the presence of these ecclesiastical premises. This article argues what others have already stated: that according to the present archaeological knowledge, no evidence shows that there were previous Christian buildings under the Umayyad mosque. In terms of our conclusions, the article is not original. The main aim of this contribution is to offer a new and neccesary contextualizacion of textual and archaeological interpretations of emphirical data.Bajo el suelo de la mezquita aljama de Córdoba hay restos materiales en torno a los cuales se han desarrollado discursos históricos cuyo punto de partida es admitir que, en ese solar, se levantaron con anterioridad establecimientos religiosos cristianos que fueron demolidos para dejar espacio al oratorio musulmán impulsado por los omeyas. Primero fue la legendaria y literaria iglesia de San Vicente, que ante el asombro de muchos no se materializó tras las excavaciones de los años 30. Décadas después, arrinconado el mito pero nunca olvidado, el paisaje urbano previo a la mezquita se ha convertido en un complejo episcopal. Modelos historiográficos en boga están permitiendo nuevas interpretaciones de unos materiales arqueológicos que, en su momento, llevaron a los excavadores a

  12. The 1793 eruption of San Martín Tuxtla volcano, Veracruz, Mexico

    Science.gov (United States)

    Espíndola, J. M.; Zamora-Camacho, A.; Godinez, M. L.; Schaaf, P.; Rodríguez, S. R.

    2010-11-01

    San Martín Tuxtla (N18.562°; W95.199°, 1659 masl) is a basaltic volcano located in southern Veracruz, a Mexican State bordering the Gulf of Mexico. It rises in a volcanic field strewn with monogenetic volcanic cones, maars and three other large volcanoes mostly dormant since the late Pliocene: Santa Marta, San Martín Pajapan and Cerro El Vigía. The latest eruptive event of San Martín occurred in 1793 and was described by Don José Mariano Moziño, a naturalist under the commission of the Viceroy of the then New Spain. In this work we present results of the study of this eruption based on historical accounts and field observations. We identified an ash deposit around the volcano related to the 1793 eruption, mapped its distribution and determined its granulometric, petrographic and geochemical characteristics. These studies suggest that the volcano began its activity with explosive phreatomagmatic explosions, which were followed by Strombolian activity; this period lasting from March to October 1793. The activity continued with an effusive phase that lasted probably 2 years. The eruption covered an area of about 480 km 2 with at least 1 cm of ash; the fines reaching distances greater than 300 km from the crater. A total mass of about 2.5 × 10 14 g was ejected and the volcanic columns probably reached altitudes of the order of 10 km during the most explosive phases. The lava emitted formed a coulee that descended the northern flank of the volcano and has an approximate volume of 2.0 × 10 7 m 3.

  13. Central nervous system tuberculosis in children: review of 35 cases at the Hospital Universitario San Vicente de Paúl in Medellín, Colombia.1997-2004. Meningoencefalitis tuberculosa en niños: Revisión de 35 casos en el Hospital Universitario San Vicente de Paúl en Medellín, Colombia. 1997-2004

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    José William Cornejo Ochoa

    2005-04-01

    Full Text Available Objetive. To document the clinical and diagnostic features and to explore factors associated with central nervous system tuberculosis at the “Hospital San Vicente de Paúl (HUSVP” in Medellín-Colombia. Patients and methods. Review of the patient’s records to obtain information on demographic data, medical history, clinical manifestations, laboratory results, treatment and complications of 35 children with central nervous system tuberculosis admitted to the hospital between July 1997 and July 2004. Results. Of the 35 patients, 20 were males and 15 females. Mean age was 3.7 years. Thirty (85.7% patients were in stage III of the disease and 5 (14.3% in stage II. A symptomatic respiratory close contact was documented in 19 cases (54.3%. Malnutrition was present in 18 patients (51.4%. Fever was present in 88.6%, vomiting in 62.9%, consciousness alteration in 80%, and seizures in 51.4%. Mean duration of symptoms was 10 days. Physical examination revealed meningeal signs in 77%, movement disorders in 31.4%, stupor or coma in 82.9%, hemiparesis in 60% and fundoscopic abnormalities in 31.4%. Objetivo: documentar los rasgos clínicos y diagnósticos y explorar los factores asociados con la muerte de niños con meningoencefalitis tuberculosa (MT en el Hospital Universitario San Vicente de Paúl, Medellín, Colombia. Método: revisión de las historias clínicas para obtener los datos demográficos, clínicos, de laboratorio, de tratamiento y de las complicaciones de 35 niños con tuberculosis del sistema nervioso central, entre julio de 1997 y julio de 2004. Resultados: veinte de los 35 pacientes eran niños y 15 niñas. La edad promedio era 3.7 años; 30 (85.7% estaban en el estadio III de la enfermedad y 5 (14.3%, en el estadio II. Se documentó un contacto sintomático respiratorio en 19 casos (54.3%. Diez y ocho pacientes (51.4% estaban desnutridos. Hubo fiebre en 88.6%, vómito en 62.9%, alteración de la conciencia en 80% y convulsiones en 51

  14. The anticoagulation clinic of the hospital Universitario San Vicente de Paúl: demography, effectiveness and complications La clínica de anticoagulación del Hospital Universitario San Vicente de Paúl: demografía, efectividad y complicaciones

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    Luis Ignacio Tobón Acosta

    2004-02-01

    Full Text Available The use of oral anticoagulation therapy is more common every day. There is increasing evidence of better outcome in patients when anticoagulation is handled by anticoagulation clinics or services. This systemic managing has proved in that therapeutical range results in clinical improvement and decrease of hemorrhage, thrombosis and the use of medical resources. Even more, there are less hospitalizations and visits to the Emergency Department. The San Vicente of Paúl Hospital (HUSVP for it’s initials in Spanish has an anticoagulation clinic functioning for over twenty years, but until now, there has been no work concerning it’s results and benefits. Our task is to describe the demographic characteristics, indications and behavior of the antithrombotic therapy of those patients adscript and active in the clinic of the mentioned Hospital until December 2002. 139 patients were found, 57.6% were women and 42.2% men; the average age was 64 years; and the health system coverage was entail in 55.4% of the patients, subsided in 26.6% and contributive 18%. The most common anticoagulation indications were atrial fibrillation (40%, stroke (26% y hypercoagulability states (20%. The registered patients had a therapeutical range time of 41% with an annual control average of 4.5 times. Complications were present in 16% of the patients. This study was able to characterize the HUSVP anticoagulation clinic in its demographic variables, relevancy indications and co-morbid associated diseases. As well, some standardized parameters were evaluated in order to be compared with other clinics in the world. El uso de la terapia con anticoagulantes orales es cada vez más frecuente. Hay evidencia creciente de la mejoría de resultados cuando la aNticoagulación es manejada por servicios o clínicas de anticoagulación. Este manejo sistemático se traduce en optimización del rango terapéutico y disminución de hemorragias, de trombosis y del uso de recursos m

  15. Epidemiologic and clinical profiles of bone and joint tuberculosis: observational study at hospital Universitario San Vicente de Paul, Medellín, Colombia, 1994-2004. Perfiles epidemiológico y clínico de la tuberculosis osteoarticular: estudio observacional en el Hospital Universitario San Vicente de Paúl, de Medellín, 1994-2004

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    Jorge Eduardo López Valencia

    2005-03-01

    Full Text Available An observational, retrospective study was performed at Hospital Universitario San Vicente de Paúl, in Medellín, Colombia, based on the clinical records of patients with bone and joint tuberculosis between January 1994 and December 2004; based on the findings, epidemiological, clinical, laboratory and therapeutic characteristics of 47 patients are described. These patients represented 3.4% of the total of tuberculosis cases found in this hospital during the studied period; 35 had spinal tuberculosis and in 12 the disease affected other bones; a history of pulmonary tuberculosis was found in only 7 patients; 23 were males and 24, females; their ages were between 1 and 71 years; 18 were younger than 12 years; cultures for Mycobacterium tuberculosis were positive in 14 patients (29.8% and biopsies were consistent with tuberculosis in 26 (55.3%. Eleven of the 12 patients with extraspinal disease had the radiological findings of Phemisther. Predominant symptoms of spinal tuberculosis were: pain, neurological manifestations and deformity, mostly kyphosis. From the radiological point of view, these patients had destruction of vertebral bodies and decrease of articular space in addition to osteopenia. Tomography was performed in 19 patients and revealed medullary compression in 5 of them; magnetic resonance carried out in 17 patients showed medullary compression in 8 and paravertebral abscesses in the 17. Results are discussed on the basis of reports from the world medical literature and in the context of the health situation of the Colombian population. Se llevó a cabo un estudio observacional retrospectivo en el Hospital Universitario San Vicente de Paúl, de Medellín, basado en la revisión de las historias de pacientes con tuberculosis osteoarticular, entre enero de 1994 y diciembre de 2004; con base en los hallazgos se describen las características demográficas, clínicas, de laboratorio y de tratamiento de 47 pacientes que correspondían al 3

  16. Valoration of burned body surface; area in patients of San Vicente de Paúl University Hospital, Medellín, 2004 Evaluación de la superficie corporal quemada en pacientes del Hospital Universitario San Vicente de Paúl, Medellín, 2004

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    Marco Antonio Hoyos Franco

    2007-03-01

    Full Text Available INTRODUCTION: The estimation of the burned surface area has a huge importance for the acute management and prognosis of the burn victim It has been revised the different methods available for the assessment of the burn extent and some resuscitation basic concepts. MATERIALS AND METHODS: A retrospective descriptive study was made based on the information took from medical records of patients from the burn unit of the San Vicente de Paul University Hospital in Medellín (Col during 2004. The initial diagnosis of the burn extension made by the remittent clinician was compared with the ones made by experience clinicians at the emergency room and by the plastic surgeon at the Burn Unit. The results obtained were processed with the package Statistic 6.0 (Stafsoft Inc and it was considered significant a p value < 0.05. The variables are presented as absolute values and with their respective percentages. RESULTS AND CONCLUSIONS: There were 329 attended patients. 60% of them had mistaken or incomplete diagnosis, and 39.3% of the diagnosis made at our emergency room were incomplete or incorrect. We found more frequently overestimation than underestimation of the burn surface area. In most of the cases mistakes were made that modified the burn category (mild, moderate, and severe. It is necessary to improve basic knowledge about burn care in the inexperience clinicians. INTRODUCCIÓN: la evaluación de la superficie corporal quemada tiene gran importancia para el tratamiento inicial y el pronóstico del paciente quemado. Se revisan los diferentes métodos para evaluar la superficie corporal quemada y algunos conceptos básicos de reanimación. MATERIALES Y MÉTODOS: se realizó un estudio descriptivo, retrospectivo y transversal a partir de las historias clínicas de los pacientes quemados hospitalizados en el Hospital Universitario San Vicente de Paúl (HUSVP de Medellín durante el año 2004. Se compararon los diagnósticos de extensión quemada emitidos

  17. Hernia diafragmática congénita. Experiencia en el Hospital Universitario San Vicente de Paúl, Medellín, Colombia, 1999-2009 = Congenital diaphragmatic hernia. Experience at Hospital Universitario San Vicente of Paul, Medellín, Colombia 1999 to 2009

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    Arango Rave, María Elena

    2012-07-01

    Full Text Available Introducción: la hernia diafragmática congénita (HDC plantea un reto por la amplia variabilidad de presentación clínica, la falla respiratoria y la posibilidad de hipertensión pulmonar grave. El objetivo de esta revisión fue describir el tratamiento de la HDC y sus resultados, entre 1999 y 2009, en la Sección de Cirugía Infantil del Hospital Universitario San Vicente de Paúl, de Medellín.Materiales y métodos: se estudiaron en 36 pacientes variables socioeconómicas, tiempo de estabilización preoperatoria, tipo de tratamiento y sus resultados, complicaciones, tiempo de permanencia en la UCI, necesidad de soporte ventilatorio y duración de la estancia hospitalaria.Resultados: fue más frecuente la HDC izquierda y en hombres. Veintidós pacientes presentaron malformaciones asociadas. Se hizo tratamiento médico y quirúrgico en 31 pacientes. El tiempo de estabilización preoperatoria fue en promedio cuatro días. La mediana de días de ventilación mecánica fue cuatro, la de estancia en UCI, seis y la de estancia hospitalaria, 12,5. La sepsis fue la complicación más frecuente, en seis pacientes hubo infección del sitio operatorio y en igual número, secuelas. Murieron 10 pacientes; los factores asociados con la mortalidad fueron: inestabilidad hemodinámica, Apgar menor de 5, tratamiento exclusivamente médico, diagnóstico prenatal, uso de parche para la reparación y las malformaciones asociadas.

  18. Diffusive Soil Degassing of Radon and Carbon Dioxide at San Miguel Volcano, El Salvador, Central America

    Science.gov (United States)

    Lopez, D. L.; Olmos, R.; Cartagena, R.; Soriano, T.; Barahona, F.

    2001-12-01

    San Miguel volcano is located 15 km to the Southwest of San Miguel City (population ~300,000) and lies on the southern fault of the Central American graben at an intersection with NW-SE faults. The composition of San Miguel lavas varies from olivine-pyroxene basalts for the older lava flows to more andesitic compositions for the more recent products. This volcano have been degassing and having small ash emission since the late nineteen eighties. During December 1999 and January 2000, radon gas concentrations (pCi/l) in soils were measured using a Pylon AB5 radon monitor, and flux of CO2 (g/m2/day) was determined using the accumulation chamber method at 205 sampling stations. High gas emission inside the crater did not allow measurements to be taken in that region. CO2 fluxes throughout the soils of the volcanic edifice show low values compared to other active volcanoes of the world, suggesting that San Miguel is degassing preferentially throughout the summit region. CO2 fluxes range from less than 1 to 14 g/m2/day, with an average value of 5.6 g/m2/day. Radon concentrations range from 2 to 833 pCi/l with an average value of 110 pCi/l. Thoron concentrations range from 20 to 2178 pCi/l with an average value of 362 pCi/l. These values are comparable to radon concentrations found in other active volcanoes (e.g. Cerro Negro, Connor et al., 1996). CO2 flux, radon and thoron concentrations show higher values to the northwest and northeast faulted regions. Some anomalies seem to be related to the contact region between the older and more recent lava flows. Thoron/radon ratios show high anomalies aligning in the NW-SE direction where faulting also occurs. These results suggests that low permeability rocks forming the volcanic edifice of San Miguel volcano do not allow large fluxes of magmatic CO2 to be discharged throughout the soils. Higher permeability at faults and contacts allow slightly larger fluxes of CO2 and radon and thoron concentrations.

  19. On the origin of zebra textures in Mississippi Valley-Type Pb-Zn Deposits with a special emphasis on the San Vicente Mine, Peru

    Science.gov (United States)

    Kelka, Ulrich; Koehn, Daniel

    2014-05-01

    grain boundaries move according to a rate law based on dissolution-precipitation processes as a function of differences in surface energy. Layered distributions of particle densities are initially set as a background. With this simple simulation of grain growth influenced by particle distributions we show, that this process is able to develop structural patterns that are very similar to those present in the natural samples from the San Vicente Mine in Peru. References BONS P D, KOEHN D, and JESSELL W (2008) Microdynamic Simulation. Springer-Verlag Berlin Heidelberg FONTBONTé L (1993) Self-organization fabrics in carbonate-hosted ore deposits: the example of diagenetic crystallization rhythmites (DCRs), In: Current research in geology applied to ore deposits. Proceedings of the Second Biennial SGA Meeting, Granada, Spain, p. 11 -14 MERINO E, CANALS A, and FLECHTER R C (2006) Genesis of self-organized zebra textures in burial dolomites: Displacive veins, induced stress, and dolomitization. Geologica Acta, Vol. 4 No. 3, p. 383-393

  20. Tratamiento de los defectos congénitos de la pared abdominal (gastrosquisis y onfalocele en el Hospital Universitario San Vicente de Paúl, 1998-2006

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    Paula Jaramillo Gómez

    2008-11-01

    Full Text Available INTRODUCCIÓN: la gastrosquisis y el onfalocele son malformaciones neonatales de la pared abdominal que, a pesar de sus grandes diferencias, comparten el manifestarse por herniación de las vísceras intraabdominales a través de un defecto de la pared abdominal. Los niños con estas enfermedades se presentan como emergencias quirúrgicas que plantean un reto al cirujano tratante. Tienen una tasa de mortalidad que oscila entre 40 y 60% aun con el tratamiento apropiado y se asocian a un amplio rango de malformaciones, principalmente en los que tienen diagnóstico de onfalocele. El objetivo de la presente revisión retrospectiva fue describir el tratamiento y los resultados obtenidos en estos pacientes, entre 1998 y 2006, en el Servicio de Cirugía infantil del Hospital Universitario San Vicente de Paúl, de Medellín, Colombia. PACIENTES Y MÉTODOS: se evaluaron todos los pacientes que ingresaron al Servicio de Cirugía infantil del HUSVP con diagnóstico de gastrosquisis u onfalocele, entre el 1 de enero de 1998 y el 31 de diciembre de 2006. Se definió el tipo de tratamiento que se les realizó y, de acuerdo con este, se revisaron los resultados; las complicaciones posquirúrgicas, tales como la infección del sitio operatorio, evisceración, sepsis, íleus e hipertensión intraabdominal; el tiempo de inicio de la vía oral y de la nutrición parenteral total (NPT; la duración de la estancia en la unidad de cuidados intensivos y en el hospital. RESULTADOS: se identificaron 55 pacientes, 32 con gastrosquisis y 23 con onfalocele, todos ellos tratados quirúrgicamente. El tipo más frecuente de cirugía fue el cierre primario (56,4%; en cuanto al cierre por etapas, el procedimiento más utilizado fue el silo en 21,8% de los niños. En el 75,9% de los pacientes se presentó alguna complicación, más frecuentemente la sepsis, y cuando se evaluaron las complicaciones asociadas al procedimiento quirúrgico, el porcentaje fue similar para el cierre

  1. Uso de la citometría de flujo en la caracterización de las leucemias agudas de pacientes del Hospital San Vicente de Paúl y la Clínica León XIII

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    Lía Upegui

    2001-04-01

    Full Text Available

    Las leucemias agudas son neoplasias hematológicas frecuentes en niños y la clasificación adecuada de un caso es importante para dar  un buen tratamiento (1. La manera más eficaz de clasificar las leucemias agudas es la inmunofenotipificación por medio de citometría de flujo, que identifica las células leucémicas con base en sus antígenos de superficie (2. En el Hospital Universitario San Vicente de Paúl no se ha estandarizado la citometría con fines diagnósticos, aunque existe consenso general sobre su importancia y necesidad (3.

     

     

  2. Uso de la citometría de flujo en la caracterización de las leucemias agudas de pacientes del Hospital San Vicente de Paúl y la Clínica León XIII

    OpenAIRE

    Lía Upegui; Idabelly Betancur; Natalia Olaya

    2001-01-01

    Las leucemias agudas son neoplasias hematológicas frecuentes en niños y la clasificación adecuada de un caso es importante para dar  un buen tratamiento (1). La manera más eficaz de clasificar las leucemias agudas es la inmunofenotipificación por medio de citometría de flujo, que identifica las células leucémicas con base en sus antígenos de superficie (2). En el Hospital Universitario San Vicente de Paúl no se ha estandarizado la citometría con fines diagnósticos, aunque existe cons...

  3. Criterios del sentido de movimiento en espejos de fricción: clasificación y aplicación a los granitos cizallados de la Sierra de San Vicente (Sierra de Gredos

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    Doblas, M.

    1987-04-01

    Full Text Available In this paper, we first classify the different shearing sense criteria on slickensided surfaces, obtaining thus a practical guide both for the field, and the laboratory. We then apply some of these criteria to the C shearing planes present in the San Vicente deformed granites. These planar structures in granites, which have not been used yet for the study of slickensided surfaces, seem ideal for verifying and/or proposing criteria, as their shearing senses are already known from previous studies (Doblas et al., 1983, Doblas 1985. Some of these features are investigated here under the scanning electron microscope. Apart from indicative of the shearing senses, these structures also reveal interesting characteristics of formation of the C planes.En este trabajo establecemos primeramente una clasificación de los diferentes criterios para la deducción del sentido de movimiento en espejos de fricción, obteniendo así una guía práctica de utilización en el campo o en el laboratorio, inexistente hasta ahora. En segundo lugar, aplicamos algunos de estos criterios a los planos de cizallamiento C de los granitos deformados de la Sierra de San Vicente. Estas estructuras planares en granitos, que hasta ahora no se habían empleado en estudios de espejos de fricción, resultan muy útiles para comprobar y/o proponer criterios, ya que sus sentidos de movimiento se conocen en nuestra zona por investigaciones anteriores (Doblas et al., 1983, Doblas 1985. Una innovación que aportamos aquí, es la utilización del microscopio electrónico de barrido para el estudio de estas estructuras. Las estructuras observadas en los planos C, además de indicarnos el sentido del movimiento, revelan también interesantes características genéticas de los mismos.

  4. Incidencia de insuficiencia renal aguda en niños hospitalizados por quemaduras en el Hospital Universitario San Vicente de Paúl de Medellín, 2007-2008

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    José William Cornejo Ochoa

    2008-11-01

    Full Text Available INTRODUCCIÓN: las quemaduras en niños se han identificado como causa principal de trauma y su asociación con insuficiencia renal aguda es una de las complicaciones más temidas debido a su alta tasa de mortalidad. OBJETIVO: establecer la incidencia de insuficiencia renal aguda y describir algunos de los factores asociados en niños quemados menores de 18 años atendidos en el Hospital Universitario San Vicente de Paúl de Medellín. MATERIALES Y MÉTODOS: estudio de cohorte prospectivo y descriptivo en pacientes menores de 18 años con quemaduras superiores al 30% de la superficie corporal total que ingresaron al Servicio de quemados del Hospital Universitario San Vicente de Paúl entre abril del 2007 y febrero 2008. RESULTADOS: en total se incluyeron 25 pacientes en el estudio y de acuerdo con los criterios utilizados el 64% desarrollaron insuficiencia renal aguda y presentaron una tasa de mortalidad del 12,5% mientras que en el grupo sin insuficiencia renal aguda no se presentaron muertes. No se encontraron diferencias significativas entre los dos grupos en ninguna de las variables, lo que podría deberse al tamaño de la muestra; sin embargo, la lesión por inhalación se vislumbra como un factor importante de riesgo. CONCLUSIONES: la insuficiencia renal aguda en pacientes quemados es una complicación muy frecuente y se la debe buscar activamente y hacerles un seguimiento estrecho a los pacientes. Hacen falta más estudios en Medellín para determinar los factores de riesgo asociados a esta complicación.

  5. a Reconstruction of the 1793 Eruption of San Martin Tuxtla Volcano, Veracruz, Mexico

    Science.gov (United States)

    Espindola, J.; Zamora-Camacho, A.; Godinez, L.

    2013-05-01

    San Martin Volcano is located in the State of Veracruz, Eastern Mexico (18.572N, 95.169W, 1650 masl). The last eruption of this volcano occurred in 1793. The activity, which was documented lasted for several months and produced thick ashfall deposits in its vicinity. The blasts were heard in the coast of Tampico some 500km NW from the volcano. There are also reports of noticeable ashfall at distances as far as 200 Km from the crater. No casualties from the eruption were reported but the economic and other human activities were greatly perturbed. The center of emission eruption was a cinder cone located within the 500 wide crater in the summit of the volcano. We present isopach maps of the airfall deposits from this eruption. The 5cm isopach covers an area roughly 200 Km2 with downwind axis towards the W-SW. Based on this information we reconstructed some of the characteristics of the eruption by fitting the theoretical isopachs obtained from the well known model of ash deposition by Suzuki to the observed isopachs. The estimated height of the eruptive column is of the order of 10 km for a mass erupted of 0.5 cubic km. We used wind data from the nearby meteorological station of the city of Veracruz.

  6. Vicente del Bosque: el carisma con mesura

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    Antonio Sánchez Pato

    2013-01-01

    Full Text Available La vida del seleccionador español de fútbol, D. Vicente del Bosque, constituye un ejemplo de dedicación al deporte rey. En este ensayo haremos una alabanza de los principales méritos deportivos, docentes y personales que atesora, con el objetivo de servir de laudatio1 con motivo de su investidura como doctor honoris causa por la Universidad Católica San Antonio de Murcia.

  7. The effect of physical and chemical parameters on the macroinfaunal community structure of San Vicente bay, Chile Efectos de parámetros físicos y químicos en la estructura comunitaria de la macroinfauna en la bahía de San Vicente, Chile

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    ROCÍO A. SIEMENS

    2001-06-01

    Full Text Available San Vicente bay is a heavily industrialised bay located in central Chile, which has a sand beach extending from an area of recreational use in the south to an area of industrial use and discharge in the north. A survey of the macrofauna in the intertidal zone revealed a non-homogeneous distribution; a maximum of five invertebrate species were found with all five only occurring in one of six transects down the beach. The density ranged from 0 to 188 individuals m-2, with the highest density at the recreational end. The most common species, Emerita analoga (Stimpson, was chosen to study the macrofaunal response to beach morphodynamics, physicochemical parameters and metal concentrations. The E. analoga distribution was not significantly correlated with the results of the physicochemical analyses of interstitial water (pH, temperature, salinity and oxygen concentrations. However, oxygen concentrations decreased to 3 ml O2 l-1 in the lower intertidal closest to the recreational area where the highest numbers of intertidal macrofauna were observed. Analyses of 12 metals in the sediments showed three distinct distribution patterns across the beach in which the metals could be classified: a representative metal was chosen for each distribution. The concentration of tin ranged from 3.4 to 11.58 mg g-1DW sediment, representing the `wave' pattern. The concentration of cadmium ranged from 0 to 0.23 mg g-1DW sediment, representing the `banded' pattern. The concentration of chromium ranged from 1.97 to 3.18 mg g-1DW sediment, representing the `intermediate' pattern of metal distribution. The E. analoga distribution was not significantly correlated with the concentrations of any single metal, although multivariate statistical analysis indicated that Sn and Fe had the largest negative effect and Mn had the largest positive one. The distribution of E. analoga across the sandy beach of San Vicente bay was significantly correlated with the relative tidal range

  8. Artritis séptica no gonocóccica en el Hospital Universitario San Vicente de Paúl (1984-1992 Non-Gonococcal septic arthritis at Hospital Universitario San Vicente de Paúl, Medellín, Colombia, 1984-1992

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    Oscar Uribe

    1994-01-01

    Full Text Available La artritis séptica no gonocóccica es una urgencia en reumatología. Su diagnóstico y tratamiento tempranos evitan deformidades e incapacidades articulares. Se realizó un estudio retrospectivo de esta forma de artritis, en pacientes del Hospital Universitario San Vicente de Paúl, de MedeIlín, entre 1984 y 1992, para evaluar su forma de presentación, los factores predisponentes, el agente causal, las articulaciones comprometIdas y las complicaciones. De una revisión de 302 historias clínicas de pacientes mayores de 12 años con presunción diagnóstica de artritis séptica se hallaron 54 con aislamiento de la bacteria causal a partir del líquido articular, los hemocultivos O ambos; dichos pacientes con etiología comprobada motivan este informe. El grupo estuvo formado por 38 hombres (70.4% y 16 mujeres (29.6% cuya edad promedio era 27 años. Predominó Staphylococcus aureus (43 pacientes; 79.6% seguido por bacilos Gram negativos (9 pacientes; 16.7%; hubo dos casos debidos a estreptococos (3.7%. La enfermedad fue monoarticular en 49 casos (90.7% y biarticular en 5. Comprometió, en su orden, la rodilla (30 casos; 55.6%, la cadera (19; 35.2%, el tobillo y el hombro (tres casos cada uno, la articulación sacrollíaca (2 casos, la metacarpofalánglca y la esternoclavicular (un caso de cada una. Como complicaciones se hallaron 13 casos de sepsis, 13 de osteomielitis, 6 de bronconeumonía, 3 de insuficiencia renal aguda, 1 de coagulación intravascular diseminada y 1 de pericarditis. Este total de 37 complicaciones afectó a 23 pacientes. Ningún paciente falleció. En cuanto a los factores predisponentes y las enfermedades subyacentes se detectaron los siguientes: infección de tejidos blandos en 9 pacientes, endometritis en 3, LES o linfomano Hodgkin en 2 pacientes cada uno, artritis reumatoidea O inyección intraarticular en un paciente cada una. La consulta tuvo lugar después de la primera semana de evolución en 43 pacientes (79.6%.

  9. Characterization of diabetic patients undergoing dialysis at hospital Universitario San Vicente de Paúl, in Medellín, Colombia Características de los pacientes con diagnóstico de diabetes mellitus en diálisis en la Unidad Renal del Hospital Universitario San Vicente de Paúl, Medellín-Colombia

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    Alberto Villegas Perrasse

    2005-04-01

    Full Text Available Introduction: Worldwide, diabetes mellitus (DM is one of the main causes of renal insufficiency. However, very few Latin American and Colombian studies on the subject have been published. Dialyzed diabetic patients suffer from complications more frequently than their non-diabetic counterparts. Besides, many complications associated with DM are already present before the beginning of dialysis. Purpose: To characterize diabetic patients undergoing dialysis at an university hospital in Medellín, Colombia. Methodology: A cross sectional descriptive study was carried out including all patients registered in the dialysis program on May 31, 2003 at the Renal Unit of Hospital Universitario San Vicente de Paúl. A semistructured questionnaire was used to collect clinical and laboratory information from the patient´s records. Results: Out of 396 dialysis patients, 102 (25.7% had the diagnosis of diabetic nephropathy which, in 15.3% of them, had been made less than five years before the beginning of this study. Two hundred and eighteen patients were on hemodialysis and 178, on peritoneal dialysis; 65 of the former (29.8% and 37 of the latter (20.8% were diabetic. Complete information was obtained from 64 and 34, respectively, for a total of 98 patients (57 men [58.2%] and 41 women [41.8%]. Their average time on dialysis was 1.53 years. DM type 2 was diagnosed in 88 patients (89.8%. High blood pressure was found in 92 patients (93.9%, overweight in 47 (47.9%, total cholesterol above 180 mg/dL in 58.2%, triglycerides above 150 mg/dL in 55.1%, retinopathy in 79.6%, total or partial blindness due to DM in 25.5%, neuropathy in 62.2%, and cardiovascular disease in 84.6%. A majority of patients were not fulfilling self-care recommendations. Conclusions: Diabetic nephropathy, most frequently due to type 2 DM, is the main cause of renal insufficiency at our Renal Unit. Diagnosis is often delayed and complications are the rule. It would be important to establish

  10. Chaparrastique (San Mighel) Volcano Eruptions since Dec. 29th, 2013, El Salvador

    Science.gov (United States)

    Martinez-Hackert, B.; Bajo, J. V.; Escobar, D.; Gutierrez, E.

    2015-12-01

    The December 29th, 2013 eruption of Chaparrastique (San Miguel) volcano in El Salvador came as a surprise and was the first of several small eruptions in the past two years. They came after many years of preceeding earthquake swarms and significant degassing. Being the second volcano to erupt in El Salvador in less than ten years, it caused grave concern for the population of the country. Although they were not large eruptions (VEI 2), the materials were widespread and caused deposits of volcanic tephra as far at the capital San Salvador and closed the airports in the vecinity for a couple of days. This is a summary of the research, mitigation and services that were done days after the first eruption on December 29, 2013 and the follwing months. In conjunction with the team of the Direccion General del Observatorio Ambiental from the Ministerio de Medio Ambiente y Recursos Naturales possible first response strategies were discussed and decided to obtain results that could be quickly put in place to mitigate and decide on actions such as evacuations or relocations of people living in volcano related high-risk hazard areas. Collection of samples, mapping and measurements of the volcanic tephra in the field together with Digital Globe and areal photography after the event, allowed identification of four different volcanic products that can be correlated to the opening of the vent and ending in the eruption of juvenile materials of basaltic to trachybasaltic composition, and the production of a lahar hazard map based on LaharZ.

  11. Adherencia a la Guía de manejo de la paciente con síndrome hipertensivo asociado a la gestación, en el Hospital Universitario San Vicente de Paúl, Medellín, Colombia

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    John Jairo Zuleta Tobón

    2008-11-01

    Full Text Available INTRODUCCIÓN: la implementación de guías de manejo como apoyo al equipo médico optimiza los recursos y disminuye las complicaciones en el tratamiento de pacientes con una enfermedad determinada. Aunque las guías se conocen y se elaboran en todo el mundo, su uso es discutible, la adherencia es variable y el impacto depende de la adherencia. Su uso se ha extendido mundialmente, por lo que existen guías para diferentes enfermedades, las cuales han sido analizadas desde diversos puntos de su desarrollo, incluyendo el soporte de la evidencia existente, la adherencia dentro de los servicios de salud y, por último, el impacto de su uso sobre la morbilidad y la mortalidad en un grupo específico de la población. El Hospital Universitario San Vicente de Paúl diseñó su primera Guía de Manejo del Síndrome Hipertensivo asociado al embarazo hace 20 años y su última actualización fue en agosto de 2005. Este síndrome continúa siendo una de las principales causas de morbilidad y mortalidad maternas tanto local como nacionalmente, con indicadores superiores a los de otros países, y comparándolo con países con igual desarrollo económico, razón por la cual es pertinente contar con esta guía en las instituciones de nuestro país, como una herramienta para el cumplimiento de las metas planteadas por el Ministerio de Protección Social para la disminución de la morbilidad y mortalidad maternas. Sin embargo, esta guía no ha sido objeto de análisis. Para medir su impacto sobre los indicadores, es imprescindible conocer primero la adherencia a las recomendaciones de la guía. En un segundo paso podrá corroborarse el efecto que tienen las recomendaciones sobre la evolución de la enfermedad. OBJETIVO: evaluar la adherencia a las recomendaciones de la Guía de Manejo del Sindrome Hipertensivo Asociado a la Gestación del Hospital Universitario San Vicente de Paúl. MATERIALES Y MÉTODOS: estudio descriptivo, retrospectivo. CONTEXTO: Hospital

  12. Emission of gas and atmospheric dispersion of SO2 during the December 2013 eruption at San Miguel volcano (El Salvador)

    Science.gov (United States)

    Salerno, Giuseppe G.; Granieri, Domenico; Liuzzo, Marco; La Spina, Alessandro; Giuffrida, Giovanni B.; Caltabiano, Tommaso; Giudice, Gaetano; Gutierrez, Eduardo; Montalvo, Francisco; Burton, Michael; Papale, Paolo

    2016-04-01

    San Miguel volcano, also known as Chaparrastique, is a basaltic volcano along the Central American Volcanic Arc (CAVA). Volcanism is induced by the convergence of the Cocos Plate underneath the Caribbean Plate, along a 1200-km arc, extending from Guatemala to Costa Rica and parallel to the Central American Trench. The volcano is located in the eastern part of El Salvador, in proximity to the large communities of San Miguel, San Rafael Oriente, and San Jorge. Approximately 70,000 residents, mostly farmers, live around the crater and the city of San Miguel, the second largest city of El Salvador, ten km from the summit, has a population of ~180,000 inhabitants. The Pan-American and Coastal highways cross the north and south flanks of the volcano.San Miguel volcano has produced modest eruptions, with at least 28 VEI 1-2 events between 1699 and 1967 (datafrom Smithsonian Institution http://www.volcano.si.edu/volcano.cfm?vn=343100). It is characterized by visible milddegassing from a summit vent and fumarole field, and by intermittent lava flows and Strombolian activity. Since the last vigorous fire fountaining of 1976, San Miguel has only experienced small steam explosions and gas emissions, minor ash fall and rock avalanches. On 29 December 2013 the volcano erupted producing an eruption that has been classified as VEI 2. While eruptions tend to be low-VEI, the presence of major routes and the dense population in the surrounding of the volcano increases the risk that weak explosions with gas and/or ash emission may pose. In this study, we present the first inventory of SO2, CO2, HCl, and HF emission rates on San Miguel volcano, and an analysis of the hazard from volcanogenic SO2 discharged before, during, and after the December 2013 eruption. SO2 was chosen as it is amongst the most critical volcanogenic pollutants, which may cause acute and chronicle disease to humans. Data were gathered by the geochemical monitoring network managed by the Ministerio de Medio Ambiente

  13. Neurocisticercosis en niños: Hospital Universitario San Vicente de Paúl, Medellín 1989-1996 Neurocysticercosis in children: experience in Medellín, Colombia 1989-1996

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    José William Cornejo Ochoa

    1997-03-01

    Full Text Available Se hace un estudio retrospectivo de las historias cínicas de los menores de 18 años con diagnóstico de egreso de neurocisticercosis, del Hospital Universitario San Vicente de Paúl, de Medellín (HUSVP durante el período 1989 a 1996. Se encontraron 16 pacientes: Trece mujeres y 3 hombres, con un promedio de edad de 11 años. Los motivos de consulta mas frecuentes fueron convulsiones (68.8%, cefalea (62.5% y alteraciones visuales (37.5%. La evolución de los síntomas fue menor de tres meses en el 81% de los casos. Los diagnósticos sindromáticos mas frecuentes fueron los síndromes convulsivo (68.8% y de hipertensión endocraneana (43.8%. La tomografía computarizada mostró lesiones parenquimatosas múltiples en 8 casos y únicas en 4. El tratamiento con albendazol (10 mg/kg/dla mejor6 la sintomatología en todos los casos; se emplearon corticoides en todos los pacientes que recibieron tratamiento antiparasitario. Las convulsiones se controlaron fácilmente con difenilhidantolna o carbamazepina. Neurocysticercosis in children. Experience in Medellín, Colombia, 1989-1996 This is a retrospective clinical study of neurocisticercosis in patients aged 18 years or less, at Hospital Universitario San Vicente de Paul, in Medellln, Colombia, during the period 1989-1996. There were 16 patients, 13 girls and 3 boys; average age was 11 years. The main complaints were: Seizures (68.8%, headache (62.5% and visual disturbances (37.5%. Evolution of symptoms was less than three months in 81% of the patients. The most frequent syndromatic diagnoses were: Convulsive (68.8% and intracraneal hypertension syndromes (43.8%. Computed tomography revealed intraparenchimal multiple lesions in 8 cases and solitary lesions in 4 cases. Treatment with albendazole (10 mg/kg/day improved symptoms in every patient; children treated with antiparasitic drugs also received corticosteroids for 7 to 14 days. Seizures were easily controlled with anticonvulsivants such as

  14. The unrest of the San Miguel volcano (El Salvador, Central America): installation of the monitoring network and observed volcano-tectonic ground deformation

    Science.gov (United States)

    Bonforte, Alessandro; Hernandez, Douglas Antonio; Gutiérrez, Eduardo; Handal, Louis; Polío, Cecilia; Rapisarda, Salvatore; Scarlato, Piergiorgio

    2016-08-01

    On 29 December 2013, the Chaparrastique volcano in El Salvador, close to the town of San Miguel, erupted suddenly with explosive force, forming a column more than 9 km high and projecting ballistic projectiles as far as 3 km away. Pyroclastic density currents flowed to the north-northwest side of the volcano, while tephras were dispersed northwest and north-northeast. This sudden eruption prompted the local Ministry of Environment to request cooperation with Italian scientists in order to improve the monitoring of the volcano during this unrest. A joint force, made up of an Italian team from the Istituto Nazionale di Geofisica e Vulcanologia and a local team from the Ministerio de Medio Ambiente y Recursos Naturales, was organized to enhance the volcanological, geophysical and geochemical monitoring system to study the evolution of the phenomenon during the crisis. The joint team quickly installed a multiparametric mobile network comprising seismic, geodetic and geochemical sensors (designed to cover all the volcano flanks from the lowest to the highest possible altitudes) and a thermal camera. To simplify the logistics for a rapid installation and for security reasons, some sensors were colocated into multiparametric stations. Here, we describe the prompt design and installation of the geodetic monitoring network, the processing and results. The installation of a new ground deformation network can be considered an important result by itself, while the detection of some crucial deforming areas is very significant information, useful for dealing with future threats and for further studies on this poorly monitored volcano.

  15. Causas de enfermedad renal crónica en niños atendidos en el Servicio de Nefrología Pediátrica del Hospital Universitario San Vicente de Paúl, de Medellín, Colombia, entre 1960 y 2010 = Etiology of chronic kidney disease: fifty-year experience (1960-2010 at the Pediatric Nephrology Service, Hospital Universitario San Vicente de Paúl (Medellín, Colombia

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    Vanegas Ruiz, Juan José

    2011-12-01

    Full Text Available La insuficiencia renal crónica es el resultado del deterioro progresivo e irreversible de la función renal, que genera incapacidad del riñón para remover los productos de desecho y mantener el equilibrio ácido básico. El objetivo de este estudio fue identificar las causas de insuficiencia renal crónica en nuestros pacientes y su importancia relativa en este desenlace. Se hizo un estudio descriptivo retrospectivo de corte transversal, basado en la revisión de 367 registros pertenecien­tes al Servicio de Nefrología Infantil, de pacientes con diagnóstico de insuficiencia renal crónica (IRC, que acudieron al Servicio de Consulta Externa del Hospital Universitario San Vicente de Paúl, de Medellín, entre el 01 de enero de 1960 y el 30 de agosto de 2010. De los 367 pacientes, 199 (54,2% fueron hombres y 168 (45,8%, mujeres; las enfermedades predominantes como causa de la IRC fueron: reflujo vésico-ureteral (37,1%, hidronefrosis (24,0%, valvas de la uretra posterior (13,4%, glomerulonefritis aguda (12,3%, síndrome nefrótico (11,2% e hipoplasia renal (9,3%.

  16. Management of abdominal wall defects (gastroschisis and omphalocele at Hospital Universitario San Vicente de Paúl, in Medellín, Colombia, 1998-2006 Tratamiento de los defectos de la pared abdominal (gastrosquisis y onfalocele en el Hospital Universitario San Vicente de Paúl, Medellín, 1998-2006

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    Mirian Natalia Herrera Toro

    2010-08-01

    Full Text Available

    Introduction: Gastroschisis and omphalocele are neonatal malformations of the abdominal wall. Despite their great differences, both are severe diseases characterized by herniation of viscera through the defect in the abdominal wall. Children with these defects present as surgical emergencies that pose a difficult challenge to the attending surgeon. Even with appropriate management, the mortality rate is between 20-40%. Omphalocele and, to a lesser degree gastroschisis, are associated with a wide range of malformations.

    Objective: The aim of this retrospective review was to describe the management of children with gastroschisis or omphalocele, and the results obtained with it, at the

    Pediatric Surgery Section, Hospital Universitario San Vicente de Paúl, in Medellin, Colombia.

    Volcanoes

    Science.gov (United States)

    ... or more from a volcano. Before a Volcanic Eruption The following are things you can do to ... in case of an emergency. During a Volcanic Eruption Follow the evacuation order issued by authorities and ...

  17. Leucemia linfoide aguda: estudio citogenético en niños atendidos en el Hospital Universitario San Vicente de Paúl de Medellín en el período 1998-2001

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    Juan Carlos Herrera Patiño

    2002-04-01

    Full Text Available Las investigaciones citogenéticas en leucemia Linfoblástica Aguda (LLA permiten identificar alteraciones recurrentes específicas en los cromosomas y correlacionarlas con la información biológica. Además, contribuyen a la comprensión de los mecanismos de leucogénesis, como factores pronósticos independientes, y aportan bases para futuras investigaciones terapéuticas. Se analizaron las alteraciones cromosómicas adquiridas en la médula ósea de 44 niños (entre un mes y 14 años con LLA, diagnosticada clínica e histopatológicamente entre 1998 y 2001 en la Unidad de Hematología Infantil, Hospital San Vicente de Paúl, de Medellín, y cuyas muestras de médula ósea fueron procesadas y analizadas en la Unidad de Genética Médica, de la Facultad de Medicina de la Universidad de Antioquia. El estudio reveló que 17 pacientes (41,5% presentaban cariotipo normal y 24 (58,5% lo tenían anormal. De estos últimos 18 (75% tenían un mosaicismo cromosómico, 4 (16,7% exhibían cariotipos hiperdiploides y 2 (8.3% presentaban otras alteraciones cromosómicas. No se encontraron asociaciones significativas entre los tipos de leucemia (L1,L2,L3 y el cariotipo.

  18. Risk factors for accidents in children that consulted to the emergency unit of San Vicente de Púl Children's Hospital of Medellín, Colombia. December 1, 1998 - March 6, 1999 Factores de riesgo de accidentes en niños que consultaron al Policlínico Infantil de Medellín Diciembre 1 de 1998-marzo 6 de 1999

    OpenAIRE

    Julio César Correa Escobar; Humberto Ramírez Gómez; Claudia Mónica Neira Velásquez; Diana Patricia Medina Mesa; Olga Francisca Salazar Blanco; María Beatriz Mesa Restrepo

    2001-01-01

    A prospective descriptive study was made to identify the factors of risk for accidents in children smaller than 12 years that consulted for this cause to the Emergency Unit of San Vicente de Paul Children´s Hospital of Medellin, from December 1 of 1998 until March 6 of 1999. These factors were compared during a period of school vacations and one of academic activity of same duration. We included 1.185 patients. The distribution for sex was: 771 children (65%) and 414 girls (35%); 912 patients...

  19. Validación del cumplimiento de los criterios de habilitación en los estándares de oportunidad, accesibilidad y seguridad en el área de fisioterapia de la E.S.E Hospital San Vicente de Paul de la ciudad de Palmira en el período comprendido entre agosto de 2010 y mayo de 2011

    OpenAIRE

    2011-01-01

    Tesis (Especialista en Administración en Salud). Universidad Católica de Manizales, Facultad de Salud, 2011. La Empresa Social del Estado (E.S.E) Hospital San Vicente de Paúl de la ciudad de Palmira desea que el equipo consultor lleve a cabo el análisis de validación del cumplimiento del criterios de habilitación en los estándares de oportunidad, accesibilidad y seguridad en el área de fisioterapia, que permita identificar la aplicación de la norma, este proyecto de investigaci...

  1. Evaluación del desenlace y características clínicas de una serie de niños con neutropenia febril sin foco en el Hospital Universitario San Vicente de Paúl, Medellín, Colombia, 2000-2005

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    María Adelaida Aristizábal Gil; Isabel Cristina Valencia Montoya; Carolina Jaramillo Arango

    2008-01-01

    Introducción: la neutropenia febril (NF) se asocia a infección en 48-60% de los casos y es la segunda causa de ingreso hospitalario al servicio de oncología pediátrica. El objetivo del estudio fue evaluar el desenlace de una serie de niños, que recibían tratamiento para neutropenia febril sin foco aparente, según un protocolo preestablecido en el Servicio de Hematooncología infantil del Hospital Universitario San Vicente de Paúl. MATERIALES Y MÉTODOS: se incluyeron retrospectivamente historia...

  2. Impact on mormortality of o one conjugated treatment in 10 paraquat intoxicated patients attended at the San Vicente de Paul University Hospital in Medellín, Colombia, from august 2002 to august 2003 Impacto en la mortalidad de un tratamiento conjugado, en pacientes intoxicados no ocupacionalmente, con paraquat en el Hospital Universitario San Vicente de Paúl de Medellín, entre agosto de 2002 y agosto de 2003

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    Luz Marina Quiceno Quiceno

    2004-01-01

    Full Text Available Paraquat is a frequently used herbicide in Colombia. Its ingestion produces a severe intoxication with a high lethality. Up to now there is not a successful treatment for it. The purpose of this study was to determine if a conjugated treatment with NAcetylcysteine; A, C, and E vitamins, Propranolol, Colchicine and Furosemide increased the survival of ten paraquat intoxicated patients attended at the San Vicente de Paul University Hospital in Medellín, Colombia, based on the predicted probability of survival, Paraquat plasmatic concentration and clinical assessment. Six patients died because of their intoxication severity, three of them due to multisystemic organic failure, and three from acute respiratory failure. The results had statistical significance, showing a direct proportion between the high plasma levels of paraquat and mortality; and the fact that those with a multiorganic involvement died, despite their low Paraquat plasma levels. Based on clinical data it is possible to conclude that the treatment is useful only for patients with mild to moderate intoxication; there is not an exact correlation between the clinical features and the Paraquat plasma levels; and the clinical features are a very good indicator of the prognosis in Paraquat intoxicated patients. Further experimental and clinical trials are needed. En Colombia se utiliza frecuentemente el Paraquat, herbicida que al ser ingerido en cualquier cantidad produce toxicidad grave y alta mortalidad, sin haberse encontrado un tratamiento eficaz para la recuperación de los intoxicados. El objetivo de este estudio fue establecer si un tratamiento conjugado con N-acetilcisteína, vitamina A, C, E, propranolol, colchicina y furosemida, disminuye la mortalidad en pacientes, basados en la probabilidad de supervivencia, los niveles plasmáticos y el seguimiento clínico. Resultados: De diez pacientes con intoxicaciones no ocupacionales que ingresaron al Hospital Universitario San Vicente

  3. Laryngeal mask airway and endotracheal tube: odynophagia and dysfhonia incidence under general anesthesia at the University Hospital San Vicente de Paúl, Medellín, 2000 Máscara laríngea y tubo endotraqueal: incidencia de odinogagia y disfonía por su uso en anestesia general en el Hospital Universitario San Vicente de Paúl, Medellín, 2000

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    Mónica del Rosario Guzmán Carazo

    2001-03-01

    Full Text Available We describe the odynophagia and dysphonia incidence after the use of either laryngeal mask (LM or endotracheal tube (ETT in adult patients submitted to elective surgery, under general anesthesia, at the University Hospital San Vicente of Paul, Medellín, Colombia, between February 14 and March 16 of 2000. A descriptive and prospective study was carried out in 63 patients, in which the global incidence of odynophagia was 15.9% and that of dysphonia 12.5%; there was a higher odynophagia incidence with the use of ETT, 37.5%, than with LM, 2.6%. The dysphonia incidence was also higher with the use of the TET (25% than with LM (5.1%. The odynophagia incidence was higher in women (19.1% than in men (6.2%. Dysphonia was also more frequent in women (14.8% than in men (6.2%. Accordingly, we can conclude that odynophagia and dysphonia incidences are lower in men, when the time of anesthesia is two hours or less and when LM is used. More studies are necessary to carry out a comparative analysis of the complications with the use of LM and ETT, in order to offer the safest and more effective technique for insuring the airway. Se describe la incidencia de odinofagia y disfonía después del uso de la máscara laríngea (ML o del tubo endotraqueal (TET en pacientes adultos sometidos a cirugía electiva, bajo anestesia general, en el Hospital Universitario San Vicente de Paúl, de Medellín, entre febrero y marzo de 2000. Se hizo un estudio descriptivo, prospectivo, de corte transversal, en 63 pacientes, en los cuales se encontró una incidencia global de odinofagia del 15.9% y de disfonía del 12.5%. Hubo una mayor incidencia de odinofagia con el uso del TET, 37.5%, que con la ML, 2.6%. La incidencia de disfonía también fue mayor con el uso del TET (25% que con la ML (5.1%. La incidencia de odinofagia fue mayor en las mujeres (19.1% que en los hombres (6.2%. La disfonía también fue más frecuente en mujeres (14.8% que en hombres (6.2%. De acuerdo con los

  4. Evaluation of radical hysterectomu for treatment of stage IB cancer of the cervix, at Hospital San Vicente, Medellín, Colombia, 1980-1990 Evaluación de la histerectomía radical en el tratamiento del cáncer de cérvix estadio IB, en el Hospital San Vicente de Paúl de Medellín, 1980-1990

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    Felipe Carlos Petro Prieto

    1998-01-01

    Full Text Available A review was made of clinical charts of 139 patients with cancer of the cervix stage IB, treated by Wertheim-Meigs radical hysterectomy, at Hospital San Vicente, Medellín, Colombia, between 1980 and 1990, in order to evaluate results concerning complications derived from surgery, recurrences and residual cervicallesions. Average age was 39.3 ::!: 9.4 years. Follow-up period fluctuated between 0 and 181 months. One hundred and twenty two tumors (87.8% were epidermoid and 17 (12.2% adenocarcinomas. The degree of differentiation was determined in 101 cases: 43 (42.6% were well differentiated, 29 (28.7% moderately differentiated and 29 (28.7% poorly differentiated. Metastatic pelvic Iymphnodes involvement was present in 13 patients (9.4%: In 11 of them involvement was unilateral. Residual cervicallesion was left in 6 patients (4.3% of which 4 received additional treatment with radiotherapy. Recurrences appeared in 12 of the 100 patients followed for 2 or more years; in seven of these the recurrence ocurred in the first two years; there was a recurrence 13 years after surgery. Recurrences happened more often when tumors were poorly or moderately differentiated. Complications, mostly infectious, occurred in 43 patients (30.9%: Urinary tract infections (17 cases, wound infection (15 cases and infection of the vaginal dome (14 cases were the most frequently found. Se revisaron las historias clínicas de 139 pacientes con cáncer de cérvix estadio 18 sometidas a histerectomía radical tipo Wertheim-Meigs, en el Hospital San Vicente de Paúl de Medellín entre 1980 y 1990, con el fin de evaluar los resultados en lo referente a complicaciones derivadas de la cirugía, presencia de lesión cervical residual y recurrencias. La edad promedio de las pacientes fue 39.3 :!: 9.4 años. El tiempo de seguimiento varió entre 0 y 181 meses. El 87.8% de los tumores fueron epidermoides y el 12.2% adenocarcinomas. En 101 casos se logró determinar el grado de

  5. Volcanoes

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    In the past thousand years,volcanoes have claimed more than 300,000 lives. Volcanology is ayoung and dangerous science that helps us against the power of the Earth itself.We live on a fiery planet. Nearly 2000 miles beneath our feet, the Earth's inner core reachestemperatures of 12,000 degrees Fahrenheit. Molten rock or magma, rises to the earth's surface. Acold, rigid crust fractured into some twenty plates. When magma breaks through crust it becomes

  6. 3D Subsoil Model of the San Biagio `Salinelle' Mud Volcanoes (Belpasso, Sicily) derived from Geophysical Surveys

    Science.gov (United States)

    Imposa, S.; Grassi, S.; De Guidi, G.; Battaglia, F.; Lanaia, G.; Scudero, S.

    2016-11-01

    Mud volcanoes are common in active mountain fronts. At Mt. Etna, located just between the Apennine front in Sicily and its foredeep, there are some manifestations of mud volcanism in the lower border of the volcanic edifice. The activity of these mud volcanoes is characterized by persistent emission of muddy water mixed with salts, which rises to the surface due to the gas pressure in the subsoil. The San Biagio Salinelle is one of the three mud volcano fields located around the Paternò eruptive monogenic apparatus; this old volcanic structure was one of the first subaerial volcanic manifestations that formed in the pre-Etnean phase. It is not fully clear whether and how the activity of the mud fields is connected with the volcanic activity of Mt. Etna. Noninvasive geophysical surveys were carried out in the area of the active cone of the San Biagio Salinelle, in order to identify the probable ascent path of the emitted products. Seismic ambient noise records were collected at the nodes of a specially designed grid and, subsequently, the V s values were obtained from an active seismic survey. A digital elevation model (DEM) of the area was obtained by a topographic survey, carried out with the GNSS technique (global navigation satellite system), in real-time kinematic mode. The DEM and the topographic benchmark installed will represent the reference surface for future periodic monitoring of the ongoing deformation in the area. Our results provide an accurate and detailed 3D subsurface model showing the shallower feeding system of the investigated mud volcano.

  7. Tratamiento de las fracturas abiertas de la diáfisis tibial en el Hospital Universitario San Vicente de Paúl, Medellín, Colombia, 2005-2006

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    Luis Fernando Mena Delgado

    2008-11-01

    Full Text Available Las fracturas abiertas son el resultado de traumas de alta energía y se caracterizan por grados variables de lesiones esqueléticas y de los tejidos blandos, que incrementar el riesgo de infección y producir complicaciones en la cicatrización. Con el fin de ampliar el conocimiento sobre las fracturas abiertas de la diáfisis tibial y su tratamiento, se hizo un estudio retrospectivo en el Hospital Universitario San Vicente de Paúl (HUSVP, de Medellín, Colombia, para definir la forma de presentación, el tratamiento y las complicaciones en la población de esta ciudad. Durante el período comprendido entre el 1 de mayo de 2005 y el 30 de abril de 2006, se llevó a cabo un estudio de tipo descriptivo, retrospectivo, longitudinal en todos los pacientes atendidos en el HUSVP con diagnóstico de fractura abierta de la diáfisis tibial. Participaron en el estudio 66 pacientes con 67 fracturas abiertas de la tibia, con una edad promedio de 31 años. Los accidentes de tránsito, en especial los relacionados con motocicletas constituyeron la etiología más frecuente. El 24% de las fracturas fueron de tipo I, otro 24%, de tipo II y 51%, de tipo III. La administración de un antimicrobiano se hizo dentro de las primeras 6 horas en 86% de los pacientes. El retardo en la consolidación de la fractura y el desarrollo de algún tipo de infección fueron las complicaciones más frecuentes (34,3%. Este estudio describe el tratamiento de las fracturas abiertas de la diáfisis tibial en el HUSVP y lo compara con el descrito en la literatura; el tratamiento inicial en cuanto a lavados, administración de antibióticos y estabilización de las fracturas fue muy similar al informado en otros estudios.

  8. Estudio descriptivo de los casos de síndrome de Guillain-Barré atendidos en el Hospital Universitario San Vicente de Paúl, de Medellín, entre los años 2001 y 2005

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    Carlos Santiago Uribe Uribe

    2008-02-01

    Full Text Available

    Estudio descriptivo, tanto retrospectivo como prospectivo, llevado a cabo desde marzo de 2004, en el Hospital Universitario San Vicente de Paúl, de Medellín. Se buscó describir las características y la evolución con la inmunoterapia de los pacientes de 15 años o mayores con síndrome de Guillain- Barré que ingresaron al hospital entre 2001-2005. Se encontraron 54 pacientes, pero solamente se obtuvo información en 46 de ellos: 54,3% de mujeres y 45,7% de hombres, con edad promedio de 39,4 años (DE: 17,6. La principal causa de retraso en la atención fue iniciar el tratamiento en un nivel inferior de atención. Predominaron los pacientes con las formas ascendente y desmielinizante. Aquéllos con la variedad axonal permanecieron hospitalizados por más tiempo. La disociación albúminocitológica se dio en el 71,1% de los pacientes. Recibieron inmunoterapia 60,8%, tipo plasmaféresis, 39% e inmunoglobulina, 61%. Requirieron ventilación mecánica 45% de las personas que recibieron plasmaféresis y 75% de quienes recibieron inmunoglobulina; el puntaje de Hughes fue más alto en el grupo de inmunoglobulina. La neumonía fue la principal complicación. Se pudo concluir que se requiere reforzar los conocimientos de los médicos generales para evitar el retraso en la atención; las características clínicas que difieren de las reportadas en otras partes son: la proporción similar en hombres y mujeres y la rápida evolución. Durante el estudio fallecieron 3 pacientes. Se recolectó información de seguimiento al año en 65,3% de los pacientes, 23,3% de ellos tenían secuelas.

  9. Experiencia con pacientes hospitalizados en la unidad de capacitación para el tratamiento de la diarrea del Hospital Univertario San Vicente de Paúl de Medellín Experience with hospitalized children at a training unit for diarrhea treatment, in Medellín, Colombia

    OpenAIRE

    Carlos A. Bernal Parra

    1995-01-01

    Entre 1988 y 1994 se atendieron 1.755 niños en la sala de hospitalización de la Unidad de Capacitación para el Tratamiento de la Diarrea, del Hospital Universitario San Vicente de Paúl, de Medellín; 1.022 (58.2%) fueron hombres y 733 (41.8%) mujeres; mil setenta y ocho eran menores de un año (61.4%) y 677 (38.6%) tenían más de un año. Eran desnutridos 888 (50.6%). Presentaban diarrea persistente 418 (23.8%); 1.0...

  10. Atención de enfermería para la prevención de infecciones en heridas quirúrgicas abdominales, de pacientes entre 18 a 75 años de edad hospitalizados en el servicio de cirugía del hospital San Vicente de Paúl de Ibarra, en el año 2011.

    OpenAIRE

    Mina García, Silvia Mariana

    2012-01-01

    Establecer técnicas preventivas de infección de heridas quirúrgicas abdominales, en pacientes de 18 a 75 años de edad en el posoperatorio del Servicio de Cirugía del Hospital “San Vicente de Paúl” de la ciudad de Ibarra en el periodo 2011. La presente investigación se desarrolló en cinco capítulos: el primero concerniente al problema de investigación parte de hechos generales sobre infección de herida quirúrgica abdominal en el mundo seguido de lo que sucede en países de América, luego en ...

  11. Volatile contents of mafic-to-intermediate magmas at San Cristóbal volcano in Nicaragua

    Science.gov (United States)

    Robidoux, P.; Aiuppa, A.; Rotolo, S. G.; Rizzo, A. L.; Hauri, E. H.; Frezzotti, M. L.

    2017-02-01

    San Cristóbal volcano in northwest Nicaragua is one of the most active basaltic-andesitic stratovolcanoes of the Central American Volcanic Arc (CAVA). Here we provide novel constraints on the volcano's magmatic plumbing system, by presenting the first direct measurements of major volatile contents in mafic-to-intermediate glass inclusions from Holocene and historic-present volcanic activity. Olivine-hosted (forsterite [Fo] 1500 μg/g) found in Nicaragua at Cerro Negro, Nejapa, and Granada. Models of H2O and CO2 solubilities constrain the degassing pathway of magmas up to 425 MPa ( 16 km depth), which includes a deep CO2 degassing step (only partially preserved in the MI record), followed by coupled degassing of H2O and S plus crystal fractionation at magma volatile saturation pressures from ∼ 195 to < 10 MPa. The variation in volatile contents from San Cristóbal MI is interpreted to reflect (1) Holocene eruptive cycles characterized by the rapid emplacement of basaltic magma batches, saturated in volatiles, at depths of 3.8-7.4 km, and (2) the ascent of more-differentiated and cogenetic volatile-poor basaltic andesites during historic-present eruptions, having longer residence times in the shallowest (< 3.4 km) and hence coolest regions of the magmatic plumbing system. We also report the first measurements of the compositions of noble-gas isotopes (He, Ne, and Ar) in fluid inclusions in olivine and pyroxene crystals. While the measured 40Ar/36Ar ratios (300-304) and 4He/20Ne ratios (9-373) indicate some degree of air contamination, the 3He/4He ratios (7.01-7.20 Ra) support a common mantle source for Holocene basalts and historic-present basaltic andesites. The magmatic source is interpreted as generated by a primitive MORB-like mantle, that is influenced to variable extents by distinct slab fluid components for basalts (Ba/La 76 and U/Th 0.8) and basaltic andesites (Ba/La 86 and U/Th 1.0) in addition to effects of magma differentiation. These values for the

  12. Morbilidad y mortalidad en la unidad de cuidados intensivos pediátricos del Hospital Universitario San Vicente de Paúl (HUSVP, de Medellín, Colombia, 2001-2005

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    Augusto Quevedo Vélez

    2008-02-01

    Full Text Available

     

    INTRODUCCIÓN: el aumento en el número y la complejidad de las Unidades de Cuidados Intensivos Pediátricos (UCIP, sumado a su alto costo, ha estimulado el interés y la necesidad de evaluar su funcionamiento, la eficacia de la labor realizada y la calidad en la prestación de los servicios, mediante indicadores asistenciales que se derivan de estudios descriptivos de morbilidad y mortalidad.

    OBJETIVO: describir las causas de morbilidad y mortalidad y las características sociodemográficas de los niños admitidos a la UCIP del Hospital Universitario San Vicente de Paúl (HUSVP, de Medellín, Colombia.

    METODOLOGÍA: estudio descriptivo y retrospectivo de corte transversal donde se hizo una selección aleatoria simple de 328 historias de pacientes que ingresaron a la UCIP durante el período de estudio. Los datos obtenidos de la revisión de las historias fueron tabulados y analizados estadísticamente.

    RESULTADOS: se encontró que 59,8% de los pacientes eran de sexo masculino, 40,9% eran menores de 1 año y 43% provenían del

  13. Calidad de vida de los pacientes con enfermedad arterial coronaria incluidos en el programa de rehabilitación cardiaca del hospital San Vicente de Paúl en Heredia

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    Hilda Loáisiga Ledezma

    2008-12-01

    la condición médica actual de los pacientes es estable, a pesar de que muchos se encuentran subtratados. Los principales factores limitantes que encontramos nos sugieren que falta conciencia en cuanto al hecho de que la rehabilitación cardiaca debe ser vista como parte del tratamiento de estos pacientes y que como tal requiere de mayores recursos para poder beneficiar a una mayor población.Quality of life of patients with coronary artery disease from the Cardiac Rehabilitation Program at the San Vicente de Paul Hospital in Heredia Introduction: Cardiovascular disease is the first cause of death in our country, reaching approximately one third of the general mortality and atherosclerotic disease represents the majority of the mortality of this group. Cardiac Rehabilitation represents one of the fundamental parts of the treatment, combined with pharmacological therapy and revascularization procedures for coronary artery disease. The objectives of this study were to evaluate the impact of a cardiac rehabilitation program, in the quality of life of patients and their families and to become aware of factors that can interfere with the rehabilitation process. Methods: This is an observational, transverse study of patients with coronary artery diseases, with at least six month of assistance to the cardiac rehabilitation program of our hospital, up to October 2005. We used a mixed instrument of data recollection, composed of a supervised written inquiry and complemented with the measure of quantifiable variables. Results: There were no significant differences in gender population. 98% considered an improvement in their quality of life. 97% considered that their family understood better their illness, but only 45% reported integration of the family to the program. The data obtained from the stress test showed that 74% had a negative stress test for ischemia, 25% positive for ischemia and 1 % positive for high risk ischemia. The three factors that more frequently limited

  14. Associated urological malformations and development of chronic kidney disease in pediatric patients with urinary tract infection at San Vicente de Paúl Hospital (Medellín, Colombia between 1960 and 2010 = Malformaciones urológicas asociadas y desarrollo de enfermedad renal crónica en pacientes pediátricos con diagnóstico de infección urinaria que consultaron al Hospital Universitario San Vicente de Paúl (Medellín, Colombia entre los años 1960-2010

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    Serrano Gayubo, Ana Katherina

    2013-01-01

    Full Text Available Introduction: Urinary tract infection (UTI is a major cause of bacterial disease in the pediatric population. Associated factors such as vesicoureteral reflux (VUR, posterior urethral valves, neurogenic bladder and other anatomical malformations increase the likelihood of developing renal scarring and dysplasia/hypoplasia, which at the same time increase in the long term the risk of hypertension (HT, proteinuria and chronic kidney disease (CKD. Objective: To describe the malformations associated with the frequency of UTI and development of CKD in pediatric patients who consulted San Vicente de Paúl Hospital, in Medellin, Colombia, between 1960 and 2010. Methods: A descriptive, retrospective study in which the clinical records of 4.476 patients with UTI were evaluated. Results: Patients with urinary tract anomalies corresponded to 78.3% of the total (predominance of women: 52.8%. Primary VUR was found in 29.9%; out of these, 5.1% progressed to CKD. Neurogenic bladder was diagnosed in 8.6%, of which 70.8% were secondary to myelomeningocele and 4.9% developed CKD. The posterior urethral valves were present in 3.5% of the total sample, of which 28.5% developed CKD. Conclusion: UTI in the pediatric population is a marker of urinary tract malformation and the prognosis is determined by the presence of VUR, obstructive anomalies and/or renal dysplasia favoring renal scarring, and increasing the risk of hypertension, proteinuria and CKD. An appropriate diagnostic approach would be the basis to implement management strategies to prevent deterioration of renal function.

  15. Elaboración y aplicación de estrategias didáctico-lúdicas para el desarrollo de la inteligencia lingüística verbal en los estudiantes que cursan el cuarto año de educación básica de la escuela san vicente ferrer, cantón alausí, provincia de chimborazo, durante el período enero a junio del 2011.

    OpenAIRE

    Barreno Rojas, Martha Cecilia

    2015-01-01

    La presente investigación titulada “Elaboración y aplicación de estrategias didáctico-lúdicas para el desarrollo de la inteligencia Lingüística Verbal en los estudiantes que cursan el cuarto año de educación básica de la escuela San Vicente Ferrer, cantón Alausí, provincia de Chimborazo durante el período enero a junio del 2011”, está estructurada con el objetivo de alcanzar una adecuada comunicación entre los niños, niñas, docentes y padres de familia, desenvolvimiento y fluidez verbal, tamb...

  16. Emission of gas and atmospheric dispersion of SO2 during the December 2013 eruption at San Miguel volcano (El Salvador, Central America)

    Science.gov (United States)

    Granieri, Domenico; Salerno, Giuseppe; Liuzzo, Marco; La Spina, Alessandro; Giuffrida, Giovanni; Caltabiano, Tommaso; Giudice, Gaetano; Gutierrez, Eduardo; Montalvo, Francisco; Burton, Michael R.; Papale, Paolo

    2015-07-01

    San Miguel volcano, El Salvador, erupted on 29 December 2013, after a 46 year period characterized by weak activity. Prior to the eruption a trend of increasing SO2 emission rate was observed, with all values measured after mid-November greater than the average value of the previous year (~310 t d-1). During the eruption, SO2 emissions increased from the level of ~330 t d-1 to 2200 t d-1, dropping after the eruption to an average level of 680 t d-1. Wind measurements and SO2 emission rates during the preeruptive, syneruptive, and posteruptive stages were used to model SO2 dispersion around the volcano. Atmospheric SO2 concentration exceeded the dangerous threshold of 5 ppm in the crater region and in some sectors with medium elevation of the highly visited volcanic cone. Combining the SO2 emission rate with measured CO2/SO2, HCl/SO2, and HF/SO2 plume gas ratios, we estimate the CO2, HCl, and HF outputs for the first time on this volcano.

  17. Experiencia con pacientes hospitalizados en la unidad de capacitación para el tratamiento de la diarrea del Hospital Univertario San Vicente de Paúl de Medellín Experience with hospitalized children at a training unit for diarrhea treatment, in Medellín, Colombia

    Directory of Open Access Journals (Sweden)

    Carlos A. Bernal Parra

    1995-02-01

    Full Text Available

    Entre 1988 y 1994 se atendieron 1.755 niños en la sala de hospitalización de la Unidad de Capacitación para el Tratamiento de la Diarrea, del Hospital Universitario San Vicente de Paúl, de Medellín; 1.022 (58.2% fueron hombres y 733 (41.8% mujeres; mil setenta y ocho eran menores de un año (61.4% y 677 (38.6% tenían más de un año. Eran desnutridos 888 (50.6%. Presentaban diarrea persistente 418 (23.8%; 1.056 (82.2% diarrea acuosa, 213 (16.6% diarrea disentérica y 16 (1.2% solamente vómitos. Novecientos trece pacientes (52% consultaron o estuvieron en la sala de hidratación oral y 276 (15.7% habían estado hospitalizados por diarrea durante el último mes. Al ingreso 670 (38.2% se encontraban hidratados, 151 (8.6% tenían deshidratación grave y 934 (53.2% presentaban otros grados de deshidratación. La bacteria más frecuentemente identificada fue Salmonella enteritidis (258 casos; 23.9%. Setecientos ochenta y seis pacientes (44.8% recibieron los líquidos solamente por vía oral o por sonda nasogástrica y 969 (55.2% por vía intravenosa. Al egreso 1.088 (62% tuvieron el diagnóstico de diarrea aguda y 667 (38% el de diarrea persistente. La mortalidad fue de 1.5% (27 pacientes.

    We present the results of our experience in the in-patient treatment of children with diarrhea. Between 1988 and 1994,1.755 children were hospitalized for this purpose at the Training Unit for Diarrhea Treatment, Hospital San Vicente, in Medellín, Colombia; 1.022 (58.2% were males and 733 (41.8% females; 1.078 (61.4% were younger than one year and 677 (38.6% were above this age. Eight hundred and eighty eight (50.6% were undernourished. At admission, persistent diarrhea was found in 418 (23.8%; stools were watery in 1.056 (82.2% and dysenteric in 213 (16.6%; 16

  18. Evaluación del desenlace y características clínicas de una serie de niños con neutropenia febril sin foco en el Hospital Universitario San Vicente de Paúl, Medellín, Colombia, 2000-2005

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    María Adelaida Aristizábal Gil

    2008-11-01

    Full Text Available Introducción: la neutropenia febril (NF se asocia a infección en 48-60% de los casos y es la segunda causa de ingreso hospitalario al servicio de oncología pediátrica. El objetivo del estudio fue evaluar el desenlace de una serie de niños, que recibían tratamiento para neutropenia febril sin foco aparente, según un protocolo preestablecido en el Servicio de Hematooncología infantil del Hospital Universitario San Vicente de Paúl. MATERIALES Y MÉTODOS: se incluyeron retrospectivamente historias clínicas de pacientes menores de 15 años con diagnóstico nuevo de neoplasia maligna y neutropenia febril sin foco, hospitalizados en un lapso de 5 años. Los datos se registraron en un formato preestablecido. RESULTADOS: se incluyeron 103 historias clínicas con 182 episodios de NF; 34,1% fueron pacientes con leucemia linfoblástica riesgo estándar (LLA, 19,8% LLA de alto riesgo y 13,7%, linfoma no Hodking. 68,1% tuvieron NF grave y en 94,5% se había aplicado quimioterapia previa (79,7% intensiva. La infección se documentó clínicamente en 38,4% y microbiológicamente en 25,2% de los episodios; hubo bacteriemia en 15,4% de los episodios, 3,3% con urocultivo positivo y 6,5% con aislamiento del invasor en otros sitios. Los microorganismos más frecuentes fueron Escherichia coli (24% y Pseudomonas aeruginosa (13%. Hubo mayor resistencia a ceftriazona y cefatzidime tanto de gérmenes grampositivos como de gramnegativos y producción de betalactamasas en 9% durante un año de evaluación; 50% de los aislamientos de S. aureus coagulasa negativo fueron resistentes a oxacilina. En 37 episodios hubo complicaciones (20,2%, la más frecuente de las cuales fue la afectación cardiopulmonar; en 25,2% fracasó el tratamiento, en 21,4% hubo respuesta parcial y 7 pacientes (3,8% fallecieron. CONCLUSIONES: los hallazgos son similares a los reportados por otros autores; predominan en nuestra unidad los microorganismos gramnegativos como causa importante de

  19. Características clínicas del reflujo vesicoureteral en niños atendidos en el Hospital Universitario San Vicente de Paúl de Medellín,1960-2004 Clinical characteristics of vesicoureteral reflux in children at a university hospital in Medellín, Colombia. 1960-2004.

    Directory of Open Access Journals (Sweden)

    José William Cornejo Ochoa

    2006-01-01

    Full Text Available En el Hospital Universitario San Vicente de Paúl (HUSVP de la ciudad de Medellín, Colombia, estudiamos 4.129 niños con infección del tracto urinario (ITU. Encontramos que entre las anomalías asociadas a la ITU la más común fue el reflujo vesicoureteral (RVU en 1.309 niños (31,7%, quienes presentaron 1.914 unidades renales afectadas (605 niños tenían reflujo bilateral. El presente es un trabajo descriptivo, retrospectivo, llevado a cabo con la información registrada en las bases de datos del servicio de nefrología pediátrica, en los niños con diagnóstico de RVU menores de 17 años, atendidos entre 1960- 2004. Se evaluaron las características clínicas relevantes de dichos niños, y se encontraron como hallazgos principales los siguientes: predominio en el sexo femenino (61,1%; que el diagnóstico de RVU se hizo al 29,2% de los pacientes en el primer año de vida, y que el 41,4% tenían otras anomalías asociadas al RVU. Otros hallazgos de importancia fueron: que el 72,4% de los niños tuvieron RVU de los grados III y IV; el 53,8% tuvieron compromiso unilateral; el 23,8% de los casos se resolvieron espontáneamente y el 36,1% necesitaron corrección quirúrgica. En cuanto al estudio de las cicatrices renales, se realizó en 582 pacientes (44,5% de 1.309 de los cuales fue positivo en 371 (63,7%; el 2,3% presentaron hipertensión arterial; el 7,4% desarrollaron insuficiencia renal crónica (IRC; al 0,9% se les realizó trasplante renal, y el porcentaje de muertes fue de 2,4%. Los hallazgos del presente estudio, muy cercanos a los reportados en la literatura, nos permiten hacer énfasis en las recomendaciones sobre el manejo de los niños con RVU por el riesgo de presentar lesiones renales que conducen a hipertensión e IRC. El progreso tecnológico que permite un diagnóstico más preciso del reflujo y de las cicatrices renales, la difusión de la información y el mayor compromiso del equipo médico se deben aprovechar para hacer un

  20. La violencia y los movimientos sociales en el gobierno de Vicente Fox, 2001-2002

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    Mario Alberto Velázquez García

    2004-01-01

    Full Text Available El objetivo del presente artículo es analizar el movimiento social contra la construcción del aeropuerto en San Salvador Atenco entre 2001 y 2002. Este movimiento es la primera movilización social que enfrenta el presidente Vicente Fox. Se examinan los recursos utilizados en sus acciones, lo que incluye la utilización de la violencia y las consecuencias que tuvo para la imagen presidencial; se emplea la teoría de movilización de recursos para observar las formas de manifestación utilizadas frente al Estado.

  1. La violencia y los movimientos sociales en el gobierno de Vicente Fox, 2001-2002

    OpenAIRE

    Mario Alberto Velázquez García

    2004-01-01

    El objetivo del presente artículo es analizar el movimiento social contra la construcción del aeropuerto en San Salvador Atenco entre 2001 y 2002. Este movimiento es la primera movilización social que enfrenta el presidente Vicente Fox. Se examinan los recursos utilizados en sus acciones, lo que incluye la utilización de la violencia y las consecuencias que tuvo para la imagen presidencial; se emplea la teoría de movilización de recursos para observar las formas de ...

  2. Fístulas carótido-cavernosas: resultados clínico y angiográfico en pacientes tratados por el Grupo Escuela de Neurorradiología del Hospital Universitario San Vicente de Paúl, de Medellín, Colombia, en el período 1995-2007

    Directory of Open Access Journals (Sweden)

    José William Cornejo Ochoa

    2008-11-01

    Full Text Available INTRODUCCIÓN: las fístulas carótido-cavernosas (FCC son muy frecuentes en Medellín, Colombia. Su tratamiento quirúrgico ha tenido tasas elevadas de complicaciones debido a la arquitectura particular de esta área. La terapia endovascular ha surgido entonces como la primera opción de tratamiento para los pacientes con esta enfermedad. OBJETIVO: describir las principales características de nuestros pacientes con FCC, el método terapéutico empleado y los resultados clínico y angiográfico obtenidos. MATERIALES Y MÉTODOS: revisamos retrospectivamente 51 pacientes tratados por el Grupo Escuela de Neurorradiología del Hospital Universitario San Vicente de Paúl desde 1995 hasta 2007, describiendo variables demográficas, causa de la lesión, estado clínico, tipo de fístula, método terapéutico empleado y los resultados clínico y angiográfico. RESULTADOS: hubo predominio en hombres; el promedio de edad fue de 35 años. Las causas de las fístulas fueron: espontáneas en 4 pacientes (7,8%, trauma encefalocraneano cerrado en 33 pacientes (64,7%, herida por proyectil de arma de fuego en 12 (23,5% y herida por arma cortopunzante en 2 (3,9%. Las manifestaciones clínicas, en orden descendente de frecuencia, fueron: quemosis, proptosis, soplo, dolor, disminución de la agudeza visual y sangrado intracraneal. En cuanto al tipo, 86,3% fueron A; 9,8%, B; 2%, C y 2%, D. En 32 pacientes (62,7% se logró la permeabilidad de la carótida interna y en los restantes 19 hubo necesidad de ocluirla. En 48 pacientes se empleó terapia endovascular, más frecuentemente con balones (34 casos tanto para la oclusión del sitio fistuloso como para la realización de trapping. En 14 casos se emplearon coils, en 3 pacientes stent, en 4 NCBA (n-cianocrilato de butilo; en dos pacientes hubo resolución espontánea de la fístula y otra más se resolvió con masaje carotídeo. Las vías de acceso vascular más frecuentes fueron la arterial en 44 pacientes (81,5% y

  3. Resultados perinatales de las mujeres con ruptura de las membranas ovulares entre las semanas 24 y 34 de la gestación sometidas a manejo expectante en el Hospital Universitario San Vicente de Paúl, Medellín-Colombia

    Directory of Open Access Journals (Sweden)

    Álvaro Antonio Araque Fernández

    2008-11-01

    Full Text Available La literatura mundial sobre el manejo de la ruptura prematura de membranas ovulares pretérmino (RPMOP y sobre los resultados perinatales, informa de una disminución de la morbilidad y la mortalidad de los recién nacidos cuyas madres recibieron profilaxis con antibióticos, pero algunos estudios presentan inconsistencias en su metodología, lo que se demuestra con el análisis del estudio ORACLE, por parte del Centro Latinoamericano de Perinatología y de Desarrollo Humano (CLAP. Esta organización consideró sin validez suficiente la conclusión acerca de la disminución de la morbilidad y mortalidad perinatales con el uso de antibióticos en el cual se hizo un análisis general para dos poblaciones distintas, una con RPMOP y otra con APP (amenaza de parto prematuro; el error metodológico estimado fue no realizar análisis por subgrupos como dos poblaciones diferentes. En el Hospital Universitario San Vicente de Paúl (HUSVP de Medellín, Colombia, se hace un manejo expectante de la RPMOP, el cual no incluye uso de antibióticos. El objetivo de esta investigación fue describir los desenlaces perinatales de las mujeres con RPMOP de acuerdo con los diferentes grupos de edad gestacional y los diferentes períodos de latencia, atendidas en el HUSVP y sometidas al protocolo institucional que consiste en manejo expectante, sin antibióticos. Esta investigación fue descriptiva prospectiva con mujeres cuya edad gestacional estaba comprendida entre las 24 y 33semanas + 6 días con diagnóstico de RPMOP. El diagnóstico se efectuó por el examen clínico y/o la prueba de índigo carmín. El seguimiento consistió en evaluación clínica, monitoreo electrónico fetal, perfil biofísico fetal (PBF y reactantes de fase aguda realizados periódicamente. Se evaluaron los siguientes desenlaces primarios: muerte perinatal, corioamnionitis, síndrome de dificultad respiratoria (SDR, sepsis temprana, hemorragia intraventricular (HIV, enterocolitis necrosante

  4. Características funcionales y ecocardiográficas de un grupo de pacientes con infarto traumático de miocardio, al inicio y a los seis meses, captados en el Hospital Universitario San Vicente de Paúl, Medellín, 2002-2004

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    Alejandro Osorio Ramírez

    2008-02-01

    Full Text Available

    OBJETIVO: presentar y analizar el comportamiento de las características funcionales y ecocardiográficas de un grupo de pacientes con infarto traumático de miocardio al inicio y a los seis meses del evento.

    PROCEDIMIENTOS: se realizó un estudio descriptivo y prospectivo de 11 pacientes con infarto traumático de miocardio, captados entre enero de 2002 y abril de 2004 en el Servicio de Rehabilitación Cardíaca del Hospital Universitario San Vicente de Paúl. RESULTADOS: en la primera evaluación la fracción de eyección (FE y la fracción de acortamiento (FA fueron relativamente bajas. En el seguimiento se observó un incremento en el diámetro diastólico del ventrículo izquierdo (DDVI, en el diámetro sistólico del ventrículo izquierdo (DSVI y en el índice de masa ventricular izquierda (IMVI, pero sin que fueran estadísticamente significativos. El grosor relativo (GR disminuyó en forma estadísticamente significativa (p = 0,010. La FE y la FA mejoraron pero sin significancia estadística. El estado funcional se incrementó en forma significativa. La media de diferencias para el DDVI y el DSVI mostró tendencia al incremento en los diámetros.

    CONCLUSIONES: los pacientes presentaron infartos extensos con compromiso apical y anterolateral y con lesiones importantes en la arteria descendente

  5. Características epidemiológicas, clínicas y microbiológicas, y mortalidad de neonatos con sepsis comprobada en el Hospital Universitario San Vicente de Paúl, Medellín, 2003-2005

    Directory of Open Access Journals (Sweden)

    José William Cornejo Ochoa

    2008-02-01

    Full Text Available

    OBJETIVO: determinar las características epidemiológicas, clínicas y microbiológicas, y la mortalidad por sepsis comprobada en la unidad de neonatos del Hospital Universitario San Vicente de Paúl (HUSVP de Medellín, Colombia, entre enero de 2003 y diciembre de 2005.

    MÉTODOS: este es un estudio de cohorte retrospectiva descriptiva. Se revisaron las historias clínicas de los neonatos con sepsis comprobada.

    RESULTADOS: durante el período analizado ingresaron a la unidad neonatal 2447 neonatos de los cuales 181 presentaron sepsis comprobada (7,43%, de estos en 10 casos (5,4% no fue posible encontrar la historia clínica. En total se analizaron 171 historias donde se reportaron 185 episodios de sepsis. El germen más frecuentemente aislado fue Staphylococcus spp., coagulasa negativa (40,2%, seguido de los bacilos gram negativos (33,6%. Se halló Candida spp., en 5,5% de los casos. Las manifestaciones más comunes fueron apnea e intolerancia a la vía oral. Se encontró una mortalidad del 6,4%; los bacilos gram negativos representaron el 50% de los gérmenes asociados con muerte; la leucopenia, la trombocitopenia y la hipotensión se asociaron con mortalidad. Las alteraciones del hemograma, clásicamente consideradas sugestivas de sepsis neonatal, como bandas por encima del 10%, índice de neutr

  6. Magmatic controls on eruption dynamics of the 1950 yr B.P. eruption of San Antonio Volcano, Tacaná Volcanic Complex, Mexico-Guatemala

    Science.gov (United States)

    Mora, Juan Carlos; Gardner, James Edward; Macías, José Luis; Meriggi, Lorenzo; Santo, Alba Patrizia

    2013-07-01

    San Antonio Volcano, in the Tacaná Volcanic Complex, erupted ~ 1950 yr. B.P., with a Pelean type eruption that produced andesitic pyroclastic surges and block-and-ash flows destroying part of the volcano summit and producing a horse-shoe shaped crater open to the SW. Between 1950 and 800 yr B.P. the eruption continued with effusive andesites followed by a dacite lava flow and a summit dome, all from a single magma batch. All products consist of phenocrysts and microphenocrysts of zoned plagioclase, amphibole, pyroxene, magnetite ± ilmenite, set in partially crystallized groundmass of glass and microlites of the same mineral phases, except for the lack of amphibole. Included in the andesitic blocks of the block-and-ash flow deposit are basaltic andesite enclaves with elongated and ellipsoidal forms and chilled margins. The enclaves have intersertal textures with brown glass between microphenocrysts of plagioclase, hornblende, pyroxene, and olivine, and minor proportions of phenocrysts of plagioclase, hornblende, and pyroxene. A compositional range obtained of blocks and enclaves resulted from mixing between andesite (866 °C ± 22) and basaltic andesite (enclaves, 932 °C ± 22), which may have triggered the explosive Pelean eruption. Vestiges of that mixing are preserved as complex compositional zones in plagioclase and clinopyroxene-rich reaction rims in amphibole in the andesite. Whole-rock chemistry, geothermometry, experimental petrology and modeling results suggest that after the mixing event the eruption tapped hybrid andesitic magma (≤ 900 °C) and ended with effusive dacitic magma (~ 825 °C), all of which were stored at ~ 200 MPa water pressure. A complex open-system evolution that involved crustal end-members best explains the generation of effusive dacite from the hybrid andesite. Amphibole in the dacite is rimmed by reaction products of plagioclase, orthopyroxene, and Fe-Ti oxides produced by decompression during ascent. Amphibole in the andesite

  7. St. Vicent Ferrer’s Catalán sermon on St. Martin of Tours

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    Ferreiro, Alberto

    2013-12-01

    Full Text Available One of the most widely venerated saints in the Middle Ages was St. Martin of Tours whose cult continues to this day in many parts of the world. In the Middle Ages, he became as popular as other major saints such as Thomas Becket, Santiago de Compostela and the Virgin Mary. St. Martin’s cult became very prominent in the Iberian Peninsula before and after the emergence of the cult of Santiago de Compostela. In St. Vicent Ferrer’s voluminous sermons this one in Catalán is dedicated to this most venerated Gallic saint. The most important late antique and early medieval sources that form the background of this sermon are by Sulpicius Severus- the Gallus and Vita Sancti Martini. In the high Middle Ages, however, his cult was popularized through the Legenda Aurea written by the Dominican Jacobus of Voragine, who synthesized Sulpicius’ two works on St. Martin. Moreover, St. Vicent preached not to make any major doctrinal breakthroughs- his main interest was to evangelize, not to write academic theology- he nevertheless exhibited great creativity. The object of this study is St. Vicent’s Catalán sermon Alius Sermo Sancti Martini, CXXXIV.Uno de los santos más venerados en la edad media fue San Martín de Tours, cuyo culto continúa hasta hoy en muchas partes del mundo. En la edad media, se hizo tan popular como otros grandes Santos: Thomas Becket, Santiago de Compostela y la Virgen María. El culto de San Martín se hizo prominente en la Península Ibérica antes y después de la aparición del culto a Santiago de Compostela. En los sermones voluminosos de San Vicente Ferrer esta uno en Catalán que está dedicado a este santo tan venerado de Galia. Las fuentes más importantes procedentes de la antigu.edad tardía y principios medievales que forma el fondo de este sermón son Gallus y la Vita Sancti Martini de Sulpicio Severo. Sin embargo, en la alta edad media, su culto se popularizó a través de la Legenda Aurea escrita por el dominico

  8. Morbimortalidad en la unidad de cuidados intensivos pediátricos del Hospital Universitario San Vicente de Paúl, Medellín, Colombia, 2001-2005 Morbidity and mortality at a pediatric intensive care unit in Medellín, Colombia, 2001-2005

    Directory of Open Access Journals (Sweden)

    Augusto Quevedo Vélez

    2008-01-01

    Full Text Available

    Introducción: el aumento en el número y la complejidad de las Unidades de Cuidados Intensivos Pediátricos (UCIP, sumado a su alto costo, ha estimulado el interés y la necesidad de evaluar su funcionamiento, la eficacia de la labor realizada y la calidad de los servicios que prestan, mediante indicadores asistenciales que se derivan de estudios descriptivos de morbimortalidad.

     

    Objetivo: describir las causas de morbilidad y mortalidad y las características sociodemográficas de los niños admitidos a la UCIP del Hospital Universitario San Vicente de Paúl (HUSVP de Medellín, Colombia, en el período comprendido entre el primero de enero de 2001 y el 31 de diciembre del 2005.

     

    Metodología: estudio descriptivo y retrospectivo de corte transversal, en el que por medio de una aleatorización simple se hizo la selección de 328 historias de pacientes que ingresaron a la UCIP durante el período de estudio. Se tabularon y analizaron estadísticamente los datos obtenidos de la revisión de las historias.

     

    Resultados: se encontró que 59,8% de

  9. Factores de riesgo de accidentes en niños que consultaron al Policlínico Infantil de Medellín Diciembre 1 de 1998-marzo 6 de 1999 Risk factors for accidents in children that consulted to the emergency unit of San Vicente de Púl Children's Hospital of Medellín, Colombia. December 1, 1998 - March 6, 1999

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    María Beatriz Mesa Restrepo

    2001-02-01

    Full Text Available Se hizo un estudio descriptivo prospectivo para identificar los factores de riesgo para accidentes en los niños menores de 12 años que consultaron por esta causa al Policlínico Infantil de Medellín, desde diciembre 1 de 1998 hasta marzo 6 de 1999. Se compararon dichos factores durante un período de vacaciones escolares y uno de actividad académica de igual duración. Se trabajó con 1.185 pacientes. La distribución por sexo fue: 771 niños (65% y 414 niñas (35%; el 76,9% (912 pacientes procedían de Medellín y su área metropolitana. El lugar del accidente fue como sigue: en la calle 582 niños (49%; en el hogar 496 niños (41,9%, en la escuela 32 niños (2,7% y en otros sitios 75 niños (6,3%. Se encontraban solos en el momento del accidente 199 niños (16,8%, con otros niños 512 (43,2% y con adultos 474 (40%. El principal tipo de accidente fue el mecánico en 1.077 casos (90,9%; 740 niños sufrieron caídas lo que representó el 62,5% de todos los accidentes. El accidente por vehículos de motor representó el 10,3% (123 casos. El trauma fue leve en 1.128 niños (95,2%. La letalidad fue del 0,7% (8 niños, especialmente por trauma craneoencefálico debido a accidentes de tránsito y heridas por arma de fuego. El trauma fue más grave en los menores de 2 años. Se encontró diferencia estadísticamente significativa en la frecuencia de traumas entre el período de vacaciones y el académico, con más accidentes durante las vacaciones. Se recomienda iniciar programas de prevención de accidentes especialmente en el hogar, dirigidos a los padres y cuidadores de los menores, con énfasis en las etapas de desarrollo de los niños y los riesgos para los diferentes tipos de accidentes. A prospective descriptive study was made to identify the factors of risk for accidents in children smaller than 12 years that consulted for this cause to the Emergency Unit of San Vicente de Paul Children´s Hospital of Medellin, from December 1 of 1998 until

  10. Características técnicas y resultados maternos y perinatales de las pacientes isoinmunizadas sometidas a transfusión fetal intrauterina Hospital Universitario San Vicente de Paúl, Medellín, Colombia, 1998-2006

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    Carlos Alberto Rebolledo López

    2008-02-01

    Full Text Available

    OBJETIVO: describir las características sociodemográficas, clínicas y técnicas y los resultados maternos y perinatales de las pacientes isoinmunizadas sometidas a transfusión fetal intrauterina (TFI en el Hospital Universitario San Vicente de Paúl (HUSVP de Medellín, Colombia, entre los años 1998 y 2006.

    METODOLOGÍA: se realizó un estudio descriptivo retrospectivo de 13 pacientes isoinmunizadas que requirieron TFI en el HUSVP entre 1998 y 2006. Se analizaron variables como ruptura prematura de membranas ovulares (RPMO, corioamnionitis, sufrimiento fetal agudo (SFA, muerte perinatal e hidropesía fetal; además se describen las características técnicas de las transfusiones así como las complicaciones relacionadas con el procedimiento.

    RESULTADOS: a un total de 13 madres isoinmunizadas se les hicieron 29 TFI. La tasa de supervivencia fetal fue del 77%. Se complicaron 5 de las madres (38,5% así: RPMO en 3 casos (23% y corioamnionitis en 2 (15,4%. Seis fetos (46,1% presentaron al menos una complicación. Tres fetos fallecieron (23%, 2 (15,4% presentaron hidropesía inmune, y en 4 (30,8% hubo SFA. En total se realizaron 29 transfusiones durante las cuales hubo 11complicaciones en 6 fetos así: bradicardia fetal 4 (13,7%, desgarro del cordón 1 (3,4%, hematomas del cordón 2 (6,8% y sangrado postransfusión 4

  11. Mechanism of 2003, 2007 and 2009 earthquakes (S. Vicente Cape) and implications for the 1755 Lisbon earthquake.

    Science.gov (United States)

    Buforn, E.; Pro, C.; Bezzeghoud, M.; Udias, A.

    2012-04-01

    The San Vicente Cape region (SW Iberia) is of great seismological interest due to its tectonic complexity and for the occurrence of the 1755 Lisbon mega-earthquake. A structure capable of generating such large earthquake has not been convincingly found but authors agree with the possible occurrence in the future of a similar earthquake offshore of San Vicente Cape. We have studied the mechanism of three earthquakes in this area: 29 July 2003 (Mw = 5.3), 12 February 2007 (Mw = 6.1) and 17 December 2009 (Mw = 5.5) which throw light on the dynamics of the region. These earthquakes are the largest occurred in the last 40 years at the western of San Vicente Cape. From inversion of body waves and kinematic slip distribution, we have obtained that the three shocks have similar characteristics (dimensions, maximum slip, stress drop, source time function, focal depth and rupture velocity), but we can observe differences on geometry of the rupture that reflect the great seismotectonics complexity of the zone. The 2003 and 2007 focal mechanisms are similar, corresponding to thrusting motion but the 2009 earthquake has dip-slip motion on a vertical plane. The ruptures planes for the three shocks, deduced from the slip distribution, show ruptures on NE-SW planes, with the released energy propagating to NE direction, compatible with the regional horizontal compression in the NW-SE direction produced by the convergence between the Eurasian and African plates. This direction of faulting may be applied to the generation of the 1755 Lisbon earthquake, in terms of a complex rupture along NE-SW trending thrust faults at the Gorringe Bank, the Horseshoe Scarp and the Marques de Pombal Fault, with rupture propagating in NE direction toward the coast of Portugal and which may explain the large damage at Lisbon city.

  12. El pensamiento religioso de Vicente Rocafuerte

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    Fazio Fernández, Mariano

    2006-12-01

    Full Text Available This is evident in his deeds as president and also in his writings, and hence he is a significant example of the predominant mentality of some of the Latin-American intellectual circles in the years between 1820 and 1845. The prevail-ing circumstances in Ecuador at that time forced Rocafuerte to adapt his more radical theoretical positions, although without totally renouncing his liberal and imperial vision that will become the precedent to the confrontation between the Church and the State in the second half of the 19th Century.

    Vicente Rocafuerte (1783-1847, presidente del Ecuador entre 1835 y 1839, presenta un pensamiento religioso rico en matices, que se manifestará en sus acciones de gobierno y en sus escritos, configurando un ejemplo significativo de la mentalidad dominante de algunas élites intelectuales hispanoamericanas entre 1820-1845. Las circunstancias del Ecuador de ese momento obligaron a Rocafuerte a adecuar las posiciones teóricas más radicales, aunque sin desmentir completamente su visión religiosa liberal y regalista, que constituirá un precedente del enfrentamiento entre Iglesia y Estado en la segunda mitad del siglo XIX.

  13. Volcano Preparedness

    Science.gov (United States)

    ... You might feel better to learn that an ‘active’ volcano is one that has erupted in the past ... miles away. If you live near a known volcano, active or dormant, following these tips will help you ...

  14. La comunicación gubernamental de Vicente Fox

    OpenAIRE

    Jorge Bravo

    2009-01-01

    En una primera parte se ofrece una distinción teórica entre la comunicación social y gubernamental, para posteriormente hacer una descripción de la comunicación gubernamental durante el sexenio de Vicente Fox. El artículo remata con el uso que la administración foxista hizo de los tiempos oficiales y el gasto sexenal en comunicación gubernamental.

  15. Vanishing Volcano

    Institute of Scientific and Technical Information of China (English)

    杨树仁

    1995-01-01

    Mauna Loa, the world’s largest active volcano,is sinking into the Pacific Ocean——and it’s taking the main island of Hawaii with it! The problem:The mighty volcano has gained too much weight, says Peter Lipman of the U. S. Geological Survey.

  16. Los textos históricos: testamento de Vicente Azuero

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    Boletín Cultural y Bibliográfico Banco de la República

    1982-10-01

    Full Text Available En el nombre de Dios Todopoderoso amén. Yo el doctor Vicente Azuero, natural de la provincia del Socorro, hijo legitimo de don Ignacio Javier Azuero y de doña Micaela Gregoria Plata, también vecina la misma provincia. Hallándome por la divina misericordia bueno y sano del cuerpo y en mi entero y sano juicio, memoria y entendimiento natural, creyendo y confesando, como firmemente creo y confieso el altísimo inefable e incomprensible misterio de la Beatísima Trinidad, Padre, Hijo y Espíritu Santo.

  17. Dante's volcano

    Science.gov (United States)

    1994-09-01

    This video contains two segments: one a 0:01:50 spot and the other a 0:08:21 feature. Dante 2, an eight-legged walking machine, is shown during field trials as it explores the inner depths of an active volcano at Mount Spurr, Alaska. A NASA sponsored team at Carnegie Mellon University built Dante to withstand earth's harshest conditions, to deliver a science payload to the interior of a volcano, and to report on its journey to the floor of a volcano. Remotely controlled from 80-miles away, the robot explored the inner depths of the volcano and information from onboard video cameras and sensors was relayed via satellite to scientists in Anchorage. There, using a computer generated image, controllers tracked the robot's movement. Ultimately the robot team hopes to apply the technology to future planetary missions.

  18. Características clínicas y videofluoroscópicas de la disfagia orofaríngea en niños entre un mes y cinco años de vida. Hospital Universitario San Vicente de Paúl, Medellín, Colombia, 2004 Clinical and videofluoroscopic characteristics of oropharyngeal dysphagia in children aged 1 month to 5 years. A study in Medellín, Colombia, 2004

    Directory of Open Access Journals (Sweden)

    Dagoberto Nicanor Cabrera Hémer

    2008-01-01

    Full Text Available Objetivo: describir, con base en las evaluaciones clínica y videofluoroscópica, las alteraciones biomecánicas más frecuentes en un grupo de niños entre un mes y cinco años de edad, con sospecha clínica de trastorno de la deglución (TD en el Hospital Universitario San Vicente de Paúl (HUSVP. Metodología: estudio descriptivo de una muestra consecutiva entre enero 1 y diciembre 31 de 2004. La información se obtuvo con una encuesta estructurada. Se analizaron las siguientes variables: edad, sexo, antecedentes personales y evaluaciones clínica y videofluoroscópica de las fases de la deglución. Se hizo análisis estadístico con el software SPSS 11.0. Resultados: se estudiaron 68 pacientes con TD, 40 de ellos (58,8% varones; a 48 se les hizo videofluoroscopia. Cincuenta y cuatro (79,4% tenían edades entre 1-24 meses. Treinta niños (44,1% tenían diagnóstico de parálisis cerebral; once (16,2% presentaban anomalías congénitas estructurales de la orofaringe; 57 (83,8% sufrían de alteraciones gastrointestinales, principalmente rehusar la alimentación y reflujo gastroesofágico. Del total de 68 niños, 27 (39,7% tenían historia de neumonía recurrente y 11 (16,2% presentaban antecedentes de otras condiciones respiratorias. No se encontraron diferencias estadísticamente significativas en la evaluación radiológica de la fase faríngea en los niños con y sin neumonía recurrente. La sensibilidad de la evaluación clínica de la fase oral fue 90% y la de la fase faríngea, 91,6%. No se encontró concordancia entre los exámenes clínico y radiológico del trastorno de deglución (Kappa 5,6%, intervalo de confianza del 95% (-0,042-0,154.

    Objective: to describe, based on clinical and videofluoroscopic evaluations, the most frequent biomechanical alterations in a group of children, aged 1 month to 5 years, with the clinical suspicion of swallowing disorders

  19. What Are Volcano Hazards?

    Science.gov (United States)

    ... Sheet 002-97 Revised March 2008 What Are Volcano Hazards? Volcanoes give rise to numerous geologic and ... as far as 15 miles from the volcano. Volcano Landslides A landslide or debris avalanche is a ...

  20. Clinical and sociodemographic characteristics of children, younger than 13 years, with or without a confirmed diagnosis of pulmonary tuberculosis, at Hospital Universitario San Vicente de Paúl, Medellín, Colombia, 2007-200 Características clínicas y sociodemográficas de niños menores de 13 años con diagnóstico confirmado de tuberculosis pulmonar o sin él, en el Hospital Universitario

    Directory of Open Access Journals (Sweden)

    Angélica Arteaga Arteaga

    2010-08-01

    cm 0cm 0pt; mso-layout-grid-align: none;">Objective: To determine the sociodemographic and clinical characteristics of a group of children with suspicion or confirmed diagnosis of pulmonary tuberculosis.

    Methodology: Fifty six children were studied at Hospital Universitario San Vicente de Paúl, in Medellín, Colombia, between July 2007 and December 2008. Pulmonary

    tuberculosis was confirmed according to the WHO criteria. Information was obtained from the patients themselves, their parents, and the hospital files.

    Results:

  1. Flows correlation of the Tuxtlas, Veracruz volcanic field. Dating by TL of ceramics found in leakages of the San Martin volcano; Correlacion de flujos del campovolcanico de los Tuxtlas, Veracruz. Fechamiento por TL de ceramicas encontradas en derrames del volcan San Martin

    Energy Technology Data Exchange (ETDEWEB)

    Ramirez, A.; Schaaf, P.; Espindola, J.M. [Instituto de Geofisica, UNAM, 04510 Mexico D.F. (Mexico); Zamora, A. [Posgrado en Ciencias de la Tierra, UNAM (Mexico)

    2006-07-01

    In this work the age estimation carried out to archaeological ceramics found inside the spills and one ash deposit both of the San Martin volcano. The technique used for its processing was that of fine grain (4-11 {mu}m). The paleodosis it was calculated using the additive method for the determination of the equivalent dose (Q) and the regenerative method for the determination of the factor by supralineality (l). The samples of ceramic were processed like total sample. In the case of the geologic sample (ash sample) one carries out the separation of minerals in particular glasses at 95% of purity. For the determination of the annual dose rate its were carried out in the place of sampling measurements with a gamma spectrometry equipment, with it the determinations of Uranium, thorium and potassium were obtained, besides the cosmic contribution. Once having both elements (paleodosis and annual dose rate) it was calculated the age of the samples and consequently of the flows, which were stratigraphically correlated. (Author)

  2. Volcanic hazards at Atitlan volcano, Guatemala

    Science.gov (United States)

    Haapala, J.M.; Escobar Wolf, R.; Vallance, James W.; Rose, William I.; Griswold, J.P.; Schilling, S.P.; Ewert, J.W.; Mota, M.

    2006-01-01

    Atitlan Volcano is in the Guatemalan Highlands, along a west-northwest trending chain of volcanoes parallel to the mid-American trench. The volcano perches on the southern rim of the Atitlan caldera, which contains Lake Atitlan. Since the major caldera-forming eruption 85 thousand years ago (ka), three stratovolcanoes--San Pedro, Toliman, and Atitlan--have formed in and around the caldera. Atitlan is the youngest and most active of the three volcanoes. Atitlan Volcano is a composite volcano, with a steep-sided, symmetrical cone comprising alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs. Eruptions of Atitlan began more than 10 ka [1] and, since the arrival of the Spanish in the mid-1400's, eruptions have occurred in six eruptive clusters (1469, 1505, 1579, 1663, 1717, 1826-1856). Owing to its distance from population centers and the limited written record from 200 to 500 years ago, only an incomplete sample of the volcano's behavior is documented prior to the 1800's. The geologic record provides a more complete sample of the volcano's behavior since the 19th century. Geologic and historical data suggest that the intensity and pattern of activity at Atitlan Volcano is similar to that of Fuego Volcano, 44 km to the east, where active eruptions have been observed throughout the historical period. Because of Atitlan's moderately explosive nature and frequency of eruptions, there is a need for local and regional hazard planning and mitigation efforts. Tourism has flourished in the area; economic pressure has pushed agricultural activity higher up the slopes of Atitlan and closer to the source of possible future volcanic activity. This report summarizes the hazards posed by Atitlan Volcano in the event of renewed activity but does not imply that an eruption is imminent. However, the recognition of potential activity will facilitate hazard and emergency preparedness.

  3. July 1973 ground survey of active Central American volcanoes

    Science.gov (United States)

    Stoiber, R. E. (Principal Investigator); Rose, W. I., Jr.

    1973-01-01

    The author has identified the following significant results. Ground survey has shown that thermal anomalies of various sizes associated with volcanic activity at several Central American volcanoes should be detectable from Skylab. Anomalously hot areas of especially large size (greater than 500 m in diameter) are now found at Santiaguito and Pacaya volcanoes in Guatemala and San Cristobal in Nicaragua. Smaller anomalous areas are to be found at least seven other volcanoes. This report is completed after ground survey of eleven volcanoes and ground-based radiation thermometry mapping at these same points.

  4. Santorini Volcano

    Science.gov (United States)

    Druitt, T.H.; Edwards, L.; Mellors, R.M.; Pyle, D.M.; Sparks, R.S.J.; Lanphere, M.; Davies, M.; Barreirio, B.

    1999-01-01

    Santorini is one of the most spectacular caldera volcanoes in the world. It has been the focus of significant scientific and scholastic interest because of the great Bronze Age explosive eruption that buried the Minoan town of Akrotiri. Santorini is still active. It has been dormant since 1950, but there have been several substantial historic eruptions. Because of this potential risk to life, both for the indigenous population and for the large number of tourists who visit it, Santorini has been designated one of five European Laboratory Volcanoes by the European Commission. Santorini has long fascinated geologists, with some important early work on volcanoes being conducted there. Since 1980, research groups at Cambridge University, and later at the University of Bristol and Blaise Pascal University in Clermont-Ferrand, have collected a large amount of data on the stratigraphy, geochemistry, geochronology and petrology of the volcanics. The volcanic field has been remapped at a scale of 1:10 000. A remarkable picture of cyclic volcanic activity and magmatic evolution has emerged from this work. Much of this work has remained unpublished until now. This Memoir synthesizes for the first time all the data from the Cambridge/Bristol/Clermont groups, and integrates published data from other research groups. It provides the latest interpretation of the tectonic and magmatic evolution of Santorini. It is accompanied by the new 1:10 000 full-colour geological map of the island.

  5. Pontificio Colegio Español de San José de Roma. Aproximación a su historia [Reseña

    OpenAIRE

    Tineo, P. (Primitivo)

    2011-01-01

    Reseña de Vicente Cárcel Ortí– Lope Rubio Parrado, "Pontificio Colegio Español de San José de Roma. Aproximación a su historia", Pontificio Colegio Español, Roma, 2010, Ed. Sígueme, Salamanca 2010, 400 pp.

  6. Pontificio Colegio Español de San José de Roma. Aproximación a su historia [Reseña

    OpenAIRE

    Tineo, P. (Primitivo)

    2011-01-01

    Reseña de Vicente Cárcel Ortí– Lope Rubio Parrado, "Pontificio Colegio Español de San José de Roma. Aproximación a su historia", Pontificio Colegio Español, Roma, 2010, Ed. Sígueme, Salamanca 2010, 400 pp.

  7. St. Vicent Ferrer’s Catalán Sermon on Saint Mary Magdalene

    Directory of Open Access Journals (Sweden)

    Ferreiro, Alberto

    2010-06-01

    Full Text Available Vicent Ferrer is without question one of the most compelling and prolific Dominican preachers of the late Middle Ages. Although his preaching mission transpired in many places he especially carried out much of it in France. In France we witness, particularly in Provence, the emergence of the cult of Mary Magdalene that was vigorously promoted by the Dominicans. Vicent Ferrer not surprisingly dedicated this Catalán sermon to Mary Magdalene whom he proposed as a model of the Imitatio Christi for all Christians to follow, not just women in particular. This article seeks to situate this sermon in its late medieval context in order to unpack the theological and moral messages that Vicent sought to convey to his audience.

    Vicente Ferrer es, sin duda, uno de los predicadores dominicos más atractivos y prolíficos del bajo medievo. A pesar de que su misión de predicación se produjo en muchos lugares, gran parte de esa misión se llevó a cabo especialmente en Francia. En Francia, particularmente en la Provenza, somos testigos del surgimiento del culto a María Magdalena, promovido vigorosamente por los dominicos. No es sorprendente, Vicente Ferrer dedicó este sermón en catalán a María Magdalena, a quien propuso como modelo de la Imitatio Christi, para que todos los cristianos lo siguieran, no sólo para las mujeres en particular. Este artículo pretende situar este sermón en su contexto del siglo XIV con el fin de descomprimir los mensajes teológicos y morales que Vicente trató de transmitir a su público.

  8. Análisis Musical de la Obra para Piano de Vicente Asencio

    OpenAIRE

    Montesinos Comas, Eduardo

    2009-01-01

    Vicente (Vicent) Asencio Ruano fue un compositor que debe ser encuadrado dentro de las postrimerías del movimiento nacionalista español y particularmente del valenciano. Mucho más que la cita folclórica, empleó, asimilándolos, los elementos que le confieren personalidad propia; aportando elegancia y refinamiento a nuestra música de raíz folclórica que generó su inventiva. De los procedimientos técnicos compositivos de su época utilizó exclusivamente aquellos que favorecieran esta tendencia. E...

  9. Edad dorada y construcción de la realidad en las columnas de Manuel Vicent

    OpenAIRE

    Rubino, Atilio Raúl

    2011-01-01

    El objetivo de este trabajo es analizar una selección de columnas de Manuel Vicent publicadas en A favor del placer. Cuaderno de Bitácora para náufragos de hoy, de 1993 que reúne columnas aparecidas en El País durante los cinco años anteriores. Las columnas de Vicent se diferencian del estilo periodístico por el uso de elementos literarios. Pero esto no sólo incluye a la forma sino también al sentido que otorga a la realidad, producto de los mismos procedimientos. Nos centraremos en particula...

  10. Huellas de una escritura escatológica: El proceso creativo de "Lavabos" de Manuel Vicent

    Directory of Open Access Journals (Sweden)

    Federico Gerhardt

    2008-11-01

    Full Text Available The purpose of this article is to analyze the creative process of "Lavabos", a column written by Manuel Vicent in year 2000 in El País, and then published in the book Nadie muere la víspera, in 2004. The first instance of this work consists in the decipherment and transcription of the rough drafts of the column, and, on a second instance, the edited versions of the text are examined and compared to those preparatory materials in order to underline and analyze the significant variants that they present. Finally, the column is connected to some aspects of Vicent's poetics

  11. Marxist functionalism in medicine: a critique of the work of Vicente Navarro on health and medicine.

    Science.gov (United States)

    Reidy, A

    1984-01-01

    A detailed examination is made of the writings of Vicente Navarro dealing with health and medicine. Following a statement of criticisms these are examined in detail with reference to sources. The paper concludes with a review of Navarro's writing on Chile which is seen as an example of how a specific brand of deterministic functionalism can be reinforced by a particular political experience.

  12. Análisis de egresados no graduados en la Universidad Laica Vicente Rocafuerte de Guayaquil.

    Directory of Open Access Journals (Sweden)

    Holger Álava

    2016-06-01

    titulados de la Universidad Laica Vicente Rocafuerte de Guayaquil (ULVRG; se utilizaron las bases de datos del Departamento de Planificación y Evaluación de la ULVRG, y se observó que el 44.14% de los egresados no culminaron su titulación durante el período 2005 - 2010.

  13. Global Volcano Locations Database

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NGDC maintains a database of over 1,500 volcano locations obtained from the Smithsonian Institution Global Volcanism Program, Volcanoes of the World publication. The...

  14. A Scientific Excursion: Volcanoes.

    Science.gov (United States)

    Olds, Henry, Jr.

    1983-01-01

    Reviews an educationally valuable and reasonably well-designed simulation of volcanic activity in an imaginary land. VOLCANOES creates an excellent context for learning information about volcanoes and for developing skills and practicing methods needed to study behavior of volcanoes. (Author/JN)

  15. Volcano seismology

    Science.gov (United States)

    Chouet, B.

    2003-01-01

    A fundamental goal of volcano seismology is to understand active magmatic systems, to characterize the configuration of such systems, and to determine the extent and evolution of source regions of magmatic energy. Such understanding is critical to our assessment of eruptive behavior and its hazardous impacts. With the emergence of portable broadband seismic instrumentation, availability of digital networks with wide dynamic range, and development of new powerful analysis techniques, rapid progress is being made toward a synthesis of high-quality seismic data to develop a coherent model of eruption mechanics. Examples of recent advances are: (1) high-resolution tomography to image subsurface volcanic structures at scales of a few hundred meters; (2) use of small-aperture seismic antennas to map the spatio-temporal properties of long-period (LP) seismicity; (3) moment tensor inversions of very-long-period (VLP) data to derive the source geometry and mass-transport budget of magmatic fluids; (4) spectral analyses of LP events to determine the acoustic properties of magmatic and associated hydrothermal fluids; and (5) experimental modeling of the source dynamics of volcanic tremor. These promising advances provide new insights into the mechanical properties of volcanic fluids and subvolcanic mass-transport dynamics. As new seismic methods refine our understanding of seismic sources, and geochemical methods better constrain mass balance and magma behavior, we face new challenges in elucidating the physico-chemical processes that cause volcanic unrest and its seismic and gas-discharge manifestations. Much work remains to be done toward a synthesis of seismological, geochemical, and petrological observations into an integrated model of volcanic behavior. Future important goals must include: (1) interpreting the key types of magma movement, degassing and boiling events that produce characteristic seismic phenomena; (2) characterizing multiphase fluids in subvolcanic

  16. Volcanoes: Nature's Caldrons Challenge Geochemists.

    Science.gov (United States)

    Zurer, Pamela S.

    1984-01-01

    Reviews various topics and research studies on the geology of volcanoes. Areas examined include volcanoes and weather, plate margins, origins of magma, magma evolution, United States Geological Survey (USGS) volcano hazards program, USGS volcano observatories, volcanic gases, potassium-argon dating activities, and volcano monitoring strategies.…

  17. Cardeais, Reis e Senhores pelas cartas (1615-1654 de D. Vicente Nogueira

    Directory of Open Access Journals (Sweden)

    João Carlos Serafim

    2014-01-01

    Full Text Available It was recently published by CITCEM the correspondence to and from D. Vicente Nogueira - a collection of 120 letters written for about 40 years, between September 1615 and May 1654. The chronological predisposition, the crossing with the related letters decisively contributed to a proper understanding of texts and contexts... It was clear its monumentality, its importance for the Portuguese culture of the time, seen from Rome, Paris and Lisbon. In this article, we will make a re-reading of this estate looking for, on the one hand, what he says about life, relationships, moods, joys and despair of D. Vicente Nogueira; and, on other hand, what news on the Roman Curia on the Portuguese politics and diplomacy and on particular procedures as the Inquisition - often so discordant than those used in Rome...

  18. San Francisco District Laboratory (SAN)

    Data.gov (United States)

    Federal Laboratory Consortium — Program Capabilities Food Analysis SAN-DO Laboratory has an expert in elemental analysis who frequently performs field inspections of materials. A recently acquired...

  19. Foci of Volcanoes

    Energy Technology Data Exchange (ETDEWEB)

    Yokoyama, I.

    1974-01-01

    One may assume a center of volcanic activities beneath the edifice of an active volcano, which is here called the focus of the volcano. Sometimes it may be a ''magma reservoir''. Its depth may differ with types of magma and change with time. In this paper, foci of volcanoes are discussed from the viewpoints of four items: (1) Geomagnetic changes related with volcanic activities; (2) Crustal deformations related with volcanic activities; (3) Magma transfer through volcanoes; and (4) Subsurface structure of calderas.

  20. San Francisco District Laboratory (SAN)

    Data.gov (United States)

    Federal Laboratory Consortium — Program CapabilitiesFood Analysis SAN-DO Laboratory has an expert in elemental analysis who frequently performs field inspections of materials. A recently acquired...

  1. Serrano, Vicente, Naturaleza muerta. La mirada estética y el laberinto moderno

    OpenAIRE

    Acosta, Emiliano

    2015-01-01

    En Naturaleza muerta Vicente Serrano, profesor de filosofía en la Universidad Austral de Chile y reconocido especialista en la filosofía del idealismo y romanticismo alemán, ofrece un nuevo capítulo de sus investigaciones iniciadas en La herida de Spinoza (Premio Anagrama Ensayo 2011). Al igual que en su premiado ensayo sobre el autor de la Ética Serrano vuelve en este nuevo libro sobre un problema que entiende como esencial para comprender nuestro tiempo: la ausencia de aquella naturaleza qu...

  2. Vicente Leñero y el fracaso de su inspector

    OpenAIRE

    Clemens A. Franken K.

    2010-01-01

    Luego de exponer brevemente la obra literaria del escritor Vicente Leñero y su lugar dentro de literatura mexicana, se analiza, en su novela posmoderna Los albañiles, la conducta de los personajes sospechosos, la figura y el método de investigación del detective y de sus colaboradores que fracasan en su búsqueda de la verdad, la crítica social y cultural de la sociedad mexicana de los años sesenta y aspectos formales como, por ejemplo, el lenguaje, el narrador y la forma de asimilación.After ...

  3. Vicente Leñero y el fracaso de su inspector

    OpenAIRE

    2010-01-01

    Luego de exponer brevemente la obra literaria del escritor Vicente Leñero y su lugar dentro de literatura mexicana, se analiza, en su novela posmoderna Los albañiles, la conducta de los personajes sospechosos, la figura y el método de investigación del detective y de sus colaboradores que fracasan en su búsqueda de la verdad, la crítica social y cultural de la sociedad mexicana de los años sesenta y aspectos formales como, por ejemplo, el lenguaje, el narrador y la forma de asimilación.After ...

  4. Tan lejos, estando tan cerca: el epistolario entre Max Aub y Vicente Aleixandre

    OpenAIRE

    Sánchez-Zapatero, J. (Javier)

    2016-01-01

    El artículo analiza la correspondencia postal que, entre 1958 y 1971, mantuvieron Max Aub y Vicente Aleixandre. Además de reflejar los principales temas del epistolario (proyectos comunes, valoración que cada autor hace de la obra del otro, confesiones personales, reflexiones sobre literatura y escritores, etc.), el artículo enfatiza la importancia de la comunicación privada como espacio de diálogo intelectual entre la España del interior y la del exilio durante la dictadura. The paper is ...

  5. Sindrome de Burnout en estudiantes del internado rotativo del Hospital Vicente Corral Moscoso. Octubre 2010

    OpenAIRE

    2012-01-01

    Objetivo: determinar la frecuencia del Síndrome de Burnout en los estudiantes del internado rotativo del Hospital Vicente Corral Moscoso y la frecuencia de variables sociodemográficas y laborales. Metodología: estudio descriptivo de 54 estudiantes del internado rotativo. Se incluyen a todos los que laboraban al momento del estudio y se excluyeron a los del ciclo comunitario. Se empleó encuesta anónima sobre características sociodemográficas, laborables y la escala de Burnout...

  6. Son de mar : Aproximación al universo narrativo de Manuel Vicent

    OpenAIRE

    Ferrer, Margarita Maria

    2014-01-01

    Son de mar –premio Alfaguara 1999– es una novela que se ubica aproximadamente “nel mezzo del camin” de la producción narrativa de Manuel Vicent, a 33 años de la publicación de su primer obra, El resuello (1966). Son de mar es una novela de la madurez, y en ella podemos analizar algunas cuestiones que caracterizan el universo narrativo de Vicent, universo que incluye novelas, relatos, artículos y columnas periodísticas recopiladas y publicadas en libros. El término universo apunta a una noción...

  7. Volcanoes - Direct Download

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This map layer includes Holocene volcanoes, which are those thought to be active in the last 10,000 years, that are within an extended area of the northern...

  8. Italian active volcanoes

    Institute of Scientific and Technical Information of China (English)

    RobertoSantacroce; RenawCristofolini; LuigiLaVolpe; GiovanniOrsi; MauroRosi

    2003-01-01

    The eruptive histories, styles of activity and general modes of operation of the main active Italian volcanoes,Etna, Vulcano, Stromboli, Vesuvio, Campi Flegrei and Ischia, are described in a short summary.

  9. [The relic in the Panels of São Vicente de Fora].

    Science.gov (United States)

    Goyri-O'Neill, João; Camisão-Soares, Artur; Neves Marques, Cláudia

    2013-01-01

    The Panels of São Vicente de Fora, a polyptych dated from 1470 to 1480, are a work composed of 6 panels, authored by Nuno Gonçalves, a painter of King Afonso V. This work reveals one of the most remarkable collective portraits of European painting, making this polyptych an inexhaustible source of readings and interpretations, fueling a secular controversy. The present work aims analyzing precise an iconographic anatomical image repainted in the 6th panel, or the panel of the Relic. This consists of a central image within a structure shown by a red figure with special reverence. The investigation conducted and justification was based on direct observation and comparative analysis of iconographic data collected in the Museum of Antique Art. The bone pieces were selected at the Museum of Anatomy, Department of Anatomy, Faculty of Medical Sciences, New University of Lisbon, and the comparative analyses performed by two observers, with further analysis of the images obtained in the National Museum of Ancient Art using specific software. After watching these, it was concluded that this representation of a relic in the Panels of São Vicente is an iconic representation of an Occipital bone, fractured at its lower edge, being evident, almost complete, its vertical portion or scale.

  10. Erotismo y Música Para La Escena: El Género Sicaliptico: Vicente Lleó Balbestre

    Directory of Open Access Journals (Sweden)

    José Salvador Blasco Magraner

    2015-01-01

    Full Text Available A principios del siglo XX, el género sicalíptico, es decir el erotismo y lo picante, comenzó a invadir los proscenios de aquellos coliseos en donde se representaba el género chico. El compositor valenciano Vicente Lleó Balbastre se convirtió en la figura de referencia de esta modalidad teatral; con obras tan insignes como La Corte de Faraón, opereta bíblica estrenada en 1910 en el teatro Eslava de Madrid,a la sazón el templo de la sicalipsis, y de la que se llegaron a realizar setecientas setenta y dos representaciones. Este artículo investiga la incidencia del género sicalíptico en los escenarios teatrales líricos madrileños a través de la biografía del maestro Vicente Lleó, uno de los máximos exponentes del género chico.

  11. Vicente Leñero y el fracaso de su inspector

    Directory of Open Access Journals (Sweden)

    Clemens A Franken K

    2010-01-01

    Full Text Available Luego de exponer brevemente la obra literaria del escritor Vicente Leñero y su lugar dentro de literatura mexicana, se analiza, en su novela posmoderna Los albañiles, la conducta de los personajes sospechosos, la figura y el método de investigación del detective y de sus colaboradores que fracasan en su búsqueda de la verdad, la crítica social y cultural de la sociedad mexicana de los años sesenta y aspectos formales como, por ejemplo, el lenguaje, el narrador y la forma de asimilación.After presenting the literary work of Vicente Leñero and his place in the mexican literature, this article analyzes, within his postmodern novel Los albañiles, the behavior of the suspicious characters, the figure and the investigation method of the detective and his collaborators who fail to look for the truth, the social and cultural criticism of the mexican society in the seventies, along with formal aspects, namely the language, the narrator and the assimilation method.

  12. San Marino.

    Science.gov (United States)

    1985-02-01

    San Marino, an independent republic located in north central Italy, in 1983 had a population of 22,206 growing at an annual rate of .9%. The literacy rate is 97% and the infant mortality rate is 9.6/1000. The terrain is mountainous and the climate is moderate. According to local tradition, San Marino was founded by a Christian stonecutter in the 4th century A.D. as a refuge against religious persecution. Its recorded history began in the 9th century, and it has survived assaults on its independence by the papacy, the Malatesta lords of Rimini, Cesare Borgia, Napoleon, and Mussolini. An 1862 treaty with the newly formed Kingdom of Italy has been periodically renewed and amended. The present government is an alliance between the socialists and communists. San Marino has had its own statutes and governmental institutions since the 11th century. Legislative authority at present is vested in a 60-member unicameral parliament. Executive authority is exercised by the 11-member Congress of State, the members of which head the various administrative departments of the goverment. The posts are divided among the parties which form the coalition government. Judicial authority is partly exercised by Italian magistrates in civil and criminal cases. San Marino's policies are tied to Italy's and political organizations and labor unions active in Italy are also active in San Marino. Since World War II, there has been intense rivalry between 2 political coalitions, the Popular Alliance composed of the Christian Democratic Party and the Independent Social Democratic Party, and the Liberty Committee, coalition of the Communist Party and the Socialist Party. San Marino's gross domestic product was $137 million and its per capita income was $6290 in 1980. The principal economic activities are farming and livestock raising, along with some light manufacturing. Foreign transactions are dominated by tourism. The government derives most of its revenue from the sale of postage stamps to

  13. Cook Inlet and Kenai Peninsula, Alaska ESI: VOLCANOS (Volcano Points)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains the locations of volcanos in Cook Inlet and Kenai Peninsula, Alaska. Vector points in the data set represent the location of the volcanos....

  14. Clima organizacional en la E.S.E. Hospital San Vicente de Montenegro Quíndio 2015

    OpenAIRE

    Echeverry Rios, Claudia; Echeverry Moreno, Claudia Lorena; Moreno Rodríguez, Marco Antonio; Beltrán Cardenas, William

    2015-01-01

    Tesis (Especialista en administración de la salud).Universidad Católica de Manizales. Facultad de Salud.2015 Las dinámicas organizacionales que se viven actualmente, hacen que las personas que están inmersas en las organizaciones se sometan constantemente a situaciones cambiantes e interacciones diarias con diversas situaciones a nivel de relaciones interpersonales, comunicación, calidad del trabajo, toma de decisiones, horizonte institucional, procesos de cambio y tipo de liderazgo, las c...

  15. Volcanoes: Coming Up from Under.

    Science.gov (United States)

    Science and Children, 1980

    1980-01-01

    Provides specific information about the eruption of Mt. St. Helens in March 1980. Also discusses how volcanoes are formed and how they are monitored. Words associated with volcanoes are listed and defined. (CS)

  16. Organizational changes at Earthquakes & Volcanoes

    Science.gov (United States)

    Gordon, David W.

    1992-01-01

    Primary responsibility for the preparation of Earthquakes & Volcanoes within the Geological Survey has shifted from the Office of Scientific Publications to the Office of Earthquakes, Volcanoes, and Engineering (OEVE). As a consequence of this reorganization, Henry Spall has stepepd down as Science Editor for Earthquakes & Volcanoes(E&V).

  17. Hawaii's volcanoes revealed

    Science.gov (United States)

    Eakins, Barry W.; Robinson, Joel E.; Kanamatsu, Toshiya; Naka, Jiro; Smith, John R.; Takahashi, Eiichi; Clague, David A.

    2003-01-01

    Hawaiian volcanoes typically evolve in four stages as volcanism waxes and wanes: (1) early alkalic, when volcanism originates on the deep sea floor; (2) shield, when roughly 95 percent of a volcano's volume is emplaced; (3) post-shield alkalic, when small-volume eruptions build scattered cones that thinly cap the shield-stage lavas; and (4) rejuvenated, when lavas of distinct chemistry erupt following a lengthy period of erosion and volcanic quiescence. During the early alkalic and shield stages, two or more elongate rift zones may develop as flanks of the volcano separate. Mantle-derived magma rises through a vertical conduit and is temporarily stored in a shallow summit reservoir from which magma may erupt within the summit region or be injected laterally into the rift zones. The ongoing activity at Kilauea's Pu?u ?O?o cone that began in January 1983 is one such rift-zone eruption. The rift zones commonly extend deep underwater, producing submarine eruptions of bulbous pillow lava. Once a volcano has grown above sea level, subaerial eruptions produce lava flows of jagged, clinkery ?a?a or smooth, ropy pahoehoe. If the flows reach the ocean they are rapidly quenched by seawater and shatter, producing a steep blanket of unstable volcanic sediment that mantles the upper submarine slopes. Above sea level then, the volcanoes develop the classic shield profile of gentle lava-flow slopes, whereas below sea level slopes are substantially steeper. While the volcanoes grow rapidly during the shield stage, they may also collapse catastrophically, generating giant landslides and tsunami, or fail more gradually, forming slumps. Deformation and seismicity along Kilauea's south flank indicate that slumping is occurring there today. Loading of the underlying Pacific Plate by the growing volcanic edifices causes subsidence, forming deep basins at the base of the volcanoes. Once volcanism wanes and lava flows no longer reach the ocean, the volcano continues to submerge, while

  18. Vicente Blasco Ibáñez (1867-1928): viaje por Oriente y Egipto

    OpenAIRE

    Lara Peinado, Federico

    2005-01-01

    Con este artículo se pretende rememorar los viajes efectuados a Turquía (1907) y años después al país del Nilo (1924) por el famoso novelista Vicente Blasco Ibáñez (1867-1928). Sus impresiones, la historia de los países visitados, la descripción de sus ciudades y paisajes tomaron cuerpo en las obras tituladas Oriente y La vuelta al mundo de un novelista. Blasco Ibáñez supo resumir la historia de Constantinopla así como la de Egipto -especialmente su antigüedad- con sencillas palabras...

  19. Nuevas noticias sobre las pinturas de Vicente Carducho para el convento de Trinitarios Descalzos de Madrid

    Directory of Open Access Journals (Sweden)

    de Carlos Varona, Mª. Cruz

    1999-12-01

    Full Text Available This article presents new information regarding Vicente Garducho's paintings for the high altar and side altars of the Madrid Monastery of the barefoot Trinitarians as well as his twelve paintings of the Life of St. John of Mata, the founder of the Trinitarian order. Carducho's sources for the latter paintings are shown to be a series of prints of scenes from the Life of St. John of Mata published in Paris in 1633, one year before the painter signed his contract with the Trinitarian Monastery of Madrid to paint his series. The article also offers news facts regarding the fortunes of Carducho' s paintings after the Disestablishment of the Monasteries in 1835.No disponible.

  20. Historia y poesía en la obra de Vicente Quirarte

    OpenAIRE

    Ballester Pardo, Ignacio

    2016-01-01

    Vicente Quirarte (Ciudad de México, 1954) es un poeta que historia México. Su padre, el historiador Martín Quirarte, le presentó «las viejas calles de la Ciudad de México, escenarios naturales de la Historia». Fruto de esta relación entre Historia e historia fue su tesis doctoral Elogio de la calle. Biografía literaria de la Ciudad de México. 1850-1992 (2001), así como las prosas de Un paraguas y una máquina de coser (2010); pero es en la poesía de Como a veces la vida (2000), Nombre sin aire...

  1. Vicente Blasco Ibáñez (1867-1928): viaje por Oriente y Egipto

    OpenAIRE

    Lara Peinado, Federico

    2005-01-01

    Con este artículo se pretende rememorar los viajes efectuados a Turquía (1907) y años después al país del Nilo (1924) por el famoso novelista Vicente Blasco Ibáñez (1867-1928). Sus impresiones, la historia de los países visitados, la descripción de sus ciudades y paisajes tomaron cuerpo en las obras tituladas Oriente y La vuelta al mundo de un novelista. Blasco Ibáñez supo resumir la historia de Constantinopla así como la de Egipto -especialmente su antigüedad- con sencillas palabras...

  2. Le facteur humain. Réinventer notre rapport à la technologie de Vicente

    Directory of Open Access Journals (Sweden)

    Jacques Leplat

    2005-11-01

    Full Text Available Kim Vicente est connu du milieu ergonomique pour son très bon ouvrage « Cognitive work analysis » qui manifeste à la fois son expertise et son talent pédagogique. Ingénieur de formation, il a enseigné ensuite à l’université en tant que « professeur en ingénierie des facteurs humains ». Professeur invité au MIT et conseiller à la NASA, il est l’auteur de nombreuses publications de recherche qu’on rangerait dans l’ergonomie cognitive. Le présent ouvrage, qu’il a publié en anglais en 2003, est d...

  3. LA RISA TRANSOCEÁNICA DE VICENTE HUIDOBRO Y HANS ARP. IRONÍA Y PARODIA COMO FUNDAMENTO DE LA ESCRITURA A CUATRO MANOS DE TRES INMENSAS NOVELAS

    National Research Council Canada - National Science Library

    Giuseppe Gatti

    2014-01-01

      Theobjective of the present study is to analyze the use of the ironic procedures and the parodic discursive modalities that Vicente Huidobro uses in Tres inmensas novelas, a short book of three brief...

  4. LA RISA TRANSOCEÁNICA DE VICENTE HUIDOBRO Y HANS ARP. IRONÍA Y PARODIA COMO FUNDAMENTO DE LA ESCRITURA A CUATRO MANOS DE TRES INMENSAS NOVELAS

    National Research Council Canada - National Science Library

    Giuseppe Gatti

    2014-01-01

    Theobjective of the present study is to analyze the use of the ironic procedures and the parodic discursive modalities that Vicente Huidobro uses in Tres inmensas novelas, a short book of three brief...

  5. Scientific training and professional practice in Vicente Cervantes Mendo’s Spain

    Directory of Open Access Journals (Sweden)

    Pastor Villegas, José

    2010-12-01

    Full Text Available Vicente Cervantes Mendo (Ledrada, Salamanca, 1758-México, 1829 was a famous Spanish Mexican scientific; he is today heritage of Spain and Mexico. As a continuation of two recent articles on his life at Spain, the present study deals with his scientific formation at Madrid, as pharmacist and as botanist, as well as on his professional activity. Two documents of Casimiro Gómez Ortega, principal professor of the Real Jardín Botánico de Madrid, dated in 1786 and related with the Real Expedición Botánica a Nueva España (1787-1803, have served to establish conclusions which clarify the subjects studied and correct mistakes.

    Vicente Cervantes Mendo (Ledrada, Salamanca, 1758-México, 1829 fue un insigne científico hispanomexicano; hoy es patrimonio de España y México. Como una continuación de dos artículos recientes sobre su vida en España, este artículo trata de su formación científica, como farmacéutico y como botánico, y de su ejercicio profesional en Madrid. Dos informes de Casimiro Gómez Ortega de 1786, catedrático primero del Real Jardín Botánico de Madrid, en relación con la Real Expedición Botánica a Nueva España (1787-1803, han servido para establecer conclusiones que precisan los aspectos estudiados y corrigen errores.

  6. Proceso y ejecución de Vicente Talens Inglá

    Directory of Open Access Journals (Sweden)

    Antonio Ramírez Navarro

    2012-06-01

    Full Text Available Este artículo traza un resumen biográfico de Vicente Talens Inglá, militante comunista y gobernador civil de Almería entre 1937 y 1938. Anarquista, masón, bailarín en la compañía de Isadora Duncan, modelo de desnudo artístico, Talens es un personaje pintoresco tanto por su actuación política como por su fascinante trayectoria vital. A pesar de haber liberado a decenas de presos derechistas fue detenido en el puerto de Alicante y condenado a muerte. Las siguientes páginas se centran en su proceso judicial, en el que las dos acusaciones más graves fueron hechas por dos personas a las que había salvado la vida. Palabras clave: Guerra civil, gobernador civil, PCE, represión franquista. _____________________ Abstracts This article draw up a biographical summary of Vicente Talens Inglá communist militant and civil governor of Almería between 1937 and 1938. Anarchist, mason, dancer in Isadora Duncan company, artistic nude model, Talens is a colorful character not only by his political action but also by his fascinating life story. Despite having released dozens of prisoners wing right, he was arrested at the port of Alicante and sentenced to death. The following pages are focused on his trial, in which the two most serious allegations were made by two people who were saved by him. Keywords: Spanish Civil War, civil governor, PCE, Francoist repression.

  7. Amores intertextuales y parodias posmodernistas: Vicente Molina Foix y la poesía

    Directory of Open Access Journals (Sweden)

    Gala, Candelas

    2010-12-01

    Full Text Available Taking as a point of departure the two poetry books, Los espías del realista y Vanas penas de amor, that Vicente Molina Foix published in 1990 and 1998, respectively, this essay analyzes the role of the ironic glance the poetic speaker casts on the literary, artistic and cultural models firmly rooted in the analytical-referential system of tradition. A careful reading of specific poems from both collections reveals Molina Foix’s use of parodic and inter-textual strategies to debunk the monumentality of such discourses, not so much to ridicule or do away with them, but to show their incongruence in the modern context and at the level of the individual person.Tomando como punto de partida los dos libros de poesía, Los espías del realista y Vanas penas de amor, que Vicente Molina Foix publica en 1990 y 1998, respectivamente, este ensayo analiza el papel de la mirada irónica que el hablante poético dirige a los modelos literarios, artísticos y culturales sólidamente establecidos en el sistema analítico y referencial de la tradición. La lectura atenta de poemas específicos procedentes de ambas colecciones revela el uso que hace Molina Foix de estrategias paródicas e intertextuales para desbancar la monumentalidad de dichos discursos con el fin no tanto de descartarlos y ridiculizarlos, sino más bien de mostrar su incongruencia en el contexto moderno y a nivel de la persona individual.

  8. Santa Maria Volcano, Guatemala

    Science.gov (United States)

    2002-01-01

    The eruption of Santa Maria volcano in 1902 was one of the largest eruptions of the 20th century, forming a large crater on the mountain's southwest flank. Since 1922, a lava-dome complex, Santiaguito, has been forming in the 1902 crater. Growth of the dome has produced pyroclastic flows as recently as the 2001-they can be identified in this image. The city of Quezaltenango (approximately 90,000 people in 1989) sits below the 3772 m summit. The volcano is considered dangerous because of the possibility of a dome collapse such as one that occurred in 1929, which killed about 5000 people. A second hazard results from the flow of volcanic debris into rivers south of Santiaguito, which can lead to catastrophic flooding and mud flows. More information on this volcano can be found at web sites maintained by the Smithsonian Institution, Volcano World, and Michigan Tech University. ISS004-ESC-7999 was taken 17 February 2002 from the International Space Station using a digital camera. The image is provided by the Earth Sciences and Image Analysis Laboratory at Johnson Space Center. Searching and viewing of additional images taken by astronauts and cosmonauts is available at the NASA-JSC Gateway to

  9. Anatomy of a volcano

    NARCIS (Netherlands)

    Wassink, J.

    2011-01-01

    The Icelandic volcano Eyjafjallajökull caused major disruption in European airspace last year. According to his co-author, Freysteinn Sigmundsson, the reconstruction published in Nature six months later by aerospace engineering researcher, Dr Andy Hooper, opens up a new direction in volcanology. “W

  10. Catalogue of Icelandic Volcanoes

    Science.gov (United States)

    Ilyinskaya, Evgenia; Larsen, Gudrun; Gudmundsson, Magnus T.; Vogfjord, Kristin; Pagneux, Emmanuel; Oddsson, Bjorn; Barsotti, Sara; Karlsdottir, Sigrun

    2016-04-01

    The Catalogue of Icelandic Volcanoes is a newly developed open-access web resource in English intended to serve as an official source of information about active volcanoes in Iceland and their characteristics. The Catalogue forms a part of an integrated volcanic risk assessment project in Iceland GOSVÁ (commenced in 2012), as well as being part of the effort of FUTUREVOLC (2012-2016) on establishing an Icelandic volcano supersite. Volcanic activity in Iceland occurs on volcanic systems that usually comprise a central volcano and fissure swarm. Over 30 systems have been active during the Holocene (the time since the end of the last glaciation - approximately the last 11,500 years). In the last 50 years, over 20 eruptions have occurred in Iceland displaying very varied activity in terms of eruption styles, eruptive environments, eruptive products and the distribution lava and tephra. Although basaltic eruptions are most common, the majority of eruptions are explosive, not the least due to magma-water interaction in ice-covered volcanoes. Extensive research has taken place on Icelandic volcanism, and the results reported in numerous scientific papers and other publications. In 2010, the International Civil Aviation Organisation (ICAO) funded a 3 year project to collate the current state of knowledge and create a comprehensive catalogue readily available to decision makers, stakeholders and the general public. The work on the Catalogue began in 2011, and was then further supported by the Icelandic government and the EU through the FP7 project FUTUREVOLC. The Catalogue of Icelandic Volcanoes is a collaboration of the Icelandic Meteorological Office (the state volcano observatory), the Institute of Earth Sciences at the University of Iceland, and the Civil Protection Department of the National Commissioner of the Iceland Police, with contributions from a large number of specialists in Iceland and elsewhere. The Catalogue is built up of chapters with texts and various

  11. Catalogue of Icelandic volcanoes

    Science.gov (United States)

    Ilyinskaya, Evgenia; Larsen, Gudrun; Vogfjörd, Kristin; Tumi Gudmundsson, Magnus; Jonsson, Trausti; Oddsson, Björn; Reynisson, Vidir; Barsotti, Sara; Karlsdottir, Sigrun

    2015-04-01

    Volcanic activity in Iceland occurs on volcanic systems that usually comprise a central volcano and fissure swarm. Over 30 systems have been active during the Holocene. In the last 100 years, over 30 eruptions have occurred displaying very varied activity in terms of eruption styles, eruptive environments, eruptive products and their distribution. Although basaltic eruptions are most common, the majority of eruptions are explosive, not the least due to magma-water interaction in ice-covered volcanoes. Extensive research has taken place on Icelandic volcanism, and the results reported in scientific papers and other publications. In 2010, the International Civil Aviation Organisation funded a 3 year project to collate the current state of knowledge and create a comprehensive catalogue readily available to decision makers, stakeholders and the general public. The work on the Catalogue began in 2011, and was then further supported by the Icelandic government and the EU. The Catalogue forms a part of an integrated volcanic risk assessment project in Iceland (commenced in 2012), and the EU FP7 project FUTUREVOLC (2012-2016), establishing an Icelandic volcano Supersite. The Catalogue is a collaborative effort between the Icelandic Meteorological Office (the state volcano observatory), the Institute of Earth Sciences at the University of Iceland, and the Icelandic Civil Protection, with contributions from a large number of specialists in Iceland and elsewhere. The catalogue is scheduled for opening in the first half of 2015 and once completed, it will be an official publication intended to serve as an accurate and up to date source of information about active volcanoes in Iceland and their characteristics. The Catalogue is an open web resource in English and is composed of individual chapters on each of the volcanic systems. The chapters include information on the geology and structure of the volcano; the eruption history, pattern and products; the known precursory signals

  12. Cytogenotoxicity biomarkers in fat snook Centropomus parallelus from Cananéia and São Vicente estuaries, SP, Brazil

    Directory of Open Access Journals (Sweden)

    Aline A. Kirschbaum

    2009-01-01

    Full Text Available The aquatic environment receives many contaminants that can induce damages at the molecular, biochemical, cellular and physiological levels. Centropomus parallelus , an important food resource for local populations, is a predator fish that feeds on small fishes and benthic invertebrates, thus being vulnerable to the bioconcentration and biomagnification processes. This study aimed to evaluate cytogenotoxic responses in erythrocytes from C. parallelus juveniles collected in the Cananéia and São Vicente estuaries, both in winter and in summer. After anesthesia, blood samples were collected by caudal puncture. Blood smears were prepared on glass slides and stained with May-Grünwald-Giemsa dye. Two thousand cells were analyzed per slide (1000x, and nuclear abnormalities (NA and micronuclei (MN were scored. The São Vicente sample showed MN and NA frequencies (%/1000 cells of 0.325 and 3.575, in winter, and of 0.125 and 2.935 in summer respectively; the Cananéia sample showed frequencies of 0.0325 and 0.03, in winter, and of 0.065 and 0.355 in summer, respectively. The rates found in São Vicente were significantly higher than those found in Cananéia, evidencing that the levels of pollution in that estuary were high enough to induce genetic damages.

  13. Cytogenotoxicity biomarkers in fat snook Centropomus parallelus from Cananéia and São Vicente estuaries, SP, Brazil

    Science.gov (United States)

    2009-01-01

    The aquatic environment receives many contaminants that can induce damages at the molecular, biochemical, cellular and physiological levels. Centropomus parallelus, an important food resource for local populations, is a predator fish that feeds on small fishes and benthic invertebrates, thus being vulnerable to the bioconcentration and biomagnification processes. This study aimed to evaluate cytogenotoxic responses in erythrocytes from C. parallelus juveniles collected in the Cananéia and São Vicente estuaries, both in winter and in summer. After anesthesia, blood samples were collected by caudal puncture. Blood smears were prepared on glass slides and stained with May-Grünwald-Giemsa dye. Two thousand cells were analyzed per slide (1000x), and nuclear abnormalities (NA) and micronuclei (MN) were scored. The São Vicente sample showed MN and NA frequencies (%/1000 cells) of 0.325 and 3.575, in winter, and of 0.125 and 2.935 in summer respectively; the Cananéia sample showed frequencies of 0.0325 and 0.03, in winter, and of 0.065 and 0.355 in summer, respectively. The rates found in São Vicente were significantly higher than those found in Cananéia, evidencing that the levels of pollution in that estuary were high enough to induce genetic damages. PMID:21637661

  14. Geology of Kilauea volcano

    Energy Technology Data Exchange (ETDEWEB)

    Moore, R.B. (Geological Survey, Denver, CO (United States). Federal Center); Trusdell, F.A. (Geological Survey, Hawaii National Park, HI (United States). Hawaiian Volcano Observatory)

    1993-08-01

    This paper summarizes studies of the structure, stratigraphy, petrology, drill holes, eruption frequency, and volcanic and seismic hazards of Kilauea volcano. All the volcano is discussed, but the focus is on its lower east rift zone (LERZ) because active exploration for geothermal energy is concentrated in that area. Kilauea probably has several separate hydrothermal-convection systems that develop in response to the dynamic behavior of the volcano and the influx of abundant meteoric water. Important features of some of these hydrothermal-convection systems are known through studies of surface geology and drill holes. Observations of eruptions during the past two centuries, detailed geologic mapping, radiocarbon dating, and paleomagnetic secular-variation studies indicate that Kilauea has erupted frequently from its summit and two radial rift zones during Quaternary time. Petrologic studies have established that Kilauea erupts only tholeiitic basalt. Extensive ash deposits at Kilauea's summit and on its LERZ record locally violent, but temporary, disruptions of local hydrothermal-convection systems during the interaction of water or steam with magma. Recent drill holes on the LERZ provide data on the temperatures of the hydrothermal-convection systems, intensity of dike intrusion, porosity and permeability, and an increasing amount of hydrothermal alteration with depth. The prehistoric and historic record of volcanic and seismic activity indicates that magma will continue to be supplied to deep and shallow reservoirs beneath Kilauea's summit and rift zones and that the volcano will be affected by eruptions and earthquakes for many thousands of years. 71 refs., 2 figs.

  15. 4D volcano gravimetry

    Science.gov (United States)

    Battaglia, Maurizio; Gottsmann, J.; Carbone, D.; Fernandez, J.

    2008-01-01

    Time-dependent gravimetric measurements can detect subsurface processes long before magma flow leads to earthquakes or other eruption precursors. The ability of gravity measurements to detect subsurface mass flow is greatly enhanced if gravity measurements are analyzed and modeled with ground-deformation data. Obtaining the maximum information from microgravity studies requires careful evaluation of the layout of network benchmarks, the gravity environmental signal, and the coupling between gravity changes and crustal deformation. When changes in the system under study are fast (hours to weeks), as in hydrothermal systems and restless volcanoes, continuous gravity observations at selected sites can help to capture many details of the dynamics of the intrusive sources. Despite the instrumental effects, mainly caused by atmospheric temperature, results from monitoring at Mt. Etna volcano show that continuous measurements are a powerful tool for monitoring and studying volcanoes.Several analytical and numerical mathematical models can beused to fit gravity and deformation data. Analytical models offer a closed-form description of the volcanic source. In principle, this allows one to readily infer the relative importance of the source parameters. In active volcanic sites such as Long Valley caldera (California, U.S.A.) and Campi Flegrei (Italy), careful use of analytical models and high-quality data sets has produced good results. However, the simplifications that make analytical models tractable might result in misleading volcanological inter-pretations, particularly when the real crust surrounding the source is far from the homogeneous/ isotropic assumption. Using numerical models allows consideration of more realistic descriptions of the sources and of the crust where they are located (e.g., vertical and lateral mechanical discontinuities, complex source geometries, and topography). Applications at Teide volcano (Tenerife) and Campi Flegrei demonstrate the

  16. Pairing the Volcano

    CERN Document Server

    Ionica, Sorina

    2011-01-01

    Isogeny volcanoes are graphs whose vertices are elliptic curves and whose edges are $\\ell$-isogenies. Algorithms allowing to travel on these graphs were developed by Kohel in his thesis (1996) and later on, by Fouquet and Morain (2001). However, up to now, no method was known, to predict, before taking a step on the volcano, the direction of this step. Hence, in Kohel's and Fouquet-Morain algorithms, many steps are taken before choosing the right direction. In particular, ascending or horizontal isogenies are usually found using a trial-and-error approach. In this paper, we propose an alternative method that efficiently finds all points $P$ of order $\\ell$ such that the subgroup generated by $P$ is the kernel of an horizontal or an ascending isogeny. In many cases, our method is faster than previous methods. This is an extended version of a paper published in the proceedings of ANTS 2010. In addition, we treat the case of 2-isogeny volcanoes and we derive from the group structure of the curve and the pairing ...

  17. Vicente Blasco Ibáñez (1867-1928: viaje por Oriente y Egipto

    Directory of Open Access Journals (Sweden)

    Lara Peinado, Federico

    2005-04-01

    Full Text Available Con este artículo se pretende rememorar los viajes efectuados a Turquía (1907 y años después al país del Nilo (1924 por el famoso novelista Vicente Blasco Ibáñez (1867-1928. Sus impresiones, la historia de los países visitados, la descripción de sus ciudades y paisajes tomaron cuerpo en las obras tituladas Oriente y La vuelta al mundo de un novelista. Blasco Ibáñez supo resumir la historia de Constantinopla así como la de Egipto -especialmente su antigüedad- con sencillas palabras, sin tecnicismos, haciendo llegar al lector el impacto que le causaron monumentos y ambientes de la ciudad turca en un caso, y las pirámides, tumbas y el paisaje nilotico en otro, además de introducirlo en el alma de sus gentes.…

  18. Italian Volcano Supersites

    Science.gov (United States)

    Puglisi, G.

    2011-12-01

    Volcanic eruptions are among the geohazards that may have a substantial economic and social impact, even at worldwide scale. Large populated regions are prone to volcanic hazards worldwide. Even local phenomena may affect largely populated areas and in some cases even megacities, producing severe economic losses. On a regional or global perspective, large volcanic eruptions may affect the climate for years with potentially huge economic impacts, but even relatively small eruptions may inject large amounts of volcanic ash in the atmosphere and severely affect air traffic over entire continents. One of main challenges of the volcanological community is to continuously monitor and understand the internal processes leading to an eruption, in order to give substantial contributions to the risk reduction. Italian active volcanoes constitute natural laboratories and ideal sites where to apply the cutting-edge volcano observation systems, implement new monitoring systems and to test and improve the most advanced models and methods for investigate the volcanic processes. That's because of the long tradition of volcanological studies resulting into long-term data sets, both in-situ and from satellite systems, among the most complete and accurate worldwide, and the large spectrum of the threatening volcanic phenomena producing high local/regional/continental risks. This contribution aims at presenting the compound monitoring systems operating on the Italian active volcanoes, the main improvements achieved during the recent studies direct toward volcanic hazard forecast and risk reductions and the guidelines for a wide coordinated project aimed at applying the ideas of the GEO Supersites Initiative at Mt. Etna and Campi Flegrei / Vesuvius areas.

  19. Níveis de radioatividade natural decorrente do radônio no complexo rochoso da Serra de São Vicente, SP Levels of natural radon-radioactivity in the São Vicente, SP, rock massif

    Directory of Open Access Journals (Sweden)

    Adilson Lima Marques

    2006-06-01

    Full Text Available OBJETIVO: Realizar monitoração passiva e integrada do radônio em várias amostras de águas, solos e locais fechados do complexo rochoso da Serra de São Vicente, SP, com o intuito de avaliar a distribuição de ocorrência deste gás radioativo naquele local. MATERIAIS E MÉTODOS: A técnica utilizada consistiu em expor detectores plásticos policarbonatos (SSNTD do tipo Makrofol E, na geometria de copo fechado, ao radônio emanado das amostras de águas coletadas dos solos e ao acumulado em ambientes internos (residências e cavidades nas rochas existentes no complexo rochoso de São Vicente. RESULTADOS: Os valores obtidos para os teores de radônio variaram entre 8,1 e 36 Bq/l para as fontes de água natural, entre 68 e 610 Bq/m³ nas residências, entre 0,41 e 3,46 kBq/m³nos solos e entre 0,72 e 5,85 kBq/m³ nas cavidades do Maciço de São Vicente. CONCLUSÃO: Para algumas residências e na maioria das fontes de água estudadas, os teores de radônio encontrados neste trabalho estiveram acima dos limites máximos propostos por organismos internacionais. Recomenda-se, portanto, que ações de intervenção sejam implementadas para a dissipação do radônio, tanto nessas residências como durante a coleta das águas para fins de consumo.OBJECTIVE: The objective of this study was to perform a passive and time-integrated radon monitoring in several soil and water samples and indoor environments of the São Vicente, SP, rock massif with the purpose of evaluating the presence and distribution of that radioactive gas in this region. MATERIALS AND METHODS: The technique employed consisted of exposing Makrofol E-type polycarbonate plastic detectors (SSNTD, using the closed cup method, to radon emanated from ground water samples and to the gas accumulated inside indoor environments (dwellings and inside rock cavities existing in the São Vicente rock massif. RESULTS: The radon concentration values obtained ranged from 8.1 to 36 Bq/l in natural

  20. Ruiz Volcano: Preliminary report

    Science.gov (United States)

    Ruiz Volcano, Colombia (4.88°N, 75.32°W). All times are local (= GMT -5 hours).An explosive eruption on November 13, 1985, melted ice and snow in the summit area, generating lahars that flowed tens of kilometers down flank river valleys, killing more than 20,000 people. This is history's fourth largest single-eruption death toll, behind only Tambora in 1815 (92,000), Krakatau in 1883 (36,000), and Mount Pelée in May 1902 (28,000). The following briefly summarizes the very preliminary and inevitably conflicting information that had been received by press time.

  1. Preliminary volcano-hazard assessment for Iliamna Volcano, Alaska

    Science.gov (United States)

    Waythomas, Christopher F.; Miller, Thomas P.

    1999-01-01

    Iliamna Volcano is a 3,053-meter-high, ice- and snow-covered stratovolcano in the southwestern Cook Inlet region about 225 kilometers southwest of Anchorage and about 100 kilometers northwest of Homer. Historical eruptions of Iliamna Volcano have not been positively documented; however, the volcano regularly emits steam and gas, and small, shallow earthquakes are often detected beneath the summit area. The most recent eruptions of the volcano occurred about 300 years ago, and possibly as recently as 90-140 years ago. Prehistoric eruptions have generated plumes of volcanic ash, pyroclastic flows, and lahars that extended to the volcano flanks and beyond. Rock avalanches from the summit area have occurred numerous times in the past. These avalanches flowed several kilometers down the flanks and at least two large avalanches transformed to cohesive lahars. The number and distribution of known volcanic ash deposits from Iliamna Volcano indicate that volcanic ash clouds from prehistoric eruptions were significantly less voluminous and probably less common relative to ash clouds generated by eruptions of other Cook Inlet volcanoes. Plumes of volcanic ash from Iliamna Volcano would be a major hazard to jet aircraft using Anchorage International Airport and other local airports, and depending on wind direction, could drift at least as far as the Kenai Peninsula and beyond. Ashfall from future eruptions could disrupt oil and gas operations and shipping activities in Cook Inlet. Because Iliamna Volcano has not erupted for several hundred years, a future eruption could involve significant amounts of ice and snow that could lead to the formation of large lahars and downstream flooding. The greatest hazards in order of importance are described below and shown on plate 1.

  2. Elementary analysis of data from Tianchi Volcano

    Institute of Scientific and Technical Information of China (English)

    LIU Guo-ming; ZHANG Heng-rong; KONG Qing-jun; WU Cheng-zhi; GUO Feng; ZHANG Chao-fan

    2004-01-01

    Tianchi Volcano is the largest potential erupticve volcano in China. Analyzing these data on seismic monitoring, deformation observation and water chemistry investigation gained from the Tianchi Volcano Observatory (TVO), the authors consider that the Tianchi Volcano is in going into a new flourishing time.

  3. La inclusión de los estudiantes con discapacidades en la universidad laica vicente rocafuerte de guayaquil

    Directory of Open Access Journals (Sweden)

    Lorena Bodero

    2016-06-01

    El presente documento presenta una recopilación preliminar de datos sobre el número de estudiantes discapacitados que estudian en la Universidad Laica Vicente Rocafuerte de la ciudad de Guayaquil, información que se utilizará en el proyecto que está desarrollando el grupo de investigadores de la ULVR, y la cual permitirá implementar un modelo de apoyo para garantizar la inclusión de los estudiantes con discapacidades en esta Institución.

  4. Paralelismos entre el ajedrez y la novela La vida que se va de Vicente Leñero

    OpenAIRE

    Sundby, Flor de Maria Serrano de

    2010-01-01

    En este estudio analizo cómo el autor mexicano Vicente Leñero escribe su novela La vida que se va estableciendo un paralelismo entre la creación de su novela y el juego de ajedrez. La novela cuenta la historia de una anciana ajedrecista que al final de su vida aprovecha su encuentro con un periodista para contarle las diferentes vidas que hubiera podido vivir si en vez de haber tomado una decisión hubiera optado por otra contraria. Esencialmente, el estudio está dividido en dos par...

  5. Juan Vicente Gómez y la arquitectura de su tiempo: aportación de Venezuela al lenguaje neocolonial

    OpenAIRE

    Darias Príncipe, Alberto

    2010-01-01

    International audience; Después de la Guerra de la Independencia, la desmembración de la Gran Colombia y las luchas internas por la definición del tipo de estado deseado, Venezuela no alcanza una madurez política hasta le llegada al poder de Antonio Guzmán Blanco. Por su parte, la dictadura de Juan Vicente Gómez manipula las obras públicas para, de este modo, confirmar el lema de Orden y Progreso.Así, desde el neogótico inicial del renovado Panteón Bolivariano al lenguaje colonial del monumen...

  6. New host and locality records for Tetrameres (Gynaecophila spirospiculum Pinto & Vicente, 1995 (Nematoda: Tetrameridae, with new morphological data

    Directory of Open Access Journals (Sweden)

    Digiani María Celina

    2001-01-01

    Full Text Available We report the finding of Tetrameres spirospiculum Pinto & Vicente, 1995 from Theristicus melanopis melanopis (Threskiornithidae from Patagonia, Argentina. These constitute new host and locality records. We propose the assignation of this species to the subgenus T. (Gynaecophila Gubanov, 1950, based on the presence of labia and the absence of cuticular flanges at the anterior end. Some new morphological data are provided, such as the arrangement of cuticular spines and the presence of a pair of somatic papillae at beginning of posterior third of body length. T. (G. spirospiculum may probably be regarded as specific to birds of the genus Theristicus.

  7. Paralelismos entre el ajedrez y la novela La vida que se va de Vicente Leñero

    OpenAIRE

    2010-01-01

    En este estudio analizo cómo el autor mexicano Vicente Leñero escribe su novela La vida que se va estableciendo un paralelismo entre la creación de su novela y el juego de ajedrez. La novela cuenta la historia de una anciana ajedrecista que al final de su vida aprovecha su encuentro con un periodista para contarle las diferentes vidas que hubiera podido vivir si en vez de haber tomado una decisión hubiera optado por otra contraria. Esencialmente, el estudio está dividido en dos par...

  8. Omalgia postcolecistectomìa laparoscópica en pacientes aleatorizados de los hospitales Vicente Corral Moscoso y José Carrasco Arteaga. 2013

    OpenAIRE

    2014-01-01

    Objetivo: determinar la intensidad de omalgia asociada a colecistectomía laparoscópica con neumoperitoneo a presión de 12 mmHg en los Hospitales Vicente Corral Moscoso y José Carrasco Arteaga. Metodología: estudio ensayo clínico controlado. Se consideró el universo a pacientes sometidos a colecistectomía laparoscópica electiva en los hospitales Vicente Corral Moscoso y José Carrasco Arteaga. Muestra: se calculó con IC del 95%. Potencia estadística 80%, omalgia postcolecistectomía laparoscó...

  9. L’utopie inaugurale ou les prémices du mythe chez Vicente Huidobro

    Directory of Open Access Journals (Sweden)

    Stéphanie Dumont

    2012-10-01

    Full Text Available A partir de una lectura de la obra “primitiva” del poeta chileno Vicente Huidobro, el análisis busca establecer la coherencia y la unidad de la primera etapa de constitución de una obra. En estas primeras producciones (1912-1925, Huidobro desarrolla estrategias de escritura que refuerza de un poemario a otro, poniendo en escena figuras poéticas de una estatura tan grandiosa como el proyecto de escritura que ellas animan. La ambición o la utopía “creacionista”, reivindicada en numerosos manifiestos huidobrianos del período, constituye el hilo conductor de este proyecto original, paralelo al que estructura la arquitectura semántica y conceptual de los poemarios. Este sueño inaugural se encarna de manera particular en Adán (1916, primera definición sublimada del Poeta “hacedor” de mundos ; un Adán que se determina también como anticipación de Altazor (1931. Es en este corpus primitivo que comienza a escribirse la historia - o la prehistoria – de un mito en perpetua evolución.A partir d’une lecture des recueils « primitifs » du poète chilien Vicente Huidobro, l’analyse vise à établir une cohérence et une unité au sein de la démarche initiale de fondation d’une œuvre. Ces premières productions (1912-1925 développent des stratégies d’écriture renforcées d’un recueil à l’autre, et mettent en scène des figures poétiques à la stature aussi démesurément grandiose que le projet d’écriture qu’elles soutiennent. De ce projet original, l’ambition ou l’utopie « créationniste », revendiquée dans les nombreux manifestes huidobriens de la période, est la parallèle directrice structurant l’architecture sémantique et conceptuelle des recueils. Ce rêve de l’inauguralité se voit porté plus particulièrement par la figure précoce de l’Adán de 1916, première définition sublimée du Poète « faiseur » de mondes ; un Adán qui se détermine aussi comme anticipation de l

  10. Mount Rainier active cascade volcano

    Science.gov (United States)

    1994-01-01

    Mount Rainier is one of about two dozen active or recently active volcanoes in the Cascade Range, an arc of volcanoes in the northwestern United States and Canada. The volcano is located about 35 kilometers southeast of the Seattle-Tacoma metropolitan area, which has a population of more than 2.5 million. This metropolitan area is the high technology industrial center of the Pacific Northwest and one of the commercial aircraft manufacturing centers of the United States. The rivers draining the volcano empty into Puget Sound, which has two major shipping ports, and into the Columbia River, a major shipping lane and home to approximately a million people in southwestern Washington and northwestern Oregon. Mount Rainier is an active volcano. It last erupted approximately 150 years ago, and numerous large floods and debris flows have been generated on its slopes during this century. More than 100,000 people live on the extensive mudflow deposits that have filled the rivers and valleys draining the volcano during the past 10,000 years. A major volcanic eruption or debris flow could kill thousands of residents and cripple the economy of the Pacific Northwest. Despite the potential for such danger, Mount Rainier has received little study. Most of the geologic work on Mount Rainier was done more than two decades ago. Fundamental topics such as the development, history, and stability of the volcano are poorly understood.

  11. Mount Rainier active cascade volcano

    Science.gov (United States)

    Mount Rainier is one of about two dozen active or recently active volcanoes in the Cascade Range, an arc of volcanoes in the northwestern United States and Canada. The volcano is located about 35 kilometers southeast of the Seattle-Tacoma metropolitan area, which has a population of more than 2.5 million. This metropolitan area is the high technology industrial center of the Pacific Northwest and one of the commercial aircraft manufacturing centers of the United States. The rivers draining the volcano empty into Puget Sound, which has two major shipping ports, and into the Columbia River, a major shipping lane and home to approximately a million people in southwestern Washington and northwestern Oregon. Mount Rainier is an active volcano. It last erupted approximately 150 years ago, and numerous large floods and debris flows have been generated on its slopes during this century. More than 100,000 people live on the extensive mudflow deposits that have filled the rivers and valleys draining the volcano during the past 10,000 years. A major volcanic eruption or debris flow could kill thousands of residents and cripple the economy of the Pacific Northwest. Despite the potential for such danger, Mount Rainier has received little study. Most of the geologic work on Mount Rainier was done more than two decades ago. Fundamental topics such as the development, history, and stability of the volcano are poorly understood.

  12. Soufriere Hills Volcano

    Science.gov (United States)

    2002-01-01

    In this ASTER image of Soufriere Hills Volcano on Montserrat in the Caribbean, continued eruptive activity is evident by the extensive smoke and ash plume streaming towards the west-southwest. Significant eruptive activity began in 1995, forcing the authorities to evacuate more than 7,000 of the island's original population of 11,000. The primary risk now is to the northern part of the island and to the airport. Small rockfalls and pyroclastic flows (ash, rock and hot gases) are common at this time due to continued growth of the dome at the volcano's summit.This image was acquired on October 29, 2002 by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA's Terra satellite. With its 14 spectral bands from the visible to the thermal infrared wavelength region, and its high spatial resolution of 15 to 90 meters (about 50 to 300 feet), ASTER images Earth to map and monitor the changing surface of our planet.ASTER is one of five Earth-observing instruments launched December 18, 1999, on NASA's Terra satellite. The instrument was built by Japan's Ministry of Economy, Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products.The broad spectral coverage and high spectral resolution of ASTER will provide scientists in numerous disciplines with critical information for surface mapping, and monitoring of dynamic conditions and temporal change. Example applications are: monitoring glacial advances and retreats; monitoring potentially active volcanoes; identifying crop stress; determining cloud morphology and physical properties; wetlands evaluation; thermal pollution monitoring; coral reef degradation; surface temperature mapping of soils and geology; and measuring surface heat balance.Dr. Anne Kahle at NASA's Jet Propulsion Laboratory, Pasadena, California, is the U.S. Science team leader; Bjorn Eng of JPL is the project manager. The Terra mission is part of NASA

  13. Possibility of groundwater as an alternative for citric culture recovery in Sao Vicente District, Araruama, Rio de Janeiro State, Brazil; Possibilidade de agua subterranea como alternativa na recuperacao da citricultura no Distrito de Sao Vicente, Municipio de Araruama, RJ

    Energy Technology Data Exchange (ETDEWEB)

    Mello, Leonidas Castro [Universidade Federal Rural do Rio de Janeiro, RJ (Brazil)

    1995-12-31

    Results and perspectives of the Geoelectrical Resistivity Sounding Survey in Eastern Baixada Fluminense, Rio de Janeiro State, run by DEGEO/IA/UFRRJ (Rural University of Rio de Janeiro, Agronomy Institute, Geology Dept.) for the Municipal Prefecture of Araruama in Sao Vicente District, RJ, where underground is needed to support irrigation projects, mainly of citrus, are presented. Geophysical data interpretation resulted in a 900 m long geoelectrical cross section illustrating that groundwater subsurface conditions in the surveyed area comprise: the 1400-1800 ohm.m resistivimetric regions associated to the granitic-gneissic embasement`s fracturing/faulting zones; the 215 ohm.m resistivimetric region associated to the embasement`s type C weathering horizon; and all others resistivimetric regions, below the water table, ranging from 27-227 phm.m, associated to an averaging 35 m thick and course sedimentary package overlaying the crystalline. Finally it is possible to conclude that groundwater in Sao Vicente, District of Araruama, RJ, must not be considered a possibility. It must be considered a reality, and surely the only alternative for restoration and expansion of the citriculture in this rural area of Rio de Janeiro State. (author). 4 refs., 1 fig

  14. 77 FR 54811 - Safety Zone; TriRock San Diego, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2012-09-06

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; TriRock San Diego, San Diego Bay, San Diego... safety zone upon the navigable waters of the San Diego Bay, San Diego, CA, in support of a bay swim in San Diego Harbor. This safety zone is necessary to provide for the safety of the participants, crew...

  15. 78 FR 58878 - Safety Zone; San Diego Shark Fest Swim; San Diego Bay, San Diego, CA

    Science.gov (United States)

    2013-09-25

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Shark Fest Swim; San Diego Bay, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone upon the navigable waters of the San Diego Bay, San Diego, CA, in support of San...

  16. 78 FR 53243 - Safety Zone; TriRock San Diego, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2013-08-29

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; TriRock San Diego, San Diego Bay, San Diego... temporary safety zone upon the navigable waters of the San Diego Bay, San Diego, CA, in support of a... Bryan Gollogly, Waterways Management, U.S. Coast Guard Sector San Diego; telephone (619) 278-7656, email...

  17. Characteristics of Hawaiian volcanoes

    Science.gov (United States)

    Poland, Michael P.; Takahashi, T. Jane; Landowski, Claire M.

    2014-01-01

    Founded in 1912 at the edge of the caldera of Kīlauea Volcano, HVO was the vision of Thomas A. Jaggar, Jr., a geologist from the Massachusetts Institute of Technology, whose studies of natural disasters around the world had convinced him that systematic, continuous observations of seismic and volcanic activity were needed to better understand—and potentially predict—earthquakes and volcanic eruptions. Jaggar summarized the aim of HVO by stating that “the work should be humanitarian” and have the goals of developing “prediction and methods of protecting life and property on the basis of sound scientific achievement.” These goals align well with those of the USGS, whose mission is to serve the Nation by providing reliable scientific information to describe and understand the Earth; minimize loss of life and property from natural disasters; manage natural resources; and enhance and protect our quality of life.

  18. Volcanoes in Eruption - Set 1

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The word volcano is used to refer to the opening from which molten rock and gas issue from Earth's interior onto the surface, and also to the cone, hill, or mountain...

  19. Volcanoes in Eruption - Set 2

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The word volcano is used to refer to the opening from which molten rock and gas issue from Earth's interior onto the surface, and also to the cone, hill, or mountain...

  20. USGS Volcano Notification Service (VNS)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Website provides a subscription service to receive an email when changes occur in the activity levels for monitored U.S. volcanoes and/or when information releases...

  1. GLACIERS OF THE KORYAK VOLCANO

    Directory of Open Access Journals (Sweden)

    T. M. Manevich

    2012-01-01

    Full Text Available The paper presents main glaciological characteristics of present-day glaciers located on the Koryaksky volcano. The results of fieldwork (2008–2009 and high-resolution satellite image analysis let us to specify and complete information on modern glacial complex of Koryaksky volcano. Now there are seven glaciers with total area 8.36 km2. Three of them advance, two are in stationary state and one degrades. Moreover, the paper describes the new crater glacier.

  2. Mahukona: The missing Hawaiian volcano

    Energy Technology Data Exchange (ETDEWEB)

    Garcia, M.O.; Muenow, D.W. (Univ. of Hawaii, Honolulu (USA)); Kurz, M.D. (Woods Hole Oceanographic Institution, MA (USA))

    1990-11-01

    New bathymetric and geochemical data indicate that a seamount west of the island of Hawaii, Mahukona, is a Hawaiian shield volcano. Mahukona has weakly alkalic lavas that are geochemically distinct. They have high {sup 3}He/{sup 4}He ratios (12-21 times atmosphere), and high H{sub 2}O and Cl contents, which are indicative of the early state of development of Hawaiian volcanoes. The He and Sr isotopic values for Mahukona lavas are intermediate between those for lavas from Loihi and Manuna Loa volcanoes and may be indicative of a temporal evolution of Hawaiian magmas. Mahukona volcano became extinct at about 500 ka, perhaps before reaching sea level. It fills the previously assumed gap in the parallel chains of volcanoes forming the southern segment of the Hawaiian hotspot chain. The paired sequence of volcanoes was probably caused by the bifurcation of the Hawaiian mantle plume during its ascent, creating two primary areas of melting 30 to 40 km apart that have persisted for at least the past 4 m.y.

  3. APROXIMACIÓN A LA SEÑALÉPTICA EN EL MUSEO DE HISTORIA DE LA TELECOMUNICACIÓN VICENTE MIRALLES SEGARRA

    OpenAIRE

    LEUS, VALERIYA

    2016-01-01

    [EN] With the final degree of the project set out and it’s purpose, to create an optimal system for posters and signage for the Vicente Miralles Segarra History of Telecommunications Museum , located inside the Superior Technical Telecommunications Engineer School , in the Polytechnic University of Valencia. With t his strategy intended as a means of disseminating preventive conservation of the collectio...

  4. Satellite relay telemetry in the surveillance of active volcanoes and major fault zones

    Science.gov (United States)

    Eaton, J. P.; Ward, P. L.

    1972-01-01

    A review was made of efforts to develop a dense telemetered microearthquake network to study earthquake mechanics along the San Andreas fault and the strain mechanics of the Kilauea Volcano. The principle elements and objectives of the ERTS-A proposal are outlined. Some of the aspects of the earthquake network and the results obtained from it as well as some promising experiments in computerized record processing are discussed.

  5. "Mediterranean volcanoes vs. chain volcanoes in the Carpathians"

    Science.gov (United States)

    Chivarean, Radu

    2017-04-01

    Volcanoes have always represent an attractive subject for students. Europe has a small number of volcanoes and Romania has none active ones. The curricula is poor in the study of volcanoes. We want to make a parallel between the Mediterranean active volcanoes and the old extinct ones in the Oriental Carpathians. We made an comparison of the two regions in what concerns their genesis, space and time distribution, the specific relief and the impact in the landscape, consequences of their activities, etc… The most of the Mediterranean volcanoes are in Italy, in the peninsula in Napoli's area - Vezuviu, Campi Flegrei, Puzzoli, volcanic islands in Tirenian Sea - Ischia, Aeolian Islands, Sicily - Etna and Pantelleria Island. Santorini is located in Aegean Sea - Greece. Between Sicily and Tunisia there are 13 underwater volcanoes. The island called Vulcano, it has an active volcano, and it is the origin of the word. Every volcano in the world is named after this island, just north of Sicily. Vulcano is the southernmost of the 7 main Aeolian Islands, all volcanic in origin, which together form a small island arc. The cause of the volcanoes appears to be a combination of an old subduction event and tectonic fault lines. They can be considered as the origin of the science of volcanology. The volcanism of the Carpathian region is part of the extensive volcanic activity in the Mediterranean and surrounding regions. The Carpathian Neogene/Quaternary volcanic arc is naturally subdivided into six geographically distinct segments: Oas, Gutai, Tibles, Calimani, Gurghiu and Harghita. It is located roughly between the Carpathian thrust-and-fold arc to the east and the Transylvanian Basin to the west. It formed as a result of the convergence between two plate fragments, the Transylvanian micro-plate and the Eurasian plate. Volcanic edifices are typical medium-sized andesitic composite volcanoes, some of them attaining the caldera stage, complicated by submittal or peripheral domes

  6. Mud Volcanoes Formation And Occurrence

    Science.gov (United States)

    Guliyev, I. S.

    2007-12-01

    Mud volcanoes are natural phenomena, which occur throughout the globe. They are found at a greater or lesser scale in Azerbaijan, Turkmenistan, Georgia, on the Kerch and Taman peninsulas, on Sakhalin Island, in West Kuban, Italy, Romania, Iran, Pakistan, India, Burma, China, Japan, Indonesia, Malaysia, New Zealand, Mexico, Colombia, Trinidad and Tobago, Venezuela and Ecuador. Mud volcanoes are most well-developed in Eastern Azerbaijan, where more than 30% of all the volcanoes in the world are concentrated. More than 300 mud volcanoes have already been recognized here onshore or offshore, 220 of which lie within an area of 16,000 km2. Many of these mud volcanoes are particularly large (up to 400 m high). The volcanoes of the South Caspian form permanent or temporary islands, and numerous submarine banks. Many hypotheses have been developed regarding the origin of mud volcanoes. Some of those hypotheses will be examined in the present paper. Model of spontaneous excitation-decompaction (proposed by Ivanov and Guliev, 1988, 2002). It is supposed that one of major factors of the movement of sedimentary masses and formation of hydrocarbon deposits are phase transitions in sedimentary basin. At phase transitions there are abnormal changes of physical and chemical parameters of rocks. Abnormal (high and negative) pressure takes place. This process is called as excitation of the underground environment with periodicity from several tens to several hundreds, or thousand years. The relationship between mud volcanism and the generation of hydrocarbons, particularly methane, is considered to be a critical factor in mud volcano formation. At high flow rates the gas and sediment develops into a pseudo-liquid state and as flow increases the mass reaches the "so-called hover velocity" where mass transport begins. The mass of fluid moves as a quasi-uniform viscous mass through the sediment pile in a piston like manner until expelled from the surface as a "catastrophic eruption

  7. Global Volcano Model

    Science.gov (United States)

    Sparks, R. S. J.; Loughlin, S. C.; Cottrell, E.; Valentine, G.; Newhall, C.; Jolly, G.; Papale, P.; Takarada, S.; Crosweller, S.; Nayembil, M.; Arora, B.; Lowndes, J.; Connor, C.; Eichelberger, J.; Nadim, F.; Smolka, A.; Michel, G.; Muir-Wood, R.; Horwell, C.

    2012-04-01

    Over 600 million people live close enough to active volcanoes to be affected when they erupt. Volcanic eruptions cause loss of life, significant economic losses and severe disruption to people's lives, as highlighted by the recent eruption of Mount Merapi in Indonesia. The eruption of Eyjafjallajökull, Iceland in 2010 illustrated the potential of even small eruptions to have major impact on the modern world through disruption of complex critical infrastructure and business. The effects in the developing world on economic growth and development can be severe. There is evidence that large eruptions can cause a change in the earth's climate for several years afterwards. Aside from meteor impact and possibly an extreme solar event, very large magnitude explosive volcanic eruptions may be the only natural hazard that could cause a global catastrophe. GVM is a growing international collaboration that aims to create a sustainable, accessible information platform on volcanic hazard and risk. We are designing and developing an integrated database system of volcanic hazards, vulnerability and exposure with internationally agreed metadata standards. GVM will establish methodologies for analysis of the data (eg vulnerability indices) to inform risk assessment, develop complementary hazards models and create relevant hazards and risk assessment tools. GVM will develop the capability to anticipate future volcanism and its consequences. NERC is funding the start-up of this initiative for three years from November 2011. GVM builds directly on the VOGRIPA project started as part of the GRIP (Global Risk Identification Programme) in 2004 under the auspices of the World Bank and UN. Major international initiatives and partners such as the Smithsonian Institution - Global Volcanism Program, State University of New York at Buffalo - VHub, Earth Observatory of Singapore - WOVOdat and many others underpin GVM.

  8. Marine litter in the upper São Vicente submarine canyon (SW Portugal): Abundance, distribution, composition and fauna interactions.

    Science.gov (United States)

    Oliveira, Frederico; Monteiro, Pedro; Bentes, Luis; Henriques, Nuno Sales; Aguilar, Ricardo; Gonçalves, Jorge M S

    2015-08-15

    Marine litter has become a worldwide environmental problem, tainting all ocean habitats. The abundance, distribution and composition of litter and its interactions with fauna were evaluated in the upper S. Vicente canyon using video images from 3 remote operated vehicle exploratory dives. Litter was present in all dives and the abundance was as high as 3.31 items100m(-1). Mean abundance of litter over rock bottom was higher than on soft substrate. Mean litter abundance was slightly higher than reported for other canyons on the Portuguese margin, but lower in comparison to more urbanized coastal areas of the world. Lost fishing gear was the prevalent type of litter, indicating that the majority of litter originates from maritime sources, mainly fishing activity. Physical contact with sessile fauna and entanglement of specimens were the major impacts of lost fishing gear. Based on the importance of this region for the local fishermen, litter abundance is expected to increase.

  9. La prensa y la crítica ante el teatro lírico de Vicente Peydró

    OpenAIRE

    José Salvador Blasco Magraner; Francisco Carlos Bueno Camejo

    2013-01-01

    Vicente Peydró Díez fue el creador y principal mantenedor del teatro lírico valenciano inmerso en el movimiento cultural que denominamos Renaixença. Las zarzuelas de Peydró atrajeron a los principales medios de prensa valencianos, donde escribían algunos de los más importantes críticos del momento. En el presente artículo se analizan las críticas de sus obras más significativas a fin de abordar los juicios estético-críticos emitidos por los musicógrafos y sus análisis para comprender mejor la...

  10. Remote Sensing of Active Volcanoes

    Science.gov (United States)

    Francis, Peter; Rothery, David

    The synoptic coverage offered by satellites provides unparalleled opportunities for monitoring active volcanoes, and opens new avenues of scientific inquiry. Thermal infrared radiation can be used to monitor levels of activity, which is useful for automated eruption detection and for studying the emplacement of lava flows. Satellite radars can observe volcanoes through clouds or at night, and provide high-resolution topographic data. In favorable conditions, radar inteferometery can be used to measure ground deformation associated with eruptive activity on a centimetric scale. Clouds from explosive eruptions present a pressing hazard to aviation; therefore, techniques are being developed to assess eruption cloud height and to discriminate between ash and meterological clouds. The multitude of sensors to be launched on future generations of space platforms promises to greatly enhance volcanological studies, but a satellite dedicated to volcanology is needed to meet requirements of aviation safety and volcano monitoring.

  11. Mount Rainier: A decade volcano

    Science.gov (United States)

    Swanson, Donald A.; Malone, Stephen D.; Samora, Barbara A.

    Mount Rainier, the highest (4392 m) volcano in the Cascade Range, towers over a population of more than 2.5 million in the Seattle-Tacoma metropolitan area, and its drainage system via the Columbia River potentially affects another 500,000 residents of southwestern Washington and northwestern Oregon (Figure 1). Mount Rainier is the most hazardous volcano in the Cascades in terms of its potential for magma-water interaction and sector collapse. Major eruptions, or debris flows even without eruption, pose significant dangers and economic threats to the region. Despite such hazard and risk, Mount Rainier has received little study; such important topics as its petrologic and geochemical character, its proximal eruptive history, its susceptibility to major edifice failure, and its development over time have been barely investigated. This situation may soon change because of Mount Rainier's recent designation as a “Decade Volcano.”

  12. Ressenya a Simbor i Roig, Vicent, Ironies de la Modernitat. La ironia del Modernisme al Noucentisme, Barcelona, Publicacions de l’Abadia de Montserrat, 2016, 280 pp., ISBN: 978-84-9883-811-4

    Directory of Open Access Journals (Sweden)

    Moisés Llopis i Alarcon

    2016-06-01

    Full Text Available Review to Simbor i Roig, Vicent, Ironies de la Modernitat. La ironia del Modernisme al Noucentisme, Barcelona, Publicacions de l’Abadia de Montserrat, 2016, 280 pp., ISBN: 978-84-9883-811-4

  13. Systematic radon survey over active volcanoes

    Energy Technology Data Exchange (ETDEWEB)

    Seidel, J.L.; Monnin, M.; Garcia Vindas, J.R. [Centre National de la Recherche Cientifique, Montpellier (France). Lab. GBE; Ricard, L.P.; Staudacher, T. [Observatoire Volcanologique Du Pitou de la Fournaise, La Plaine des Cafres (France)

    1999-08-01

    Data obtained since 1993 on Costa Rica volcanos are presented and radon anomalies recorded before the eruption of the Irazu volcano (December 8, 1994) are discussed. The Piton de la Fournaise volcano is inactive since mid 1992. The influence of the external parameters on the radon behaviour is studied and the type of perturbations induced on short-term measurements are individuate.

  14. Vicente Risco. Etnografía y literatura en la configuración nacional de la identidad gallega

    Directory of Open Access Journals (Sweden)

    Coppel Hidalgo, Carlos

    1998-06-01

    Full Text Available The great figure of Vicente Risco ought to be revised in the process of assessing his extensive ethnographic work, done under the shelter of the incipient Galician nationalism of the early 20th century. Risco's intellectual prominence before the years of the Second Republic enabled him to defend, from traditionalist and culturalist positions, a nationalism founded upon the notion that culture is a distinctive fact. He was joined in this endeavor by other members of his generation. The author, who finds fault with the received interpretation of Risco as a "political man" and of his work as something unrelated to his life, attempts to recuperate this provincial as well as cosmopolitan scholar by showing the coherence that his complex personality, life and work reveal. The author's aim is to find for Risco the place in the history of anthropology that he deserves, beyond any ideological branding.La figura señera de Vicente Risco es objeto de revisión necesaria, como modo de aproximación a la ingente labor etnográfica desplegada a la sombra del incipiente nacionalismo gallego en los albores del siglo. El indiscutible liderazgo intelectual de Risco, hasta la proclamación de la II República, le permitió propiciar junto a sus compañeros de generación, desde posiciones tradicionalistas y culturalistas, un nacionalismo que se apoyaba en la cultura como hecho diferencial. Ahora bien, frente al juicio corriente que reconstruye su figura principalmente como "hombre político" y divorcia su vida de su obra, se ofrece la oportunidad de recuperar críticamente a este intelectual provinciano de espíritu cosmopolita, desde la coherencia que ofrece su intrincada personalidad, su vida y su obra. Para más allá de todo estereotipo ideológico, poder ofrecer a Risco un espacio normalizado en la historia de la antropología.

  15. SAN CARLOS APACHE PAPERS.

    Science.gov (United States)

    ROESSEL, ROBERT A., JR.

    THE FIRST SECTION OF THIS BOOK COVERS THE HISTORICAL AND CULTURAL BACKGROUND OF THE SAN CARLOS APACHE INDIANS, AS WELL AS AN HISTORICAL SKETCH OF THE DEVELOPMENT OF THEIR FORMAL EDUCATIONAL SYSTEM. THE SECOND SECTION IS DEVOTED TO THE PROBLEMS OF TEACHERS OF THE INDIAN CHILDREN IN GLOBE AND SAN CARLOS, ARIZONA. IT IS DIVIDED INTO THREE PARTS--(1)…

  16. San Carlo Operaen

    DEFF Research Database (Denmark)

    Holm, Bent

    2005-01-01

    En indplacering af operahuset San Carlo i en kulturhistorisk repræsentationskontekst med særligt henblik på begrebet napolalità.......En indplacering af operahuset San Carlo i en kulturhistorisk repræsentationskontekst med særligt henblik på begrebet napolalità....

  17. Shallow seismic imaging of flank collapse structures in oceanic island volcanoes: Application to the Western Canary Islands

    Science.gov (United States)

    Sanchez, L.; González, P.; Tiampo, K. F.

    2013-12-01

    Volcanic flank collapse counts among the many hazards associated with volcanic activity. This type of event involves the mobilization of large volumes, producing debris avalanches. It affects mostly oceanic island volcanoes, involving the potential for tsunami occurrence. Geophysical imaging can illuminate subvolcanic features such as volcano-tectonic structures, magmatic plumbing systems or differences in rock type. The most commonly used geophysical methods are gravity, electromagnetics and seismics. In particular, seismic measurements quantify anomalies in seismic waves propagation velocities and can be used to obtain information on the subsurface arrangement of different materials. In the Western Canary Islands, the Cumbre Vieja volcano in La Palma (Canary Islands) has been proposed to be near the collapse stage. Previous geophysical studies that have been carried out on the flank of the volcano comprise gravity and electromagnetic methods. These types of surveys gather information on the deep structures of the volcano (1-2 km). In this project, we complement previous studies by using seismic methods to investigate the near-surface seismic structure of the Cumbre Vieja fault system (La Palma Island) and the structure of the well-developed San Andres fault system (El Hierro Island). We aim to compare the Cumbre Vieja and San Andres fault systems to infer the degree of maturity of collapse structures. We carried out reflection and refraction seismic surveys in order to image approximately the first 10 meters of the subsurface. We used 24 low frequency (4,5 Hz) geophones as receivers and a sledge hammer as the seismic source. The survey lines were located across visible parts of the fault systems at the Cumbre Vieja volcano and the San Andres fault in El Hierro. Here, we present the survey setup and results from the preliminary analysis of the data.

  18. Alaska volcanoes guidebook for teachers

    Science.gov (United States)

    Adleman, Jennifer N.

    2011-01-01

    Alaska’s volcanoes, like its abundant glaciers, charismatic wildlife, and wild expanses inspire and ignite scientific curiosity and generate an ever-growing source of questions for students in Alaska and throughout the world. Alaska is home to more than 140 volcanoes, which have been active over the last 2 million years. About 90 of these volcanoes have been active within the last 10,000 years and more than 50 of these have been active since about 1700. The volcanoes in Alaska make up well over three-quarters of volcanoes in the United States that have erupted in the last 200 years. In fact, Alaska’s volcanoes erupt so frequently that it is almost guaranteed that an Alaskan will experience a volcanic eruption in his or her lifetime, and it is likely they will experience more than one. It is hard to imagine a better place for students to explore active volcanism and to understand volcanic hazards, phenomena, and global impacts. Previously developed teachers’ guidebooks with an emphasis on the volcanoes in Hawaii Volcanoes National Park (Mattox, 1994) and Mount Rainier National Park in the Cascade Range (Driedger and others, 2005) provide place-based resources and activities for use in other volcanic regions in the United States. Along the lines of this tradition, this guidebook serves to provide locally relevant and useful resources and activities for the exploration of numerous and truly unique volcanic landscapes in Alaska. This guidebook provides supplemental teaching materials to be used by Alaskan students who will be inspired to become educated and prepared for inevitable future volcanic activity in Alaska. The lessons and activities in this guidebook are meant to supplement and enhance existing science content already being taught in grade levels 6–12. Correlations with Alaska State Science Standards and Grade Level Expectations adopted by the Alaska State Department of Education and Early Development (2006) for grades six through eleven are listed at

  19. Preliminary volcano-hazard assessment for Augustine Volcano, Alaska

    Science.gov (United States)

    Waythomas, Christopher F.; Waitt, Richard B.

    1998-01-01

    Augustine Volcano is a 1250-meter high stratovolcano in southwestern Cook Inlet about 280 kilometers southwest of Anchorage and within about 300 kilometers of more than half of the population of Alaska. Explosive eruptions have occurred six times since the early 1800s (1812, 1883, 1935, 1964-65, 1976, and 1986). The 1976 and 1986 eruptions began with an initial series of vent-clearing explosions and high vertical plumes of volcanic ash followed by pyroclastic flows, surges, and lahars on the volcano flanks. Unlike some prehistoric eruptions, a summit edifice collapse and debris avalanche did not occur in 1812, 1935, 1964-65, 1976, or 1986. However, early in the 1883 eruption, a portion of the volcano summit broke loose forming a debris avalanche that flowed to the sea. The avalanche initiated a small tsunami reported on the Kenai Peninsula at English Bay, 90 kilometers east of the volcano. Plumes of volcanic ash are a major hazard to jet aircraft using Anchorage International and other local airports. Ashfall from future eruptions could disrupt oil and gas operations and shipping activities in Cook Inlet. Eruptions similar to the historical and prehistoric eruptions are likely in Augustine's future.

  20. Revised volcanic history of the San Juan, Uncompahgre, Silverton, and Lake City calderas in the western San Juan Mountains, Colorado

    Science.gov (United States)

    Lipman, Peter W.; Steven, Thomas A.; Luedke, Robert G.; Burbank, Wilbur

    1973-01-01

    The sequence of mid-Cenozoic volcanic events in the western San Juan Mountains is closely analogous to that elsewhere in the San Juan volcanic field. The Lake Fork, Picayune, and San Juan Formations were erupted from a cluster of central volcanoes from 35 to 30 m.y. ago, when dominant activity shifted to more silicic ash-flow eruptions with accompanying caldera collapses. The Uncompahgre and San Juan calderas, each about 20 km across, formed mainly from eruption of the 28-m.y.-old Sapinero Mesa Tuff. Collapse occurred concurrently with eruption, and intracaldera tuffs accumulated to a thickness of more than 700 m. Both calderas were resurgently domed together; the northeast-trending Eureka graben formed along the distended crest of that dome. The Uncompahgre caldera was then flooded by several 27- to 28-m.y.-old ash-flow sheets from easterly sources, and also by one apparently erupted from the Silverton caldera nested within the older San Juan caldera. The Lake City caldera, located within the older Uncompahgre caldera, formed about 22.5 m.y. ago in response to eruption of the Sunshine Peak Tuff.

  1. Mount Rainier, a decade volcano

    Energy Technology Data Exchange (ETDEWEB)

    Kuehn, S.C.; Hooper, P.R. (Washington State Univ., Pullman, WA (United States). Dept. of Geology); Eggers, A.E. (Univ. of Puget Sound, Tacoma, WA (United States). Dept. of Geology)

    1993-04-01

    Mount Rainier, recently designated as a decade volcano, is a 14,410 foot landmark which towers over the heavily populated southern Puget Sound Lowland of Washington State. It last erupted in the mid-1800's and is an obvious threat to this area, yet Rainier has received little detailed study. Previous work has divided Rainier into two distinct pre-glacial eruptive episodes and one post-glacial eruptive episode. In a pilot project, the authors analyzed 253 well-located samples from the volcano for 27 major and trace elements. Their objective is to test the value of chemical compositions as a tool in mapping the stratigraphy and understanding the eruptive history of the volcano which they regard as prerequisite to determining the petrogenesis and potential hazard of the volcano. The preliminary data demonstrates that variation between flows is significantly greater than intra-flow variation -- a necessary condition for stratigraphic use. Numerous flows or groups of flows can be distinguished chemically. It is also apparent from the small variation in Zr abundances and considerable variation in such ratios as Ba/Nb that fractional crystallization plays a subordinate role to some form of mixing process in the origin of the Mount Rainier lavas.

  2. Vicent Andrés Estellés: la construcció poètica de la identitat valenciana

    Directory of Open Access Journals (Sweden)

    Purificació Mascarell

    2011-10-01

    Full Text Available Cet article aborde la construction de l'identité valencienne dans la poésie de Vicent AndrésEstellés à partir de l'analyse de son style d'écriture (avec un langage proche au populaire et du revise auxthèmes de sa principale oeuvre de contenu nationaliste, le Mural del País Valencià.

  3. Antifascismo: un espacio de encuentro entre el exilio y la política nacional. El caso de Vicente Lombardo Toledano en México (1936-1945)

    OpenAIRE

    2016-01-01

    This article puts forward an original interpretation of antifascism, understood as a transatlantic political culture, focusing upon the case of the union leader Vicente Lombardo Toledano. Between the Spanish Civil War and the Second World War, antifascism in Mexico acquired several meanings, centred on the reinvention of the Mexican Revolution’s legacy, while benefiting from the collaboration between European antifascist exiles and local left-wing circles. Making use of novel sources, this ar...

  4. Vicente Ignacio Imperial Digueri y Trejo : ingeniero militar, marino, urbanista y arquitecto del siglo XVIII

    Directory of Open Access Journals (Sweden)

    Juan Torrejón Chaves

    1989-01-01

    Full Text Available Nacido en Oran el 28 de junio de 1745, fueron sus padres Ignacio Imperial Digueri, oriundo de Cartagena y destinado, a la sazón, como oficial en el Regimiento de Infantería de esta plaza norteafricana, donde alcanzó el grado de comandante de su segundo batallón —puesto que desempeñaba cuando ocurrió su muerte, el 5 de junio de 1769—, y Paula Trejo Monroy y Salcedo, natural de Badajoz, quien falleció con posterioridad a mayo de 1781, posiblemente en la ciudad de Cartagena. Otros hijos del matrimonio fueron: Antonio, Juan Bautista —que se ordenó sacerdote del Orden de Mínimos de San Francisco de Paula—, Manuel, Luisa y Teresa.

  5. El azar de la mujer rubia, de Manuel Vicent: memorias de la transición entre la ficción, la prensa y la historia

    Directory of Open Access Journals (Sweden)

    Sofía Bonino

    2013-12-01

    Full Text Available In the next paper I intend to look the novel written by Manuel Vicent El azar de la mujer rubia. The text is presented to us as a new perspective on the transition, this time structured from a female character from which are drawn the wires of the Spanish history since Franco’s death until the present. However, the reading of the work reveals that the character is in the foreground is not another that Adolfo Suárez and that the material that serves as a starting point is the own journalistic of Manuel Vicent. It would think then this novel as an attempt to save from oblivion those newspaper articles of inestimable value –for having been written at the time that the historical events were unfolding– but also as a work that was presented as novel to reveal the hidden story of a love triangle that directly influenced the history of the country, with a female character that is, for the first time, recovered and processed into heroin. The study will focus on the way in which Vicent retrieves those journalistic texts and in the operations of inclusion of the same in a text that mixes fiction with history to return, once more, to the one of the momentous of the recent Spanish history

  6. Vicente Fox presidential campaing and the model of propaganda in political communication La campaña presidencial de Vicente Fox y el modelo propagandista de comunicación política

    Directory of Open Access Journals (Sweden)

    Adriana BORJAS BENAVENTE

    2010-10-01

    Full Text Available The characteristics of political communication identified by Dominque Wolton can be used to analyse the electoral process of 1988 in Mexico, as public opinion and opinion began to emerge through the exchange between legitimate political actors. The main features of this exchange emerged and were consolidated during the 2000 presidential election campaign, coinciding with the typology developed by Gilles Achache regarding a model of propaganda. The objectives of the paper are to examine the electoral campaign of Vicente Fox of the PAN for the presidency in 2000, and to identify the differences that set it apart from the campaign of other candidates and from the traditional electoral behaviour of previous electoral processes, in order to demonstrate that through the use of techniques of political marketing in the public space, the Fox campaign introduced a new model of propaganda in political communication in Mexico.: Con base en las características atribuidas por Dominique Wolton a la comunicación política, es posible situar el surgimiento pleno de esta última en México durante el proceso electoral de 1988, cuando los discursos de la opinión pública a través de los sondeos comenzaron a introducirse en el espacio público. A partir de entonces, al producirse el intercambio de mensajes entre los actores con legitimidad, empezó a configurarse un modelo de comunicación política, cuyos rasgos esenciales surgieron o se reafirmaron durante la campaña para las elecciones presidenciales de julio de 2000 y que, en tanto coinciden con la tipología establecida por Gilles Achache, corresponden al modelo propagandista. Dar cuenta de la campaña electoral de Vicente Fox, candidato del Partido Acción Nacional a la Presidencia de la República mexicana en el año 2000, establecer las diferencias que representó respecto a las campañas de otros candidatos, así como en relación al comportamiento tradicionalmente observado por los distintos actores

  7. Volcanic gas impacts on vegetation at Turrialba Volcano, Costa Rica

    Science.gov (United States)

    Teasdale, R.; Jenkins, M.; Pushnik, J.; Houpis, J. L.; Brown, D. L.

    2010-12-01

    Turrialba volcano is an active composite stratovolcano that is located approximately 40 km east of San Jose, Costa Rica. Seismic activity and degassing have increased since 2005, and gas compositions reflect further increased activity since 2007 peaking in January 2010 with a phreatic eruption. Gas fumes dispersed by trade winds toward the west, northwest, and southwest flanks of Turrialba volcano have caused significant vegetation kill zones, in areas important to local agriculture, including dairy pastures and potato fields, wildlife and human populations. In addition to extensive vegetative degradation is the potential for soil and water contamination and soil erosion. Summit fumarole temperatures have been measured over 200 degrees C and gas emissions are dominated by SO2; gas and vapor plumes reach up to 2 km (fumaroles and gases are measured regularly by OVSICORI-UNA). A recent network of passive air sampling, monitoring of water temperatures of hydrothermal systems, and soil pH measurements coupled with measurement of the physiological status of surrounding plants using gas exchange and fluorescence measurements to: (1) identify physiological correlations between leaf-level gas exchange and chlorophyll fluorescence measurements of plants under long term stress induced by the volcanic gas emissions, and (2) use measurements in tandem with remotely sensed reflectance-derived fluorescence ratio indices to track natural photo inhibition caused by volcanic gas emissions, for use in monitoring plant stress and photosynthetic function. Results may prove helpful in developing potential land management strategies to maintain the biological health of the area.

  8. Aleutian Islands Coastal Resources Inventory and Environmental Sensitivity Maps: VOLCANOS (Volcano Points)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains point locations of active volcanoes as compiled by Motyka et al., 1993. Eighty-nine volcanoes with eruptive phases in the Quaternary are...

  9. Caracterización de la esclerosis tuberosa en pacientes que consultan al Hospital Universitario San Vicente de Paúl, Medellín, Colombia

    Directory of Open Access Journals (Sweden)

    Dagoberto Nicanor Cabrera Hémer

    2008-11-01

    Full Text Available La esclerosis tuberosa (ET es una enfermedad autosómica dominante, que afecta muchos sistemas y cursa con diversas manifestaciones clínicas, entre ellas epilepsia, retardo mental y lesiones cutáneas. Se hizo un estudio retrospectivo para contribuir a la caracterización de la esclerosis tuberosa en Medellín, Colombia. Se revisaron 21 historias, 62% mujeres y 38% hombres; la edad media al momento del diagnóstico fue 23 meses, todos los pacientes tenían epilepsia y lesiones cutáneas, las crisis más frecuentes fueron las parciales con generalización secundaria (66%, 47% tuvieron espasmos infantiles, la mayoría presentaron dos o más tipos de crisis (90%. Todos los pacientes recibieron anticonvulsivantes, los más frecuentemente utilizados fueron: fenobarbital, ácido valproico, vigabatrina, carbamazepina y clonazepam. En general, la mayoría de los pacientes requirieron varios medicamentos durante la evolución de su enfermedad y los pocos que lograron un adecuado control de la epilepsia, lo hicieron con anticonvulsivantes de primera generación. CONCLUSIÓN:las características de nuestra serie son similares a las reportadas en la literatura mundial. Los antiepilépticos de primera generación siguen siendo la principal herramienta terapéutica para el tratamiento inicial de los pacientes Medellín.

  10. Estudio descriptivo retrospectivo de pacientes candidatos a trasplante de hígado (TH) de la Fundación Hospitalaria San Vicente de Paúl (FHSVP)

    OpenAIRE

    Correa Gonzalo; Juan Carlos Restrepo; Beatriz Uribe; Germán Useche; Jairo Casas

    2001-01-01

    El trasplante hepático (TH) es el tratamiento de elección para pacientes con enfermedad hepática avanzada (EHA). El objetivo fue
    identificar mediante la aplicación de un flujograma establecido por el
    Grupo los pacientes que necesitan un TH y sus características clínicas y demográficas más importantes.

  11. Capilla de la casa de ejercicios de las Hijas de la Caridad de San Vicente de Paúl Barcelona - España

    Directory of Open Access Journals (Sweden)

    Mir Valls, Jorge

    1975-04-01

    Full Text Available Special mention is made in this article of the chapel with oval plan form. It is situated in the bisection of the L-shaped, symmetrically winged body which is the Prayer House. The chapel consists of: basement, with auditorium, ground floor with the actual chapel, vestry and hall; the first floor of the Prayer House communicates directly with the choir. The basic materials are: unfaced concrete, artificial stone and wooden roof, with parabolic tie rods or catenaries, planking, and isolating and waterproofing layers.La capilla, de planta ovalada, es la que se describe especialmente en este artículo. Se halla en la bisectriz del cuerpo en L, de alas simétricas, constituido por la Casa de Ejercicios. Consta de: SEMISOTANO, con salón de actos, y BAJA, con la capilla —propiamente dicha—, sacristía y vestíbulo; desde la PLANTA PRIMERA de la Casa de Ejercicios se accede al coro. Los materiales fundamentales son: hormigón visto, piedra artificial y cubierta de madera, con tirantes o catenarias parabólicas, entablonado y capas aislante e impermeabilizante.

  12. Estudio descriptivo retrospectivo de pacientes candidatos a trasplante de hígado (TH de la Fundación Hospitalaria San Vicente de Paúl (FHSVP

    Directory of Open Access Journals (Sweden)

    Correa Gonzalo

    2001-04-01

    Full Text Available El trasplante hepático (TH es el tratamiento de elección para pacientes con enfermedad hepática avanzada (EHA. El objetivo fue
    identificar mediante la aplicación de un flujograma establecido por el
    Grupo los pacientes que necesitan un TH y sus características clínicas y demográficas más importantes.

  13. Caracterización de la esclerosis tuberosa en pacientes que consultan al Hospital Universitario San Vicente de Paúl, Medellín, Colombia

    OpenAIRE

    Dagoberto Nicanor Cabrera Hémer; Jaime Carrizosa Moog; Olga Juliana Cuéllar; Dionis Vallejo Mesa; José Vladimir Tobón Areiza; José William Cornejo Ochoa

    2008-01-01

    La esclerosis tuberosa (ET) es una enfermedad autosómica dominante, que afecta muchos sistemas y cursa con diversas manifestaciones clínicas, entre ellas epilepsia, retardo mental y lesiones cutáneas. Se hizo un estudio retrospectivo para contribuir a la caracterización de la esclerosis tuberosa en Medellín, Colombia. Se revisaron 21 historias, 62% mujeres y 38% hombres; la edad media al momento del diagnóstico fue 23 meses, todos los pacientes tenían epilepsia y lesiones cutáneas, las crisis...

  14. CASO -2016: Sindrome de Churg Strauss: a propósito de dos casos en el Hospital San Vicente de Paúl

    OpenAIRE

    Hu Liang, Huixian; Leitón Chaves, Andrés; Salas Mena, Claudio

    2016-01-01

    Las vasculitis asociadas a anticuerpos citoplasmá-ticos antineutrófilos, clasificadas como vasculitis de pequeños vasos incluyen: granulomatosis con poliangeítis (enfermedad de Wegener), poliangeítis microscópica y la granulomatosis eosinofilica con poliangeítis (GEPA) (Churg Strauss). La enferme-dad de Churg Strauss es una de las vasculitis necro-tizantes sistémicas más raras, pero potencialmente mortal. La incidencia internacional de la enferme-dad es de aproximadamente 2.5 casos por cada 1...

  15. Volcano Monitoring Using Google Earth

    Science.gov (United States)

    Bailey, J. E.; Dehn, J.; Webley, P.; Skoog, R.

    2006-12-01

    At the Alaska Volcano Observatory (AVO), Google Earth is being used as a visualization tool for operational satellite monitoring of the region's volcanoes. Through the abilities of the Keyhole Markup Language (KML) utilized by Google Earth, different datasets have been integrated into this virtual globe browser. Examples include the ability to browse thermal satellite image overlays with dynamic control, to look for signs of volcanic activity. Webcams can also be viewed interactively through the Google Earth interface to confirm current activity. Other applications include monitoring the location and status of instrumentation; near real-time plotting of earthquake hypocenters; mapping of new volcanic deposits; and animated models of ash plumes within Google Earth, created by a combination of ash dispersion modeling and 3D visualization packages. The globe also provides an ideal interface for displaying near real-time information on detected thermal anomalies or "hotspot"; pixels in satellite images with elevated brightness temperatures relative to the background temperature. The Geophysical Institute at the University of Alaska collects AVHRR (Advanced Very High Resolution Radiometer) and MODIS (Moderate Resolution Imaging Spectroradiometer) through its own receiving station. The automated processing that follows includes application of algorithms that search for hotspots close to volcano location, flagging those that meet certain criteria. Further automated routines generate folders of KML placemarkers, which are linked to Google Earth through the network link function. Downloadable KML files have been created to provide links to various data products for different volcanoes and past eruptions, and to demonstrate examples of the monitoring tools developed. These KML files will be made accessible through a new website that will become publicly available in December 2006.

  16. Modeling eruptions of Karymsky volcano

    OpenAIRE

    Ozerov, A.; Ispolatov, I.; Lees, J.

    2001-01-01

    A model is proposed to explain temporal patterns of activity in a class of periodically exploding Strombolian-type volcanos. These patterns include major events (explosions) which follow each other every 10-30 minutes and subsequent tremor with a typical period of 1 second. This two-periodic activity is thought to be caused by two distinct mechanisms of accumulation of the elastic energy in the moving magma column: compressibility of the magma in the lower conduit and viscoelastic response of...

  17. El clérigo valenciano Vicent Manuel Branchat contra Napoleón L’ecclésiastique valencien Vicent-Manuel Branchat contre Napoléon: idéologie, littérature et langue The Valencian cleric Vicent-Manuel Branchat against Napoleon: ideology, literature and language

    Directory of Open Access Journals (Sweden)

    Vicent Josep Escartí

    2011-06-01

    Full Text Available Durante la invasión de Napoleón en Valencia, y en los años inmediatamente posteriores, la literatura de carácter popularista fue claramente utilizada para movilizar a la población contra los franceses, los afrancesados y las ideas napoleónicas. Vicent Manuel Branchat, un clérigo prácticamente desconocido, fue uno de los autores que mejor ilustran esta actitud: redactó coloquios, conversaciones e incluso piezas teatrales con una clara ideología antifrancesa y conservadora, entre los años 1813 y 1819. Además, debido al carácter popular de los géneros literarios usados, la opción lingüística del catalán se impuso, ya que se trataba de llegar a las masas que no entendían bien el castellano ni el francés.Lors de l'invasion de Napoléon à Valence et dans les années immédiatement postérieures, la littérature à caractère populariste a été clairement utilisée pour mobiliser le peuple contre les Français, les francisés et les idées napoléoniennes. Vicent-Manuel Branchat, un ecclésiastique pratiquement inconnu, a été l'un des écrivains qui illustrent le mieux cette attitude: il a redigé des colloques, des conversations et même des pieces de théâtre avec une claire idéologie anti-française et conservatrice, entre les années 1813 et 1819. En outre, en raison du caractère populaire des genres littéraires utilisés, le choix de la langue catalane a été imposée puisqu'il s'agissait de toucher les masses qui ne comprenaient pas bien le castillan ou le français.During the invasion of Napoleon in Valencia and in the years which followed, the literature of popular nature was clearly used to mobilize the population against the French, the Frenchified and Napoleonic ideas. Vicent-Manuel Branchat, a practically unknown clergyman, was one of the writers who better illustrate this attitude: he wrote colloquia, conversations and even theatrical pieces with a clear anti-French and conservative ideology, between 1813 and

  18. Earthquakes - Volcanoes (Causes and Forecast)

    Science.gov (United States)

    Tsiapas, E.

    2009-04-01

    EARTHQUAKES - VOLCANOES (CAUSES AND FORECAST) ELIAS TSIAPAS RESEARCHER NEA STYRA, EVIA,GREECE TEL.0302224041057 tsiapas@hol.gr The earthquakes are caused by large quantities of liquids (e.g. H2O, H2S, SO2, ect.) moving through lithosphere and pyrosphere (MOHO discontinuity) till they meet projections (mountains negative projections or projections coming from sinking lithosphere). The liquids are moved from West Eastward carried away by the pyrosphere because of differential speed of rotation of the pyrosphere by the lithosphere. With starting point an earthquake which was noticed at an area and from statistical studies, we know when, where and what rate an earthquake may be, which earthquake is caused by the same quantity of liquids, at the next east region. The forecast of an earthquake ceases to be valid if these components meet a crack in the lithosphere (e.g. limits of lithosphere plates) or a volcano crater. In this case the liquids come out into the atmosphere by the form of gasses carrying small quantities of lava with them (volcano explosion).

  19. Active Deformation of Etna Volcano Combing IFSAR and GPS data

    Science.gov (United States)

    Lundgren, Paul

    1997-01-01

    The surface deformation of an active volcano is an important indicator of its eruptive state and its hazard potential. Mount Etna volcano in Sicily is a very active volcano with well documented eruption episodes.

  20. Campgrounds in Hawaii Volcanoes National Park

    Data.gov (United States)

    National Park Service, Department of the Interior — This dataset provides campground locations in Hawaii Volcanoes National Park. Information about facilities, water availability, permit requirements and type of...

  1. Compartmentalized Fluid Flow In The Nevado Del Ruiz Volcano Hydrothermal System(S)

    Science.gov (United States)

    Zuluaga, C. A.; Mejia, E.

    2011-12-01

    Combination of several extensive and compressive fault/fracture systems with different lithologic units compartmentalized the hydrothermal system(s) in the vicinity of the Nevado del Ruiz volcano. Three main fault/fracture systems are observed in the Ruiz volcano area, a N10°-20°E system (San Jerónimo and Palestina faults), a N40°-60°W system (Villamaría-Termales, San Ramón, Nereidas, Río Claro, San Eugenio and Campoalegrito faults), and a N60°-80°E system (Santa Rosa fault). The NW trend system act as the main path for fluid circulation, location of faults and fractures belonging to this system and their intersections with other fault systems and/or with lithologic contacts control hot springs location. The observed fault location and hot spring location pattern allow to subdivide the hydrothermal system(s) in at least five blocks. In the southernmost block, hot springs are mostly located in one of the four quadrants originated by fault intersections suggesting that there is a compartmentalization into higher and lower permeability quadrants. It is still unknown if all blocks belong to the same hydrothermal system or if there is more than one hydrothermal system.

  2. Modos de ver e de dar a ver os Painéis de São Vicente

    Directory of Open Access Journals (Sweden)

    Paula André

    2013-04-01

    Full Text Available O artigo Modos de ver e de dar a ver os Painéis de São Vicente centra-se na ideia de que o conhecimento histórico articulado com as novas tecnologias pode ser uma forma de apropriação e de afirmação da pintura e da cultura portuguesa. A análise e a perceção dos contextos que determinaram os sucessivos percursos espaciais dos Painéis dentro e fora do Museu Nacional de Arte Antiga (Lisboa e das sucessivas variações artísticas, assim como a manipulação virtual da imagem icónica dos Painéis na paisagem portuguesa, ou em realidades virtuais podem revelar a pintura de forma expressiva, pública e à escala global e contribuir para uma apreensão efetiva e afetiva dos fundamentos da cultura portuguesa. O museu como espaço identitário por excelência deve construir ferramentas que potenciem esta apreensão, inovando nos sistemas de divulgação, trabalhando em parceria com os agentes produtores de investigação na área do conhecimento histórico e na área das realidades virtuais, construindo formas instigantes de ver e ler a pintura.

  3. LA EDUCACIÓN DE EL DE ERUDITIONE FILIORUM NOBILIUM DE VICENTE DE BEAUVAIS (1190-1264

    Directory of Open Access Journals (Sweden)

    Javier Vergara Ciordia

    2012-01-01

    Full Text Available El presente artículo analiza la educación de la mujer en el De eruditione filiorum nobilium de Vicente de Beauvais (1246. Una obra latina, prácticamente inédita, que puede considerarse el primer tratado de pedagogía sistemática escrito en el mundo medieval. Su cuarta parte, dedicada al estudio de la educación de la mujer como doncella, esposa, viuda y virgen consagrada, representa, quizás, la expresión más acabada y sistemática sobre educación femenina escrita hasta entonces por un hombre de Iglesia. Para su elaboración se han tenido presentes el manuscrito latino Md, de de España (B. N. 10254 (Ii 2 (XIV, f. 65-118v.., y el manuscrito latino P, de de Francia (Biblioteca Nacional de París, B. N. Lat. 16390. Su estudio, traducción y cotejo nos ha permitido ofrecer una de las síntesis más representativas y tempranas de la cultura escolástica sobre educación de la mujer.

  4. La prensa y la crítica ante el teatro lírico de Vicente Peydró

    Directory of Open Access Journals (Sweden)

    José Salvador Blasco Magraner

    2013-01-01

    Full Text Available Vicente Peydró Díez fue el creador y principal mantenedor del teatro lírico valenciano inmerso en el movimiento cultural que denominamos Renaixença. Las zarzuelas de Peydró atrajeron a los principales medios de prensa valencianos, donde escribían algunos de los más importantes críticos del momento. En el presente artículo se analizan las críticas de sus obras más significativas a fin de abordar los juicios estético-críticos emitidos por los musicógrafos y sus análisis para comprender mejor la postura de éstos ante el teatro lírico de Peydró. Asimismo, también se analiza la repercusión social de este autor, quien gozó de un agran aceptación por la facilidad que tenía para conectar con el público.

  5. Associated Injuries in Patients with Maxillofacial Trauma at the Hospital São Vicente de Paulo, Passo Fundo, Brazil

    Directory of Open Access Journals (Sweden)

    João Matheus Scherbaum Eidt

    2013-10-01

    Full Text Available Objectives: This study aimed to identify the occurrence, type and severity of body injuries associated in patients with facial trauma, referred to the Hospital São Vicente de Paulo (HSVP in the city of Passo Fundo - RS, Brazil.Material and Methods: The study analyzed medical records of 1385 patients who were treated in the Department of Oral and Maxillofacial Surgery at HSVP during the period from 1991 to 2010.Results: According to the results of this study we observed that 35% of cases of facial fractures were associated with a body injury. It was recorded a higher incidence of facial fractures in the male population (82.6%, aged between 20 and 39 years. The main etiologic factors for this association were car accidents, falls and assaults. Most fractures were recorded in the mandible and the main body injury found was the abrasion associated in some region of the body, however, when considering fractures of the face middle third the main body injury was more associated with cranioencephalic trauma.Conclusions: Concomitant injuries in areas other than the face should be expected first and foremost after high-speed trauma mechanisms and in association with severe facial fractures. The results underscore the importance of multiprofessional collaboration in diagnosis and sequencing of treatment who have sustained facial fractures.

  6. Research on Methods for Building Volcano Disaster Information System--taking Changbai Mountain as an example

    Institute of Scientific and Technical Information of China (English)

    ZHANG Xuexia; BO Liqun; LU Xingchang

    2001-01-01

    Volcano eruption is one of the most serious geological disasters in the world. There are volcanoes in every territory on the earth, about a thousand in China, among which Changbai Mountain Volcano, Wudalianchi Volcano and Tengchong Volcano are the most latent catastrophic eruptive active volcanoes. The paper, following an instance of Changbai Mountain Volcano, expounds that monitoring, forecasting and estimating volcano disaster by building Volcano Disaster Information System (VDIS) is feasible to alleviate volcano disaster.

  7. Study of Seismic Activity at Ceboruco Volcano, Mexico

    Science.gov (United States)

    Nunez-Cornu, F. J.; Escudero, C. R.; Rodríguez Ayala, N. A.; Suarez-Plascencia, C.

    2013-12-01

    Many societies and their economies endure the disastrous consequences of destructive volcanic eruptions. The Ceboruco stratovolcano (2,280 m.a.s.l.) is located in Nayarit, Mexico, at the west of the Mexican volcanic belt and towards the Sierra de San Pedro southeast, which is a key communication point for coast of Jalisco and Nayarit and the northwest of Mexico. It last eruptive activity was in 1875, and during the following five years it presents superficial activity such as vapor emissions, ash falls and riodacitic composition lava flows along the southeast side. Although surface activity has been restricted to fumaroles near the summit, Ceboruco exhibits regular seismic unrest characterized by both low frequency seismic events and volcano-tectonic earthquakes. From March 2003 until July 2008 a three-component short-period seismograph Marslite station with a Lennartz 3D (1Hz) was deployed in the south flank (CEBN) and within 2 km from the summit to monitoring the seismic activity at the volcano. The LF seismicity recorded was classified using waveform characteristics and digital analysis. We obtained four groups: impulsive arrivals, extended coda, bobbin form, and wave package amplitude modulation earthquakes. The extended coda is the group with more earthquakes and present durations of 50 seconds. Using the moving particle technique, we read the P and S wave arrival times and estimate azimuth arrivals. A P-wave velocity of 3.0 km/s was used to locate the earthquakes, most of the hypocenters are below the volcanic edifice within a circular perimeter of 5 km of radius and its depths are calculated relative to the CEBN elevation as follows. The impulsive arrivals earthquakes present hypocenters between 0 and 1 km while the other groups between 0 and 4 km. Results suggest fluid activity inside the volcanic building that could be related to fumes on the volcano. We conclude that the Ceboruco volcano is active. Therefore, it should be continuously monitored due to the

  8. “Y SAN LUIS OBEDIENTE RESPONDÍA” LOS TERRATENIENTES DE LA CIUDAD DE SAN LUIS Y EL PLAN SANMARTINIANO (1814 - 1829

    Directory of Open Access Journals (Sweden)

    Melody Celeste Vera

    2015-12-01

    Full Text Available La base fundamental de la identidad de los habitantes de la provincia de San Luis (Argentina y de su historiografía, es el axioma que el pueblo puntano se inmoló por el proyecto sanmartiniano. El Gobernador Intendente Vicente Dupuy (1814-1820 fue el principal colaborador de José de San Martin en la provincia, y el coordinador de las donaciones de bienes y vidas para la causa. Contaba con el apoyo del “cabildo sanmartiniano”, un grupo de vecinos que secundaban sus ideales, apoyaban sus iniciativas y colaboraban materialmente. Pero luego de la caída del gobierno central en 1820 no se ofrece una interpretación sobre el cambio de proyecto político que representó el nuevo Gobernador, José Santos Ortiz (1820-1829. Si se consideran conjuntamente las oposiciones de un grupo de vecinos levantadas durante el gobierno de Dupuy y el accionar de Santos Ortiz durante su mandato, cabe preguntarse: ¿los cabildantes terratenientes apoyaron la gesta sanmartiniana por convicción, o se vieron forzados a hacerlo por la imposición de un grupo en el poder? ¿Representó Santos Ortiz el proyecto de lo que el grupo terrateniente buscaba y no pudo obtener mientras se llevaba delante el plan sanmartiniano? En este trabajo se busca comparar los objetivos primarios de ambos gobernadores durante sus mandatos, con el fin de vislumbrar cuál de los planes de gobierno representaba los ideales y necesidades de los grandes terratenientes de la ciudad de San Luis.

  9. San Pascual (1989) n. 272

    OpenAIRE

    Pérez, María Dolores, O.S.C. (Directora)

    1989-01-01

    Editorial. Entrevista madre abadesa. Ofrenda. San Pascual tercer centenario de la canonizacion y cuarto de su muerte. San Pascual, un Santo universal. Pascual Baylón, poeta. grupo Scout Sant Pasqual. Aportaciones, donativos, limosnas, benefactores. Boletin informativo del templo de San Pascual de villareal.

  10. Predictability of Volcano Eruption: lessons from a basaltic effusive volcano

    CERN Document Server

    Grasso, J R

    2003-01-01

    Volcano eruption forecast remains a challenging and controversial problem despite the fact that data from volcano monitoring significantly increased in quantity and quality during the last decades.This study uses pattern recognition techniques to quantify the predictability of the 15 Piton de la Fournaise (PdlF) eruptions in the 1988-2001 period using increase of the daily seismicity rate as a precursor. Lead time of this prediction is a few days to weeks. Using the daily seismicity rate, we formulate a simple prediction rule, use it for retrospective prediction of the 15 eruptions,and test the prediction quality with error diagrams. The best prediction performance corresponds to averaging the daily seismicity rate over 5 days and issuing a prediction alarm for 5 days. 65% of the eruptions are predicted for an alarm duration less than 20% of the time considered. Even though this result is concomitant of a large number of false alarms, it is obtained with a crude counting of daily events that are available fro...

  11. Newberry Volcano's youngest lava flows

    Science.gov (United States)

    Robinson, Joel E.; Donnelly-Nolan, Julie M.; Jensen, Robert A.

    2015-01-01

    Most of Newberry Volcano's youngest lava flows are found within the Newberry National Volcanic Monument in central Oregon. Established November 5, 1990, the monument is managed by the U.S. Forest Service as part of the Deschutes National Forest. Since 2011, a series of aerial surveys over the monument collected elevation data using lidar (light detection and ranging) technology, which uses lasers to directly measure the ground surface. These data record previously unseen detail in the volcano’s numerous lava flows and vents. On average, a laser return was collected from the ground’s surface every 2.17 feet (ft) with ±1.3 inches vertical precision.

  12. Contiuous gas monitoring at the volcano Galeras, Colombia

    Science.gov (United States)

    Faber, E.; Morán, C.; Poggenburg, J.; Garzón, G.; Teschner, M.; Weinlich, F. H.

    2003-04-01

    (1) Federal Institute for Geosciences and Natural Resources, Hannover, Germany (e.faber@bgr.de), (2) Instituto de Investigación en Geocientifica, Mineroambiental y Nuclear - INGEOMINAS, San Juan de Pasto, Colombia (3) Instituto de Investigación en Geocientifica, Mineroambiental y Nuclear - INGEOMINAS, Manizales, Colombia A gas monitoring system has been installed on the volcano Galeras in Colombia as part of a multi-parameter station. Gases are extracted from the fumarolic vapour through a short pipe. After the water has been condensed the gas passes over sensors for carbon dioxide, sulphur dioxide and radon. Other parameters measured are temperature of the fumarolic vapour, fumarolic pressure, temperature of the ambient air and the ambient atmospheric pressure. The signals of the sensors are digitised in the electronics. The digital data are transmitted every 6 seconds by a telemetry system to the observatory down in the city of Pasto via a repeater station at the rim of the Galeras. The system at the volcano is powered by batteries connected to solar panels. Data are stored in the observatory, they are plotted and compared with all the other information of the multi-parameter station. Although the various compounds of the gas system are well preserved for the very aggressive environment close to the fumarole some problems still remain: Sulphur often plugs the pipe to the sensors and requires maintenance more often than desired. As the volcano is most of the time in clouds the installed solar power system (about 400 Watts maximum power) does not enable to run the system at the fumarole (consumption about 15 Watts) continuously during all nights. Despite these still existing problems some results have been obtained encouraging us to continue the operation of the system, to further develop the technical quality and to increase the number of fumaroles included into a growing monitoring network. In March 2000 seismic activity in the crater increased accompanied by a

  13. Política e comércio: a atuação de Antônio Vicente da Fontoura ao longo da Revolução Farroupilha (1835 -1845 = Politics and commerce: the role of Antônio Vicente da Fontoura along the Farroupilha Revolution” (1835-1845

    Directory of Open Access Journals (Sweden)

    Campos, Cristiano Soares

    2014-01-01

    Full Text Available Este trabalho se propôs averiguar a atuação de Antonio Vicente da Fontoura, durante a Revolução Farroupilha (1835 – 1845, os postos assumidos por este comerciante ao longo do conflito, e seu retorno a politica local de Cachoeira após a Revolta. A pesquisa vem sendo desenvolvida com base em bibliografias envolvendo a temática, jornais de época e documentos (correspondências que nos ajudem a “rastrear” as ações do personagem. Veremos neste artigo como Vicente da Fontoura, comerciante da região de Cachoeira, inseriu-se à Revolução Farroupilha seja ela por sua posição econômico-social, pelo interesse dos Farroupilhas, ou por possuir interesses pessoais na participação do conflito. Atualmente como Mestrando do Programa de Pós-Graduação em História da Universidade Federal de Santa Maria (PPGH-UFSM, Bolsista FAPERGS/CAPES, continuo pesquisando Antonio Vicente da Fontoura juntamente com Domingos José de Almeida, averiguando a atuação comercial destes na Fronteira Platina entre 1830 a 1850. Meu orientador é o Professor Doutor José Iran Ribeiro

  14. Growth of the hermit crab Clibanarius vittatus (Bosc, 1802 (Crustacea, Anomura, Diogenidae at São Vicente, São Paulo, Brazil

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    Bruno Sampaio Sant’Anna

    2008-06-01

    Full Text Available The present study analyzed the growth of males and females of the hermit crab Clibanarius vittatus (Bosc, 1802, at São Vicente, São Paulo, Brazil. Monthly collections were made from May/2001 through April/2003, at the Pescadores Beach in São Vicente. The 2,501 crabs caught were identified and sexed and the carapace shield length (CSL was measured. For the seasonal growth study, the population was divided into 5mm size classes (CSL and analyzed by the Bertalanffy method, with the aid of the program Fisat II. The mean sizes of the 703 males and 1,798 females were 8.94±1.80 and 6.61±1.13 mm, respectively. A seasonal growth pattern was observed, with males reaching an asymptotic size (14.92 mm larger than that of females (13.85 mm. Males began the growth process approximately five months before the females. This growth pattern probably helped to reduce intraspecific competition for the shells, because the males reached larger size and made the smaller shells available to the females.O presente estudo teve como objetivo analisar o crescimento de machos e fêmeas do ermitão Clibanarius vittatus (Bosc, 1802, da região de São Vicente, São Paulo, Brasil. Foram realizadas coletas mensais de maio/2001 a abril/2003, na Praia dos Pescadores em São Vicente. Os 2.501 animais capturados foram identificados, determinados quanto ao sexo e mensurados quanto ao seu comprimento de escudo cefalotorácico (CEC. Para o estudo sazonal do crescimento, a população foi dividida em classes de tamanho de 5mm de (CEC, e analisada pelo método de Bertalanffy, com o auxílio do software Fisat II. Foram obtidos 703 indivíduos machos e 1.798 fêmeas, com média de tamanho de 8.94±1.80 e 6.61±1.13mm, respectivamente. Constatou-se um padrão de crescimento sazonal, com machos atingindo um tamanho assintótico (14.92mm superior ao das fêmeas (13.85mm, além de iniciarem o processo de crescimento aproximadamente cinco meses antes destas. Desta forma, é provável que

  15. Evidence of contamination by oil and oil products in the Santos-São Vicente estuary, São Paulo, Brazil

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    Juliana Souza Azevedo

    2012-06-01

    Full Text Available Different components of the mixed function oxidase (MFO system and the levels of fluorescent aromatic compounds in bile (FACs were measured in Cathorops spixii in order to assess the impact of polycyclic aromatic hydrocarbons (PAHs. Fish were sampled in an estuary (Santos/São Vicente with a history of contamination by PAHs, mainly due to the presence of the industrial complex of Cubatão city and of another of low anthropogenic influence (Cananéia on the Brazilian coast. FACs were higher in fish from the polluted site, and the PAH 5 and 6-ring metabolites were the most frequent - with 14% and 15%, respectively. Levels of the different components of the MFO system showed the same variation profile as the FACs for both estuaries. Therefore, the values found for somatic indexes and biomarkers with data of bile PAH metabolites indicate the presence of organic contaminants, especially in the area subject to the influence of the industrial complex on the Santos/São Vicente estuary.Diferentes componentes do sistema oxidase de função mista (MFO e os níveis de compostos aromáticos fluorescentes em bile (FACS foram determinados em Cathorops spixii a fim de avaliar o impacto de hidrocarbonetos policíclicos aromáticos (PAHs. Os peixes foram coletados em um estuário com histórico de contaminação por PAHs (Santos/São Vicente, devido principalmente a presença do complexo industrial na cidade de Cubatão e em outro com baixa influência antropogênica (Cananéia na costa brasileira. FACs foram maiores nos peixes oriundos da área contaminada, sendo os metabolitos de HPAs com 5 e 6 anéis, os mais representativos com 14% e 15%, respectivamente. Os níveis dos diferentes componentes do sistema MFO mostraram o mesmo perfil de variação que os FACs em ambos os estuários. Portanto, os valores encontrados para os índices somáticos e os biomarcadores considerados, em associação com os dados de metabólitos biliares de PAHs, indicam a presença de

  16. Vicente Seabra Telles e a criação da nomenclatura em português para a Química 'Nova' de Lavoisier

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    Fernando J. Luna

    2013-01-01

    Full Text Available In 1787, Lavoisier and coworkers published a 314-page book entitled Méthode de nomenclature chimique in which a novel system for the naming of compounds and elements was presented. The Brazilian chemist Vicente Coelho de Seabra Telles (1764-1804 was responsible for translating it into Portuguese. Telles proposed the adoption not only of the Latin etymology, but decided to use Latin suffixes as well, because of the similarity between Latin and the Portuguese language. In doing so, he made the names of the compounds in Portuguese bear a closer resemblance to the names in Latin than to those in French or Spanish.

  17. El sindicalismo mexicano durante el gobierno de Vicente Fox (2000-2006): la democratización y sus efectos en el sistema corporativo

    OpenAIRE

    Martínez, Roberto  Zepeda; Lara, Dainzú  López de

    2014-01-01

    Este artículo examina las transformaciones en la relación Estado-sindicatos durante la administración de Vicente Fox (2000-2006), el primer presidente de la era democrática en México. El análisis se hace desde una perspectiva dual, considerando la democratización y sus efectos en el corporativismo. Por una parte, se consideran los efectos de la democratización política en las relaciones entre el Estado y las organizaciones sindicales. Por otra parte, se escudriña la reformulación de la estruc...

  18. La música de Vicent Olmos i Claver i el seu magisteri a les capelles musicals valencianes del segle XVIII

    OpenAIRE

    Marzal Raga, Ángel

    2014-01-01

    “La música de Vicent Olmos i Claver i el seu magisteri a les capelles musicals valencianes del segle XVIII” és una tesi doctoral que intenta recuperar per a la nostra cultura una producció musical oblidada. Aquesta investigació ha sigut estructurada en dos volums subdividits, respectivament, en dues parts. No obstant l’estructura del treball, hem d’aclarir que la tesi s’inicia amb un apartat epistemològic que conté tot allò relacionat amb les fonts documentals, dins del qual trobarem la metod...

  19. Apendicectomías no enfermas en el Hospital Vicente Corral Moscoso y Hospital José Carrasco Arteaga, Cuenca 2014

    OpenAIRE

    Montero Tapia, Edgar Paul

    2016-01-01

    Objetivo General Determinar la prevalencia de Apendicectomías No Enfermas en pacientes mayores de 15 años en el servicio de cirugía del Hospital Vicente Corral Moscoso y Hospital José Carrasco Arteaga durante el 2014. Método: Se realizó un estudio transversal, en 300 pacientes sometidos a apendicectomía de los HVCM y HJCA en la Ciudad de Cuenca; se recogieron datos demográficos, cuadro clínico, resultados de exámenes complementarios de sangre y resultados de la escala de Alvarado y RIP...

  20. CUERPO Y ESPACIO, ESTUDIO DE LA ESCENA POETICA DEL TEXTO ALTAZOR DE VICENTE HUIDOBRO Y DEL MONTAJE UN VIAJE EN PARASUBIDAS

    OpenAIRE

    2010-01-01

    Introducción Este trabajo propone el estudio paralelo de un texto poético y una puesta en escena desde un objeto común: el cuerpo de un sujeto en escena. Desde este referente, nos instalamos el análisis de los diversos procesos de significación que se dan en ambos objetos artísticos. Se ha escogido el texto Altazor de Vicente Huidobro, ya que es un poema estructurado en base a un soporte narrativo donde se reconoce un personaje emplazado en un esp...

  1. El sindicalismo mexicano durante el gobierno de Vicente Fox (2000-2006): la democratización y sus efectos en el sistema corporativo

    OpenAIRE

    Martínez, Roberto  Zepeda; Lara, Dainzú  López de

    2014-01-01

    Este artículo examina las transformaciones en la relación Estado-sindicatos durante la administración de Vicente Fox (2000-2006), el primer presidente de la era democrática en México. El análisis se hace desde una perspectiva dual, considerando la democratización y sus efectos en el corporativismo. Por una parte, se consideran los efectos de la democratización política en las relaciones entre el Estado y las organizaciones sindicales. Por otra parte, se escudriña la reformulación de la estruc...

  2. Instrumentation Recommendations for Volcano Monitoring at U.S. Volcanoes Under the National Volcano Early Warning System

    Science.gov (United States)

    Moran, Seth C.; Freymueller, Jeff T.; LaHusen, Richard G.; McGee, Kenneth A.; Poland, Michael P.; Power, John A.; Schmidt, David A.; Schneider, David J.; Stephens, George; Werner, Cynthia A.; White, Randall A.

    2008-01-01

    As magma moves toward the surface, it interacts with anything in its path: hydrothermal systems, cooling magma bodies from previous eruptions, and (or) the surrounding 'country rock'. Magma also undergoes significant changes in its physical properties as pressure and temperature conditions change along its path. These interactions and changes lead to a range of geophysical and geochemical phenomena. The goal of volcano monitoring is to detect and correctly interpret such phenomena in order to provide early and accurate warnings of impending eruptions. Given the well-documented hazards posed by volcanoes to both ground-based populations (for example, Blong, 1984; Scott, 1989) and aviation (for example, Neal and others, 1997; Miller and Casadevall, 2000), volcano monitoring is critical for public safety and hazard mitigation. Only with adequate monitoring systems in place can volcano observatories provide accurate and timely forecasts and alerts of possible eruptive activity. At most U.S. volcanoes, observatories traditionally have employed a two-component approach to volcano monitoring: (1) install instrumentation sufficient to detect unrest at volcanic systems likely to erupt in the not-too-distant future; and (2) once unrest is detected, install any instrumentation needed for eruption prediction and monitoring. This reactive approach is problematic, however, for two reasons. 1. At many volcanoes, rapid installation of new ground-1. based instruments is difficult or impossible. Factors that complicate rapid response include (a) eruptions that are preceded by short (hours to days) precursory sequences of geophysical and (or) geochemical activity, as occurred at Mount Redoubt (Alaska) in 1989 (24 hours), Anatahan (Mariana Islands) in 2003 (6 hours), and Mount St. Helens (Washington) in 1980 and 2004 (7 and 8 days, respectively); (b) inclement weather conditions, which may prohibit installation of new equipment for days, weeks, or even months, particularly at

  3. Volcanoes

    Science.gov (United States)

    ... Part 3 of 3) Hot Weather Tips Heat Stress in Older Adults FAQs Extreme Heat PSAs Related Links MMWR Bibliography CDC's Program Floods Flood Readiness Personal Hygiene After a Disaster Cleanup of Flood Water After a Flood Worker Safety Educational Materials Floods ...

  4. Redoubt Volcano: 2009 Eruption Overview

    Science.gov (United States)

    Bull, K. F.

    2009-12-01

    Redoubt Volcano is a 3110-m glaciated stratovolcano located 170 km SW of Anchorage, Alaska, on the W side of Cook Inlet. The edifice comprises a oil production in Cook Inlet was halted for nearly five months. Unrest began in August, 2008 with reports of H2S odor. In late September, the Alaska Volcano Observatory (AVO)’s seismic network recorded periods of volcanic tremor. Throughout the fall, AVO noted increased fumarolic emissions and accompanying ice- and snow-melt on and around the 1990 dome, and gas measurements showed elevated H2S and CO2 emissions. On January 23, seismometers recorded 48 hrs of intermittent tremor and discrete, low-frequency to hybrid events. Over the next 6 weeks, seismicity waxed and waned, an estimated 5-6 million m3 of ice were lost due to melting, volcanic gas emissions increased, and debris flows emerged repeatedly from recently formed ice holes near the 1990 dome, located on the crater’s N (“Drift”) side. On March 15, a phreatic explosion deposited non-juvenile ash from a new vent in the summit ice cap just S of the 1990 dome. Ash from the explosion rose to ~4500 m above sea level (asl). The plume was accompanied by weak seismicity. The first magmatic explosion occurred on March 22. Over the next two weeks, more than 19 explosions destroyed at least two lava domes and produced ash plumes that reached 6-18 km asl. Tephra was deposited along variable azimuths including trace to minor amounts on Anchorage and Kenai Peninsula communities, and reached Fairbanks, ~800 km to the N. Several lahars were produced by explosive disruption and melting of the “Drift” glacier. The largest lahars followed explosions on March 23 and April 4 and inundated the Drift River valley to the coast, causing temporary evacuation of the Drift River Oil Terminal, ~40 km from the vent. Time-lapse images captured pyroclastic flows and lahars in the “Drift” glacier valley during several of the explosions. Ballistics and pyroclastic flow deposits were

  5. Linking space observations to volcano observatories in Latin America: Results from the CEOS DRM Volcano Pilot

    Science.gov (United States)

    Delgado, F.; Pritchard, M. E.; Biggs, J.; Arnold, D. W. D.; Poland, M. P.; Ebmeier, S. K.; Wauthier, C.; Wnuk, K.; Parker, A. L.; Amelug, F.; Sansosti, E.; Mothes, P. A.; Macedo, O.; Lara, L.; Zoffoli, S.; Aguilar, V.

    2015-12-01

    Within Latin American, about 315 volcanoes that have been active in the Holocene, but according to the United Nations Global Assessment of Risk 2015 report (GAR15) 202 of these volcanoes have no seismic, deformation or gas monitoring. Following the 2012 Santorini Report on satellite Earth Observation and Geohazards, the Committee on Earth Observation Satellites (CEOS) has developed a 3-year pilot project to demonstrate how satellite observations can be used to monitor large numbers of volcanoes cost-effectively, particularly in areas with scarce instrumentation and/or difficult access. The pilot aims to improve disaster risk management (DRM) by working directly with the volcano observatories that are governmentally responsible for volcano monitoring, and the project is possible thanks to data provided at no cost by international space agencies (ESA, CSA, ASI, DLR, JAXA, NASA, CNES). Here we highlight several examples of how satellite observations have been used by volcano observatories during the last 18 months to monitor volcanoes and respond to crises -- for example the 2013-2014 unrest episode at Cerro Negro/Chiles (Ecuador-Colombia border); the 2015 eruptions of Villarrica and Calbuco volcanoes, Chile; the 2013-present unrest and eruptions at Sabancaya and Ubinas volcanoes, Peru; the 2015 unrest at Guallatiri volcano, Chile; and the 2012-present rapid uplift at Cordon Caulle, Chile. Our primary tool is measurements of ground deformation made by Interferometric Synthetic Aperture Radar (InSAR) but thermal and outgassing data have been used in a few cases. InSAR data have helped to determine the alert level at these volcanoes, served as an independent check on ground sensors, guided the deployment of ground instruments, and aided situational awareness. We will describe several lessons learned about the type of data products and information that are most needed by the volcano observatories in different countries.

  6. 75 FR 55975 - Safety Zone; San Diego Harbor Shark Fest Swim; San Diego Bay, San Diego, CA

    Science.gov (United States)

    2010-09-15

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Harbor Shark Fest Swim; San Diego Bay, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a temporary safety zone upon the navigable waters of the San Diego Bay, San Diego, CA, in support...

  7. Literatura y filmicidad: El vocabulario de los balcones (Almudena Grandes, 1998 en Aunque tú no lo sepas (Juan Vicente Córdoba, 2000

    Directory of Open Access Journals (Sweden)

    Bonilla Cerezo, Rafael

    2004-06-01

    Full Text Available In the tales and narrative collections of the Spanish writers, different arts and genres can be encountered. This article focuses upon the study of one dialogue between El vocabulario de los balcones, published by Almudena Grandes in 1998, and Aunque tú no lo sepas (2000, the debut of Juan Vicente Córdoba as director. Because the Grandes' tale has a very filmic language: flashbacks, cuts, flashforwards and almost the steady cam. Here, I study the development and influences in this opera prima where Córdoba shows the effects of his light over the words.En los cuentos y colecciones narrativas de nuestro país prolifera el diálogo entre los diversos géneros, escuelas y medios expresivos. Este artículo pone de manifiesto la causalidad y el proceso de reescritura —o adaptación— fílmica de un relato breve de Almudena Grandes, El vocabulario de los balcones (1998, en una película de Juan Vicente Córdoba: Aunque tú no lo sepas (2000. Porque la historia de la autora madrileña posee, en el fondo, un lenguaje puramente fílmico: flashbacks, cuts, flashforwards e incluso un moderado uso de la steady cam. Estudio, pues, su desarrollo e influencias en esta opera prima donde Córdoba expone el efecto de su luz sobre las palabras.

  8. Antifascismo: un espacio de encuentro entre el exilio y la política nacional. El caso de Vicente Lombardo Toledano en México (1936-1945

    Directory of Open Access Journals (Sweden)

    Acle-Kreysing, Andrea

    2016-08-01

    Full Text Available This article puts forward an original interpretation of antifascism, understood as a transatlantic political culture, focusing upon the case of the union leader Vicente Lombardo Toledano. Between the Spanish Civil War and the Second World War, antifascism in Mexico acquired several meanings, centred on the reinvention of the Mexican Revolution’s legacy, while benefiting from the collaboration between European antifascist exiles and local left-wing circles. Making use of novel sources, this article vindicates the key role that Mexico was then able to enjoy internationally due to its ideological commitments.Este artículo propone una lectura original del antifascismo, entendido como una cultura política trasatlántica, a partir del caso del líder sindicalista Vicente Lombardo Toledano. Se discute la evolución del significado del antifascismo en México, centrado en la recreación del legado de la Revolución Mexicana, en el período comprendido entre la Guerra Civil española y la Segunda Guerra Mundial, enfatizando la colaboración entre el exilio antifascista europeo y los círculos izquierdistas locales. A partir de varios documentos inéditos, se reivindica el protagonismo que México ejerció entonces en virtud de su compromiso ideológico.

  9. Conquista, sexo y esclavitud en la cuenca del Río de la Plata: Asunción y São Vicente a mediados del siglo XVI

    Directory of Open Access Journals (Sweden)

    Elisa Frühauf Garcia

    2015-08-01

    Full Text Available A mediados del siglo XVI, portugueses y españoles, establecidos en São Vicente y Asunción, ya habían entablado relaciones cercanas con los tupí-guaraní que habitaban el sur de América. Sobre esas relaciones se asentaba una de las principales actividades económicas de la época: el tráfico de esclavos, que abastecía tanto las incipientes demandas americanas como los mercados europeos. En este artículo se analizarán los elementos que articulaban los intercambios entre ibéricos y la población nativa, enfatizando el papel de las mujeres indígenas.   In the mid-1500’s, the Portuguese and the Spanish, settled in São Vicente and Asunción, had already established close relations with the Tupi-Guarani who inhabited the Southern region of America. Such relations were based on one of the then most importante economic activities: the slave trade, which provided both the incipient colonial American demands as well as the European markets. This article intends to analyze the elements that articulated the trade between the Iberians and the native peoples, emphasizing the role played by indigenous women.

  10. Environmental parameters and antimicrobial susceptibility of enterobacteriaceae isolated from estuarine waters of São Vicente, São Paulo state, Brazil

    Directory of Open Access Journals (Sweden)

    N. G. G. S. Lourenço

    2007-01-01

    Full Text Available Diseases transmitted by water consists a serious public health problem and enterobacteria are the main group of microorganisms responsible for outbreaks in humans. Such pathogenic bacteria proliferate in water polluted by domestic and industrial sewage and reach the population through seawater contact. The aim of the present work was to study environmental parameters as well as to identify Enterobacteriaceae species and their antimicrobial susceptibility in water samples collected from the estuarine area of São Vicente city (São Paulo State, Brazil. Strains were identified by using traditional biochemical tests described in literature and antimicrobial susceptibility tests were carried out using the disk diffusion method. Out of 26 samples, Escherichia coli was the most frequent species (40.1%, followed by Citrobacter, Enterobacter and Klebsiella. The most effective drugs against the tested microorganisms were gentamycin, netilmicin, ciprofloxacin and cefepime. Since these bacteria are commonly found in seashore contaminated by sewage effluents, it can be concluded that estuarine waters of São Vicente are polluted and potentially capable of causing diseases and spreading pathogenic bacteria to human communities.

  11. Volcano Monitoring Using Google Earth

    Science.gov (United States)

    Cameron, W.; Dehn, J.; Bailey, J. E.; Webley, P.

    2009-12-01

    At the Alaska Volcano Observatory (AVO), remote sensing is an important component of its daily monitoring of volcanoes. AVO’s remote sensing group (AVORS) primarily utilizes three satellite datasets; Advanced Very High Resolution Radiometer (AVHRR) data, from the National Oceanic and Atmospheric Administration’s (NOAA) Polar Orbiting Satellites (POES), Moderate Resolution Imaging Spectroradiometer (MODIS) data from the National Aeronautics and Space Administration’s (NASA) Terra and Aqua satellites, and NOAA’s Geostationary Operational Environmental Satellites (GOES) data. AVHRR and MODIS data are collected by receiving stations operated by the Geographic Information Network of Alaska (GINA) at the University of Alaska’s Geophysical Institute. An additional AVHRR data feed is supplied by NOAA’s Gilmore Creek satellite tracking station. GOES data are provided by the Naval Research Laboratory (NRL), Monterey Bay. The ability to visualize these images and their derived products is critical for the timely analysis of the data. To this end, AVORS has developed javascript web interfaces that allow the user to view images and metadata. These work well for internal analysts to quickly access a given dataset, but they do not provide an integrated view of all the data. To do this AVORS has integrated its datasets with Keyhole Markup Language (KML) allowing them to be viewed by a number of virtual globes or other geobrowsers that support this code. Examples of AVORS’ use of KML include the ability to browse thermal satellite image overlays to look for signs of volcanic activity. Webcams can also be viewed interactively through KML to confirm current activity. Other applications include monitoring the location and status of instrumentation; near real-time plotting of earthquake hypocenters; mapping of new volcanic deposits using polygons; and animated models of ash plumes, created by a combination of ash dispersion modeling and 3D visualization packages.

  12. Structure and mechanics of the San Andreas-San Gregorio fault junction, San Francisco, California

    Science.gov (United States)

    Parsons, Tom; Bruns, Terry R.; Sliter, Ray

    2005-01-01

    The right-lateral San Gregorio and San Andreas faults meet west of the Golden Gate near San Francisco. Coincident seismic reflection and refraction profiling across the San Gregorio and San Andreas faults south of their junction shows the crust between them to have formed shallow extensional basins that are dissected by parallel strike-slip faults. We employ a regional finite element model to investigate the long-term consequences of the fault geometry. Over the course of 2-3 m.y. of slip on the San Andreas-San Gregorio fault system, elongated extensional basins are predicted to form between the two faults. An additional consequence of the fault geometry is that the San Andreas fault is expected to have migrated eastward relative to the San Gregorio fault. We thus propose a model of eastward stepping right-lateral fault formation to explain the observed multiple fault strands and depositional basins. The current manifestation of this process might be the observed transfer of slip from the San Andreas fault east to the Golden Gate fault.

  13. Lahar hazards at Agua volcano, Guatemala

    Science.gov (United States)

    Schilling, S.P.; Vallance, J.W.; Matías, O.; Howell, M.M.

    2001-01-01

    At 3760 m, Agua volcano towers more than 3500 m above the Pacific coastal plain to the south and 2000 m above the Guatemalan highlands to the north. The volcano is within 5 to 10 kilometers (km) of Antigua, Guatemala and several other large towns situated on its northern apron. These towns have a combined population of nearly 100,000. It is within about 20 km of Escuintla (population, ca. 100,000) to the south. Though the volcano has not been active in historical time, or about the last 500 years, it has the potential to produce debris flows (watery flows of mud, rock, and debris—also known as lahars when they occur on a volcano) that could inundate these nearby populated areas.

  14. Volcanoes muon imaging using Cherenkov telescopes

    CERN Document Server

    Catalano, Osvaldo; Mineo, Teresa; Cusumano, Giancarlo; Maccarone, Maria Concetta; Pareschi, Giovanni

    2015-01-01

    A detailed understanding of a volcano inner structure is one of the key-points for the volcanic hazards evaluation. To this aim, in the last decade, geophysical radiography techniques using cosmic muon particles have been proposed. By measuring the differential attenuation of the muon flux as a function of the amount of rock crossed along different directions, it is possible to determine the density distribution of the interior of a volcano. Up to now, a number of experiments have been based on the detection of the muon tracks crossing hodoscopes, made up of scintillators or nuclear emulsion planes. Using telescopes based on the atmospheric Cherenkov imaging technique, we propose a new approach to study the interior of volcanoes detecting the Cherenkov light produced by relativistic cosmic-ray muons that survive after crossing the volcano. The Cherenkov light produced along the muon path is imaged as a typical annular pattern containing all the essential information to reconstruct particle direction and energ...

  15. Radial anisotropy ambient noise tomography of volcanoes

    Science.gov (United States)

    Mordret, Aurélien; Rivet, Diane; Shapiro, Nikolai; Jaxybulatov, Kairly; Landès, Matthieu; Koulakov, Ivan; Sens-Schönfelder, Christoph

    2016-04-01

    The use of ambient seismic noise allows us to perform surface-wave tomography of targets which could hardly be imaged by other means. The frequencies involved (~ 0.5 - 20 s), somewhere in between active seismic and regular teleseismic frequency band, make possible the high resolution imaging of intermediate-size targets like volcanic edifices. Moreover, the joint inversion of Rayleigh and Love waves dispersion curves extracted from noise correlations allows us to invert for crustal radial anisotropy. We present here the two first studies of radial anisotropy on volcanoes by showing results from Lake Toba Caldera, a super-volcano in Indonesia, and from Piton de la Fournaise volcano, a hot-spot effusive volcano on the Réunion Island (Indian Ocean). We will see how radial anisotropy can be used to infer the main fabric within a magmatic system and, consequently, its dominant type of intrusion.

  16. A field guide to Newberry Volcano, Oregon

    Science.gov (United States)

    Jenson, Robert A.; Donnelly-Nolan, Julie M.; McKay, Daniele

    2009-01-01

    Newberry Volcano is located in central Oregon at the intersection of the Cascade Range and the High Lava Plains. Its lavas range in age from ca. 0.5 Ma to late Holocene. Erupted products range in composition from basalt through rhyolite and cover ~3000 km2. The most recent caldera-forming eruption occurred ~80,000 years ago. This trip will highlight a revised understanding of the volcano's history based on new detailed geologic work. Stops will also focus on evidence for ice and flooding on the volcano, as well as new studies of Holocene mafic eruptions. Newberry is one of the most accessible U.S. volcanoes, and this trip will visit a range of lava types and compositions including tholeiitic and calc-alkaline basalt flows, cinder cones, and rhyolitic domes and tuffs. Stops will include early distal basalts as well as the youngest intracaldera obsidian flow.

  17. Modeling of the Guagua Pichincha volcano (Ecuador) lahars

    Science.gov (United States)

    Canuti, Paolo; Casagli, Nicola; Catani, Filippo; Falorni, Giacomo

    Lahars, here defined as debris flows of volcanic origin, are rapid mass movements that pose a serious threat to cities located in the vicinity of many volcanoes. Quito, capital city of Ecuador and placed at the foot of the Pichincha volcano complex, is exposed to serious inundation hazard as part of the city is built on numerous deposits of large lahars that have occurred in the last 10,000 years. The objective of this paper is to model the potential lahars of the Pichincha volcano to predict inundation areas within the city of Quito. For this purpose two models that apply different approaches were utilized and their results were compared. The programs used were LAHARZ, a semi-empirical model conceived by the United States Geological Survey (USGS), and FLO-2D, a hydraulic model distributed by FLO Software Inc. LAHARZ is designed as a rapid, objective and reproducible automated method for mapping areas of potential lahar inundation (Proc. First Int. Conf. on Debris Flow Hazards Mitigation, San Francisco, USA, ASCE, 1998, p. 176). FLO-2D is a two-dimensional flood routing model for simulating overland flow on complex surfaces such as floodplains, alluvial fans or urbanized areas (FLO-2D Users manual, version 99.2). Both models run within geographical information systems (GIS). Fieldwork was focused on collecting all available information involved in lahar modeling. A total of 49 channel cross-sections were measured along the two main streams and stratigraphic investigations were carried out on the fans to estimate the volume of previous events. A global positioning system was utilized to determine the coordinates of each cross-section. Further data collection concerned topography, rainfall characteristics and ashfall thicknesses. All fieldwork was carried out in cooperation with the Instituto Geofisico of the Escuela Politecnica Nacional. Modeling in a GIS environment greatly aided the exportation of results for the creation of thematic maps and facilitated model

  18. Análisis del cambio de agenda en política exterior de México hacia Estados Unidos en materia comercial, durante la presidencia de Vicente Fox, periodo 2000-2006

    OpenAIRE

    Parra Murcia, Lina María

    2013-01-01

    El objetivo de la presente monografía sintetiza el cambio de agenda en política exterior de México hacia Estados Unidos desde la firma del Tratado de Libre Comercio de América del Norte, hasta la llegada a la presidencia del Partido Acción Nacional en el 2000 con Vicente Fox.

  19. Tratamiento de pacientes con fracturas por proyectil de arma de fuego de baja velocidad, Hospital Universitario San Vicente de Paúl, Medellín, 2002-2003 Management of the patients with grade I open fractures by low-velocity gunshots in San Vicente de Paúl University Hospital, 2002-2003

    Directory of Open Access Journals (Sweden)

    Alejandro Uribe Ríos

    2007-03-01

    Full Text Available El propósito del presente trabajo fue evaluar el resultado del manejo de fracturas grado I producidas por proyectil de arma de fuego de baja velocidad, sin lavado y desbridamiento quirúrgico en el momento del ingreso al hospital. Se realizó un estudio retrospectivo evaluando las historias clínicas de los pacientes que ingresaban con este diagnóstico al servicio de urgencias adultos del HUSVP entre enero de 2002 y junio de 2003. Se hizo seguimiento de 77 fracturas en 74 pacientes, hasta lograr la consolidación clínica y radiológica de las fracturas. Todos los pacientes recibieron tratamiento antibiótico según los protocolos del servicio de ortopedia. Se encontró mayor frecuencia de fracturas de huesos largos: tibia (19%, fémur (18% y húmero (17%. Ningún paciente requirió lavado quirúrgico durante el manejo. Del total de fracturas, 53,2% recibieron manejo no quirúrgico, 40,2% reducción abierta y fijación interna y 6,6% fijación externa; ninguno de los pacientes presentó signos de infección durante la evolución. Con este trabajo se puede recomendar el tratamiento sin lavado y desbridamiento quirúrgico para los pacientes con fracturas grado I producidas por proyectil de arma de fuego de baja velocidad The purpose of this study was to evaluate the result of the management of grade I open fractures by low-velocity gunshots, without surgical debridement. A retrospective study evaluating the clinical histories of patients admitted in the emergency room with this diagnose between January 2002 and June 2003. Search was carried out within 77 fractures in 74 patients, until achieving the clinical and radiological consolidation of the fractures. All the patients received antibiotic treatment according to the protocols of the trauma service. The majority of fractures occurred in long bones: Tibia (19%, Femur (18% and Humerus (17%. No patient required surgical debridement in the evolution of the treatment. A total of 53.2% of the fractures was treated nonoperatively, 40.2% with open reduction and internal fixation, and 6.6% external fixation. None of the patients showed signs of infection in the evolution. In our experience open fractures grade I by low-velocity gunshots can be treated without surgical debridement. With this work we can recommend the treatment without surgical debridement for the patients with open fractures grade I by lowvelocity gunshots.

  20. Development of pediatric hydronephrosis patients visiting the San Vicente Foundation University Hospital, Medellín, Colombia = Evolución de los pacientes pediátricos con diagnóstico de hidronefrosis que consultaron al Hospital Universitario San Vicente Fundación, Medellín, Colombia, entre 1960 y 2010

    Directory of Open Access Journals (Sweden)

    Niño Serna, Laura

    2014-04-01

    Full Text Available INTRODUCTION: Hydronephrosis is one of the most common congenital malformations detected on prenatal ultrasounds. Moderate and severe cases are often associated with ureteropelvic junction obstruction, posterior urethral valves and vesicoureteral reflux (VUR. OBJECTIVE: To describe a series of pediatric patients diagnosed with hydronephrosis determining their etiology, prenatal diagnosis and frequency of chronic kidney disease (CKD. MATERIALS AND METHODS: A descriptive, retrospective study, through the reviewing of records of patients attending the outpatient department of pediatric nephrology at St. Vincent Hospital Foundation of Medellin, Colombia, for diagnosis of hydronephrosis during the years 1960-2010. RESULTS: The records of 924 patients between the ages of 0 and 18 years were evaluated, 35.7% female and 64.3% male. In 14.4% (133 the diagnosis was prenatal. Hydronephrosis was bilateral in 198 patients (28.5%. In 18.3% (169 no associated urological abnormality was found, reaching 4.2% in CKD (7. Ureteropelvic stenosis was diagnosed in 23.3% (216 followed with 21.5% VUR (199 and posterior urethral valves in 9.4% (87, reaching 10.2% ERC (93 CONCLUSION: Hydronephrosis allows the detection of underlying urologic abnormalities susceptible of trace or surgical correction. Prenatal diagnosis has allowed finding severe cases avoiding future complications such as urinary tract infection, presence of renal scarring and even chronic renal disease.

  1. Management of abdominal wall defects (gastroschisis and omphalocele) at Hospital Universitario San Vicente de Paúl, in Medellín, Colombia, 1998-2006 Tratamiento de los defectos de la pared abdominal (gastrosquisis y onfalocele) en el Hospital Universitario San Vicente de Paúl, Medellín, 1998-2006

    OpenAIRE

    Mirian Natalia Herrera Toro; María Elena Arango Rave; Paula María Jaramillo Gómez

    2010-01-01

    Introduction: Gastroschisis and omphalocele are neon...

  2. Morbidity and mortality in patients over 60 years with hip fracture in the San Vicente Foundation University Hospital of Medellín = Morbilidad y mortalidad en pacientes mayores de 60 años con fractura de cadera en el Hospital Universitario San Vicente Fundación, de Medellín, Colombia

    Directory of Open Access Journals (Sweden)

    Pardo Aluma, Edgar Enrique

    2012-10-01

    Full Text Available Clinical, radiological and functional outcomes among adults 60 years or older who suffer hip fractures have been extensively describe in worldwide literature, as well as the risk factors in determining mortality, functionality and appearance of postoperative complications, nonetheless, the information regarding Colombian patients is limited.Between March 2009 and June 2010, 106 elderly patients need surgery for hip fracture, with mean age of 79 years old, seventy-eight point three percent 78.3% were female and 21.7% were male.This result were similar to those previously published, showing high resemblance between this population and the formerly studied; both, high underlying chronic conditions and post operative mortality rates; poor functional outcomes, and the large number complications that come along with the treatment of these patients.

  3. The Activity Of The Colima Volcano From 1999 To The 2003

    Science.gov (United States)

    Suarez-Plascencia, C.; Nuñez-Cornu, F.; Reyes-Davila, G.; Diaz-Torres, J.

    2004-12-01

    The Colima Volcano has shown intense activity since the 10th of February 1999. This explosive activity of 1999 and 2000 generated an elliptical crater of 260 x 265 m, which began to be filled in by a Dome from October 2001, at February 2002 the volume of the Dome was of approximately 2x106 m3 spreading over the edges of the crater and starting to flow during the following 11 months, in this period small lobes formed on the flanks of the volcano. Constants landslides originated in these lobes filled ravines of San Antonio, El Cordovan, El Muerto, El Cafesito and Atenquique (subsequent to the earthquake of January of the 2003) with non consolidated materials, increasing the hazard of lahares during the rainy season. Beginning February 2003 the explosive activity increased, most significantly from April to August, when the plumes reached heights over 2000 meters above the crater, occasionally small pyroclastic flows were observed. The explosive events continue to date. We mapped the most significant morphological changes produced at the summit by the activity described, using three photogrammetric flights conducted by INEGI (2003) and CARTODATA (2002 and 2003). These were data complemented by a very large number of photographs taken on helicopter flights undertaken during these months. Both the photographs and the digital mapping have provided detailed information to quantify the geomorphologic evolution of the superior section of the volcano, in the course of the last five years.

  4. EARTHQUAKES - VOLCANOES (Causes - Forecast - Counteraction)

    Science.gov (United States)

    Tsiapas, Elias

    2014-05-01

    Earthquakes and volcanoes are caused by: 1)Various liquid elements (e.g. H20, H2S, S02) which emerge from the pyrosphere and are trapped in the space between the solid crust and the pyrosphere (Moho discontinuity). 2)Protrusions of the solid crust at the Moho discontinuity (mountain range roots, sinking of the lithosphere's plates). 3)The differential movement of crust and pyrosphere. The crust misses one full rotation for approximately every 100 pyrosphere rotations, mostly because of the lunar pull. The above mentioned elements can be found in small quantities all over the Moho discontinuity, and they are constantly causing minor earthquakes and small volcanic eruptions. When large quantities of these elements (H20, H2S, SO2, etc) concentrate, they are carried away by the pyrosphere, moving from west to east under the crust. When this movement takes place under flat surfaces of the solid crust, it does not cause earthquakes. But when these elements come along a protrusion (a mountain root) they concentrate on its western side, displacing the pyrosphere until they fill the space created. Due to the differential movement of pyrosphere and solid crust, a vacuum is created on the eastern side of these protrusions and when the aforementioned liquids overfill this space, they explode, escaping to the east. At the point of their escape, these liquids are vaporized and compressed, their flow accelerates, their temperature rises due to fluid friction and they are ionized. On the Earth's surface, a powerful rumbling sound and electrical discharges in the atmosphere, caused by the movement of the gasses, are noticeable. When these elements escape, the space on the west side of the protrusion is violently taken up by the pyrosphere, which collides with the protrusion, causing a major earthquake, attenuation of the protrusions, cracks on the solid crust and damages to structures on the Earth's surface. It is easy to foresee when an earthquake will occur and how big it is

  5. San Cástulo

    OpenAIRE

    Jaramillo, Tania

    2014-01-01

    Porque no te acercas y nos entendemos, nos vamos cayendo por el lucro de la colonia, nos perdemos en la esquina de san Cástulo y nos vamos volando a Eleuterio, en una noche, que la luna nos vigile, que nos aguarde, que retrase el día, y la gente permanezca dormida o despierta pero temerosa de la noche, de los policías y los delincuentes, de los violadores y de nosotros, de la vida nocturna, de ese lugar oscuro en alguna parte, donde nos convertimos y aullamos.

  6. San Cástulo

    OpenAIRE

    Jaramillo, Tania

    2014-01-01

    Porque no te acercas y nos entendemos, nos vamos cayendo por el lucro de la colonia, nos perdemos en la esquina de san Cástulo y nos vamos volando a Eleuterio, en una noche, que la luna nos vigile, que nos aguarde, que retrase el día, y la gente permanezca dormida o despierta pero temerosa de la noche, de los policías y los delincuentes, de los violadores y de nosotros, de la vida nocturna, de ese lugar oscuro en alguna parte, donde nos convertimos y aullamos.

  7. Coma blisters sans coma.

    Science.gov (United States)

    Heinisch, Silke; Loosemore, Michael; Cusack, Carrie A; Allen, Herbert B

    2012-09-01

    Coma blisters (CBs) are self-limited lesions that occur in regions of pressure during unconscious states classically induced by barbiturates. We report a case of CBs sans coma that were histologically confirmed in a 41-year-old woman who developed multiple tense abdominal bullae with surrounding erythema following a transatlantic flight. Interestingly, the patient was fully conscious and denied medication use or history of medical conditions. A clinical diagnosis of CBs was confirmed by histopathologic findings of eccrine gland necrosis, a hallmark of these bulIous lesions.

  8. Spreading and collapse of big basaltic volcanoes

    Science.gov (United States)

    Puglisi, Giuseppe; Bonforte, Alessandro; Guglielmino, Francesco; Peltier, Aline; Poland, Michael

    2016-04-01

    Among the different types of volcanoes, basaltic ones usually form the most voluminous edifices. Because volcanoes are growing on a pre-existing landscape, the geologic and structural framework of the basement (and earlier volcanic landforms) influences the stress regime, seismicity, and volcanic activity. Conversely, the masses of these volcanoes introduce a morphological anomaly that affects neighboring areas. Growth of a volcano disturbs the tectonic framework of the region, clamps and unclamps existing faults (some of which may be reactivated by the new stress field), and deforms the substratum. A volcano's weight on its basement can trigger edifice spreading and collapse that can affect populated areas even at significant distance. Volcano instability can also be driven by slow tectonic deformation and magmatic intrusion. The manifestations of instability span a range of temporal and spatial scales, ranging from slow creep on individual faults to large earthquakes affecting a broad area. In the frame of MED-SVU project, our work aims to investigate the relation between basement setting and volcanic activity and stability at three Supersite volcanoes: Etna (Sicily, Italy), Kilauea (Island of Hawaii, USA) and Piton de la Fournaise (La Reunion Island, France). These volcanoes host frequent eruptive activity (effusive and explosive) and share common features indicating lateral spreading and collapse, yet they are characterized by different morphologies, dimensions, and tectonic frameworks. For instance, the basaltic ocean island volcanoes of Kilauea and Piton de la Fournaise are near the active ends of long hotspot chains while Mt. Etna has developed at junction along a convergent margin between the African and Eurasian plates and a passive margin separating the oceanic Ionian crust from the African continental crust. Magma supply and plate velocity also differ in the three settings, as to the sizes of the edifices and the extents of their rift zones. These

  9. The seismicity of Marapi volcano, West Sumatra.

    Science.gov (United States)

    D'Auria, L.

    2009-04-01

    Marapi is one of the active volcanoes in West Sumatra. It is a stratovolcano with an edifice that is elongated in the ENE-WSW direction. Its elevation is about 2,900 m a.s.l. The summit area is characterized by a caldera that contains some active craters aligned along the ENE-WSW direction. The Marapi volcano is an attractive region for tourists and hosts many small communities its surrounding areas. The recent history of Mt. Marapi is characterized by explosive activity at the summit craters. No lava flows have passed the rim of the summit caldera in recent times. The last eruption occurred on August 5, 2004, and consisted of moderate explosive activity from the central crater. In 1975 an eruption with magmatic and phreatic explosive phases and mudflows and lahars occurred that caused fatalities in the surrounding areas. Since 1980 other eruptions have occurred at Marapi volcano. Even if the explosive intensities of those eruptions have been small to moderate, in some cases, there were fatalities. A cooperation project started between Italy and Indonesia (COVIN) for the monitoring of volcanoes in West Sumatra. In the context of this project a monitoring centre has been set up at the Bukittinggi Observatory and a seismological monitoring system for Marapi volcano has been realized. This system is based on a broadband seismic network including 4 three-component stations. The data acquired by the broadband network of Marapi volcano are continuous recordings of the seismic signals starting from 19/10/2006. Volcano-Tectonic and Long Period events of Marapi volcano together with regional and teleseismic earthquakes are recorded. Several events of high magnitude located at short distances from the network were also recorded such as on March 6, 2007, when two events of Magnitudes Mw 6.4 and 6.3 were recorded with the epicentres near the Marapi volcano. During the following days, there was a sequence of hundreds of aftershocks. The preliminary analysis of the seismicity of

  10. San Diego's Capital Planning Process

    Science.gov (United States)

    Lytton, Michael

    2009-01-01

    This article describes San Diego's capital planning process. As part of its capital planning process, the San Diego Unified School District has developed a systematic analysis of functional quality at each of its school sites. The advantage of this approach is that it seeks to develop and apply quantifiable metrics and standards for the more…

  11. Los Angeles og San Francisco

    DEFF Research Database (Denmark)

    Ørstrup, Finn Rude

    1998-01-01

    Kompendium udarbejdet til en studierejse til Los Angeles og San Francisco april-maj 1998 Kunstakademiets Arkitektskole, Institut 3H......Kompendium udarbejdet til en studierejse til Los Angeles og San Francisco april-maj 1998 Kunstakademiets Arkitektskole, Institut 3H...

  12. Geologic Map of the Central San Juan Caldera Cluster, Southwestern Colorado

    Science.gov (United States)

    Lipman, Peter W.

    2006-01-01

    The San Juan Mountains are the largest erosional remnant of a composite volcanic field that covered much of the southern Rocky Mountains in middle Tertiary time. The San Juan field consists mainly of intermediate-composition lavas and breccias, erupted about 35-30 Ma from scattered central volcanoes (Conejos Formation) and overlain by voluminous ash-flow sheets erupted from caldera sources. In the central San Juan Mountains, eruption of at least 8,800 km3 of dacitic-rhyolitic magma as nine major ash flow sheets (individually 150-5,000 km3) was accompanied by recurrent caldera subsidence between 28.3 Ma and about 26.5 Ma. Voluminous andesitic-dacitic lavas and breccias erupted from central volcanoes prior to the ash-flow eruptions, and similar lava eruptions continued within and adjacent to the calderas during the period of more silicic explosive volcanism. Exposed calderas vary in size from 10 to 75 km in maximum dimension; the largest calderas are associated with the most voluminous eruptions.

  13. Geologic map of the central San Juan caldera cluster, southwestern Colorado

    Science.gov (United States)

    Lipman, Peter W.

    2006-01-01

    The San Juan Mountains are the largest erosional remnant of a composite volcanic field that covered much of the southern Rocky Mountains in middle Tertiary time. The San Juan field consists mainly of intermediate-composition lavas and breccias, erupted about 35-30 Ma from scattered central volcanoes (Conejos Formation) and overlain by voluminous ash-flow sheets erupted from caldera sources. In the central San Juan Mountains, eruption of at least 8,800 km3 of dacitic-rhyolitic magma as nine major ash flow sheets (individually 150-5,000 km3) was accompanied by recurrent caldera subsidence between 28.3 Ma and about 26.5 Ma. Voluminous andesitic-dacitic lavas and breccias erupted from central volcanoes prior to the ash-flow eruptions, and similar lava eruptions continued within and adjacent to the calderas during the period of more silicic explosive volcanism. Exposed calderas vary in size from 10 to 75 km in maximum dimension; the largest calderas are associated with the most voluminous eruptions.

  14. Seismic unrest at Katla Volcano- southern Iceland

    Science.gov (United States)

    jeddi, zeinab; Tryggvason, Ari; Gudmundsson, Olafur; Bödvarsson, Reynir; SIL Seismology Group

    2014-05-01

    Katla volcano is located on the propagating Eastern Volcanic Zone (EVZ) in South Iceland. It is located beneath Mýrdalsjökull ice-cap which covers an area of almost 600 km2, comprising the summit caldera and the eruption vents. 20 eruptions between 930 and 1918 with intervals of 13-95 years are documented at Katla which is one of the most active subglacial volcanoes in Iceland. Eruptions at Katla are mainly explosive due to the subglacial mode of extrusion and produce high eruption columns and catastrophic melt water floods (jökulhlaups). The present long Volcanic repose (almost 96 years) at Katla, the general unrest since 1955, and the 2010 eruption of the neighbouring Eyjafjallajökull volcano has prompted concerns among geoscientists about an imminent eruption. Thus, the volcano has been densely monitored by seismologists and volcanologists. The seismology group of Uppsala University as a partner in the Volcano Anatomy (VA) project in collaboration with the University of Iceland and the Icelandic Meteorological Office (IMO) installed 9 temporary seismic stations on and around the Mýrdalsjökull glacier in 2011. Another 10 permanent seismic stations are operated by IMO around Katla. The project's data collection is now finished and temporary stations were pulled down in August 2013. According to seismicity maps of the whole recording period, thousands of microearthquakes have occurred within the caldera region. At least three different source areas are active in Katla: the caldera region, the western Godaland region and a small cluster at the southern rim of Mýrdalsjökull near the glacial stream of Hafursarjökull. Seismicity in the southern flank has basically started after June 2011. The caldera events are mainly volcano-tectonic, while western and southern events are mostly long period (lp) and can be related to glacial or magmatic movement. One motivation of the VA Katla project is to better understand the physical mechanism of these lp events. Changes

  15. Volcanoes in the Classroom--an Explosive Learning Experience.

    Science.gov (United States)

    Thompson, Susan A.; Thompson, Keith S.

    1996-01-01

    Presents a unit on volcanoes for third- and fourth-grade students. Includes demonstrations; video presentations; building a volcano model; and inviting a scientist, preferably a vulcanologist, to share his or her expertise with students. (JRH)

  16. Volcanostratigraphic Approach for Evaluation of Geothermal Potential in Galunggung Volcano

    Science.gov (United States)

    Ramadhan, Q. S.; Sianipar, J. Y.; Pratopo, A. K.

    2016-09-01

    he geothermal systems in Indonesia are primarily associated with volcanoes. There are over 100 volcanoes located on Sumatra, Java, and in the eastern part of Indonesia. Volcanostratigraphy is one of the methods that is used in the early stage for the exploration of volcanic geothermal system to identify the characteristics of the volcano. The stratigraphy of Galunggung Volcano is identified based on 1:100.000 scale topographic map of Tasikmalaya sheet, 1:50.000 scale topographic map and also geological map. The schematic flowchart for evaluation of geothermal exploration is used to interpret and evaluate geothermal potential in volcanic regions. Volcanostratigraphy study has been done on Galunggung Volcano and Talaga Bodas Volcano, West Java, Indonesia. Based on the interpretation of topographic map and analysis of the dimension, rock composition, age and stress regime, we conclude that both Galunggung Volcano and Talaga Bodas Volcano have a geothermal resource potential that deserve further investigation.

  17. USGS U.S. Volcanoes with Elevated Status

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — Website provides list of elevated status volcanoes with access to activity updates and/or information releases for changes in activity at the volcanoes. activity at...

  18. INTERVIEW WITH VICENTE TALANQUER

    Directory of Open Access Journals (Sweden)

    Olga Lucia Castiblanco Abril

    2017-01-01

    Full Text Available OC: Dr. Talanquer, muchas gracias por acompañarnos y compartir con nuestros lectores algunos de sus conocimientos. Para empezar, nos gustaría saber de manera sintética su trayectoria. ¿Que está investigando en este momento en un tema tan complejo como lo es la formación de profesores de ciencias y la enseñanza de la química? VT: Gracias a ustedes. Yo me formé en la UNAM, en la Ciudad de México, como investigador en Química y en Fisicoquímica. No recibí formación formal en educación sino que me involucré en procesos de formación de profesores siendo investigador en ciencias, primero impartiendo cursos disciplinarios para maestros y poco a poco participando en actividades de formación que tenían algunos componentes pedagógicos. Mi interés en educación se incrementó notablemente cuando me invitaron a participar en la escritura de los libros de texto para la educación primaria de México. Esto fue entre 1995 y 1996. Yo hice parte del grupo de expertos disciplinarios a cargo de la escritura de los estos libros, pero desarrollamos el trabajo en colaboración con pedagogos y maestros de escuela básica. Como parte de esta labor, tuve la oportunidad de visitar escuelas y observar el trabajo en distintas aulas, lo que realmente me cautivó y me motivó a aprender más sobre educación de manera autodidacta. En el año 2000 me fui a los EE.UU. a trabajar en la Universidad de Arizona. Allí, mi trabajo inicial consistió en crear un nuevo programa de formación de profesores. En EE.UU. las universidades comúnmente se dividen en colegios: está el colegio de educación, el colegio de ciencias etc. Luego, cada colegio se divide en departamentos. El colegio de ciencias está dividido en el departamento de física, química, biología, etc. Cuando me contrataron en la Universidad de Arizona buscaban personas que pudieran trabajar en diversos departamentos dentro del colegio de ciencias y que estuvieran interesadas en crear un programa de formación docente dentro de este y no en el de educación. Así surgió el programa de formación en el que actualmente trabajo. Dentro de este programa doy cursos sobre planeación y evaluación en educación de las ciencias, pero también doy cursos de química en los niveles introductorios. Cuando fui contratado en la Universidad de Arizona tuve más tiempo para dedicarme a la investigación educativa en química y crear un grupo de investigación en esa área. También comencé a investigar sobre pensamiento docente con los colegas que creamos el programa de formación de profesores. Este programa se ofrece solo a nivel de pregrado, pues en mi universidad la formación de maestros a nivel posgrado ocurre en el colegio de educación. Los docentes que quieren hacer posgrado en el colegio de ciencias solo pueden completar maestrías y doctorados en cada disciplina científica, pero sin el componente de educativo.

  19. ¿Sueñan los escritores con obras electrónicas? La experiencia transmedial en Alba Cromm de Vicente Luis Mora

    Directory of Open Access Journals (Sweden)

    Roxana Ilasca

    2015-07-01

    Full Text Available http://dx.doi.org/10.5007/1807-9288.2015v11n1p209 A pesar de ser un modo de expresión cada vez menos usado, el blog desempeñó un papel significativo en la primera década del siglo XXI no solo en el ámbito de los medios de comunicación, sino también en el de la literatura. Al explorar las posibilidades creativas de esta forma de escritura, la novela del escritor español Vicente Luis Mora, Alba Cromm, otorga a la bitácora un uso intertextual e internextual con el fin de someter al lectoespectador a una experiencia compleja de transmedialidad. La obra transmedia se presenta como posibilidad de renovación tanto de la concepción del texto, como de Internet en tanto que herramienta para la creación literaria.

  20. Literatura hagiográfica latina en torno a los mártires Vicente, Sabina y Cristeta de Ávila (siglos VII-XI

    Directory of Open Access Journals (Sweden)

    Ferrer García, Felix A.

    2008-06-01

    Full Text Available In this article, the author gathers the important hagiographic tradition about ther 4th century martyrs Vicente, Sabina and Cristeta. The study focuses on the relation between a martyrological discourse, practically unkwnown during the Middle Ages, and the records and texts about other saints and martyrs that were more influential in their cultural and literary aspects. The role of the visigotic monarchy was really important in order to establish a group of texts deeply linked to a religious, social and cultural circumstances that, specially in the 12th and 13th century, with the birth of the romanesque art and culture, will be the real expression of the ecclesiastic orthodoxy. This hagiocracy had been settled before the islamic arrival into the Iberian peninsula.En este artículo el autor recoge toda la tradición hagiográfica sobre los mártires del siglo IV Vicente, Sabina y Cristeta, tratando de estudiar la interrelación entre un discurso martirial escasamente difundido en la alta Edad Media con algunas actas y pasiones de otras figuras más consolidadas tanto en el plano cultual como en el literario. El papel de la monarquía visigoda será clave a la hora de formalizar unos textos plenamente fundamentados en unos avatares religiosos, culturales y sociales que, a medio plazo, sobre todo en los siglos XI y XII, con la eclosión de las formas culturales y artísticas románicas, expresarán la ortodoxia eclesiástica a partir de una hagiocracia inaugurada antes de la arribada islámica a la península Ibérica.

  1. La Gestión de los Procesos de Vinculación en los Indicadores de la Universidad Laica VICENTE ROCAFUERTE de Guayaquil. Periodo 2013-2014

    Directory of Open Access Journals (Sweden)

    Linda Maldonado

    2015-11-01

    Full Text Available Uno de los objetivos del Consejo de Evaluación, Acreditación y Aseguramiento de la Calidad de la Educación Superior (CEAACES es contribuir al mejoramiento constante y sostenido de la calidad de la educación superior. La evaluación institucional realizada por este organismo al Departamento de Vinculación con la Sociedad de la Universidad Laica VICENTE ROCAFUERTE de Guayaquil en el año 2013, permitió analizar cada uno de los Indicadores correspondientes al Criterio Organización, validando evidencias solicitadas dentro del proceso, se pudo determinar la falta de gestión de procesos definidos que permitan desarrollar las actividades de Vinculación de forma organizada, interrelacionada y validada de manera coherente. Este artículo determina cómo la gestión de los procesos incide en el cumplimiento de los Indicadores y en la proyección social de la institución.  Posterior al proceso mencionado la Universidad Laica VICENTE ROCAFUERTE de Guayaquil, presenta al CEAACES un Plan de Mejoras, con el propósito fundamental de elevar los niveles de calidad, dentro del mismo se consideran algunos indicadores de Vinculación. Se crea entonces el Reglamento de Vinculación con la Sociedad y el Plan Quinquenal de Vinculación Institucional, los mismos que fueron aprobados en Sesión Extraordinaria de Consejo Universitario el 18 de julio de 2014.

  2. The Cenozoic Volcanoes in Northeast China

    Institute of Scientific and Technical Information of China (English)

    LIU Jiaqi; HAN Jingtai; GUO Zhengfu

    2002-01-01

    There are more than 600 Cenozoic volcanic cones and craters with abeut 50 000 km2of lava flows in northeast China, which formed many volcanic clusters and shown the features of the continental rift - type volcanoes. Most volcanic activities in this area, especially in the east part of Songliao graben, were usually controlled by rifts and faults with the main direction of NE / NNE in parallel and become younger from the central graben towards its both sides, especially to the east continental margin. It is revealed that the volcanism occurred in northeast China was as strong as that occurred in Japan during the Miocene and the Quaternary. The Quaternary basalt that is usually distributed along river valley is called "valley basalt"while Neogene basalt usually distributed in the top of mounts is called "high position basalt". These volcanoes and volcanic rocks are usually composed of alkaline basalts with ultramafic inclusions, except Changbaishan volcano that is built by trachyte and pantellerite.

  3. Renewed unrest at Mount Spurr Volcano, Alaska

    Science.gov (United States)

    Power, John A.

    2004-01-01

    The Alaska Volcano Observatory (AVO),a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys, has detected unrest at Mount Spurr volcano, located about 125 km west of Anchorage, Alaska, at the northeast end of the Aleutian volcanic arc.This activity consists of increased seismicity melting of the summit ice cap, and substantial rates of C02 and H2S emission.The current unrest is centered beneath the volcano's 3374-m-high summit, whose last known eruption was 5000–6000 years ago. Since then, Crater Peak, 2309 m in elevation and 4 km to the south, has been the active vent. Recent eruptions occurred in 1953 and 1992.

  4. Living with Volcanoes: Year Eleven Teaching Resource Unit.

    Science.gov (United States)

    Le Heron, Kiri; Andrews, Jill; Hooks, Stacey; Larnder, Michele; Le Heron, Richard

    2000-01-01

    Presents a unit on volcanoes and experiences with volcanoes that helps students develop geography skills. Focuses on four volcanoes: (1) Rangitoto Island; (2) Lake Pupuke; (3) Mount Smart; and (4) One Tree Hill. Includes an answer sheet and resources to use with the unit. (CMK)

  5. How Do Volcanoes Affect Human Life? Integrated Unit.

    Science.gov (United States)

    Dayton, Rebecca; Edwards, Carrie; Sisler, Michelle

    This packet contains a unit on teaching about volcanoes. The following question is addressed: How do volcanoes affect human life? The unit covers approximately three weeks of instruction and strives to present volcanoes in an holistic form. The five subject areas of art, language arts, mathematics, science, and social studies are integrated into…

  6. Predicting the Timing and Location of the next Hawaiian Volcano

    Science.gov (United States)

    Russo, Joseph; Mattox, Stephen; Kildau, Nicole

    2010-01-01

    The wealth of geologic data on Hawaiian volcanoes makes them ideal for study by middle school students. In this paper the authors use existing data on the age and location of Hawaiian volcanoes to predict the location of the next Hawaiian volcano and when it will begin to grow on the floor of the Pacific Ocean. An inquiry-based lesson is also…

  7. Volcanoes muon imaging using Cherenkov telescopes

    Energy Technology Data Exchange (ETDEWEB)

    Catalano, O. [INAF, Istituto di Astrofisica Spaziale e Fisica cosmica di Palermo, via U. La Malfa 153, I-90146 Palermo (Italy); Del Santo, M., E-mail: melania@ifc.inaf.it [INAF, Istituto di Astrofisica Spaziale e Fisica cosmica di Palermo, via U. La Malfa 153, I-90146 Palermo (Italy); Mineo, T.; Cusumano, G.; Maccarone, M.C. [INAF, Istituto di Astrofisica Spaziale e Fisica cosmica di Palermo, via U. La Malfa 153, I-90146 Palermo (Italy); Pareschi, G. [INAF Osservatorio Astronomico di Brera, Via E. Bianchi 46, I-23807, Merate (Italy)

    2016-01-21

    A detailed understanding of a volcano inner structure is one of the key-points for the volcanic hazards evaluation. To this aim, in the last decade, geophysical radiography techniques using cosmic muon particles have been proposed. By measuring the differential attenuation of the muon flux as a function of the amount of rock crossed along different directions, it is possible to determine the density distribution of the interior of a volcano. Up to now, a number of experiments have been based on the detection of the muon tracks crossing hodoscopes, made up of scintillators or nuclear emulsion planes. Using telescopes based on the atmospheric Cherenkov imaging technique, we propose a new approach to study the interior of volcanoes detecting of the Cherenkov light produced by relativistic cosmic-ray muons that survive after crossing the volcano. The Cherenkov light produced along the muon path is imaged as a typical annular pattern containing all the essential information to reconstruct particle direction and energy. Our new approach offers the advantage of a negligible background and an improved spatial resolution. To test the feasibility of our new method, we have carried out simulations with a toy-model based on the geometrical parameters of ASTRI SST-2M, i.e. the imaging atmospheric Cherenkov telescope currently under installation onto the Etna volcano. Comparing the results of our simulations with previous experiments based on particle detectors, we gain at least a factor of 10 in sensitivity. The result of this study shows that we resolve an empty cylinder with a radius of about 100 m located inside a volcano in less than 4 days, which implies a limit on the magma velocity of 5 m/h.

  8. Applications of geophysical methods to volcano monitoring

    Science.gov (United States)

    Wynn, Jeff; Dzurisin, Daniel; Finn, Carol A.; Kauahikaua, James P.; Lahusen, Richard G.

    2006-01-01

    The array of geophysical technologies used in volcano hazards studies - some developed originally only for volcano monitoring - ranges from satellite remote sensing including InSAR to leveling and EDM surveys, campaign and telemetered GPS networks, electronic tiltmeters and strainmeters, airborne magnetic and electromagnetic surveys, short-period and broadband seismic monitoring, even microphones tuned for infrasound. They include virtually every method used in resource exploration except large-scale seismic reflection. By “geophysical ” we include both active and passive methods as well as geodetic technologies. Volcano monitoring incorporates telemetry to handle high-bandwith cameras and broadband seismometers. Critical geophysical targets include the flux of magma in shallow reservoir and lava-tube systems, changes in active hydrothermal systems, volcanic edifice stability, and lahars. Since the eruption of Mount St. Helens in Washington State in 1980, and the eruption at Pu’u O’o in Hawai’i beginning in 1983 and still continuing, dramatic advances have occurred in monitoring technology such as “crisis GIS” and lahar modeling, InSAR interferograms, as well as gas emission geochemistry sampling, and hazards mapping and eruption predictions. The on-going eruption of Mount St. Helens has led to new monitoring technologies, including advances in broadband Wi-Fi and satellite telemetry as well as new instrumentation. Assessment of the gap between adequate monitoring and threat at the 169 potentially dangerous Holocene volcanoes shows where populations are dangerously exposed to volcanic catastrophes in the United States and its territories . This paper focuses primarily on Hawai’ian volcanoes and the northern Pacific and Cascades volcanoes. The US Geological Survey, the US National Park System, and the University of Utah cooperate in a program to monitor the huge Yellowstone volcanic system, and a separate observatory monitors the restive Long Valley

  9. Volcanoes muon imaging using Cherenkov telescopes

    Science.gov (United States)

    Catalano, O.; Del Santo, M.; Mineo, T.; Cusumano, G.; Maccarone, M. C.; Pareschi, G.

    2016-01-01

    A detailed understanding of a volcano inner structure is one of the key-points for the volcanic hazards evaluation. To this aim, in the last decade, geophysical radiography techniques using cosmic muon particles have been proposed. By measuring the differential attenuation of the muon flux as a function of the amount of rock crossed along different directions, it is possible to determine the density distribution of the interior of a volcano. Up to now, a number of experiments have been based on the detection of the muon tracks crossing hodoscopes, made up of scintillators or nuclear emulsion planes. Using telescopes based on the atmospheric Cherenkov imaging technique, we propose a new approach to study the interior of volcanoes detecting of the Cherenkov light produced by relativistic cosmic-ray muons that survive after crossing the volcano. The Cherenkov light produced along the muon path is imaged as a typical annular pattern containing all the essential information to reconstruct particle direction and energy. Our new approach offers the advantage of a negligible background and an improved spatial resolution. To test the feasibility of our new method, we have carried out simulations with a toy-model based on the geometrical parameters of ASTRI SST-2M, i.e. the imaging atmospheric Cherenkov telescope currently under installation onto the Etna volcano. Comparing the results of our simulations with previous experiments based on particle detectors, we gain at least a factor of 10 in sensitivity. The result of this study shows that we resolve an empty cylinder with a radius of about 100 m located inside a volcano in less than 4 days, which implies a limit on the magma velocity of 5 m/h.

  10. The origin of the Hawaiian Volcano Observatory

    Energy Technology Data Exchange (ETDEWEB)

    Dvorak, John [University of Hawaii' s Institute for Astronomy (United States)

    2011-05-15

    I first stepped through the doorway of the Hawaiian Volcano Observatory in 1976, and I was impressed by what I saw: A dozen people working out of a stone-and-metal building perched at the edge of a high cliff with a spectacular view of a vast volcanic plain. Their primary purpose was to monitor the island's two active volcanoes, Kilauea and Mauna Loa. I joined them, working for six weeks as a volunteer and then, years later, as a staff scientist. That gave me several chances to ask how the observatory had started.

  11. Volcano geodesy in the Cascade arc, USA

    Science.gov (United States)

    Poland, Michael P.; Lisowski, Michael; Dzurisin, Daniel; Kramer, Rebecca; McLay, Megan; Pauk, Ben

    2017-08-01

    Experience during historical time throughout the Cascade arc and the lack of deep-seated deformation prior to the two most recent eruptions of Mount St. Helens might lead one to infer that Cascade volcanoes are generally quiescent and, specifically, show no signs of geodetic change until they are about to erupt. Several decades of geodetic data, however, tell a different story. Ground- and space-based deformation studies have identified surface displacements at five of the 13 major Cascade arc volcanoes that lie in the USA (Mount Baker, Mount St. Helens, South Sister, Medicine Lake, and Lassen volcanic center). No deformation has been detected at five volcanoes (Mount Rainier, Mount Hood, Newberry Volcano, Crater Lake, and Mount Shasta), and there are not sufficient data at the remaining three (Glacier Peak, Mount Adams, and Mount Jefferson) for a rigorous assessment. In addition, gravity change has been measured at two of the three locations where surveys have been repeated (Mount St. Helens and Mount Baker show changes, while South Sister does not). Broad deformation patterns associated with heavily forested and ice-clad Cascade volcanoes are generally characterized by low displacement rates, in the range of millimeters to a few centimeters per year, and are overprinted by larger tectonic motions of several centimeters per year. Continuous GPS is therefore the best means of tracking temporal changes in deformation of Cascade volcanoes and also for characterizing tectonic signals so that they may be distinguished from volcanic sources. Better spatial resolution of volcano deformation can be obtained through the use of campaign GPS, semipermanent GPS, and interferometric synthetic aperture radar observations, which leverage the accumulation of displacements over time to improve signal to noise. Deformation source mechanisms in the Cascades are diverse and include magma accumulation and withdrawal, post-emplacement cooling of recent volcanic deposits, magmatic

  12. Volcano geodesy in the Cascade arc, USA

    Science.gov (United States)

    Poland, Michael; Lisowski, Michael; Dzurisin, Daniel; Kramer, Rebecca; McLay, Megan; Pauk, Benjamin

    2017-01-01

    Experience during historical time throughout the Cascade arc and the lack of deep-seated deformation prior to the two most recent eruptions of Mount St. Helens might lead one to infer that Cascade volcanoes are generally quiescent and, specifically, show no signs of geodetic change until they are about to erupt. Several decades of geodetic data, however, tell a different story. Ground- and space-based deformation studies have identified surface displacements at five of the 13 major Cascade arc volcanoes that lie in the USA (Mount Baker, Mount St. Helens, South Sister, Medicine Lake, and Lassen volcanic center). No deformation has been detected at five volcanoes (Mount Rainier, Mount Hood, Newberry Volcano, Crater Lake, and Mount Shasta), and there are not sufficient data at the remaining three (Glacier Peak, Mount Adams, and Mount Jefferson) for a rigorous assessment. In addition, gravity change has been measured at two of the three locations where surveys have been repeated (Mount St. Helens and Mount Baker show changes, while South Sister does not). Broad deformation patterns associated with heavily forested and ice-clad Cascade volcanoes are generally characterized by low displacement rates, in the range of millimeters to a few centimeters per year, and are overprinted by larger tectonic motions of several centimeters per year. Continuous GPS is therefore the best means of tracking temporal changes in deformation of Cascade volcanoes and also for characterizing tectonic signals so that they may be distinguished from volcanic sources. Better spatial resolution of volcano deformation can be obtained through the use of campaign GPS, semipermanent GPS, and interferometric synthetic aperture radar observations, which leverage the accumulation of displacements over time to improve signal to noise. Deformation source mechanisms in the Cascades are diverse and include magma accumulation and withdrawal, post-emplacement cooling of recent volcanic deposits, magmatic

  13. 78 FR 39610 - Safety Zone; Big Bay Boom, San Diego Bay; San Diego, CA

    Science.gov (United States)

    2013-07-02

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Big Bay Boom, San Diego Bay; San Diego, CA... temporary safety zones upon the navigable waters of the San Diego Bay for the annual Port of San Diego... Sector San Diego, Coast Guard; telephone 619-278-7261, email d11marineeventssd@uscg.mil . If you have...

  14. 75 FR 38412 - Safety Zone; San Diego POPS Fireworks, San Diego, CA

    Science.gov (United States)

    2010-07-02

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego POPS Fireworks, San Diego, CA... zone on the ] navigable waters of San Diego Bay in support of the San Diego POPS Fireworks. This safety.... Coast Guard Sector San Diego, CA; telephone 619-278- 7262, e-mail Shane.E.Jackson@uscg.mil . If you have...

  15. 78 FR 42027 - Safety Zone; San Diego Bayfair; Mission Bay, San Diego, CA

    Science.gov (United States)

    2013-07-15

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Bayfair; Mission Bay, San Diego... proposing a temporary safety zone on the navigable waters of Mission Bay in San Diego, CA for the San Diego..., call or email Lieutenant John Bannon, Waterways Management, U.S. Coast Guard Sector San Diego...

  16. 78 FR 29289 - Safety Zone; Big Bay Boom, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2013-05-20

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Big Bay Boom, San Diego Bay, San Diego, CA... establish four temporary safety zones upon the navigable waters of San Diego ] Bay for the Port of San Diego... Management, U.S. Coast Guard Sector San Diego; telephone (619) 278-7261, email John.E.Bannon@uscg.mil . If...

  17. 78 FR 53245 - Safety Zone; San Diego Bayfair; Mission Bay, San Diego, CA

    Science.gov (United States)

    2013-08-29

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Bayfair; Mission Bay, San Diego... temporary safety zone upon the navigable waters of Mission Bay in San Diego, CA for the annual San Diego... Management, U.S. Coast Guard Sector San Diego; telephone (619) 278-7261, email John.E.Bannon@uscg.mil . If...

  18. Metal and trace element sediment assessment from two estuarine systems: Santos/Sao Vicente and Cananeia, State of Sao Paulo, Brazil; Avaliacao da concentracao de metais e outros elementos de interesse em amostras de sedimentos dos estuarios de Santos/Sao Vicente e Cananeia, estado de Sao Paulo, Brasil

    Energy Technology Data Exchange (ETDEWEB)

    Amorim, Eduardo Paulo de

    2012-07-01

    This study evaluated some toxic metals such as Cd, Hg and Pb and some other major and trace elements in surface sediment samples, from two different systems under different degrees of anthropogenic actions: the estuarine system of Santos/Sao Vicente and the southern part of the Cananeia estuary, both on the Sao Paulo state coast. Sediment samples were collected in 16 stations in the Santos/Sao Vicente estuary and 13 stations in the Cananeia estuary, during summer and winter of 2005 and 2006, in both estuaries. Three analytical techniques were used: NAA, AAS and ICP OES. NAA was used for the quantification of major element concentration levels (Ca, Fe and Na), trace elements (As, Ba, Br, Cd, Co, Cu, Cr, Cs, Hf, Rb, Sb, Sc, Se, Ta, Th, U, and Zn and rare earths elements La, Ce, Eu, Nd, Sm, Lu, Tb, Yb). ICP OES was used for determination of the concentration levels of Al, Ba, Be, Bi, B, Cd, Co, Pb, Cu, Cr, Sn, Sr, Fe, Li, Mn, Mo, Ni, Tl, Ti, V and Zn. AAS for Cd and Pb quantification through graphite furnace (GF AAS) and Hg through cold vapor generation (CV AAS). Methodology validation according to precision and accuracy was performed by reference material analyses for the three analytical techniques used. Detection and quantification limits were calculated for each element evaluated. Seasonal variations (summer and winter), spatial and temporal (2005 e 2006) variations of metals and trace elements were also evaluated. In the Santos estuary, in general, metal and trace element concentrations , organic matter content and % of pelitic fraction found in the Santos channel (area 1) were higher than those of the Santos Bay (area 2) and Sao Vicente channel (area 3). Area 1 suffers high impact from industrial activities from the Cubatao region and Santos port. The sediments from station 14 (area 3, Sao Vicente channel), showed the same behavior of those from area 1, suffering influence from the industrial pole and located in a mangrove area. In comparison with TEL and PEL

  19. Volcano shapes, entropies, and eruption probabilities

    Science.gov (United States)

    Gudmundsson, Agust; Mohajeri, Nahid

    2014-05-01

    We propose that the shapes of polygenetic volcanic edifices reflect the shapes of the associated probability distributions of eruptions. In this view, the peak of a given volcanic edifice coincides roughly with the peak of the probability (or frequency) distribution of its eruptions. The broadness and slopes of the edifices vary widely, however. The shapes of volcanic edifices can be approximated by various distributions, either discrete (binning or histogram approximation) or continuous. For a volcano shape (profile) approximated by a normal curve, for example, the broadness would be reflected in its standard deviation (spread). Entropy (S) of a discrete probability distribution is a measure of the absolute uncertainty as to the next outcome/message: in this case, the uncertainty as to time and place of the next eruption. A uniform discrete distribution (all bins of equal height), representing a flat volcanic field or zone, has the largest entropy or uncertainty. For continuous distributions, we use differential entropy, which is a measure of relative uncertainty, or uncertainty change, rather than absolute uncertainty. Volcano shapes can be approximated by various distributions, from which the entropies and thus the uncertainties as regards future eruptions can be calculated. We use the Gibbs-Shannon formula for the discrete entropies and the analogues general formula for the differential entropies and compare their usefulness for assessing the probabilities of eruptions in volcanoes. We relate the entropies to the work done by the volcano during an eruption using the Helmholtz free energy. Many factors other than the frequency of eruptions determine the shape of a volcano. These include erosion, landslides, and the properties of the erupted materials (including their angle of repose). The exact functional relation between the volcano shape and the eruption probability distribution must be explored for individual volcanoes but, once established, can be used to

  20. Towards Developing Systematics for Using Periodic Studies of the Hydrothermal Manifestations as Effective Tool for Monitoring Largely 'inaccessible' Volcanoes

    Science.gov (United States)

    Alam, M.

    2010-12-01

    The San José and Tupungatito volcanoes, located near Santiago (Chile), are the potential hazards, given their geological and historical record of explosive eruptions with pyroclastic flows, most recently in 1960 and 1987 respectively (Global Volcanism Program, Smithsonian Institution). What aggravates the potential risk of these very high (>5290m elevation) snow- and ice-covered volcanoes is their location at the source of relatively narrow mountain drainage systems that feed into the Maipo River, flowing through the southern outskirts of Santiago. Sector-collapse and debris-flow, as a result of volcano-ice/snow interaction, can form lahars causing immense destruction to the life and property in the Maipo Valley (Cajón del Maipo). These lahars can cause submergence and burial of vast downstream areas under several meters thick sediment, as in the case of 1980 eruption of Mount St. Helens, USA. In the event of a major eruption, Santiago city will be at peril, with all the drinking water supply installations either destroyed or contaminated to the extent of being abandoned. Besides, ash and tephra will halt the air traffic in the region, particularly in Santiago-Mendoza sector between Chile and Argentina. In a proposed research project (for which funding is awaited from CONICYT, Chile under its Initiation into Research Funding Competition), hydrothermal systems associated with the aforementioned volcanoes will be periodically studied to monitor these volcanoes, in order to develop a Systematics for using the peripheral hydrothermal manifestations, together with nearby surface water bodies, as means for monitoring the activities of the volcano(es). Basic premise of this proposal is to use the relationship between volcanic and hydrothermal activities. Although this association has been observed at many volcanic centers, no attempt has been made to use this relation effectively as a tool for monitoring the volcanoes. Before an eruption or even with increased

  1. Riparian Habitat - San Joaquin River

    Data.gov (United States)

    California Department of Resources — The immediate focus of this study is to identify, describe and map the extent and diversity of riparian habitats found along the main stem of the San Joaquin River,...

  2. 1906 San Francisco, USA Images

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The 1906 San Francisco earthquake was the largest event (magnitude 8.3) to occur in the conterminous United States in the 20th Century. Recent estimates indicate...

  3. Growth and degradation of Hawaiian volcanoes: Chapter 3 in Characteristics of Hawaiian volcanoes

    Science.gov (United States)

    Clague, David A.; Sherrod, David R.; Poland, Michael P.; Takahashi, T. Jane; Landowski, Claire M.

    2014-01-01

    The 19 known shield volcanoes of the main Hawaiian Islands—15 now emergent, 3 submerged, and 1 newly born and still submarine—lie at the southeast end of a long-lived hot spot chain. As the Pacific Plate of the Earth’s lithosphere moves slowly northwestward over the Hawaiian hot spot, volcanoes are successively born above it, evolve as they drift away from it, and eventually die and subside beneath the ocean surface.

  4. Muons reveal the interior of volcanoes

    CERN Multimedia

    Francesco Poppi

    2010-01-01

    The MU-RAY project has the very challenging aim of providing a “muon X-ray” of the Vesuvius volcano (Italy) using a detector that records the muons hitting it after traversing the rock structures of the volcano. This technique was used for the first time in 1971 by the Nobel Prize-winner Louis Alvarez, who was searching for unknown burial chambers in the Chephren pyramid.   The location of the muon detector on the slopes of the Vesuvius volcano. Like X-ray scans of the human body, muon radiography allows researchers to obtain an image of the internal structures of the upper levels of volcanoes. Although such an image cannot help to predict ‘when’ an eruption might occur, it can, if combined with other observations, help to foresee ‘how’ it could develop and serves as a powerful tool for the study of geological structures. Muons come from the interaction of cosmic rays with the Earth's atmosphere. They are able to traverse layers of ro...

  5. The reawakening of Alaska's Augustine volcano

    Science.gov (United States)

    Power, John A.; Nye, Christopher J.; Coombs, Michelle L.; Wessels, Rick L.; Cervelli, Peter F.; Dehn, Jon; Wallace, Kristi L.; Freymueller, Jeffrey T.; Doukas, Michael P.

    2006-01-01

    Augustine volcano, in south central Alaska, ended a 20-year period of repose on 11 January 2006 with 13 explosive eruptions in 20 days. Explosive activity shifted to a quieter effusion of lava in early February, forming a new summit lava dome and two short, blocky lava flows by late March (Figure 1).

  6. Volcano hazards at Fuego and Acatenango, Guatemala

    Science.gov (United States)

    Vallance, J.W.; Schilling, S.P.; Matías, O.; Rose, William I.; Howell, M.M.

    2001-01-01

    The Fuego-Acatenango massif comprises a string of five or more volcanic vents along a north-south trend that is perpendicular to that of the Central American arc in Guatemala. From north to south known centers of volcanism are Ancient Acatenango, Yepocapa, Pico Mayor de Acatenango, Meseta, and Fuego. Volcanism along the trend stretches back more than 200,000 years. Although many of the centers have been active contemporaneously, there is a general sequence of younger volcanism, from north to south along the trend. This massive volcano complex towers more than 3500 meters (m) above the Pacific coastal plain to the south and 2000 m above the Guatemalan Highlands to the north. The volcano complex comprises remnants of multiple eruptive centers, which periodically have collapsed to form huge debris avalanches. The largest of these avalanches extended more than 50 kilometers (km) from its source and covered more than 300 square km. The volcano has potential to produce huge debris avalanches that could inundate large areas of the Pacific coastal plain. In areas around the volcanoes and downslope toward the coastal plain, more than 100,000 people are potentially at risk from these and other flowage phenomena.

  7. New volcanoes discovered in southeast Australia

    Science.gov (United States)

    Wendel, JoAnna

    2014-07-01

    Scientists have discovered three new active volcanoes in the Newer Volcanics Province (NVP) in southeast Australia. Researchers from Monash University in Melbourne describe in the Australian Journal of Earth Sciences how they used a combination of satellite photographs, detailed topography models from NASA, the distribution of magnetic minerals in the rocks, and site visits to analyze the region.

  8. Carbonate assimilation at Merapi volcano, Java Indonesia

    DEFF Research Database (Denmark)

    Chadwick, J.P; Troll, V.R; Ginibre,, C.

    2007-01-01

    Recent basaltic andesite lavas from Merapi volcano contain abundant, complexly zoned, plagioclase phenocrysts, analysed here for their petrographic textures, major element composition and Sr isotope composition. Anorthite (An) content in individual crystals can vary by as much as 55 mol% (An40^95...

  9. Degassing and differentiation in subglacial volcanoes, Iceland

    Science.gov (United States)

    Moore, J.G.; Calk, L.C.

    1991-01-01

    Within the neovolcanic zones of Iceland many volcanoes grew upward through icecaps that have subsequently melted. These steep-walled and flat-topped basaltic subglacial volcanoes, called tuyas, are composed of a lower sequence of subaqueously erupted, pillowed lavas overlain by breccias and hyaloclastites produced by phreatomagmatic explosions in shallow water, capped by a subaerially erupted lava plateau. Glass and whole-rock analyses of samples collected from six tuyas indicate systematic variations in major elements showing that the individual volcanoes are monogenetic, and that commonly the tholeiitic magmas differentiated and became more evolved through the course of the eruption that built the tuya. At Herdubreid, the most extensively studies tuya, the upward change in composition indicates that more than 50 wt.% of the first erupted lavas need crystallize over a range of 60??C to produce the last erupted lavas. The S content of glass commonly decreases upward in the tuyas from an average of about 0.08 wt.% at the base to crystallization that generates the more evolved, lower-temperature melts during the growth of the tuyas, apparently results from cooling and degassing of magma contained in shallow magma chambers and feeders beneath the volcanoes. Cooling may result from percolation of meltwater down cracks, vaporization, and cycling in a hydrothermal circulation. Degassing occurs when progressively lower pressure eruption (as the volcanic vent grows above the ice/water surface) lowers the volatile vapour pressure of subsurface melt, thus elevating the temperature of the liquidus and hastening liquid-crystal differentiation. ?? 1991.

  10. Environmental assessment : Rodent control program : San Joaquin river levee : San Luis National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The Lower San Joaquin Levee District (LSJLD) requires that six miles of levee situated along the San Joaquin River on San Luis National Wildlife Refuge (SLNWR) be...

  11. La Administración pública de Vicente Fox: del Modelo Estratégico de Innovación Gubernamental a la Agenda de Buen Gobierno

    Directory of Open Access Journals (Sweden)

    José Juan Sánchez González

    2009-01-01

    Full Text Available Este artículo pretende explicar las tres estrategias de mejoramiento de la Administración pública de Vicente Fox. Se encuentra estructurado en cuatro apartados: en primer lugar, se presenta una propuesta para ubicar históricamente las acciones de reforma y modernización realizadas por otras administraciones antes del gobierno de Fox; en segundo lugar, se analiza el contenido y alcances del Programa Nacional de Combate a la Corrupción y Fomento a la Transparencia y el Desarrollo Administrativo (2001-2006; en tercer lugar, se revisa el Modelo Estratégico de Innovación Gubernamental con sus objetivos, estrategias y etapas; en cuarto lugar, describimos los seis atributos de la Agenda Presidencial de Buen Gobierno de Vicente Fox y pretendemos analizar sus alcances y limitaciones en el funcionamiento de la administración pública federal (APF.

  12. Residencia San Pedro, California

    Directory of Open Access Journals (Sweden)

    Neutra, Richard J.

    1961-01-01

    Full Text Available Esta vivienda representa una aproximación más hacia la típica casa grande española, con techos de teca de 7 cm, que los señores Rados han edificado y en la que albergan a su gran familia de hijos, los cuales tienen ya sus propios vástagos. Ambos, el señor y la señora Rados, descienden de familias navieras italianas de Trieste, y el propio señor Rados tiene una compañía constructora de barcos en el puerto de San Pedro, que puede verse desde su propia casa. Los dos son verdaderamente unos abuelos muy sociables, cariñosos y atentos. Por añadidura, la señora Rados se entretiene frecuentemente y le agrada el cuidado de la casa. Por ello ha sido proyectada para facilitar sensiblemente toda esta serie de actividades.

  13. Hazard maps of Colima volcano, Mexico

    Science.gov (United States)

    Suarez-Plascencia, C.; Nunez-Cornu, F. J.; Escudero Ayala, C. R.

    2011-12-01

    Colima volcano, also known as Volcan de Fuego (19° 30.696 N, 103° 37.026 W), is located on the border between the states of Jalisco and Colima and is the most active volcano in Mexico. Began its current eruptive process in February 1991, in February 10, 1999 the biggest explosion since 1913 occurred at the summit dome. The activity during the 2001-2005 period was the most intense, but did not exceed VEI 3. The activity resulted in the formation of domes and their destruction after explosive events. The explosions originated eruptive columns, reaching attitudes between 4,500 and 9,000 m.a.s.l., further pyroclastic flows reaching distances up to 3.5 km from the crater. During the explosive events ash emissions were generated in all directions reaching distances up to 100 km, slightly affected nearby villages as Tuxpan, Tonila, Zapotlán, Cuauhtemoc, Comala, Zapotitlan de Vadillo and Toliman. During the 2005 this volcano has had an intense effusive-explosive activity, similar to the one that took place during the period of 1890 through 1900. Intense pre-plinian eruption in January 20, 1913, generated little economic losses in the lower parts of the volcano due to low population density and low socio-economic activities at the time. Shows the updating of the volcanic hazard maps published in 2001, where we identify whit SPOT satellite imagery and Google Earth, change in the land use on the slope of volcano, the expansion of the agricultural frontier on the east and southeast sides of the Colima volcano, the population inhabiting the area is approximately 517,000 people, and growing at an annual rate of 4.77%, also the region that has shown an increased in the vulnerability for the development of economic activities, supported by the construction of highways, natural gas pipelines and electrical infrastructure that connect to the Port of Manzanillo to Guadalajara city. The update the hazard maps are: a) Exclusion areas and moderate hazard for explosive events

  14. Estilos de Apego y adicción al Facebook en estudiantes de segundo año de bachillerato de la unidad educativa “Pedro Vicente Maldonado” Riobamba, periodo Diciembre 2015-Mayo 2016.

    OpenAIRE

    Muñoz Inguillay, Silvia Alexandra; Silva Valdivieso, Carolina Belén

    2016-01-01

    This research work analyzes the styles of attachment and addiction to Facebook in the students of second year of Bachelor at "Pedro Vicente Maldonado" high school Riobamba, period December 2015 - May 2016, the objective was to analyze the styles of attachment and addiction to Facebook. The sample were 162 students that was obtained by criteria of inclusion and exclusion. The instrument that is used to identify those styles of attachment is the attachment´s questionnaire CaMir-R that evaluates...

  15. De Castellón a Roma: el canónigo Vicente Giner (Ca. 1636-1681

    Directory of Open Access Journals (Sweden)

    Aterido Fernández, Ángel

    2001-06-01

    Full Text Available La presencia de un artista español en la Roma papal, se contempla siempre como un privilegio de disfrute infrecuente, en los siglos del Renacimiento y el Barroco. No es hasta el pleno siglo XVIII, con la institucionalización de los pensionados de San Fernando, cuando la constancia documental de los españoles en las academias romanas parece hacerla más habitual. Limitadísimas son las noticias que disponemos de ellos, casi siempre procedentes de crónicas y raramente de documentos exhumados de los archivos romanos, lo que explica que la andadura italiana se haya tenido como excepcional. Ante la penuria de datos, parece arriesgado aventurar una «solución» concluyente sobre el tema de los españoles en Roma.…

  16. A marinha destronada: ou a famigerada São Vicente derrotada pela Rochela paulista. A afirmação de São Paulo como cabeça de capitania (1681-1766

    Directory of Open Access Journals (Sweden)

    Amilcar Torrão Filho

    2011-06-01

    Full Text Available A vila de São Vicente, primeira criada na América portuguesa, foi sede da capitania de mesmo nome e, apesar de muito "famigerada noutro tempo", como diz Frei Gaspar da Madre de Deus, acaba, no século XVIII, "tão desconhecida que nem o nome primitivo conserva para memória de sua antiga existência". A primeira tentativa de mudança ocorreu em 1681, por obra do marquês de Cascais, donatário da capitania, que contou com a resistência da câmara de São Vicente. Após a restauração da capitania em 1765 o Morgado de Mateus, novo governador da capitania restaurada, transfere definitivamente o governo, a Sé, a junta de fazenda, a guarnição e a provedoria para São Paulo. A Marinha perde definitivamente o governo para o Sertão de serra acima. O objetivo deste artigo é compreender como a cidade de São Paulo adquiriu sua dominância em relação às demais vilas, chegando a renomear a própria capitania, colocando no esquecimento a anteriormente famigerada São Vicente.

  17. Space Radar Image of Colombian Volcano

    Science.gov (United States)

    1999-01-01

    This is a radar image of a little known volcano in northern Colombia. The image was acquired on orbit 80 of space shuttle Endeavour on April 14, 1994, by the Spaceborne Imaging Radar C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR). The volcano near the center of the image is located at 5.6 degrees north latitude, 75.0 degrees west longitude, about 100 kilometers (65 miles) southeast of Medellin, Colombia. The conspicuous dark spot is a lake at the bottom of an approximately 3-kilometer-wide (1.9-mile) volcanic collapse depression or caldera. A cone-shaped peak on the bottom left (northeast rim) of the caldera appears to have been the source for a flow of material into the caldera. This is the northern-most known volcano in South America and because of its youthful appearance, should be considered dormant rather than extinct. The volcano's existence confirms a fracture zone proposed in 1985 as the northern boundary of volcanism in the Andes. The SIR-C/X-SAR image reveals another, older caldera further south in Colombia, along another proposed fracture zone. Although relatively conspicuous, these volcanoes have escaped widespread recognition because of frequent cloud cover that hinders remote sensing imaging in visible wavelengths. Four separate volcanoes in the Northern Andes nations ofColombia and Ecuador have been active during the last 10 years, killing more than 25,000 people, including scientists who were monitoring the volcanic activity. Detection and monitoring of volcanoes from space provides a safe way to investigate volcanism. The recognition of previously unknown volcanoes is important for hazard evaluations because a number of major eruptions this century have occurred at mountains that were not previously recognized as volcanoes. Spaceborne Imaging Radar-C and X-band Synthetic Aperture Radar (SIR-C/X-SAR) is part of NASA's Mission to Planet Earth. The radars illuminate Earth with microwaves allowing detailed observations at any time, regardless of

  18. Common processes at unique volcanoes – a volcanological conundrum

    Directory of Open Access Journals (Sweden)

    Katharine eCashman

    2014-11-01

    Full Text Available An emerging challenge in modern volcanology is the apparent contradiction between the perception that every volcano is unique, and classification systems based on commonalities among volcano morphology and eruptive style. On the one hand, detailed studies of individual volcanoes show that a single volcano often exhibits similar patterns of behaviour over multiple eruptive episodes; this observation has led to the idea that each volcano has its own distinctive pattern of behaviour (or personality. In contrast, volcano classification schemes define eruption styles referenced to type volcanoes (e.g. Plinian, Strombolian, Vulcanian; this approach implicitly assumes that common processes underpin volcanic activity and can be used to predict the nature, extent and ensuing hazards of individual volcanoes. Actual volcanic eruptions, however, often include multiple styles, and type volcanoes may experience atypical eruptions (e.g., violent explosive eruptions of Kilauea, Hawaii1. The volcanological community is thus left with a fundamental conundrum that pits the uniqueness of individual volcanic systems against generalization of common processes. Addressing this challenge represents a major challenge to volcano research.

  19. International Collaboration on Building Local Technical Capacities for Monitoring Volcanic Activity at Pacaya Volcano, Guatemala.

    Science.gov (United States)

    Escobar-Wolf, R. P.; Chigna, G.; Morales, H.; Waite, G. P.; Oommen, T.; Lechner, H. N.

    2015-12-01

    Pacaya volcano is a frequently active and potentially dangerous volcano situated in the Guatemalan volcanic arc. It is also a National Park and a major touristic attraction, constituting an important economic resource for local municipality and the nearby communities. Recent eruptions have caused fatalities and extensive damage to nearby communities, highlighting the need for risk management and loss reduction from the volcanic activity. Volcanic monitoring at Pacaya is done by the Instituto Nacional de Sismologia, Vulcanologia, Meteorologia e Hidrologia (INSIVUMEH), instrumentally through one short period seismic station, and visually by the Parque Nacional Volcan de Pacaya y Laguna de Calderas (PNVPLC) personnel. We carry out a project to increase the local technical capacities for monitoring volcanic activity at Pacaya. Funding for the project comes from the Society of Exploration Geophysicists through the Geoscientists Without Borders program. Three seismic and continuous GPS stations will be installed at locations within 5 km from the main vent at Pacaya, and one webcam will aid in the visual monitoring tasks. Local educational and outreach components of the project include technical workshops on data monitoring use, and short thesis projects with the San Carlos University in Guatemala. A small permanent exhibit at the PNVPLC museum or visitor center, focusing on the volcano's history, hazards and resources, will also be established as part of the project. The strategy to involve a diverse group of local collaborators in Guatemala aims to increase the chances for long term sustainability of the project, and relies not only on transferring technology but also the "know-how" to make that technology useful. Although not a primary research project, it builds on a relationship of years of joint research projects at Pacaya between the participants, and could be a model of how to increase the broader impacts of such long term collaboration partnerships.

  20. Ceboruco Volcano Seismicity Study using a 3D Single Digital Station

    Science.gov (United States)

    Rodriguez-Uribe, M. C.; Nunez-Cornu, F. J.; Nava Pichardo, F. A.; Suarez-Plascencia, C.; Escudero Ayala, C. R.

    2011-12-01

    The Ceboruco stratovolcano (2,280 m.a.s.l.) is located in Nayarit, Mexico, at the west of the Mexican volcanic belt and towards the Sierra de San Pedro southeast. It last eruptive activity was in 1875, and during the following five years it presents superficial activity such as vapor emissions, ash falls and riodacític composition lava flows along the southeast side. We use data recorded from March 2003 to July 2008 at the CEBN triaxial short period digital station located at the southwest side of the volcano. Our final data set consist of 139 volcanic earthquakes. We classified them according waveform characteristics of the east-west horizontal component. We obtained four groups: impulsive arrivals, extended coda, bobbin form, and wave package amplitude modulation earthquakes. The extended coda is the group with more earthquakes and present durations of 50 seconds. Using the moving particle technique, we read the P and S wave arrival times and estimate azimuth arrivals. A P-wave velocity of 3.0 km/s was used to locate the earthquakes, the hypocenters are below the volcanic building within a circular perimeter of 5 km of radius and its depths are calculated relative to the CEBN elevation as follows. The impulsive arrivals earthquakes present hypocenters between 0 and 1 km while the other groups between 0 and 4 km. The epicenters show similar directions as the tectonic structures of the area (Tepic-Zacoalco Graben and regional faults). Results suggest fluid activity inside the volcanic building that could be related to fumes on the volcano. We conclude that the Ceboruco volcano is active. Therefore, it should be continuously monitored due to the risk that represent to the surrounding communities and economic activities.

  1. Darwin's triggering mechanism of volcano eruptions

    Science.gov (United States)

    Galiev, Shamil

    2010-05-01

    Charles Darwin wrote that ‘… the elevation of many hundred square miles of territory near Concepcion is part of the same phenomenon, with that splashing up, if I may so call it, of volcanic matter through the orifices in the Cordillera at the moment of the shock;…' and ‘…a power, I may remark, which acts in paroxysmal upheavals like that of Concepcion, and in great volcanic eruptions,…'. Darwin reports that ‘…several of the great chimneys in the Cordillera of central Chile commenced a fresh period of activity ….' In particular, Darwin reported on four-simultaneous large eruptions from the following volcanoes: Robinson Crusoe, Minchinmavida, Cerro Yanteles and Peteroa (we cite the Darwin's sentences following his The Voyage of the Beagle and researchspace. auckland. ac. nz/handle/2292/4474). Let us consider these eruptions taking into account the volcano shape and the conduit. Three of the volcanoes (Minchinmavida (2404 m), Cerro Yanteles (2050 m), and Peteroa (3603 m)) are stratovolcanos and are formed of symmetrical cones with steep sides. Robinson Crusoe (922 m) is a shield volcano and is formed of a cone with gently sloping sides. They are not very active. We may surmise, that their vents had a sealing plug (vent fill) in 1835. All these volcanoes are conical. These common features are important for Darwin's triggering model, which is discussed below. The vent fill material, usually, has high level of porosity and a very low tensile strength and can easily be fragmented by tension waves. The action of a severe earthquake on the volcano base may be compared with a nuclear blast explosion of the base. It is known, that after a underground nuclear explosion the vertical motion and the surface fractures in a tope of mountains were observed. The same is related to the propagation of waves in conical elements. After the explosive load of the base. the tip may break and fly off at high velocity. Analogous phenomenon may be generated as a result of a

  2. A Benthic Invertebrate Survey of Jun Jaegyu Volcano: An active undersea volcano in Antarctic Sound, Antarctica

    Science.gov (United States)

    Quinones, G.; Brachfeld, S.; Gorring, M.; Prezant, R. S.; Domack, E.

    2005-12-01

    Jun Jaegyu volcano, an Antarctic submarine volcano, was dredged in May 2004 during cruise 04-04 of the RV Laurence M. Gould to determine rock, sediment composition and marine macroinvertebrate diversity. The objectives of this study are to examine the benthic assemblages and biodiversity present on a young volcano. The volcano is located on the continental shelf of the northeastern Antarctic Peninsula, where recent changes in surface temperature and ice shelf stability have been observed. This volcano was originally swath-mapped during cruise 01-07 of the Research Vessel-Ice Breaker Nathaniel B. Palmer. During LMG04-04 we also studied the volcano using a SCUD video camera, and performed temperature surveys along the flanks and crest. Both the video and the dredge indicate a seafloor surface heavily colonized by benthic organisms. Indications of fairly recent lava flows are given by the absence of marine life on regions of the volcano. The recovered dredge material was sieved, and a total of thirty-three invertebrates were extracted. The compilation of invertebrate community data can subsequently be compared to other benthic invertebrate studies conducted along the peninsula, which can determine the regional similarity of communities over time, their relationship to environmental change and health, if any, and their relationship to geologic processes in Antarctic Sound. Twenty-two rock samples, all slightly weathered and half bearing encrusted organisms, were also analyzed using inductively coupled plasma-optical emission spectrometry (ICP-OES). Except for one conglomerate sample, all are alkali basalts and share similar elemental compositions with fresh, unweathered samples from the volcano. Two of the encrusted basalt samples have significantly different compositions than the rest. We speculate this difference could be due to water loss during sample preparation, loss of organic carbon trapped within the vesicles of the samples and/or elemental uptake by the

  3. Gender differences and regionalization of the cultural significance of wild mushrooms around La Malinche volcano, Tlaxcala, Mexico.

    Science.gov (United States)

    Montoya, A; Torres-García, E A; Kong, A; Estrada-Torres, A; Caballero, J

    2012-01-01

    The purpose of this study was to determine the cultural significance of wild mushrooms in 10 communities on the slopes of La Malinche volcano, Tlaxcala. The frequency and order of mention of each mushroom species in interviews of 200 individuals were used as indicators of the relative cultural significance of each species. A X(2) analysis was used to compare the frequency of mention of each species between males and females, and a Mann-Whitney U test was used to compare the difference in the total number of fungi mentioned by either gender. Traditional names for mushroom species were documented and frequency of mention assessed through multivariate statistics. The fungi with highest frequency of mention were Amanita basii, Lyophyllum decastes, Boletus pinophilus, Gomphus floccosus and Cantharellus cibarius complex. We found significant differences in the frequency of mention of different fungi by males and females but no significant difference was found for the total number of fungi mentioned by either gender. Principal component analysis suggested a cultural regionalization of La Malinche volcano communities based on preferences for consumption and use of traditional names. We observed two groups: one formed by communities on the eastern part of the volcano (with mixed cultures) and the other including communities on the western slope (ethnic Nahua towns). San Isidro Buensuceso is the most distinct community, according to the criteria in this study.

  4. Aspectos da reprodução e dinâmica populacional de Chione pubera (Bory Saint-Vicent (Bivalvia, Veneridae no sul do Brasil General features of the reproduction and population dynamics of Chione pubera (Bory Saint-Vicent (Bivalvia, Veneridae in South Brazil

    Directory of Open Access Journals (Sweden)

    Carlos Alberto Borzone

    2001-06-01

    Full Text Available Material collected with a 2-meter wide beam trawl during eight surveys conducted from December 1995 to February 1997 was used for a first preliminary description of the reproduction and population dynamics of the edible venerid bivalve Chione pubera (Bory Saint-Vicent, 1827. Greatest catches were found between 30 to 35 meters depth, on fine sandy bottoms with a mud content lower than 10%. Dry weight meat condition index showed highest values during autumn and lowest values from winter to summer months. Histological analysis of gonadal tissue showed a continuous reproduction, with peaks of maturation on autumn and spring, Spawning was related with the increase of water temperature, that occurs twice a year in the region as a consequence of a particular hydrological characteristic of the inner continental shelf. Size frequency distribution showed a unique principal mode with slow if any displacement through time, indicating a long lived species.

  5. Voluminous submarine lava flows from Hawaiian volcanoes

    Energy Technology Data Exchange (ETDEWEB)

    Holcomb, R.T.; Moore, J.G.; Lipman, P.W.; Belderson, R.H.

    1988-05-01

    The GLORIA long-range sonar imaging system has revealed fields of large lava flows in the Hawaiian Trough east and south of Hawaii in water as deep as 5.5 km. Flows in the most extensive field (110 km long) have erupted from the deep submarine segment of Kilauea's east rift zone. Other flows have been erupted from Loihi and Mauna Loa. This discovery confirms a suspicion, long held from subaerial studies, that voluminous submarine flows are erupted from Hawaiian volcanoes, and it supports an inference that summit calderas repeatedly collapse and fill at intervals of centuries to millenia owing to voluminous eruptions. These extensive flows differ greatly in form from pillow lavas found previously along shallower segments of the rift zones; therefore, revision of concepts of volcano stratigraphy and structure may be required.

  6. Vulcan's fury: Man against the volcano

    Science.gov (United States)

    Varekamp, Johan C.

    I read this book on an 11-hour flight back from a field trip in the Andes, where I got first-hand insight into how people live with a volcano that now and then explodes. Appropriate reading, I felt, especially as the fascination of the human world with volcanoes and eruptive disasters is indeed long standing. This book is a recent addition to a list of titles in this genre (e.g., the new book by Sigurdsson to be reviewed in Eos shortly). The scope of the book is summarized in the introductory sentence of the preface: “This book is about an unequal contest. It describes human reactions to volcanic eruptions.” This is the perspective of the book's descriptions of 16 large and not-so-large eruptions over the last two millennia.

  7. Vegetation - San Felipe Valley [ds172

    Data.gov (United States)

    California Department of Resources — This Vegetation Map of the San Felipe Valley Wildlife Area in San Diego County, California is based on vegetation samples collected in the field in 2002 and 2005 and...

  8. Decision Analysis Tools for Volcano Observatories

    Science.gov (United States)

    Hincks, T. H.; Aspinall, W.; Woo, G.

    2005-12-01

    Staff at volcano observatories are predominantly engaged in scientific activities related to volcano monitoring and instrumentation, data acquisition and analysis. Accordingly, the academic education and professional training of observatory staff tend to focus on these scientific functions. From time to time, however, staff may be called upon to provide decision support to government officials responsible for civil protection. Recognizing that Earth scientists may have limited technical familiarity with formal decision analysis methods, specialist software tools that assist decision support in a crisis should be welcome. A review is given of two software tools that have been under development recently. The first is for probabilistic risk assessment of human and economic loss from volcanic eruptions, and is of practical use in short and medium-term risk-informed planning of exclusion zones, post-disaster response, etc. A multiple branch event-tree architecture for the software, together with a formalism for ascribing probabilities to branches, have been developed within the context of the European Community EXPLORIS project. The second software tool utilizes the principles of the Bayesian Belief Network (BBN) for evidence-based assessment of volcanic state and probabilistic threat evaluation. This is of practical application in short-term volcano hazard forecasting and real-time crisis management, including the difficult challenge of deciding when an eruption is over. An open-source BBN library is the software foundation for this tool, which is capable of combining synoptically different strands of observational data from diverse monitoring sources. A conceptual vision is presented of the practical deployment of these decision analysis tools in a future volcano observatory environment. Summary retrospective analyses are given of previous volcanic crises to illustrate the hazard and risk insights gained from use of these tools.

  9. On the morphometry of terrestrial shield volcanoes

    Science.gov (United States)

    Grosse, Pablo; Kervyn, Matthieu

    2016-04-01

    Shield volcanoes are described as low angle edifices that have convex up topographic profiles and are built primarily by the accumulation of lava flows. This generic view of shields' morphology is based on a limited number of monogenetic shields from Iceland and Mexico, and a small set of large oceanic islands (Hawaii, Galapagos). Here, the morphometry of over 150 monogenetic and polygenetic shield volcanoes, identified inthe Global Volcanism Network database, are analysed quantitatively from 90-meter resolution DEMs using the MORVOLC algorithm. An additional set of 20 volcanoes identified as stratovolcanoes but having low slopes and being dominantly built up by accumulation of lava flows are documented for comparison. Results show that there is a large variation in shield size (volumes range from 0.1 to >1000 km3), profile shape (height/basal width ratios range from 0.01 to 0.1), flank slope gradients, elongation and summit truncation. Correlation and principal component analysis of the obtained quantitative database enables to identify 4 key morphometric descriptors: size, steepness, plan shape and truncation. Using these descriptors through clustering analysis, a new classification scheme is proposed. It highlights the control of the magma feeding system - either central, along a linear structure, or spatially diffuse - on the resulting shield volcano morphology. Genetic relationships and evolutionary trends between contrasted morphological end-members can be highlighted within this new scheme. Additional findings are that the Galapagos-type morphology with a central deep caldera and steep upper flanks are characteristic of other shields. A series of large oceanic shields have slopes systematically much steeper than the low gradients (<4-8°) generally attributed to large Hawaiian-type shields. Finally, the continuum of morphologies from flat shields to steeper complex volcanic constructs considered as stratovolcanoes calls for a revision of this oversimplified

  10. Buried caldera of mauna kea volcano, hawaii.

    Science.gov (United States)

    Porter, S C

    1972-03-31

    An elliptical caldera (2.1 by 2.8 kilometers) at the summit of Mauna Kea volcano is inferred to lie buried beneath hawaiite lava flows and pyroclastic cones at an altitude of approximately 3850 meters. Stratigraphic relationships indicate that hawaiite eruptions began before a pre-Wisconsin period of ice-cap glaciation and that the crest of the mountain attained its present altitude and gross form during a glaciation of probable Early Wisconsin age.

  11. Publications of the Volcano Hazards Program 2014

    Science.gov (United States)

    Nathenson, Manuel

    2016-04-08

    The Volcano Hazards Program of the U.S. Geological Survey (USGS) is part of the Natural Hazards activity, as funded by Congressional appropriation. Investigations are carried out by the USGS and with cooperators at the Alaska Division of Geological and Geophysical Surveys, University of Alaska Fairbanks Geophysical Institute, University of Hawaiʻi Mānoa and Hilo, University of Utah, and University of Washington Geophysics Program. This report lists publications from all of these institutions.

  12. Petrology and geochemistry of the San Félix-San Ambrosio islands, Eastern Pacific

    Science.gov (United States)

    Cooper Percker, Oliver; Lara, Luis E.

    2015-04-01

    The San Félix-San Ambrosio (SF-SA) islands, Eastern Pacific, are fragments of two volcanic sequences 20 km apart. Both represent the top of an eroded large shield-volcano which rises over the Nazca Plate. Here, new geochemical and 40Ar/39Ar geochronological data are presented in order to understand magmatic evolution and source features. Two units are recognized on the SF island: (1) the Cerro Amarillo unit (CAU) (190±30 ka) formed by a hyaloclastic-tuff cone and basanitic lavas (Ba/Yb=519; Ba/Zr=2.19; La/Yb=49.88; Nb/Ta=17.96; Nb/Y=3.78; Nb/Zr=0.25) with absent or scarce modal content of plagioclase (20%). The hyaloclastic-tuff cone of the CAU contains aphanitic-trachytic lithic fragments of Na-augite and kaersutite, which correspond to the final product of fractional crystallization of olivine+clinopyroxene+Fe-Ti oxides+apatite±plagioclase from alkaline primitive liquids similar to SF-SA lavas. The geochemical data suggest that the islands represent different evolutive stages of a same volcanic intraplate complex. The alkaline to transitional SA lavas (Ba/Yb=249; Ba/Zr=1.60; La/Yb=24.62; Nb/Ta=16.55; Nb/Y=2.22; Nb/Zr=0.19) would represent the shield stage (ca 2.9 Ma), while the basanitic SF lavas the post-erosional stage (ca 0.2 Ma). Considering the Sr-Nd-Pb isotopic data of the SF-SA lavas, previous works have ruled out a genetic relationship between SF-SA islands and the nearby Nazca Ridge. An heterogeneous mantle plume with mantelic metasomatized recycled lithologies is hypothesized as a possible magmatic source capable of explaining the petrologic differences between the SF-SA islands and between the CAU and PU, in SF island. This research is supported by FONDECYT Project 1141303.

  13. 75 FR 39166 - Safety Zone; San Francisco Giants Baseball Game Promotion, San Francisco, CA

    Science.gov (United States)

    2010-07-08

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Francisco Giants Baseball Game... Bay off San Francisco, CA in support of the San Francisco Giants Baseball Game Promotion. This safety... Giants will sponsor the San Francisco Giants Baseball Game Promotion on July 16, 2010, on the...

  14. 78 FR 21403 - Notice of Inventory Completion: San Francisco State University NAGPRA Program, San Francisco, CA

    Science.gov (United States)

    2013-04-10

    ... NAGPRA Program, c/o Department of Anthropology, San Francisco State University, 1600 Holloway Avenue, San...: Pursuant to 25 U.S.C. 3001(9), the human remains described in this notice represent the physical remains of... NAGPRA Program, c/o Department of Anthropology, San Francisco State University, 1600 Holloway Avenue, San...

  15. 76 FR 55796 - Safety Zone; TriRock Triathlon, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2011-09-09

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; TriRock Triathlon, San Diego Bay, San Diego.... Basis and Purpose Competitor Group is sponsoring the TriRock Triathlon, consisting of 2000 swimmers....T11-431 Safety Zone; TriRock Triathlon, San Diego Bay, San Diego, CA. (a) Location. The limits of...

  16. 76 FR 45693 - Safety Zone; San Diego POPS Fireworks, San Diego, CA

    Science.gov (United States)

    2011-08-01

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego POPS Fireworks, San Diego, CA... temporary safety zone on the navigable waters of San Diego Bay in support of the San Diego POPS Fireworks... Diego, CA; telephone (619) 278- 7262, e-mail Shane.E.Jakcson@uscg.mil . If you have questions on viewing...

  17. 78 FR 38584 - Safety Zone; San Diego Symphony Summer POPS Fireworks 2013 Season, San Diego, CA

    Science.gov (United States)

    2013-06-27

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Symphony Summer POPS Fireworks 2013 Season, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone on the navigable waters of San Diego Bay in support of the San Diego...

  18. 76 FR 75908 - Notice of Inventory Completion: The University of California, San Diego, San Diego, CA

    Science.gov (United States)

    2011-12-05

    ... National Park Service Notice of Inventory Completion: The University of California, San Diego, San Diego... California on behalf of the University of California, San Diego, have completed an inventory of human remains... contact the University of California, San Diego. Disposition of the human remains and associated funerary...

  19. 77 FR 42647 - Safety Zone: San Diego Symphony POPS Fireworks; San Diego, CA

    Science.gov (United States)

    2012-07-20

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone: San Diego Symphony POPS Fireworks; San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone on the navigable waters of San Diego Bay in support of the San Diego Symphony POPS...

  20. 75 FR 77756 - Safety Zone; San Diego Parade of Lights Fireworks, San Diego, CA

    Science.gov (United States)

    2010-12-14

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; San Diego Parade of Lights Fireworks, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone upon the navigable water of the San Diego Bay in San Diego, CA in support of the two...

  1. The San Bernabe power substation; La subestacion San Bernabe

    Energy Technology Data Exchange (ETDEWEB)

    Chavez Sanudo, Andres D. [Luz y Fuerza del Centro, Mexico, D. F. (Mexico)

    1997-12-31

    The first planning studies that gave rise to the San Bernabe substation go back to year 1985. The main circumstance that supports this decision is the gradual restriction for electric power generation that has been suffering the Miguel Aleman Hydro System, until its complete disappearance, to give priority to the potable water supply through the Cutzamala pumping system, that feeds in an important way Mexico City and the State of Mexico. In this document the author describes the construction project of the San Bernabe Substation; mention is made of the technological experiences obtained during the construction and its geographical location is shown, as well as the one line diagram of the same [Espanol] Los primeros estudios de planeacion que dieron origen a la subestacion San Bernabe se remontan al ano de 1985. La circunstancia principal que soporta esta decision es la restriccion paulatina para generar energia que ha venido experimentando el Sistema Hidroelectrico Miguel Aleman, hasta su desaparicion total, para dar prioridad al suministro de agua potable por medio del sistema de bombeo Cutzamala, que alimenta en forma importante a la Ciudad de Mexico y al Estado de Mexico. En este documento el autor describe el proyecto de construccion de la subestacion San Bernabe; se mencionan las experiencias tecnologicas obtenidas durante su construccion y se ilustra su ubicacion geografica, asi como un diagrama unifilar de la misma

  2. Monitoring active volcanoes: The geochemical approach

    Directory of Open Access Journals (Sweden)

    Takeshi Ohba

    2011-06-01

    Full Text Available

    The geochemical surveillance of an active volcano aims to recognize possible signals that are related to changes in volcanic activity. Indeed, as a consequence of the magma rising inside the volcanic "plumbing system" and/or the refilling with new batches of magma, the dissolved volatiles in the magma are progressively released as a function of their relative solubilities. When approaching the surface, these fluids that are discharged during magma degassing can interact with shallow aquifers and/or can be released along the main volcano-tectonic structures. Under these conditions, the following main degassing processes represent strategic sites to be monitored.

    The main purpose of this special volume is to collect papers that cover a wide range of topics in volcanic fluid geochemistry, which include geochemical characterization and geochemical monitoring of active volcanoes using different techniques and at different sites. Moreover, part of this volume has been dedicated to the new geochemistry tools.

  3. Geothermal Exploration of Newberry Volcano, Oregon

    Energy Technology Data Exchange (ETDEWEB)

    Waibel, Albert F. [Columbia Geoscience, Pasco, WA (United States); Frone, Zachary S. [Southern Methodist Univ., Dallas, TX (United States); Blackwell, David D. [Southern Methodist Univ., Dallas, TX (United States)

    2014-12-01

    Davenport Newberry (Davenport) has completed 8 years of exploration for geothermal energy on Newberry Volcano in central Oregon. Two deep exploration test wells were drilled by Davenport on the west flank of the volcano, one intersected a hydrothermal system; the other intersected isolated fractures with no hydrothermal interconnection. Both holes have bottom-hole temperatures near or above 315°C (600°F). Subsequent to deep test drilling an expanded exploration and evaluation program was initiated. These efforts have included reprocessing existing data, executing multiple geological, geophysical, geochemical programs, deep exploration test well drilling and shallow well drilling. The efforts over the last three years have been made possible through a DOE Innovative Exploration Technology (IET) Grant 109, designed to facilitate innovative geothermal exploration techniques. The combined results of the last 8 years have led to a better understanding of the history and complexity of Newberry Volcano and improved the design and interpretation of geophysical exploration techniques with regard to blind geothermal resources in volcanic terrain.

  4. Seismic and infrasound monitoring at Cotopaxi volcano

    Science.gov (United States)

    Ruiz, M.; Yepes, H.; Palacios, P.; Troncoso, L.; Mothes, P.; Kumagai, H.

    2012-04-01

    Cotopaxi is an active ice-capped volcano (5967m) located 60 km SE from Quito and is one of the largest and more hazardous volcanoes in the Northern Andes. Monitoring of Cotopaxi, using seismic and infrasound techniques has improving significantly since 1976, when three short-period stations were deployed temporarily in response to an increase of fumarolic activity. Later in May 1977, a short-period vertical seismometer was installed on the NW flank at 7 km from the crater. Since 1986 a short-period seismic station is working at the northern flank of Cotopaxi and transmitting analog data to the Instituto Geofisico. In 1993 a network of 4 short-period seismic stations were installed on all flanks of the volcano. Between March 1996 and June 1997 a temporal network of 16 stations were deployed for several months in order to study local seismicity and internal structure (Metaxian et al., 1999). Since 2006, a network of five broad band stations (0.02-60 s) and low-frequency infrasound sensors (0.01-10 s) were installed through a JICA Cooperation Project (Kumagai et al., 2007). Data is transmitted to the Instituto Geofisico via a digital radio system. Through this network, LP and VLP events have been recorded and analyzed (Molina et al., 2008). VLP events were located beneath the north and north-eastern flank using waveform inversion and amplitude distribution methods (Kumagai et al., 2010).

  5. Detecting Blackholes and Volcanoes in Directed Networks

    CERN Document Server

    Li, Zhongmou; Liu, Yanchi

    2010-01-01

    In this paper, we formulate a novel problem for finding blackhole and volcano patterns in a large directed graph. Specifically, a blackhole pattern is a group which is made of a set of nodes in a way such that there are only inlinks to this group from the rest nodes in the graph. In contrast, a volcano pattern is a group which only has outlinks to the rest nodes in the graph. Both patterns can be observed in real world. For instance, in a trading network, a blackhole pattern may represent a group of traders who are manipulating the market. In the paper, we first prove that the blackhole mining problem is a dual problem of finding volcanoes. Therefore, we focus on finding the blackhole patterns. Along this line, we design two pruning schemes to guide the blackhole finding process. In the first pruning scheme, we strategically prune the search space based on a set of pattern-size-independent pruning rules and develop an iBlackhole algorithm. The second pruning scheme follows a divide-and-conquer strategy to fur...

  6. Nanoscale volcanoes: accretion of matter at ion-sculpted nanopores.

    Science.gov (United States)

    Mitsui, Toshiyuki; Stein, Derek; Kim, Young-Rok; Hoogerheide, David; Golovchenko, J A

    2006-01-27

    We demonstrate the formation of nanoscale volcano-like structures induced by ion-beam irradiation of nanoscale pores in freestanding silicon nitride membranes. Accreted matter is delivered to the volcanoes from micrometer distances along the surface. Volcano formation accompanies nanopore shrinking and depends on geometrical factors and the presence of a conducting layer on the membrane's back surface. We argue that surface electric fields play an important role in accounting for the experimental observations.

  7. Citizen empowerment in volcano monitoring, communication and decision-making at Tungurahua volcano, Ecuador

    Science.gov (United States)

    Bartel, B. A.; Mothes, P. A.

    2013-12-01

    Trained citizen volunteers called vigías have worked to help monitor and communicate warnings about Tungurahua volcano, in Ecuador, since the volcano reawoke in 1999. The network, organized by the scientists of Ecuador's Instituto Geofísico de la Escuela Politécnica Nacional (Geophysical Institute) and the personnel from the Secretaría Nacional de Gestión de Riesgos (Risk Management, initially the Civil Defense), has grown to more than 20 observers living around the volcano who communicate regularly via handheld two-way radios. Interviews with participants conducted in 2010 indicate that the network enables direct communication between communities and authorities; engenders trust in scientists and emergency response personnel; builds community; and empowers communities to make decisions in times of crisis.

  8. La inclusión educativa, social y laboral de los jóvenes con discapacidad en la Universidad Laica VICENTE ROCAFUERTE

    Directory of Open Access Journals (Sweden)

    Juana Bert

    2015-06-01

    Full Text Available Se  revela el carácter complejo y multifactorial de la política inclusiva, la igualdad y justicia social, y el reto que asume la Universidad Laica VICENTE ROCAFUERTE de Guayaquil (ULVR. El análisis parte del estudio de fuentes bibliográficas reconocidas en el tema y el empleo de métodos teóricos, dirigidos a orientar las prácticas educativas inclusivas de las personas con discapacidad y su impacto en la educación superior. Con la intención de enriquecer estos resultados, se realizaron indagaciones empíricas para la exploración a un grupo de estudio seleccionado de forma intencional. En tal sentido, el sistema instrumental diseñado permitió aplicar entrevistas a docentes y encuestas a estudiantes con discapacidad que laboran en diversas empresas. Como resultado del diagnóstico inicial se integró un sistema de acciones en el proceso formativo de la ULVR que concretan el enfoque inclusivo asumido, contribuyendo a caracterizar la situación actual de la inclusión educativa de estos jóvenes en la Universidad.

  9. Dieta de morcegos filostomídeos (Mammalia, Chiroptera, Phyllostomidae em fragmento urbano do Instituto São Vicente, Campo Grande, Mato Grosso do Sul

    Directory of Open Access Journals (Sweden)

    Mariana Pires Veiga Martins

    2014-01-01

    Full Text Available Os morcegos (Chiroptera, devido à sua diversidade e abundância exercem um importante papel ecológico para o ecossistema. O objetivo deste trabalho foi reportar a dieta das espécies de morcegos frugívoros capturados nos fragmentos do Instituto São Vicente, zona urbana do município de Campo Grande, MS. As coletas ocorreram entre setembro de 2011 e Junho de 2012, sendo realizadas com o auxílio de redes-de-neblina. Foram realizadas 154 capturas, com ocorrência de 10 espécies representantes de três famílias, sendo predominantes as espécies frugívoras. Dentre as capturas foram obtidas 41 amostras fecais, onde se verificou a presença de polpa, vestígios de artrópodes e sementes. O recurso mais utilizado por quirópteros foram plantas pioneiras, constatado através do predomínio de sementes da espécie Cecropia pachystachya, consumida em maior intensidade por Artibeus lituratus. Os resultados ressaltam a importância destes animais no ambiente, em especial no processo de regeneração dessas áreas através da dispersão de sementes.

  10. The São Vicente earthquake of 2008 April and seismicity in the continental shelf off SE Brazil: further evidence for flexural stresses

    Science.gov (United States)

    Assumpção, M.; Dourado, J. C.; Ribotta, L. C.; Mohriak, W. U.; Dias, Fábio L.; Barbosa, J. R.

    2011-12-01

    The continental margin and shelf of most stable intraplate regions tend to be relatively more seismically active than the continental interior. In the southeast continental margin of Brazil, a seismic zone extends from Rio Grande do Sul to Espírito Santo, with seismic activity occurring mainly along the continental slope and suggesting a close relationship with flexural stresses caused by the weight of the sediments. In this region, earthquakes with magnitudes larger than 5 mb occur every 20-25 yr, on average. The focal mechanism solutions of previous earthquakes in this zone indicated reverse faulting on planes dipping approximately 45° with horizontal P-axes. The recent 5.2 mb earthquake of 2008 April 23 occurred 125 km south of São Vicente and was well recorded by many stations in SE Brazil, as well as at teleseismic distances in North America and Africa. Its focal depth was 17 km, locating the hypocentre in the lower crust. A well-determined focal mechanism solution shows one vertical nodal plane and one subhorizontal nodal plane. The P- and T-axes exhibit large dips, which were confirmed by a regional moment tensor inversion. This unusual orientation of the fault mechanism can be attributed to a rotation of the principal stress directions in the lower crust caused by flexural effects due to the load of recent sedimentation.

  11. Identificación, conocimiento y sensibilización sobre la inclusión de estudiantes con discapacidades de la Universidad Laica Vicente Rocafuerte de Guayaquil

    Directory of Open Access Journals (Sweden)

    Lorena Bodero Arízaga

    2013-07-01

    Full Text Available El presente trabajo de investigación muestra un estudio sobre la inclusión de estudiantes con discapacidades en la Universidad Laica Vicente Rocafuerte de Guayaquil. Un derecho que abre puertas y rompe barreras de toda índole, fortaleciendo el desarrollo humano como base fundamental de crecimiento personal dirigido a la comunidad universitaria. En el presente trabajo investigativo se realizó un diagnóstico mediante una encuesta realizada a docentes y estudiantes, la misma que refleja el conocimiento y la sensibilización hacia los estudiantes con discapacidades. Se determinó que existen nueve estudiantes con diversas discapacidades: motrices, visuales y auditiva, de los cuales dos estudiantes con discapacidad motriz y visual están por egresar de la carrera de Psicopedagogía de la Facultad de Ciencias de la Educación.

  12. Phlebotomine sandflies (Diptera: Psychodidae in São Vicente Férrer, a sympatric area to cutaneous and visceral leishmaniasis in the state of Pernambuco, Brazil

    Directory of Open Access Journals (Sweden)

    Vanessa Cristina Fitipaldi Veloso Guimarães

    2012-02-01

    Full Text Available INTRODUCTION: In the last decades, a considerable geographic expansion of the leishmaniases in all regions of Brazil has been observed. The present study was carried out to identify the composition of the phlebotomine sandfly fauna and verify the seasonal variation of the main species after environmental changes occurred in São Vicente Férrer Municipality, State of Pernambuco, Brazil. METHODS: Captures were carried out during four consecutive nights of each month using Centers for Disease Control and Prevention light traps from September 2009 to September 2010. The correlation between the number of phlebotomine sandflies captured and climatic factors (temperature and rainfall was evaluated. RESULTS: A total of 13,872 specimens belonging to 20 species were captured, of which, 6,247 (45% were females, and 7,625 (55% were males. Lutzomyia migonei was the most abundant species with 9,964 (71.8% specimens, being predominant in the intradomicile and peridomicile areas with 108 (86.4% and 9,746 (97%, respectively. In the forest remnants, Lutzomyia complexa 2,395 (65% and Lutzomyia sordellii 770 (20.8% predominated. The correlation analysis between the total number of sandflies captured and climatic factors did not show a significant influence on population density. CONCLUSIONS: The high abundance of Lutzomyia migonei and Lutzomyia complexa indicates the possibility of new cases of cutaneous leishmaniasis (CL.

  13. Prevalence and characteristics of women with induced abortion--Favela México 70, São Vicente-São Paulo.

    Science.gov (United States)

    Santos, Tássia Ferreira; Andreoni, Solange; de Souza e Silva, Rebeca

    2012-03-01

    In Brazil, abortion is among the leading causes of maternal mortality. Research has shown that abortion is practiced clandestinely by women of all social classes, but has unequal consequences depending on social inclusion, producing risks to poor women. Although the issue has been widely explored in the past 20 years, there is a lack of data about low-income women. Thus, the present study aims to estimate the prevalence of women with induced abortion. Women from a population-based household survey in low-income sectors of São Vicente, São Paulo were recruited. Women of childbearing age from 15 to 49 years were eligible. The evaluation of the prevalence ratios for women with induced abortion was performed by using generalized linear models, with Poisson log-link function and robust variance to approximate the binomial. The most frequent variables that influenced reporting of abortion were: "always accept this practice" (95% CI 2.98-11.02), followed by "not having a child born alive" (95% CI 1.35-19.78), having "two to five live births" (95% CI 1.42-14.40), "having 'six or more live births" (95% CI 1.35-19.78), "age at interview" (95% CI 1.01-1.07) and "income" abortion, which can raise awareness among women in favor of the cause, especially among those in low-income strata is necessary to prevent unnecessary deaths.

  14. A Spanish Borderlands Community: San Antonio.

    Science.gov (United States)

    Teja, Jesus F. de la

    2000-01-01

    Discusses the founding of San Antonio, originally San Antonio de Bexar, which, in 1718, came into being as a military settlement involved in Spanish imperial defensive measures. Focuses on the development and continued growth of San Antonio, Texas's most populous city in the 19th century. (CMK)

  15. The critical role of volcano monitoring in risk reduction

    Directory of Open Access Journals (Sweden)

    R. I. Tilling

    2008-01-01

    Full Text Available Data from volcano-monitoring studies constitute the only scientifically valid basis for short-term forecasts of a future eruption, or of possible changes during an ongoing eruption. Thus, in any effective hazards-mitigation program, a basic strategy in reducing volcano risk is the initiation or augmentation of volcano monitoring at historically active volcanoes and also at geologically young, but presently dormant, volcanoes with potential for reactivation. Beginning with the 1980s, substantial progress in volcano-monitoring techniques and networks – ground-based as well space-based – has been achieved. Although some geochemical monitoring techniques (e.g., remote measurement of volcanic gas emissions are being increasingly applied and show considerable promise, seismic and geodetic methods to date remain the techniques of choice and are the most widely used. Availability of comprehensive volcano-monitoring data was a decisive factor in the successful scientific and governmental responses to the reawakening of Mount St. elens (Washington, USA in 1980 and, more recently, to the powerful explosive eruptions at Mount Pinatubo (Luzon, Philippines in 1991. However, even with the ever-improving state-of-the-art in volcano monitoring and predictive capability, the Mount St. Helens and Pinatubo case histories unfortunately still represent the exceptions, rather than the rule, in successfully forecasting the most likely outcome of volcano unrest.

  16. Geologic map of Medicine Lake volcano, northern California

    Science.gov (United States)

    Donnelly-Nolan, Julie M.

    2011-01-01

    Medicine Lake volcano forms a broad, seemingly nondescript highland, as viewed from any angle on the ground. Seen from an airplane, however, treeless lava flows are scattered across the surface of this potentially active volcanic edifice. Lavas of Medicine Lake volcano, which range in composition from basalt through rhyolite, cover more than 2,000 km2 east of the main axis of the Cascade Range in northern California. Across the Cascade Range axis to the west-southwest is Mount Shasta, its towering volcanic neighbor, whose stratocone shape contrasts with the broad shield shape of Medicine Lake volcano. Hidden in the center of Medicine Lake volcano is a 7 km by 12 km summit caldera in which nestles its namesake, Medicine Lake. The flanks of Medicine Lake volcano, which are dotted with cinder cones, slope gently upward to the caldera rim, which reaches an elevation of nearly 8,000 ft (2,440 m). The maximum extent of lavas from this half-million-year-old volcano is about 80 km north-south by 45 km east-west. In postglacial time, 17 eruptions have added approximately 7.5 km3 to its total estimated volume of 600 km3, and it is considered to be the largest by volume among volcanoes of the Cascades arc. The volcano has erupted nine times in the past 5,200 years, a rate more frequent than has been documented at all other Cascades arc volcanoes except Mount St. Helens.

  17. Magma Supply System at Batur Volcano Inferred from Volcano-Tectonic Earthquakes and Their Focal Mechanism

    Directory of Open Access Journals (Sweden)

    Sri Hidayati

    2014-07-01

    Full Text Available DOI: 10.17014/ijog.v8i2.159The Volcano-Tectonic (VT earthquakes occurring during September - November 2009 were analyzed. The result shows that the epicentres aligning in NE- SW direction coincided with the weak zone of Batur Volcano Complex. The focal zone is located at the depth around 1.5 - 5.5 km beneath the summit. Migration of magma was detected by ground deformation measured by GPS and focal mechanism. Mechanism of VT earthquake shows mostly normal fault types during the swarm in November 2009.

  18. The petrological relationship between Kamen volcano and adjacent volcanoes of Klyuchevskaya group

    Science.gov (United States)

    Churikova, Tatiana; Gordeychik, Boris; Wörner, Gerhard; Ivanov, Boris; Maximov, Alexander; Lebedev, Igor; Griban, Andrey

    2010-05-01

    The Klyuchevskaya Group (KG) of volcanoes has the highest magma production rate across the Kamchatka arc and in fact for any arc worldwide. However, modern geochemical studies of Kamen volcano, which is located between Klyuchevskoy, Bezymianny and Ploskie Sopky volcanoes, were not carried out and its relation and petrogenesis in comparison to other KG volcanoes is unknown. Space-time proximity of KG volcanoes and the common zone of seismicity below them may suggest a common source and genetic relationship. However, the lavas of neighboring volcanoes are rather different: high-Mg and high-Al basalts occur at Klyuchevskoy volcano, Hbl-bearing andesites and dаcites dominate at Bezymianny and medium-high-K subalkaline rocks at Ploskie Sopky volcano. Moreover, previously it was shown that distinct fluid signatures were observed in different KG volcanoes. In this report we present geological, petrographical, mineralogical and petrochemical data on the rocks of Kamen volcano in comparison with other KG volcanoes. Three consecutive periods of volcano activity were recognized in geological history of Kamen volcano: stratovolcano formation, development of a dike complex and formation of numerous cinder and cinder-lava monogenetic cones. The rock series of volcano are divided into four groups: olivine-bearing (Ol-2Px and Ol-Cpx), olivine-free (2Px-Pl, Cpx-Pl and abundant Pl), Hb-bearing and subaphyric rocks. While olivine-bearing rocks are observed in all volcanic stages, olivine-free lavas are presented only in the stratovolcano edifice. Lavas of the monogenetic cones are presented by olivine-bearing and subaphyric rocks. Dikes are olivine-bearing and hornblende-bearing rocks. Olivines of the Kamen stratovolcano and dikes vary from Fo60 to Fo83, clinopyroxenes are augites in composition and plagioclases have a bimodal distribution with maximum modes at An50 and An86. Oxides are represented by high-Al spinel, magnetite and titaniferous magnetite. Mineral compositions of the

  19. Convair Astronautics, San Diego (California

    Directory of Open Access Journals (Sweden)

    Pereira & Luckmam, Arquitectos

    1960-05-01

    Full Text Available Este brillante y espectacular complejo industrial se ha creado especialmente para la investigación y fabricación de cohetes intercontinentales y vehículos del espacio de las Fuerzas Aéreas de los EE. UU., en las proximidades de San Diego y cerca del campo de pruebas de Sycamore Canyon.

  20. Investigating Magmatic Processes on San Cristóbal, Galápagos Through Analysis and Modeling of Newly Acquired Gravity Measurements

    Science.gov (United States)

    Cleary, Z.; Harpp, K. S.; Mittelstaedt, E. L.; Bercovici, H.; Mahr, J.; Pimentel, R.; Córdova Aguilar, M. D.

    2016-12-01

    San Cristóbal, in the eastern Galápagos, is one of the oldest islands formed by the same magmatic system currently responsible for volcanic activity in the western archipelago. Unlike the younger western islands, San Cristóbal lacks any morphological evidence of a caldera, which is a characteristic feature of the western Galápagos shield volcanoes. Instead, San Cristóbal consists of two shield complexes dominated by eruptive cones aligned along presumed fissure systems. The island thus provides an opportunity to investigate whether the dichotomy between the morphology of the western and eastern Galápagos volcanoes is a result of evolving magmatic systems or a fundamentally different set of formation processes. We are reporting the results of a recent gravitational survey on San Cristóbal's southwestern shield, which consists of 186 measurements at 500 m spacing along all passable roads. Our results indicate that the Bouguer Anomaly (BA) on the southwest shield of San Cristóbal has a range of 8 mGals. The BA has a relative low along the western part of the shield complex and a relative high in the central and eastern sections. Within the central complex, there is a prominent BA low, which corresponds to a large cone. These results contrast with previous studies performed on the western volcanoes of Fernandina and Sierra Negra (Case et al., 1974; Vigouroux et al., 2008), which exhibit a 30 mGal BA high centered over each caldera. On these volcanoes, the BA high was interpreted as a dense plug of cumulates in the magmatic system beneath the volcano's caldera. Though our results differ from those obtained in the western Galápagos, a study by Schwartz et al.(2014) on the eastern island of Santa Cruz also fails to identify a prominent gravity high. Schwartz et al. concluded that a low magma supply to older islands cannot support the caldera formation process that characterizes the western islands, which are believed to form by evacuation of shallow magma sills

  1. Instability of Hawaiian volcanoes: Chapter 4 in Characteristics of Hawaiian volcanoes

    Science.gov (United States)

    Denlinger, Roger P.; Morgan, Julia K.; Poland, Michael P.; Takahashi, T. Jane; Landowski, Claire M.

    2014-01-01

    Hawaiian volcanoes build long rift zones and some of the largest volcanic edifices on Earth. For the active volcanoes on the Island of Hawai‘i, the growth of these rift zones is upward and seaward and occurs through a repetitive process of decades-long buildup of a magma-system head along the rift zones, followed by rapid large-scale displacement of the seaward flank in seconds to minutes. This large-scale flank movement, which may be rapid enough to generate a large earthquake and tsunami, always causes subsidence along the coast, opening of the rift zone, and collapse of the magma-system head. If magma continues to flow into the conduit and out into the rift system, then the cycle of growth and collapse begins again. This pattern characterizes currently active Kīlauea Volcano, where periods of upward and seaward growth along rift zones were punctuated by large (>10 m) and rapid flank displacements in 1823, 1868, 1924, and 1975. At the much larger Mauna Loa volcano, rapid flank movements have occurred only twice in the past 200 years, in 1868 and 1951.

  2. Volcano monitoring with an infrared camera: first insights from Villarrica Volcano

    Science.gov (United States)

    Rosas Sotomayor, Florencia; Amigo Ramos, Alvaro; Velasquez Vargas, Gabriela; Medina, Roxana; Thomas, Helen; Prata, Fred; Geoffroy, Carolina

    2015-04-01

    This contribution focuses on the first trials of the, almost 24/7 monitoring of Villarrica volcano with an infrared camera. Results must be compared with other SO2 remote sensing instruments such as DOAS and UV-camera, for the ''day'' measurements. Infrared remote sensing of volcanic emissions is a fast and safe method to obtain gas abundances in volcanic plumes, in particular when the access to the vent is difficult, during volcanic crisis and at night time. In recent years, a ground-based infrared camera (Nicair) has been developed by Nicarnica Aviation, which quantifies SO2 and ash on volcanic plumes, based on the infrared radiance at specific wavelengths through the application of filters. Three Nicair1 (first model) have been acquired by the Geological Survey of Chile in order to study degassing of active volcanoes. Several trials with the instruments have been performed in northern Chilean volcanoes, and have proven that the intervals of retrieved SO2 concentration and fluxes are as expected. Measurements were also performed at Villarrica volcano, and a location to install a ''fixed'' camera, at 8km from the crater, was discovered here. It is a coffee house with electrical power, wifi network, polite and committed owners and a full view of the volcano summit. The first measurements are being made and processed in order to have full day and week of SO2 emissions, analyze data transfer and storage, improve the remote control of the instrument and notebook in case of breakdown, web-cam/GoPro support, and the goal of the project: which is to implement a fixed station to monitor and study the Villarrica volcano with a Nicair1 integrating and comparing these results with other remote sensing instruments. This works also looks upon the strengthen of bonds with the community by developing teaching material and giving talks to communicate volcanic hazards and other geoscience topics to the people who live "just around the corner" from one of the most active volcanoes

  3. SO2 camera measurements at Lastarria volcano and Lascar volcano in Chile

    Science.gov (United States)

    Lübcke, Peter; Bobrowski, Nicole; Dinger, Florian; Klein, Angelika; Kuhn, Jonas; Platt, Ulrich

    2015-04-01

    The SO2 camera is a remote-sensing technique that measures volcanic SO2 emissions via the strong SO2 absorption structures in the UV using scattered solar radiation as a light source. The 2D-imagery (usually recorded with a frame rate of up to 1 Hz) allows new insights into degassing processes of volcanoes. Besides the large advantage of high frequency sampling the spatial resolution allows to investigate SO2 emissions from individual fumaroles and not only the total SO2 emission flux of a volcano, which is often dominated by the volcanic plume. Here we present SO2 camera measurements that were made during the CCVG workshop in Chile in November 2014. Measurements were performed at Lastarria volcano, a 5700 m high stratovolcano and Lascar volcano, a 5600 m high stratovolcano both in northern Chile on 21 - 22 November, 2014 and on 26 - 27 November, 2014, respectively. At both volcanoes measurements were conducted from a distance of roughly 6-7 km under close to ideal conditions (low solar zenith angle, a very dry and cloudless atmosphere and an only slightly condensed plume). However, determination of absolute SO2 emission rates proves challenging as part of the volcanic plume hovered close to the ground. The volcanic plume therefore is in front of the mountain in our camera images. An SO2 camera system consisting of a UV sensitive CCD and two UV band-pass filters (centered at 315 nm and 330 nm) was used. The two band-pass filters are installed in a rotating wheel and images are taken with both filter sequentially. The instrument used a CCD with 1024 x 1024 pixels and an imaging area of 13.3 mm x 13.3 mm. In combination with the focal length of 32 mm this results in a field-of-view of 25° x 25°. The calibration of the instrument was performed with help of a DOAS instrument that is co-aligned with the SO2 camera. We will present images and SO2 emission rates from both volcanoes. At Lastarria gases are emitted from three different fumarole fields and we will attempt

  4. Imaging magma plumbing beneath Askja volcano, Iceland

    Science.gov (United States)

    Greenfield, Tim; White, Robert S.

    2015-04-01

    Volcanoes during repose periods are not commonly monitored by dense instrumentation networks and so activity during periods of unrest is difficult to put in context. We have operated a dense seismic network of 3-component, broadband instruments around Askja, a large central volcano in the Northern Volcanic Zone, Iceland, since 2006. Askja last erupted in 1961, with a relatively small basaltic lava flow. Since 1975 the central caldera has been subsiding and there has been no indication of volcanic activity. Despite this, Askja has been one of the more seismically active volcanoes in Iceland. The majority of these events are due to an extensive geothermal area within the caldera and tectonically induced earthquakes to the northeast which are not related to the magma plumbing system. More intriguing are the less numerous deeper earthquakes at 12-24km depth, situated in three distinct areas within the volcanic system. These earthquakes often show a frequency content which is lower than the shallower activity, but they still show strong P and S wave arrivals indicative of brittle failure, despite their location being well below the brittle-ductile boundary, which, in Askja is ~7km bsl. These earthquakes indicate the presence of melt moving or degassing at depth while the volcano is not inflating, as only high strain rates or increased pore fluid pressures would cause brittle fracture in what is normally an aseismic region in the ductile zone. The lower frequency content must be the result of a slower source time function as earthquakes which are both high frequency and low frequency come from the same cluster, thereby discounting a highly attenuating lower crust. To image the plumbing system beneath Askja, local and regional earthquakes have been used as sources to solve for the velocity structure beneath the volcano. Travel-time tables were created using a finite difference technique and the residuals were used to solve simultaneously for both the earthquake locations

  5. Lahar Hazard Modeling at Tungurahua Volcano, Ecuador

    Science.gov (United States)

    Sorensen, O. E.; Rose, W. I.; Jaya, D.

    2003-04-01

    Tungurahua Volcano (Lat. 01^o28'S; Long. 78^o27'W), located in the central Ecuadorian Andes, is an active edifice that rises more than 3 km above surrounding topography. Since European settlement in 1532, Tungurahua has experienced four major eruptive episodes: 1641-1646, 1773-1781, 1886-1888 and 1916-1918 (Hall et al, JVGR V91; p1-21, 1999). In September 1999, Tungurahua began a new period of activity that continues to the present. During this time, the volcano has erupted daily, depositing ash and blocks on its steep flanks. A pattern of continuing eruptions, coupled with rainfall up to 28 mm in a 6 hour period (rain data collected in Baños at 6-hr intervals, 3000 meters below Tungurahua’s summit), has produced an environment conducive to lahar mobilization. Tungurahua volcano presents an immediate hazard to the town of Baños, an important tourist destination and cultural center with a population of about 25,000 residents located 8 km from the crater. During the current eruptive episode, lahars have occurred as often as 3 times per week on the northern and western slopes of the volcano. Consequently, the only north-south trending highway on the west side of Tungurahua has been completely severed at the intersection of at least ten drainages, where erosion has exceeded 10 m since 1999. The La Pampa quebrada, located 1 km west of Baños, is the most active of Tungurahua's drainages. At this location, where the slope is moderate, lahars continue to inundate the only highway linking Baños to the Pan American Highway. Because of steep topography, the conventional approach of measuring planimetric inundation areas to determine the scale of lahars could not be employed. Instead, cross sections were measured in the channels using volume/cross-sectional inundation relationships determined by (Iverson et al, GSABull V110; no. 8, p972-984, 1998). After field observations of the lahars, LAHARZ, a program used in a geographic information system (GIS) to objectively map

  6. 36 CFR 7.25 - Hawaii Volcanoes National Park.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 1 2010-07-01 2010-07-01 false Hawaii Volcanoes National Park. 7.25 Section 7.25 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.25 Hawaii Volcanoes National Park....

  7. A Probabilistic Approach for Real-Time Volcano Surveillance

    Science.gov (United States)

    Cannavo, F.; Cannata, A.; Cassisi, C.; Di Grazia, G.; Maronno, P.; Montalto, P.; Prestifilippo, M.; Privitera, E.; Gambino, S.; Coltelli, M.

    2016-12-01

    Continuous evaluation of the state of potentially dangerous volcanos plays a key role for civil protection purposes. Presently, real-time surveillance of most volcanoes worldwide is essentially delegated to one or more human experts in volcanology, who interpret data coming from different kind of monitoring networks. Unfavorably, the coupling of highly non-linear and complex volcanic dynamic processes leads to measurable effects that can show a large variety of different behaviors. Moreover, due to intrinsic uncertainties and possible failures in some recorded data, the volcano state needs to be expressed in probabilistic terms, thus making the fast volcano state assessment sometimes impracticable for the personnel on duty at the control rooms. With the aim of aiding the personnel on duty in volcano surveillance, we present a probabilistic graphical model to estimate automatically the ongoing volcano state from all the available different kind of measurements. The model consists of a Bayesian network able to represent a set of variables and their conditional dependencies via a directed acyclic graph. The model variables are both the measurements and the possible states of the volcano through the time. The model output is an estimation of the probability distribution of the feasible volcano states. We tested the model on the Mt. Etna (Italy) case study by considering a long record of multivariate data from 2011 to 2015 and cross-validated it. Results indicate that the proposed model is effective and of great power for decision making purposes.

  8. Using Google Earth to Study the Basic Characteristics of Volcanoes

    Science.gov (United States)

    Schipper, Stacia; Mattox, Stephen

    2010-01-01

    Landforms, natural hazards, and the change in the Earth over time are common material in state and national standards. Volcanoes exemplify these standards and readily capture the interest and imagination of students. With a minimum of training, students can recognize erupted materials and types of volcanoes; in turn, students can relate these…

  9. Volcano ecology: Disturbance characteristics and assembly of biological communities

    Science.gov (United States)

    Volcanic eruptions are powerful expressions of Earth’s geophysical forces which have shaped and influenced ecological systems since the earliest days of life. The study of the interactions of volcanoes and ecosystems, termed volcano ecology, focuses on the ecological responses of organisms and biolo...

  10. Monte Carlo Volcano Seismic Moment Tensors

    Science.gov (United States)

    Waite, G. P.; Brill, K. A.; Lanza, F.

    2015-12-01

    Inverse modeling of volcano seismic sources can provide insight into the geometry and dynamics of volcanic conduits. But given the logistical challenges of working on an active volcano, seismic networks are typically deficient in spatial and temporal coverage; this potentially leads to large errors in source models. In addition, uncertainties in the centroid location and moment-tensor components, including volumetric components, are difficult to constrain from the linear inversion results, which leads to a poor understanding of the model space. In this study, we employ a nonlinear inversion using a Monte Carlo scheme with the objective of defining robustly resolved elements of model space. The model space is randomized by centroid location and moment tensor eigenvectors. Point sources densely sample the summit area and moment tensors are constrained to a randomly chosen geometry within the inversion; Green's functions for the random moment tensors are all calculated from modeled single forces, making the nonlinear inversion computationally reasonable. We apply this method to very-long-period (VLP) seismic events that accompany minor eruptions at Fuego volcano, Guatemala. The library of single force Green's functions is computed with a 3D finite-difference modeling algorithm through a homogeneous velocity-density model that includes topography, for a 3D grid of nodes, spaced 40 m apart, within the summit region. The homogenous velocity and density model is justified by long wavelength of VLP data. The nonlinear inversion reveals well resolved model features and informs the interpretation through a better understanding of the possible models. This approach can also be used to evaluate possible station geometries in order to optimize networks prior to deployment.

  11. VALVE: Volcano Analysis and Visualization Environment

    Science.gov (United States)

    Cervelli, D. P.; Cervelli, P.; Miklius, A.; Krug, R.; Lisowski, M.

    2002-12-01

    Modern volcano observatories collect data using a wide variety of instruments. Visualizing these disparate data on a common time base is critical to interpreting and reacting to geophysical changes. With this in mind, the Hawaiian Volcano Observatory (HVO) created Valve, the Volcano Analysis and Visualization Environment. Valve integrates a wide range of both continuous and discontinuous data sources into a common, internet web-browser based interface that allows scientists to interactively select and visualize these data on a common time base and, if appropriate, in three dimensions. Advances in modern internet browser technology allow for a truly interactive user-interface experience that could previously only be found in stand-alone applications--all while maintaining client platform independence and network portability. This system aids more traditional in-depth analysis by providing a common front-end to retrieving raw data. In most cases, the raw data are being served from an SQL database, a system that lends itself to quickly retrieving, logically arranging, and safely storing data. Beyond Valve's visualization capabilities, the system also provides a variety of tools for time series analysis and source modeling. For example, a user could load several tilt and GPS time series, estimate co-seismic or co-intrusive deformation, and then model the event with an elastic point source or dislocation. From the source model, Coulomb stress changes could be calculated and compared to pre- and post-event hypocenter distribution. Employing a heavily object-oriented design, Valve is easily extensible, modular, portable, and remarkably cost efficient. Quickly visualizing arbitrary data is a trivial matter, while implementing methods for permanent, continuous data streams requires only minimal programming. Portability is ensured by using software that is readily available on a wide variety of operating systems; cost efficiency is achieved by using software that is open

  12. Copahue volcano and its regional magmatic setting

    Science.gov (United States)

    Varekamp, J C; Zareski, J E; Camfield, L M; Todd, Erin

    2016-01-01

    Copahue volcano (Province of Neuquen, Argentina) has produced lavas and strombolian deposits over several 100,000s of years, building a rounded volcano with a 3 km elevation. The products are mainly basaltic andesites, with the 2000–2012 eruptive products the most mafic. The geochemistry of Copahue products is compared with those of the main Andes arc (Llaima, Callaqui, Tolhuaca), the older Caviahue volcano directly east of Copahue, and the back arc volcanics of the Loncopue graben. The Caviahue rocks resemble the main Andes arc suite, whereas the Copahue rocks are characterized by lower Fe and Ti contents and higher incompatible element concentrations. The rocks have negative Nb-Ta anomalies, modest enrichments in radiogenic Sr and Pb isotope ratios and slightly depleted Nd isotope ratios. The combined trace element and isotopic data indicate that Copahue magmas formed in a relatively dry mantle environment, with melting of a subducted sediment residue. The back arc basalts show a wide variation in isotopic composition, have similar water contents as the Copahue magmas and show evidence for a subducted sedimentary component in their source regions. The low 206Pb/204Pb of some backarc lava flows suggests the presence of a second endmember with an EM1 flavor in its source. The overall magma genesis is explained within the context of a subducted slab with sediment that gradually looses water, water-mobile elements, and then switches to sediment melt extracts deeper down in the subduction zone. With the change in element extraction mechanism with depth comes a depletion and fractionation of the subducted complex that is reflected in the isotope and trace element signatures of the products from the main arc to Copahue to the back arc basalts.

  13. Mechanical coupling between earthquakes, volcanos and landslides

    Science.gov (United States)

    Feigl, K. L.; Retina Team

    2003-04-01

    "The eruption began as a large earthquake that triggered a massive landslide that culminated in a violent lateral explosion" [Malone et al., USGS 1981]. The 1980 eruption of Mount St. Helens taught a very powerful lesson -- that one natural hazard can trigger another. For example, earthquakes have triggered landslides in Papua New Guinea. Similarly, eruptions of Vesuvius are mechanically coupled to earthquakes in the Appenines, just as an inflating magma chamber can trigger earthquakes near Hengill volcano in SW Iceland and on the Izu Peninsula in Japan. The Luzon earthquake may have triggered the eruption of Mount Pinatubo. In many of these cases, the second triggered event caused more damage than the initial one. If we can better understand the mechanical coupling underlying the temporal and spatial correlation of such events, we will improve our assessments of the hazards they pose. The RETINA project has been funded by the European Commission's 5th Framework to study couplings between three classes of natural hazards: earthquakes, landslides, and volcanoes. These three phenomena are linked to and by the stress field in the crust. If the stress increases enough, the material will fail catastrophically. For example, magma injection beneath a volcano can trigger an earthquake by increasing stress on a fault. Increasing shear stress on unconsolidated materials on steep slopes can trigger landslides. Such stress change triggers may also be tectonic (from plate driving forces), hydrological (from heavy rain), or volcanic (magmatic injection). Any of these events can perturb the stress field enough to trigger another event. Indeed, stress changes as small as 0.1 bar (0.01 MPa) suffice to trigger an earthquake. If the medium is close to failure, this small change can increase the Coulomb stress beyond the yield threshold, breaking the material. This quantity is the primary means we will use for describing mechanical coupling. In this paper, we will review several case

  14. Geology of El Chichon volcano, Chiapas, Mexico

    Science.gov (United States)

    Duffield, W.A.; Tilling, R.I.; Canul, R.

    1984-01-01

    The (pre-1982) 850-m-high andesitic stratovolcano El Chicho??n, active during Pleistocene and Holocene time, is located in rugged, densely forested terrain in northcentral Chiapas, Me??xico. The nearest neighboring Holocene volcanoes are 275 km and 200 km to the southeast and northwest, respectively. El Chicho??n is built on Tertiary siltstone and sandstone, underlain by Cretaceous dolomitic limestone; a 4-km-deep bore hole near the east base of the volcano penetrated this limestone and continued 770 m into a sequence of Jurassic or Cretaceous evaporitic anhydrite and halite. The basement rocks are folded into generally northwest-trending anticlines and synclines. El Chicho??n is built over a small dome-like structure superposed on a syncline, and this structure may reflect cumulative deformation related to growth of a crustal magma reservoir beneath the volcano. The cone of El Chicho??n consists almost entirely of pyroclastic rocks. The pre-1982 cone is marked by a 1200-m-diameter (explosion?) crater on the southwest flank and a 1600-m-diameter crater apparently of similar origin at the summit, a lava dome partly fills each crater. The timing of cone and dome growth is poorly known. Field evidence indicates that the flank dome is older than the summit dome, and K-Ar ages from samples high on the cone suggest that the flank dome is older than about 276,000 years. At least three pyroclastic eruptions have occurred during the past 1250 radiocarbon years. Nearly all of the pyroclastic and dome rocks are moderately to highly porphyritic andesite, with plagioclase, hornblende and clinopyroxene the most common phenocrysts. Geologists who mapped El Chicho??n in 1980 and 1981 warned that the volcano posed a substantial hazard to the surrounding region. This warning was proven to be prophetic by violent eruptions that occurred in March and April of 1982. These eruptions blasted away nearly all of the summit dome, blanketed the surrounding region with tephra, and sent

  15. Mud Volcanoes as Exploration Targets on Mars

    Science.gov (United States)

    Allen, Carlton C.; Oehler, Dorothy Z.

    2010-01-01

    Tens of thousands of high-albedo mounds occur across the southern part of the Acidalia impact basin on Mars. These structures have geologic, physical, mineralogic, and morphologic characteristics consistent with an origin from a sedimentary process similar to terrestrial mud volcanism. The potential for mud volcanism in the Northern Plains of Mars has been recognized for some time, with candidate mud volcanoes reported from Utopia, Isidis, northern Borealis, Scandia, and the Chryse-Acidalia region. We have proposed that the profusion of mounds in Acidalia is a consequence of this basin's unique geologic setting as the depocenter for the tune fraction of sediments delivered by the outflow channels from the highlands.

  16. Galactic Super-volcano in Action

    Science.gov (United States)

    2010-08-01

    A galactic "super-volcano" in the massive galaxy M87 is erupting and blasting gas outwards, as witnessed by NASA's Chandra X-ray Observatory and NSF's Very Large Array. The cosmic volcano is being driven by a giant black hole in the galaxy's center and preventing hundreds of millions of new stars from forming. Astronomers studying this black hole and its effects have been struck by the remarkable similarities between it and a volcano in Iceland that made headlines earlier this year. At a distance of about 50 million light years, M87 is relatively close to Earth and lies at the center of the Virgo cluster, which contains thousands of galaxies. M87's location, coupled with long observations over Chandra's lifetime, has made it an excellent subject for investigations of how a massive black hole impacts its environment. "Our results show in great detail that supermassive black holes have a surprisingly good control over the evolution of the galaxies in which they live," said Norbert Werner of the Kavli Institute for Particle Astrophysics and Cosmology at Stanford University and the SLAC National Accelerator Laboratory, who led one of two papers describing the study. "And it doesn't stop there. The black hole's reach extends ever farther into the entire cluster, similar to how one small volcano can affect practically an entire hemisphere on Earth." The cluster surrounding M87 is filled with hot gas glowing in X-ray light, which is detected by Chandra. As this gas cools, it can fall toward the galaxy's center where it should continue to cool even faster and form new stars. However, radio observations with the Very Large Array suggest that in M87 jets of very energetic particles produced by the black hole interrupt this process. These jets lift up the relatively cool gas near the center of the galaxy and produce shock waves in the galaxy's atmosphere because of their supersonic speed. The scientists involved in this research have found the interaction of this cosmic

  17. Volcano morphometry and volume scaling on Venus

    Science.gov (United States)

    Garvin, J. B.; Williams, R. S., Jr.

    1994-03-01

    A broad variety of volcanic edifices have been observed on Venus. They ranged in size from the limits of resolution of the Magellan SAR (i.e., hundreds of meters) to landforms over 500 km in basal diameter. One of the key questions pertaining to volcanism on Venus concerns the volume eruption rate or VER, which is linked to crustal productivity over time. While less than 3 percent of the surface area of Venus is manifested as discrete edifices larger than 50 km in diameter, a substantial component of the total crustal volume of the planet over the past 0.5 Ga is related to isolated volcanoes, which are certainly more easily studied than the relatively diffusely defined plains volcanic flow units. Thus, we have focused our efforts on constraining the volume productivity of major volcanic edifices larger than 100 km in basal diameter. Our approach takes advantage of the topographic data returned by Magellan, as well as our database of morphometric statistics for the 20 best known lava shields of Iceland, plus Mauna Loa of Hawaii. As part of this investigation, we have quantified the detailed morphometry of nearly 50 intermediate to large scale edifices, with particular attention to their shape systematics. We found that a set of venusian edifices which include Maat, Sapas, Tepev, Sif, Gula, a feature at 46 deg S, 215 deg E, as well as the shield-like structure at 10 deg N, 275 deg E are broadly representative of the approx. 400 volcanic landforms larger than 50 km. The cross-sectional shapes of these 7 representative edifices range from flattened cones (i.e., Sif) similar to classic terrestrial lava shields such as Mauna Loa and Skjaldbreidur, to rather dome-like structures which include Maat and Sapas. The majority of these larger volcanoes surveyed as part of our study displayed cross-sectional topographies with paraboloidal shaped, in sharp contrast with the cone-like appearance of most simple terrestrial lava shields. In order to more fully explore the

  18. Volcano deformation and subdaily GPS products

    Science.gov (United States)

    Grapenthin, Ronni

    Volcanic unrest is often accompanied by hours to months of deformation of the ground that is measurable with high-precision GPS. Although GPS receivers are capable of near continuous operation, positions are generally estimated for daily intervals, which I use to infer characteristics of a volcano’s plumbing system. However, GPS based volcano geodesy will not be useful in early warning scenarios unless positions are estimated at high rates and in real time. Visualization and analysis of dynamic and static deformation during the 2011 Tohokuoki earthquake in Japan motivates the application of high-rate GPS from a GPS seismology perspective. I give examples of dynamic seismic signals and their evolution to the final static offset in 30 s and 1 s intervals, which demonstrates the enhancement of subtle rupture dynamics through increased temporal resolution. This stresses the importance of processing data at recording intervals to minimize signal loss. Deformation during the 2009 eruption of Redoubt Volcano, Alaska, suggested net deflation by 0.05 km³ in three distinct phases. Mid-crustal aseismic precursory inflation began in May 2008 and was detected by a single continuous GPS station about 28 km NE of Redoubt. Deflation during the explosive and effusive phases was sourced from a vertical ellipsoidal reservoir at about 7-11.5 km. From this I infer a model for the temporal evolution of a complex plumbing system of at least 2 sources during the eruption. Using subdaily GPS positioning solutions I demonstrate that plumes can be detected and localized by utilizing information on phase residuals. The GPS network at Bezymianny Volcano, Kamchatka, records network wide subsidence at rapid rates between 8 and 12 mm/yr from 2005-2010. I hypothesize this to be caused by continuous deflation of a ˜30 km deep sill under Kluchevskoy Volcano. Interestingly, 1-2 explosive events per year cause little to no deformation at any site other than the summit site closest to the vent. I

  19. Magmatic gas scrubbing: Implications for volcano monitoring

    Science.gov (United States)

    Symonds, R.B.; Gerlach, T.M.; Reed, M.H.

    2001-01-01

    Despite the abundance of SO2(g) in magmatic gases, precursory increases in magmatic SO2(g) are not always observed prior to volcanic eruption, probably because many terrestrial volcanoes contain abundant groundwater or surface water that scrubs magmatic gases until a dry pathway to the atmosphere is established. To better understand scrubbing and its implications for volcano monitoring, we model thermochemically the reaction of magmatic gases with water. First, we inject a 915??C magmatic gas from Merapi volcano into 25??C air-saturated water (ASW) over a wide range of gas/water mass ratios from 0.0002 to 100 and at a total pressure of 0.1 MPa. Then we model closed-system cooling of the magmatic gas, magmatic gas-ASW mixing at 5.0 MPa, runs with varied temperature and composition of the ASW, a case with a wide range of magmatic-gas compositions, and a reaction of a magmatic gas-ASW mixture with rock. The modeling predicts gas and water compositions, and, in one case, alteration assemblages for a wide range of scrubbing conditions; these results can be compared directly with samples from degassing volcanoes. The modeling suggests that CO2(g) is the main species to monitor when scrubbing exists; another candidate is H2S(g), but it can be affected by reactions with aqueous ferrous iron. In contrast, scrubbing by water will prevent significant SO2(g) and most HCl(g) emissions until dry pathways are established, except for moderate HCl(g) degassing from pH 100 t/d (tons per day) of SO2(g) in addition to CO2(g) and H2S(g) should be taken as a criterion of magma intrusion. Finally, the modeling suggests that the interpretation of gas-ratio data requires a case-by-case evaluation since ratio changes can often be produced by several mechanisms; nevertheless, several gas ratios may provide useful indices for monitoring the drying out of gas pathways. Published by Elsevier Science B.V.

  20. Slow slip event at Kilauea Volcano

    Science.gov (United States)

    Poland, Michael P.; Miklius, Asta; Wilson, J. David; Okubo, Paul G.; Montgomery-Brown, Emily; Segall, Paul; Brooks, Benjamin; Foster, James; Wolfe, Cecily; Syracuse, Ellen; Thurbe, Clifford

    2010-01-01

    Early in the morning of 1 February 2010 (UTC; early afternoon 31 January 2010 local time), continuous Global Positioning System (GPS) and tilt instruments detected a slow slip event (SSE) on the south flank of Kilauea volcano, Hawaii. The SSE lasted at least 36 hours and resulted in a maximum of about 3 centimeters of seaward displacement. About 10 hours after the start of the slip, a flurry of small earthquakes began (Figure 1) in an area of the south flank recognized as having been seismically active during past SSEs [Wolfe et al., 2007], suggesting that the February earthquakes were triggered by stress associated with slip [Segall et al., 2006].

  1. Mud volcanoes of trinidad as astrobiological analogs for martian environments.

    Science.gov (United States)

    Hosein, Riad; Haque, Shirin; Beckles, Denise M

    2014-01-01

    Eleven onshore mud volcanoes in the southern region of Trinidad have been studied as analog habitats for possible microbial life on Mars. The profiles of the 11 mud volcanoes are presented in terms of their physical, chemical, mineralogical, and soil properties. The mud volcanoes sampled all emitted methane gas consistently at 3% volume. The average pH for the mud volcanic soil was 7.98. The average Cation Exchange Capacity (CEC) was found to be 2.16 kg/mol, and the average Percentage Water Content was 34.5%. Samples from three of the volcanoes, (i) Digity; (ii) Piparo and (iii) Devil's Woodyard were used to culture bacterial colonies under anaerobic conditions indicating possible presence of methanogenic microorganisms. The Trinidad mud volcanoes can serve as analogs for the Martian environment due to similar geological features found extensively on Mars in Acidalia Planitia and the Arabia Terra region.

  2. Mud Volcanoes of Trinidad as Astrobiological Analogs for Martian Environments

    Directory of Open Access Journals (Sweden)

    Riad Hosein

    2014-10-01

    Full Text Available Eleven onshore mud volcanoes in the southern region of Trinidad have been studied as analog habitats for possible microbial life on Mars. The profiles of the 11 mud volcanoes are presented in terms of their physical, chemical, mineralogical, and soil properties. The mud volcanoes sampled all emitted methane gas consistently at 3% volume. The average pH for the mud volcanic soil was 7.98. The average Cation Exchange Capacity (CEC was found to be 2.16 kg/mol, and the average Percentage Water Content was 34.5%. Samples from three of the volcanoes, (i Digity; (ii Piparo and (iii Devil’s Woodyard were used to culture bacterial colonies under anaerobic conditions indicating possible presence of methanogenic microorganisms. The Trinidad mud volcanoes can serve as analogs for the Martian environment due to similar geological features found extensively on Mars in Acidalia Planitia and the Arabia Terra region.

  3. Water in volcanoes: evolution, storage and rapid release during landslides.

    Science.gov (United States)

    Delcamp, Audray; Roberti, Gioachino; van Wyk de Vries, Benjamin

    2016-12-01

    Volcanoes can store and drain water that is used as a valuable resource by populations living on their slopes. The water drainage and storage pattern depend on the volcano lithologies and structure, as well as the geological and hydrometric settings. The drainage and storage pattern will change according to the hydrometric conditions, the vegetation cover, the eruptive activity and the long- and short-term volcano deformation. Inspired by our field observations and based on geology and structure of volcanic edifices, on hydrogeological studies, and modelling of water flow in opening fractures, we develop a model of water storage and drainage linked with volcano evolution. This paper offers a first-order general model of water evolution in volcanoes.

  4. Translating Volcano Hazards Research in the Cascades Into Community Preparedness

    Science.gov (United States)

    Ewert, J. W.; Driedger, C. L.

    2015-12-01

    Research by the science community into volcanic histories and physical processes at Cascade volcanoes in the states of Washington, Oregon, and California has been ongoing for over a century. Eruptions in the 20th century at Lassen Peak and Mount St. Helen demonstrated the active nature of Cascade volcanoes; the 1980 eruption of Mount St. Helens was a defining moment in modern volcanology. The first modern volcano hazards assessments were produced by the USGS for some Cascade volcanoes in the 1960s. A rich scientific literature exists, much of which addresses hazards at these active volcanoes. That said community awareness, planning, and preparation for eruptions generally do not occur as a result of a hazard analyses published in scientific papers, but by direct communication with scientists. Relative to other natural hazards, volcanic eruptions (or large earthquakes, or tsunami) are outside common experience, and the public and many public officials are often surprised to learn of the impacts volcanic eruptions could have on their communities. In the 1980s, the USGS recognized that effective hazard communication and preparedness is a multi-faceted, long-term undertaking and began working with federal, state, and local stakeholders to build awareness and foster community action about volcano hazards. Activities included forming volcano-specific workgroups to develop coordination plans for volcano emergencies; a concerted public outreach campaign; curriculum development and teacher training; technical training for emergency managers and first responders; and development of hazard information that is accessible to non-specialists. Outcomes include broader ownership of volcano hazards as evidenced by bi-national exchanges of emergency managers, community planners, and first responders; development by stakeholders of websites focused on volcano hazards mitigation; and execution of table-top and functional exercises, including evacuation drills by local communities.

  5. Cartografía y cartografía simbólica Las "Theses de Mathematicas, de Cosmographia e Hidrographia" de Vicente De Memije

    Directory of Open Access Journals (Sweden)

    Alfredo J. Morales Martinez

    Full Text Available Resumen Frente a la ruta que desde el siglo XVI enlazaba la Península Ibérica con las islas Filipinas, Vicente de Memije propuso en la Tesis presentada en Manila en 1761, una nueva ruta directa que bordeaba el Cabo de Hornos. Su texto se dedica al rey Carlos III a quien anima a continuar la tarea de evangelización de Asia de sus antecesores, partiendo para ello del archipiélago filipino, que ya desde el siglo XVI había servido de plataforma a las órdenes religiosas para llevar a cabo la conquista espiritual de las tierras asiáticas. También trata de demostrar la necesidad de establecer una cartografía hispánica basada en la medición de los grados de longitud hacia poniente, rechazando las medidas que distintos cosmógrafos habían otorgado a los dominios españoles y al Pacífico. La Tesis presenta como aparato gráfico dos estampas de gran valor científico y artístico. Para confeccionar la primera, firmada por Nicolás de la Cruz Bagay, acudió a diversas fuentes gráficas francesas, inglesas y holandesas, siendo limitadas las informaciones obtenidas en obras españolas. La segunda estampa aparece firmada por Laureano de Atlas y constituye una de las mejores creaciones de la cartografía simbólica.

  6. La campaña presidencial de Vicente Fox y el modelo propagandista de comunicación política

    Directory of Open Access Journals (Sweden)

    Adriana BORJAS BENAVENTE

    2010-10-01

    Full Text Available : Con base en las características atribuidas por Dominique Wolton a la comunicación política, es posible situar el surgimiento pleno de esta última en México durante el proceso electoral de 1988, cuando los discursos de la opinión pública a través de los sondeos comenzaron a introducirse en el espacio público. A partir de entonces, al producirse el intercambio de mensajes entre los actores con legitimidad, empezó a configurarse un modelo de comunicación política, cuyos rasgos esenciales surgieron o se reafirmaron durante la campaña para las elecciones presidenciales de julio de 2000 y que, en tanto coinciden con la tipología establecida por Gilles Achache, corresponden al modelo propagandista. Dar cuenta de la campaña electoral de Vicente Fox, candidato del Partido Acción Nacional a la Presidencia de la República mexicana en el año 2000, establecer las diferencias que representó respecto a las campañas de otros candidatos, así como en relación al comportamiento tradicionalmente observado por los distintos actores políticos en épocas electorales anteriores, a efecto de demostrar que al introducir y privilegiar el uso de la mercadotecnia política en el espacio público, la campaña foxista constituyó un factor determinante en la configuración del modelo propagandista de comunicación política que actualmente existe en México, constituye el propósito de este trabajo.

  7. Esteticismo y compromiso social en Euterpologio politonal de Vicente Rosales y Rosales. Re actualización y superación del modernismo en El Salvador

    Directory of Open Access Journals (Sweden)

    Marco Thomas Bosshard

    2011-12-01

    Full Text Available El presente artículo aclarará las múltiples referencias del autor al simbolismo, al modernismo y al vanguardismo e igualmente ubicará a Rosales y Rosales ante el trasfondo de aquellos discursos antropológicos y estéticos que a partir de 1900 empezaron a resaltar el ritmo como factor decisivo para poder definir la raza. También mediante el análisis de los poemas contenidos en Euterpologio politonal destaca la combinación de lo rítmico con lo racial-indígena, hecho notable, dado que el autor reelaboró el poemario después de que los indígenas salvadoreños fueron aniquilados casi por completo como consecuencia de La Matanza de 1932. Así, el aparente esteticismo apolítico de Rosales y Rosales asume aspectos inesperados de compromiso social que requieren una revalorización de su escritura.This article will discuss the multiple references of Vicente Rosales y Rosales, to the poetics of French symbolism, American modernisms and the international avant-garde in order to locate his position within the ethnographic and aesthetic discourses on the relation of rhythm and race that appeared since the end of the 19th century. This seems to be especially important, though rhythmic and racial elements are both present in Rosales y Rosales’ poems analyzed here. Considering the fact that Salvadorean natives were almost completely killed during the so-called La Matanza in 1932 and that Rosales y Rosales started to rewrite his Euterpologio politonal after this incident, the apparently apolitical frame of Rosales y Rosales’ aestheticism unexpectedly turns to social compromiso —a fact that requires a revalorization of his writing.

  8. Características clínicas y epidemiológicas de las quemaduras, en el Servicio de Cirugía Pediátrica del Hospital Vicente Corral Moscoso. Enero 2014 – junio 2015

    OpenAIRE

    Rodríguez Cárdenas, Nancy Faviola

    2016-01-01

    Objetivo: Conocer las características clínicas y epidemiológicas de las quemaduras en pacientes hospitalizados en el Servicio de Cirugía Pediátrica del Hospital Vicente Corral Moscoso, Enero 2014 a Junio de 2015. Metodología: Se realizó un estudio descriptivo, que incluyó a todos los pacientes menores de 16 años hospitalizados por quemaduras, valorando clínicamente para la clasificación de las quemaduras, revisando fichas para el tratamiento; el representante legal firmó el co...

  9. Estudio de la aspiración manual endouterina en el aborto incompleto en el Hospital Vicente Corral Moscoso y elaboración de un autoinstructivo para multimedia

    OpenAIRE

    Jordán Cevallos, Lorena Fabiola; Monsalve Vela, César Alfonso; Naula Sanay, Sara Elizabeth

    2006-01-01

    El estudio se realizó en el servicio de Ginecología del Hospital Vicente Corral Moscoso con la finalidad de valorar la aspiración manual endouterinacomo técnica de tratamiento del aborto incompleto, establecer las normas de atención y elaborar un autoinstructivo en multimedia para difundir la técnica. Con un diseño descriptivo incluye a 50 pacientes con diagnóstico de aborto incompleto y menorrea de hasta 12 semanas. El procedimiento se basó en esta secuencia: 1) ingreso de la paciente con di...

  10. La educación por los sentidos: memoria y formación en Contra paraíso y Tranvía a la Malvarrosa de Manuel Vicent

    OpenAIRE

    Balverde, Gerardo J.

    2008-01-01

    Manuel Vicent ha publicado hasta el presente cuatro libros que han sido considerados como autobiográficos: Contra paraíso (1993), Tranvía a la Malvarrosa (1994), Jardín de Villa Valeria (1996) y Verás el cielo abierto (2006). Los dos primeros remiten a los períodos de infancia y juventud, y conforman, leídos en conjunto, una autoficción a la vez que una novela de formación que, con el fondo reconocible de la dictadura franquista, cuenta las peripecias y descubrimientos de un protagonista que ...

  11. La educación por los sentidos: Memoria y formación en Contra paraíso y Tranvía a la Malvarrosa de Manuel Vicent

    OpenAIRE

    Balverde, Gerardo J.

    2008-01-01

    Manuel Vicent ha publicado hasta el presente cuatro libros que han sido considerados como autobiográficos: Contra paraíso (1993), Tranvía a la Malvarrosa (1994), Jardín de Villa Valeria (1996) y Verás el cielo abierto (2006). Los dos primeros remiten a los períodos de infancia y juventud, y conforman, leídos en conjunto, una autoficción a la vez que una novela de formación que, con el fondo reconocible de la dictadura franquista, cuenta las peripecias y descubrimientos de un protagonista que ...

  12. Frecuencia de infecciones respiratorias inferiores causadas por el virus sincitial respiratorio, en niños menores de dos años, hospitalizados en el servicio de pediatría del Hospital Vicente Corral Moscoso, Cuenca, 2008

    OpenAIRE

    Célleri Gomescoello, Alba Milena; Jerez Cárdenas, Doris Patricia; Ortíz Hinojosa, María Fernanda

    2009-01-01

    Con el objetivo de determinar la frecuencia de infecciones respiratorias agudas bajas (IRABs) causadas por el virus sincitial respiratorio (VSR), en niños menores de dos años, hospitalizados en el servicio de pediatría del hospital Vicente Corral Moscoso. Materiales y métodos: estudio descriptivo, realizado en 163 niños/as menores de 2 años de edad, con infección respiratoria aguda baja. Se estudió al universo, es decir al total de la población seleccionada durante el período de 6 meses. Se e...

  13. La educación por los sentidos : Memoria y formación en Contra paraíso y Tranvía a la Malvarrosa de Manuel Vicent

    OpenAIRE

    2008-01-01

    Manuel Vicent ha publicado hasta el presente cuatro libros que han sido considerados como autobiográficos: Contra paraíso (1993), Tranvía a la Malvarrosa (1994), Jardín de Villa Valeria (1996) y Verás el cielo abierto (2006). Los dos primeros remiten a los períodos de infancia y juventud, y conforman, leídos en conjunto, una autoficción a la vez que una novela de formación que, con el fondo reconocible de la dictadura franquista, cuenta las peripecias y descubrimientos de un protagonista que ...

  14. Estudio de la aspiración manual endouterina en el aborto incompleto en el Hospital Vicente Corral Moscoso y elaboración de un autoinstructivo para multimedia

    OpenAIRE

    Jordán Cevallos, Lorena Fabiola; Monsalve Vela, César Alfonso; Naula Sanay, Sara Elizabeth

    2006-01-01

    El estudio se realizó en el servicio de Ginecología del Hospital Vicente Corral Moscoso con la finalidad de valorar la aspiración manual endouterinacomo técnica de tratamiento del aborto incompleto, establecer las normas de atención y elaborar un autoinstructivo en multimedia para difundir la técnica. Con un diseño descriptivo incluye a 50 pacientes con diagnóstico de aborto incompleto y menorrea de hasta 12 semanas. El procedimiento se basó en esta secuencia: 1) ingreso de la paciente con di...

  15. Premedicación con midazolam vía oral en pacientes pediátricos, Hospitales Vicente Corral Moscoso, José Carrasco Arteaga Cuenca 1996 -1997

    OpenAIRE

    Carrera Reyes, Rosa Eulalia; Peña C., Jorge

    1998-01-01

    Objetivos: Disminuir la ansiedad y el estrés que presentan los niños que van a ser sometidos a intervenciones quirúrgicas, antes de ingresar a la sala de operaciones. Materiales y Métodos: Se incluyeron 128 niños de ambos sexos, ASA I-II entre 1 y 12 años, sometidos a cirugía en los hospitales José Carrasco de IESS y Vicente Corral del MSP, de la ciudad de Cuenca, desde noviembre de 1996 hasta noviembre de 1997. Se formaron dos grupos aleatorizados: a] grupo CON MIDAZOLAM [Mz], 64 niños a los...

  16. La Sibylle au miroir des Anciens comme reflet de l’image de la Modernité dans l’Auto de la Sibila Casandra de Gil Vicente (début XVIe s.

    Directory of Open Access Journals (Sweden)

    Elvezio Canonica

    2013-06-01

    Full Text Available La communication se propose d’explorer le traitement de la figure de la Sibylle dans une représentation religieuse de Gil Vicente, un dramaturge portugais bilingue du début du XVIe siècle, composée en espagnol : l’Auto de la Sibila Cassandra, une œuvre dont les personnages (Sibylles et prophètes sont des bergers. Il s’agit du réemploi d’un modèle antique (celui de la Sibylle de Cumes, en particulier et de la récupération d’une thématique païenne dans une perspective chrétienne, en accord avec la représentation navideña. La Sibylle Cassandre, étant convaincue, d’après une prophétie, d’être celle qui a été choisie pour être la mère du Christ, refuse toute proposition de mariage, notamment celle de Salomon. Par ce personnage, Gil Vicente établit un lien avec le Cantique des cantiques et montre a contrario une attitude critique envers l’Église de son temps.Esta contribución se propone explorar el tratamiento de la figura de la sibila en una representación dramática de Gil Vicente, que posee un carácter religioso y didáctico: el Auto de la Sibila Casandra, una obra cuyos personajes (las sibilas y lo profetas son representados como pastores y que fue compuesta en español por este dramaturgo portugués bilingüe de principios del s. XVI. Se trata de la recuperación de un modelo de la antigüedad, el de la sibila de Cumas, así como de una temática pagana en una perspectiva cristiana, de acuerdo con la representación navideña. La sibila Casandra, al estar convencida, de acuerdo con una profecía, de haber sido elegida para ser la madre de Cristo, rechaza todas las propuestas de matrimonio, en particular la de Salomón. Por medio de este último personaje, Gil Vicente consigue establecer un enlace con el Cantar de los cantares, lo cual le permite mostrar a contrario una actitud crítica hacia la Iglesia de su tiempo.

  17. Tectonic control and mass-wasting processes along S. Vicente Canyon (SW Iberia): evidences from multibeam bathymetry and seismic reflection data

    Science.gov (United States)

    Valadares, V.; Roque, C.; Terrinha, P.

    2009-04-01

    The S. Vicente Canyon is located in the Gulf of Cadiz (GoC), in the Northwest Atlantic Ocean, offshore SW Iberia. The GoC is located between the Straits of Gibraltar (5°W) and the Gorringe Bank (12°W) and 34°N and 38°N. It is situated in a complex geodynamic setting at the Eastern tip of the Azores-Gibraltar fracture zone, part of the convergent plate boundary between Northwest Africa and Southwest Eurasia. There are several evidences for active tectonics, moderate seismic activity and some events of high magnitude for earthquakes and tsunamis (like the 1755 and 1969 events). The canyon lies between two of the most prominent faults in the GoC: the Marquês de Pombal and the Horseshoe thrust faults. Since the 1990's nineteen multibeam swath bathymetry surveys were carried out in the Gulf of Cadiz and a compilation of the data was produced adding up to more than 180.000km2. This 100m cellsize compilation allowed a detailed analysis of the seafloor of the GoC including the South and Western Portuguese margins and is in the junction point between these two margins that the S. Vicente Canyon (SVC) is located. The bathymetry data here presented is derived from the MATESPRO survey from 2004, the first large multibeam swath bathymetry survey in the area. The canyon has a general staircase-like shape with the upper and lower parts trending NE-SW and the middle sector with an NNE-SSW direction. The SVC head lies very close to the shore, at depths shallower than 70m and runs towards the Horseshoe Abyssal Plain (HAP) at around 4900m depth. It extends for more than 120km (larger than any other submarine canyon on the GoC) and can reach up to 20 km in width. The walls are steep and frequently affected by mass wasting scars and also strongly incised by minor contributories valleys. A major kink is present where the canyon diverts about 60° from its upper course, as well as several minor ones and some knickpoints are also identifiable across its entire track. Across its

  18. Stratigraphic reconstruction of two debris avalanche deposits at Colima Volcano (Mexico): Insights into pre-failure conditions and climate influence

    Science.gov (United States)

    Roverato, M.; Capra, L.; Sulpizio, R.; Norini, G.

    2011-10-01

    Throughout its history, Colima Volcano has experienced numerous partial edifice collapses with associated emplacement of debris avalanche deposits of contrasting volume, morphology and texture. A detailed stratigraphic study in the south-eastern sector of the volcano allowed the recognition of two debris avalanche deposits, named San Marcos (> 28,000 cal yr BP, V = ~ 1.3 km 3) and Tonila (15,000-16,000 cal yr BP, V = ~ 1 km 3 ). This work sheds light on the pre-failure conditions of the volcano based primarily on a detailed textural study of debris avalanche deposits and their associated pyroclastic and volcaniclastic successions. Furthermore, we show how the climate at the time of the Tonila collapse influenced the failure mechanisms. The > 28,000 cal yr BP San Marcos collapse was promoted by edifice steep flanks and ongoing tectonic and volcanotectonic deformation, and was followed by a magmatic eruption that emplaced pyroclastic flow deposits. In contrast, the Tonila failure occurred just after the Last Glacial Maximum (22,000-18,000 cal BP) and, in addition to the typical debris avalanche textural characteristics (angular to sub-angular clasts, coarse matrix, jigsaw fit) it shows a hybrid facies characterized by debris avalanche blocks embedded in a finer, homogenous and partially cemented matrix, a texture more characteristic of debris flow deposits. The Tonila debris avalanche is directly overlain by a 7-m thick hydromagmatic pyroclastic succession. Massive debris flow deposits, often more than 10 m thick and containing large amounts of tree trunk logs, represent the top unit in the succession. Fluvial deposits also occur throughout all successions; these represent periods of highly localized stream reworking. All these lines of evidence point to the presence of water in the edifice prior to the Tonila failure, suggesting it may have been a weakening factor. The Tonila failure appears to represent an anomalous event related to the particular climatic

  19. Volcanic activity in the Acambay Graben: a < 25 Ka subplinian eruption from the Temascalcingo volcano and implications for volcanic hazard.

    Science.gov (United States)

    Pedrazzi, Dario; Aguirre Díaz, Gerardo; Sunyé Puchol, Ivan; Bartolini, Stefania; Geyer, Adelina

    2016-04-01

    The Trans-Mexican Volcanic Belt (TMVB) contains a large number of stratovolcanoes, some well-known, as Popocatepetl, Iztaccihuatl, Nevado de Toluca, or Colima and many others of more modest dimensions that are not well known but constitute the majority in the TMVB. Such volcanoes are, for example, Tequila, San Juan, Sangangüey, Cerro Culiacán, Cerro Grande, El Zamorano, La Joya, Palo Huerfano, Jocotitlán, Altamirano and Temascalcingo, among many others. The Temascalcingo volcano (TV) is an andesitic-dacitic stratovolcano located in the Trans-Mexican Volcanic Belt (TMVB) at the eastern part of the Acambay Graben (northwest portion of Estado de México). The TV is composed mainly by dacitic, porphyritic lavas, block and ash deposits and subordinate pumice fall deposits and ignimbrites (Roldán-Quintana et al., 2011). The volcanic structure includes a summit caldera that has a rectangular shape, 2.5×3.5 km, with the largest side oriented E-W, parallel to major normal faults affecting the edifice. The San Mateo Pumice eruption is one of the greatest paroxysmal episodes of this volcano with pumice deposits mainly exposed at the scarp of the Acambay-Tixmadeje fault and at the northern and northeastern flanks of TV. It overlies a paleosol dated at 25 Ka. A NE-trending dispersion was obtained from field data covering an area of at least 80 km2. These deposits overlie older lava flows and mud flows and are discontinuously covered and eroded by younger reworked deposits of Temascalcingo volcano. This event represents a highly explosive phase that generated a relatively thick and widespread pumice fallout deposit that may occur again in future eruptions. A similar eruption today would have a significantly impact in the region, overall due to the fact that there has been no systematic assessment of the volcanic hazard in any of the studies that have been conducted so far in the area. So, this is a pending and urgent subject that must be tackled without delay. Financed by

  20. The volcanoes and clouds of Venus

    Science.gov (United States)

    Prinn, R. G.

    1985-03-01

    One of the earth's most intriguing features is its geologic activity. However, volcanic eruptions have not been observed on any other body in the solar system, except for a detection of such eruptions on Jupiter's moon Io. As in a number of respects Venus is similar to earth, questions arise regarding the presence of active volcanoes on Venus. In the past, the study of such questions was made difficult or impossible by the layer of clouds surrounding the Venusian surface. In the past half decade the situation has changed. These changes are mainly related to studies based on a utilization of radio waves and microwaves which can pass through the cloud layer. Such studies have been conducted with the aid of terrestrial radio telescopes, the Pioneer Venus satellite orbiting Venus, and two Russian spacecraft. The results of these studies are discussed in detail. It appears that there are active volcanoes on Venus. This volcanism is a key link in the chemical cycle which produces the clouds. The levels of volcanic activity on Venus and earth seem to be roughly comparable.

  1. Volcano-ice interactions on Mars

    Science.gov (United States)

    Allen, C. C.

    1979-01-01

    Central volcanic eruptions beneath terrestrial glaciers have built steep-sided, flat-topped mountains composed of pillow lava, glassy tuff, capping flows, and cones of basalt. Subglacial fissure eruptions produced ridges of similar composition. In some places the products from a number of subglacial vents have combined to form widespread deposits. The morphologies of these subglacial volcanoes are distinctive enough to allow their recognition at the resolutions characteristic of Viking orbiter imagery. Analogs to terrestrial subglacial volcanoes have been identified on the northern plains and near the south polar cap of Mars. The polar feature provides probable evidence of volcanic eruptions beneath polar ice. A mixed unit of rock and ice is postulated to have overlain portions of the northern plains, with eruptions into this ground ice having produced mountains and ridges analogous to those in Iceland. Subsequent breakdown of this unit due to ice melting revealed the volcanic features. Estimated heights of these landforms indicate that the ice-rich unit once ranged from approximately 100 to 1200 m thick.

  2. Monitoring Santorini volcano (Greece) breathing from space

    Science.gov (United States)

    Foumelis, Michael; Trasatti, Elisa; Papageorgiou, Elena; Stramondo, Salvatore; Parcharidis, Issaak

    2013-04-01

    Since its last eruption in 1950, Santorini volcano (Greece) remained in a dormant state. This is also evidenced for the period 1992-2010 by the gradual deflation signal over Nea Kameni as measured by satellite Synthetic Aperture Radar Interferometry (InSAR) with low rates of about 5-6 mm yr-1 as well as by the absence of seismic activity within the caldera. However, at the beginning of 2011 the volcano showed signs of unrest with increased microseismic activity and significant ground uplift, reaching 14 cm within a year (2011 March-2012 March), according to InSAR time-series. ALOS PALSAR data indicate the onset of the phenomenon in early 2010 where an aseismic pre-unrest phase of increased subsidence (1-3 cm) preceded the uplift. Joint inversions of SAR and GPS velocities using spherical and spheroidal magmatic source types indicate their location offshore at about 1 km north of Nea Kameni and between 3.5 and 3.8 km depth. The estimated volume variation rate is 6 × 106 m3 yr-1 to 9 × 106 m3 yr-1. A gradual slowing in the rate of inflation within the first quarter of 2012 is apparent by ENVISAT data, while subsequent observations from RADARSAT-2 confirm the observed trend.

  3. Estudo comparativo e variação sazonal da ictiofauna na zona entremarés do Mar Casado-Guarujá e Mar Pequeno-São Vicente, SP Comparative study and seasonal variations of the ichthyofauna of the surf zone in Mar Casado-Guaruja and Mar Pequeno-São Vicente, SP

    Directory of Open Access Journals (Sweden)

    Alfredo Martins Paiva Filho

    1987-01-01

    Full Text Available Através de arrastos mensais de praia, realizados com rede de calao na região do Mar Casado-Guarujá e Mar Pequeno-São Vicente, SP, de maio de 1984 a maio de 1985, foi capturado um total de 5723 exemplares de peixes pertencentes a 42 espécies. É apresentada uma lista por espécies, ocorrência sazonal e abundancia relativa por área de coleta. Em ambas as áreas poucas especies são dominantes, sendo que no Mar Casado ocorrem Trachinotus carolinus (Carangidae , juvenis de Mugilidae, Harengula clupeola (Clupeidae, Trachinotus falcatus (Carangidae e Eucinostomus melapterus (Gerreidae; no Mar Pequeno, ocorrem juvenis de Mugilidae, Xelomelaniris brasiliensis (Atherinidae, Opisthonema oglinum e Harengula Clupeola (Clupeidae. O Mar Pequeno apresenta maior riqueza de espécies, com maiores valores no numero de indivíduos e na captura por unidade de esforço, aparentemente correlacionados com a temperatura da água que é mais baixa no inverno e mais elevada no verão-outono. O índice de diversidade variou sazonalmente, não parecendo estar relacionado com os parâmetros ambientais.Through a monthly beach seine survey programme carried out in the coastal beach of Mar Casado (Guarujá-SP and in the estuarine beach of Mar Pequeno (São Vicente-SP, from May, 1984 to May, 1985, it was yielded a total of 5723 individuals of 42 species of marine and estuarine fish. A list of species, seasonal occurrence and relative abundances is presented. For each area, we found only five dominant species as: in Mar Casado, Trachinotus carolinus and T. falctus (Carangidae, juveniles of Mugilidae, Harengula clupeola (Clupeidae and Eucinostmus melanopterus (Gerreidae; in Mar Pequeno, juveniles of Mugilidae, Xenomelaniris brasilienses (Atherinidae, Opisthonema oglinum and Harengula clupeola (Clupeidae. In Mar Pequeno we found the greatest richness of species, the highest values of individuals's number, and CPUE, apparently related with water's temperature that are lower

  4. Space Radar Image of Karisoke & Virunga Volcanoes

    Science.gov (United States)

    1994-01-01

    This is a false-color composite of Central Africa, showing the Virunga volcano chain along the borders of Rwanda, Zaire and Uganda. This area is home to the endangered mountain gorillas. The image was acquired on October 3, 1994, on orbit 58 of the space shuttle Endeavour by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR). In this image red is the L-band (horizontally transmitted, vertically received) polarization; green is the C-band (horizontally transmitted and received) polarization; and blue is the C-band (horizontally transmitted and received) polarization. The area is centered at about 2.4 degrees south latitude and 30.8 degrees east longitude. The image covers an area 56 kilometers by 70 kilometers (35 miles by 43 miles). The dark area at the top of the image is Lake Kivu, which forms the border between Zaire (to the right) and Rwanda (to the left). In the center of the image is the steep cone of Nyiragongo volcano, rising 3,465 meters (11,369 feet) high, with its central crater now occupied by a lava lake. To the left are three volcanoes, Mount Karisimbi, rising 4,500 meters (14,800 feet) high; Mount Sabinyo, rising 3,600 meters (12,000 feet) high; and Mount Muhavura, rising 4,100 meters (13,500 feet) high. To their right is Nyamuragira volcano, which is 3,053 meters (10,017 feet) tall, with radiating lava flows dating from the 1950s to the late 1980s. These active volcanoes constitute a hazard to the towns of Goma, Zaire and the nearby Rwandan refugee camps, located on the shore of Lake Kivu at the top left. This radar image highlights subtle differences in the vegetation of the region. The green patch to the center left of the image in the foothills of Karisimbi is a bamboo forest where the mountain gorillas live. The vegetation types in this area are an important factor in the habitat of mountain gorillas. Researchers at Rutgers University in New Jersey and the Dian Fossey Gorilla Fund in London will use this data to produce

  5. Terrestrial Real-Time Volcano Monitoring

    Science.gov (United States)

    Franke, M.

    2013-12-01

    As volcano monitoring involves more and different sensors from seismic to GPS receivers, from video and thermal cameras to multi-parameter probes measuring temperature, ph values and humidity in the ground and the air, it becomes important to design real-time networks that integrate and leverage the multitude of available parameters. In order to do so some simple principles need to be observed: a) a common time base for all measurements, b) a packetized general data communication protocol for acquisition and distribution, c) an open and well documented interface to the data permitting standard and emerging innovative processing, and d) an intuitive visualization platform for scientists and civil defense personnel. Although mentioned as simple principles, the list above does not necessarily lead to obvious solutions or integrated systems, which is, however, required to take advantage of the available data. Only once the different data streams are put into context to each other in terms of time and location can a broader view be obtained and additional information extracted. The presentation is a summary of currently available technologies and how they can achieve the goal of an integrated real-time volcano monitoring system. A common time base are standard for seismic and GPS networks. In different projects we extended this to video feeds and time-lapse photography. Other probes have been integrated with vault interface enclosures (VIE) as used in the Transportable Array (TA) of the USArray. The VIE can accommodate the sensors employed in volcano monitoring. The TA has shown that Antelope is a versatile and robust middleware. It provides the required packetized general communication protocol that is independent from the actual physical communication link leaving the network design to adopt appropriate and possible hybrid solutions. This applies for the data acquisition and the data/information dissemination providing both a much needed collaboration platform, as

  6. Igneous Petrogenesis of Tequila Volcano, Western Mexico

    Science.gov (United States)

    Vázquez-Duarte, A.; Gómez-Tuena, A.; Díaz-Bravo, B.

    2011-12-01

    Tequila volcano belongs to a Quaternary volcanic chain that runs in parallel to the Middle American Trench, but that have been constructed within the so-called Tepic-Zacoalco rift: an extensional tectonic structure that has been active for the past 3.5 Ma. This unusual tectonic setting, and the existence of a high-resolution stratigraphy for the Tequila Volcanic Field (Lewis-Kenedi, 2005, Bull Volcanol), provide an excellent opportunity to study andesite petrogenesis. New comprehensive geochemical data allow the recognition of at least four different magmatic series around Tequila: 1) The Santa Rosa intraplate basalts (1.0 - 0.2 Ma), a volcanic plateau constructed along the Santiago River Fault north of Tequila volcano. These Na-alkaline basalts are olivine-phyric, have negligible subduction signatures (Ba/Nb= 11.75 - 49.36), and display Sr-Nd-Pb isotopic compositions that correlate with fractionation indexes, probably indicating melt-crust interactions. 2) A group of vitreous domes and flows of dacitic to rhyolitic compositions, mostly contemporaneous to the Santa Rosa basalts, that were emplaced on the periphery of Tequila volcano. These rocks can have very low Sr and Eu contents but their isotopic compositions are remarkably constant and similar to the Santa Rosa basalts, probably indicating a genetic link through low pressure fractionation in the stability field of plagioclase. 3) The main edifice of Tequila volcano (~0.2 Ma) is made of two pyroxene andesites and dacites with strong subduction signatures (Ba/Nb= 53-112), that inversely correlate with MgO contents, but that follow a diverging evolutionary trend as the rest of the sequences. The isotopic compositions of Tequila main edifice can extend to slightly more enriched values, but do not correlate with fractionation indexes, thus indicating provenance from a different source. 4) The youngest activity on Tequila volcano (~0.09 Ma) is represented by amphibole bearing andesites that erupted through the

  7. Ground survey of active Central American volcanoes in November - December 1973

    Science.gov (United States)

    Stoiber, R. E. (Principal Investigator); Rose, W. I., Jr.

    1974-01-01

    The author has identified the following significant results. Thermal anomalies at two volcanoes, Santiaguito and Izalco, have grown in size in the past six months, based on repeated ground survey. Thermal anomalies at Pacaya volcano have became less intense in the same period. Large (500 m diameter) thermal anomalies exist at 3 volcanoes presently, and smaller scale anomalies are found at nine other volcanoes.

  8. A geologic and anthropogenic journey from the Precambrian to the new energy economy through the San Juan volcanic field

    Science.gov (United States)

    Yager, Douglas B.; Burchell,; Johnson, Raymond H.

    2010-01-01

    The San Juan volcanic field comprises 25,000 km2 of intermediate composition mid-Tertiary volcanic rocks and dacitic to rhyolitic calderas including the San Juan–Uncompahgre and La Garita caldera-forming super-volcanoes. The region is famous for the geological, ecological, hydrological, archeological, and climatological diversity. These characteristics supported ancestral Puebloan populations. The area is also important for its mineral wealth that once fueled local economic vitality. Today, mitigating and/or investigating the impacts of mining and establishing the region as a climate base station are the focuses of ongoing research. Studies include advanced water treatment, the acid neutralizing capacity (ANC) of propylitic bedrock for use in mine-lands cleanup, and the use of soil amendments including biochar from beetle-kill pines. Biochar aids soil productivity and revegetation by incorporation into soils to improve moisture retention, reduce erosion, and support the natural terrestrial carbon sequestration (NTS) potential of volcanic soils to help offset atmospheric CO2 emissions. This field trip will examine the volcano-tectonic and cultural history of the San Juan volcanic field as well as its geologic structures, economic mineral deposits and impacts, recent mitigation measures, and associated climate research. Field trip stops will include a visit to (1) the Summitville Superfund site to explore quartz alunite-Au mineralization, and associated alteration and new water-quality mitigation strategies; (2) the historic Creede epithermal-polymetallic–vein district with remarkably preserved resurgent calderas, keystone-graben, and moat sediments; (3) the historic mining town of Silverton located in the nested San Juan–Silverton caldera complex that exhibits base-metal Au-Ag mineralization; and (4) the site of ANC and NTS studies. En route back to Denver, we will traverse Grand Mesa, a high NTS area with Neogene basalt-derived soils and will enjoy a soak

  9. San Pascual (1991) Año XXVIII, n. 284

    OpenAIRE

    Pérez, María Dolores, O.S.C. (Directora)

    1991-01-01

    Editorial. Documento de la Santa sede. San Pascual y la Virgen de Gracia. Nueva revista dedicada a San Pascual. Adoración nocturna. Desde la clausura. Vida en el santuario de San Pascual. Orden Franciscana. Coplas a San Pascual Baylón. San Pascual en el arte. Rutas pascualinas. A l'ombra del claustre.

  10. San Pascual (1991) Año XXVIII, n. 284

    OpenAIRE

    Pérez, María Dolores, O.S.C. (Directora)

    1991-01-01

    Editorial. Documento de la Santa sede. San Pascual y la Virgen de Gracia. Nueva revista dedicada a San Pascual. Adoración nocturna. Desde la clausura. Vida en el santuario de San Pascual. Orden Franciscana. Coplas a San Pascual Baylón. San Pascual en el arte. Rutas pascualinas. A l'ombra del claustre.

  11. Microtremor study of Gunung Anyar mud volcano, Surabaya, East Java

    Science.gov (United States)

    Syaifuddin, Firman; Bahri, Ayi Syaeful; Lestari, Wien; Pandu, Juan

    2016-05-01

    The existence of mud volcano system in East Java is known from the ancient period, especially in Surabaya. Gunung Anyar mud volcano is one of the mud volcano system manifestation was appeared close to the residence. Because of this phenomenon we have to learn about the impact of this mud volcano manifestation to the neighbourhood. The microtremor study was conducted to evaluate the possible influence effect of the mud volcano to the environment and get more information about the subsurface condition in this area. Microtremor is one of the geophysical methods which measure the natural tremor or vibration of the earth, the dominant frequency of the tremor represent thickness of the soft sediment layer overlay above the bed rock or harder rock layer beneath our feet. In this study 90 stations was measured to record the natural tremor. The result from this study shows the direct influenced area of this small mud volcano system is close to 50m from the centre of the mud volcano and bed rock of this area is range between 66 to 140 meter.

  12. Acoustic scattering from mud volcanoes and carbonate mounds.

    Science.gov (United States)

    Holland, Charles W; Weber, Thomas C; Etiope, Giuseppe

    2006-12-01

    Submarine mud volcanoes occur in many parts of the world's oceans and form an aperture for gas and fluidized mud emission from within the earth's crust. Their characteristics are of considerable interest to the geology, geophysics, geochemistry, and underwater acoustics communities. For the latter, mud volcanoes are of interest in part because they pose a potential source of clutter for active sonar. Close-range (single-interaction) scattering measurements from a mud volcano in the Straits of Sicily show scattering 10-15 dB above the background. Three hypotheses were examined concerning the scattering mechanism: (1) gas entrained in sediment at/near mud volcano, (2) gas bubbles and/or particulates (emitted) in the water column, (3) the carbonate bio-construction covering the mud volcano edifice. The experimental evidence, including visual, acoustic, and nonacoustic sensors, rules out the second hypothesis (at least during the observation time) and suggests that, for this particular mud volcano the dominant mechanism is associated with carbonate chimneys on the mud volcano. In terms of scattering levels, target strengths of 4-14 dB were observed from 800 to 3600 Hz for a monostatic geometry with grazing angles of 3-5 degrees. Similar target strengths were measured for vertically bistatic paths with incident and scattered grazing angles of 3-5 degrees and 33-50 degrees, respectively.

  13. Species - San Diego Co. [ds121

    Data.gov (United States)

    California Department of Resources — This is the Biological Observation Database point layer representing baseline observations of sensitive species (as defined by the MSCP) throughout San Diego County....

  14. Development of volcano monitoring technique using repeating earthquakes observed by the Volcano Observation Network of NIED

    Science.gov (United States)

    Kohno, Y.; Ueda, H.; Kimura, H.; Nagai, M.; Miyagi, Y.; Fujita, E.; Kozono, T.; Tanada, T.

    2012-12-01

    After the Grate East Japan Earthquake (M9.0) on March 11, 2011, the M6.4 earthquake occurred beneath Mt. Fuji on March 15, 2011. Although the hypocenter seemed to be very close to an assumed magma chamber of Fuji volcano, no anomalies in volcanic activity have been observed until August 2012. As an example, after the M6.1 earthquake occurred in 1998 at southwest of Iwate volcano, a change of seismic velocity structure (e.g. Nishimura et al., 2000) was observed as well as active seismicity and crustal deformation. It had affected waveforms of repeating earthquakes occurring at a plate subduction zone, that is, the waveform similarities were reduced just after the earthquake due to upwelling of magma. In this study, first we analyzed for Mt. Fuji where such changes are expected by the occurrence of the earthquake to try to develop a tool for monitoring active volcanoes using the Volcano Observation network (V-net) data. We used seismic waveform data of repeating earthquakes observed by short period seismometers of V-net and the High Sensitivity Seismograph Network Japan (Hi-net) stations near Fuji volcano after 2007. The seismic data were recorded with a sampling rate of 100 Hz, and we applied 4-8 Hz band pass filter to reduce noise. The repeating earthquakes occurred at the plate subduction zone and their catalog is compiled by Hi-net data (Kimura et al., 2006). We extracted repeating earthquake groups that include earthquakes before and after the M6.4 earthquake on March 15, 2011. A waveform of the first event of the group and waveforms of the other events are compared and calculated cross-correlation coefficients. We adjusted P wave arrivals of each event and calculate the coefficients and lag times of the latter part of the seismic waves with the time window of 1.25 s. We searched the best fit maximizing the cross-correlation coefficients with 0.1 s shift time at each time window. As a result we found three remarkable points at this time. [1] Comparing lag times

  15. Volcano instability induced by strike-slip faulting

    Science.gov (United States)

    Lagmay, A. M. F.; van Wyk de Vries, B.; Kerle, N.; Pyle, D. M.

    2000-09-01

    Analogue sand cone experiments were conducted to study instability generated on volcanic cones by basal strike-slip movement. The results of the analogue models demonstrate that edifice instability may be generated when strike-slip faults underlying a volcano move as a result of tectonic adjustment. This instability occurs on flanks of the volcano above the strike-slip shear. On the surface of the volcano this appears as a pair of sigmoids composed of one reverse and one normal fault. In the interior of the cone the faults form a flower structure. Two destabilised regions are created on the cone flanks between the traces of the sigmoidal faults. Bulging, intense fracturing and landsliding characterise these unstable flanks. Additional analogue experiments conducted to model magmatic intrusion show that fractures and faults developed within the volcanic cone due to basal strike-slip motions strongly control the path of the intruding magma. Intrusion is diverted towards the areas where previous development of reverse and normal faults have occurred, thus causing further instability. We compare our model results to two examples of volcanoes on strike-slip faults: Iriga volcano (Philippines), which underwent non-magmatic collapse, and Mount St. Helens (USA), where a cryptodome was emplaced prior to failure. In the analogue and natural examples, the direction of collapse takes place roughly parallel to the orientation of the underlying shear. The model presented proposes one mechanism for strike-parallel breaching of volcanoes, recently recognised as a common failure direction of volcanoes found in regions with transcurrent and transtensional deformation. The recognition of the effect of basal shearing on volcano stability enables prediction of the likely direction of eventual flank failure in volcanoes overlying strike-slip faults.

  16. Turtles to Terabytes: The Ongoing Revolution in Volcano Geodesy

    Science.gov (United States)

    Dzurisin, D.

    2015-12-01

    Volcano geodesy is in the midst of a revolution. GPS and InSAR, together with extensive ground-based sensor networks, have enabled major advances in understanding how and why volcanoes deform. Surveying techniques that produced a few bytes of information per benchmark per year have been replaced by continuously operating deformation networks and imaging radar satellites that generate terabytes of data at resolutions unattainable only a few decades ago. These developments have enabled more detailed assessments of volcano hazards, more accurate forecasts of volcanic activity, and better insights into how volcanoes behave over a variety of spatial and temporal scales. Forty years ago, repeated leveling surveys showed that the floor of the Yellowstone caldera had risen more than 70 cm in the past 5 decades. Today a network of GPS stations tracks surface movements continuously with millimeter-scale accuracy and the entire deformation field is imaged frequently by a growing number of SAR satellites, revealing a far more complex style of deformation than was recognized previously. At Mount St. Helens, the 1980-1986 eruption taught us that a seemingly quiescent volcano can suddenly become overtly restless, and that accurate eruption predictions are possible at least in some limited circumstances given sufficient observations. The lessons were revisited during the volcano's 2004-2008 eruption, during which a new generation of geodetic sensors and methods detected a range of co-eruptive changes that enabled new insights into the volcano's magma storage and transport system. These examples highlight volcano deformation styles and scales that were unknown just a few decades ago but now have been revealed by a growing number of data types and modeling methods. The rapid evolution that volcano geodesy is currently experiencing provides an ongoing challenge for geodesists, while also demonstrating that geodetic unrest is common, widespread, and illuminating. Vive la révolution!

  17. 33 CFR 165.1102 - Security Zone; Naval Base Point Loma; San Diego Bay, San Diego, CA.

    Science.gov (United States)

    2010-07-01

    ... Loma; San Diego Bay, San Diego, CA. 165.1102 Section 165.1102 Navigation and Navigable Waters COAST... Guard District § 165.1102 Security Zone; Naval Base Point Loma; San Diego Bay, San Diego, CA. (a) Location. The following area is a security zone: The water adjacent to the Naval Base Point Loma, San Diego...

  18. The geology and petrology of Volcán San Juan (Nayarit, México) and the compositionally zoned Tepic Pumice

    Science.gov (United States)

    Luhr, James F.

    2000-01-01

    Volcán San Juan is the westernmost Quaternary composite volcano in the Mexican Volcanic Belt. Its activity is divided into three stages of decreasing eruptive volume. During stage-1 activity, the main cone of San Juan and the adjacent Cerro Alto grew to a combined volume of ˜60 km 3 through eruption of hornblende-bearing andesites, dacites, and rhyodacites. Stage 1 included explosive eruptions of hornblende-dacite and an andesite dated at 33,750 a (years ago) and 23,010 a. Stage-2 activity involved a major Plinian eruption 14,770 a that produced the hypersthene-hornblende-bearing, compositionally zoned, rhyodacitic-andesitic Tepic Pumice and led to formation of an oval-shaped caldera 4×1 km in diameter. Tepic, the capital city of Nayarit State, with a population of ˜250,000, lies at the NE foot of Volcán San Juan. This location was buried under 2-9 m of rhyodacitic pumice-fall deposits from the Tepic Pumice eruption. Erosion has since removed virtually all exposures of Tepic Pumice >15 km from the caldera. The estimated volume of erupted tephra is 5.6 km 3, equivalent to 1.2 km 3 of magma. Modeling of the eruption dynamics indicates that as the eruption evolved the column height increased from ˜15 km to ˜24 km and maximum mass discharge rate increased from ˜3×10 6 kg/s to ˜6×10 7 kg/s. During stage-3 activity, a hornblende-andesitic lava dome partially filled the caldera and sent block lava flows down the north slope of the cone; total erupted volume was ˜0.55 km 3. Compared to other composite volcanoes of the western Mexican Volcanic Belt, the products from San Juan have the highest Sr contents and the lowest Rb, Y, Yb, and Lu contents, resulting in high La/Yb and Sr/Y, with low Rb/Sr. These observations indicate a strong slab-melt component at San Juan, consistent with its proximity to the Middle America Trench where young, hot lithosphere is subducting. The San Juan andesites, dacites, and rhyodacites also have relatively high 87Sr/ 86Sr, 206Pb/ 204

  19. 77 FR 57494 - Safety Zone; Fleet Week Fireworks, San Francisco Bay, San Francisco, CA

    Science.gov (United States)

    2012-09-18

    ... SECURITY Coast Guard 33 CFR Part 165 Safety Zone; Fleet Week Fireworks, San Francisco Bay, San Francisco... will enforce the safety zone for the Fleet Week Fireworks in the Captain of the Port, San Francisco...'' W (NAD83) for the Fleet Week Fireworks in 33 CFR 165.1191, Table 1, item number 25. This safety...

  20. 78 FR 10062 - Safety Zone; Sea World San Diego Fireworks, Mission Bay; San Diego, CA

    Science.gov (United States)

    2013-02-13

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Sea World San Diego Fireworks, Mission Bay; San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone on the navigable waters of Mission Bay in support of the Sea World San Diego...

  1. 77 FR 42649 - Safety Zone: Sea World San Diego Fireworks, Mission Bay; San Diego, CA

    Science.gov (United States)

    2012-07-20

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone: Sea World San Diego Fireworks, Mission Bay; San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is... rule, call or email Petty Officer David Varela, Waterways Management, U.S. Coast Guard Sector San Diego...

  2. 77 FR 60899 - Safety Zone; Sea World San Diego Fireworks, Mission Bay; San Diego, CA

    Science.gov (United States)

    2012-10-05

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Sea World San Diego Fireworks, Mission Bay; San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone on the navigable waters of Mission Bay in support of the Sea World San Diego...

  3. 77 FR 42638 - Safety Zone: Sea World San Diego Fireworks, Mission Bay; San Diego, CA

    Science.gov (United States)

    2012-07-20

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone: Sea World San Diego Fireworks, Mission Bay; San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone on the navigable waters of Mission Bay in support of the Sea World San Diego...

  4. 78 FR 29025 - Sea World San Diego Fireworks 2013 Season; Mission Bay, San Diego, CA

    Science.gov (United States)

    2013-05-17

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Sea World San Diego Fireworks 2013 Season; Mission Bay, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a safety zone on the navigable waters of Mission Bay in support of the Sea World San Diego...

  5. 76 FR 46352 - Approval of Noise Compatibility Program for San Diego International, San Diego, CA

    Science.gov (United States)

    2011-08-02

    ... Federal Aviation Administration Approval of Noise Compatibility Program for San Diego International, San Diego, CA AGENCY: Federal Aviation Administration, DOT. ACTION: Notice . SUMMARY: The Federal Aviation Administration (FAA) announces its findings on the noise compatibility program submitted by San Diego Regional...

  6. 78 FR 77597 - Safety Zone; Allied PRA-Solid Works, San Diego Bay; San Diego, CA

    Science.gov (United States)

    2013-12-24

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Allied PRA-Solid Works, San Diego Bay; San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a temporary safety zone on the navigable waters of the San Diego Bay in support of a fireworks...

  7. Mount Meager Volcano, Canada: a Case Study for Landslides on Glaciated Volcanoes

    Science.gov (United States)

    Roberti, G. L.; Ward, B. C.; van Wyk de Vries, B.; Falorni, G.; Perotti, L.; Clague, J. J.

    2015-12-01

    Mount Meager is a strato-volcano massif in the Northern Cascade Volcanic Arc (Canada) that erupted in 2350 BP, the most recent in Canada. To study the stability of the Massif an international research project between France ( Blaise Pascal University), Italy (University of Turin) and Canada (Simon Fraser University) and private companies (TRE - sensing the planet) has been created. A complex history of glacial loading and unloading, combined with weak, hydrothermally altered rocks has resulted in a long record of catastrophic landslides. The most recent, in 2010 is the third largest (50 x 106 m3) historical landslide in Canada. Mount Meager is a perfect natural laboratory for gravity and topographic processes such as landslide activity, permafrost and glacial dynamics, erosion, alteration and uplift on volcanoes. Research is aided by a rich archive of aerial photos of the Massif (1940s up to 2006): complete coverage approximately every 10 years. This data set has been processed and multi-temporal, high resolution Orthophoto and DSMs (Digital Surface Models) have been produced. On these digital products, with the support on field work, glacial retreat and landslide activity have been tracked and mapped. This has allowed for the inventory of unstable areas, the identification of lava flows and domes, and the general improvement on the geologic knowledge of the massif. InSAR data have been used to monitor the deformation of the pre-2010 failure slope. It will also be used to monitor other unstable slopes that potentially can evolve to catastrophic collapses of up to 1 km3 in volume, endangering local communities downstream the volcano. Mount Meager is definitively an exceptional site for studying the dynamics of a glaciated, uplifted volcano. The methodologies proposed can be applied to other volcanic areas with high erosion rates such as Alaska, Cascades, and the Andes.

  8. New Hypocenter Relocation Results From Volcano-Tectonic Events (1995-2006) at Popocatepetl Volcano, Mexico

    Science.gov (United States)

    Berger, P.; Nava, F. A.; Valdes-Gonzalez, C.

    2008-12-01

    Popocatepetl, one of the most active strato-volcanoes in Mexico, started a fumarolic and seismic reactivation in December 1994. New hypocenter relocation results have been calculated for some 1,800 volcano-tectonic (VT) events recorded by the seismic network operating at Popocatepetl during 1995-2006, and previously located by the National Center for Disasters Prevention (CENAPRED). We used two location programs to determine hypocenter relocation. One is a recently developed genetic algorithm program, Disloca, which adjusts the differences in arrival times between the recording seismic stations. The second is HypoDD, which uses the double difference earthquake location algorithm. Disloca allowed evaluation of station corrections, plus location of non-clustered hypocenters, while HypoDD refined the locations of clustered ones. Thus, for a given velocity model, hypocenters of clustered events varied slightly depending on the location program. For both programs, four different crustal velocity models were used, two of which include a low velocity zone (LVZ) below 6 km depth. This LVZ represents the presence of magma, which has been suggested to exist at this depth. The spatial distribution of the relocated hypocenters varies from one model to another, but a carefully considered combination of features common to the four distributions, allows a new characterization of the VT activity at Popocatepetl. The distribution of the relocated hypocenters found in this study differs from that of former investigations at Popocatépetl, and gives new insights into the volcano's structures. Hypocenters occur mainly above 10 km depth, with a horizontal range of about 5 km. Features of the spatial distribution allow a tentative interpretation of several internal volcanic structures. Chief among these are branched dike complexes and different sized zones free of volcano-tectonic events, which are in turn surrounded by zones of magma-rock interaction, as indicated by the presence of

  9. The volcano in a gravel pit: Volcano monitoring meets experimental volcanology

    Science.gov (United States)

    Kueppers, U.; Alatorre-Ibargüengoitia, M. A.; Hort, M.; Kremers, S.; Meier, K.; Scarlato, P. G.; Scheu, B.; Taddeucci, J.; Wagner, R.; Walk, F.; Dingwell, D. B.

    2012-04-01

    Volcanic eruptions are an inevitable natural threat. During explosive eruptions, gas and pyroclasts are ejected at high speed over variable time spans and at variable intensity. As magma fragmentation inside a volcanic edifice defies direct observation, our mechanistic and quantitative understanding of the syn-eruptive processes is still incomplete. In an attempt to bridge this gap, we used a supra-disciplinary approach and combined experimental volcanology and volcano monitoring devices. We performed 34 field-based fragmentation experiments using cylindrical samples, drilled from natural volcanic rock samples. Decompression and particle ejection were monitored with (1) Doppler Radar (DR), (2) high-speed and high-definition cameras, (3) high-speed thermal camera, (4) acoustic and infrasound sensors and (5) pressure transducers. The experiments were performed at controlled sample porosity (25 to 75 vol.%) and size (60 mm height and 25 mm and 60 mm diameter, respectively), confinement geometry, applied pressure (4 to 18 MPa) and temperature (25 and 850 °C). We present how the velocity of the ejected pyroclasts was measured by and evaluated for the different approaches and how it was affected by the experimental conditions and sample characteristics. We show that all deployed instruments successfully measured the pyroclast ejection, giving coherent results of up to 130 m/s. Close and high-resolution volcano monitoring, spiced with results from our experiments, will allow for "calibrating volcanoes". An enhanced understanding of the pressurisation state of a volcano is an essential factor in ballistic hazard evaluation and eruption energy estimation and will contribute to adequate risk mitigation.

  10. Muon imaging of volcanoes with Cherenkov telescopes

    Science.gov (United States)

    Carbone, Daniele; Catalano, Osvaldo; Cusumano, Giancarlo; Del Santo, Melania; La Parola, Valentina; La Rosa, Giovanni; Maccarone, Maria Concetta; Mineo, Teresa; Pareschi, Giovanni; Sottile, Giuseppe; Zuccarello, Luciano

    2017-04-01

    The quantitative understanding of the inner structure of a volcano is a key feature to model the processes leading to paroxysmal activity and, hence, to mitigate volcanic hazards. To pursue this aim, different geophysical techniques are utilized, that are sensitive to different properties of the rocks (elastic, electrical, density). In most cases, these techniques do not allow to achieve the spatial resolution needed to characterize the shallowest part of the plumbing system and may require dense measurements in active zones, implying a high level of risk. Volcano imaging through cosmic-ray muons is a promising technique that allows to overcome the above shortcomings. Muons constantly bombard the Earth's surface and can travel through large thicknesses of rock, with an energy loss depending on the amount of crossed matter. By measuring the absorption of muons through a solid body, one can deduce the density distribution inside the target. To date, muon imaging of volcanic structures has been mainly achieved with scintillation detectors. They are sensitive to noise sourced from (i) the accidental coincidence of vertical EM shower particles, (ii) the fake tracks initiated from horizontal high-energy electrons and low-energy muons (not crossing the target) and (iii) the flux of upward going muons. A possible alternative to scintillation detectors is given by Cherenkov telescopes. They exploit the Cherenkov light emitted when charged particles (like muons) travel through a dielectric medium, with velocity higher than the speed of light. Cherenkov detectors are not significantly affected by the above noise sources. Furthermore, contrarily to scintillator-based detectors, Cherenkov telescopes permit a measurement of the energy spectrum of the incident muon flux at the installation site, an issue that is indeed relevant for deducing the density distribution inside the target. In 2014, a prototype Cherenkov telescope was installed at the Astrophysical Observatory of Serra

  11. Large-N in Volcano Settings: Volcanosri

    Science.gov (United States)

    Lees, J. M.; Song, W.; Xing, G.; Vick, S.; Phillips, D.

    2014-12-01

    We seek a paradigm shift in the approach we take on volcano monitoring where the compromise from high fidelity to large numbers of sensors is used to increase coverage and resolution. Accessibility, danger and the risk of equipment loss requires that we develop systems that are independent and inexpensive. Furthermore, rather than simply record data on hard disk for later analysis we desire a system that will work autonomously, capitalizing on wireless technology and in field network analysis. To this end we are currently producing a low cost seismic array which will incorporate, at the very basic level, seismological tools for first cut analysis of a volcano in crises mode. At the advanced end we expect to perform tomographic inversions in the network in near real time. Geophone (4 Hz) sensors connected to a low cost recording system will be installed on an active volcano where triggering earthquake location and velocity analysis will take place independent of human interaction. Stations are designed to be inexpensive and possibly disposable. In one of the first implementations the seismic nodes consist of an Arduino Due processor board with an attached Seismic Shield. The Arduino Due processor board contains an Atmel SAM3X8E ARM Cortex-M3 CPU. This 32 bit 84 MHz processor can filter and perform coarse seismic event detection on a 1600 sample signal in fewer than 200 milliseconds. The Seismic Shield contains a GPS module, 900 MHz high power mesh network radio, SD card, seismic amplifier, and 24 bit ADC. External sensors can be attached to either this 24-bit ADC or to the internal multichannel 12 bit ADC contained on the Arduino Due processor board. This allows the node to support attachment of multiple sensors. By utilizing a high-speed 32 bit processor complex signal processing tasks can be performed simultaneously on multiple sensors. Using a 10 W solar panel, second system being developed can run autonomously and collect data on 3 channels at 100Hz for 6 months

  12. Degassing Processes at Persistently Active Explosive Volcanoes

    Science.gov (United States)

    Smekens, Jean-Francois

    Among volcanic gases, sulfur dioxide (SO2) is by far the most commonly measured. More than a monitoring proxy for volcanic degassing, SO 2 has the potential to alter climate patterns. Persistently active explosive volcanoes are characterized by short explosive bursts, which often occur at periodic intervals numerous times per day, spanning years to decades. SO 2 emissions at those volcanoes are poorly constrained, in large part because the current satellite monitoring techniques are unable to detect or quantify plumes of low concentration in the troposphere. Eruption plumes also often show high concentrations of ash and/or aerosols, which further inhibit the detection methods. In this work I focus on quantifying volcanic gas emissions at persistently active explosive volcanoes and their variations over short timescales (minutes to hours), in order to document their contribution to natural SO2 flux as well as investigate the physical processes that control their behavior. In order to make these measurements, I first develop and assemble a UV ground-based instrument, and validate it against an independently measured source of SO2 at a coal-burning power plant in Arizona. I establish a measurement protocol and demonstrate that the instrument measures SO 2 fluxes with explosions with periods of minutes to hours for the past several decades. Semeru produces an average of 21-71 tons of SO2 per day, amounting to a yearly output of 8-26 Mt. Using the Semeru data, along with a 1-D transient numerical model of magma ascent, I test the validity of a model in which a viscous plug at the top of the conduit produces cycles of eruption and gas release. I find that it can be a valid hypothesis to explain the observed patterns of degassing at Semeru. Periodic behavior in such a system occurs for a very narrow range of conditions, for which the mass balance between magma flux and open-system gas escape repeatedly generates a viscous plug, pressurizes the magma beneath the plug, and

  13. Isotopic evolution of Mauna Loa volcano

    Energy Technology Data Exchange (ETDEWEB)

    Kurz, M.D.; Kammer, D.P. (Chemistry Dept., Woods Hole Oceanographic Institution, MA (USA))

    1991-04-01

    In an effort to understand the temporal helium isotopic variations in Mauna Loa volcano, we have measured helium, strontium and lead isotopes in a suite of Mauna Loa lavas that span most of the subaerial eruptive history of the volcano. The lavas range in age from historical flows to Ninole basalt which are thought to be several hundred thousand years old. Most of the samples younger than 30 ka in age (Kau Basalt) are radiocarbon-dated flows, while the samples older than 30 ka are stratigraphically controlled (Kahuku and Ninole Basalt). The data reveal a striking change in the geochemistry of the lavas approximately 10 ka before present. The lavas older than 10 ka are characterized by high {sup 3}He/{sup 4}He ({approx equal} 16-20 times atmospheric), higher {sup 206}Pb/{sup 204}Pb ({approx equal} 18.2), and lower {sup 87}Sr/{sup 86}Sr({approx equal} 0.70365) ratios than the younger Kau samples (having He, Pb and Sr ratios of approximately 8.5 x atmospheric, 18.1 and 0.70390, respectively). The historical lavas are distinct in having intermediate Sr and Pb isotopic compositions with {sup 3}He/{sup 4}He ratios similar to the other young Kau basalt ({approx equal} 8.5 x atmospheric). The isotopic variations are on a shorter time scale (100 to 10,000 years) than has previously been observed for Hawaiian volcanoes, and demonstrate the importance of geochronology and stratigraphy to geochemical studies. The data show consistency between all three isotope systems, which suggests that the variations are not related to magma chamber degassing processes, and that helium is not decoupled from the other isotopes. However, the complex temporal evolution suggests that three distinct mantle sources are required to explain the isotopic data. Most of the Mauna Loa isotopic variations could be explained by mixing between a plume type source, similar to Loihi, and an asthenospheric source with helium isotopic composition close to MORB and elevated Sr isotopic values. (orig./WL).

  14. Multibeam Bathymetry of Haleakala Volcano, Maui

    Science.gov (United States)

    Eakins, B. W.; Robinson, J.

    2002-12-01

    The submarine northeast flank of Haleakala Volcano, Maui was mapped in detail during the summers of 2001 and 2002 by a joint team from the Japan Marine Science and Technology Center (JAMSTEC), Tokyo Institute of Technology, University of Hawaii, and the U.S. Geological Survey. JAMSTEC instruments used included SeaBeam 2112 hull-mounted multibeam sonar (bathymetry and sidescan imagery), manned submersible Shinkai 6500 and ROV Kaiko (bottom video, photographs and sampling of Hana Ridge), gravimeter, magnetometer, and single-channel seismic system. Hana Ridge, Haleakala's submarine east rift zone, is capped by coral-reef terraces for much of its length, which are flexurally tilted towards the axis of the Hawaiian Ridge and delineate former shorelines. Its deeper, more distal portion exhibits a pair of parallel, linear crests, studded with volcanic cones, that suggest lateral migration of the rift zone during its growth. The northern face of the arcuate ridge terminus is a landslide scar in one of these crests, while its southwestern prong is a small, constructional ridge. The Hana slump, a series of basins and ridges analogous to the Laupahoehoe slump off Kohala Volcano, Hawaii, lies north of Hana Ridge and extends down to the Hawaiian moat. Northwest of this slump region a small, dual-crested ridge strikes toward the Hawaiian moat and is inferred to represent a fossil rift zone, perhaps of East Molokai Volcano. A sediment chute along its southern flank has built a large submarine fan with a staircase of contour-parallel folds on its surface that are probably derived from slow creep of sediments down into the moat. Sediments infill the basins of the Hana slump [Moore et al., 1989], whose lowermost layers have been variously back-tilted by block rotation during slumping and flexural loading of the Hawaiian Ridge; the ridges define the outer edges of those down-dropped blocks, which may have subsided several kilometers. An apron of volcaniclastic debris shed from

  15. ANCIENT VOLCANOES AND TECTONIC STRUCTURES OF A RELIEF OF MARS

    Directory of Open Access Journals (Sweden)

    S. G. Pugacheva

    2014-01-01

    Full Text Available In article the basic geological and morphological features of a volcanic relief of a surface of a planet Mars are considered. The volcanic relief of a planet represents relic ancient shield volcanoes, linear forms of volcanic mountains, areal and central lava flooding, radial and concentric breaks. Results of researches of morphology of volcanic and tectonic formations of a relief of Mars are given in article. On materials of shooting of a surface of Mars spacecrafts constructed hypsometric high-rise profiles of volcanoes and average steepness of slopes are defined. The relative age of volcanoes and volcanic plains is estimated on density of shock craters.

  16. Monitoring Thermal Activity of Eastern Anatolian Volcanoes Using MODIS Images

    Science.gov (United States)

    Diker, Caner; Ulusoy, Inan

    2014-05-01

    MODIS (Moderate Resolution Imaging Spectroradiometer) instrument is used for imaging atmosphere, land and ocean with 36 bands. Both AQUA and TERRA platforms acquire 2 images daily (daytime and nighttime). Low temperature anomalies on volcanoes comprise important clues. Low temperature anomalies on Holocene volcanoes of Eastern Anatolia were investigated for these clues using MODIS Land Surface Temperature (LST) images. A total of 16800 daily LST images dated between 2001 and 2012 have been processed using a code written in IDL (Interactive Data Language). Factors like shadow, ice/snow and clouds that are affecting the reflectance data are masked. The mask is derived from MODIS reflectance data state image. Various LST images are calculated: Two nested region of interest (ROI) windows (square/rectangular) have been selected on the images. First is the bigger window, which covers the whole area of the volcano (Total volcano area). Second one is a smaller window which circumference the summit (crater and/or caldera) of the volcano (Summit cone) where thermal output is generally higher when compared to the flanks. Two data sets have been calculated using the ROI's for each volcano. The first set contains daytime and nighttime raw data without any correction. The second set contains topographically corrected images; daytime images are corrected using Cosine and Minnaert methods and nighttime images are corrected using three step normalization method. Calculated surface temperatures (Tmax, Tmin, Tmean) are plotted annually. On Nemrut Volcano as an example, maximum and minimum temperatures are between 26.31oC and -44.87oC on nighttime data for twelve years period. Temperature difference between total volcano area ROI and summit cone ROI are calculated (ΔT). High ΔT indicates that there is an increase of temperature at the summit cone when compared to the total volcano area. STA/LTA (Short Term Average/Long Term Average) filter was applied to maximum temperature and

  17. Progresses in geology and hazards analysis of Tianchi Volcano

    Institute of Scientific and Technical Information of China (English)

    WEI Hai-quan; JIN Bo-lu; LIU Yong-shun

    2004-01-01

    A number of different lahars have been recognized from a systematic survey of a mapping project. The high setting temperature feature of the deposits indicates a relationship between the lahar and the Millennium eruption event of Tianchi Volcano. The lahars caused a dramatic disaster. Recognize of the huge avalanche scars and deposits around Tianchi Volcano imply another highly destructive hazard. Three types of different texture of the avalanche deposits have been recognized. There was often magma mixing processes during the Millennium eruption of Tianchi Volcano, indicating a mixing and co-eruption regime of the eruption.

  18. Volcano-tectonic evolution of the polygenetic Kolumbo submarine volcano/Santorini (Aegean Sea)

    Science.gov (United States)

    Hübscher, Christian; Ruhnau, M.; Nomikou, P.

    2015-01-01

    Here we show for the first time the 3D-structural evolution of an explosive submarine volcano by means of reflection seismic interpretation. Four to five vertically stacked circular and cone-shaped units consisting mainly of volcaniclastics build the Kolumbo underwater volcano which experienced its first eruption > 70 ka ago and its last explosive eruption 1650 AD, 7 km NE of Santorini volcano (southern Aegean Sea). The summed volume of volcaniclastics is estimated to range between 13-22 km3. The entire Kolumbo volcanic complex has a height of ≥ 1 km and a diameter of ≥ 11 km. All volcaniclastic units reveal the same transparent reflection pattern strongly suggesting that explosive underwater volcanism was the prevalent process. Growth faults terminate upwards at the base of volcaniclastic units, thus representing a predictor to an eruption phase. Similarities in seismic reflection pattern between Kolumbo and near-by volcanic cones imply that the smaller cones evolved through explosive eruptions as well. Hence, the central Aegean Sea experienced several more explosive eruptions (≥ 23) than previously assumed, thus justifying further risk assessment. However, the eruption columns from the smaller volcanic cones did not reach the air and- consequently - no sub-aerial pyroclastic surge was created. The Anydros basin that hosts Kolumbo volcanic field opened incrementally NW to SE and parallel to the Pliny and Strabo trends during four major tectonic pulses prior to the onset of underwater volcanism.

  19. Cuartel San Carlos. Yacimiento veterano

    Directory of Open Access Journals (Sweden)

    Mariana Flores

    2007-01-01

    Full Text Available El Cuartel San Carlos es un monumento histórico nacional (1986 de finales del siglo XVIII (1785-1790, caracterizado por sufrir diversas adversidades en su construcción y soportar los terremotos de 1812 y 1900. En el año 2006, el organismo encargado de su custodia, el Instituto de Patrimonio Cultural del Ministerio de Cultura, ejecutó tres etapas de exploración arqueológica, que abarcaron las áreas Traspatio, Patio Central y las Naves Este y Oeste de la edificación. Este trabajo reseña el análisis de la documentación arqueológica obtenida en el sitio, a partir de la realización de dicho proyecto, denominado EACUSAC (Estudio Arqueológico del Cuartel San Carlos, que representa además, la tercera campaña realizada en el sitio. La importancia de este yacimiento histórico, radica en su participación en los acontecimientos que propiciaron conflictos de poder durante el surgimiento de la República y en los sucesos políticos del siglo XX. De igual manera, se encontró en el sitio una amplia muestra de materiales arqueológicos que reseñan un estilo de vida cotidiana militar, así como las dinámicas sociales internas ocurridas en el San Carlos, como lugar estratégico para la defensa de los diferentes regímenes que atravesó el país, desde la época del imperialismo español hasta nuestros días.

  20. Uso de la citometría de flujo en la caracterización de las leucemias agudas en niños del Hospital Universitario San Vicente de Paúl de Medellín

    Directory of Open Access Journals (Sweden)

    Idabely Betancur

    2003-01-01

    Full Text Available El sistema NADPH oxidasa de las células fagocíticas tiene un La determinación de los antígenos que caracterizan las células leucémicas usando citometría de flujo o inmunofenotipificación es importante porque de acuerdo con la clasificación de la enfermedad se elige un tratamiento específico. Esto es fundamental pues la quimioterapia es costosa y produce intensos efectos adversos. Este proyecto, cuyo objetivo general es hallar el inmunofenotipo de nuestros pacientes, ayudará a los clínicos a tomar decisiones acertadas. También compararemos el diagnóstico con los obtenidos por el servicio de citometría de la Clínica las Américas.

  1. Uso de la citometría de flujo en la caracterización de las leucemias agudas en niños del Hospital Universitario San Vicente de Paúl de Medellín

    OpenAIRE

    Idabely Betancur; Natalia Olaya; Lía C. Upegui

    2003-01-01

    El sistema NADPH oxidasa de las células fagocíticas tiene un La determinación de los antígenos que caracterizan las células leucémicas usando citometría de flujo o inmunofenotipificación es importante porque de acuerdo con la clasificación de la enfermedad se elige un tratamiento específico. Esto es fundamental pues la quimioterapia es costosa y produce intensos efectos adversos. Este proyecto, cuyo objetivo general es hallar el inmunofenotipo de nuestros pacientes, ayudará a los clínicos a t...

  2. Santa María de los Arcos de Tricio (La Rioja, Santa Coloma (La Rioja y La Asunción de San Vicente del Valle (Burgos. Tres miembros de una familia arquitectónica

    Directory of Open Access Journals (Sweden)

    Caballero, Luis

    2003-12-01

    Full Text Available There is a series of high medieval buildings scattered around the present-day provinces of Álava, Burgos and La Rioja which form an architectonic family whose main common features are the covering of the apsidal spaces with travertine stone domes propped up on squinches and the recurrent reuse of masonry from Roman stone. The chronological ascription of the different components of this family of buildings is surprisingly varied. Some are held as genuine Roman works while others are dated in the Visigoth period or even later. We believe that this chronological disparateness is historically incomprehensible. The homogeneity of techniques and results must correspond to an equally homogenous chronological/material period which is unlikely to last for so many centuries. We defend high medieval dates (9th-10th century for all the members of this architectonic group, both for technical and historic reasons.Existe una serie de edificios altomedievales repartidos por las actuales provincias de Álava, Burgos y La Rioja que forman una familia arquitectónica cuyos principales rasgos de parentesco son la cubrición de los espacios absidales con cúpulas en piedra toba apeadas en pechinas y la recurrente reutilización de sillería procedente de fábricas romanas. La adscripción cronológica de los diferentes componentes de esta familia edilicia es sorprendentemente variada. Algunos de ellos son tenidos como obras genuinamente romanas mientras que otros se fechan en época visigoda o incluso más allá. Pensamos que esta disparidad cronológica es históricamente incomprensible. La homogeneidad en las técnicas y resultados tiene que responder a un horizonte cronológico/material igualmente homogéneo que difícilmente puede durar tantos siglos. Nosotros defendemos unas fechas altomedievales (siglos IX-X para todos los integrantes de este grupo arquitectónico, tanto por razones técnicas como históricas.

  3. Caracterización clínica y paraclínica de los pacientes con coronariografía normal del Hospital Universitario San Vicente de Paúl, 2000-2003

    Directory of Open Access Journals (Sweden)

    Juan Andrés Delgado Restrepo

    2005-02-01

    Full Text Available Objetivo: describir las características clínicas y paraclínicas de los pacientes con coronariografía normal o sin lesiones significativas. Diseño: descriptivo, retrospectivo. Metodología: se revisaron las historias clínicas y se registraron los hallazgos demográficos y clínicos, el perfil lipídico, el electrocardiograma, la ecocardiografía, la prueba de esfuerzo, la coronariografía y las complicaciones de esta última. Resultados: el 9.5% (167/1.752 de las coronariografías realizadas por sospecha de enfermedad coronaria fueron normales. El 60.5% ocurrieron en mujeres. El 50% de los hombres tuvo dolor precordial típico, en el 53.5% de las mujeres fue atípico. El 73% eran hipertensos y el 7.2%, hipotiroideos. Hubo angina inestable en 61.7%, infarto agudo de miocardio en 22.8% y probable síndrome X cardiovascular en 28.8%. El nivel de triglicéridos fue más bajo en los pacientes con infarto (p<0.001. La frecuencia de complicaciones fue 1.8%. Conclusiones: el 9.5% de las coronariografías realizadas en el HUSVP por sospecha de enfermedad coronaria son normales o sin lesiones significativas. La mayoría son en mujeres, amas de casa, mestizas, hipertensas, con dolor anginoso atípico que nunca han fumado, ni tienen antecedentes de enfermedad coronaria en sus familias.

  4. Propuesta de diseño microcurricular para el área de formación cristiana y valores de la Unidad Educativa “San Vicente de Paúl”

    OpenAIRE

    Romero Paguay, Nancy Germania

    2013-01-01

    In this thesis a non-significant curricular adaptation, ie adaptation in terms of time, activities, methodology, techniques and tools for evaluation, applied only to the area of Christian and Values Training was conducted. En esta tesis se realizó una adaptación curricular no significativa, es decir, una adaptación en cuanto a los tiempos, las actividades, la metodología, las técnicas e instrumentos de evaluación, aplicado exclusivamente para el área de Formación Cristiana y Valores.

  5. Identificación de las causas de reconsulta en consulta externa del Hospital San Vicente Ferrer de Andalucía a través de la estrategia APS

    OpenAIRE

    2012-01-01

    Tesis (Especialista en Administación en Salud). Universidad Católica de Manizales, Facultad de Salud, 2012 La demanda desbordada de los servicios de salud por parte de los usuarios del régimen subsidiado exigen respuestas estratégicas que permitan controlar el uso inadecuado de los servicios de salud hospitalarios. La Atención Primaria en Salud (APS) es una buena herramienta que permite llegar hasta los hogares e identificar de manera real aquellos casos de morbilidad con el fin de posi...

  6. Plan de marketing estratégico para promocionar y comercializar la pitahaya producida por la compañía "San Vicente S.A." en la ciudad de Guayaquil.

    OpenAIRE

    Apráez Orellana, Dennise Alexandra; Proaño Martínez, Ivet Gabriela

    2015-01-01

    La presente investigación pretende crear un plan de marketing estratégico para promocionar y comercializar la Pitahaya en los supermercados y así mismo comprobar que este proyecto es factible basado en los resultados de rentabilidad del mismo. The current investigation pretends to create a strategic marketing plan to promote and commercialize the Pitahaya in the supermarkets and also prove that this project is viable based in the results of profitability.

  7. Downtown revitalization in San Salvador

    OpenAIRE

    Ejeborn, Elisabet; Nedersjö, Julia

    2012-01-01

    The aim of this master’s thesis in spatial planning is to research the conditions in the historic city centre of San Salvador and make a strategy and urban design proposal for the area, but also to investigate the relationship between economic development, public institutions and the public space in this area. The research has been done through literature studies on El Salvador and formal/informal economy, onsite inventory, studies of good examples and interviews with people in the area. In t...

  8. Downtown revitalization in San Salvador

    OpenAIRE

    Ejeborn, Elisabet; Nedersjö, Julia

    2012-01-01

    The aim of this master’s thesis in spatial planning is to research the conditions in the historic city centre of San Salvador and make a strategy and urban design proposal for the area, but also to investigate the relationship between economic development, public institutions and the public space in this area. The research has been done through literature studies on El Salvador and formal/informal economy, onsite inventory, studies of good examples and interviews with people in the area. In t...

  9. Space Radar Image of Kilauea Volcano, Hawaii

    Science.gov (United States)

    1994-01-01

    This is a deformation map of the south flank of Kilauea volcano on the big island of Hawaii, centered at 19.5 degrees north latitude and 155.25 degrees west longitude. The map was created by combining interferometric radar data -- that is data acquired on different passes of the space shuttle which are then overlayed to obtain elevation information -- acquired by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar during its first flight in April 1994 and its second flight in October 1994. The area shown is approximately 40 kilometers by 80 kilometers (25 miles by 50 miles). North is toward the upper left of the image. The colors indicate the displacement of the surface in the direction that the radar instrument was pointed (toward the right of the image) in the six months between images. The analysis of ground movement is preliminary, but appears consistent with the motions detected by the Global Positioning System ground receivers that have been used over the past five years. The south flank of the Kilauea volcano is among the most rapidly deforming terrains on Earth. Several regions show motions over the six-month time period. Most obvious is at the base of Hilina Pali, where 10 centimeters (4 inches) or more of crustal deformation can be seen in a concentrated area near the coastline. On a more localized scale, the currently active Pu'u O'o summit also shows about 10 centimeters (4 inches) of change near the vent area. Finally, there are indications of additional movement along the upper southwest rift zone, just below the Kilauea caldera in the image. Deformation of the south flank is believed to be the result of movements along faults deep beneath the surface of the volcano, as well as injections of magma, or molten rock, into the volcano's 'plumbing' system. Detection of ground motions from space has proven to be a unique capability of imaging radar technology. Scientists hope to use deformation data acquired by SIR-C/X-SAR and future imaging

  10. Antarctic volcanoes: A remote but significant hazard

    Science.gov (United States)

    Geyer, Adelina; Martí, Alex; Folch, Arnau; Giralt, Santiago

    2017-04-01

    Ash emitted during explosive volcanic eruptions can be dispersed over massive areas of the globe, posing a threat to both human health and infrastructures, such as the air traffic. Some of the last eruptions occurred during this decade (e.g. 14/04/2010 - Eyjafjallajökull, Iceland; 24/05/2011-Grímsvötn, Iceland; 05/06/2011-Puyehue-Cordón Caulle, Chile) have strongly affected the air traffic in different areas of the world, leading to economic losses of billions of euros. From the tens of volcanoes located in Antarctica, at least nine are known to be active and five of them have reported volcanic activity in historical times. However, until now, no attention has been paid to the possible social, economical and environmental consequences of an eruption that would occur on high southern latitudes, perhaps because it is considered that its impacts would be minor or local, and mainly restricted to the practically inhabited Antarctic continent. We show here, as a case study and using climate models, how volcanic ash emitted during a regular eruption of one of the most active volcanoes in Antarctica, Deception Island (South Shetland Islands), could reach the African continent as well as Australia and South America. The volcanic cloud could strongly affect the air traffic not only in the region and at high southern latitudes, but also the flights connecting Africa, South America and Oceania. Results obtained are crucial to understand the patterns of volcanic ash distribution at high southern latitudes with obvious implications for tephrostratigraphical and chronological studies that provide valuable isochrones with which to synchronize palaeoclimate records. This research was partially funded by the MINECO grants VOLCLIMA (CGL2015-72629-EXP)and POSVOLDEC(CTM2016-79617-P)(AEI/FEDER, UE), the Ramón y Cajal research program (RYC-2012-11024) and the NEMOH European project (REA grant 34 agreement n° 289976).

  11. Shallow velocity imaging of an active volcano

    Science.gov (United States)

    Fry, B.; Chardot, L.; Jolly, A. D.

    2014-12-01

    We use a linear array of temporary seismometers to derive a shear-wave velocity model of the upper ~1000m of the crater area of White Island, an active volcano in New Zealand. We use noise interferometry to generate dispersion curves and invert these dispersion curves to obtain a layered 1D model. By exploiting the varying interstation distances along the array, we are able to define a strong shallow impedance contrast in the upper 10 meters as well as a depth to 'effective' bedrock at about 100m. We limit the bandwidth of the measured dispersion using a 2-wave cycle approximation and construct a composite dispersion curve. We then invert the dispersion curves with two separate inversion algorithms in an effort to test the validity of using this broadband approach for monitoring active volcanoes. The first method is a non-linear approach and is useful when an a-priori starting model is poorly known or if a velocity inversion is likely. Unfortunately, this type of non-linear inversion is more sensitive to small perturbations in the recovered Green's Functions, which may be due to non-equipartitioning of the wavefield as well as to velocity changes. The second is a linearized and damped LSQR approach which we envision will be more useful for routine monitoring in situations in which the starting model is well defined. In this case, selective regularization can be used to stablize moving time-window inversion. Lastly, our results will be used as input for hydrothermal fluid flow modelling conducted in a concurrent study.

  12. Geomechanical rock properties of a basaltic volcano

    Directory of Open Access Journals (Sweden)

    Lauren N Schaefer

    2015-06-01

    Full Text Available In volcanic regions, reliable estimates of mechanical properties for specific volcanic events such as cyclic inflation-deflation cycles by magmatic intrusions, thermal stressing, and high temperatures are crucial for building accurate models of volcanic phenomena. This study focuses on the challenge of characterizing volcanic materials for the numerical analyses of such events. To do this, we evaluated the physical (porosity, permeability and mechanical (strength properties of basaltic rocks at Pacaya Volcano (Guatemala through a variety of laboratory experiments, including: room temperature, high temperature (935 °C, and cyclically-loaded uniaxial compressive strength tests on as-collected and thermally-treated rock samples. Knowledge of the material response to such varied stressing conditions is necessary to analyze potential hazards at Pacaya, whose persistent activity has led to 13 evacuations of towns near the volcano since 1987. The rocks show a non-linear relationship between permeability and porosity, which relates to the importance of the crack network connecting the vesicles in these rocks. Here we show that strength not only decreases with porosity and permeability, but also with prolonged stressing (i.e., at lower strain rates and upon cooling. Complimentary tests in which cyclic episodes of thermal or load stressing showed no systematic weakening of the material on the scale of our experiments. Most importantly, we show the extremely heterogeneous nature of volcanic edifices that arise from differences in porosity and permeability of the local lithologies, the limited lateral extent of lava flows, and the scars of previous collapse events. Input of these process-specific rock behaviors into slope stability and deformation models can change the resultant hazard analysis. We anticipate that an increased parameterization of rock properties will improve mitigation power.

  13. Submarine volcanoes along the Aegean volcanic arc

    Science.gov (United States)

    Nomikou, Paraskevi; Papanikolaou, Dimitrios; Alexandri, Matina; Sakellariou, Dimitris; Rousakis, Grigoris

    2013-06-01

    The Aegean volcanic arc has been investigated along its offshore areas and several submarine volcanic outcrops have been discovered in the last 25 years of research. The basic data including swath bathymetric maps, air-gun profiles, underwater photos and samples analysis have been presented along the four main volcanic groups of the arc. The description concerns: (i) Paphsanias submarine volcano in the Methana group, (ii) three volcanic domes to the east of Antimilos Volcano and hydrothermal activity in southeast Milos in the Milos group, (iii) three volcanic domes east of Christiana and a chain of about twenty volcanic domes and craters in the Kolumbo zone northeast of Santorini in the Santorini group and (iv) several volcanic domes and a volcanic caldera together with very deep slopes of several volcanic islands in the Nisyros group. The tectonic structure of the volcanic centers is described and related to the geometry of the arc and the neotectonic graben structures that usually host them. The NE-SW direction is dominant in the Santorini and Nisyros volcanic groups, located at the eastern part of the arc, where strike-slip is also present, whereas NW-SE direction dominates in Milos and Methana at the western part, where co-existence of E-W disrupting normal faults is observed. The volcanic relief reaches 1100-1200 m in most cases. This is produced from the outcrops of the volcanic centers emerging usually at 400-600 m depth and ending either below sea level or at high altitudes of 600-700 m on the islands. Hydrothermal activity at relatively high temperatures observed in Kolumbo is remarkable whereas low temperature phenomena have been detected in the Santorini caldera around Kameni islands and in the area southeast of Milos. In Methana and Nisyros, hydrothermal activity seems to be limited in the coastal areas without other offshore manifestations.

  14. Embedded multiparametric system for volcano monitoring

    Science.gov (United States)

    Moure, David; Torres, Pedro A.; Meletlidis, Stavros; Lopez, Carmen; José Blanco, María

    2014-05-01

    A low cost and low power consumption multiparametric system designed for volcano monitoring is presented. Once tested with various sensors, at present it is installed in two locations in Tenerife, Canary Islands, acquiring and transmitting data in real time. The system is based on a commercial board (Raspberry Pi®, RPi®) that uses an embedded ARMTM processor with a Debian (Wheezy-Raspbian) Linux Operating System. This configuration permits different standard communication systems between devices as USB and ETHERNET, and also communication with integrated circuits is possible. The whole system includes this platform and self-developed hardware and software. Analog signals are acquired at an expansion board with an ADC converter with three 16 bits channels. This board, which is powered directly from the RPi®, provides timing to the sampling data using a Real Time Clock (RTC). Two serial protocols (I2C and SPI) are responsible for communications. Due to the influence of atmospheric phenomena on the volcano monitoring data, the system is complemented by a self-developed meteorological station based on ArduinoCC and low cost commercial sensors (atmospheric pressure, humidity and rainfall). It is powered with the RPi® and it uses a serial protocol for communications. Self-developed software run under Linux OS and handles configuration, signal acquisition, data storage (USB storage or SD card) and data transmission (FTP, web server). Remote configuration, data plotting and downloading is available through a web interface tool. Nowadays, the system is used for gravimetric and oceanic tides data acquisition in Tenerife and soon it will be applied for clinometric data.

  15. Newberry Volcano EGS Demonstration - Phase I Results

    Energy Technology Data Exchange (ETDEWEB)

    Osborn, William L. [AltaRock Energy, Inc., Seattle, WA (United States); Petty, Susan [AltaRock Energy, Inc., Seattle, WA (United States); Cladouhos, Trenton T. [AltaRock Energy, Inc., Seattle, WA (United States); Iovenitti, Joe [AltaRock Energy, Inc., Seattle, WA (United States); Nofziger, Laura [AltaRock Energy, Inc., Seattle, WA (United States); Callahan, Owen [AltaRock Energy, Inc., Seattle, WA (United States); Perry, Douglas S. [Davenport Newberry Holdings LLC, Stamford, CT (United States); Stern, Paul L. [PLS Environmental, LLC, Boulder, CO (United States)

    2011-10-23

    Phase I of the Newberry Volcano Enhanced Geothermal System (EGS) Demonstration included permitting, community outreach, seismic hazards analysis, initial microseismic array deployment and calibration, final MSA design, site characterization, and stimulation planning. The multi-disciplinary Phase I site characterization supports stimulation planning and regulatory permitting, as well as addressing public concerns including water usage and induced seismicity. A review of the project's water usage plan by an independent hydrology consultant found no expected impacts to local stakeholders, and recommended additional monitoring procedures. The IEA Protocol for Induced Seismicity Associated with Enhanced Geothermal Systems was applied to assess site conditions, properly inform stakeholders, and develop a comprehensive mitigation plan. Analysis of precision LiDAR elevation maps has concluded that there is no evidence of recent faulting near the target well. A borehole televiewer image log of the well bore revealed over three hundred fractures and predicted stress orientations. No natural, background seismicity has been identified in a review of historic data, or in more than seven months of seismic data recorded on an array of seven seismometers operating around the target well. A seismic hazards and induced seismicity risk assessment by an independent consultant concluded that the Demonstration would contribute no additional risk to residents of the nearest town of La Pine, Oregon. In Phase II of the demonstration, an existing deep hot well, NWG 55-29, will be stimulated using hydroshearing techniques to create an EGS reservoir. The Newberry Volcano EGS Demonstration is allowing geothermal industry and academic experts to develop, validate and enhance geoscience and engineering techniques, and other procedures essential to the expansion of EGS throughout the country. Successful development will demonstrate to the American public that EGS can play a significant role

  16. Fluctuation analysis of the hourly time variability of volcano-magnetic signals recorded at Mt. Etna Volcano, Sicily (Italy)

    Energy Technology Data Exchange (ETDEWEB)

    Currenti, Gilda [Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania, Piazza Roma 2, 95123 Catania (Italy); Del Negro, Ciro [Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania, Piazza Roma 2, 95123 Catania (Italy); Lapenna, Vincenzo [Istituto di Metodologie per l' Analisi Ambientale, Consiglio Nazionale delle Ricerche, IMAA-CNR, C.da S.Loja 5, 85050 Tito, PZ (Italy); Telesca, Luciano [Istituto di Metodologie per l' Analisi Ambientale, Consiglio Nazionale delle Ricerche, IMAA-CNR, C.da S.Loja 5, 85050 Tito, PZ (Italy)]. E-mail: ltelesca@imaa.cnr.it

    2005-03-01

    The time-correlation properties in the hourly time variability of volcano-magnetic data measured at the active volcano Mt. Etna, Sicily (southern Italy), are investigated by using the detrended fluctuation analysis (DFA). DFA is a data processing method that allows for the detection of scaling behaviors in observational time series even in the presence of nonstationarities. The procedure adopted has revealed unambiguous link between the dynamics of the measured data and the recent eruptive episode of the volcano occurred on October 27, 2002.

  17. Magma supply, storage, and transport at shield-stage Hawaiian volcanoes: Chapter 5 in Characteristics of Hawaiian volcanoes

    Science.gov (United States)

    Poland, Michael P.; Miklius, Asta; Montgomery-Brown, Emily K.; Poland, Michael P.; Takahashi, T. Jane; Landowski, Claire M.

    2014-01-01

    The characteristics of magma supply, storage, and transport are among the most critical parameters governing volcanic activity, yet they remain largely unconstrained because all three processes are hidden beneath the surface. Hawaiian volcanoes, particularly Kīlauea and Mauna Loa, offer excellent prospects for studying subsurface magmatic processes, owing to their accessibility and frequent eruptive and intrusive activity. In addition, the Hawaiian Volcano Observatory, founded in 1912, maintains long records of geological, geophysical, and geochemical data. As a result, Hawaiian volcanoes have served as both a model for basaltic volcanism in general and a starting point for many studies of volcanic processes.

  18. Single-station monitoring of volcanoes using seismic ambient noise

    Science.gov (United States)

    De Plaen, Raphael S. M.; Lecocq, Thomas; Caudron, Corentin; Ferrazzini, Valérie; Francis, Olivier

    2016-08-01

    Seismic ambient noise cross correlation is increasingly used to monitor volcanic activity. However, this method is usually limited to volcanoes equipped with large and dense networks of broadband stations. The single-station approach may provide a powerful and reliable alternative to the classical "cross-station" approach when measuring variation of seismic velocities. We implemented it on the Piton de la Fournaise in Reunion Island, a very active volcano with a remarkable multidisciplinary continuous monitoring. Over the past decade, this volcano has been increasingly studied using the traditional cross-correlation technique and therefore represents a unique laboratory to validate our approach. Our results, tested on stations located up to 3.5 km from the eruptive site, performed as well as the classical approach to detect the volcanic eruption in the 1-2 Hz frequency band. This opens new perspectives to successfully forecast volcanic activity at volcanoes equipped with a single three-component seismometer.

  19. Distribution of acidic groundwater around quaternary volcanoes in Japan

    Energy Technology Data Exchange (ETDEWEB)

    Asamori, Koichi; Ishimaru, Tsuneari; Iwatsuki, Teruki [Japan Nuclear Cycle Development Inst., Toki, Gifu (Japan). Tono Geoscience Center

    2002-06-01

    One important key issue in the understanding of the long-term stability of the geological environment is the influence of magmatism. In this study, we examined the general spatial distribution of acidic groundwater around Quaternary volcanoes in Japan using a database of groundwater geochemistry. The results may be summarized as follows: Acidic groundwater with pH < 4.8 mainly occur in present volcanic regions and are distributed from several kilometers to about 20 km from Quaternary volcanoes. The pH value of groundwater tends to decrease with increasing distance from a volcano. However, these results may be affected by inhomogeneity of groundwater data distribution and the characteristic activity of each volcano. In order to assess a specific volcanic region, a detailed analysis that considers volcanic activity, using a data set with high spatial density is necessary. (author)

  20. Vegetation damage and recovery after Chiginagak Volcano Crater drainage event

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — From August 20 — 23, 2006, I revisited Chiginigak volcano to document vegetation recovery after the crater drainage event that severely damaged vegetation in May of...

  1. Chasing lava: a geologist's adventures at the Hawaiian Volcano Observatory

    Science.gov (United States)

    Duffield, Wendell A.

    2003-01-01

    A lively account of the three years (1969-1972) spent by geologist Wendell Duffield working at the Hawaiian Volcano Observatory at Kilauea, one of the world's more active volcanoes. Abundantly illustrated in b&w and color, with line drawings and maps, as well. Volcanologists and general readers alike will enjoy author Wendell Duffield's report from Kilauea--home of Pele, the goddess of fire and volcanoes. Duffield's narrative encompasses everything from the scientific (his discovery that the movements of cooled lava on a lava lake mimic the movements of the earth's crust, providing an accessible model for understanding plate tectonics) to the humorous (his dog's discovery of a snake on the supposedly snake-free island) to the life-threatening (a colleague's plunge into molten lava). This charming account of living and working at Kilauea, one of the world's most active volcanoes, is sure to be a delight.

  2. Mount Rainier: living safely with a volcano in your backyard

    Science.gov (United States)

    Driedger, Carolyn L.; Scott, William E.

    2008-01-01

    Majestic Mount Rainier soars almost 3 miles (14,410 feet) above sea level and looms over the expanding suburbs of Seattle and Tacoma, Washington. Each year almost two million visitors come to Mount Rainier National Park to admire the volcano and its glaciers, alpine meadows, and forested ridges. However, the volcano's beauty is deceptive - U.S. Geological Survey (USGS) research shows that Mount Rainier is one of our Nation's most dangerous volcanoes. It has been the source of countless eruptions and volcanic mudflows (lahars) that have surged down valleys on its flanks and buried broad areas now densely populated. To help people live more safely with the volcano, USGS scientists are working closely with local communities, emergency managers, and the National Park Service.

  3. Trouble Brewing in San Francisco. Policy Brief

    Science.gov (United States)

    Buck, Stuart

    2010-01-01

    The city of San Francisco will face enormous budgetary pressures from the growing deficits in public pensions, both at a state and local level. In this policy brief, the author estimates that San Francisco faces an aggregate $22.4 billion liability for pensions and retiree health benefits that are underfunded--including $14.1 billion for the city…

  4. El Hospital San Carlos de Bogotá y el Tratamiento de la Tuberculosis

    Directory of Open Access Journals (Sweden)

    Adolfo de Francisco Zea

    1986-04-01

    testamentaria por un representante del arzobispo de Bogotá, otro de la Sociedad de San Vicente de Paul y un tercero inicialmente nombrado por los hermanos de don Gustavo y a la muerte de estos “designado por el Presidente de la Academia de Medicina de Bogotá”.

    El Testamento fue consignado en la escritura pública No. 2761 de 13 de agosto de 1941 de la Notaría Cuarta del Circuito de Bogotá...

  5. Sulfur dioxide contributions to the atmosphere by volcanoes.

    Science.gov (United States)

    Stoiber, R E; Jepsen, A

    1973-11-01

    The first extensive measurements by remote-sensing correlation spectrometry of the sulfur dioxide emitted by volcanic plumes indicate that on the order of 10(3) metric tons of sulfur dioxide gas enter the atmosphere daily from Central American volcanoes. Extrapolation gives a minimum estimate of the annual amount of sulfur dioxide emitted from the world's volcanoes of about 10(7) metric tons.

  6. Three-dimensional shallow velocity structure beneath Taal Volcano, Philippines

    Science.gov (United States)

    You, Shuei-Huei; Konstantinou, Konstantinos I.; Gung, Yuancheng; Lin, Cheng-Horng

    2017-07-01

    Based on its numerous historical explosive eruptions and high potential hazards to nearby population of millions, Taal Volcano is one of the most dangerous "Decade Volcanoes" in the world. To provide better investigation on local seismicity and seismic structure beneath Taal Volcano, we deployed a temporary seismic network consisting of eight stations from March 2008 to March 2010. In the preliminary data processing stage, three periods showing linear time-drifting of internal clock were clearly identified from noise-derived empirical Green's functions. The time-drifting errors were corrected prior to further data analyses. By using VELEST, 2274 local earthquakes were manually picked and located. Two major earthquake groups are noticed, with one lying beneath the western shore of Taal Lake showing a linear feature, and the other spreading around the eastern flank of Taal Volcano Island at shallower depths. We performed seismic tomography to image the 3D structure beneath Taal Volcano using the LOTOS algorithm. Some interesting features are revealed from the tomographic results, including a solidified magma conduit below the northwestern corner of Taal Volcano Island, indicated by high Vp, Vs, and low Vp/Vs ratio, and a large potential hydrothermal reservoir beneath the center of Taal Volcano Island, suggested by low Vs and high Vp/Vs ratio. Furthermore, combining earthquake distributions and tomographic images, we suggest potential existence of a hydrothermal reservoir beneath the southwestern corner of Taal Lake, and a fluid conduit extending to the northwest. These seismic features have never been proposed in previous studies, implying that new hydrothermal activity might be formed in places away from the historical craters on Taal Volcano Island.

  7. Geomorphometric comparative analysis of Latin-American volcanoes

    Science.gov (United States)

    Camiz, Sergio; Poscolieri, Maurizio; Roverato, Matteo

    2017-07-01

    The geomorphometric classifications of three groups of volcanoes situated in the Andes Cordillera, Central America, and Mexico are performed and compared. Input data are eight local topographic gradients (i.e. elevation differences) obtained by processing each volcano raster ASTER-GDEM data. The pixels of each volcano DEM have been classified into 17 classes through a K-means clustering procedure following principal component analysis of the gradients. The spatial distribution of the classes, representing homogeneous terrain units, is shown on thematic colour maps, where colours are assigned according to mean slope and aspect class values. The interpretation of the geomorphometric classification of the volcanoes is based on the statistics of both gradients and morphometric parameters (slope, aspect and elevation). The latter were used for a comparison of the volcanoes, performed through classes' slope/aspect scatterplots and multidimensional methods. In this paper, we apply the mentioned methodology on 21 volcanoes, randomly chosen from Mexico to Patagonia, to show how it may contribute to detect geomorphological similarities and differences among them. As such, both its descriptive and graphical abilities may be a useful complement to future volcanological studies.

  8. Effects of Basement, Structure, and Stratigraphic Heritages on Volcano Behavior

    Science.gov (United States)

    Lagmay, Alfredo Mahar Francisco A.

    2006-06-01

    Effective natural hazard mitigation requires that the science surrounding geophysical events be thoroughly explored. With millions of people living on the flanks of volcanoes, understanding the parameters that effect volcanic behavior is critically important. In particular, basements can influence the occurrence of volcanic eruptions and landslides. This control by the substrate on volcano behavior usually has been considered questionable or less important than the conditions of the deep magma source. However, due to recent findings, this view is changing, specifically with regard to approaches in assessing volcanic hazards. The November 2005 AGU Chapman Conference ``Effects of Basement, Structure, and Stratigraphic Heritages on Volcano Behavior'' brought together geologists and geophysicists from North and South America, Europe, and Asia to discuss the results of their research on the reciprocal effects of the interaction between volcanos and their basements. The conference also highlighted the importance of holding Chapman conferences in developing countries such as the Philippines because many hazardous volcanos are situated in these countries. Apart from having natural field laboratories, these are the very same places that need to promote scientific discourse on volcano research, which can lead to more effective hazard mitigation programs.

  9. GlobVolcano pre-operational services for global monitoring active volcanoes

    Science.gov (United States)

    Tampellini, Lucia; Ratti, Raffaella; Borgström, Sven; Seifert, Frank Martin; Peltier, Aline; Kaminski, Edouard; Bianchi, Marco; Branson, Wendy; Ferrucci, Fabrizio; Hirn, Barbara; van der Voet, Paul; van Geffen, J.

    2010-05-01

    The GlobVolcano project (2007-2010) is part of the Data User Element programme of the European Space Agency (ESA). The project aims at demonstrating Earth Observation (EO) based integrated services to support the Volcano Observatories and other mandate users (e.g. Civil Protection) in their monitoring activities. The information services are assessed in close cooperation with the user organizations for different types of volcano, from various geographical areas in various climatic zones. In a first phase, a complete information system has been designed, implemented and validated, involving a limited number of test areas and respective user organizations. In the currently on-going second phase, GlobVolcano is delivering pre-operational services over 15 volcanic sites located in three continents and as many user organizations are involved and cooperating with the project team. The set of GlobVolcano offered EO based information products is composed as follows: Deformation Mapping DInSAR (Differential Synthetic Aperture Radar Interferometry) has been used to study a wide range of surface displacements related to different phenomena (e.g. seismic faults, volcanoes, landslides) at a spatial resolution of less than 100 m and cm-level precision. Permanent Scatterers SAR Interferometry method (PSInSARTM) has been introduced by Politecnico of Milano as an advanced InSAR technique capable of measuring millimetre scale displacements of individual radar targets on the ground by using multi-temporal data-sets, estimating and removing the atmospheric components. Other techniques (e.g. CTM) have followed similar strategies and have shown promising results in different scenarios. Different processing approaches have been adopted, according to data availability, characteristic of the area and dynamic characteristics of the volcano. Conventional DInSAR: Colima (Mexico), Nyiragongo (Congo), Pico (Azores), Areanal (Costa Rica) PSInSARTM: Piton de la Fournaise (La Reunion Island

  10. Petrologic insights into basaltic volcanism at historically active Hawaiian volcanoes: Chapter 6 in Characteristics of Hawaiian volcanoes

    Science.gov (United States)

    Helz, Rosalind L.; Clague, David A.; Sisson, Thomas W.; Thornber, Carl R.; Poland, Michael P.; Takahashi, T. Jane; Landowski, Claire M.

    2014-01-01

    Study of the petrology of Hawaiian volcanoes, in particular the historically active volcanoes on the Island of Hawai‘i, has long been of worldwide scientific interest. When Dr. Thomas A. Jaggar, Jr., established the Hawaiian Volcano Observatory (HVO) in 1912, detailed observations on basaltic activity at Kīlauea and Mauna Loa volcanoes increased dramatically. The period from 1912 to 1958 saw a gradual increase in the collection and analysis of samples from the historical eruptions of Kīlauea and Mauna Loa and development of the concepts needed to evaluate them. In a classic 1955 paper, Howard Powers introduced the concepts of magnesia variation diagrams, to display basaltic compositions, and olivine-control lines, to distinguish between possibly comagmatic and clearly distinct basaltic lineages. In particular, he and others recognized that Kīlauea and Mauna Loa basalts must have different sources.

  11. A new species of Tarracoblaniulus Mauriès & Vicente, 1977: description, postembryonic development, life cycle, and spatial distribution (Diplopoda, Julida, Blaniulidae

    Directory of Open Access Journals (Sweden)

    Martínez, H.

    2009-06-01

    Full Text Available Tarracoblaniulus phantasmanus n. sp. is described from Tarragona province, Spain and compared with the only known other species known in the genus, T. lagari Mauriès & Vicente, 1977, from which it differs mainly in having only 5, instead of 15 or more, straight spines on the posterior gonopod. The female vulva (unknown in T. lagari is very different from all known blaniulid vulvae. Based on a large number of specimens, the postembryonic development (euanamorphosis from stadium II onward is described. This is highly variable, with three to six apodous body rings in stadium IV, which is the most variable number so far recorded in Blaniulidae. Accordingly, specimens beyond stadium VIII could not be assigned to a specific stadium. At least some males are morphologically distinguishable in stadium IV, morphologically mature males appear in stadium VIII, possibly already in stadium VII. The life cycle of the new species is tentatively suggested to involve at least three years. The monthly mean density of the total population was 28.82 ind/m2 across the whole soil profile. Statistically significant differences in density values between months and Spearman’s rank correlation analyses between the monthly mean values of density and temperature show that T. phantasmanus presents a maximum density in the coldest months and a minimum one in the summer. Significant differences between monthly mean densities of different soil levels and the Usher index values show that during the spring and summer T. phantasmanus is concentrated in the mineral horizon A. In autumn, during winter and up to early spring, the population shows a clear tendency to move up towards horizon H and horizon L/F. Concerning horizontal distribution, Morisita index monthly values for each of the horizons indicate that the species is distributed in patches.Se describe Tarracoblaniulus phantasmanus n. sp., especie encontrada en la provincia de Tarragona (España, y se compara con la única

  12. The diversity of mud volcanoes in the landscape of Azerbaijan

    Science.gov (United States)

    Rashidov, Tofig

    2014-05-01

    As the natural phenomenon the mud volcanism (mud volcanoes) of Azerbaijan are known from the ancient times. The historical records describing them are since V century. More detail study of this natural phenomenon had started in the second half of XIX century. The term "mud volcano" (or "mud hill") had been given by academician H.W. Abich (1863), more exactly defining this natural phenomenon. All the previous definitions did not give such clear and capacious explanation of it. In comparison with magmatic volcanoes, globally the mud ones are restricted in distribution; they mainly locate within the Alpine-Himalayan, Pacific and Central Asian mobile belts, in more than 30 countries (Columbia, Trinidad Island, Italy, Romania, Ukraine, Georgia, Azerbaijan, Turkmenistan, Iran, Pakistan, Indonesia, Burma, Malaysia, etc.). Besides it, the zones of mud volcanoes development are corresponded to zones of marine accretionary prisms' development. For example, the South-Caspian depression, Barbados Island, Cascadia (N.America), Costa-Rica, Panama, Japan trench. Onshore it is Indonesia, Japan, and Trinidad, Taiwan. The mud volcanism with non-accretionary conditions includes the areas of Black Sea, Alboran Sea, the Gulf of Mexico (Louisiana coast), Salton Sea. But new investigations reveal more new mud volcanoes and in places which were not considered earlier as the traditional places of mud volcanoes development (e.g. West Nile Rive delta). Azerbaijan is the classic region of mud volcanoes development. From over 800 world mud volcanoes there are about 400 onshore and within the South-Caspian basin, which includes the territory of East Azerbaijan (the regions of Shemakha-Gobustan and Low-Kura River, Absheron peninsula), adjacent water area of South Caspian (Baku and Absheron archipelagoes) and SW Turkmenistan and represents an area of great downwarping with thick (over 25 km) sedimentary series. Generally, in the modern relief the mud volcanoes represent more or less large uplifts

  13. 2006-2008 Eruptions and Volcano Hazards Of Soputan Volcano, North Sulawesi, Indonesia

    Science.gov (United States)

    Hendratno, K.; Pallister, J. S.; McCausland, W. A.; Kristianto, M.; Bina, F. R.; Carn, S. A.; Haerani, N.; Griswold, J.; Keeler, R.

    2010-12-01

    Soputan is a basalt volcano located in North Sulawesi near the southern margin of the Quaternary Tondano Caldera. Unusual for a basalt volcano, Soputan produces summit lava domes and explosive eruptions, as well as voluminous basaltic tephra deposits and lava flows. Soputan erupted five times during 2006-2008: on 14 December, 2006, 12-15 August, 2007, 25-26 October, 2007, 5-6 June, 2008, and 5-6 October, 2008. The 2006-2007 eruptions destroyed a lava dome at the volcano’s summit and exposed the conduit, resulting in Vulcanian eruptions and St. Vincent type pyroclastic flows from an open vent structure. We used high-resolution satellite images and digital elevation models to make photo-geologic maps of the deposits from the 2006, 2007 and 2008 eruptions, to estimate volumes of deposits using GIS and to model potential flow hazards. In March, 2008 and in March 2009 we conducted reconnaissance geologic field investigations at Soputan. This work was done to field-check our photo-geologic mapping, to reconstruct the sequence of eruptive events in 2006-2008 and to collect samples for geochemical and petrographic analysis. We also analyzed seismic records and SO2 emission data from the eruptions and we interpreted these data in the context of our geologic and geochemical data to provide insights into the ascent and degassing of magmas. On the basis of the eruptive history and modeling of potential lahar inundation areas we present an updated assessment of volcano hazards and a forecast for future eruptions at Soputan. Our analysis of field and petrologic data indicates that Soputan is an open-system volcano, which taps basalt magma from great depth, apparently with little shallow storage of this magma. Degassing of the magma as it rises within the conduit results in growth of micro-phenocrysts, evolution of the matrix melt and a commensurate increase in the viscosity of the magma. This, in turn, results in growth of lava domes and more explosive eruptions than are

  14. Felsic maar-diatreme volcanoes: a review

    Science.gov (United States)

    Ross, Pierre-Simon; Carrasco Núñez, Gerardo; Hayman, Patrick

    2017-02-01

    Felsic maar-diatreme volcanoes host major ore deposits but have been largely ignored in the volcanology literature, especially for the diatreme portion of the system. Here, we use two Mexican tuff rings as analogs for the maar ejecta ring, new observations from one diatreme, and the economic geology literature on four other mineralized felsic maar-diatremes to produce an integrated picture of this type of volcano. The ejecta rings are up to 50 m+ thick and extend laterally up to ˜1.5 km from the crater edge. In two Mexican examples, the lower part of the ejecta ring is dominated by pyroclastic surge deposits with abundant lithic clasts (up to 80% at Hoya de Estrada). These deposits display low-angle cross-bedding, dune bedforms, undulating beds, channels, bomb sags, and accretionary lapilli and are interpreted as phreatomagmatic. Rhyolitic juvenile clasts at Tepexitl have only 0-25% vesicles in this portion of the ring. The upper parts of the ejecta ring sequences in the Mexican examples have a different character: lithic clasts can be less abundant, the grain size is typically coarser, and the juvenile clasts can be different in character (with some more vesicular fragments). Fragmentation was probably shallower at this stage. The post-eruptive maar crater infill is known at Wau and consists of reworked pyroclastic deposits as well as lacustrine and other sediments. Underneath are bedded upper diatreme deposits, interpreted as pyroclastic surge and fall deposits. The upper diatreme and post-eruptive crater deposits have dips larger than 30° at Wau, with approximately centroclinal attitudes. At still lower structural levels, the diatreme pyroclastic infill is largely unbedded; Montana Tunnels and Kelian are good examples of this. At Cerro de Pasco, the pyroclastic infill seems bedded despite about 500 m of post-eruptive erosion relative to the pre-eruptive surface. The contact between the country rocks and the diatreme is sometimes characterized by country rock

  15. Spatial Analysis of Volcanoes at Convergent Margins on Earth

    Science.gov (United States)

    Roberts, R. V.; de Silva, S. L.; Meyers, M.

    2009-12-01

    One of the most obvious patterns seen on the surface of the terrestrial planets is the distribution of volcanoes. On Earth, most volcanoes are distributed in volcanic “arcs” that signal the primary relationship between subduction and volcanism. The distributions of major composite volcanoes in volcanic arcs are thought to reflect the primary magmatic pathways from source to surface. Understanding these patterns therefore may allow fundamental controls on the organization of magmatic plumbing in arcs to be identified. Using a control dataset from the Central Volcanic Zone of the Andes (de Silva and Francis, 1991; Springer-Verlag) we have examined several popular approaches to spatial analysis of volcano distribution in several volcanic arcs (Aleutian, Alaskan, Central American, Northern and Southern volcanic zones of the Andes). Restricting our analysis to major volcanoes of similar age, we find that while clustering is visually obvious in many volcanic arcs it has been rejected as a primary signal by previous analytical efforts (e.g. Bremont d'Ars et al (1995)). We show that the fractal box or grid counting method used previously does not detect clusters and statistical methods such as the Kernel Density Analysis or Single-link Cluster Analysis are better suited for cluster detection. Utilizing both ARC GIS and Matlab to conduct density analyses in combination with statistical software SPlus for the appropriate hypothesis testing methods such as the pooled variance t-test, the Welch Modified two sample t-test, and the f-test we find evidence of clustering in four volcanic arcs whose crustal thickness is greater than or equal to 40 kilometres (Central America, CVZ, NVZ, SVZ). We suggest that clustering is the surface manifestation of upper crustal diffusion of primary magmatic pathways, which in other places manifests as a single volcano. The inter-cluster distance is a thus reflection of primary magmatic pathways and thus equivalent to inter-volcano distance

  16. The 2009 eruption of Redoubt Volcano, Alaska

    Science.gov (United States)

    Bull, Katharine F.; Cameron, Cheryl; Coombs, Michelle L.; Diefenbach, Angie; Lopez, Taryn; McNutt, Steve; Neal, Christina; Payne, Allison; Power, John A.; Schneider, David J.; Scott, William E.; Snedigar, Seth; Thompson, Glenn; Wallace, Kristi; Waythomas, Christopher F.; Webley, Peter; Werner, Cynthia A.; Schaefer, Janet R.

    2012-01-01

    Redoubt Volcano, an ice-covered stratovolcano on the west side of Cook Inlet, erupted in March 2009 after several months of escalating unrest. The 2009 eruption of Redoubt Volcano shares many similarities with eruptions documented most recently at Redoubt in 1966–68 and 1989–90. In each case, the eruptive phase lasted several months, consisted of multiple ashproducing explosions, produced andesitic lava and tephra, removed significant amounts of ice from the summit crater and Drift glacier, generated lahars that inundated the Drift River valley, and culminated with the extrusion of a lava dome in the summit crater. Prior to the 2009 explosive phase of the eruption, precursory seismicity lasted approximately six months with the fi rst weak tremor recorded on September 23, 2008. The first phreatic explosion was recorded on March 15, and the first magmatic explosion occurred seven days later, at 22:34 on March 22. The onset of magmatic explosions was preceded by a strong, shallow swarm of repetitive earthquakes that began about 04:00 on March 20, 2009, less than three days before an explosion. Nineteen major ash-producing explosions generated ash clouds that reached heights between 17,000 ft and 62,000 ft (5.2 and 18.9 km) ASL. During ash fall in Anchorage, the Ted Stevens International Airport was shut down for 20 hours, from ~17:00 on March 28 until 13:00 on March 29. On March 23 and April 4, lahars with fl ow depths to 10 m in the upper Drift River valley inundated parts of the Drift River Terminal (DRT). The explosive phase ended on April 4 with a dome collapse at 05:58. The April 4 ash cloud reached 50,000 ft (15.2 km) and moved swiftly to the southeast, depositing up to 2 mm of ash fall in Homer, Anchor Point, and Seldovia. At least two and possibly three lava domes grew and were destroyed by explosions prior to the final lava dome extrusion that began after the April 4 event. The fi nal lava dome ceased growth by July 1, 2009, with an estimated volume of 72

  17. Volcano surveillance by ACR silver fox

    Science.gov (United States)

    Patterson, M.C.L.; Mulligair, A.; Douglas, J.; Robinson, J.; Pallister, J.S.

    2005-01-01

    Recent growth in the business of unmanned air vehicles (UAVs) both in the US and abroad has improved their overall capability, resulting in a reduction in cost, greater reliability and adoption into areas where they had previously not been considered. Uses in coastal and border patrol, forestry and agriculture have recently been evaluated in an effort to expand the observed area and reduce surveillance and reconnaissance costs for information gathering. The scientific community has both contributed and benefited greatly in this development. A larger suite of light-weight miniaturized sensors now exists for a range of applications which in turn has led to an increase in the gathering of information from these autonomous vehicles. In October 2004 the first eruption of Mount St Helens since 1986 caused tremendous interest amoUg people worldwide. Volcanologists at the U.S. Geological Survey rapidly ramped up the level of monitoring using a variety of ground-based sensors deployed in the crater and on the flanks of the volcano using manned helicopters. In order to develop additional unmanned sensing methods that can be used in potentially hazardous and low visibility conditions, a UAV experiment was conducted during the ongoing eruption early in November. The Silver Fox UAV was flown over and inside the crater to perform routine observation and data gathering, thereby demonstrating a technology that could reduce physical risk to scientists and other field operatives. It was demonstrated that UAVs can be flown autonomously at an active volcano and can deliver real time data to a remote location. Although still relatively limited in extent, these initial flights provided information on volcanic activity and thermal conditions within the crater and at the new (2004) lava dome. The flights demonstrated that readily available visual and infrared video sensors mounted in a small and relatively low-cost aerial platform can provide useful data on volcanic phenomena. This was

  18. Geochemistry of the volcano-hydrothermal system of El Chichón Volcano, Chiapas, Mexico

    Science.gov (United States)

    Taran, Yuri; Fischer, Tobias P.; Pokrovsky, Boris; Sano, Yuji; Armienta, Maria Aurora; Macias, Jose Luis

    The 1982 eruption of El Chichón volcano ejected more than 1km3 of anhydrite-bearing trachyandesite pyroclastic material to form a new 1-km-wide and 300-m-deep crater and uncovered the upper 500m of an active volcano-hydrothermal system. Instead of the weak boiling-point temperature fumaroles of the former lava dome, a vigorously boiling crater spring now discharges / 20kg/s of Cl-rich ( 15 000mg/kg) and sulphur-poor ( / 200mg/kg of SO4), almost neutral (pHup to 6.7) water with an isotopic composition close to that of subduction-type magmatic water (δD=-15‰, δ18O=+6.5‰). This spring, as well as numerous Cl-free boiling springs discharging a mixture of meteoric water with fumarolic condensates, feed the crater lake, which, compared with values in 1983, is now much more diluted ( 3000mg/kg of Cl vs 24 030mg/kg), less acidic (pH=2.6 vs 0.56) and contains much lower amounts of S ( / 200mg/kg of SO4, vs 3550mg/kg) with δ34S=0.5-4.2‰ (+17‰ in 1983). Agua Caliente thermal waters, on the southeast slope of the volcano, have an outflow rate of approximately 100kg/s of 71 °C Na-Ca-Cl water and are five times more concentrated than before the eruption (B. R. Molina, unpublished data). Relative N2, Ar and He gas concentrations suggest extensional tectonics for the El Chichón volcanic centre. The 3He/4He and 4He/20Ne ratios in gases from the crater fumaroles (7.3Ra, 2560) and Agua Caliente hot springs (5.3Ra, 44) indicate a strong magmatic contribution. However, relative concentrations of reactive species are typical of equilibrium in a two-phase boiling aquifer. Sulphur and C isotopic data indicate highly reducing conditions within the system, probably associated with the presence of buried vegetation resulting from the 1982 eruption. All Cl-rich waters at El Chichón have a common source. This water has the appearence of a "partially matured" magmatic fluid: condensed magmatic vapour neutralized by interaction with fresh volcaniclastic deposits and depleted in S

  19. Central San Juan caldera cluster: regional volcanic framework

    Science.gov (United States)

    Lipman, Peter W.

    2000-01-01

    Eruption of at least 8800 km3 of dacitic-rhyolitic magma as 9 major ash-slow sheets (individually 150-5000 km3) was accompanied by recurrent caldera subsidence between 28.3 and about 26.5 Ma in the central San Juan Mountains, Colorado. Voluminous andesitic-decitic lavas and breccias were erupted from central volcanoes prior to the ash-flow eruptions, and similar lava eruptions continued within and adjacent to the calderas during the period of explosive volcanism, making the central San Juan caldera cluster an exceptional site for study of caldera-related volcanic processes. Exposed calderas vary in size from 10 to 75 km in maximum diameter, the largest calderas being associated with the most voluminous eruptions. After collapse of the giant La Garita caldera during eruption if the Fish Canyon Tuff at 17.6 Ma, seven additional explosive eruptions and calderas formed inside the La Garita depression within about 1 m.y. Because of the nested geometry, maximum loci of recurrently overlapping collapse events are inferred to have subsided as much as 10-17 km, far deeper than the roof of the composite subvolcanic batholith defined by gravity data, which represents solidified caldera-related magma bodies. Erosional dissection to depths of as much as 1.5 km, although insufficient to reach the subvolcanic batholith, has exposed diverse features of intracaldera ash-flow tuff and interleaved caldera-collapse landslide deposits that accumulated to multikilometer thickness within concurrently subsiding caldera structures. The calderas display a variety of postcollapse resurgent uplift structures, and caldera-forming events produced complex fault geometries that localized late mineralization, including the epithermal base- and precious-metal veins of the well-known Creede mining district. Most of the central San Juan calderas have been deeply eroded, and their identification is dependent on detailed geologic mapping. In contrast, the primary volcanic morphology of the

  20. Shell utilization pattern of the hermit crab Clibanarius vittatus (Crustacea, Anomura in an estuary at São Vicente, State of São Paulo, Brazil Padrão de utilização de conchas do ermitão Clibanarius vittatus (Crustacea, Anomura, no Estuário de São Vicente, Estado de São Paulo, Brasil

    Directory of Open Access Journals (Sweden)

    Bruno S. Sant'Anna

    2006-06-01

    Full Text Available We evaluated the gastropod shell utilization pattern of the hermit crab Clibanarius vittatus (Bosc, 1802 at Pescadores Beach in São Vicente, State of São Paulo, Brazil. Specimens were collected monthly from May 2001 through April 2003, in the intertidal zone at low tide. The crabs were weighed and their carapace shield length measured. All gastropod shells were identified and had their shell biometric parameters (total length and aperture length measured (mm and weighed (g. A total of 2,344 hermit crabs (644 males, 1,594 females, 45 ovigerous females and 61 individuals in intersex, using 13 species of gastropod shells, were collected. Stramonita haemastoma (Linnaeus, 1767, Cymatium parthenopeum (Von Salis, 1793 and Achatina fulica (Bowdich, 1822 comprised over 98% of all the shells. Male and intersex crabs were significantly larger than the females. This size difference strongly influenced the shell utilization pattern, principally in A. fulica, which has the largest shell size, that was only used by males and intersexual individuals of C. vittatus. Cymatium parthenopeum was the only shell species that showed a high determinant coefficient in all the biometric correlations evaluated. The high abundance of S. haemastoma shells and a strong correlation between crab size and shell aperture length established by a significant determination coefficient, indicated that C. vittatus uses this species as the principal resource for shell occupation at Pescadores Beach.O objetivo do presente estudo foi avaliar a utilização de conchas de gastrópodes por Clibanarius vittatus (Bosc, 1802, na Praia dos Pescadores, em São Vicente (SP, Brasil. Foram realizadas amostras mensais no período de maio de 2001 a abril de 2003, na região intertidal durante a maré baixa. Todos os animais foram pesados e tiveram o comprimento de seu escudo cefalotorácico mensurados, suas conchas identificadas e medidas quanto ao comprimento (mm, abertura (mm e peso (g

  1. Prevalência e características de mulheres com aborto provocado - Favela México 70, São Vicente - São Paulo Prevalence and characteristics of women with induced abortion - Favela México 70, São Vicente - São Paulo

    Directory of Open Access Journals (Sweden)

    Tássia Ferreira Santos

    2012-03-01

    Full Text Available No Brasil, o aborto está entre as principais causas de mortalidade materna. Pesquisas mostram que o aborto é praticado clandestinamente por mulheres de todas as classes sociais; no entanto, tem consequências desiguais, dependendo da inserção social, produzindo riscos à vida de mulheres pobres. Embora o tema venha sendo amplamente explorado nos últimos 20 anos, observou-se escassez de dados sobre mulheres de baixa renda. Desta forma, o presente estudo tem por objetivo estimar a prevalência de mulheres com aborto provocado. Arrolaram-se mulheres por inquérito domiciliar de base populacional em setores de baixa renda de São Vicente, São Paulo. Eram elegíveis as mulheres em idade fértil de 15 a 49 anos. A avaliação das razões de prevalência de mulheres com aborto provocado foi realizada por meio de modelos lineares generalizados, usando-se a regressão de Poisson com função de ligação logarítmica e variância robusta para aproximar a binomial. As variáveis que demonstraram ter maior influência no relato de aborto foram: "aceitar sempre esta prática" (IC95% 2,98 - 11,02, seguida de "não ter filho nascido vivo" (IC95% 1,35 - 19,78, ter de "dois a cinco nascidos vivos" (IC95% 1,42 - 14,40 e ter de "seis ou mais nascidos vivos" (IC 95% 1,35 - 19,78, "idade no momento da entrevista" (IC 95% 1,01 - 1,07 e "renda" In Brazil, abortion is among the leading causes of maternal mortality. Research has shown that abortion is practiced clandestinely by women of all social classes, but has unequal consequences depending on social inclusion, producing risks to poor women. Although the issue has been widely explored in the past 20 years, there is a lack of data about low-income women. Thus, the present study aims to estimate the prevalence of women with induced abortion. Women from a population-based household survey in low-income sectors of São Vicente, São Paulo were recruited. Women of childbearing age from 15 to 49 years were eligible

  2. Pteridófitas de um remanescente de Floresta Atlântica em São Vicente Férrer, Pernambuco, Brasil: Pteridaceae Pteridophytes of a remainder of Atlantic Forest in São Vicente Férrer, Pernambuco, Brazil: Pteridaceae

    Directory of Open Access Journals (Sweden)

    Marcio Roberto Pietrobom

    2002-10-01

    Full Text Available Foi realizado um levantamento florístico da pteridoflora da Mata do Estado, localizada no município de São Vicente Férrer, Zona da Mata Norte do Estado de Pernambuco. O estudo foi desenvolvido nesta área, devido a sua grande extensão, ca. 600ha, e também pela existência de uma grande diversidade de pteridófitas, resultado de um gradiente de umidade onde os fatores ambientais e físicos como os níveis de altitude, as precipitações pluviométricas, bem como a distribuição dessas precipitações têm importância fundamental para a vegetação da área. Foram empregados métodos tradicionais para o levantamento florístico, no período de um ano. Para a análise e identificação taxonômica dos exemplares coletados, foram utilizadas técnicas usuais e literaturas especializadas. São apresentadas ilustrações e distribuição geográfica das espécies, bem como, descrição da espécie nova referência e comentários da família, gêneros e espécies. O trabalho contribui para um maior conhecimento florístico e ecológico da pteridoflora de Reservas de Floresta Atlântica Serrana no Nordeste do Brasil. A família Pteridaceae está representada na área estudada por 20 espécies, distribuídas em sete gêneros (Pityrogramma Link, Adiantopsis Fée, Hemionitis L. e Acrostichum L. uma espécie cada; Doryopteris J. Sm. quatro espécies; Adiantum L. nove espécies e Pteris L. três espécies e uma variedade. Foi registrada uma nova referência para o estado de Pernambuco: Adiantum humile Kunze.A floristic survey of the pteridoflora at the Mata do Estado, located in the Municipality of São Vicente Férrer, Mata Norte (Atlantic Forest Zone in the state of Pernambuco, Brazil, was performed. The study was developed in this area, due to its great extension of ca. 600ha, and also because of a great of diversity pteridophytes , result of a humidity gradient where the environmental and physical factors such as the altitude levels and the

  3. Hydrothermal reservoir beneath Taal Volcano (Philippines): Implications to volcanic activity

    Science.gov (United States)

    Nagao, T.; Alanis, P. B.; Yamaya, Y.; Takeuchi, A.; Bornas, M. V.; Cordon, J. M.; Puertollano, J.; Clarito, C. J.; Hashimoto, T.; Mogi, T.; Sasai, Y.

    2012-12-01

    Taal Volcano is one of the most active volcanoes in the Philippines. The first recorded eruption was in 1573. Since then it has erupted 33 times resulting in thousands of casualties and large damages to property. In 1995, it was declared as one of the 15 Decade Volcanoes. Beginning in the early 1990s it has experienced several phases of abnormal activity, including seismic swarms, episodes of ground deformation, ground fissuring and hydrothermal activities, which continues up to the present. However, it has been noted that past historical eruptions of Taal Volcano may be divided into 2 distinct cycles, depending on the location of the eruption center, either at Main Crater or at the flanks. Between 1572-1645, eruptions occurred at the Main Crater, in 1707 to 1731, they occurred at the flanks. In 1749, eruptions moved back to the Main Crater until 1911. During the 1965 and until the end of the 1977 eruptions, eruptive activity once again shifted to the flanks. As part of the PHIVOLCS-JICA-SATREPS Project magnetotelluric and audio-magnetotelluric surveys were conducted on Volcano Island in March 2011 and March 2012. Two-dimensional (2-D) inversion and 3-D forward modeling reveals a prominent and large zone of relatively high resistivity between 1 to 4 kilometers beneath the volcano almost directly beneath the Main Crater, surrounded by zones of relatively low resistivity. This anomalous zone of high resistivity is hypothesized to be a large hydrothermal reservoir filled with volcanic fluids. The presence of this large hydrothermal reservoir could be related to past activities of Taal Volcano. In particular we believe that the catastrophic explosion described during the 1911 eruption was the result of the hydrothermal reservoir collapsing. During the cycle of Main Crater eruptions, this hydrothermal reservoir is depleted, while during a cycle of flank eruptions this reservoir is replenished with hydrothermal fluids.

  4. SUBMARINE VOLCANO CHARACTERISTICS IN SABANG WATERS

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    Hananto Kurnio

    2017-07-01

    Full Text Available The aim of the study is to understand the characteristics of a volcano occurred in marine environment, as Weh Island where Sabang City located is still demonstrated its volcanic cone morphology either through satellite imagery or bathymetric map. Methods used were marine geology, marine geophysics and oceanography. Results show that surface volcanism (sea depth less than 50 m take place as fumaroles, solfataras, hot ground, hot spring, hot mud pool and alteration in the vicinities of seafloor and coastal area vents. Seismic records also showed acoustic turbidity in the sea water column due to gas bubblings produced by seafloor fumaroles. Geochemical analyses show that seafloor samples in the vicinities of active and non-active fumarole vent are abundances with rare earth elements (REE. These were interpreted that the fumarole bring along REE through its gases and deposited on the surrounding seafloor surface. Co-existence between active fault of Sumatra and current volcanism produce hydrothermal mineralization in fault zone as observed in Serui and Pria Laot-middle of Weh Island which both are controlled by normal faults and graben.

  5. Research drilling in young silicic volcanoes

    Energy Technology Data Exchange (ETDEWEB)

    Eichelberger, J.C.

    1989-06-30

    Magmatic activity, and particularly silicic magmatic activity, is the fundamental process by which continental crust forms and evolves. The transport of magma from deep crustal reservoirs to the surface is a neglected but important aspect of magmatic phenomena. It encompasses problems of eruptive behavior, hydrothermal circulation, and ore deposition, and must be understood in order to properly interpret deeper processes. Drilling provides a means for determining the relationship of shallow intrusive processes to eruption processes at young volcanoes where eruptions are best understood. Drilling also provides a means for directly observing the processes of heat and mass transfer by which recently emplaced intrusions approach equilibrium with their new environment. Drilling in the Inyo Chain, a 600-year-old chain of volcanic vents in California, has shown the close relationship of silicic eruption to shallow dike emplacement, the control of eruptive style by shallow porous-flow degassing, the origin of obsidian by welding, the development of igneous zonation by viscosity segregation, and the character and size of conduits in relation to well-understood magmatic and phreatic eruptions. 36 refs., 9 figs.

  6. Deep Stimulation at Newberry Volcano EGS Demonstration

    Science.gov (United States)

    Grasso, K.; Cladouhos, T. T.; Petty, S.; Garrison, G. H.; Nordin, Y.; Uddenberg, M.; Swyer, M.

    2014-12-01

    The Newberry Volcano EGS Demonstration is a 5 year field project designed to demonstrate recent technological advances for engineered geothermal systems (EGS) development. Advances in reservoir stimulation, diverter, and monitoring are being tested in a hot (>300 C), dry well (NWG 55-29) drilled in 2008. These technologies could reduce the cost of electrical power generation. The project began in 2010 with two years of permitting, technical planning, and development of a project-specific Induced Seismicity Mitigation Plan (ISMP), and is funded in part by the Department of Energy. In 2012, the well was hydraulically stimulated with water at pressures below the principle stress for 7 weeks, resulting in hydroshearing. The depth of stimulation was successfully shifted by injection of two pills of Thermally-degradable Zonal Isolation Materials (TZIMs). Injectivity changes, thermal profiles and seismicity indicate that fracture permeability in well NWG 55-29 was enhanced during stimulation. This work successfully demonstrated the viability of large-volume (40,000 m3), low-pressure stimulation coupled with non-mechanical diverter technology, and microseismic monitoring for reservoir mapping. Further analysis and field testing in 2013 indicates further stimulation will be required in order to develop an economically viable reservoir, and is scheduled in 2014. The 2014 stimulation will use improved stimulation and monitoring equipment, better knowledge based on 2012 outcomes, and create a deep EGS reservoir in the hottest part of the wellbore.

  7. Newberry Volcano EGS Demonstration Stimulation Modeling

    Energy Technology Data Exchange (ETDEWEB)

    Trenton T. Cladouhos, Matthew Clyne, Maisie Nichols,; Susan Petty, William L. Osborn, Laura Nofziger

    2011-10-23

    As a part of Phase I of the Newberry Volcano EGS Demonstration project, several data sets were collected to characterize the rock volume around the well. Fracture, fault, stress, and seismicity data has been collected by borehole televiewer, LiDAR elevation maps, and microseismic monitoring. Well logs and cuttings from the target well (NWG 55-29) and core from a nearby core hole (USGS N-2) have been analyzed to develop geothermal, geochemical, mineralogical and strength models of the rock matrix, altered zones, and fracture fillings (see Osborn et al., this volume). These characterization data sets provide inputs to models used to plan and predict EGS reservoir creation and productivity. One model used is AltaStim, a stochastic fracture and flow software model developed by AltaRock. The software's purpose is to model and visualize EGS stimulation scenarios and provide guidance for final planning. The process of creating an AltaStim model requires synthesis of geologic observations at the well, the modeled stress conditions, and the stimulation plan. Any geomechanical model of an EGS stimulation will require many assumptions and unknowns; thus, the model developed here should not be considered a definitive prediction, but a plausible outcome given reasonable assumptions. AltaStim is a tool for understanding the effect of known constraints, assumptions, and conceptual models on plausible outcomes.

  8. Small angle neutron scattering (SANS and V-SANS) study of asphaltene aggregates in crude oil.

    Science.gov (United States)

    Headen, Thomas F; Boek, Edo S; Stellbrink, Jörg; Scheven, Ulrich M

    2009-01-06

    We report small angle neutron scattering (SANS) experiments on two crude oils. Analysis of the high-Q SANS region has probed the asphaltene aggregates in the nanometer length scale. We find that the radius of gyration decreases with increasing temperature. We show that SANS measurements on crude oils give similar aggregate sizes to those found from SANS measurements of asphaltenes redispersed in deuterated toluene. The combined use of SANS and V-SANS on crude oil samples has allowed the determination of the radius of gyration of large scale asphaltene aggregates of approximately 0.45 microm. This has been achieved by the fitting of Beaucage functions over two size regimes. Analysis of the fitted Beaucage functions at very low-Q has shown that the large scale aggregates are not simply made by aggregation of all the smaller nanoaggregates. Instead, they are two different aggregates coexisting.

  9. Cryptic differentiation in the endemic micromoth Galagete darwini (Lepidoptera, Autostichidae) on Galápagos volcanoes.

    Science.gov (United States)

    Schmitz, Patrick; Cibois, Alice; Landry, Bernard

    2008-10-27

    To gain insight into the early stages of speciation, we reconstructed a DNA-based phylogeny, using combined mitochondrial (cytochrome c oxidase subunits I and II: 1008 bp) and nuclear (elongation factor 1-alpha and wingless: 1062 bp) markers of populations of the moth Galagete darwini endemic to the Galápagos, which belongs to an insular radiation similar in size to that of Darwin's finches. Adults of G. darwini were collected in the arid lowlands of 11 of the Galápagos Islands (Baltra, Española, Fernandina, Floreana, Isabela, Pinta, Pinzón, San Cristobal, Santa Cruz, Santiago and Seymour) and the humid highlands of a subset of 5 of them (Fernandina, Floreana, Isabela, Santa Cruz and Santiago). The combined phylogeographic analysis surprisingly revealed that G. darwini populations at higher elevation on the western islands (Fernandina, Isabela and Santiago) represent a distinct lineage from the one in the low arid zones of these same islands. This is the first reported case in the archipelago of genetic cryptic differentiation correlated with elevation on the western Galápagos volcanoes.

  10. Vertical tectonic deformation associated with the San Andreas fault zone offshore of San Francisco, California

    Science.gov (United States)

    Ryan, H. F.; Parsons, T.; Sliter, R. W.

    2008-10-01

    A new fault map of the shelf offshore of San Francisco, California shows that faulting occurs as a distributed shear zone that involves many fault strands with the principal displacement taken up by the San Andreas fault and the eastern strand of the San Gregorio fault zone. Structures associated with the offshore faulting show compressive deformation near where the San Andreas fault goes offshore, but deformation becomes extensional several km to the north off of the Golden Gate. Our new fault map serves as the basis for a 3-D finite element model that shows that the block between the San Andreas and San Gregorio fault zone is subsiding at a long-term rate of about 0.2-0.3 mm/yr, with the maximum subsidence occurring northwest of the Golden Gate in the area of a mapped transtensional basin. Although the long-term rates of vertical displacement primarily show subsidence, the model of coseismic deformation associated with the 1906 San Francisco earthquake indicates that uplift on the order of 10-15 cm occurred in the block northeast of the San Andreas fault. Since 1906, 5-6 cm of regional subsidence has occurred in that block. One implication of our model is that the transfer of slip from the San Andreas fault to a fault 5 km to the east, the Golden Gate fault, is not required for the area offshore of San Francisco to be in extension. This has implications for both the deposition of thick Pliocene-Pleistocene sediments (the Merced Formation) observed east of the San Andreas fault, and the age of the Peninsula segment of the San Andreas fault.

  11. The first discovery of cryptotephra of the catastrophic eruptions of the Baitoushan volcano in the tenth century A.D. in the shelf deposits of the Sea of Japan

    Science.gov (United States)

    Akulichev, V. A.; Astakhov, A. S.; Malakhov, M. I.; Aksentov, K. I.; Karabtsov, A. A.; Mar'yash, A. A.; Alatortsev, A. V.

    2016-08-01

    The interlayers of the cryptotephra of different episodes of the catastrophic eruption of the Baitoushan volcano (Paektu-san, Changbaishan-Tianchi) in the 10th century were discovered in the sedimentary cover of Amur Bay in the Sea of Japan by the geochemical and paleomagnetic characteristics. The petrochemistry of the volcanic glass indicates the possible occurrence of pyroclastic material in the B-Tm layer and more recent episodes that have not been identified before in the sediments of the Sea of Japan. The impact of the eruption on the bay environment is noted. It is shown that the medieval state of Balhae occupying vast areas and adjacent to the volcano no longer existed after the more earlier episodes of eruption.

  12. Beneficios de la hidrocortisona agregada al tratamiento estándar de neumonías en niños de 1 a 5 años, ingresados al Hospital Vicente Corral Moscoso, Cuenca 2014-2015

    OpenAIRE

    Espinoza Cisneros, Michel Viviana

    2016-01-01

    Introducción: La neumonía adquirida en la comunidad permanece como la causa más común de muerte por infección y la octava causa de muerte en los Estados Unidos. La literatura disponible no ha demostrado un beneficio claro del uso de los corticoides en la neumonía. Objetivo: Determinar los beneficios de la Hidrocortisona vía venosa agregada al tratamiento estándar de neumonías en niños de 1 a 5años, ingresados al Hospital Vicente Corral Moscoso. Cuenca 2014. Material y métodos: Se r...

  13. Skrjabinodon heliocostai sp.n. (Nematoda, Pharyngodonidae parasitizing Mabuya frenata (Cope (Lacertilia, Scincidae in Brazil and the reallocation of Skrjabinodon capacyupanquii (Freitas, Vicente & Ibanez in the genus Thelandros Wedl

    Directory of Open Access Journals (Sweden)

    Joaquim J. Vicente

    2000-06-01

    Full Text Available The present report is related to an oxyurid nematode recovered from a reptilian host, Mabuya frenata (Cope, 1862 and the proposal of Skrjabinodon helicostai sp.n., based mainly on findings referring to the lateral alae, position of excretory pore and vulvar apertures, cuticular spines of the tail and aspect of the eggs. The examination of types of Skrjabinodon capacyupanquii (Freitas, Vicente & Ibanez, 1968 from a Peruvian lizard, indicated the reallocation of this species in the genus Thelandros Wedl., 1862, as T. capacyupanquii comb.n., based on the diameter of the caudal appendage of males and position of the vulvar aperture. The new species described herein represents the first report of a species of the genus Skrjabinodon Inglis, 1968 in South America.

  14. SUSTAINABLE DEVELOPMENT MULTIDISCIPLINARY COMMITTEE OF SAN MIGUEL ALMAYA

    Directory of Open Access Journals (Sweden)

    Carolina Mejía-Madero

    2013-04-01

    Full Text Available In this article it is analyzed the role of the “Sustainable Development Multidisciplinary Committee of San Miguel Almaya” created in this community with an otomi background in the State of Mexico, with the purpose to continue with the touristic acts supported in 2006 by the Federal and State Secretaries of Tourism. All with the aim to get benefit from its potential, centered on a lagoon and an extinct volcano. The Committee was created in 2010 because an Eco Tourist Park wanted to be constructed; Even though two stages of the eco tourist park were constructed, it was not concluded; in order to give it continuity, the local authorities decided to negotiate resources. The purpose of the present document is to analyze through the Public Policy Networks the role its members played at the moment of taking decisions to determine if they created the necessary conditions to promote the tourist and the sustainability of the community. The study was based on the methodology of Cruz (2008 and Zabaleta (2006 which identifies the objectives, interests, resources, capabilities, limitations and attributions, between the elements that have an influence on establishing links; in this case, among the actors of the network formed inside the committee. The information was obtained from an empiric and documental investigation that included reunions with the local authorities. One of the most important results is that, the decisions taken within the committee and the exclusion of some of the actors stopped the sustainable development due to a lack of negotiation between its members and differences in their objectives and interests, resulting in a lack of compromise and cooperation to solve the normative, economic, ecologic and cultural problems of the community that could put into risk the touristic potential of the zone.

  15. Studying monogenetic volcanoes with Terrestrial Laser Scanner: Case study at Croscat volcano (Garrotxa Volcanic Zone, Spain)

    Science.gov (United States)

    Geyer Traver, A.; Garcia-Selles, D.; Peddrazzi, D.; Barde-Cabusson, S.; Marti, J.; Muñoz, J.

    2013-12-01

    Monogenetic basaltic zones are common in many volcanic environments and may develop under very different geodynamic conditions. Despite existing clear similarities between the eruptive activity of different monogenetic volcanic fields, important distinctions may arise when investigating in detail the individual eruptive sequences. Interpretation of the deposits and consequently, the reconstruction and characterization of these eruptive sequences is crucial to evaluate the potential hazard in case of active areas. In diverse occasions, erosional processes (natural and/or anthropogenic) may partly destroy these relatively small-sized volcanic edifices exposing their internal parts. Furthermore, despite human activity in volcanic areas is sometimes unimportant due to the remote location of the monogenetic cones, there are places where this form of erosion is significant, e.g. Croscat volcano (Catalan Volcanic Field, Spain). In any case, when studying monogenetic volcanism, it is usual to find outcrops where the internal structure of the edifices is, for one or other reason, well exposed. However, the access to these outcrops may be extremely difficult or even impossible. During the last years, it has been demonstrated that the study of outcrops with problematic or completely restricted access can be carried out by means of digital representations of the outcrop surface. Digital outcrops make possible the study of those areas with natural access limitations or safety issues and may facilitate visualization of the features of interest over the entire outcrop, as long as the digital outcrop can be analysed while navigated in real- time, with optional displays for perspective, scale distortions, and attribute filtering. In particular, Terrestrial Laser Scanning (TSL) instruments using Light Detection And Ranging technology (LIDAR) are capable of capturing topographic details and achieve modelling accuracy within a few centimetres. The data obtained enables the creation of

  16. A Broadly-Based Training Program in Volcano Hazards Monitoring at the Center for the Study of Active Volcanoes

    Science.gov (United States)

    Thomas, D. M.; Bevens, D.

    2015-12-01

    The Center for the Study of Active Volcanoes, in cooperation with the USGS Volcano Hazards Program at HVO and CVO, offers a broadly based volcano hazards training program targeted toward scientists and technicians from developing nations. The program has been offered for 25 years and provides a hands-on introduction to a broad suite of volcano monitoring techniques, rather than detailed training with just one. The course content has evolved over the life of the program as the needs of the trainees have changed: initially emphasizing very basic monitoring techniques (e.g. precise leveling, interpretation of seismic drum records, etc.) but, as the level of sophistication of the trainees has increased, training in more advanced technologies has been added. Currently, topics of primary emphasis have included volcano seismology and seismic networks; acquisition and modeling of geodetic data; methods of analysis and monitoring of gas geochemistry; interpretation of volcanic deposits and landforms; training in LAHARZ, GIS mapping of lahar risks; and response to and management of volcanic crises. The course also provides training on public outreach, based on CSAV's Hawaii-specific hazards outreach programs, and volcano preparedness and interactions with the media during volcanic crises. It is an intensive eight week course with instruction and field activities underway 6 days per week; it is now offered in two locations, Hawaii Island, for six weeks, and the Cascades volcanoes of the Pacific Northwest, for two weeks, to enable trainees to experience field conditions in both basaltic and continental volcanic environments. The survival of the program for more than two decades demonstrates that a need for such training exists and there has been interaction and contribution to the program by the research community, however broader engagement with the latter continues to present challenges. Some of the reasons for this will be discussed.

  17. 75 FR 55270 - Safety Zone; NASSCO Launching of USNS Washington Chambers, San Diego Bay, San Diego, CA

    Science.gov (United States)

    2010-09-10

    ... Chambers, San Diego Bay, San Diego, CA AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: The Coast Guard is establishing a temporary safety zone on the navigable waters of the San Diego Bay in... the Port (COTP) San Diego or his designated representative. DATES: This rule is effective from 9:15 a...

  18. Description of gravity cores from San Pablo Bay and Carquinez Strait, San Francisco Bay, California

    Science.gov (United States)

    Woodrow, Donald L.; John L. Chin,; Wong, Florence L.; Fregoso, Theresa; Jaffe, Bruce E.

    2017-06-27

    Seventy-two gravity cores were collected by the U.S. Geological Survey in 1990, 1991, and 2000 from San Pablo Bay and Carquinez Strait, California. The gravity cores collected within San Pablo Bay contain bioturbated laminated silts and sandy clays, whole and broken bivalve shells (mostly mussels), fossil tube structures, and fine-grained plant or wood fragments. Gravity cores from the channel wall of Carquinez Strait east of San Pablo Bay consist of sand and clay layers, whole and broken bivalve shells (less than in San Pablo Bay), trace fossil tubes, and minute fragments of plant material.

  19. Cartografías acústicas para una fantasía lusa: reconfiguraciones simbólicas del Auto da Barca do Inferno de Gil Vicente desde la propuesta musical de Madredeus

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    Juan E. Villegas-Restrepo

    2014-07-01

    Full Text Available Este ensayo analiza el drama teatral Auto da Barca do Inferno del dramaturgo y músico portugués Gil Vicente (1465-1536? a la luz de la propuesta acústico-literaria del tema O Pastor de la banda musical portuguesa Madredeus (1985- . Con énfasis en el análisis de la figura pastoril, de la doble alegorización de la trama del drama, de la ambigüedad de sus tonalidades acústicas y de la incansable recurrencia a un tercer imaginario poético presentado al lectoroyente en forma de barca, se intentará mostrar cómo dicha canción cuestiona el rígido tabique divisorio insuflado por el dogmático e imperialista maniqueísmo del drama vicentino. This essay analyzes the theatrical drama Auto da Barca do Inferno by Portuguese playwright and musician Gil Vicente (1465-1536? in light of the acoustic-literary theme of the song “O Pastor”, written by the also Portuguese music band Madredeus (1985-. With emphasis on the analysis of pastoral figure, the double allegory of the drama’s plot, the ambiguity of song’s tonalities, and the tireless recurrence to a third poetic imaginary presented to the reader-listener in the shape of a boat, it will try to show how the song questions the rigid parapet established by the dogmatic and imperialist Manichaeism of the Vincentian drama.

  20. Deep long-period earthquakes beneath Washington and Oregon volcanoes

    Science.gov (United States)

    Nichols, M.L.; Malone, S.D.; Moran, S.C.; Thelen, W.A.; Vidale, J.E.

    2011-01-01

    Deep long-period (DLP) earthquakes are an enigmatic type of seismicity occurring near or beneath volcanoes. They are commonly associated with the presence of magma, and found in some cases to correlate with eruptive activity. To more thoroughly understand and characterize DLP occurrence near volcanoes in Washington and Oregon, we systematically searched the Pacific Northwest Seismic Network (PNSN) triggered earthquake catalog for DLPs occurring between 1980 (when PNSN began collecting digital data) and October 2009. Through our analysis we identified 60 DLPs beneath six Cascade volcanic centers. No DLPs were associated with volcanic activity, including the 1980-1986 and 2004-2008 eruptions at Mount St. Helens. More than half of the events occurred near Mount Baker, where the background flux of magmatic gases is greatest among Washington and Oregon volcanoes. The six volcanoes with DLPs (counts in parentheses) are Mount Baker (31), Glacier Peak (9), Mount Rainier (9), Mount St. Helens (9), Three Sisters (1), and Crater Lake (1). No DLPs were identified beneath Mount Adams, Mount Hood, Mount Jefferson, or Newberry Volcano, although (except at Hood) that may be due in part to poorer network coverage. In cases where the DLPs do not occur directly beneath the volcanic edifice, the locations coincide with large structural faults that extend into the deep crust. Our observations suggest the occurrence of DLPs in these areas could represent fluid and/or magma transport along pre-existing tectonic structures in the middle crust. ?? 2010 Elsevier B.V.