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Sample records for san rafael uplift

  1. Equatorial origin for Lower Jurassic radiolarian chert in the Franciscan Complex, San Rafael Mountains, southern California

    Science.gov (United States)

    Hagstrum, J.T.; Murchey, B.L.; Bogar, R.S.

    1996-01-01

    Lower Jurassic radiolarian chert sampled at two localities in the San Rafael Mountains of southern California (???20 km north of Santa Barbara) contains four components of remanent magnetization. Components A, B???, and B are inferred to represent uplift, Miocene volcanism, and subduction/accretion overprint magnetizations, respectively. The fourth component (C), isolated between 580?? and 680??C, shows a magnetic polarity stratigraphy and is interpreted as a primary magnetization acquired by the chert during, or soon after, deposition. Both sequences are late Pliensbachian to middle Toarcian in age, and an average paleolatitude calculated from all tilt-corrected C components is 1?? ?? 3?? north or south. This result is consistent with deposition of the cherts beneath the equatorial zone of high biologic productivity and is similar to initial paleolatitudes determined for chert blocks in northern California and Mexico. This result supports our model in which deep-water Franciscan-type cherts were deposited on the Farallon plate as it moved eastward beneath the equatorial productivity high, were accreted to the continental margin at low paleolatitudes, and were subsequently distributed northward by strike-slip faulting associated with movements of the Kula, Farallon, and Pacific plates. Upper Cretaceous turbidites of the Cachuma Formation were sampled at Agua Caliente Canyon to determine a constraining paleolatitude for accretion of the Jurassic chert sequences. These apparently unaltered rocks, however, were found to be completely overprinted by the A component of magnetization. Similar in situ directions and demagnetization behaviors observed in samples of other Upper Cretaceous turbidite sequences in southern and Baja California imply that these rocks might also give unreliable results.

  2. Tercerización y cooperativas de trabajo asociado en el hospital San Rafael de Tunja

    OpenAIRE

    Lina Marleny López Sánchez

    2010-01-01

    En este documento se destacan los diversos efectos que el funcionamiento de las Cooperativas de Trabajo Asociado (CTA) ha traído en la contratación de personal del Hospital San Rafael de Tunja, a partir de la reestructuración registrada a finales del año 2004. Así mismo, se enfatiza en el cómo la tercerización ha venido adquiriendo importancia en este tipo de instituciones hospitalarias, mediante la prestación de servicios médico-asistenciales,administrativos y servicios gener...

  3. Uranium favorability of the San Rafael Swell area, east-central Utah

    Energy Technology Data Exchange (ETDEWEB)

    Mickle, D G; Jones, C A; Gallagher, G L; Young, P; Dubyk, W S

    1977-10-01

    The San Rafael Swell project area in east-central Utah is approximately 3,000 sq mi and includes the San Rafael Swell anticline and the northern part of the Waterpocket Fold monocline at Capitol Reef. Rocks in the area are predominantly sedimentary rocks of Pennsylvanian through Cretaceous age. Important deposits of uranium in the project area are restricted to two formations, the Chinle (Triassic) and Morrison (Jurassic) Formations. A third formation, the White Rim Sandstone (Permian), was also studied because of reported exploration activity. The White Rim Sandstone is considered generally unfavorable on the basis of lithologic characteristics, distance from a possible source of uranium, lack of apparent mineralization, and the scarcity of anomalies on gamma-ray logs or in rock, water, and stream-sediment samples. The lower Chinle from the Moss Back Member down to the base of the formation is favorable because it is a known producer. New areas for exploration are all subsurface. Both Salt Wash and Brushy Basin Members of the Morrison Formation are favorable. The Salt Wash Member is favorable because it is a known producer. The Brushy Basin Member is favorable as a low-grade resource.

  4. The Marine Ecology of the Laguna San Rafael (Southern Chile): Ice Scour and Opportunism

    Science.gov (United States)

    Davenport, John

    1995-07-01

    Surveys of the intertidal fauna and flora, the plankton, fish, birds and marine mammals of the Laguna San Rafael were carried out by a Raleigh International Expedition in January-February 1993. The Laguna is dominated by the effects of scouring, low temperature and low salinity produced by the calving, tide-water San Rafael glacier that discharges into the Laguna. The fauna and flora are simple and largely limited to a small sector of the Laguna, relatively unaffected by ice. There is a predominance of herbivorous fish, ducks, geese and swans, feeding mainly on macroalgae. Penguins, cormorants, sea lions and porpoises make up the top predators. The strandline is influenced by very heavy rainfall and supports a fauna of freshwater and terrestrial molluscs and earthworms, fed upon by birds and frogs. Large numbers of mussels are present in the north-eastern sector of the Laguna, but many are found in poor condition, high on the shore. It is suggested that poor condition and mortality are caused by large calving waves that dislodge mussels. Such waves are caused by occasional loss of massive quantities of ice from the glacier.

  5. Cyclospora Cayetanesis: descripción del primer caso en el Hospital San Rafael de Alajuela

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    Tatiana Cedeño-Cascante

    2002-06-01

    Full Text Available En Costa Rica se tiene conocimiento de la presencia de al menos un caso reportado de ciclosporidiosis, sin embargo, es probable que la prevalencia de este parásito sea mayor, con el agravante de que no se ha puesto un cuidado especial en el diagnóstico clínico y de laboratorio. En este trabajo se reporta el caso de una paciente de origen noruego, que presentó episodios diarreicos de larga evolución y tratamientos inadecuados después del diagnóstico, y el tratamiento correcto para esta parasitosis resolvió el cuadro, además, es el segundo caso reportado de esta parasitosis en nuestro país y el primero en el Hospital San Rafael de Alajuela, pretende alertar a los profesionales en Medicina y Microbiología, para que presten mayor atención ante la posible existencia de un número mayor de casos.We are reporting a case of a Norwegian patient who presented large as recurrent diarrheic episodes. A diagnosis of cyclosporidiosis was stablish. This is the second case of cyclosporidiosis reported in Costa Rica and the first diagnose are de they patients were give the adecuated tratamient Hospital San Rafael de Alajuela. This is a call for doctors and microbiologist to be prepared for more possible cases.

  6. Early and mid-Holocene age for the Tempanos moraines, Laguna San Rafael, Patagonian Chile

    Science.gov (United States)

    Harrison, Stephan; Glasser, Neil F.; Duller, Geoff A. T.; Jansson, Krister N.

    2012-01-01

    Data about the nature and timing of Holocene events from the Southern Hemisphere, especially in southern South America, are required to provide insight into the extent and nature of past climate change in a region where land-based records are restricted. Here we present the first use of single grain Optically Stimulated Luminescence (OSL) dating of a moraine sequence recording glacial advance along the western side of the Patagonian Icefields. Dates from the Tempanos moraines at Laguna San Rafael (LSR) show that the San Rafael Glacier (SRG) advanced to maximum Holocene positions during the period 9.3 to 9.7 ka and at 5.7 ka. Outwash lying beneath the moraine in its northern portion, dated to 7.7 ka, indicates that the glacier front was also advanced at this time. Since these advances span both the regional early Holocene warm-dry phase (11.5 ka to 7.8 ka) and the subsequent cooling and rise in precipitation in the mid-late Holocene (since 6.6 ka) we infer that the advances of the SRG are not simply climate-driven, but that the glacier has also probably responded strongly to non-climatic stimuli such as internal ice dynamics and the transition between calving and non-calving. Many westwards-flowing glaciers in Patagonia were probably calving during much of the Late Pleistocene and Holocene, so we conclude that establishing robust glacial chronologies where climatic and non-climatic factors cannot be distinguished is likely to remain a challenge.

  7. Muertes por violencias en Argentina: dos estudios de caso en los Municipios de Venado Tuerto y San Rafael Violence-related deaths in Argentina: two case studies in the cities of Venado Tuerto and San Rafael

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    Hugo Spinelli

    2012-12-01

    Full Text Available Este artículo ofrece los resultados de un estudio comparado de dos municipios: Venado Tuerto y San Rafael de la República Argentina, que presentaron tendencias diferentes en relación a las tasas de homicidios por armas de fuego. La metodología combinó dos estrategias de análisis: por un lado, entrevistas semi-estructuradas con informantes clave (funcionarios municipales y provinciales en distintas áreas de la gestión, y referentes de organizaciones no gubernamentales y, por el otro, grupos focales con actores vinculados a la atención médica, la educación y las instituciones religiosas. Los resultados sugieren una distancia muy corta entre las ciudades en las cuales las tasas han aumentado y aquellas en las que han disminuido. La diferencia más significativa es que en Venado Tuerto se encontró una mayor fragilidad en las instituciones públicas, por la falta de articulación entre las mismas. En tanto en San Rafael, los actores entrevistados atribuyen el bajo nivel de conflictividad a una red de prevención de violencias en la cual se coordinan agencias provinciales y municipales. Sin tratarse, ni Venado Tuerto, ni San Rafael, de ciudades violentas en los niveles latinoamericanos más truculentos, ambas muestran resultados diferentes que apuntan directamente a la posibilidad de juntar a las instituciones en un entramado de conversaciones, acuerdos y políticas en conjunto.This article presents the results of a comparative study of two Argentinian cities, namely Venado Tuerto and San Rafael, which revealed different trends in the rates of firearm-related homicides. The methodology combined two strategies of analysis: semi-structured interviews with key informants (municipal and provincial government agents in different areas of management, as well as members of non-governmental organizations and focus groups with actors involved in medical care, education, and religious institutions. The results suggest little difference between

  8. [Violence-related deaths in Argentina: two case studies in the cities of Venado Tuerto and San Rafael].

    Science.gov (United States)

    Spinelli, Hugo; Alazraqui, Marcio; Galeano, Diego; Calandrón, Sabrina

    2012-12-01

    This article presents the results of a comparative study of two Argentinian cities, namely Venado Tuerto and San Rafael, which revealed different trends in the rates of firearm-related homicides. The methodology combined two strategies of analysis: semi-structured interviews with key informants (municipal and provincial government agents in different areas of management, as well as members of non-governmental organizations) and focus groups with actors involved in medical care, education, and religious institutions. The results suggest little difference between cities in which rates have increased and those in which rates have decreased. The most significant difference was that in Venado Tuerto a greater fragility of public institutions was observed due to the lack of articulation between such institutions. In San Rafael, the actors interviewed attribute the low level of conflict to a violence prevention network in which provincial and municipal agencies interact. Although neither city is violent at the most critical Latin American levels, the different results shown in Venado Tuerco and San Rafael indicate the possibility of bringing institutions together in a joint framework of conversations, agreements and policies.

  9. Cyclospora Cayetanesis: descripción del primer caso en el Hospital San Rafael de Alajuela

    Directory of Open Access Journals (Sweden)

    Tatiana Cedeño-Cascante

    2002-06-01

    Full Text Available En Costa Rica se tiene conocimiento de la presencia de al menos un caso reportado de ciclosporidiosis, sin embargo, es probable que la prevalencia de este parásito sea mayor, con el agravante de que no se ha puesto un cuidado especial en el diagnóstico clínico y de laboratorio. En este trabajo se reporta el caso de una paciente de origen noruego, que presentó episodios diarreicos de larga evolución y tratamientos inadecuados después del diagnóstico, y el tratamiento correcto para esta parasitosis resolvió el cuadro, además, es el segundo caso reportado de esta parasitosis en nuestro país y el primero en el Hospital San Rafael de Alajuela, pretende alertar a los profesionales en Medicina y Microbiología, para que presten mayor atención ante la posible existencia de un número mayor de casos.

  10. The Choiyoi volcanic province at 34°S-36°S (San Rafael, Mendoza, Argentina): Implications for the Late Palaeozoic evolution of the southwestern margin of Gondwana

    Science.gov (United States)

    Kleiman, Laura E.; Japas, María S.

    2009-08-01

    The Choiyoi rhyolitic province of Chile and Argentina (23°S-42°S) was emplaced at the SW margin of Gondwana during the Permian. The San Rafael Massif (Mendoza, Argentina, 34°-36°S), is a key area to analyse the relative timing of Choyoi magmatism and related deformation as it bears one of the most complete and well exposed succession. Stratigraphic, structural and magmatic studies indicate that major changes of geodynamic conditions occurred during the Permian since arc-related sequences syntectonic with transpression (lower Choiyoi) were followed by transitional to intraplate, postorogenic suites coeval with transtension (upper Choiyoi). During the Early Permian, a major event of N-NNW dextral transpressional motions deformed the Carboniferous foreland basin in the San Rafael Massif. This event is attributed to the first episode of the San Rafael orogeny and can be related to oblique subduction (Az. 30°) of the Palaeo-Pacific plate. Ca. 280 Ma the inception of voluminous calc-alkaline volcanism (lower Choiyoi) syntectonic with WNW sinistral transpression of the second episode of the San Rafael orogeny, is associated with an eastward migration of the magmatic arc at this latitude. To the southeast of San Rafael, magmatism and transpression continued to migrate inland suggesting that a progressively younger, WNW, sinistral, thick skinned deformation belt broadens into the foreland and can be traced from San Rafael to Sierra de la Ventana, linking the San Rafael orogeny with the Gondwanide orogeny of the Cape Fold Belt in South Africa. This distribution of magmatism and deformation is interpreted as being the consequence of a progressive shallowing of the Palaeo-Pacific plate starting to the north of San Rafael, and culminating with a flat-slab region south of 36°S. Ca. 265 Ma the onset of predominantly felsic volcanism (upper Choiyoi) in San Rafael occurred in a Post-San Rafael extensional setting. Kinematic indicators and strain fabric analyses of San Rafael

  11. Desarrollo de una ayuda técnica para alumnos del colegio San Rafael (5) : cuentacuentos interactivo (I)

    OpenAIRE

    Martín Martín, Gonzalo Guzmán

    2012-01-01

    Este Trabajo Fin de Grado diseña una ayuda técnica para alumnos del colegio del Hospital san Rafael, niños con diferentes grados de discapacidad. A través del refuerzo de la relación causa-efecto, un cuento interactivo servirá como excusa para aumentar sus habilidades cognitivas y de relación con el entorno. Este trabajo forma parte de una pareja: aquí se diseña la ayuda, y se implementa en el Trabajo de Luis Javier Martínez Belotto, si bien las memorias se presentan por separado a fin de mos...

  12. Desarrollo de una ayuda técnica para alumnos del colegio San Rafael (5) : cuentacuentos interactivo (II)

    OpenAIRE

    Martínez Belotto, Luis Javier

    2012-01-01

    Este trabajo Fin de Grado implementa una ayuda técnica para alumnos del colegio del Hospital San Rafael, niños con diferentes grados de discapacidad. A través de la relación causa-efecto, un cuento interactivo servirá como excusa para aumentar sus habilidades cognitivas y de relación con el entorno. El trabajo forma parte de una pareja: aquí se implementa la ayuda diseñada en el trabajo de Gonzalo Guzmán Martín, las memorias se presentan por separado, a fin de mostrar de forma ordenada el pro...

  13. Photogrammetric determination of spatio-temporal velocity fields at Glaciar San Rafael in the Northern Patagonian Icefield

    OpenAIRE

    Maas, H.-G.; Casassa, G.; Schneider, D.; Schwalbe, E.; Wendt, A

    2010-01-01

    Glaciar San Rafael in the Northern Patagonian Icefield, with a length of 46 km and an ice area of 722 km2, is the lowest latitude tidewater outlet glacier in the world and one of the fastest and most productive glaciers in southern South America in terms of iceberg flux. In a joint project of the TU Dresden and CECS, spatio-temporal velocity fields in the region of the glacier front were determined in a campaign in austral spring of 2009. Monoscopic terrestrial image se...

  14. Control estructural en la distribución de las mineralizaciones de uranio del ciclo Choiyoi, bloque de San Rafael, Mendoza Structural control on the distribution of uranium mineralizations of the Choiyoi cycle, San Rafael Massif, Mendoza

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    María S. Japas

    2008-06-01

    Full Text Available Las mineralizaciones más importantes del distrito uranífero Sierra Pintada (Bloque de San Rafael, Mendoza se asocian a las rocas pertenecientes al ciclo magmático Choiyoi. En la sección inferior de este ciclo predominan los yacimientos alojados en areniscas de origen epiclástico. En la sección superior, en cambio, se encuentran pequeñas mineralizaciones vetiformes de escasa importancia económica. Durante el emplazamiento y la acumulación de estas volcanitas y sedimentitas pérmicas prevalecieron dos regímenes de esfuerzo diferentes: transpresional (fase orogénica San Rafael y transtensional (etapa postorogénica, los cuales condicionaron los sistemas mineralizantes. Mediante un estudio de fábrica deformacional se evaluó el grado de control ejercido por las estructuras sobre la distribución de las mineralizaciones de uranio durante estas dos etapas de deformación. De esta forma, se intenta aportar nuevos conocimientos sobre la génesis de estos depósitos en la provincia magmática Choiyoi y generar nuevas guías de exploración. A través de este análisis se pudieron definir tres órdenes de magnitud en el control estructural sobre los depósitos asociados al ciclo Choiyoi inferior, cuyo desarrollo fue condicionado por la fábrica de la fase orogénica sanrafaélica. En el caso de las mineralizaciones alojadas en rocas de la sección superior del ciclo Choiyoi, el campo transtensional post-sanrafaélico ejerció un control, directo o indirecto, durante el proceso mineralizante.The main mineralizations of the Sierra Pintada uranium district, San Rafael Massif, Mendoza, are associated with the Choiyoi volcanic province. In the lower section of this magmatic cycle uranium deposits hosted by epiclastic sandstones are predominant. In the upper section, small vein-type deposits of low economic significance are found instead. During the emplacement of these Permian volcanic and sedimentary sequences two different stress regimes, which

  15. Photogrammetric determination of spatio-temporal velocity fields at Glaciar San Rafael in the Northern Patagonian Icefield

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    H.-G. Maas

    2010-11-01

    Full Text Available Glaciar San Rafael in the Northern Patagonian Icefield, with a length of 46 km and an ice area of 722 km2, is the lowest latitude tidewater outlet glacier in the world and one of the fastest and most productive glaciers in southern South America in terms of iceberg flux. In a joint project of the TU Dresden and CECS, spatio-temporal velocity fields in the region of the glacier front were determined in a campaign in austral spring of 2009. Monoscopic terrestrial image sequences were recorded with an intervallometer mode high resolution digital camera over several days. In these image sequences, a large number of glacier surface points were tracked by subpixel accuracy feature tracking techniques. Scaling and georeferencing of the trajectories obtained from image space tracking was performed via a multi-station GPS-supported photogrammetric network.

    The technique allows for tracking hundreds of glacier surface points at a measurement accuracy in the order of one decimeter and an almost arbitrarily high temporary resolution. The results show velocities of up to 16 m per day. No significant tidal signals could be observed. Our velocities are in agreement with earlier measurements from theodolite and satellite interferometry performed in 1986–1994, suggesting that the current thinning of 3.5 m/y at the front is not due to dynamic thinning but rather by enhanced melting.

  16. La zona de alteración Arroyo La Chilca-Zanjón del Buitre, bloque de San Rafael, Mendoza The Arroyo La Chilca-Zanjón del Buitre alteration zone, San Rafael Massif, Mendoza

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    Nora Rubinstein

    2012-06-01

    Full Text Available La zona de alteración Arroyo La Chilca-Zanjón del Buitre está ubicada en el bloque de San Rafael (35°24'8" S; 68°19'25,8" O, Mendoza. Estudios previos definieron preliminarmente que corresponde a un sistema de tipo pórfro cuprífero vinculado genéticamente al magmatismo gondwánico. Esta área de alteración se desarrolla en una secuencia compuesta por brechas ignimbríticas e ignimbritas traquiandesíticas con intercalaciones de areniscas tobáceas y coladas andesíticas a las que intruyen cuerpos subvolcánicos andesíticos y traquiandesítico-dacíticos. La litología de la secuencia volcánica así como sus características geoquímicas confirman su correlación con la sección inferior del ciclo magmático Choiyoi (Pérmico inferior. El área de alteración presenta una zona potásica con una asociación compuesta por feldespato potásico-cuarzo-magnetita. A ésta se superpone alteración fílica con una asociación de cuarzo-muscovita-pirita-(rutilo acompañada por venillas de cuarzo-pirita. Por último se reconoce una carbonatización tardía. En las proximidades de la zona de alteración aforan vetillas con mineralización de pirita-calcopirita-galena-esfalerita en ganga de cuarzo. La geoquímica de metales indica moderadas anomalías de Ag y Au y pequeñas anomalías de Cu, Mo, Pb y Zn. El análisis estadístico permite definir la existencia de un pulso mineralizante de Cu-Mo y un segundo pulso de Mo reconocido solamente en Zanjón del Buitre. Asimismo se definen dos pulsos de Zn, uno de los cuales estaría genéticamente vinculado al Cu.The Arroyo La Chilca-Zanjón del Buitre alteration zone is located in the San Rafael Massif (35°24'8" S; 68°19'25,8" W, Mendoza. Previous works defined preliminary this deposit as a porphyry copper system genetically linked to the gondwanan magmatism. This alteration zone is hosted by a sequence composed of ignimbritic breccias and ignimbrites of trachyandesitic composition with interbedded

  17. Evaluación del Fertilizante Orgánico Líquido de Lombriz San Rafael en el Cultivo de Rosa cv. Classy Evaluation of the Worm Organic Liquid Fertilizer San Rafael on cv. Classy Rose Crop

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    Fernando Ramírez Castañeda

    2011-12-01

    Full Text Available La aplicación de fertilizantes es una de las principales actividades técnicas que se realizan en el cultivo de rosas, práctica que puede llegar a causar un impacto ambiental importante. El uso de fertilizantes orgánicos en este cultivo ha sido mínimo. Fertilizantes orgánicos como los vermicompuestos aportan elementos, algunos en formas más disponibles, como también mejoran las características físicas de los suelos. El objetivo fue evaluar la adición del fertilizante orgánico líquido de lombriz San Rafael a la fertilización comercial completa y la reducción de un 25% de su composición por cama, midiendo su efecto semanalmente sobre la productividad y la calidad de los tallos florales, el descabece de flor y en análisis foliares en plantas de rosa cv. Classy. Los resultados indican que para los análisis foliares y los diferentes grados de calidad (longitud de tallo y de botón floral no existió evidencia de diferencias estadísticas entre tratamientos. Se encontró diferencia significativa en productividad, siendo mayor el promedio de las plantas tratadas con la fórmula de fertilización completa más el fertilizante orgánico. Para el descabece de la flor se encontró que el tratamiento donde se aplicó la fórmula de fertilización reducida más el fertilizante orgánico, fue significativamente menor en comparación con los otros dos tratamientos.Fertilizer application is one of the main technical activities made in rose crop, but it may cause an important environmental impact. The use of organic fertilizers has been low in this crop. An organic fertilizer as vermicompost contributes with some elements in better available forms, and improves some soil physical characteristics. The purpose was to evaluate the addition of worm liquid organic fertilizer San Rafael to complete commercial fertilization and to decrease 25% of its composition per bed, measuring weekly its effect on yield, degrees of quality flowering stems

  18. Seismic Cycle Deformation and Net Coastal Uplift at San Juanillo, Nicoya Peninsula, Costa Rica

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    Butcher, A. J.; Marshall, J.; Morrish, S.; Ritzinger, B.; Wellington, K.

    2011-12-01

    The Nicoya Peninsula, Costa Rica lies ~60 km inboard of the Middle America Trench where the Cocos Plate subducts under the Caribbean Plate at ~9 cm/yr. This outer fore arc peninsula overlies the seismogenic zone along a mature seismic gap, with an estimated recurrence interval of ~50 yr for large megathrust earthquakes. The last major event (M 7.7, 1950) resulted in 1.0-1.5 m of coseismic uplift along the peninsula's central coast. Since then, gradual coastal subsidence has been observed as the plate interface accumulates interseismic strain. While elastic seismic-cycle deformation produces short-term shoreline fluctuations on the Nicoya Peninsula, net tectonic uplift throughout the Quaternary results in long-term coastal emergence and the formation of marine terraces. At San Juanillo, north of Punta Guiones, emergent carbonate beachrock horizons mark former Holocene shorelines with calibrated radiocarbon ages of 0.9-1.8 ka. The position of these deposits on the upper beach face is consistent with net uplift at ~0.5 m/k.y. Tidal erosion and the undermining of beachrock and adjacent cliffs may reflect coastal inundation associated with the current phase of elastic interseismic subsidence. Inland of the beach, two uplifted marine terraces mark former late Quaternary shorelines with inner edge elevations of ~30 m and ~55 m above mean sea level. The ages of these surfaces are estimated at 80 ka and 125 ka respectively, based on correlation with OSL dated terraces ~80 km to the south and the timing of late Pleistocene sea level high stands (Oxygen Isotope Stages 5a-5e). Long-term net uplift at San Juanillo therefore occurs at a rate of 0.3-0.5 m/k.y. This is the highest uplift rate recorded among seven marine terrace study sites along the Nicoya coast, with the exception of the peninsula's southern tip (Cabo Blanco) where accelerated uplift occurs in response to seamount subduction. Since the 1950 Nicoya earthquake, Costa Rica's population and tourism industry have

  19. Desarrollo de una ayuda técnica para alumnos del colegio San Rafael (8) : control interactivo de estímulos sensoriales. Sala Snoezelen

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    Prado Escudero, Miguel de

    2013-01-01

    El proyecto se ha realizado gracias a la colaboración del Grupo de Displays y Aplicaciones Fotónicas de la Universidad Carlos III de Madrid (GDAF-UC3M) con el Colegio de Educación Especial del Hospital San Rafael de Madrid, que alberga niños, los cuales presentan una serie de disfunciones cognitivas y motoras. A través de este tipo de proyectos se trata de ayudarles intentando hacer su vida más fácil y divertida. El presente proyecto tiene como objetivo potenciar sus habilid...

  20. Manual de técnicas culinarias para el área de alimentación y dietas del Hospital Nacional San Rafael de Santa Tecla

    OpenAIRE

    2013-01-01

    Las técnicas culinarias son uno de los puntos críticos en un establecimiento de alimentos y bebidas, y no se basa solamente en la parte de la manipulación propiamente dicha al momento de su elaboración, sino que radica en algo más complejo y es que el personal es el elemento principal en este proceso. El presenta manual ha sido creado como parte del resultado de los objetivos del proyecto de investigación desarrollado en el Hospital Nacional San Rafael de Santa Tecla. Tiene como propósi...

  1. JUSTICIA COMUNAL Y PROCESOS DE RUPTURA DEL RÉGIMEN Y SISTEMA JURIDICO/FORMAL: EL CASO DE SAN RAFAEL DE ALAJUELA

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    José Carlos Chinchilla Coto Roberto Pineda Ibarra

    2012-10-01

    Full Text Available Este artículo se elaboró a partir de la investigación realizada en la comunidad de San Rafael de Alajuela, durante 1995-96. Dicho trabajo fue abordado desde la perspectiva de la sociología- jurídica. La iniciativa de efectuarla surgió de la necesidad de estudiar los procesos sociales en los cuales se rompe con la "normalidad social"y el orden jurídico estatal. Ello para avanzar en la comprensión de dichos fenómenos.

  2. Human-induced uplift of the Sierra Nevada Mountains and seismicity modulation on the San Andreas Fault

    Science.gov (United States)

    Amos, Colin; Audet, Pascal; Hammond, William C.; Burgmann, Roland; Johanson, Ingrid A.; Blewitt, Geoffrey

    2014-05-01

    We investigate the cause of geodetically observed mountain uplift in the Sierra Nevada, western US. In the process, we reveal a possible human-induced mechanism that may be driving Sierra Nevada uplift, and may also be pushing the San Andreas Fault closer to failure. An initial study of the Sierra Nevada [Hammond et al., Geology, 40, 2012] exploited the complementary strengths of point positions from GPS and blanket coverage measurements from InSAR, to show that contemporary vertical motion of the Sierra Nevada is between 1 - 2 mm/yr relative to the comparatively stable Great Basin to the east. One possible interpretation of this is that the most modern episode of tectonic uplift is still active in the Sierra Nevada. However, we now discover that GPS stations surrounding the southern San Joaquin Valley in California show a pattern of uplift concentrated not only in the Sierra Nevada to the east, but more broadly along the basin margins, including the adjacent central Coast Range to the west. Peak vertical velocities reach values up to 1 - 3 mm/yr. This suggests the San Joaquin Valley plays a key role in the uplift of the Sierra Nevada to the east, with possible implications for the San Andreas Fault to the west. Anthropogenic groundwater depletion in the southern San Joaquin Valley has been massive and sustained, therefore hydrological loading variation might explain contemporary uplift. To test this, we apply a simple elastic model that uses a line load centered along the valley axis, a range of elastic parameters, and published estimates of the integrated rate of mass loss due to groundwater removal over the last decade. Predicted uplift centered along the valley axis matches well with patterns of GPS motion, with the upward vertical rates decaying away from the valley margins. Observed seasonal variability in the vertical GPS positions lends support for this model, showing peak uplift for stations surrounding the valley during the dry summer and fall months. On

  3. A LiDAR Survey of an Exposed Magma Plumbing System in the San Rafael Desert, Utah

    Science.gov (United States)

    Richardson, J. A.; Kinman, S.; Connor, L.; Connor, C.; Wetmore, P. H.

    2013-12-01

    Fields of dozens to hundreds of volcanoes are a common occurrence on Earth and are created due to distributed-style volcanism often referred to as "monogenetic." These volcanic fields represent a significant hazard on both local and regional scales. While it is important to understand the physical states of active volcanic fields, it is difficult or impossible to directly observe active magma emplacement. Because of this, observing an exposed magmatic plumbing system may enable further efforts to describe active volcanic fields. The magmatic plumbing system of a Pliocene-aged monogenetic volcanic field is currently exposed as a sill and dike swarm in the San Rafael Desert of Central Utah. Alkali diabase and shonkinitic sills and dikes in this region intruded into Mesozoic sedimentary units of the Colorado Plateau and now make up the most erosion resistant units, forming mesas, ridges, and small peaks associated with sills, dikes, and plug-like bodies respectively. Diez et al. (Lithosphere, 2009) and Kiyosugi et al. (Geology, 2012) provide evidence that each cylindrical plug-like body represents a conduit that once fed one volcano. The approximate original depth of the currently exposed swarm is estimated to be 0.8 km. Volcanic and sedimentary materials may be discriminated at very high resolution with the use of Light Detection and Ranging (LiDAR). LiDAR produces a three dimensional point cloud, where each point has an associated return intensity. High resolution, bare earth digital elevation models (DEMs) can be produced after vegetation is identified and removed from the dataset. The return intensity at each point can enable classification as either sedimentary or volcanic rock. A Terrestrial LiDAR Survey (TLS) has been carried out to map a large hill with at least one volcanic conduit at its core. This survey implements a RIEGL VZ-400 3D Laser Scanner, which successfully maps solid objects in line-of-sight and within 600 meters. The laser used has a near

  4. Análisis económico de 14 cultivares de garbanzo, sembrados en Barva de Heredia y San Rafael de Alajuela (ING

    Directory of Open Access Journals (Sweden)

    Marvin Rojas A.

    2016-03-01

    The analysis showed that in Barva the cultivars ILC 114, FLIP 86-9C, ILC 482, ILC445, ILC 464 and FLIP 87-5C has good profitability and a net return of each colon invested from 0.27-0.85, also the cost-benefit ratio ranged between 1.27 and 1.85. In San Rafael only four cultivars showed good profitability (ILC 482, FLIP 85-1C, FLIP 85-15C, FLIP 87-7C with a net return for each invested colon among 0.42 and 1.16; the cost benefit ratio varied from 1.42 to 2.16.

  5. Informant consensus factor and antibacterial activity of the medicinal plants used by the people of San Rafael Coxcatlán, Puebla, México.

    Science.gov (United States)

    Canales, M; Hernández, T; Caballero, J; Romo de Vivar, A; Avila, G; Duran, A; Lira, R

    2005-03-21

    Using ethnobotanical techniques, the medicinal flora used by the inhabitants of San Rafael Coxcatlán, Puebla was determined. During the field work, two types of interviews were applied (free listing and semi-structured) to 60 informants, who supplied consistent information concerning the use of 46 species of medicinal plants. Further analysis showed 13 categories of different medicinal use. An informant consensus factor was calculated and 16 species were selected due to their utilization in the treatment of diseases of possible bacterial origin. Of these 16 plants, sequential extractions were made with hexane, ethyl acetate and methanol. The obtained extracts were used to assess their antibacterial activity against 14 bacterial strains; 75% of the plants presented antibacterial activity. The medicinal species Jatropha neopauciflora Pax (Euphorbiaceae) and Juliania adstringens (Schldl.) Schldl. (Julianiaceae) were those that showed the biggest activity. Moreover, these species also had the highest informant consensus factor values.

  6. Control estructural en la distribución de las mineralizaciones de uranio del ciclo Choiyoi, bloque de San Rafael, Mendoza

    Directory of Open Access Journals (Sweden)

    María S. Japas

    2008-06-01

    Full Text Available Las mineralizaciones más importantes del distrito uranífero Sierra Pintada (Bloque de San Rafael, Mendoza se asocian a las rocas pertenecientes al ciclo magmático Choiyoi. En la sección inferior de este ciclo predominan los yacimientos alojados en areniscas de origen epiclástico. En la sección superior, en cambio, se encuentran pequeñas mineralizaciones vetiformes de escasa importancia económica. Durante el emplazamiento y la acumulación de estas volcanitas y sedimentitas pérmicas prevalecieron dos regímenes de esfuerzo diferentes: transpresional (fase orogénica San Rafael y transtensional (etapa postorogénica, los cuales condicionaron los sistemas mineralizantes. Mediante un estudio de fábrica deformacional se evaluó el grado de control ejercido por las estructuras sobre la distribución de las mineralizaciones de uranio durante estas dos etapas de deformación. De esta forma, se intenta aportar nuevos conocimientos sobre la génesis de estos depósitos en la provincia magmática Choiyoi y generar nuevas guías de exploración. A través de este análisis se pudieron definir tres órdenes de magnitud en el control estructural sobre los depósitos asociados al ciclo Choiyoi inferior, cuyo desarrollo fue condicionado por la fábrica de la fase orogénica sanrafaélica. En el caso de las mineralizaciones alojadas en rocas de la sección superior del ciclo Choiyoi, el campo transtensional post-sanrafaélico ejerció un control, directo o indirecto, durante el proceso mineralizante.

  7. VALORACIÓN DE LA ESCALA DE ALVARADO EN PACIENTES SOMETIDOS A UNA APENDICECTOMÍA EN EL HOSPITAL SAN RAFAEL DE TUNJA

    Directory of Open Access Journals (Sweden)

    Daniel Ávila Quitian

    2016-07-01

    Full Text Available Objetivos: Describir el uso de los parámetros de la escala de Alvarado que se usan en pacientes sometidos a apendicetomía en el Hospital San Rafael de Tunja. Métodos: Se realizó un estudio descriptivo de corte transversal. Se tomó una muestra de 160 historias clínicas y reportes quirúrgicos de pacientes sometidos a apendicectomía en el Hospital San Rafael De Tunja en el periodo de enero a diciembre del 2011 y se realizó un análisis estadístico de las variables contempladas por la escala de Alvarado. Resultados: Un 58,1% de los pacientes fueron hombres, la mayor frecuencia de edad estuvo en el rango de 31 a 60 años (35%. El parámetro reportado más frecuente fue el dolor en fosa iliaca derecha con un 96,3% y el menos frecuente fue anorexia con un 14,4%. El diagnóstico postoperatorio más común fue apendicitis aguda y la complicación que más se presentó fue la peritonitis generalizada con un 20,6% de aparición. Conclusión: La escala de Alvarado es una herramienta útil y de fácil aplicación, se recomienda su uso en el diagnóstico de apendicitis aguda, pues su aplicación podría disminuir las apendicetomías innecesarias, complicaciones postquirúrgicas y el uso de pruebas diagnósticas inútiles. Palabras Clave: Apendicitis aguda, escala de Alvarado, apendicectomía.

  8. Rafael Pombo

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    Jorge Enrique Leal G.

    1958-11-01

    Full Text Available Para Rafael Pombo, de quien en este mes recordamos los 125 años del nacimiento parecen haber sido escritas las bellas palabra de Ludwig Borne: "La vida sería un continuo desangramiento sin la poesía; ella nos da lo que la naturaleza nos niega: una edad de oro que jamás envejece, una primavera en continua floración, una felicidad sin nubes, una juventud eterna!".

  9. Magnetic properties of the remagnetized Middle-Ordovician limestones of the Ponón Trehué Formation (San Rafael Block, central-western Argentina): Insights into the Permian widespread Sanrafaelic overprint

    Science.gov (United States)

    Fazzito, Sabrina Y.; Rapalini, Augusto E.

    2016-10-01

    The widespread Sanrafaelic remagnetization reset most of the early Cambrian to mid-Ordovician carbonate platform of the Argentine Precordillera and the calcareous units of the San Rafael Block. We conducted a detailed rock-magnetic study on the Middle-Ordovician limestones of the Ponón Trehué Formation at both limbs of a tight anticline exposed in the San Rafael Block (Mendoza province, central-western Argentina) that are carriers of a syntectonic magnetization of Permian age. We found that the magnetic overprint in the Ponón Trehué Formation is carried by both pyrrhotite and magnetite, with goethite and subordinate haematite likely related to weathering. Hysteresis parameters, frequency dependence of magnetic susceptibility, Cisowski and modified Lowrie-Fuller tests suggest the presence of ultrafine particles of chemical origin. Demagnetization of natural remanent magnetization and of three-axis isothermal remanence confirm pyrrhotite and magnetite as important contributors to the remanence. Both minerals carry the same magnetic syntectonic component suggesting a coeval or nearly coeval remanence acquisition and therefore mineral formation. This and the results of the magnetic fabric analyses indicate an authigenic origin of the magnetic minerals during folding associated with the Sanrafaelic tectonic phase (ca. 280 Ma). Although the chemically active (oxidizing?) fluids expelled from the orogen as it developed in the early Permian is a viable explanation for the Sanrafaelic remagnetization, the role of the nearly coeval magmatism in Precordillera and the San Rafael Block remains to be properly evaluated.

  10. Rafael Maya

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    Jaime Duarte French

    1982-01-01

    Full Text Available Con la generosidad ilimitada que le es propia, me ha solicitado el maestro Rafael Maya que escriba, a manera de introducción de estas páginas, algunas palabras relativas a su obra. Es difícil imaginar un compromiso de mayor responsabilidad. Cuando el maestro se fijó en mí para tan ponderoso y noble encargo, es seguro que tuvo presente, tan solo, mi antigua e inextinguible devoción por su labor intelectual, y dentro de ella, por su poesia, que es, en el conjunto de su producción literaria, la parte de excepción donde el hombre ha volcado, con asombrosa esplendidez, todos los frutos sazonados de sus huertos interiores.

  11. Patrones de diversidad y aspectos etnobotánicos de las plantas arvenses del valle de Tehuacán-Cuicatlán: el caso de San Rafael, municipio de Coxcatlán, Puebla Diversity and ethnobotanical facts of the weeds from Tehuacan-Cuicatlán Valley: San Rafael, Coxcatlán Municipality, Puebla

    Directory of Open Access Journals (Sweden)

    César Albino-García

    2011-09-01

    Full Text Available Este trabajo documenta la riqueza, composición florística, diversidad y conocimiento tradicional de las plantas arvenses de las milpas de San Rafael, Municipio de Coxcatlán, Puebla. De acuerdo con los antecedentes, se probaron 4 hipótesis: 1, la riqueza y diversidad de las plantas arvenses de San Rafael son similares a las registradas en estudios comparables realizados dentro del valle de Tehuacán; 2, más del 50% de estas plantas se usan, y principalmente como forraje; 3, con algunas arvenses, se practica 1 o más de los tipos de manejo tradicional (p. ej., toleradas, protegidas, o fomentadas o inducidas y 4, los agricultores de mayor edad son quienes poseen más conocimientos acerca de estas plantas. Se hicieron muestreos en 12 milpas mediante líneas de Canfield y se entrevistó a 20 agricultores de 32 a 80 años de edad. Se encontraron 42 especies de 12 familias de plantas vasculares, un valor de riqueza intermedio con respecto a los registrados (5-90 spp. en estudios previos realizados en otras zonas del valle de Tehuacán-Cuicatlán. La riqueza registrada en las milpas fue de 6 a 17 especies ( = 10.3 σ = 3.63 y los valores de diversidad de Shannon variaron entre 0.795 y 2.209 ( = 1.494 σ = 0.4440, lo cual está dentro de los límites esperados para comunidades de plantas arvenses. Los agricultores reconocieron entre 20 y 31 especies, pero no se encontró correlación significativa entre su edad y el número de plantas identificadas. Sólo 11 especies se reconocieron como útiles, pero para ninguna hay evidencia de que esté sujeta a algún tipo de manejo. De acuerdo con estos resultados, sólo las hipótesis 1 y 2 pudieron corroborarse, lo que sugiere que aún no es posible establecer generalizaciones en relación con los temas aquí estudiados para las plantas arvenses.This study documents floristic composition, richness, diversity and traditional knowledge of the weeds inhabiting milpas (cornfields of San Rafael, Municipality of

  12. caracterización limnológica de humedales aledaños a San Rafael (Sibaté, Cundinamarca, Colombia

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    Guillot Monroy Gabriel

    2006-06-01

    Full Text Available En los humedales de la vereda San Rafael, localizados sobre la quebrada “La Vieja” a 4 kilómetros de Sibaté
    (2.700 msnm, se realizó un estudio limnológico comparativo entre cuatro cuerpos de agua que mostró
    diferencias entre épocas lluviosa y seca, así como efectos persistentes del derrame de hidrocarburos en el humedal más contaminado. Las variables fisicoquímicas CO2, conductividad, nitrógeno y fósforo disminuyeron en época seca (agosto; la relación nitrógenofósforo en época lluviosa (abril fue mayor. El fitoplancton presentó mayor abundancia de clorofíceas en abril y de euglenofíceas en agosto; la mayor riqueza se registró en clorofíceas y bacilariofíceas; en agosto las cianobacterias aumentaron en riqueza y abundancia y la diversidad Shannon fue inferior a uno; el humedal contaminado presentó una diversidad mínima y menor similaridad, con respecto a otros sitios. El perifiton produjo más biomasa en agosto (0,088 mg/cm2-día que en abril (0,043 mg/cm2-día; la productividad del perifiton aumentó aguas abajo en los sitios de muestreo. Los sustratos rocosos presentaron bacterias coliformes, bacilos y hongos. Los macrófitos más frecuentes fueron c.f. Rhynchospora y Juncus bogotensis; Bulbostylis asperula y Eleocharis acicularis se encontraron solamente aguas arriba del humedal más
    contaminado; Hydrocotile sp. solo se presentó aguas abajo de este punto.

  13. Manual de buenas prácticas de manufactura para el área de alimentación y dietas del Hospital Nacional San Rafael de Santa Tecla

    OpenAIRE

    Ventura Santos, Salomé Danilo

    2013-01-01

    Con el objeto de proteger la salud de los internos del Hospital Nacional San Rafael de Santa Tecla, así como velar por la aplicación de prácticas leales en la preparación de alimentos, se ha tomado como referencia la norma RTCA 67.01.33:06 (Reglamento Técnico Centroamericano) del Ministerio de Salud, para establecer directrices en lo que se refiere a garantizar la inocuidad de los alimentos. Sin embargo es necesario no solo el cumplimiento del Reglamento, sino también construir un sistema ...

  14. La colección de vaciados de escultura que Antonio Rafael Mengs donó a Carlos III para la Real Academia de Bellas Artes de San Fernando

    OpenAIRE

    Negrete Plano, Almudena

    2012-01-01

    Antonio Rafael Mengs, primer Pintor de Cámara de Carlos III, donó al rey la extensa colección de vaciados de escultura, que había ido formando a lo largo de los años en Madrid, Roma y Florencia. La Academia de Bellas Artes de San Fernando, creada poco tiempo antes, necesitaba proveerse de modelos en yeso que sirvieran como pauta y fuente de inspiración a los artistas españoles. El repertorio de moldes y modelos de Mengs llegó a España en un momento decisivo para el desarrollo del arte en nue...

  15. Factores del clima organizacional que influyen en la satisfacción laboral del personal de enfermería, en el servicio de emergencias del Hospital San Rafael de Alajuela, Junio- Noviembre 2008

    OpenAIRE

    Apuy Arias, Lorena Ivette

    2013-01-01

    La presente investigación tuvo como objetivo general conocer los factores del clima organizacional, que influyen en la satisfacción laboral de los funcionarios de enfermería, del Servicio de Emergencias, del Hospital San Rafael de Alajuela. Se realizó durante el período Junio a Noviembre del 2008, a 45 personas, en todos los niveles de Enfermería y en los tres turnos, mediante la aplicación de dos instrumentos: una entrevista estructurada a los funcionarios y la observación directa d...

  16. Sobrepeso y obesidad en relación a condiciones socio-ambientales de Niños residentes en San Rafael, Mendoza

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    Oyhenart, Evelia Edith

    2011-01-01

    Full Text Available El exceso de peso representa un problema emergente en salud pública, su prevalencia varía según zona de residencia, nivel socio-económico, edad y sexo. El objetivo del trabajo fue analizar las prevalencias de sobrepeso y obesidad en niños urbanos y rurales del Departamento de San Rafael, Mendoza, en relación a las condiciones socio-ambientales. Se realizó un estudio antropométrico transversal en 1176 individuos de 6 a 12 años. Se relevaron peso corporal, talla y pliegues subcutáneos tricipital y subescapular. El sobrepeso y la obesidad fueron determinados utilizando los criterios del International Obesity Task Force. El patrón de distribución adiposa se analizó mediante el índice Subescapular/Tricipital (IST. Un valor de IST>1 indicó centralización adiposa. El relevamiento socio-ambiental se realizó mediante encuesta autoadministrada. Los datos fueron procesados por análisis de componentes principales categórico (catACP. El catACP discriminó cuatro grupos según su condición socio-ambiental: Urbano: (Alto, Medio y Empobrecido y Rural. Las prevalencias para sobrepeso fueron de 14,4% y para obesidad de 7,6%, siendo las diferencias sexuales no significativas. La población con sobrepeso presentó en ambos sexos, valores de IST<1. En los varones obesos el IST fue >1 a partir de los 9 años y en las mujeres a los 9 y 12 años. El sobrepeso se distribuyó homogéneamente en los cuatro grupos, en tanto que la obesidad fue mayor en el grupo con características rurales. Los resultados dan cuenta del creciente aumento del sobrepeso con distribución homogénea e independiente de la condición socioeconómica. La obesidad en cambio, se concentra principalmente en la zona rural.

  17. La zona de alteración Arroyo La Chilca-Zanjón del Buitre, bloque de San Rafael, Mendoza

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    Nora Rubinstein

    2012-06-01

    Full Text Available La zona de alteración Arroyo La Chilca-Zanjón del Buitre está ubicada en el bloque de San Rafael (35°24'8" S; 68°19'25,8" O, Mendoza. Estudios previos definieron preliminarmente que corresponde a un sistema de tipo pórfro cuprífero vinculado genéticamente al magmatismo gondwánico. Esta área de alteración se desarrolla en una secuencia compuesta por brechas ignimbríticas e ignimbritas traquiandesíticas con intercalaciones de areniscas tobáceas y coladas andesíticas a las que intruyen cuerpos subvolcánicos andesíticos y traquiandesítico-dacíticos. La litología de la secuencia volcánica así como sus características geoquímicas confirman su correlación con la sección inferior del ciclo magmático Choiyoi (Pérmico inferior. El área de alteración presenta una zona potásica con una asociación compuesta por feldespato potásico-cuarzo-magnetita. A ésta se superpone alteración fílica con una asociación de cuarzo-muscovita-pirita-(rutilo acompañada por venillas de cuarzo-pirita. Por último se reconoce una carbonatización tardía. En las proximidades de la zona de alteración aforan vetillas con mineralización de pirita-calcopirita-galena-esfalerita en ganga de cuarzo. La geoquímica de metales indica moderadas anomalías de Ag y Au y pequeñas anomalías de Cu, Mo, Pb y Zn. El análisis estadístico permite definir la existencia de un pulso mineralizante de Cu-Mo y un segundo pulso de Mo reconocido solamente en Zanjón del Buitre. Asimismo se definen dos pulsos de Zn, uno de los cuales estaría genéticamente vinculado al Cu.

  18. Sedimentology and reservoir heterogeneity of a valley-fill deposit-A field guide to the Dakota Sandstone of the San Rafael Swell, Utah

    Science.gov (United States)

    Kirschbaum, Mark A.; Schenk, Christopher J.

    2010-01-01

    Valley-fill deposits form a significant class of hydrocarbon reservoirs in many basins of the world. Maximizing recovery of fluids from these reservoirs requires an understanding of the scales of fluid-flow heterogeneity present within the valley-fill system. The Upper Cretaceous Dakota Sandstone in the San Rafael Swell, Utah contains well exposed, relatively accessible outcrops that allow a unique view of the external geometry and internal complexity of a set of rocks interpreted to be deposits of an incised valley fill. These units can be traced on outcrop for tens of miles, and individual sandstone bodies are exposed in three dimensions because of modern erosion in side canyons in a semiarid setting and by exhumation of the overlying, easily erodible Mancos Shale. The Dakota consists of two major units: (1) a lower amalgamated sandstone facies dominated by large-scale cross stratification with several individual sandstone bodies ranging in thickness from 8 to 28 feet, ranging in width from 115 to 150 feet, and having lengths as much as 5,000 feet, and (2) an upper facies composed of numerous mud-encased lenticular sandstones, dominated by ripple-scale lamination, in bedsets ranging in thickness from 5 to 12 feet. The lower facies is interpreted to be fluvial, probably of mainly braided stream origin that exhibits multiple incisions amalgamated into a complex sandstone body. The upper facies has lower energy, probably anastomosed channels encased within alluvial and coastal-plain floodplain sediments. The Dakota valley-fill complex has multiple scales of heterogeneity that could affect fluid flow in similar oil and gas subsurface reservoirs. The largest scale heterogeneity is at the formation level, where the valley-fill complex is sealed within overlying and underlying units. Within the valley-fill complex, there are heterogeneities between individual sandstone bodies, and at the smallest scale, internal heterogeneities within the bodies themselves. These

  19. Assessment of nonpoint source chemical loading potential to watersheds containing uranium waste dumps associated with uranium exploration and mining, San Rafael Swell, Utah

    Science.gov (United States)

    Freeman, Michael L.; Naftz, David L.; Snyder, Terry; Johnson, Greg

    2008-01-01

    During July and August of 2006, 117 solid-phase samples were collected from abandoned uranium waste dumps, geologic background sites, and adjacent streambeds in the San Rafael Swell, in southeastern Utah. The objective of this sampling program was to assess the nonpoint source chemical loading potential to ephemeral and perennial watersheds from uranium waste dumps on Bureau of Land Management property. Uranium waste dump samples were collected using solid-phase sampling protocols. After collection, solid-phase samples were homogenized and extracted in the laboratory using a field leaching procedure. Filtered (0.45 micron) water samples were obtained from the field leaching procedure and were analyzed for Ag, As, Ba, Be, Cd, Cr, Cu, Fe, Mn, Mo, Ni, Pb, Sb, Se, U, V, and Zn at the Inductively Coupled Plasma-Mass Spectrometry Metals Analysis Laboratory at the University of Utah, Salt Lake City, Utah and for Hg at the U.S. Geological Survey National Water Quality Laboratory, Denver, Colorado. For the initial ranking of chemical loading potential of suspect uranium waste dumps, leachate analyses were compared with existing aquatic life and drinking-water-quality standards and the ratio of samples that exceeded standards to the total number of samples was determined for each element having a water-quality standard for aquatic life and drinking-water. Approximately 56 percent (48/85) of the leachate samples extracted from uranium waste dumps had one or more chemical constituents that exceeded aquatic life and drinking-water-quality standards. Most of the uranium waste dump sites with elevated trace-element concentrations in leachates were along Reds Canyon Road between Tomsich Butte and Family Butte. Twelve of the uranium waste dump sites with elevated trace-element concentrations in leachates contained three or more constituents that exceeded drinking-water-quality standards. Eighteen of the uranium waste dump sites had three or more constituents that exceeded trace

  20. Resultados paleomagnéticos preliminares en las sedimentitas neo-paleozoicas de la Formación El Imperial, bloque de San Rafael, Mendoza Preliminary paleomagnetic results from the Carboniferous-Permian El Imperial Formation sedimentary rocks in the San Rafael Block, Mendoza province

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    R.N. Tomezzoli

    2006-09-01

    Full Text Available Durante el Pérmico Temprano se desarrolló, en el margen sudoccidental del Gondwana, una extensa faja de deformación contraccional conocida con el nombre de cordón de las Gondwánides. En el extremo occidental de esta faja se instaló, durante el Carbonífero Tardío-Pérmico Temprano, una cuenca de antepaís cuyo relleno se encuentra representado por las sedimentitas de la Formación El Imperial aflorante en el bloque de San Rafael. Esta unidad presenta una sección superior que registra una inversión de las paleopendientes, la cual ha sido interpretada como la primera evidencia de la migración del frente de deformación hacia el antepaís. Se ha encarado un estudio paleomagnético de esta unidad en busca de elementos que permitan acotar la deformación en el tiempo para poder evaluar así el posible carácter diacrónico de la misma. Se presentan y discuten los primeros resultados paleomagnéticos obtenidos en sedimentitas del miembro inferior (Represa Agua del Toro y superior (Puesto La Josefa de la Formación El Imperial. Estas rocas son portadoras de magnetizaciones remanentes reversas portadas principalmente por hematita, de posible edad pérmica. Las posiciones paleopolares obtenidas en ambas localidades no coinciden con las esperadas según la edad de estas rocas, lo que se podría explicar o bien por que no se ha cancelado correctamente la variación secular, por rotaciones según ejes verticales en los bloques de las localidades de muestreo, o bien por la combinación de algunos o de todos estos factores.During the Early Permian an extensive deformation belt well-known as Gondwánides developed in the southwest Gondwana margin. A foreland basin has been settled during the Late Carboniferous - Early Permian in the western end of this strip, and is represented by the El Imperial Formation, which crops out in the San Rafael Block. The upper section of this unit records an inversion of the ancient slopes, which has been interpreted as

  1. Deporte, integración social y políticas sociales en contextos de vulneración de derechos : un estudio del programa Argentina Nuestra Cancha a partir de las representaciones sus operadores en San Rafael, Mendoza, 2011-2012

    OpenAIRE

    Martínez, Eugenia Cristina

    2014-01-01

    Martínez, E. C. (2014). Deporte, integración social y políticas sociales en contextos de vulneración de derechos. Un estudio del programa Argentina Nuestra Cancha a partir de las representaciones sus operadores en San Rafael, Mendoza, 2011-2012 (Tesis de posgrado). Universidad Nacional de Quilmes, Bernal, Argentina. La presente tesis centra la mirada en el análisis del concepto de deporte social que se genera a partir del desarrollo de competencias específicas, por la aplicación del prog...

  2. Fenología reproductiva y dispersión de semillas del arbusto altoandino Monnina salicifolia R&P (Polygalaceae en el embalse San Rafael La Calera - Cundinamarca

    Directory of Open Access Journals (Sweden)

    Sánchez Romero María Paola

    2002-11-01

    Full Text Available RESUMENMonnina salicifoliaR&P (Polygalaceae se reporta como una de las tres especies más abundantesy representativa en la dispersión de semillas por aves en la zona del Embalse San Rafael, LaCalera. Es una especie que presenta fenofases reproductivas de forma simultánea y siendo am-pliamente consumida por aves, por lo que se le podría atribuir como especie clave en la regene-ración de áreas disturbadas, y considerada como pionera en los procesos de sucesión. Entreseptiembre de 2001 y agosto de 2002, se determinó la estacionalidad de las fases reproductivas, la producción de flores y frutos; y la disponibilidad de frutos maduros de veinte individuos entre1.5 y 2 m de altura, mediante conteos directos, quincenalmente, de las estructuras presentes encada individuo. Así mismo, se evaluó la dispersión regional de semillas mediante la utilización deperchas artificiales, como última etapa en el ciclo de vida de Monnina salicifolia. Monnina salicifoliapresentó floración y fructificación durante todo el año de muestreo y de forma continua. Sinembargo, la mayor producción floral coincidió con la estación seca, mientras que lafructificación aumentó su producción durante la estación de lluvias. Patrón observado gene-ralmente en zonas tropicales y característico de algunas especies pioneras. Aparentemente, losfactores climáticos que se tuvieron en cuenta en este estudio no actuaron como señalesdisparadoras en la producción de flores y frutos, quizás a la variación poco significativa deéstos durante el período de muestreo. Con respecto a la dispersión regional de semillas deMonnina salicifolia, fue constante durante los doce meses de muestreo, lo cual pudo favorecersepor la fructificación constante de la planta. El mayor número de semillas encontradas bajo lasperchas, coincidió con la época seca, época de menor disponibilidad de frutos maduros aescala local, lo cual puede deberse a que la dispersión ocurre a escala

  3. Fenología reproductiva y dispersión de semillas del arbusto altoandino Monnina salicifolia R&P (Polygalaceae en el embalse San Rafael, La Calera, Cundinamarca, Colombia

    Directory of Open Access Journals (Sweden)

    Vargas Ríos Orlando

    2004-12-01

    Full Text Available Monnina salicifolia R&P (Polygalaceae se reporta como una de las tres especies más abundantes y representativas en la dispersión de semillas por aves en la zona del Embalse San Rafael La Calera. Es una especie que presenta fenofases reproductivas de forma simultánea y siendo ampliamente consumida por aves, por lo que se le podría atribuir como especie clave en la regeneración de áreas alteradas, y considerada como pionera en los procesos de sucesión. Entre septiembre de 2001 y agosto de 2002, se determinó la estacionalidad de las fases reproductivas, la producción de flores y frutos; y la disponibilidad de frutos maduros de 20 individuos entre 1,5 y 2 m de altura, mediante conteos directos de las estructuras presentes en cada individuo, quincenalmente. Así mismo, se evaluó la dispersión regional de semillas mediante la utilización de perchas artificiales, como última etapa en el ciclo de vida de Monnina salicifolia. Monnina salicifolia presentó floración y fructificación durante todo el año de muestreo y de forma continua. Sin embargo, la mayor producción floral coincidió con la estación seca, mientras que la fructificación aumentó su producción durante la estación de lluvias. Patrón observado generalmente en zonas tropicales y característico de algunas especies pioneras. Aparentemente los factores climáticos que se tuvieron en cuenta en este estudio no actuaron como señales disparadoras en la producción de flores y frutos, quizás debido a la variación poco significativa de estos durante el período de muestreo. Con respecto a la dispersión regional de semillas de Monnina salicifolia, fue constante durante los 12 meses de muestreo, lo cual pudo favorecerse por la fructificación constante de la planta. El mayor número de semillas encontradas bajo las perchas, coincidió con la época seca, época de menor disponibilidad de frutos maduros a escala local, lo cual puede deberse a que la dispersión ocurre a escala

  4. Estado nutricional de la población menor de 5 años en la consulta de crecimiento y desarrollo del distrito San Rafael de Alajuela en el año 2002

    Directory of Open Access Journals (Sweden)

    Manrique Leal Mateos

    2004-06-01

    Full Text Available Justificación y objetivos: Las encuestas nutricionales realizadas en Costa Rica permiten tener una idea general del estado nutricional de la población costarricense. Sin embargo, no facilitan información precisa de lo que sucede en las diferentes áreas de salud del país, ni del desempeño de los programas preventivos. El presente estudio pretende determinar el estado nutricional de la población menor de 5 años que asistió a la consulta de crecimiento y desarrollo en el distrito de San Rafael de Alajuela, durante el periodo 2002, y comparar la situación nutricional de la población en estudio, con los resultados de obtenidos en la última Encuesta Nacional de Nutrición, de 1996. Métodos: Se trabajó con la población de niños(as menores de 5 años que asistió a la consulta de crecimiento y desarrollo del primer nivel de atención en salud. A partir de la muestra obtenida, se caracterizó a la población, según los indicadores antropométricos peso/edad, talla! edad y peso/talla. Resultados: Se revisó un total de 275 expedientes. La mediana de edad fue de 18 meses y la edad más frecuente de consulta fue de 12 meses. Según el indicador peso/edad, 33 (12% niños(as presentaron algún grado de desnutrición y 9 (3.3%, sobrepeso. El número de niños(as con problemas de desnutrición y sobrepeso fue semejante en ambos sexos; igualmente, la cantidad de pacientes con problemas de desnutrición y sobrepeso en el grupo de niños(as menores de 1 año, fue semejante al de 1 a 4 años. Conclusión: Al comparar los resultados obtenidos con la última encuesta nacional de nutrición, se determinó que los (as niños(as que asisten a la consulta de crecimiento y desarrollo, presentaron un mejor estado nutricional que el de la población nacional.

  5. Uplifting Leadership

    Science.gov (United States)

    Hargreaves, Andy; Boyle, Alan

    2015-01-01

    To find out how organizations turn failure into success, Andrew Hargreaves and his colleagues studied more than 15 business, sports, and education organizations. They found that the secret to these organizations' success came down to just two words: uplifting leadership. Uplifting leadership, write Hargreaves and Boyle in this article, raises the…

  6. Análisis geométrico de la fracturación del frente de levantamiento de la Sierra de San Luis Geometric analysis of the fractures of the uplift front of the Sierra de San Luis

    Directory of Open Access Journals (Sweden)

    Daniel A. Sales

    2010-12-01

    Full Text Available Con el propósito de conocer nuevos aspectos sobre la fracturación que caracteriza a los márgenes occidental y septentrional de la sierra de San Luis, donde se ha concentrado el levantamiento andino, se relevó a lo largo de los mismos una población de 975 fallas conteniendo estrías de fricción. Dichos datos fueron analizados mediante programas de computación que discriminan la participación proporcional de cada uno de los componentes del vector rechazo total, en función de la actitud espacial de las superficies de fallas y del ángulo de rake de las estrías. En el frente serrano septentrional, las fallas muestran un notorio predominio de la componente horizontal longitudinal (L del vector rechazo total, pese a la diferente actitud espacial de las fracturas relevadas. Una situación muy semejante se observó en el frente occidental, aunque entre los sectores norte, centro y sur del mismo se reconocieron diferentes relaciones proporcionales entre el vector rechazo horizontal longitudinal (L y las componentes del rechazo horizontal transversal (T y vertical (V. Los resultados destacan una importante participación de la componente horizontal longitudinal en la deformación global del macizo, pero el rol de los movimientos transcurrentes en el levantamiento y deformación de este bloque pampeano, no ha podido ser aún cuantificado.In order to address new issues regarding the fractures that characterize the western and northern margins of the Sierra de San Luis, where the Andean uplift has been concentrated, a population of 975 faults with preserved slickenlines was surveyed. Such data were analyzed through a software for calculating the proportional participation of each component of the total slip vector, through strike, dip and slickenline rake data. At the northern range front, fault data show a strong imposition of the longitudinal horizontal component (L, despite the variety of fault attitudes in space. A similar situation was

  7. Distribución y abundancia de larvas de Munida gregaria (Fabricius, 1793, Sergestes arcticus Kröyer, 1855 y Neotrypaea uncinata (H. Milne-Edwards, 1837 entre Puerto Montt (41°30'S y Laguna San Rafael (46°30'S, sur de Chile

    Directory of Open Access Journals (Sweden)

    Armando Mujica

    2013-11-01

    Full Text Available Se describe la distribución y abundancia de los estadios larvales de Munida gregaria, Neotrypaea uncinata y Sergestes arcticus, capturadas en cinco cruceros oceanográficos efectuados, en los fiordos y canales australes de Chile, entre Puerto Montt (41°30'S y Laguna San Rafael (46°30'S. Sobre la base de diferentes masas de aguas, se caracterizaron tres áreas oceanográficas, donde se determinó la abundancia y frecuencia de ocurrencia de los estadios larvales de las tres especies capturadas en los diferentes cruceros. Se aplicaron estadígrafos para relacionar la abundancia y frecuencia de ocurrencia de los estadios larvales, las zonas oceanográficas definidas y los años de muestreo, lo que permitió discriminar áreas de desove y la posible dispersión de larvas de las especies estudiadas en la zona de estudio.

  8. Rafael Moneo kavandab Prado muuseumi juurdeehituse

    Index Scriptorium Estoniae

    1998-01-01

    Hispaania arhitekt Rafael Moneo võitis Madriidi Prado kunstimuuseumi juurdeehituse rahvusvahelise arhitektuurivõistluse. 1819. a. rajatud muuseumiga liidetakse naabruses asuv Los Jeronimose klooster.

  9. Rafael Moneo kavandab Prado muuseumi juurdeehituse

    Index Scriptorium Estoniae

    1998-01-01

    Hispaania arhitekt Rafael Moneo võitis Madriidi Prado kunstimuuseumi juurdeehituse rahvusvahelise arhitektuurivõistluse. 1819. a. rajatud muuseumiga liidetakse naabruses asuv Los Jeronimose klooster.

  10. Rafael Armenteros (1922-2004)

    CERN Multimedia

    2004-01-01

    Rafael Armenteros passed away on Friday, 5 March, to the immense sadness of his family and friends. Having begun his scientific career at the University of Manchester, he took part in the observation of cosmic rays at the Pic du Midi laboratory with Professors Blackett and Butler and participated in the research of the Ecole Polytechnique team led by Professor Leprince-Ringuet consisting of Gregory, Lagarrigue, Muller and Peyrou. He subsequently worked at CERN with Peyrou, who was by then Head of the Track Chamber (TC) Division. In this early part of his professional career, he was directly involved in the discovery of many elementary particles, including two strange neutral particles (Lambda and K0), and in the observation of the decay of the Xi-minus into a Lambda and a Pi-minus. He then took part in CERN's most famous experiments, the bubble chamber experiments, in which he was one of the leading figures right up to the last one. Following the exceptional scientific results of the 1960s, these experiments...

  11. Vida y pensamiento de Rafael Barrett

    OpenAIRE

    Corral Sánchez-Cabezudo, Francisco

    1991-01-01

    La trayectoria intelectual de Rafael Barrett representa el caso particular de un "joven del 98" trasplantado a América. Con el inicio del siglo, Barrett abandona la bohemia madrileña en la que consta su relación personal con valle, Maeztu, Baroja, Bueno y Fuente. En América produce una notable obra intelectual, a pesar de su corta vida. Desde unos inicios filosóficos Nietzscheanos, muy identificados con el tono y la temática del joven 98, Barrett va evolucionando (como consecuencia de su prop...

  12. GPS Imaging of Sierra Nevada Uplift

    Science.gov (United States)

    Hammond, W. C.; Blewitt, G.; Kreemer, C.

    2015-12-01

    Recent improvements in the scope and precision of GPS networks across California and Nevada have allowed for uplift of the Sierra Nevada to be observed directly. Much of the signal, in the range of 1 to 2 mm/yr, has been attributed to lithospheric scale rebound following massive groundwater withdrawal in the San Joaquin Valley in southern California, exacerbated by drought since 2011. However, natural tectonic deformation associated with long term uplift of the range may also contribute to the observed signal. We have developed new algorithms that enhance the signal of Sierra Nevada uplift and improve our ability to interpret and separate natural tectonic signals from anthropogenic contributions. We apply our new Median Interannual Difference Adjusted for Skewness (MIDAS) algorithm to the vertical times series and a inverse distance-weighted median spatial filtering and Delaunay-based interpolation to despeckle the rate map. The resulting spatially continuous vertical rate field is insensitive to outliers and steps in the GPS time series, and omits isolated features attributable to unstable stations or unrepresentative rates. The resulting vertical rate field for California and Nevada exhibits regionally coherent signals from the earthquake cycle including interseismic strain accumulation in Cascadia, postseismic relaxation of the mantle from recent large earthquakes in central Nevada and southern California, groundwater loading changes, and tectonic uplift of the Sierra Nevada and Coast Ranges. Uplift of the Sierra Nevada extends from the Garlock Fault in the south to an indefinite boundary in the north near the latitude of Mt. Lassen to the eastern Sierra Nevada range front in Owen's Valley. The rates transition to near zero in the southern Walker Lane. The eastern boundary of uplift coincides with the highest strain rates in the western Great Basin, suggesting higher normal fault slip rates and a component of tectonic uplift of the Sierra Nevada.

  13. Gracia, misterio y nostalgia de Rafael Alberti

    Directory of Open Access Journals (Sweden)

    Eduardo Carranza

    1967-12-01

    Full Text Available Existen algunos poemas, a veces unos cuantos versos, dotados de una extraordinaria capacidad germinal y suscitadora. De los inmortales eneasílabos de la Canción de otoño en primavera descienden multitud de elegías contemporáneas. Y al releer ahora la obra juvenil de Rafael Alberti, -su Marinero en tierra- tan vivaz, tan optimista y garbosa, tan pintada de azul marino, de rojo amoroso y de verde eglógico, hemos recordado un viejo y precioso romancillo de Juan Ramón Jiménez en el que parecen estar ya implícitas algunas de las mejores claridades albertianas.

  14. Los 8 nombres de [Rafael] Picasso

    OpenAIRE

    Pérez-Bustamante Mourier, Ana Sofía

    2003-01-01

    Estudio detallado del poemario "Los 8 nombres de Picasso" (1970), de Rafael Alberti: reconstrucción de las relaciones entre el poeta gaditano y el pintor malagueño, contextualización del libro en la poesía ecfrástica de Alberti y en su etapa de exilio, y análisis minucioso de la estructura del poemario, cuya cuidadosa disposición revela, más allá de una ordenación "cronológica", una estructura arquetípica en parte análoga a la de los mejores libros del poeta(edad dorada/paraíso perdido-crisis...

  15. Issues in IIA Uplifting

    Energy Technology Data Exchange (ETDEWEB)

    Kallosh, Renata; Soroush, Masoud

    2006-12-12

    Moduli stabilization in the type IIA massive string theory so far was achieved only in the AdS vacua. The uplifting to dS vacua has not been performed as yet: neither the analogs of type IIB anti-D3 brane at the tip of the conifold, nor the appropriate D-terms have been identified. The hope was recently expressed that the F-term uplifting may work. We investigate this possibility in the context of a simplified version of the type IIA model developed in hep-th/0505160 and find that the F-term does not uplift the AdS vacua to dS vacua with positive CC. Thus it remains a challenging task to find phenomenologically acceptable vacua in the type IIA string theory.

  16. Eesti kunstniku Rafael Arutjunjani personaalnäitus Riias

    Index Scriptorium Estoniae

    2006-01-01

    12.05 - 9.06 2006 Rafael Arutjunjani tööde näitusest Nelia galeriis. 19.05.2006 tema loomingule pühendatud raamatu "Raphael Arutyunyan artistic production" presentatsioonist Riias Janis Roze raamatupoes

  17. Arno Rafael Cederberg ja Eesti ajalooteadus / Hans Kruus

    Index Scriptorium Estoniae

    Kruus, Hans, 1891-1976

    2005-01-01

    Soome ajalooprofessorist Arno Rafael Cederbergist (1885-1948). Tartu Ülikoolis töötades oli tema peamine õppe-ja uurimisaine Eesti ja Põhjamaade ajalugu. Ilm.: Eesti Kirjandus, 1935, nr. 6., lk. 254-255

  18. Arno Rafael Cederberg ja Eesti ajalooteadus / Hans Kruus

    Index Scriptorium Estoniae

    Kruus, Hans, 1891-1976

    2005-01-01

    Soome ajalooprofessorist Arno Rafael Cederbergist (1885-1948). Tartu Ülikoolis töötades oli tema peamine õppe-ja uurimisaine Eesti ja Põhjamaade ajalugu. Ilm.: Eesti Kirjandus, 1935, nr. 6., lk. 254-255

  19. Eesti kunstniku Rafael Arutjunjani personaalnäitus Riias

    Index Scriptorium Estoniae

    2006-01-01

    12.05 - 9.06 2006 Rafael Arutjunjani tööde näitusest Nelia galeriis. 19.05.2006 tema loomingule pühendatud raamatu "Raphael Arutyunyan artistic production" presentatsioonist Riias Janis Roze raamatupoes

  20. Entrevista com o professor Rafael Straforini

    Directory of Open Access Journals (Sweden)

    Demian Garcia Castro

    2015-07-01

    Full Text Available Com vivência profissional na Educação Básica e na Superior, além de experiência de pesquisa em diferentes instituições universitárias nos estados de São Paulo e do Rio de Janeiro, o professor Rafael Straforini pode ser considerado uma das novas vozes importantes na área do Ensino de Geografia. Assim como na edição anterior, uma vez mais utilizamo-nos de plataforma digital e, na conexão direta Rio-Campinas, tivemos a oportunidade de abordar questões como a Geografia na Educação Infantil e nas séries iniciais do Ensino Fundamental, o currículo e a formação de professores, além de aproveitar um pouco para conversar sobre Geografia Histórica e a Revista Brasileira de Educação em Geografia. Agradecemos a Straforini pela oportunidade e deixamos o leitor com o resultado desse encontro virtual.

  1. Conversando con... RAFAEL MONEO: el arquitecto y enseñante de arquitectura

    OpenAIRE

    Molina Siles, Pedro Javier; Torres Barchino, Ana María

    2014-01-01

    [EN] Interview with Rafael Moneo [ES] Entrevista con Rafael Moneo Molina Siles, PJ.; Torres Barchino, AM. (2014). Conversando con... RAFAEL MONEO: el arquitecto y enseñante de arquitectura. EGA. Revista de Expresión Gráfica Arquitectónica. 19(24):36-49. doi:10.4995/ega.2014.3085. 36 49 19 24

  2. Paleomagnetic study of Cambrian Ordovician rocks in the Eastern Precordillera of Argentina: some constraints on the Andean uplift of this block

    Science.gov (United States)

    Rapalini, A. E.; Bordonaro, O.; Berquo, T. S.

    2000-11-01

    A paleomagnetic study on several carbonatic units (limestones to dolomites) of the Argentine Precordillera, spanning the Middle Cambrian to Arenig, is reported. Sampling was done at 23 sites (140 samples) in five localities of the Eastern Precordillera of San Juan province: Zonda (1), Juan Pobre (2) and La Flecha (3) creeks, Loma Redonda (4) and Cerro Pedernal de los Berros (5). Standard AF and thermal demagnetization indicated two different magnetic behaviors. Samples from localities 1 and 2 showed a single, post-tectonic magnetic component attributed to a Recent viscous or chemical remagnetization. Samples from localities 3 to 5 showed two magnetic components: a low unblocking temperature (350°C) magnetization coincident with that found at the previous localities and a high temperature one (up to 500°C). This second component was also found to be post-folding (post-Devonian?) and its in situ mean direction is Dec: 277.1°, Inc: 69.4, α95: 9.3°, N=10. This is not consistent with any expected direction for the study area between Carboniferous and Recent times. It is therefore inferred that the rocks carrying it underwent substantial tectonic rotation since its recording. Comparison with the magnetization carried by similar Early Ordovician limestones in the Central Precordillera and the San Rafael Block, and assigned to a Permian remagnetizing event, suggests that the same process affected the carbonatic rocks in the Eastern Precordillera and, therefore, the age of the component is likely Permian. Restoration of the in situ mean direction to the expected direction for a Permian remagnetization can be obtained by a 40° ccw rotation around an axis plunging 30° to N30°E. This is compatible with uplifting of the Eastern Precordillera as a series of quasi-rigid blocks along a major E dipping N to NE backthrust during the Andean orogeny.

  3. V poiskah garmonii / Rafael Danieljants ; interv. Tamara Unanova

    Index Scriptorium Estoniae

    Danieljants, Rafael

    2000-01-01

    Armeenia päritolu skulptor Rafael Danieljants (EKA, 1984) oma töödest, õpetajatööst Maardu kunstikoolis jm. Viimane tema tööde näitus oli Armeenia kultuurikeskuses Tallinnas : eksponeeriti armeeniateemalisi skulptuure

  4. Euroopa arhitektuuriauhind Rafael Moneole / Ingrid Lillemägi

    Index Scriptorium Estoniae

    Lillemägi, Ingrid

    2001-01-01

    2001. a. Mies van der Rohe preemia võitjad: peapreemia - hispaania arhitekt Rafael Moneo, noore arhitekti preemia - saksa arhitekt Florian Nagler. Eestist esitati preemia saamiseks De la Gardie' kaubamaja (Andres Alver, Tiit Trummal, Tarmo Laht), Rocca al Mare koolimaja (Emil Urbel, Indrek Erm, Ülo Peil, Taso Mähar) ja elamud Suurupis (Urmas Muru, Peeter Pere). 1 ill

  5. Euroopa arhitektuuriauhind Rafael Moneole / Ingrid Lillemägi

    Index Scriptorium Estoniae

    Lillemägi, Ingrid

    2001-01-01

    2001. a. Mies van der Rohe preemia võitjad: peapreemia - hispaania arhitekt Rafael Moneo, noore arhitekti preemia - saksa arhitekt Florian Nagler. Eestist esitati preemia saamiseks De la Gardie' kaubamaja (Andres Alver, Tiit Trummal, Tarmo Laht), Rocca al Mare koolimaja (Emil Urbel, Indrek Erm, Ülo Peil, Taso Mähar) ja elamud Suurupis (Urmas Muru, Peeter Pere). 1 ill

  6. V poiskah garmonii / Rafael Danieljants ; interv. Tamara Unanova

    Index Scriptorium Estoniae

    Danieljants, Rafael

    2000-01-01

    Armeenia päritolu skulptor Rafael Danieljants (EKA, 1984) oma töödest, õpetajatööst Maardu kunstikoolis jm. Viimane tema tööde näitus oli Armeenia kultuurikeskuses Tallinnas : eksponeeriti armeeniateemalisi skulptuure

  7. Uplift and seismicity driven by groundwater depletion in central California.

    Science.gov (United States)

    Amos, Colin B; Audet, Pascal; Hammond, William C; Bürgmann, Roland; Johanson, Ingrid A; Blewitt, Geoffrey

    2014-05-22

    Groundwater use in California's San Joaquin Valley exceeds replenishment of the aquifer, leading to substantial diminution of this resource and rapid subsidence of the valley floor. The volume of groundwater lost over the past century and a half also represents a substantial reduction in mass and a large-scale unburdening of the lithosphere, with significant but unexplored potential impacts on crustal deformation and seismicity. Here we use vertical global positioning system measurements to show that a broad zone of rock uplift of up to 1-3 mm per year surrounds the southern San Joaquin Valley. The observed uplift matches well with predicted flexure from a simple elastic model of current rates of water-storage loss, most of which is caused by groundwater depletion. The height of the adjacent central Coast Ranges and the Sierra Nevada is strongly seasonal and peaks during the dry late summer and autumn, out of phase with uplift of the valley floor during wetter months. Our results suggest that long-term and late-summer flexural uplift of the Coast Ranges reduce the effective normal stress resolved on the San Andreas Fault. This process brings the fault closer to failure, thereby providing a viable mechanism for observed seasonality in microseismicity at Parkfield and potentially affecting long-term seismicity rates for fault systems adjacent to the valley. We also infer that the observed contemporary uplift of the southern Sierra Nevada previously attributed to tectonic or mantle-derived forces is partly a consequence of human-caused groundwater depletion.

  8. Mechanisms of Tectonic Uplift in the Santa Cruz Mountains, CA

    Science.gov (United States)

    Gudmundsdottir, M. H.; Hilley, G. E.; Rood, D. H.; Finkel, R. C.

    2008-12-01

    GPS velocity measurements in the San Francisco Bay Area limit transpression across the region to San Andreas Fault (SAF) undergoes a local change in orientation by approximately 8-10 degrees. While active seismicity and surface velocities suggest that the restraining bend accommodates the geodetically observed contraction in this area, low temperature thermochronology, uplifted marine terraces, and uplifted Pliocene marine units indicate that contraction and uplift may be more uniformly distributed than can be explained exclusively by the restraining bend. Thus, it is unclear to what degree the geologic strain accommodated throughout this region results from plate-normal contraction versus restraining-bend tectonics. To determine the relative roles of these two factors, we measured cosmogenic radionuclide erosion rates from four basins flanking the southwestern SCM, whose topography results from deformation associated with the SAF. The southernmost basin is seated within the heart of the SCM restraining bend, while basins farther north are located progressively farther away from the bend. Thus, if restraining-bend tectonics dominate the deformation of the area, we expect rapid erosion rates to be focused in these areas, while more uniform rock uplift and erosion rates may be indicative of regional transpression. Erosion rates from basins within the restraining bend are about 0.53 mm/yr, twice as high as those north of the bend (0.24 - 0.31 mm/yr). The clear spatial association of high erosion rates with the restraining bend suggests that at least half of the observed uplift and erosion may result from restraining-bend deformation. Accordingly, relatively uniform erosion rates north of the bend may result from either rock uplift that is driven by isostatic unloading of the upper crust or limited regional transpression.

  9. Académico Correspondiente. RAFAEL VILLOTA VILLOTA

    Directory of Open Access Journals (Sweden)

    Jaime Eraso López

    2016-04-01

    Full Text Available

    Con estas palabras quiero destacar la vida del Dr. Rafael Villota Villota, el amigo de siempre, el compañero de nuestras faenas médicas en el Hospital San Pedro, en la Clínica Maridiaz del antiguo Seguro Social y en el Capítulo de la Academia, durante muchos años.

    Lo suyo viene a ser una pérdida irreparable, lo es para su esposa Isabel, para sus hijos, nietos y familiares cercanos, para sus conciudadanos, para la Academia Nacional de Medicina, Capítulo de Nariño, a la cual sirvió de manera ejemplar.

    Fue un ser humano excepcional, una verdadera gloria de la medicina nariñense. El honró a la Academia con la dignidad de su conducta ejemplar. Su vida estuvo plena de virtudes. Tan agradable era su compañía que en Navidad prendía corazones sin necesidad de mecha. Consentido y cariñoso, su estirpe y su nobleza en llave con Isabelita, siempre los hizo ver como un matrimonio feliz. Alguna vez, en una noche incierta, en su casa, cuando el electrocardiograma no daba señales, contribuí a su alegría con la atropina, cuando Isabelita no estaba dispuesta a dejarlo solo. Él fue uno de los más puros y radiantes valores, con unas convicciones éticas firmes en su paso por la vida. Ahora, está en el seno del Señor junto con Eduardo Trujillo, Ricardo Zarama, Wladimiro Álvarez, Néstor Moncayo, Alfonso Rebolledo, Luis Eduardo Martínez, Luis Carlos Moncayo Navarrete, fundadores del Capítulo de Nariño de la Academia Nacional de Medicina en 1996. Con ellos, la confianza fue total, llena de naturalidad y afecto, dispuestos a encontrar nuevos horizontes para la Institución. Fueron en verdad, seres paradigmáticos, incomparables.

    Su muerte, ocurrida ya hace más de dos meses, afecta en grado mayor a quienes tuvimos el privilegio de su amistad, empeñados en mejorar los servicios hospitalarios, tal como ocurrió en el Hospital San Pedro y en la Clínica del Seguro Social. Bajo la Dirección del Dr. Luis Díaz del Castillo

  10. Oscuridad y exilio interior en la obra de Rafael Alberti

    OpenAIRE

    Casado Hernández, Marina

    2015-01-01

    Rafael Alberti, miembro de la Generación del 27, es autor de una dilatada obra en la que la luz y su opuesto, la sombra, juegan un papel determinante. La oscuridad es, precisamente, el eje que sostiene toda su poética, junto a una esperanza constante de escapar hacia la luz. Dicha oscuridad se combina con un sempiterno sentimiento de desarraigo hacia el presente que el propio autor definió como “la nostalgia inseparable”. Alberti fue uno de los muchos intelectuales españoles que sufrieron el ...

  11. CABO DE RAFAEL TORRES OSORIO [Material gráfico

    OpenAIRE

    Anonymous

    1980-01-01

    EL ESPECIALISTA ALEJANDRO C. MORENO Y MARRERO LE ATRIBUYE EL DISEÑO DEL AJEDREZADO TRIPLE, EL AJEDREZADO EN MUESCAS Y EL AJEDREZADO PIRAMIDAL. PARA LA CONFECCIÓN DE LA DECORACIÓN DEL CABO SE EMPLEAN UNAS SERIES DE AÑILLAS A LAS QUE SE LES REALIZAN INCISIONES E INCRUSTACIONES FORMANDO LAS FIGURAS DESEADAS POR EL MAESTRO. RAFAEL TORRES OSORIO DESTACÓ POR SU INACABABLE CREATIVIDAD. Copia digital. Madrid: Ministerio de Educación, Cultura y Deporte. Subdirección General de Coordinación Bibl...

  12. Conversas sobre transmedia storytelling: alternativas produtivas - Entrevista com Rafael Nunes

    Directory of Open Access Journals (Sweden)

    Fernanda Castilho

    2014-07-01

    Full Text Available Rafael Antunes realizou recentemente em Portugal projetos de ficção orientados pela lógica transmedia aplicada ao storytelling. Tanto Lápis Azul como Mutter conseguiram ter impacto na mídia portuguesa, mas o produtor admite que ainda existe um grande abismo entre os projetos transmídia e a lógica de produção tradicional do cinema e da televisão. Rafael Antunes integra o projeto CIAKL, European course in entrepreneurship for the creative industries, que envolve várias Universidades Europeias e empresas do ramo na procura de novos modelos de negócio para as indústrias criativas. Para além disso, desenvolve o seu doutoramento em Ciências da Comunicação na Universidade Lusófona de Humanidades e Tecnologias, instituição que tem apoiado o desenvolvimento dos seus projetos em conjunto com a emissora SIC (Sociedade Independente de Comunicação, na qual trabalha desde 2001. O seu currículo ainda conta com a realização de curtas-metragens premiados por festivais portugueses.

  13. Modelos de espacialidade na obra de Rafael Courtoisie

    Directory of Open Access Journals (Sweden)

    Luis Alberto Brandão Santos

    2015-10-01

    Full Text Available A obra do escritor uruguaio Rafael Courtoisie é tomada como ponto de partida para uma reflexão sobre alguns modelos por meio dos quais a literatura contemporânea exercita o que se pode designar, genericamente, de “espacialidade”. Esse termo não diz respeito ao modo como o texto literário representa espaços extratextuais. Na verdade, atua na direção contrária, tornando viável que, no âmbito da literatura, se problematize o que é entendido como espaço. Os três modelos de espacialidade que abordamos são: a visão, o tato e o movimento. Da obra de Courtoisie, foram selecionados os seguintes livros: Estado sólido (1996, Umbría (1999 e Música para sordos (2002.

  14. Milliseid muutusi näete 21. sajandi koolis? / Eduardo Chaves, Ria Sluiter, Rafael Enriques

    Index Scriptorium Estoniae

    Chaves, Eduardo

    2007-01-01

    Küsimusele vastavad: Microsofti programmi "Partners in Learning" nõunik Brasiiliast Eduardo Chaves, Hollandi keskhariduse spetsailist Ria Sluiter ja Mexico Interaktiivse Lastemuuseumi juhataja Rafael Enriques 21. sajandi koolist oma maa hariduskorralduste põhjal

  15. Milliseid muutusi näete 21. sajandi koolis? / Eduardo Chaves, Ria Sluiter, Rafael Enriques

    Index Scriptorium Estoniae

    Chaves, Eduardo

    2007-01-01

    Küsimusele vastavad: Microsofti programmi "Partners in Learning" nõunik Brasiiliast Eduardo Chaves, Hollandi keskhariduse spetsailist Ria Sluiter ja Mexico Interaktiivse Lastemuuseumi juhataja Rafael Enriques 21. sajandi koolist oma maa hariduskorralduste põhjal

  16. Tectonic uplift, threshold hillslopes, and denudation rates in a developing mountain range

    Science.gov (United States)

    Binnie, S.A.; Phillips, W.M.; Summerfield, M.A.; Fifield, L.K.

    2007-01-01

    Studies across a broad range of drainage basins have established a positive correlation between mean slope gradient and denudation rates. It has been suggested, however, that this relationship breaks down for catchments where slopes are at their threshold angle of stability because, in such cases, denudation is controlled by the rate of tectonic uplift through the rate of channel incision and frequency of slope failure. This mechanism is evaluated for the San Bernardino Mountains, California, a nascent range that incorporates both threshold hill-slopes and remnants of pre-uplift topography. Concentrations of in situ-produced cosmogenic 10Be in alluvial sediments are used to quantify catchment-wide denudation rates and show a broadly linear relationship with mean slope gradient up to ???30??: above this value denudation rates vary substantially for similar mean slope gradients. We propose that this decoupling in the slope gradient-denudation rate relationship marks the emergence of threshold topography and coincides with the transition from transport-limited to detachment-limited denudation. The survival in the San Bernardino Mountains of surfaces formed prior to uplift provides information on the topographic evolution of the range, in particular the transition from slope-gradient-dependent rates of denudation to a regime where denudation rates are controlled by rates of tectonic uplift. This type of transition may represent a general model for the denudational response to orogenic uplift and topographic evolution during the early stages of mountain building. ?? 2007 The Geological Society of America.

  17. 75 FR 35504 - San Rafael Cattle Company; Habitat Conservation Plan; Santa Cruz County, AZ

    Science.gov (United States)

    2010-06-22

    ...); northern Mexican garter snake (Thamnophis eques megalops) and Huachuca springsnail (Pyrgulopsis thompsoni.... Tuggle, Regional Director, Region 2, Albuquerque, New Mexico. BILLING CODE 4310-55-P ...

  18. Diseño de la estructura de pavimento para la "recta san Rafael" (Tibasosa

    Directory of Open Access Journals (Sweden)

    Heyler Yezid Pinto Rosas

    2009-06-01

    Full Text Available  Se exponen las actividades consideradas para eldiseño de la rehabilitación del pavimento en un sectorde la vía Duitama-Tibasosa (Boyacá. Con base enlos datos de la serie histórica de tránsito se obtuvo elnúmero de cargas estándar que circularon y circularándurante el periodo de diseño; posteriormente sepresenta la auscultación de la vía para evidenciar lacondición del pavimento con la determinación delíndice de deterioro, capacidad de respuesta ante lascargas y determinación de los parámetros deresistencia a través de ensayos de los materiales dela estructura o formulaciones reconocidas; finalmentese presentan diferentes alternativas de solución, queincluyen el reciclado y la reconstrucción enprofundidad.

  19. My Visit to Laguna San Rafael in Chile%智利水上逍遥游

    Institute of Scientific and Technical Information of China (English)

    孙国维

    2010-01-01

    @@ 来到智利之后,为了能尽快地认识这个世界最狭长的国家,我乘过飞机、汽车和火车,唯一的愿望是想从水路作一次漫游.谁知心想事成,旅游部门居然找上门来邀请我到新下水的"天蝎2号"豪华旅游船做客,并作一次免费的处女航行.

  20. Rafael Gutiérrez Girardot y sus afinidades electivas

    Directory of Open Access Journals (Sweden)

    Rodrigo Zuleta

    1995-09-01

    Full Text Available Hace unos cuarenta años, apareció en la editorial española Tauros un breve libro del entonces joven ensayista colombiano Rafael Gutiérrez Girardot titulado En torno a la literatura alemana actual. Para sorpresa de algunos lectores, en el libro de Gutiérrez no se hablaba de nombres previsibles como Kafka, Thomas Mann o Rainer Maria Rilke, que ya entonces tenían un público entre los lectores de lengua española, sino que se dedicaba a autores más o menos secretos en el mundo hispánico, en ese entonces, como Ernst Jünger, Karl Kraus y Gottfried Benn o, aún hoy, casi completamente secretos, como Eugen Gottlob Winkler y Max Komerell. Esa preferencia del joven ensayista por autores secretos anticipaba lo que sería después una de las características fundamentales de su trabajo: el rechazo a las modas y la voluntad de abrir siempre nuevos horizontes con su trabajo.

  1. Accidental inflation from Kaehler uplifting

    Energy Technology Data Exchange (ETDEWEB)

    Ben-Dayan, Ido; Westphal, Alexander; Wieck, Clemens [Deutsches Elektronen-Synchrotron DESY, Hamburg (Germany). Theory Group; Jing, Shenglin [Toronto Univ., ON (Canada). Canadian Inst. for Theoretical Astrophysics; Toronto Univ., ON (Canada). Dept. of Astronomy and Astrophysics

    2013-09-15

    We analyze the possibility of realizing inflation with a subsequent dS vacuum in the Kaehler uplifting scenario. The inclusion of several quantum corrections to the 4d effective action evades previous no-go theorems and allows for construction of simple and successful models of string inflation. The predictions of several benchmark models are in accord with current observations, i.e., a red spectral index, negligible non-gaussianity, and spectral distortions similar to the simplest models of inflation. A particularly interesting subclass of models are ''left-rolling'' ones, where the overall volume of the compactified dimensions shrinks during inflation. We call this phenomenon ''inflation by deflation'' (IBD), where deflation refers to the internal manifold. This subclass has the appealing features of being insensitive to initial conditions, avoiding the overshooting problem, and allowing for observable running {alpha}<{proportional_to}0.012 and enhanced tensor-to-scalar ratio r{proportional_to}10{sup -5}. The latter results differ significantly from many string inflation models.

  2. Arquitecturas y paisajes ausentes. Reconstrucción gráfica: Rafael Moneo

    OpenAIRE

    ZANFIR, BOGDAN IONUT

    2016-01-01

    Como el propio título explica, el trabajo trata de investigar, analizar y sobre todo aplicar distintas técnicas y herramientas gráficas en la reconstrucción de arquitecturas y paisajes ausentes de Rafael Moneo. La investigación gira en torno al sintagma arquitectura ausente, la clave principal para la elaboración del presente labor. Como la obra no construida de Rafael Moneo esta explicada con escasa información o simplemente mencionada, el concepto ausente incrementa la dif...

  3. Deep bore hole instrumentation along San Francisco Bay Bridges

    Energy Technology Data Exchange (ETDEWEB)

    Bakun, W.; Bowman, J.; Clymer, R.; Foxall, W.; Hipley, P.; Hollfelder, J.; Hutchings, L.; Jarpe, S.; Kasameyer, P.; McEvilly, T.; Mualchin, L.; Palmer, M.

    1998-10-01

    The Bay Bridges down hole network consists of sensors in bore holes that are drilled 100 ft. into bedrock around and in the San Francisco Bay. Between 2 and 8 instruments have been spaced along the Dumbarton, San Mateo, Bay, and San Rafael bridges. The instruments will provide multiple use data that is important to geotechnical, structural engineering, and seismological studies. The holes are between 100 and 1000 ft deep and were drilled by Caltrans. There are twenty- one sensor packages at fifteen sites. Extensive financial support is being contributed by Caltrans, UCB, LBL, LLNL-LDRD, U.C. Campus/Laboratory Collaboration (CLC) program, and USGS. The down hole instrument package contains a three component HS-1 seismometer and three orthogonal Wilcox 73 1 accelerometers, and is capable of recording a micro g from local M = 1.0 earthquakes to 0.5 g strong ground motion form large Bay Area earthquakes.

  4. Deep Borehole Instrumentation Along San Francisco Bay Bridges - 2001

    Energy Technology Data Exchange (ETDEWEB)

    Hutchings, L.; Kasameyer, P.; Long, L.; McEvilly, T.; Clymer, R.; Urhhammer, R.; Baise, L.

    2001-05-01

    This is a progress report on the Bay Bridges downhole network. Between 2 and 8 instruments have been spaced along the Dumbarton, San Mateo, Bay, and San Rafael bridges in San Francisco Bay, California. The instruments will provide multiple use data that is important to geotechnical, structural engineering, and seismological studies. The holes are between 100 and 1000 ft deep and were drilled by Caltrans. There are twenty-one sensor packages at fifteen sites. The downhole instrument package contains a three component HS-1 seismometer and three orthogonal Wilcox 731 accelerometers, and is capable of recording a micro g from local M = 1.0 earthquakes to 0.5 g strong ground motion form large Bay Area earthquakes. This report list earthquakes and stations where recordings were obtained during the period February 29, 2000 to November 11, 2000. Also, preliminary results on noise analysis for up and down hole recordings at Yerba Buena Island is presented.

  5. Gulf Coast Basins and Uplifts [gcstructsg

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — These data provide generalized outlines of major basins and uplifts in the Gulf Coast region modified after Plate 2, Principal structural features, Gulf of Mexico...

  6. 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

  7. Hell on Rails. The Continuing Violence in La Mara by Rafael Ramirez Heredia

    Directory of Open Access Journals (Sweden)

    José Manuel Camacho Delgado

    2016-12-01

    Full Text Available La Mara (2004 is one of the greatest Latin American novels about the violence plaguing the border between Mexico and Guatemala, where the maras (gangs, drug traffickers and all kinds of mafia organizations operate. Rafael Ramirez Heredia recreates the pitiful pilgrimage of thousands of undocumented immigrants who try to cross Mexico on a train known as the Beast.

  8. 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...

  9. Displacement and deformation analysis for uplift piles

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    On the assumptions that the shear resistance increases linearly with increasing shear displacement between the uplift pile and surrounding soil,that the axis force is distributed as parabola along the pile length,that elastic distortion occurs when the pile is loaded,that the displacement of pile is in accord with that of the soil,and that the uplift pile failure is regarded as the soil failure,arational calculation method was proposed for calculating the deformation,ultimate displacement and shear resistance of piles.The distributions of frictional resistance and the shear displacement along the pile length were obtained with the method.The comparisons were made between the measurement results and the present results.The present theoretical results agree well with the measurement results,with the average difference being less than 12% before failure.The comparisons show that the proposed method is reasonable for uplift design and engineering construction of piles.

  10. F-Theory Uplifts and GUTs

    Energy Technology Data Exchange (ETDEWEB)

    Blumenhagen, Ralph; /Munich, Max Planck Inst.; Grimm, Thomas W.; /Bonn U.; Jurke, Benjamin; /Munich, Max Planck Inst.; Weigand, Timo; /SLAC

    2010-08-26

    We study the F-theory uplift of Type IIB orientifold models on compact Calabi-Yau threefolds containing divisors which are del Pezzo surfaces. We consider two examples defined via del Pezzo transitions of the quintic. The first model has an orientifold projection leading to two disjoint O7-planes and the second involution acts via an exchange of two del Pezzo surfaces. The two uplifted fourfolds are generically singular with minimal gauge enhancements over a divisor and, respectively, a curve in the non-Fano base. We study possible further degenerations of the elliptic fiber leading to F-theory GUT models based on subgroups of E{sub 8}.

  11. Uplifting non-compact gauged supergravities

    Energy Technology Data Exchange (ETDEWEB)

    Baron, Walter H.; Dall’Agata, Gianguido [Dipartimento di Fisica e Astronomia “Galileo Galilei”,Università di Padova, Via Marzolo 8, 35131 Padova (Italy); INFN - Sezione di Padova Via Marzolo 8, 35131 Padova (Italy)

    2015-02-02

    We provide the M-theory uplift of de Sitter vacua of SO(5,3) and SO(4,4) gaugings of maximal supergravity in 4 dimensions. We find new non-compact backgrounds that are squashed hyperboloids with non-trivial flux for the 3-form potential. The uplift requires a new non-linear ansatz for the 11-dimensional metric and for the 3-form potential that reduces to the known one leading to the 7-sphere solution in the case of the SO(8) gauging.

  12. Connecting Realities: Rafael Lozano-Hemmer’s Pulse-based Works

    Directory of Open Access Journals (Sweden)

    Claudia Arozqueta

    2014-12-01

    Full Text Available Rafael Lozano-Hemmer is a Mexican digital artist recognized for creating large-scale theatrical interactive installations for museum and public spaces, as well as small-scale works with custom-made interfaces and digital technologies. Since 2006 this artist has created eight works that require the physiological input (pulse and heartbeats of the audience in order to be completed. Light in the pulse-based works of Rafael Lozano-Hemmer is the main vehicle that serves to visualize heartbeats outside the realm of the body, facilitating its reterritorialization and conceptualization as a malleable material that can cross the boundaries of the skin, expanding it to other three-dimensional extents in which new spatiotemporal relationships and interactions between participants and the surroundings are produced. This paper explores how these rhizomatic digital installations create a community conscience and engagement between different people in various spaces dedicated to art, while challenging our conception of reality.

  13. La lectura filosófica de la literatura en Rafael Gutiérrez Girardot

    Directory of Open Access Journals (Sweden)

    Leonardo Monroy Zuluaga

    2017-01-01

    Full Text Available Este artículo aborda algunas características de la lectura filosófica de la obra literaria en Rafael Gutiérrez Girardot. Entre ellas se encuentran: la necesidad de superar el acercamiento formal al texto; el reconocimiento de una tradición retomada de Friedrich Schlegel y Friedrich Nietzsche; la importancia de partir del texto escrito y de pensar, igualmente, las funciones del lector, y las derivaciones de la lectura filosófica en el marco del fin de la filosofía. Como colofón, se realiza un acercamiento a los posibles inconvenientes y fortalezas de la recepción contemporánea de la lectura filosófica de Rafael Gutiérrez Girardot.

  14. Puntos sobre las íes en la literatura colombiana: XX Rafael Pombo

    Directory of Open Access Journals (Sweden)

    Luis Vidales

    1965-12-01

    Full Text Available No tiene nada de raro que a estas alturas no exista acuerdo sobre el valor del poeta bogotano Rafael Pombo. Entra en ello no solo la ausencia de crítica capaz de encuadrar su obra, con profundidad verdadera, y separar de ella el orujo y la uva, sino también el relativo olvido en que suelen caer en el país las figuras del pasado.

  15. 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.

  16. 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...

  17. Differential uplift between Beihuaiyang and Dabie orogenic belt

    Institute of Scientific and Technical Information of China (English)

    杨坤光; 马昌前; 许长海; 杨巍然

    2000-01-01

    Isotope dating, hornblende geobarometer, fission-track analysis and fluid inclusion homogeneous temperature analysis have been applied to Caledonian, Variscan and Yenshan plutons in Bei Huaiyang (BHY) and Dabie erogenic belt (DOB), and the emplaced depths and ages of these plutons have been obtained in order to obtain differential uplift time and uplift heights between BHY and DOB since late Paleozoic era. BHY had experienced three stages of uplift (C1-C2, T-J2, J3-K1) and its total uplift height is about 10 km, but, DOB had only experienced two stages of uplift (T-J2, J3-K1) and its maximum uplift height is more than 15 km. BHY uplift occurred mainly before the mid-Jurassic (about 150 Ma), but DOB uplift took place after the mid-Jurassic (about 150 Ma).

  18. Differential uplift between Beihuaiyang and Dabie orogenic belt

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    Isotope dating,hornblende geobarometer,fission-track analysis and fluid inclusion homogeneous temperature analysis have been applied to Caledonian,Variscan and Yenshan plutons in Bei Huaiyang (BHY) and Dabie orogenic belt (DOB),and the emplaced depths and ages of these plutons have been obtained in order to obtain differential uplift time and uplift heights between BHY and DOB since late Paleozoic era.BHY had experienced three stages of uplift (C1-C2,T-J2,J3-K1) and its total uplift height is about 10 km,but,DOB had only experienced two stages of uplift (T-J2,J3-K1) and its maximum uplift height is more than 15 km.BHY uplift occurred mainly before the mid-Jurassic (about 150 Ma),but DOB uplift took place after the mid-Jurassic (about 150 Ma).

  19. F-term uplifted racetrack inflation

    CERN Document Server

    Badziak, Marcin

    2010-01-01

    It is shown that two classes of racetrack inflation models, saddle point and inflection point ones, can be constructed in a fully supersymmetric framework with the matter field F-term as a source of supersymmetry (SUSY) breaking and uplifting. Two models of F-term SUSY breaking are considered: the Polonyi model and the quantum corrected O'Raifeartaigh model. In the former case, both classes of racetrack inflation models differ significantly from the corresponding models with non-SUSY uplifting. The main difference is a quite strong dominance of the inflaton by the matter field. In addition, fine-tuning of the parameters is relaxed as compared to the original racetrack models. In the case of the racetrack inflation models coupled to the O'Raifeartaigh model, the matter field is approximately decoupled from the inflationary dynamics.

  20. D-term Uplifted Racetrack Inflation.

    OpenAIRE

    Brax, P.; Davis, A. C.; Davis, S.C.; Jeannerot, R.; Postma, M.

    2007-01-01

    It is shown that racetrack inflation can be implemented in a moduli stabilisation scenario with a supersymmetric uplifting D-term. The resulting model is completely described by an effective supergravity theory, in contrast to the original racetrack models. We study the inflationary dynamics and show that the gaugino condensates vary during inflation. The resulting spectral index is n_s = 0.95 as in the original racetrack inflation model. Hence extra fields do not appear to alter the predicti...

  1. 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

  2. Para una aproximación a la (revolución del discurso político latinoamericano desde Fidel Castro hasta Rafael Correa

    Directory of Open Access Journals (Sweden)

    Irina Bajini

    2010-03-01

    Full Text Available

    This article tries to place and characterize the latinoamerican political discourse. The analyses of some cases (Fidel Castro, Hugo Chávez, Fernando Lugo, Rafael Correa, Evo Morales and Luiz Inácio Lula da Silva contain verbal and gestual elements, and the persuasive consequences of political discourse.

  3. El desbarrancadero del genio. Fracaso y supervivencia en Memorias prematuras de Rafael Gumucio / The Precipice of a Genius. Failure and Survival in Memorias prematuras by Rafael Gumucio

    Directory of Open Access Journals (Sweden)

    Julia Musitano

    2016-08-01

    Full Text Available En una escritura que conjuga la vida con la ficción, a Rafael Gumucio la genialidad le permite convivir con la muerte y con la idea de que la vida se figura inevitablemente como un proceso de demolición. Gumucio escribe sus memorias prematuras sin la madurez para perdonar, sólo lo guía la percepción del fracaso y de la falta. En el marco de las escrituras del yo (específicamente la autoficción y siguiendo la tensión entre memoria y recuerdo, el trabajo desarrolla la siguiente hipótesis: el desgarramiento temporal que produce el acto de recordar en la escritura de la propia vida, disloca al narrador en primera persona de Memorias prematuras y lo precipita hacia el fracaso. En ese proceso el narrador se figura como fracasado en tanto víctima del paso del tiempo, como un sobreviviente al desbarrancadero de la propia vida. / Geniality, in a self writing that combines life and fiction, allows Rafael Gumucio lives with death and with the idea that all life figures itself as a demolition process. Gumucio writes his premature memories without the maturity to forgive, he is guided by the perception of failure. In self writings (specificly autofiction and in the tension between memory and souvenir, this work develops this hypothesis: the act of remembering produces a time ripping in the writing of his own life, dislocates the narrator of Memorias prematuras and guides him towards failure. In this process, the narrator figures himself as a “loser”, as a victim of the passing time, as a survivor of the desbarrancadero of his own life.

  4. D-term Uplifted Racetrack Inflation

    CERN Document Server

    Brax, Philippe; Davis, Stephen C; Jeannerot, Rachel; Postma, Marieke

    2007-01-01

    It is shown that racetrack inflation can be implemented in a moduli stabilisation scenario with a supersymmetric uplifting D-term. The resulting model is completely described by an effective supergravity theory, in contrast to the original racetrack models. We study the inflationary dynamics and show that the gaugino condensates vary during inflation. The resulting spectral index is n_s = 0.95 as in the original racetrack inflation model. Hence extra fields do not appear to alter the predictions of the model. An equivalent, simplified model with just a single field is presented.

  5. De Sitter Uplift with Dynamical Susy Breaking

    CERN Document Server

    Retolaza, Ander

    2015-01-01

    We propose the use of D-brane realizations of Dynamical Supersymmetry Breaking (DSB) gauge sectors as sources of uplift in compactifications with moduli stabilization onto de Sitter vacua. This construction is fairly different from the introduction of anti D-branes, yet allows for tunably small contributions to the vacuum energy via their embedding into warped throats. The idea is explicitly exemplified by the embedding of the 1-family $SU(5)$ DSB model in a local warped throat with fluxes, which we discuss in detail in terms of orientifolds of dimer diagrams.

  6. De Sitter uplift with Dynamical Susy Breaking

    Science.gov (United States)

    Retolaza, Ander; Uranga, Angel

    2016-04-01

    We propose the use of D-brane realizations of Dynamical Supersymmetry Breaking (DSB) gauge sectors as sources of uplift in compactifications with moduli stabilization onto de Sitter vacua. This construction is fairly different from the introduction of anti D-branes, yet allows for tunably small contributions to the vacuum energy via their embedding into warped throats. The idea is explicitly exemplified by the embedding of the 1-family SU(5) DSB model in a local warped throat with fluxes, which we discuss in detail in terms of orientifolds of dimer diagrams.

  7. Rafael María de Labra ante la cuestión de Cuba, 1898

    Directory of Open Access Journals (Sweden)

    Domingo Acebrón, M. Dolores

    1998-06-01

    Full Text Available Not available.

    Rafael María de Labra fue uno de los intelectuales del siglo XIX más sensibilizados por el problema colonial y principalmente por la cuestión de Cuba. La lucha infatigable de Labra por conseguir reformas políticas para las dos últimas colonias, Cuba y Puerto Rico, su defensa del sistema político autonomista y el respeto y tolerancia hacia los revolucionarios cubanos le valdría incluso, después de la independencia de Cuba en 1898, el reconocimiento moral de la nueva nación.

  8. Dibujo y pensamiento en la obra de Rafael Masó

    OpenAIRE

    Marañón González, Rafael Carlos

    2002-01-01

    Rafael Masó, arquitecto noucentista, es además, el artista adecuado para el análisis de una obra totalmente gráfica.Dibujos, escritos, gráficos y bocetos, son los elementos idóneos para que las ideas sobre la expresión gráfica, queden reflejados en esta Tesis Doctoral.Para conocer su obra gráfica, es necesario llegar a lo más profundo de sus pensamientos transmitidos por historiadores y la Familia Masó. Tanto su obra arquitectónica, como sus dibujos, son conocidos por expertos y estudiosos ...

  9. Rafael Núñez, poeta o del existencialismo agustiniano a la beatitud de Cristo

    Directory of Open Access Journals (Sweden)

    Lucio Pabón Núñez

    1966-12-01

    Full Text Available Primera parte. Circunstancia y caracteres El 28 de septiembre de 1825 nació en Cartagena Rafael Núñez. Su padre y su abuelo materno fueron militares. Se graduó en derecho en su ciudad natal. Desde muy temprano ejerció el periodismo, profesión a la que estuvo vinculado hasta el final de sus días; lo mismo puede anotarse de sus dones poéticos. A los 24 años fue Secretario de Gobierno en Cartagena.

  10. Information ethics and Internet research ethics: An interview with Rafael Capurro

    Directory of Open Access Journals (Sweden)

    Rahman Marefat

    2014-12-01

    Full Text Available The emergence of the Internet and new technologies along with their challenges, have caused more attention to new and special aspects of ethics. This is an interview with Rafael Capurro on information ethics and Internet research ethics. This interview is given on the occasion of an invitation from Prof. Jafar Mehrad to visit the Islamic World Science Citation Center (ISC and the Regional Information Center for Science and Technology (RICEST in Shiraz (Iran from September 30 to October 5, 2014, and to give a number of lectures on the information concept and on information ethics.

  11. Entrevista a Rafael Martínez Raymonda, sobre la figura de Lisandro de la Torre

    OpenAIRE

    Martínez Raymonda, Rafael; Toschi, Damián

    2010-01-01

    Rafael Martínez Raymonda, secretario general del partido Demócrata Progresista, es entrevistado por Damián Toschi para el programa "Derecho de autor" con motivo de los 142 años del nacimiento de Lisandro de la Torre, fundador del partido y político fundamental del siglo XX. Lisandro de la Torre: Nació el 6 de diciembre de 1868 en Santa Fe y se suicidó el 5 de enero de 1939 en Buenos Aires.

  12. La lectura filosófica de la literatura en Rafael Gutiérrez Girardot

    OpenAIRE

    Leonardo Monroy Zuluaga

    2017-01-01

    Este artículo aborda algunas características de la lectura filosófica de la obra literaria en Rafael Gutiérrez Girardot. Entre ellas se encuentran: la necesidad de superar el acercamiento formal al texto; el reconocimiento de una tradición retomada de Friedrich Schlegel y Friedrich Nietzsche; la importancia de partir del texto escrito y de pensar, igualmente, las funciones del lector, y las derivaciones de la lectura filosófica en el marco del fin de la filosofía. Como colofón, se realiza un ...

  13. Deep Borehole Instrumentation Along San Francisco Bay Bridges - 2000

    Energy Technology Data Exchange (ETDEWEB)

    Hutchings, L.; Kasameyer, P.; Turpin, C.; Long, L.; Hollfelder, J.; McEvilly, T.; Clymer, R.; Uhrhammer, R.

    2000-03-01

    This is a progress report on the Bay Bridges downhole network. Between 2 and 8 instruments have been spaced along the Dumbarton, San Mateo, Bay, and San Rafael bridges in San Francisco Bay, California. The instruments will provide multiple use data that is important to geotechnical, structural engineering, and seismological studies. The holes are between 100 and 1000 ft deep and were drilled by Caltrans. There are twenty-one sensor packages at fifteen sites. The downhole instrument package contains a three component HS-1 seismometer and three orthogonal Wilcox 731 accelerometers, and is capable of recording a micro g from local M = 1.0 earthquakes to 0.5 g strong ground motion form large Bay Area earthquakes. Preliminary results on phasing across the Bay Bridge, up and down hole wave amplification at Yerba Buena Island, and sensor orientation analysis are presented. Events recorded and located during 1999 are presented. Also, a senior thesis on the deep structure of the San Francisco Bay beneath the Bay Bridge is presented as an addendum.

  14. El Quinquenio de Rafael Reyes y la transformación del mapa político-administrativo colombiano

    Directory of Open Access Journals (Sweden)

    Carlos Andrés Quinche Castaño

    2011-05-01

    Full Text Available Normal 0 21 false false false ES-CO X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Tras la expedición de la Constitución de 1886, la división políticoadministrativa del territorio colombiano permaneció invariable durante 18 años, hasta la creación del Departamento de Nariño, de acuerdo con los parámetros establecidos en la ley. Sin embargo, durante el primer año del gobierno de Rafael Reyes en 1905, fueron instituidos seis nuevos departamentos, para luego, ya en 1908, subdividir el territorio nacional en 34 secciones. El movimiento contrarreformista que siguió a la administración de Reyes en 1909 restableció la división territorial existente antes del Quinquenio, pero ciertas resistencias locales permitieron que algunos de los nuevos departamentos creados recientemente lograran subsistir. El presente artículo constituye una revisión histórica de las transformaciones que sufrió el ordenamiento territorial colombiano durante el gobierno de Reyes, todo con el fin de dar cuenta del papel que cumple el Quinquenio en la definición del mapa político administrativo del país.

  15. Rincón del Atuel-1 (San Rafael, Mendoza: evidencias arqueológicas e implicancias regionales Rincon Del Atuel-1 (San Rafael, Mendoza: Archaeological Evidence And Regional Implications

    Directory of Open Access Journals (Sweden)

    Adolfo Gil

    2008-12-01

    Full Text Available El sitio Rincón del Atuel 1 (RA-1 fue uno de los primeros estudiado sistemáticamente en los inicios de la arqueología del sur de Mendoza y del que se conocía solo información proveniente de la superficie. Sobre la base de excavaciones recientes se detallan las evidencias arqueológicas del sitio. Asimismo se incorporan datos disponibles de colecciones previas. Sus ocupaciones se registran en los últimos 1500-1700 años AP y mostrarían dos momentos distintos; el más tardío desde hace unos 1000-1200 años AP y el otro desde esa fecha a unos 1500-1700 años AP. El conjunto más tardío se asocia a un suelo y mostraría características de "sitio somero" mientras que el conjunto inferior se relacionaría depositacionalmente con la planicie de inundación del río Atuel por lo que presentaría mejor resolución temporal. El registro arqueobotánico y los valores isotópicos en muestras humanas avalan una dieta mixta de maíz con otras plantas silvestres al menos para el conjunto más antiguo. La evidencia no es concordante con lo esperable para un patrón semi-sedentario o sedentario propuesto previamente para entender las ocupaciones agrícolas del área. Este registro es significativo para comprender la estructura arqueológica en valles fluviales de zonas áridas, y discutir temas como la intensificación regional y el significado de los cultígenos.Rincón del Atuel-1 is an open air archaeological site located in the current alluvial valley of the Atuel River, Mendoza Province (Argentina. The site was studied during the first stage of archaeological research in southern Mendoza. However, only the surface archaeological record was studied and no information was published about the material in stratigraphic context. Recently, excavations were carried out in order to explore issues related to the Late Holocene human occupation. The results presented here show that the site was occupied from 1500-1700 14C years BP until recently (at least ca. 300 years BP. Two archaeological assemblages can be distinguished at the site. The older one, between 1500-1700 and 1000-1200 years BP, includes greater temporal resolution and light human occupation. The human remains recovered from the site were associated with this assemblage; isotopic analysis showed a mixed diet that included a significant C4 and C3 component. The only corn remains recovered are associated with this occupation, probably with the structure "Oven 1". In contrast, the late archaeological assemblages, between 1000-1200 years BP, revealed a denser archaeological record stratigraphically associated with contemporary soils and with a decreased temporal resolution. There are other archaeological differences between these assemblages, including differences in lithic raw material and ceramic type. The Rincon del Atuel 1 archaeological record is not concordant with a semi-sedentary pattern as was previously proposed, and shows a temporal variation that could be related to regional changes, namely the intensification process previously formulated for the neighboring high mountain region.

  16. Morphometric assessment of uplifting coral reef sequences, Sumba Island, Indonesia

    Science.gov (United States)

    Nexer, Maëlle; Authemayou, Christine; Schildgen, Taylor; Hantoro, Wayhoe; Molliex, Stephane; Delcaillau, Bernard; Pedoja, Kevin; Husson, Laurent; Regard, Vincent

    2015-04-01

    Rates and patterns of vertical ground motions constitute a basic framework for understanding the kinematics of the deforming lithosphere. Calibrating morphometric indices with landscape maturity and tectonic deformation requires comparisons with regions of known uplift history. The ability to derive uplift histories from marine or reefal terrace analysis in coastal zones therefore makes such settings ideal for testing morpho-tectonic analysis techniques. To explore the relationships between uplift rates and landscape morphology, we studied a 300-km-long coastal stretch affected by slow to moderate uplift rates, varying laterally from ≈0.02 to ≈0.6 mm/yr. We exploited the systematic spatial variation in rock uplift rates recorded in well-dated sequences of coral reef terraces of Sumba Island to assess the manner and degree to which the eight morphometric indices selected for this study can be correlated with tectonic forcing. The uniform equatorial climate and lithology (most of the bedrock is composed of Quaternary reefal limestones) across the study area allow us to evaluate which morphometric indices best reflect the spatial variations in Pleistocene coastal uplift rates. Morphometric indices extracted from digital elevation models include residual relief, incision, stream length index, ksn, hypsometric integral, drainage area, mean relief, and shape factor. We calculated and extracted these indices at three scales: across the whole island, from grouped sequences of coral reef terraces undergoing comparable uplift rates and individual catchments draining mainly the coral reef zones located in the northern part of Sumba Island. We find that SL, hypsometric integral, mean relief and shape factor of catchments positively correlate with uplift rates, whereas incision, residual relief, and ksn do not. Interestingly enough, we find that only the areas that are uplifting at a rate faster than 0.3 mm/yr can yield the extreme values for these indices, implying in turn

  17. Chlamydia trachomatis, Gardnerella vaginalis y otros microorganismos en gestantes del Hospital de Maternidad Rafael Calvo

    Directory of Open Access Journals (Sweden)

    Delfina Urbina

    1995-03-01

    Full Text Available Con el fin de conocer el índice de infección por Chlamydia rachomatis, Gardnerella vaginalis y otros gérmenes sexualmente transmisibles en un grupo de gestantes. Se estudiaron 135 mujeres del primer, segundo y tercer trimestre de gestación atendidas en el Hospital de Maternidad Rafael Calvo. Mediante estudios combinados de laboratorio, que incluyeron exámenes directos, cultivos bacteriológicos y técnicas de inmunoensayo, se identificaron los microorganismos infectantes en flujo vaginal, secreción endocervical suero de 83% de los pacientes. Se encontró que el 15,5%, 9,6%, 8,5%, 40%, 8,8% y 0,7% de las gestantes tuvieron infección genital por C. trachomatis, G. vaginalis, T. vaginalis, Candida sp., Streptococcus By N. gonorrhoeae, respectivamente; ninguna paciente fue reactiva para marcador de infección activa por citomegalovirus. La cervicitis y el aborto, como antecedentes, fueron las patologías asociadas más frecuentemente halladas; la ruptura temprana de membranas, tambi6n se presentó en algunas de las pacientes. La significativa proporción de gestantes con infección por bacterias que causan complicaciones en el embarazo, amerita su estudio en el diagnóstico de rutina de la consulta prenatal del Hospital de Maternidad Rafael Calvo.

  18. La Restauración Conservadora: Rafael Carrera y el destino del Estado nacional en Guatemala

    Directory of Open Access Journals (Sweden)

    Edelberto Torres-Rivas

    2010-10-01

    Full Text Available El artículo, partiendo de una revisión crítica de la historiografía liberal, analiza el periodo de la historia guatemalteca conocido como la “Restauración Conservadora” (1840-1870, el papel desempeñado en este proceso por el general Rafael Carrera y sus implicaciones en la constitución del Estado nacional. En primer lugar se hace un repaso de los alcances de la noción de Estado nacional a la vez que se examinan los intentos por imponer proyectos de Estado-nación en Guatemala después de la independencia. A continuación, se estudia el fracaso de las reformas liberales, la aparición de condiciones sociales para el ascenso de los conservadores y el posicionamiento de Rafael Carrera como caudillo. Posteriormente, se presenta un análisis de la significación política de la restauración conservadora; y finalmente, se hace un balance en términos teóricos e históricos de los logros y fracasos en la implantación del Estado nacional en Guatemala en la segunda mitad del siglo xix.

  19. Hamilton AFB, San Rafael, California. Revised Uniform Summary of Surface Weather Observations (RUSSWO). Parts A through F

    Science.gov (United States)

    1972-11-03

    QIILLT1y M4,rrTCA7ITA1 -It G-YY1CA"T rrL- U? kiy iL~jD ItISTRIIIUTON STAMP LEGIBLY. 80 ~ 1104 DATE RECEIVED) IN l) TIC 1I11OTOGRMPII TIS SIfEF~r AND...wihTompotatute Dry sulb 79 93W~ 127T974., D0610 SO* A 9 F s2 RPM ~ ~ Z,7-- - - - - - -- - -w’ DATA PRUCESSING DIV;SIQN3 USO FTAC PSYCHROMETRIC SUMMARY "AIR WEATHER

  20. Una poética de la memoria: la poesía de Rafael Juárez

    NARCIS (Netherlands)

    Valdivia, P.

    2010-01-01

    In this essay, the intellectual and literary foundations of Rafael Juárez’s poetic discourse are studied in depth. Such assessment is specifically carried out taking as an example his poetry collection entitled Aulaga. From the theoretical framework provided by Paul Ricoeur in his works about the no

  1. Rafael Uribe Uribe y Aureliano Buendía en Cien años de soledad

    Directory of Open Access Journals (Sweden)

    Ivonne Suárez Pinzón

    2009-12-01

    Full Text Available En este artículo se van a exponer las coincidencias entre el personaje de la obra cumbre de Gabriel García Márquez y el presidente colombiano Rafael Uribe. Para ello se estudian tanto la figura literaria como la histórica y se analizan sus puntos en común y divergencias. En la obra de García Márquez, renace Rafael Uribe Uribe y se reconoce su vigencia histórica. El escritor nos reenseña su importancia, pero los desacraliza y los desciende del desafortunado pedestal de héroes nacionales, de ídolos de piedra, en el cual los había ubicado la historiografía tradicional.______________________ABSTRACT:This article presents the coincidences between the protagonist of the most outstanding work of Gabriel García Márquez and the president of Colombia Rafael Uribe. It analyses both the literary and the historical figure, considering their common features and differences between them. In the work of García Márquez, Rafael Uribe Uribe is reborn, and his historical validity is recognised. The writer reminds us of their importance but at the same time he demystifies them and takes them off the unlucky pedestal of national heroes, of idols made of stone, where they had been placed by traditional historiography.

  2. Una poética de la memoria: la poesía de Rafael Juárez

    NARCIS (Netherlands)

    Valdivia, P.

    2010-01-01

    In this essay, the intellectual and literary foundations of Rafael Juárez’s poetic discourse are studied in depth. Such assessment is specifically carried out taking as an example his poetry collection entitled Aulaga. From the theoretical framework provided by Paul Ricoeur in his works about the

  3. East Central Uplift Belt of Junggar Basin

    Institute of Scientific and Technical Information of China (English)

    1996-01-01

    @@ Mosuowandong ( Z3 ) and Dongdaohaizi (Z4) are two bidding blocks located in the east part of central uplift Belt, the hinterland of Junggar Basin. Xinjiang Uygur Autonomous Region. It totally covers an area of 8 100km2. Topographically, the two blocks are quite gentle with elevation of 380-400 m on average. The north part is desert and the south area is good for farming. There are three ephemeral streams flowing across the desert from south to north. The ground water is buried at the depth ranging from 6 to 8 m. It belongs to continental climate with the annually averaged precipitation of 80 mm. The traffic is rather convenient in the south part of both blocks. There are several sand-paved roads and two asphalt roads connected with the highway from Karamay to Urumqi City.

  4. Multi-stage uplift of the Rocky Mountains: new age constraints on the Telluride Conglomerate and regional compilation of apatite fission track ages

    Science.gov (United States)

    Donahue, M. S.; Karlstrom, K. E.; Gonzales, D. A.; Pecha, M.; McKeon, R. E.

    2011-12-01

    The Telluride Conglomerate, exposed on the western flanks of Oligocene caldera complexes of the San Juan Mountains of Colorado, has historically been considered an Eocene alluvial deposit overlying the "Rocky Mountain erosion surface" and pre-dating Oligocene volcanism. Measured sections show that the Telluride preserves an unroofing sequence with basal units dominated by Paleozoic sedimentary clasts transitioning into upper units dominated by locally derived Proterozoic basement mixed with previously unrecognized andesitic Oligocene volcanics. Paleoflow directions and thicknesses of the preserved unit indicate the Telluride Conglomerate was deposited by a large, high-energy WNW- flowing braided river system. Detrital zircon analysis indicates minimum ages for individual grains within the Telluride Conglomerate of 28.0 to 31.5 Ma. This, plus the entrained volcanic clasts, redefines the unit as being of Oligocene age and indicates that conglomeratic deposition overlapped with regional San Juan volcanism and just predated major caldera eruptions at 28.4 Ma (San Juan and Uncompahgre) and 27.6 Ma (Silverton). We interpret the deposition of the Telluride Conglomerate to be the depositional response to regional uplift and erosion related to early stages of San Juan magmatism. These units have undergone significant post-depositional tectonism: the Telluride Conglomerate is found at ~9,000ft elevation near Telluride, CO, but is at ~13,000' at its westernmost exposure at Mt. Wilson. We attribute this differential uplift to be associated with faulting, pluton emplacement, and additional mantle driven uplift associated with the emplacement and cooling of the Wilson Stock in the last 20-22 Ma as documented by Miocene cooling seen in apatite helium (AHe) ages. This cooling fits into our regional compilation of published apatite fission track (AFT) and AHe data showing temporally and spatially partitioned Cenozoic cooling indicative of multistage uplift of the Rocky Mountain

  5. Timing and driving mechanisms for multi-stage uplift of the Southern Rocky Mountains: Evidence from thermochronology and detrital zircon analysis

    Science.gov (United States)

    Donahue, M. S.; Ricketts, J. W.; Karlstrom, K. E.; Kelley, S.

    2014-12-01

    A compilation of apatite fission track (AFT) and (U-Th)/He (AHe) thermochronologic data from the southern Rocky Mountains reveals spatial and temporal patterns in Cenozoic cooling corresponding to discrete uplift pulses: 1) 70-45 Ma cooling ages are best preserved in hangingwall blocks of Laramide uplifts, especially in the northern Rockies with apparent exhumation rates (AER) of ~ 60 m/Ma based on age-elevation transects and modeled cooling paths; 2) Relative tectonic quiescence from 45-35 Ma coincided with the establishment of the Rocky Mountain erosion surface; 3) 35-25 Ma cooling ages variably overprint Laramide cooling histories south of central Colorado and much of the Great Plains topographic ramp; this episode had apparent exhumation rates of ~100 m/Ma and was driven by heating and mantle buoyancy during the ignimbrite flare-up concentrated beneath the San Juan and Mogollon Datil volcanic fields, with associated long wavelength uplift in central Colorado; 4) 20-10 Ma shorter wavelength uplifts in Rio Grande rift flanks at rates of ~ 150 m/Ma from Wyoming to Mexico in response to simultaneous opening of the Rio Grande rift; 5) Ongoing post-10 Ma uplift at rates > 120 m/Ma especially in areas of faulting and areas overlying marked mantle velocity transitions due to small scale upper mantle convection and response to land surface uplift, river integration, and isostatic rebound due to differential erosion. To investigate the sedimentary record of mid-Tertiary events, detrital zircon analysis of the Telluride Conglomerate and Blanco Basin Formation of the western and southeastern flanks of the San Juan volcanic field reveals youngest grain clusters of 28 Ma and 33 Ma, respectively. These units record unroofing, first of Paleozoic sedimentary units, then Proterozoic basement and Oligocene volcanics. AHe of these units constrains burial to less than 1-1.5 km. We interpret these units to record the uplift and erosion associated with the inflating San Juan volcanic

  6. Rafael Obregón Loría, el historiador del siglo XIX

    Directory of Open Access Journals (Sweden)

    Rafael A. Méndez Alfaro

    2015-01-01

    Full Text Available El trabajo que se presenta ofrece una visión general de la vida y obra del notable historiador y humanistacostarricense, Rafael Obregón Loría. Se subrayan asuntos relacionados con sus orígenes familiares,formación, intereses disciplinarios, obra producida y reconocimientos de los que fue objeto. Pretende ser unaaproximación inicial al hombre que se movió entre la historia del siglo XIX, los estudios de masonería y elanálisis de la Campaña Nacional contra los filibusteros (1856-1857, promoviendo el estudio del pasado comoun sustento básico de la identidad costarricense.

  7. Catálogo de la obra de Rafael Barco Molina

    Directory of Open Access Journals (Sweden)

    María Concepción Álvarez

    2013-01-01

    Full Text Available Con este artículo se prentende difundir el catálogo de la obra de Rafael Barco Molina (Fuente Victoria, 1903- Almería, 1995, compositor, profesor, director, y sobre todo la cuna musical almeriense de la postguerra, conocido en Almería como el maestro Barco, obras que pertenecen al patrimonio musical de Almería y que hasta el momento han permanecido refugiadas, en su mayor parte, en archivos privados (familia, amigos y discípulos y/o instituciones de ámbito privado (hermandades y SGAE y en muy pocos casos, en instituciones públicas como es el caso de la Biblioteca Nacional de España, en la que se encuentran seis de los títulos que forma la obra musical de este compositor y el archivo de la Banda Municipal de Almería.

  8. Pregnancy in Adolescents of the “Rafael Valdes” Policlinic during the Year 2009

    Directory of Open Access Journals (Sweden)

    Melissa Serra Ruíz

    2011-11-01

    Full Text Available Background: the situation of teen pregnancy is now a health problem worldwide, associated with increased maternal morbidity. Objective: to estimate the rate of teen pregnancy and related maternal morbidity characterized. Method: prospective descriptive study conducted in the Area of Health Polyclinic "Rafael Valdés Cotorro Municipality during the year 2009. The sample consisted of 79 pregnant teenagers, to which they were asked informed consent to participate in research. The variables studied were: conditions during pregnancy and related complications that were taken from obstetric card and processed using the SPSS statistical system-11, 5, using frequencies and percentages and descriptive statistical techniques. Results: the rate of teen pregnancy in 2009 was 226 x 1000 and shows an increasing trend. Vaginal infection (98, 7 %, anemia (58, 2 % and asymptomatic bacteriuria (38 % were the most common morbidities. Conclusion: pregnancy in adolescence is a health problem today is growing and continues to be necessary to examine.

  9. Noise is a Loaded Gun of Violence: Thunder and Agression in Santo remedio of Rafael Courtoisie

    Directory of Open Access Journals (Sweden)

    Borja Cano Vidal

    2016-07-01

    Full Text Available This paper aims to study the implications which shows the phenomenon of noise connected to the violent act in the novel Santo remedio (2006 of Rafael Courtoisie. From a literary perspective, one comes to diverse disciplines as the sociology or the art in search of the links that connect noise and violence in the contemporary society, specially in the postmodernism. Likewise, theoretical as Julia Kristeva or Michel Foucault complete a theoric map that claims of explaining the micropolitics carried out by the protagonist of the work, who ends up by infecting of abject bodies his building. The hypothesis of the paper resides in connecting the violent acts done by Paul Green, protagonist of the novel, with the constant submission of his body and mind to the noise, from every aspect.

  10. In Memorian Sr. Don Jesús Rafael de Vera Ferre

    Directory of Open Access Journals (Sweden)

    Emilia María Tonda Monllor

    1999-12-01

    Full Text Available El pasado dos de febrero de 1999 y en la plenitud de su vida, fallecía en Alicante,la ciudad que tanto quería, su ciudad, nuestro compañero y amigo Rafael. Sumuerte, por repentina e inesperada, nos ha dejado un triste y amargo pesar entrelas muchas personas que compartíamos con él trabajo y amistad. Su muerte seprodujo mientras impartía clases de doctorado, es decir, en acto de se~cioE. lhueco que se produce resulta imposible de llenar para todos sus compañeros que,día a día, sabían de su quehacer siempre briiiantemente conciliador, y para toda lacomunidad universitaria ya que contantemente tenía su mira puesta en beneficio dela Universidad que tan dignamente representaba como profesor y como Director.

  11. Sport celebrities multiple use in marketing messages: Example of the Spanish tennis player Rafael Nadal

    Directory of Open Access Journals (Sweden)

    Arta Antonovica

    2016-10-01

    Full Text Available The use of a sport celebrity as a message source is a popular way how to convince many consumers around the world to buy and use different services. In the last decades, we have seen that many sport celebrities in a serial way promote products and services of different companies at the same time or in a sequence. Therefore, there arises a question of message source credibility and trustfulness. The main objective of this research paper is to study the world famous Spanish tennis player’s appearance, Rafael Nadal, as a message source in different companies’ advertisements and the kind of image he creates. In this sense, a content analysis technique and a face‐to‐face survey technique (328 subjects have been conducted to know what the consumers’ attitudes towards serial sport endorsers are.

  12. La Transfiguración de Rafael : un mito plástico

    Directory of Open Access Journals (Sweden)

    Jesús Viñuales

    2000-01-01

    Full Text Available La carga mitológica de una obra de arte plástico (pintura especialmente se limita a la reproducción de un mito o leyenda mítica fijada anteriormente en lenguaje oral o como muciio escrito o literario. El artista reproduce el mito conocido según los cánones de la época y con el estilo personal que le caracterice, pero no «inventa», ni descubre ni «cuenta» un mito nuevo. Rafael en su obra «La transfiguración» creemos que es una excepción a esta regla presentándonos una mítica que no existía antes en las dos leyendas milagrosas bíblicas que narra el cuadro.The mythological charge in a work of plastic art, is límited to the reproduction of a myth or a mythical legend which has been previously fixed on oral language or bay far written or literary. The artist reproduces the known myth according  to the canon of the time and with the personal style which is characterísed by, but he doesn't invent, neither discovers  nor tells anew myth. In Rafael's work "The transfiguration»  we think that is an exception to this rule, it presents a myth which didn't exist before in the two Biblical miraculous legends that the painting tells.

  13. El vibracionismo de Rafael Barradas: genealogía de un concepto

    Directory of Open Access Journals (Sweden)

    Faxedas Brujats, Mª Lluïsa

    2015-09-01

    Full Text Available Vibrationism was an art movement developed by the painter Rafael Barradas (1890-1929 between 1917 and 1920, and this period remains one of the most recognized and recognizable of his artistic legacy. The aim of this paper is to look further into the concept of vibrationism in an attempt to reveal which elements of Barradas’ artistic vision he sought to highlight by choosing this particular word. The author begins by addressing the frequent use of the concept of vibration in European avant-garde circles and then focuses on its emergence in Barradas’ works from 1917 onwards. Finally, the meaning given to vibrationism in a text published by Torres- García is analyzed and his artistic interpretation of the style in his own paintings is discussed.El vibracionismo fue el movimiento pictórico practicado por el pintor Rafael Barradas (1890-1929 entre 1917 y 1920, y constituye una de las etapas artísticas más reconocidas y reconocibles de su trayectoría. El objetivo del artículo es el de profundizar en el concepto mismo de “vibracionismo”, para descubrir qué elementos de su propuesta plástica pretendía Barradas poner de relieve al escoger esta palabra en particular. Partiremos del frecuente uso del concepto de vibración en los medios de la vanguardia europea, para centrarnos después en su aparición en relación a la obra barradiana a partir de 1917; finalmente se analiza su significado a partir de un texto publicado por Torres-García, y se estudia su concreción plástica en la obra pictórica del autor.

  14. Accidental inflation from Kähler uplifting

    Energy Technology Data Exchange (ETDEWEB)

    Ben-Dayan, Ido; Westphal, Alexander; Wieck, Clemens [Deutsches Elektronen-Synchrotron DESY, Theory Group, Notkestrasse 85, D-22603 Hamburg (Germany); Jing, Shenglin, E-mail: ido.bendayan@desy.de, E-mail: shenglin.jing@utoronto.ca, E-mail: alexander.westphal@desy.de, E-mail: clemens.wieck@desy.de [Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St.George Street, Toronto, ON, M5S 3H8 (Canada)

    2014-03-01

    We analyze the possibility of realizing inflation with a subsequent dS vacuum in the Käahler uplifting scenario. The inclusion of several quantum corrections to the 4d effective action evades previous no-go theorems and allows for construction of simple and successful models of string inflation. The predictions of several benchmark models are in accord with current observations, i.e., a red spectral index, negligible non-gaussianity, and spectral distortions similar to the simplest models of inflation. A particularly interesting subclass of models are ''left-rolling'' ones, where the overall volume of the compactified dimensions shrinks during inflation. We call this phenomenon ''inflation by deflation'' (IBD), where deflation refers to the internal manifold. This subclass has the appealing features of being insensitive to initial conditions, avoiding the overshooting problem, and allowing for observable running α ∼ 0.012 and enhanced tensor-to-scalar ratio r ∼ 10{sup −5}. The latter results differ significantly from many string inflation models.

  15. Calidad del chile poblano, oportunidad de comercio para productores de San Matías Tlalancaleca y San Rafael Tlanalapa, Puebla.

    OpenAIRE

    Cruz Vargas, Alejandro

    2013-01-01

    En la Sierra Nevada del estado de Puebla, el cultivo de chile poblano (capsicum annuum) presenta un descenso en superficie sembrada, debido a precios bajos que resultan de la competencia con el chile proveniente de otros estados del país, y bajos rendimientos. El objetivo de este trabajo consistió en determinar si en la producción del picante la adopción de criterios de calidad alimentaria representa una oportunidad de mercado, y de aumento de ganancias, considerando a la industría restaurant...

  16. Uplift Pressure of Waves on A Horizontal Plate

    Institute of Scientific and Technical Information of China (English)

    周益人; 陈国平; 黄海龙; 王登婷

    2003-01-01

    Uplift pressures of waves acting on horizontal plates are the important basis for design of maritime hollow-trussed structures. In this paper, an experimental study on the uplift pressures of waves on a horizontal plate is conducted by use of a series of model tests. Detailed analysis has been given to the formation mechanism of uplift pressures of waves. It is considered that the impact pressure intensity is mainly affected by geometrical factors (tangential angle of waves), dynamic factors (wave height, wave velocity, etc.) and air cushion. Based on the test results, an equation for calculation of the maximum uplift pressure intensity of waves on a plate is presented. A large quantity of test data shows good agreement of the present equation with the test results.

  17. Zonation of uplifted pleistocene coral reefs on barbados, west indies.

    Science.gov (United States)

    Mesolella, K J

    1967-05-05

    The coral species composition of uplifted Pleistocene reefs on Barbados is very similar to Recent West Indian reefs. Acropora palmata, Acropora cervicornis, and Montastrea annularis are qtuantitatively the most important of the coral species.

  18. Estudio de caso: Habilidades sociales de dos niños con Síndrome de Asperger del Colegio María Inmaculada de San Carlos durante el periodo 2011 - 2012.

    OpenAIRE

    2013-01-01

    Vargas, G. Estudio de caso: Habilidades sociales de dos niños con Síndrome de Asperger del Colegio María Inmaculada de San Carlos durante el periodo 2011 - 2012. Bajo la dirección del Dr. Rafael Espinoza Pizarro Ph. D, Universidad Estatal a Distancia, Escuela de Estudios de Posgrado, noviembre 2012. Esta investigación tuvo como propósito analizar las habilidades sociales de dos niños con Síndrome de Asperger en los procesos pedagógicos en el Colegio María Inmaculada de San Car...

  19. Truncations driven by constraints: consistency and conditions for correct upliftings

    CERN Document Server

    Pons, J M; Pons, Josep M.; Talavera, Pere

    2004-01-01

    We discuss the mechanism of truncations driven by the imposition of constraints. We show how the consistency of such truncations is controlled, and give general theorems that establish conditions for the correct uplifting of solutions. We show in some particular examples how one can get correct upliftings from 7d supergravities to 10d type IIB supergravity, even in cases when the truncation is not initially consistent by its own.

  20. La identidad es una sinécdoque: en torno a Rusticatio mexicana de Rafael Landívar

    OpenAIRE

    Joaquín Rodríguez Beltrán

    2012-01-01

    El presente artículo plantea un modo de analizar la ideología de la identidad utilizando como concepto central la idea de sinécdoque, lo cual se lleva a cabo aplicándolo al caso específico de Rusticatio mexicana de Rafael Landívar. Se resalta la noción de identidad en el plano discursivo, y en tanto que tal, susceptible de analizarse en obras literarias.

  1. Control of paleoshorelines by trench forebulge uplift, Loyalty Islands

    Science.gov (United States)

    Dickinson, William R.

    2013-07-01

    Unlike most tropical Pacific islands, which lie along island arcs or hotspot chains, the Loyalty Islands between New Caledonia and Vanuatu owe their existence and morphology to the uplift of pre-existing atolls on the flexural forebulge of the New Hebrides Trench. The configuration and topography of each island is a function of distance from the crest of the uplifted forebulge. Both Maré and Lifou are fully emergent paleoatolls upon which ancient barrier reefs form highstanding annular ridges that enclose interior plateaus representing paleolagoon floors, whereas the partially emergent Ouvea paleoatoll rim flanks a drowned remnant lagoon. Emergent paleoshoreline features exposed by island uplift include paleoreef flats constructed as ancient fringing reefs built to past low tide levels and emergent tidal notches incised at past high tide levels. Present paleoshoreline elevations record uplift rates of the islands since last-interglacial and mid-Holocene highstands in global and regional sea levels, respectively, and paleoreef stratigraphy reflects net Quaternary island emergence. The empirical uplift rates vary in harmony with theoretical uplift rates inferred from the different positions of the islands in transit across the trench forebulge at the trench subduction rate. The Loyalty Islands provide a case study of island environments controlled primarily by neotectonics.

  2. El antimaritenismo de Rafael Calvo Serer a través de la revista Arbor (1944-1953

    Directory of Open Access Journals (Sweden)

    Díaz Hernández, Onésimo

    2015-10-01

    Full Text Available This article examines the construction of a political-cultural project in the magazine Arbor in the early years of Franco’s dictatorship. Rafael Calvo Serer, the journal’s editor (1951-1953, established Arbor’s monarchical and traditionalist ideology in contrast to the notion of the new Christendom defended by Jacques Maritain. Finally, it analyses the tactics Calvo Serer deployed to protest against the cultural project of Joaquín Ruiz-Giménez, Minister of Education from 1951 to 1956.En este artículo se trata de la construcción de un proyecto político-cultural a través de la revista Arbor en los primeros años del franquismo. El director de Arbor (1951-1953, Rafael Calvo Serer, formó un pensamiento tradicionalista y monárquico contrario a la idea de nueva cristiandad defendida por Jacques Maritain. Por último, se analizan las tácticas empleadas por Rafael Calvo Serer para desestabilizar el proyecto cultural de Joaquín Ruiz-Giménez, ministro de Educación del gobierno de Franco entre 1951 y 1956.

  3. UNIVERSIDAD NACIONAL EXPERIMENTAL “RAFAEL MARÍA BARALT”: IMAGEN CORPORATIVA EXTERNA

    Directory of Open Access Journals (Sweden)

    Julio Rafael Pire Morales

    2014-04-01

    Full Text Available El estudio tuvo como propósito describir la Universidad Nacional Experimental “Rafael María Baralt” desde su imagen corporativa externa en el municipio Miranda estado Zulia. El estudio fue de carácter descriptivo, con diseño no experimental transversal cuya población estuvo conformada por 2 grupos 18 sujetos denominados comerciantes del sector productivo y 384 jefes de las familias que habitan el 13 sectores de la Parroquia Altagracia, municipio Miranda a quienes se les aplicó un instrumento cuestionario de doble versión tipo Likert, cuya confiabilidad se alcanzó con la realización de una prueba piloto a 20 sujetos obteniendo un alfa cronbach de 0,8494. El análisis de los resultados se llevó a cabo con una estadística descriptiva a través de frecuencia absoluta y relativa tal como se observa en el siguiente apartado. Como conclusiones se resaltó. Los públicos responden tener una actitud positiva cuando opinan que la UNERMB ha contribuido en el desarrollo del Municipio Miranda y mejorado la calidad de vida de sus habitantes, al tiempo que la comunidad se siente orgullosa de contar con esta institución en el municipio Miranda.

  4. Symposium in commemoration of Charles Peyrou, Lucien Montanet and Rafael Armenteros

    CERN Document Server

    CERN. Geneva

    2004-01-01

    On Wednesday 16 June at 4.00 p.m. a symposium will be held in the CERN Main Auditorium in memory of three great figures in the history of CERN and its Research Programmes, namely Charles Peyrou, Lucien Montanet and Rafael Armenteros, all of whom recently passed away. Each of them, notably led CERN's bubble-chamber programmes. Tributes appeared in the Weekly Bulletin issues 17/2003, 28/2003 and 14/2004. Since the symposium will take place on the day between the Scientific Policy Committee (SPC) meeting and the Council session, it will be possible for many colleagues and friends to attend alongside family members. All CERN staff members who wish to attend are also invited. Eight speakers who were close to each of the men at various times will share their vivid recollections, recalling the major scientific contributions they made and underlining the important role they played both at CERN and in the international scientific community. At the end of the symposium, drinks will be served at the invitation of the Di...

  5. Symposium in commemoration of Charles Peyrou, Lucien Montanet et Rafael Armenteros

    CERN Document Server

    2004-01-01

    On Wednesday 16 June at 4.00 p.m. a symposium will be held in the CERN Main Auditorium in memory of three great figures in the history of CERN and its Research Programmes, namely Charles Peyrou, Lucien Montanet and Rafael Armenteros, all of whom recently passed away. Each of them, notably led CERN's bubble-chamber programmes. Tributes appeared in the Weekly Bulletin issues 17/2003, 28/2003 and 14/2004. Since the symposium will take place on the day between the Scientific Policy Committee (SPC) meeting and the Council session, it will be possible for many colleagues and friends to attend alongside family members. All CERN staff members who wish to attend are also invited. Eight speakers who were close to each of the men at various times will share their vivid recollections, recalling the major scientific contributions they made and underlining the important role they played both at CERN and in the international scientific community. At the end of the symposium, drinks will be served at the invitation of the...

  6. Symposium in commemoration of Charles Peyrou, Lucien Montanet and Rafael Armenteros

    CERN Document Server

    2004-01-01

    On Wednesday 16 June at 4.00 p.m. a symposium will be held in the CERN Main Auditorium in memory of three great figures in the history of CERN and its Research Programmes, namely Charles Peyrou, Lucien Montanet and Rafael Armenteros, all of whom recently passed away. Each of them, notably led CERN's bubble-chamber programmes. Tributes appeared in the Weekly Bulletin issues 17/2003, 28/2003 and 14/2004. Since the symposium will take place on the day between the Scientific Policy Committee (SPC) meeting and the Council session, it will be possible for many colleagues and friends to attend alongside family members. All CERN staff members who wish to attend are also invited. Eight speakers who were close to each of the men at various times will share their vivid recollections, recalling the major scientific contributions they made and underlining the important role they played both at CERN and in the international scientific community. At the end of the symposium, drinks will be served at the invitation of the D...

  7. [Genitourinary tuberculosis in the urologic works of Professor Rafael Mollá Rodrigo].

    Science.gov (United States)

    Cánovas Ivorra, Jose Antonio; Tramoyeres Galván, Alfredo; Sánchez Ballester, Francisco; de la Torre Abril, Luis; Ordoño Domínguez, Felipe; Navalón Verdejo, Pedro; Ramada Benlloch, Francisco; López Alcina, Emilio; Pérez Albacete, Mariano; Zaragoza Orts, Julio

    2005-04-01

    Professor Rafael Molla Rodrigo is considered by some the author who contributed with his scientific work and solid technique to consolidate Urology as a speciality in Valencia. Such importance is also perceived in a national level, as demonstrated by the fact that he belonged to the first board of the Spanish Association of Urology and contributed to its foundation in the two-year period 1910--1911, from his position of head of the department of Surgical Therapy and Operations at the Central University. Genitourinary tuberculosis is one of the most outstanding chapters of his extensive works. We reviewed all his works, selecting all original articles about genitourinary tuberculosis. Original articles have been obtained from the journals Revista de Higiene y Tuberculosis, La Medicina Valenciana, Revista Valenciana de Ciencias Médicas y Policínica, and from his two most important books, Clinical Lessons In Urology and Clinical Lessons in Urology and Genitourinary Surgery. Throughout his work he analyzes features of relevance about this disease, such as diagnosis, about which he emphasizes the clinical and bacteriological difficulties, and treatment, which was only feasible by precocious nephrectomy. He dedicates a great part of his work to the study of this pathology and defends a precocious diagnosis in order to perform the only treatment that had demonstrated efficacy. He also exposes the symptoms and variety of clinical presentations, as well as diagnosis through separate kidney catheterization with the aim to determine unilateral involvement.

  8. Las organizaciones indígenas y el gobierno de Rafael Correa

    Directory of Open Access Journals (Sweden)

    Jorge León Trujillo

    2010-05-01

    Full Text Available Este texto analiza la dinámica de las relaciones entre organizaciones indígenas y el gobierno de Rafael Correa, realizando antes un apretado recorrido de estas relaciones en distintos gobiernos, en especial aquellos que siguieron al levantamiento indígena de 1990. Hecho que permitió a los indígenas conquistar un espacio en la escena política y construir una representación propia, que permitiera llevar adelante sus demandas de citadinidad. Demandas que se han concretado básicamente por medio de la protesta como mecanismo de presión. Sin embargo, desde finales de los años noventa, la organización indígena ha perdido sus orientaciones y su capacidad de negociación con el estado. En este contexto, las relaciones con del Gobierno actual, a pesar de las varias coincidencias políticas que las convierten por momentos en aliados, revelan una clara disputa entre estas dos entidades sobre las exigencias del reconocimiento dede la diferencia y el crecimiento de igualdad.

  9. 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...

  10. 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...

  11. 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...

  12. Colorado Plateau magmatism and uplift by warming of heterogeneous lithosphere.

    Science.gov (United States)

    Roy, Mousumi; Jordan, Thomas H; Pederson, Joel

    2009-06-18

    The forces that drove rock uplift of the low-relief, high-elevation, tectonically stable Colorado Plateau are the subject of long-standing debate. While the adjacent Basin and Range province and Rio Grande rift province underwent Cenozoic shortening followed by extension, the plateau experienced approximately 2 km of rock uplift without significant internal deformation. Here we propose that warming of the thicker, more iron-depleted Colorado Plateau lithosphere over 35-40 Myr following mid-Cenozoic removal of the Farallon plate from beneath North America is the primary mechanism driving rock uplift. In our model, conductive re-equilibration not only explains the rock uplift of the plateau, but also provides a robust geodynamic interpretation of observed contrasts between the Colorado Plateau margins and the plateau interior. In particular, the model matches the encroachment of Cenozoic magmatism from the margins towards the plateau interior at rates of 3-6 km Myr(-1) and is consistent with lower seismic velocities and more negative Bouguer gravity at the margins than in the plateau interior. We suggest that warming of heterogeneous lithosphere is a powerful mechanism for driving epeirogenic rock uplift of the Colorado Plateau and may be of general importance in plate-interior settings.

  13. Ongoing drought-induced uplift in the western United States.

    Science.gov (United States)

    Borsa, Adrian Antal; Agnew, Duncan Carr; Cayan, Daniel R.

    2014-01-01

    The western United States has been experiencing severe drought since 2013. The solid earth response to the accompanying loss of surface and near-surface water mass should be a broad region of uplift. We use seasonally adjusted time series from continuously operating global positioning system stations to measure this uplift, which we invert to estimate mass loss. The median uplift is 5 millimeters (mm), with values up to 15 mm in California’s mountains. The associated pattern of mass loss, ranging up to 50 centimeters (cm) of water equivalent, is consistent with observed decreases in precipitation and streamflow. We estimate the total deficit to be ~240 gigatons, equivalent to a 10-cm layer of water over the entire region, or the annual mass loss from the Greenland Ice Sheet.

  14. Alpine glacial topography and the rate of rock column uplift

    DEFF Research Database (Denmark)

    Pedersen, Vivi Kathrine; Egholm, D.L.; Nielsen, S.B.

    2010-01-01

    The present study investigates the influence of alpine glacial erosion on the morphology and relief distribution of mountain regions associated with varying rock column uplift rates. We take a global approach and analyse the surface area distribution of all mountain regions affected by glacial....... On the basis of this decay, the analysed mountain regions fall within three distinct groupsprimarily reflecting variations in average values of rock columnuplift rates.Mountain ranges affected by rapid rock column uplift display high above-snowline relief and large decay lengths, whereas inactive orogens have...

  15. Evidence for Holocenic uplift at Somma-Vesuvius

    Science.gov (United States)

    Marturano, Aldo; Aiello, Giuseppe; Barra, Diana; Fedele, Lorenzo; Grifa, Celestino; Morra, Vincenzo; Berg, Ria; Varone, Antonio

    2009-07-01

    Detailed stratigraphical, archaeological, micropalaeontological, archaeometrical and petrochemical analyses of samples from trenches and boreholes at insula of Casti Amanti, in Pompeii, allowed a faithful reconstruction of the recent environmental evolution of the site. The present data clearly indicate the alternation of both subaerial and shallow marine conditions during Holocene times. Taking into account the relative local sea level variations, a ~ 30 m ground uplift event in the last 6 kyr (with an average vertical uplift rate of ~ 5 mm/yr) was inferred for the first time.

  16. In Memoriam, En Homenaje a los Drs. Rafael Barberi Zamorano y Ernesto Plata Rueda

    Directory of Open Access Journals (Sweden)

    Eduardo Alvarez P.

    1992-09-01

    Full Text Available

    Y se marcharon…. Partieron como si existiera un acuerdo previo para realizar el encuentro definitivo en la eternidad. Después de una ejemplar y fructífera existencia, plena de múltiples realizaciones, se hace indispensable el goce de la paz eterna. Partieron, pese nos dejaron la huella de dos vidas que marcharon paralelamente con destino hacia un mismo objetivo, el niño colombiano.

    Este ser, la razón primera de nuestra especialidad, incapaz de mentir, inocente, indiferente ante lo bueno y lo malo, indefenso, amante del mundo que lo rodea, tierno y cariñoso. Fueron dos ilustres colombianos que caminaron por el mismo sendero, con diferente fin. Ernesto Plata Rueda en el campo de la investigación y la docencia y Rafael Barberi Zamorano en la dirección y administración del Hospital de la Misericordia, cuna de la pediatría en nuestra patria y recurso en salud en favor de las clases sociales menos favorecidas.

    Como extraña y feliz coincidencia el destino los ubicó a pocos metros de distancia el uno del otro, lo que facilitó para que sus labores fueran siempre acordes y se desarrollaran en perfecta armonía por cerca de tres lustros; esta circunstancia permite al final presentar a las generaciones futuras toda esa inmensa gama de realizaciones que hoy quedan en los campos de la salud y la ciencia. Tuve la inmensa fortuna de ser testigo cercano del diario desarrollo de sus actividades y es por esta razón por la cual no puedo retirar de la mente la capacidad de trabajo, dedicación y amor a los pacientes, al Hospital, de Rafael Barberi un gran filántropo, hombre tímido y sencillo, virtudes que lo hicieron más grande y admirable; no le faltó jamás el valor suficiente dentro de la mayor honestidad y respeto para convertirse en aguerrido defensor de la Institución y de sus colaboradores, también fué geperoso y bondadoso al otorgar el perdón y el olvido a sus ocasionales detractores.

    Ernesto Plata Rueda, el

  17. Paleohydrogeology of the San Joaquin basin, California

    Science.gov (United States)

    Wilson, A.M.; Garven, G.; Boles, J.R.

    1999-01-01

    Mass transport can have a significant effect on chemical diagenetic processes in sedimentary basins. This paper presents results from the first part of a study that was designed to explore the role of an evolving hydrodynamic system in driving mass transport and chemical diagenesis, using the San Joaquin basin of California as a field area. We use coupled hydrogeologic models to establish the paleohydrogeology, thermal history, and behavior of nonreactive solutes in the basin. These models rely on extensive geological information and account for variable-density fluid flow, heat transport, solute transport, tectonic uplift, sediment compaction, and clay dehydration. In our numerical simulations, tectonic uplift and ocean regression led to large-scale changes in fluid flow and composition by strengthening topography-driven fluid flow and allowing deep influx of fresh ground water in the San Joaquin basin. Sediment compaction due to rapid deposition created moderate overpressures, leading to upward flow from depth. The unusual distribution of salinity in the basin reflects influx of fresh ground water to depths of as much as 2 km and dilution of saline fluids by dehydration reactions at depths greater than ???2.5 km. Simulations projecting the future salinity of the basin show marine salinities persisting for more than 10 m.y. after ocean regression. Results also show a change from topography-to compaction-driven flow in the Stevens Sandstone at ca. 5 Ma that coincides with an observed change in the diagenetic sequence. Results of this investigation provide a framework for future hydrologic research exploring the link between fluid flow and diagenesis.

  18. Obituario, Académico Rafael Peralta Cayón

    Directory of Open Access Journals (Sweden)

    Héctor Pedraza

    1989-09-01

    Full Text Available

    Nuestra Corporación registró con gran pesar el fallecimiento del doctor Rafael Peralta que ocurrió cuando comenzaba a preparar la celebración del cincuentenario de promoción, estudios (1933-1938 en la Facultad de Medicina de la Universidad Nacional, a la cual perteneció junto con el doctor Guillermo Aparicio, también desaparecido, quienes siempre fueron los organizadores del evento; primero cada diez años y últimamente cada cinco. Promoción brillante constituida por 59 médicos de los cuales viven la mitad. Entre los ya fallecidos citamos preclaros nombres de profesionales que honraron al claustro de la Universidad Nacional: Octavio Archila, Jaime Corral Maldonado, José Antonio Jácome Valderrama, J. Pablo Leyva, Daniel Mariño Zuleta, Eugenio Ordóñez, Francisco Montaña Cuéllar, Rafael Ramírez Merchán. Si fuésemos estrictamente justos tendríamos que nombrar a toda la promoción del 38.

    El doctor Rafael Peralta, además de su ético y desinteresado ejercicio profesional, se dedicó desde muy temprano a la docencia médica, para lo cual siguió la carrera del profesorado mediante rigurosos concursos; ascendió a titular de obstetricia en los servicios de los profesores José del Carmen Acosta, Victor Domingo Rodríguez, Carlos Mojica; los discipulos no olvidarán las enseñanzas y destacada personalidad médica.

    El profesor Peralta se preocupó además por las letras, ya científicas o literarias, como su Tratado de Obstetricia, muy apreciado por los estudiantes, además de numerosos articulo s en las revistas sobre la especialidad.

    Entre las obras literarias destacamos la dedicada a su ciudad natal, “Santa Marta” , de donde fue un buen hijo que nunca se desvinculó de ella; allí, encontramos un detalle muy propio de él: relata que construyó en dicha ciudad uno de los primeros edificios de varios pisos, el cual le dio muchos sinsabores administrativos, pero nunca olvidó a sus colegas. En uno de

  19. Ironia e genealogia em A estranha nação de Rafael Mendes, de Moacyr Scliar

    Directory of Open Access Journals (Sweden)

    Glauber Pereira Quintão

    2009-03-01

    Full Text Available A ironia tem, no romance, a capacidade de promover a desconstrução das hierarquias, impedindo a linearidade e a concepção histórica de progresso. Este artigo analisa como a ironia, a partir da idéia de “acontecimento” e “cena”, de Linda Hutcheon, seria inerente ao conceito moderno de genealogia, que questiona a crença em uma origem absoluta, no romance A estranha nação de Rafael Mendes, de Moacyr Scliar.

  20. Aspectos epidemiológicos de la inducción del trabajo de parto en la Clínica de Maternidad Rafael Calvo C. Cartagena, Colombia

    OpenAIRE

    Edgar E. Rivas-Perdomo

    2013-01-01

    ResumenObjetivos: Describir los factores de riesgo para la inducción o conducción del trabajo de parto y sus resultados en la Clínica de Maternidad Rafael Calvo, Cartagena, Colombia. Materiales y Métodos: Se incluyeron a todas las pacientes (n = 98 de un total de 859) cuyos partos fueron inducidos o conducidos en la Clínica de Maternidad Rafael Calvo de Cartagena, durante el mes de Agosto-2004. Se consideraron variables clínicas y no clínicas. Se estudió por medio de análisis estratificado. R...

  1. La importancia del dibujo en la obra de Rafael Moneo. A propósito de una exposición

    OpenAIRE

    Franco Taboada, José Antonio

    2014-01-01

    [EN] This article explores the pre-eminence of the drawing in the work of Rafael Moneo, coinciding with the first retrospective of the architect’s career. The study examines how the strong focus of the exhibition on the role of the drawing, most notably in the exhibition catalogue, makes this retrospective a veritable manifesto for Moneo’s architectural thought [ES] Se investiga la extraordinaria importancia que concede al dibujo Rafael Moneo. El análisis se realiza al hilo de la única exp...

  2. Percepción del riesgo en gestantes adolescentes del Policlínico “Rafael Valdés”, año 2009.

    OpenAIRE

    2011-01-01

    Fundamento: el embarazo en la adolescencia se asocia a mayores riesgos médicos, problemas psicológicos y desventajas sociales. Las adolescentes, han demostrado desconocimiento acerca de los riesgos de un embarazo a esta edad. Objetivo: identificar la precepción de riesgo en embarazadas adolescentes del policlínico “Rafael Valdés”. Método: estudio descriptivo, prospectivo de las 79 embarazadas adolescentes del Policlínico “Rafael Valdés”, del Cotorro, La Habana, del 1 1ro de enero al 31 de dic...

  3. Modeling of the Uplift Response of Buried Pipelines

    DEFF Research Database (Denmark)

    Choobbasti, Asskar Janalizadeh; Vahdatirad, Mohammadjavad; Firouzianbandpey, Sarah;

    2009-01-01

    Over the years, researchers have tried to understand the complex behavior of buried pipelines subjected to ground ruptures due to landslides, earthquakes, faults and uplift forces in shallow trenches. In an attempt to understand this complex behavior, an experimental investigation program has been...

  4. Deep mantle forces and the uplift of the Colorado Plateau

    Energy Technology Data Exchange (ETDEWEB)

    Moucha, R; Forte, A M; Rowley, D B; Mitrovica, J X; Simmons, N A; Grand, S P

    2009-06-23

    Since the advent of plate tectonics, it has been speculated that the northern extension of the East Pacific Rise, specifically its mantle source, has been over-ridden by the North American Plate in the last 30 Myrs. Consequently, it has also been postulated that the opening of the Gulf of California, the extension in the Basin and Range province, and the uplift of the Colorado Plateau are the resulting continental expressions of the over-ridden mantle source of the East Pacific Rise. However, only qualitative models based solely on surface observations and heuristic, simplified conceptions of mantle convection have been used in support or against this hypothesis. We introduce a quantitative model of mantle convection that reconstructs the detailed motion of a warm mantle upwelling over the last 30 Myrs and its relative advance towards the interior of the southwestern USA. The onset and evolution of the crustal uplift in the central Basin and Range province and the Colorado Plateau is determined by tracking the topographic swell due to this mantle upwelling through time. We show that (1) the extension and magmatism in the central Basin and Range province between 25 and 10 Ma coincides with the reconstructed past position of this focused upwelling, and (2) the southwestern portion of the Colorado Plateau experienced significant uplift between 10 Ma and 5 Ma that progressed towards the northeastern portion of the plateau. These uplift estimates are consistent with a young, ca. 6 Ma, Grand Canyon model and the recent commencement of mafic magmatism.

  5. The tectonic uplift of the Hua Shan in the Cenozoic

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Six granite samples were collected from sixdifference elevation locations at the Hua Shah in a mainridge of the Qinling Mountain. Apatite and zircon separatedfrom these six samples were dated by the fission track tech-nique. An assessment of the Cenozoic uplift or exhumationrate was obtained from the altitude difference of samplingsamples dated by fission track, and from the difference offission track dates of both apatite and zircon for a sample.The preliminary results suggest that the beginning of upliftof the Hua Shan was as early as 68.2 MaBP and the upliftrates for different periods are 0.02-0.19 mm/a (from theelevation difference) or 0.12-0.16 mm/a (from two mineralfission track dates). The average uplift rate is 0.12 mm/a(from the elevation difference) or 0.14 mm/a (from two min-eral fission track dates). The uplift of the Hua Shan mightaccelerate since (17.8+2.0) MaBP, and the average uplift rateis about 0.19 mm/a.

  6. New Borehole Strain System Detects Uplift at Campi Flegrei

    Science.gov (United States)

    Scarpa, Roberto; Amoruso, Antonella; Crescentini, Luca; Romano, Pierdomenico; De Cesare, Walter; Martini, Marcello; Scarpato, Giovanni; Linde, Alan T.; Sacks, Selwyn I.

    2007-05-01

    Campi Flegrei and Mount Vesuvius are active Italian volcanoes though presently in a quiescent stage. The last eruption of Mount Vesuvius occurred during the spring of 1944. Campi Flegrei last erupted in 1538 but experienced a subsidence trend from the early 1900s to 1970, which was followed by episodes of ground uplift accompanied by seismic swarms.

  7. The San Andreas fault in the San Francisco Bay region, California: Structure and kinematics of a Young plate boundary

    Science.gov (United States)

    Jachens, R.C.; Zoback, M.L.

    1999-01-01

    with continued strike-slip movement) may explain the progressive narrowing of the basin to the southeast and the puzzling recent uplift of the Merced Formation in a predominantly extensional (pull-apart basin) setting. The 1906 San Francisco earthquake may have nucleated within the step-over region, and the step-over places a strand of the San Andreas fault 3 km closer to downtown San Francisco than previously thought.

  8. Violencia y destrucción del orden en Cualquier forma de morir, de Rafael Menjívar (Violence and Destruction of Order in Cualquier forma de morir, by Rafael Menjívar

    Directory of Open Access Journals (Sweden)

    Gabriel Baltodano Román

    2015-11-01

    Full Text Available Se analizan los simbolismos de la novela Cualquier forma de morir (2006, del escritor salvadoreño Rafael Menjívar (1959-2011. Esta novela negra contemporánea trata acerca de la destrucción del orden social por causa de la violencia del narcotráfico. En el relato, priva una perspectiva determinada por el empleo de imágenes propias del mito, en particular, una visión apocalíptica de la sociedad mexicana. Tal recurso al mito forma parte de una tendencia común en la nueva ficción criminal hispanoamericana. This article addresses the symbolism in the novel Cualquier forma de morir (2006, by Rafael Menjívar (El Salvador; 1959-2011. This contemporary black novel deals with the destruction of social order due to violence from drug trafficking. As the novel unfolds, the prevailing perspective is determined by the presence of images corresponding to the myth, in particular, of an apocalyptic view of Mexican society. That use of the myth is part of a common tendency in new Latin American crime fiction.

  9. Earthquakes, Uplift, and Landscape Evolution in the NW Himalayas

    Science.gov (United States)

    Shahzad, F.; Mahmood, S.; Gloaguen, R.

    2009-05-01

    The terrain between Main Mantle Thrust to Salt Range Thrust in the NW Himalayas has been characterized by surface and subsurface features with variable tectonic activity. These features show relatively variable tectonic activity, existence of blind faults and basement faulting. In the present study, we use seismological and remote sensing analysis backed by field observations to investigate the relationship between earthquakes, uplift, and landscape evolution. We use nonlinear analysis to understand the earthquake dynamics in relation to surface faults and blind faults. The fractal analysis of the seismicity in three subsurface features of the area is used to characterize the roughness of the faults' surface. We find a high fault surface roughness in the Indus Kohistan Seismic Zone (IKSZ). It is concluded that the area is in the process of being uplifted and landscape is evolving. This evolution is further investigated using a set of geomorphological analyses consisting of extracting a drainage network from digital elevation models (DEM). The extracted streams are analysed using to calculate geomorphic indices and relative uplift rates. These analyses were applied on Indus, Swat, Kabul, Kunhar, Kishanganga, Poonch, Jehlum, Swan and Kurram, Kabul Rivers and their associate tributaries. The analyses provide us with the spatial variation of relative uplift based upon specific streams. We found that the Hazara Kashmir Syntaxis and Nanga Parbat Haramosh Massif are subject to a relatively high uplift. It is observed that the neotectonic activities are linearizing the drainage network from meandering pattern. We analyse the complete drainage texture using fractal dimension and lacunarity analysis. The analysis of the fractal dimension (D) employing box counting methods is calculated with a moving window approach and the lower values of D demonstrate the effect of neotectonic activity. The locations with lower but similar D values are further differentiated using

  10. Shaping the Rwenzoris: balancing uplift, erosion, and glaciation

    Science.gov (United States)

    Kaufmann, Georg; Hinderer, Matthias; Romanov, Douchko

    2016-09-01

    The Rwenzori Mountains in Africa represent an extremely uplifted basement fault block at the eastern edge of the western branch of the East African Rift system, a large-scale rift system controlled by extensional stresses. The rugged alpine topography reaches an altitude of up to 5109 m, and the highest parts are ice-covered. Glacial landforms and moraines proof repeated more extensive glaciations during the last glacial cycles. In order to elucidate magnitudes and the varying role of erosional processes in shaping the relief of the Rwenzori Mountains over the past 2 mill. years, we performed numerical simulations with the landscape evolution programme ULTIMA THULE. It is controlled by a climate driver with temperature as a master variable as well as changing precipitation and evapotranspiration over time. The morphological processes considered are fluvial erosion, hillslope diffusion, and glacial abrasion, and the latter controlled by the simulated glaciation of the landscape. We provide three sets of model runs: the first one starting from the present-day topography and running for approx. 800 ka, the second one extending the modelling period to 2 Ma, and the third one starting from a peneplain and evolving for 2 Ma. Our results provide constraints on the temperature history of the Rwenzori Mountains, the interplay of morphological degradation and tectonic uplift, and a time frame for the formation of the mountain chain from a peneplain to the present relief. The modelled landscape evolves from a peneplain 2 Ma ago to a Rwenzori-type mountain range, when the fairly strong average rock uplift of 1-2 mm year-1 is compensated by a strong fluvial erosion component. The rock uplift rate is needed to obtain elevations above the equilibrium line altitude around 500 ka BP and results in surface uplift over time. Around that time, a periodic ice cap appears in the models, and glacial abrasion then limits the height of the Rwenzori Mountains to its present elevation.

  11. Cenozoic Uplift, Erosion and Dynamic Support of Madagascar

    Science.gov (United States)

    Stephenson, Simon; White, Nicky

    2016-04-01

    The physiography of Madagascar is characterised by high-elevation but low-relief topography; 42% of the landscape is above 500 m in elevation. Eocene (marine) nummulitic (marine) limestones at elevations of ˜400 m above sea level and newly dated, emergent 125 ka coral reefs suggest that Madagascar has experienced differential vertical motions during Cenozoic times. Malagasy rivers are often deeply incised and contain steepened reaches, implying that they have responded to changes in regional uplift rate. However, low temperature thermochronology and 10Be derived erosion rates suggest that both Cenozoic and Recent average denudation rates have been low. Extensive laterite-capped, low-relief surfaces also suggest that there have been long periods of tectonic quiescence. In contrast, the modern landscape is characterised by erosional gullies (i.e. lavaka), with very high local erosion rates. To bridge the gap between this disparate evidence, we inverted 2566 longitudinal river profiles using a damped non-negative, least-squares linear inversion to determine the history of regional uplift. We used a simplified version of the stream power erosional law. River profiles were extracted from the 3 arc-second Shuttle Radar Topography Mission (SRTM) digital elevation model. Calibration of the stream power erosional law is based upon Cenozoic limestones and new radiometrically dated marine terraces. The residual misfit between observed and calculated river profiles is small. Results suggest that Malagasy topography grew diachronously by 1-2 km over the last 15-20 Ma. Calculated uplift and denudation are consistent with independent observations. Thus drainage networks contain coherent signals that record regional uplift. The resultant waves of incision are the principal trigger for modern erosional processes. Admittance calculations, the history of basaltic volcanism and nearby oceanic residual age-depth measurements all suggest that as much as 0.8 - 1.1 km of Cenozoic uplift

  12. 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)…

  13. 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....

  14. Brote de síndrome febril en el Fuerte Militar Rafael Hoyos Rubio, distrito del Rímac, Lima, febrero de 2006

    OpenAIRE

    Súarez, Magna

    2006-01-01

    Desde el 2 de febrero de 2006 se han venido notificando casos de síndrome febril entre el personal del Fuerte Militar Rafael Hoyos Rubio, ubicado en el distrito del Rímac, en la jurisdicción de la Dirección de Salud Lima Norte.

  15. A New Destination for "The Flying Bus"?: The Implications of Orlando-Rican Migration for Luis Rafael Sanchez's "La guagua aerea"

    Science.gov (United States)

    Barreneche, Gabriel Ignacio; Lombardi, Jane; Ramos-Flores, Hector

    2012-01-01

    Puerto Rican author Luis Rafael Sanchez's "La guagua aerea" explores the duality, hybridity, and fluidity of US-Puerto Rican identity through the frequent travel of migrants between New York City (the traditional destination city for Puerto Rican migrants) and the island. In recent years, however, the "flying bus" has adopted a…

  16. HYDRODYNAMIC UPLIFT FORCE AND STABILITY OF ARCIFORM LUNGE POOL

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Compared with general trapeziform plunge pools, an arciform plunge pool has its advantages, e.g. Less excavate quantity, higher stability, etc. In this paper, the hy-drodynamic pressure distribution on the soleplate of the arci-form plunge pool is measured under a relatively dangerous condition of operation. The result is helpful to the design of the arciform plunge pool. The result also shows that the difference between the maximum and the minimum pressures on the upward surface of the soleplate may cause an additional uplift force on the soleplate under certain condition and should be taken into consideration in the uplift force calculation of the soleplate. The scour experiment verifies the higher stability of the arciform plunge pool.

  17. Revisiting constraints on uplifts to de Sitter vacua

    CERN Document Server

    Bizet, Nana Cabo

    2016-01-01

    We revisit the issue of uplifting the potential to de Sitter (dS) vacua in type IIB flux compactifications of Kachru, Kallosh, Linde and Trivedi (KKLT). We shed light on some tension between two constraints on dS vacua in type IIB string theory. One is the well-known and much-discussed constraint which leads to the no-go theorem that can in principle be evaded. The other follows from 4-dimensional Einstein's equations, which has, however, been much less discussed in connection with the former constraint. In addition to the challenges previously posed, it is suggested that the uplifting scenarios, in particular, obstruct the evasion of the no-go theorem more strongly than one might have assumed.

  18. Harmonic Structure Predicts the Enjoyment of Uplifting Trance Music

    Science.gov (United States)

    Agres, Kat; Herremans, Dorien; Bigo, Louis; Conklin, Darrell

    2017-01-01

    An empirical investigation of how local harmonic structures (e.g., chord progressions) contribute to the experience and enjoyment of uplifting trance (UT) music is presented. The connection between rhythmic and percussive elements and resulting trance-like states has been highlighted by musicologists, but no research, to our knowledge, has explored whether repeated harmonic elements influence affective responses in listeners of trance music. Two alternative hypotheses are discussed, the first highlighting the direct relationship between repetition/complexity and enjoyment, and the second based on the theoretical inverted-U relationship described by the Wundt curve. We investigate the connection between harmonic structure and subjective enjoyment through interdisciplinary behavioral and computational methods: First we discuss an experiment in which listeners provided enjoyment ratings for computer-generated UT anthems with varying levels of harmonic repetition and complexity. The anthems were generated using a statistical model trained on a corpus of 100 uplifting trance anthems created for this purpose, and harmonic structure was constrained by imposing particular repetition structures (semiotic patterns defining the order of chords in the sequence) on a professional UT music production template. Second, the relationship between harmonic structure and enjoyment is further explored using two computational approaches, one based on average Information Content, and another that measures average tonal tension between chords. The results of the listening experiment indicate that harmonic repetition does in fact contribute to the enjoyment of uplifting trance music. More compelling evidence was found for the second hypothesis discussed above, however some maximally repetitive structures were also preferred. Both computational models provide evidence for a Wundt-type relationship between complexity and enjoyment. By systematically manipulating the structure of chord

  19. Neogene climate change and uplift in the Atacama Desert, Chile

    Science.gov (United States)

    Rech, Jason A.; Currie, Brian S.; Michalski, Greg; Cowan, Angela M.

    2006-09-01

    The relationship between Andean uplift and extreme desiccation of the west coast of South America is important for understanding the interplay between climate and tectonics in the Central Andes, yet it is poorly understood. Here we use soil morphological characteristics, salt chemistry, and mass independent fractionation anomalies (Δ17O values) in dated paleosols to reconstruct a middle Miocene climatic transition from semiaridity to extreme hyperaridity in the Atacama Desert. Paleosols along the southeastern margin of the Calama Basin change from calcic Vertisols with root traces, slickensides, and gleyed horizons to an extremely mature salic Gypsisol with pedogenic nitrate. We interpret this transition, which occurred between 19 and 13 Ma, to represent a change in precipitation from >200 mm/yr to 2 km; the uplift blocked moisture from the South American summer monsoon from entering the Atacama. The mid-Miocene Gypsisol with pedogenic nitrate is located at elevations between 2900 and 3400 m in the Calama Basin, significantly higher than modern nitrate soils, which occur below ˜2500 m. Modern and Quaternary soils in this elevation zone contain soil carbonate and lack pedogenic gypsum and nitrate. We infer that >900 m of local surface uplift over the past 10 m.y. displaced these nitrate paleosols relative to modern nitrate soils and caused a return to wetter conditions in the Calama Basin by decreasing local air temperatures and creating an orographic barrier to Pacific air masses.

  20. New CHIRP Seismic Images of Submarine Terraces Around San Clemente Island Constrain its Tectonic Evolution and Geomorphology

    Science.gov (United States)

    Derosier, B.; Driscoll, N. W.; Graves, L. G.; Holmes, J. J.; Nicholson, C.

    2015-12-01

    New High-resolution CHIRP data acquired on the R/V Point Loma in 2015 imaged flights of submarine Terraces off of San Clemente Island. Outboard terraces at ~90 to 115 m below sea level (using a nominal water column velocity of 1500 m/s) may correlate with the Marine Isotope Stage 2 (MIS2); the last glacial maximum (LGM). Submarine terraces were mapped on both the gentle sloping windward (west) and the steeper sloping leeward (east) sides of San Clemente Island. The submarine terrace's depths are roughly the same on both sides of the island and suggest uniform uplift. These findings are consistent with the onshore mapping of terraces on San Clemente Island. The island exhibits a marked asymmetry both onshore and offshore, with a steeply dipping eastern margin and a gentle dipping western margin. This marked asymmetry cannot be explained by the uniform uplift of San Clemente Island based on the observed onshore and offshore terraces. In our model, the asymmetry of San Clemente Island records an early phase of predominantly extensional deformation during the middle to late Miocene, with San Clemente Island being the footwall block. Such asymmetry is also observed across the 30-mile bank and the Coronado Bank with steeply dipping eastern margins and gently dipping western margins. New regional multichannel seismic data and reprocessed industry data show no sediment divergence along the hangingwall blocks, which suggests that extensional deformation predated sedimentation. Finally, the elevations of the terraces on San Clemente Island are similar to those observed on the mainland from Baja California to Newport Beach, requiring any tectonic model fitting the uplift pattern of mainland terraces to account for the similar elevations not only along the margin but also across the margin out to 70 nautical miles offshore.

  1. Análisis medicolegal de las muertes ocurridas en el foco de un incendio: tragedia del Hospital Dr. Rafael Ángel Calderón Guardia en julio del 2005 Medical legal analysis of the deaths occurred in the focus of a fire: tragedy at Dr. Rafael Angel Calderon Guardia Hospital in July, 2005

    Directory of Open Access Journals (Sweden)

    Dra. Zarela Abarca Villalobos

    2006-09-01

    Full Text Available El pasado 12 de julio del 2005, el Hospital Dr. Rafael Ángel Calderón Guardia, uno de los principales centros médicos públicos de Costa Rica sufrió un incendio parcial en la parte más antigua de su estructura. El siniestro causó la muerte de 21 personas, 19 de ellas en el mismo sitio de la tragedia, pérdidas materiales por más de 20 millones de dólares y un menoscabo significativo al sistema hospitalario público costarricense. En el presente trabajo se analizan desde el punto de vista médico legal, este desastre y la totalidad de muertes ocurridas en focos de incendios en Costa Rica, en el período comprendido entre los años 2000 al 2005, y se establece un perfil demográfico de las víctimas, se comparan los hallazgos de las autopsias y los resultados de los exámenes complementarios solicitados. Esto con el fin de sugerir un manejo uniforme por parte del Médico Forense, frente a cadáveres recuperados de incendios, incluyendo cuerpos carbonizados y siniestros con gran número de víctimas mortales.Last July 12th 2005, in the "Dr. Calderon Guardia" Hospital, located in San José, Costa Rica, a tragic fire happened in the oldest section of its structure. This hospital is one of the main public medical centers in our country. In the fire, 21 deaths were produced: 19 of them inside the building. Also, material losses were produced for more than 20 million dollars and a serious reduction in the public hospital system in Costa Rica. In this paper, we are doing a forensic analysis about this disaster and the totality of deaths that have happened in fire focus in Costa Rica in the period between years 2000 to the 2005, in order to establish a demographic profile of the victims to compare the findings of the autopsies and the results of complementary examinations. This, with the purpose of suggesting a uniform forensic pathological handling, of the bodies recovered from fire focuses, including carbonized bodies and fires with great number

  2. Rafael Pombo: La traduction et les échanges interculturels au XIXe siècle en Colombie

    OpenAIRE

    2008-01-01

    Le poète et traducteur Rafael Pombo (1833-1912) constitue un exemple intéressant pour découvrir les échanges dont ont bénéficié les intellectuels colombiens du XIXe siècle. Cette époque est caractérisée par la constitution des États-Nations, par la recherche de modèles à imiter dans tous les domaines, et par une ambiance « interculturelle » propice pour établir des contacts. Pendant son séjour de dix-sept ans aux États-Unis, Pombo a mené diverses activités telles que le contact avec les poèt...

  3. Rafael Mitjana (1869-1921): trayectoria de un musicólogo, compositor y diplomático regeneracionista

    OpenAIRE

    Pardo Cayuela, Antonio A.

    2013-01-01

    [spa] Rafael Mitjana (1869–1921) desarrolló una importante labor en el campo de la investigación musical, cuyos frutos más conocidos son el «descubrimiento» del Cancionero de Uppsala (Venecia, 1556) y “La musique en Espagne” (1914 y 1920), que es considerada la primera historia de la música española escrita de manera sistemática. Dentro de la obra musicológica de Mitjana destacan también numerosos trabajos sobre música y músicos españoles de los siglos XVI y XVII; por la calidad de sus inv...

  4. De la neurohistología a la neurofisiología: la obra de Rafael Lorente de Nó

    Directory of Open Access Journals (Sweden)

    Rodríguez Quiroga, Alfredo

    1999-06-01

    Full Text Available Not available.En el presente trabajo se analiza la carrera científica y académica del que fuera último discípulo de Cajal, Rafael Lorente de Nó (1902-1991. Iniciador, junto con Fernando de Castro, de la orientación fisiológica de la escuela histológica cajaliana, su trayectoria investigadora revela las dificultades que debieron afrontar los discípulos de Cajal para evolucionar de los estudios histológicos a los neurofisiológicos. El devenir posterior de ambos científicos muestra las carencias del sistema científico español de la década de los veinte y primeros años treinta para cultivar y desarrollar nuevas disciplinas.

  5. La reforma constitucional de Rafael Correa. El caso de la reelección presidencial en Ecuador

    Directory of Open Access Journals (Sweden)

    Ilka TREMINIO SÁNCHEZ

    2014-08-01

    Full Text Available El último proceso constituyente de Ecuador dio como resultado en 2008 una nueva Carta Magna que guiaría los preceptos de la llamada «Revolución Ciudadana» iniciada por Rafael Correa desde su llegada al poder por primera vez en 2007. El nuevo texto adoptó entre sus principales cambios institucionales la reelección inmediata. Con esta cláusula dejó a un lado el criterio de alternancia y se sumó a una creciente tendencia en la región latinoamericana asociada con la flexibilización de los límites a la reelección presidencial. La nueva cláusula le ha permitido al presidente permanecer en el cargo durante los últimos ocho años y en el espacio político se discute si el presidente buscará expandir aún más sus períodos de mandato siguiendo una lógica incremental del cambio constitucional. En este escenario, el presente trabajo se propone atender la pregunta: ¿Cómo consiguió Rafael Correa adoptar la reelección presidencial en el marco de la nueva Constitución política? Todo ello se discute a la luz de la celebración del 35.º aniversario del régimen democrático ecuatoriano y de las condiciones que garantizaron el éxito de la incorporación de la reelección inmediata en la Constitución de 2008.

  6. Terreneuvian stratigraphy and faunas from the Anabar Uplift, Siberia

    Directory of Open Access Journals (Sweden)

    Artem Kouchinsky

    2017-06-01

    Full Text Available Assemblages of mineralized skeletal fossils are described from limestone rocks of the lower Cambrian Nemakit-Daldyn, Medvezhya, Kugda-Yuryakh, Manykay, and lower Emyaksin formations exposed on the western and eastern flanks of the Anabar Uplift of the northern Siberian Platform. The skeletal fossil assemblages consist mainly of anabaritids, molluscs, and hyoliths, and also contain other taxa such as Blastulospongia, Chancelloria, Fomitchella, Hyolithellus, Platysolenites, Protohertzina, and Tianzhushanella. The first tianzhushanellids from Siberia, including Tianzhushanella tolli sp. nov., are described. The morphological variation of Protohertzina anabarica and Anabarites trisulcatus from their type locality is documented. Prominent longitudinal keels in the anabaritid Selindeochrea tripartita are demonstrated. Among the earliest molluscs from the Nemakit-Daldyn Formation, Purella and Yunnanopleura are interpreted as shelly parts of the same species. Fibrous microstructure of the outer layer and a wrinkled inner layer of mineralised cuticle in the organophosphatic sclerites of Fomitchella are reported. A siliceous composition of the globular fossil Blastulospongia is reported herein and a possible protistan affinity similar to Platysolenites is discussed. New carbon isotope data facilitate correlation both across the Anabar Uplift and with the Terreneuvian Series of the IUGS chronostratigraphical scheme for the Cambrian System. The base of Cambrian Stage 2 is provisionally placed herein within the Fortunian‒Cambrian Stage 2 transitional interval bracketed by the lowest appearance of Watsonella crosbyi and by a slightly higher horizon at the peak of carbon isotope excursion Iʹ from western flank of the Anabar Uplift. Correlation across the Siberian Platform of the fossiliferous Medvezhya and lower Emyaksin formations showing δ13Ccarb excursion Iʹ with the upper Sukharikha Formation containing excursion 5p and upper Ust’-Yudoma Formation

  7. Using the Nordic Geodetic Observing System for land uplift studies

    Science.gov (United States)

    Nordman, M.; Poutanen, M.; Kairus, A.; Virtanen, J.

    2014-07-01

    Geodetic observing systems have been planned and developed during the last decade. An ideal observing system consists of a network of geodetic observing stations with several techniques at the same site, publicly accessible databases, and as a product delivers data time series, combination of techniques or some other results obtained from the data sets. Globally, there is the International Association of Geodesy (IAG) Global Geodetic Observing System (GGOS), and there are ongoing attempts to create also regional observing systems. In this paper we introduce one regional system, the Nordic Geodetic Observing System (NGOS) hosted by the Nordic Geodetic Commission (NKG). Data availability and accessibility are one of the major issues today. We discuss in general data-related topics, and introduce a pilot database project of NGOS. As a demonstration of the use of such a database, we apply it for postglacial rebound studies in the Fennoscandian area. We compare land uplift values from three techniques, GNSS, tide gauges and absolute gravity, with the Nordic Geodetic Commission NKG2005LU land uplift model for Fennoscandia. The purpose is to evaluate the data obtained from different techniques and different sources and get the most reliable values for the uplift using publicly available data. The primary aim of observing systems will be to produce data and other products needed by multidisciplinary projects, such as Upper Mantle Dynamics and Quaternary Climate in Cratonic Areas (DynaQlim) or the European Plate Observing System (EPOS), but their needs may currently exceed the scope of an existing observing system. We discuss what requirements the projects pose to observing systems and their development. To make comparisons between different studies possible and reliable, the researcher should document what they have in detail, either in appendixes, supplementary material or some other available format.

  8. Mechanical insights into tectonic reorganization of the southern San Andreas fault system at ca. 1.1-1.5 Ma

    Science.gov (United States)

    Fattaruso, L.; Cooke, M. L.; Dorsey, R. J.

    2013-12-01

    Reorganization of active fault systems may result from changes in relative plate motion and evolving fault geometries. Between ~1.5 and 1.1 Ma the southern San Andreas fault system underwent a major reorganization that included initiation of the San Jacinto fault zone, termination of slip on the extensional West Salton detachment fault, and reorganization of structures in the Mecca Hills northeast of the San Andreas fault during a local change from transtension to transpression conditions with no known change in Pacific-North America relative plate motion. The active trace of the southern San Andreas fault itself also evolved during this time, with shifts in activity from the Mission Creek to Mill Creek to the present-day active fault geometry of the San Bernardino, Garnet Hill, and Banning strands of the San Andreas fault. Although there is a rich geologic record of these changes, the mechanisms that controlled abandonment of active faults, initiation of new strands, and shifting loci of uplift are poorly understood. We use three-dimensional mechanical Boundary Element Method models to investigate this major tectonic reorganization at ~1.1-1.5 Ma. Previous mechanical modeling studies have examined the evolution of the southern San Andreas fault geometry in the San Gorgonio Pass using a series of snapshot models of the succession of active fault geometries. We use the same approach to explore the role of fault interaction and tectonic loading in abandonment of the West Salton detachment fault and initiation of the San Jacinto fault. The snapshots include: (1) regional transtension with an active West Salton detachment fault and active Mission Creek strand of the San Andreas fault; (2) cessation of local extension in combination with initiation of the San Jacinto fault in which we explore both north-to-south propagation and simultaneous growth; (3) shift of activity to the Mill Creek strand of the San Andreas fault; and (4) shift of activity to the present

  9. Constraints on the uplift mechanism of northern Tibet

    Science.gov (United States)

    Lu, Haijian; Fu, Bihong; Shi, Pilong; Ma, Yuanxu; Li, Haibing

    2016-11-01

    Enhanced latest Oligocene to present uplift of northern Tibet is manifest in a variety of geological records. However, the main controversy is how the crust came to be thickened. Theories seeking to explain the growth of northern Tibet include removal of the mantle lithosphere beneath Tibet and the cessation of fast motion on major strike-slip faults. To address this issue, we conducted a detailed paleomagnetic study in the central Kumkol basin, south of the Altyn Tagh fault (ATF). Combined with our previous study from the Janggalsay area, north of the ATF, magnetic declination data suggest fast strike-slip motion for the left-lateral ATF between 22 and 15 Ma. However, the fast motion along the ATF terminated between 15 and Tibet at ∼15 Ma. Our results argue in support of a Mid-Miocene transition in tectonic regime from extrusion to distributed shortening in northern Tibet and emphasize the role of the ATF in governing widespread and simultaneous uplift of northern Tibet.

  10. Uplift, thermal unrest and magma intrusion at Yellowstone caldera.

    Science.gov (United States)

    Wicks, Charles W; Thatcher, Wayne; Dzurisin, Daniel; Svarc, Jerry

    2006-03-02

    The Yellowstone caldera, in the western United States, formed approximately 640,000 years ago when an explosive eruption ejected approximately 1,000 km3 of material. It is the youngest of a series of large calderas that formed during sequential cataclysmic eruptions that began approximately 16 million years ago in eastern Oregon and northern Nevada. The Yellowstone caldera was largely buried by rhyolite lava flows during eruptions that occurred from approximately 150,000 to approximately 70,000 years ago. Since the last eruption, Yellowstone has remained restless, with high seismicity, continuing uplift/subsidence episodes with movements of approximately 70 cm historically to several metres since the Pleistocene epoch, and intense hydrothermal activity. Here we present observations of a new mode of surface deformation in Yellowstone, based on radar interferometry observations from the European Space Agency ERS-2 satellite. We infer that the observed pattern of uplift and subsidence results from variations in the movement of molten basalt into and out of the Yellowstone volcanic system.

  11. East Antarctic rifting triggers uplift of the Gamburtsev Mountains.

    Science.gov (United States)

    Ferraccioli, Fausto; Finn, Carol A; Jordan, Tom A; Bell, Robin E; Anderson, Lester M; Damaske, Detlef

    2011-11-16

    The Gamburtsev Subglacial Mountains are the least understood tectonic feature on Earth, because they are completely hidden beneath the East Antarctic Ice Sheet. Their high elevation and youthful Alpine topography, combined with their location on the East Antarctic craton, creates a paradox that has puzzled researchers since the mountains were discovered in 1958. The preservation of Alpine topography in the Gamburtsevs may reflect extremely low long-term erosion rates beneath the ice sheet, but the mountains' origin remains problematic. Here we present the first comprehensive view of the crustal architecture and uplift mechanisms for the Gamburtsevs, derived from radar, gravity and magnetic data. The geophysical data define a 2,500-km-long rift system in East Antarctica surrounding the Gamburtsevs, and a thick crustal root beneath the range. We propose that the root formed during the Proterozoic assembly of interior East Antarctica (possibly about 1 Gyr ago), was preserved as in some old orogens and was rejuvenated during much later Permian (roughly 250 Myr ago) and Cretaceous (roughly 100 Myr ago) rifting. Much like East Africa, the interior of East Antarctica is a mosaic of Precambrian provinces affected by rifting processes. Our models show that the combination of rift-flank uplift, root buoyancy and the isostatic response to fluvial and glacial erosion explains the high elevation and relief of the Gamburtsevs. The evolution of the Gamburtsevs demonstrates that rifting and preserved orogenic roots can produce broad regions of high topography in continental interiors without significantly modifying the underlying Precambrian lithosphere.

  12. The Colorado front range: anatomy of a Laramide uplift

    Science.gov (United States)

    Kellogg, Karl; Bryant, Bruce; Reed, John C.

    2004-01-01

    Along a transect across the Front Range from Denver to the Blue River valley near Dillon, the trip explores the geologic framework and Laramide (Late Cretaceous to early Eocene) uplift history of this basement-cored mountain range. Specific items for discussion at various stops are (1) the sedimentary and structural record along the upturned eastern margin of the range, which contains several discontinuous, east-directed reverse faults; (2) the western structural margin of the range, which contains a minimum of 9 km of thrust overhang and is significantly different in structural style from the eastern margin; (3) mid- to late-Tertiary modifications to the western margin of the range from extensional faulting along the northern Rio Grande rift trend; (4) the thermal and uplift history of the range as revealed by apatite fission track analysis; (5) the Proterozoic basement of the range, including the significance of northeast-trending shear zones; and (6) the geologic setting of the Colorado mineral belt, formed during Laramide and mid-Tertiary igneous activity.

  13. Andean Uplift in the Context of Global Climate Change

    Science.gov (United States)

    Jeffery, Louise; Poulsen, Chris; Ehlers, Todd; Insel, Nadja

    2010-05-01

    The two primary causes of South American climate change over the last 40 million years are global climate change and the uplift of the Andes Mountains. Quantifying spatial and temporal variations in climate over the duration of Andean surface uplift is necessary for interpreting palaeoclimate, erosion and palaeoelevation records from the region. This study utilises an atmospheric general circulation model (GCM) to investigate the magnitude and relative importance of 1) global climate and 2) Andean surface uplift to South American climate during the last 40Ma. Combined with knowledge from the geologic record, the results constrain the controls on, and timing of, landscape development. Three different atmospheric CO2 levels (1, 2 and 4x pre-industrial levels - 280ppm) are used to simulate the range of global climate since the early Cenozoic. Surface uplift of the Andes is examined with simulations at three different Andean elevations (100%, 50% and 5% of modern heights). The importance of feedbacks associated with global climate change is assessed with additional simulations incorporating 1) no Antarctic Ice Sheet and 2) an equilibrium vegetation model coupled to the climate model. Initial results show that the elevation of the Andes exerts a much stronger control on South American precipitation than does the atmospheric CO2 level. The presence of the Andes leads to an increase in annual average precipitation rates of up to 8 mm/day at 20⁰S on the eastern flanks of the mountain range. An increase in CO2 levels from 1x to 4x pre-industrial levels increases the intensity of the global hydrological cycle with annual average precipitation rates increasing by up to 5mm/day. At 50% and 5% Andean elevation, precipitation patterns over South America are independent of atmospheric CO2 concentration. However, at 100% Andean elevation South American precipitation is sensitive to high (4x) CO2 levels. Most large-scale circulation patterns over South America are consistent

  14. Efecto de diferentes tamaños de claro experimental sobre el proceso de sucesión en un pastizal del embalse San Rafael (La Calera - Cundinamarca

    Directory of Open Access Journals (Sweden)

    Varela Pérez Martha Viviana

    2002-11-01

    Full Text Available RESUMENEn una comunidad de pastizal dominada por Anthoxanthum odoratum, Hypochaeris radicatayHolcus lanatus, se creó un disturbio de claros experimentales de diferentes tamaños, con el fin deencontrar los patrones de abundancias de especies y mecanismos que éstas utilizan en la su-cesión. Se cuantificaron las variables respuesta: riqueza, abundancias, coberturas, formasde vida, formas de crecimiento, formas de dispersión y se describieron las fases del ciclo de vidadurante 7 meses de muestreo en campo. La riqueza de especies en los claros, como fenómenoespacial, se describió por la relación especies-área utilizando la función de poder S = cAz , segúnla cual las poblaciones en los claros experimentales están controladas por las especiescolonizadoras En cuanto al efecto de los tamaños de claro sobre la diversidad de especies,resultó ser mayor en claros superiores a 1 m2, el análisis de los porcentajes de cobertura deespecies en los claros mostró dos tipos de interacciones entre especies: competencia ycoexistencias, dadas por diferentes rasgos de historia de vida y reflejadas por la presencia delos modelos: facilitación, tolerancia e inhibición descritos por Connell y Slatyer (1977; encuanto al patrón de regeneración de las especies en los claros, se observó la regeneración enmosaico descrita por Aubreville (1938 (Citado por: Connell y Slatyer, 1977, y respecto a lospatrones de abundancias de especies, se observaron tendencias hacia: convergencia, reemplazopseudocíclico y supresión total las cuales variaron según el tamaño de claro experimental ydescritas por Huston y Smith (1987.

  15. Correlacion clinica-patologica de corioamnionitis en pacientes que ingresan al servicio ginecologia en el año 2009 en el Hospital Universitario Clinica San Rafael

    OpenAIRE

    2011-01-01

    Este trabajo tuvo como utilidad básica determinar cuál es la correlación del diagnóstico clínico con los criterios de Gibss y con el Gold estándar que es la patología en las paciente con corioamnionitis para así poder establecer si el diagnostico se realizó en forma adecuada y cuáles son los criterios más relevantes para su diagnóstico. Dicha investigación se realizó de la siguiente manera: 1. Se Identificaron las pacientes que ingresaron al servicio de urgencias...

  16. Geologic application of thermal inertia imaging using HCMM data. [Walker Lane, Nevada; San Rafael, Utah; and Death Valley and Pisgah Crater, Lavic Lake Region, California

    Science.gov (United States)

    Kahle, A. B.; Schieldge, J. P.; Abrams, M. J.; Alley, R. E.; Levine, C. J. (Principal Investigator)

    1981-01-01

    Three test sites in the western US were selected to discriminate among surface geologic materials on the basis of their thermal properties as determined from HCMM data. Attempts to determine quantitatively accurate thermal inertia values from HCMM digital data met with only partial success due to the effects of sensor miscalibrations, radiative transfer in the atmosphere, and varying meteorology and elevation across a scene. In most instances, apparent thermal inertia was found to be an excellent qualitative representation of true thermal inertia. Computer processing of digital day and night HCMM data allowed construction of geologically useful images. At some test sites, more information was provided by data than LANDSAT data. Soil moisture effects and differences in spectrally dark materials were more effectively displayed using the thermal data.

  17. Estudio composicional de los sedimentos de la Gruta del Indio, Rincón del Atuel, departamento de San Rafael, Mendoza

    Directory of Open Access Journals (Sweden)

    R. Andreis

    2007-03-01

    Full Text Available En los sedimentos que constituyen el relleno de la gruta del Indio, Rincón del Atuel, se reconocieron tres niveles formados por acción fluvial intermitente y cuya distribución horizontal está parcialmente perturbada por la caída de bloques de basalto desde el techo. Los porcentajes y distribución de los componentes orgánicos, constituidos por humus, carbón, fitolitos y colofanita, es muy variable y está regulada por la actividad del hombre y de los animales. Los componentes detríticos son los más abundantes y generalmente superan el 90%, con amplio predominio de los constituyentes livianos. Los litoclastos volcánicos, los vitroclastos y las plagioclasas cálcicas son las variedades más abundantes, acompañadas por escaso cuarzo mono y policristalino, feldespatos potásicos, fragmentos carbonáticos y minerales pesados. De acuerdo a las características de los clastos se puede inferir un aporte sedimentario local, representado por clastos volcánicos provenientes de derrumbes y su mezcla con materiales similares derivados de la erosión de los depósitos subyacentes y otro alóctono fluvial, a los que se suma el aporte piroclástico. El conjunto de sedimentos analizados puede ser incluido en el grupo de las paratufitas. La baja madurez mineralógica de los sedimentos sugiere condiciones climáticas frias y secas. Sin embargo en los niveles superficiales, la presencia de agregados micríticos originados por precipitación in situ de aguas bicarbonatadas, indica condiciones esporádicas de humedad, las que son corroboradas, al igual que las bajas temperaturas, por la presencia de fragmentos quebrados de gutolitas.

  18. La Colección de documentos de interés demográfico de Rafael Puyol Antolín

    OpenAIRE

    Comín da Casa, Mar

    2016-01-01

    La colección donada a la Biblioteca Histórica Marqués de Valdecilla por el profesor D.Rafael Puyol Antolín contiene una serie de documentos de interés demográfico,censos,documentación catastral, cartillas de racionamiento, etc) fechados entre los años de 1800 y 1948. Una parte significativa de los documentos se refieren a la población de Patones (Madrid).

  19. The uplifting process of the Bogda Mountain during the Cenozoic and its tectonic implication

    Institute of Scientific and Technical Information of China (English)

    WANG ZongXiu; LI Tao; ZHANG Jin; LIU YongQing; MA ZongJin

    2008-01-01

    Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China The Tianshan Mountains have undergone its initial orogeny, extension adjusting and re-orogeny since the Late Paleozoic. The re-orogeny and uplifting process of the orogeny in the Mesozoic and Cenozoic are two of most important events in the geological evolution of Euro-Asian continent, which resulted in the formation of the present range-and-basin pattern in topography of the Tianshan Mountains and its adjacent areas. Thermochronology results by the method of fission-track dating of apatite suggest three obvious uplifting stages of the Bogad Mountain Chain re-orogeny during the Cenozoic, i.e. 5.6-19 Ma, 20-30 Ma, and 42-47 Ma. The strongest uplifting stage of the mountain is the second one at 20-30 Ma, when the mountain uplifted as a whole, and the beginning of re-orogeny was no less than 65Ma. Furthermore, our studies also show that the uplifting types of the mountain are variable in the different time periods, including uplifting of mountain as a whole and differential uplifting. The apparently diversified uplifting processes of the mountain chain are characterized by the migration (or transformation) of the uplifting direction of the mountain from west to east and from north to south, and the main process of mountain extending is from north to south.

  20. Fission track evidence for the Mesozoic-Cenozoic tectonic uplift of Mt. Bogda, Xinjiang, Northwest China

    Institute of Scientific and Technical Information of China (English)

    SHEN Chuanbo; MEI Lianfu; PENG Lei; ZHANG Shiwan; LIU Lin; TANG Jiguang

    2006-01-01

    Fission-track dating evidence from 5apatite samples and 4 zircon samples, and modeled time-temperature thermal history indicate that since Late Jurassic-Cretaceous (150 -106 Ma), the uplift process of Mt. Bogda can be divided into four stages of thermal evolution: 150 - 106, 75 -65, 44 -24and 13 -9 Ma. Before 44- 24 Ma, the cooling rate and uplifting rate of the southern and northern segments of Mt. Bogda are almost the same, showing that the uplifting of Mt. Bogda is an overall process.Since 44 - 24 Ma, the uplifting of the southern and northern segments of Mt. Bogda has shown differences. During 42 - 11 Ma, the northern segment of Mt. Bogda was at a steady stage, with the cooling rate being 0.03℃/Ma and the uplifting rate being 0. 001 mm/a. From 11 Ma to the present, the northern segment of Mt. Bogda was at a rapid cooling and uplifting stage, with the cooling rate being 5.72℃/Ma and the uplifting rate being 0.19 mm/a. However, the southern segment of Mt. Bogda has been at a rapid cooling and uplifting stage since 26 Ma, with the cooling rate being 1.24℃/Ma and the uplifting rate being 0.041 mm/a during 26 -9 Ma; 4.88℃/Ma and 0. 163 mm/a from 9 Ma till now.

  1. Basic Types and Structural Characteristics of Uplifts: An Overview of Sedimentary Basins in China

    Institute of Scientific and Technical Information of China (English)

    HE Dengfa; LI Desheng; WU Xiaozhi; WEN Zhu

    2009-01-01

    The uplift is a positive structural unit of the crust. It is an important window for continental dynamics owing to its abundant structural phenomena, such as fault, fold, unconformity and denudation of strata. Meanwhile, it is the very place to store important minerals like oil, natural gas, coal and uranium. Giant and large-scale oil and gas fields in China, such as the Daqing Oilfield, Lunnan-Tahe Oilfield, Penglai 19-3 Oilfield, Puguang Gas Field and Jingbian Gas Field, are developed mainly on uplifts. Therefore, it is the main target both for oil and gas exploration and for geological study. The uplift can be either a basement uplift, or one developed only in the sedimentary cover. Extension, compression and wrench or their combined forces may give rise to uplifts. The development process of uplifting, such as formation, development, dwindling and destruction, can be taken as the uplifting cycle. The uplifts on the giant Precambrian cratons are large in scale with less extensive structural deformation. The uplifts on the medium- and small-sized cratons or neo-cratons are formed in various shapes with strong structural deformation and complicated geological structure. Owing to changes in the geodynamic environment, uplift experiences a multi-stage or multi-cycle development process. Its geological structure is characterized in superposition of multi-structural layers. Based on the basement properties, mechanical stratigraphy and development sequence, uplifts can be divided into three basic types--the succession, superposition and destruction ones. The succession type is subdivided into the maintaining type and the lasting type. The superposition type can he subdivided into the composite anticlinal type, the buried-hill draped type, the faulted uplift type and the migration type according to the different scales and superimposed styles of uplifts in different cycles. The destruction type is subdivided into the tilting type and the negative inverted type. The

  2. Recycling an uplifted early foreland basin fill: An example from the Jaca basin (Southern Pyrenees, Spain)

    Science.gov (United States)

    Roigé, M.; Gómez-Gras, D.; Remacha, E.; Boya, S.; Viaplana-Muzas, M.; Teixell, A.

    2017-10-01

    In the northern Jaca basin (Southern Pyrenees), the replacement of deep-marine by terrestrial environments during the Eocene records a main drainage reorganization in the active Pyrenean pro-wedge, which leads to recycling of earlier foreland basin sediments. The onset of late Eocene-Oligocene terrestrial sedimentation is represented by four main alluvial fans: Santa Orosia, Canciás, Peña Oroel and San Juan de la Peña, which appear diachronously from east to west. These alluvial fans are the youngest preserved sediments deposited in the basin. We provide new data on sediment composition and sources for the late Eocene-Oligocene alluvial fans and precursor deltas of the Jaca basin. Sandstone petrography allows identification of the interplay of axially-fed sediments from the east with transversely-fed sediments from the north. Compositional data for the alluvial fans reflects a dominating proportion of recycled rock fragments derived from the erosion of a lower to middle Eocene flysch depocentre (the Hecho Group), located immediately to the north. In addition, pebble composition allows identification of a source in the North Pyrenean Zone that provided lithologies from the Cretaceous carbonate flysch, Jurassic dolostones and Triassic dolerites. Thus we infer this zone as part of the source area, located in the headwaters, which would have been unroofed from turbidite deposits during the late Eocene-Oligocene. These conclusions provide new insights on the response of drainage networks to uplift and topographic growth of the Pyrenees, where the water divide migrated southwards to its present day location.

  3. Could lithospheric instability cause the San Andreas Fault to creep ?

    Science.gov (United States)

    Le Pourhiet, L.; Saleeby, J.

    2013-12-01

    The Southern Sierra Nevada mountains range rapidly uplifted at ≈ 3.5 Ma simultaneously with a pulse of basaltic volcanism. Xenoliths recovered from volcanics indicate that the range lost a dense crustal root after the Miocene. The vertical motions and removal of the root have been linked to a fast seismic velocity anomaly that extends ≈ 200 km into the mantle but is offset to the west of the range. With visco-elasto-plastic thermo-mechanical numerical models, we have tested the influence of crustal strength on the kinematics of removal and on the amount of associated uplift. We find that delamination of the dense root is the most likely mechanism for gravitational instability to occur. In this class of models, the Great Valley deforms by elastic flexure in response to the load exerted by the delaminated root. We therefore explore the influence of the strength of the Great Valley on the wavelength of the flexure and complement 2D models by flexural 3D models. The study shows that for a Te=10 km, the flexural anomaly resulting from the drip pull outlines the limit between the area where the Quaternary sediments are found on-lapping or off-lapping the western flank of the Sierra. On the Western edge of the Sierra Nevada micro plate, the flexural anomaly crosses the San Andreas Fault. Where uplift is predicted Miocene strata are eroding, and where subsidence is predicted Quaternary sediments are at the surface. These geological limits also coincide with the limit of the creeping segment of the Fault. Geological evidence (especially fold kinematics) suggests that the extreme weakness of the San Andreas Fault in that area started during the Pliocene (~3 Ma). This timing also coincides with the rapid uplift of the Sierra Nevada. Simple coincidences or real mechanical link between these two anomalous behaviors? We will present and discuss how flexure could promote lithostatic fluid pressure in the depth range of 7 to 15 km along the creeping segment of the fault, and

  4. California State Waters Map Series: offshore of San Gregorio, California

    Science.gov (United States)

    Cochrane, Guy R.; Dartnell, Peter; Greene, H. Gary; Watt, Janet T.; Golden, Nadine E.; Endris, Charles A.; Phillips, Eleyne L.; Hartwell, Stephen R.; Johnson, Samuel Y.; Kvitek, Rikk G.; Erdey, Mercedes D.; Bretz, Carrie K.; Manson, Michael W.; Sliter, Ray W.; Ross, Stephanie L.; Dieter, Bryan E.; Chin, John L.; Cochran, Susan A.; Cochrane, Guy R.; Cochran, Susan A.

    2014-01-01

    In 2007, the California Ocean Protection Council initiated the California Seafloor Mapping Program (CSMP), designed to create a comprehensive seafloor map of high-resolution bathymetry, marine benthic habitats, and geology within the 3-nautical-mile limit of California's State Waters. The CSMP approach is to create highly detailed seafloor maps through collection, integration, interpretation, and visualization of swath sonar data, acoustic backscatter, seafloor video, seafloor photography, high-resolution seismic-reflection profiles, and bottom-sediment sampling data. The map products display seafloor morphology and character, identify potential marine benthic habitats, and illustrate both the surficial seafloor geology and shallow (to about 100 m) subsurface geology. The Offshore of San Gregorio map area is located in northern California, on the Pacific coast of the San Francisco Peninsula about 50 kilometers south of the Golden Gate. The map area lies offshore of the Santa Cruz Mountains, part of the northwest-trending Coast Ranges that run roughly parallel to the San Andreas Fault Zone. The Santa Cruz Mountains lie between the San Andreas Fault Zone and the San Gregorio Fault system. The nearest significant onshore cultural centers in the map area are San Gregorio and Pescadero, both unincorporated communities with populations well under 1,000. Both communities are situated inland of state beaches that share their names. No harbor facilities are within the Offshore of San Gregorio map area. The hilly coastal area is virtually undeveloped grazing land for sheep and cattle. The coastal geomorphology is controlled by late Pleistocene and Holocene slip in the San Gregorio Fault system. A westward bend in the San Andreas Fault Zone, southeast of the map area, coupled with right-lateral movement along the San Gregorio Fault system have caused regional folding and uplift. The coastal area consists of high coastal bluffs and vertical sea cliffs. Coastal promontories in

  5. 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.

  6. No Moho uplift below the Baikal Rift Zone

    DEFF Research Database (Denmark)

    Nielsen, Christoffer; Thybo, Hans

    2009-01-01

    The late Cenozoic Baikal Rift Zone (BRZ) in southern Siberia is composed of several individual topographic depressions and half grabens with the deep Lake Baikal at its center. We have modeled the seismic velocity structure of the crust and uppermost mantle along a 360 km long profile of the Baikal...... Explosion Seismic Transects (BEST) project across the rift zone in the southern part of Lake Baikal. The seismic velocity structure along the profile is determined by tomographic inversion of first arrival times and 2-D ray tracing of first arrivals and reflections. The velocity model shows a gently...... deepening Moho from the Siberian Platform (41 km depth) into the Sayan-Baikal Fold Belt (46 km depth). We can exclude the presence of any Moho uplift around the ~10 km deep sedimentary graben structure of southern Lake Baikal. The lower crust includes a distinct 50-80 km wide high-velocity anomaly (7...

  7. Finite temperature behaviour of the ISS-uplifted KKLT model

    Energy Technology Data Exchange (ETDEWEB)

    Papineau, C.

    2008-02-15

    We study the static phase structure of the ISS-KKLT model for moduli stabilisation and uplifting to a zero cosmological constant. Since the supersymmetry breaking sector and the moduli sector are only gravitationally coupled, we expect negligible quantum effects of the modulus upon the ISS sector, and the other way around. Under this assumption, we show that the ISS fields end up in the metastable vacua. The reason is not only that it is thermally favoured (second order phase transition) compared to the phase transition towards the supersymmetric vacua, but rather that the metastable vacua form before the supersymmetric ones. This nice feature is exclusively due to the presence of the KKLT sector. We also show that supergravity effects are negligible around the origin of the field space. Finally, we turn to the modulus sector and show that there is no destabilisation effect coming from the ISS sector. (orig.)

  8. Tectonic Setting and Characteristics of Natural Fractures in MesaVerde and Dakota Reservoirs of the San Juan Basin

    Energy Technology Data Exchange (ETDEWEB)

    LORENZ,JOHN C.; COOPER,SCOTT P.

    2000-12-20

    The Cretaceous strata that fill the San Juan Basin of northwestern New Mexico and southwestern Colorado were shortened in a generally N-S to NN13-SSW direction during the Laramide orogeny. This shortening was the result of compression of the strata between southward indentation of the San Juan Uplift at the north edge of the basin and northward to northeastward indentation of the Zuni Uplift from the south. Right-lateral strike-slip motion was concentrated at the eastern and western basin margins of the basin to form the Hogback Monocline and the Nacimiento Uplift at the same time, and small amounts of shear may have been pervasive within the basin as well. Vertical extension fractures, striking N-S to NNE-SSW with local variations (parallel to the Laramide maximum horizontal compressive stress), formed in both Mesaverde and Dakota sandstones under this system, and are found in outcrops and in the subsurface of the San Juan Basin. The immature Mesaverde sandstones typically contain relatively long, irregular, vertical extension fractures, whereas the quartzitic Dakota sandstones contain more numerous, shorter, sub-parallel, closely spaced, extension fractures. Conjugate shear planes in several orientations are also present locally in the Dakota strata.

  9. Mountain uplift and the threshold for sustained Northern Hemisphere Glaciation

    Directory of Open Access Journals (Sweden)

    G. L. Foster

    2009-11-01

    Full Text Available The Miocene (~24 to ~5 million years ago was a period of relative global warmth (e.g. Zachos et al. 2001 characterised by the glaciation of Antarctica only. Paradoxically, the majority of available proxy data suggest that during the Miocene pCO2 was similar, or even lower, than the pre-industrial levels (280 ppmv; Pagani et al., 1999; Pearson and Palmer, 2000; Kürschner et al., 1996, 2008 and at times probably crossed the modelled threshold value required for sustained glaciation in the Northern Hemisphere (DeConto et al., 2008. Records of ice rafted debris and the oxygen isotope composition of benthic foraminifera suggest that at several times over the last 25 million years substantial amounts of continental ice did build up in the Northern Hemisphere but none of these led to sustained glaciation. In this contribution we review evidence that suggests that in the Miocene the North American Cordillera was, at least in parts, considerably lower than today. We present new GCM simulations that imply that Late Miocene uplift of the North American Cordillera would have resulted in significant cooling of Northern North American Continent. Offline ice sheet modelling, driven by these GCM outputs, suggests that with a reduced topography inception of the Cordilleran ice sheet is prohibited, and there is a small, but potentially significant, reduction in the amount of ice grown on Baffin Island. This suggests uplift of the North American Cordillera in the Late Miocene may have played an important role in priming the climate for the intensification of Northern Hemisphere glaciation in the Late Pliocene.

  10. Can footwall unloading explain late Cenozoic uplift of the Sierra Nevada crest?

    Science.gov (United States)

    Thompson, G.A.; Parsons, T.

    2009-01-01

    Globally, normal-fault displacement bends and warps rift flanks upwards, as adjoining basins drop downwards. Perhaps the most evident manifestations are the flanks of the East African Rift, which cuts across the otherwise minimally deformed continent. Flank uplift was explained by Vening Meinesz (1950, Institut Royal Colonial Belge, Bulletin des Seances, v. 21, p. 539-552), who recognized that isostasy should cause uplift of a normal-faulted footwall and subsidence of its hanging wall. Uplift occurs because slip on a dipping normal fault creates a broader root of less-dense material beneath the footwall, and a narrowed one beneath the hanging wall. In this paper, we investigate the potential influence of this process on the latest stages of Sierra Nevada uplift. Through theoretical calculations and 3D finite element modelling, we find that cumulative slip of about 4km on range-front faults would have produced about 1.3km peak isostatic uplift at the ridge crest. Numerical models suggest that the zone of uplift is narrow, with the width controlled by bending resistance of the seismogenic crust. We conclude that footwall unloading cannot account for the entire elevation of the Sierran crest above sea level, but if range-front faulting initiated in an already elevated plateau like the adjacent Basin and Range Province, then a hybrid model of pre-existing regional uplift and localized footwall unloading can account for the older and newer uplift phases suggested by the geologic record.

  11. Episodic swell growth inferred from variable uplift of the Cape Verde hotspot islands

    Science.gov (United States)

    Ramalho, R.; Helffrich, G.; Cosca, M.; Vance, D.; Hoffmann, D.; Schmidt, D.N.

    2010-01-01

    On the Beagle voyage, Charles Darwin first noted the creation and subsidence of ocean islands, establishing in geology's infancy that island freeboard changes with time. Hotspot ocean islands have an obvious mechanism for freeboard change through the growth of the bathymetric anomaly, or swell, on which the islands rest. Models for swell development indicate that flexural, thermal or dynamic pressure contributions, as well as spreading of melt residue from the hotspot, can all contribute to island uplift. Here we test various models for swell development using the uplift histories for the islands of the Cape Verde hotspot, derived from isotopic dating of marine terraces and subaerial to submarine lava-flow morphologies. The island uplift histories, in conjunction with inter-island spacing, uplift rate and timing differences, rule out flexural, thermal or dynamic pressure contributions. We also find that uplift cannot be reconciled with models that advocate the spreading of melt residue in swell development unless swell growth is episodic. Instead, we infer from the uplift histories that two processes have acted to raise the islands during the past 6 Myr. During an initial phase, mantle processes acted to build the swell. Subsequently, magmatic intrusions at the island edifice caused 350 m of local uplift at the scale of individual islands. Finally, swell-wide uplift contributed a further 100 m of surface rise.

  12. GPS Imaging of vertical land motion in California and Nevada: Implications for Sierra Nevada uplift

    Science.gov (United States)

    Hammond, William C.; Blewitt, Geoffrey; Kreemer, Corné

    2016-10-01

    We introduce Global Positioning System (GPS) Imaging, a new technique for robust estimation of the vertical velocity field of the Earth's surface, and apply it to the Sierra Nevada Mountain range in the western United States. Starting with vertical position time series from Global Positioning System (GPS) stations, we first estimate vertical velocities using the MIDAS robust trend estimator, which is insensitive to undocumented steps, outliers, seasonality, and heteroscedasticity. Using the Delaunay triangulation of station locations, we then apply a weighted median spatial filter to remove velocity outliers and enhance signals common to multiple stations. Finally, we interpolate the data using weighted median estimation on a grid. The resulting velocity field is temporally and spatially robust and edges in the field remain sharp. Results from data spanning 5-20 years show that the Sierra Nevada is the most rapid and extensive uplift feature in the western United States, rising up to 2 mm/yr along most of the range. The uplift is juxtaposed against domains of subsidence attributable to groundwater withdrawal in California's Central Valley. The uplift boundary is consistently stationary, although uplift is faster over the 2011-2016 period of drought. Uplift patterns are consistent with groundwater extraction and concomitant elastic bedrock uplift, plus slower background tectonic uplift. A discontinuity in the velocity field across the southeastern edge of the Sierra Nevada reveals a contrast in lithospheric strength, suggesting a relationship between late Cenozoic uplift of the southern Sierra Nevada and evolution of the southern Walker Lane.

  13. Elastic uplift in southeast Greenland due to rapid ice mass loss

    DEFF Research Database (Denmark)

    Khan, Shfaqat Abbas; Van dam, Tonie; Hamilton, Gordon S.

    2007-01-01

    , calculated from sequential digital elevation models, contributes about 16 mm of the observed uplift, with an additional 5 mm from volume loss of Kangerdlugssuaq Glacier. The remaining uplift signal is attributed to significant melt-induced ice volume loss from the ice sheet margin along the southeast coast...

  14. The Prediction Model of Dam Uplift Pressure Based on Random Forest

    Science.gov (United States)

    Li, Xing; Su, Huaizhi; Hu, Jiang

    2017-09-01

    The prediction of the dam uplift pressure is of great significance in the dam safety monitoring. Based on the comprehensive consideration of various factors, 18 parameters are selected as the main factors affecting the prediction of uplift pressure, use the actual monitoring data of uplift pressure as the evaluation factors for the prediction model, based on the random forest algorithm and support vector machine to build the dam uplift pressure prediction model to predict the uplift pressure of the dam, and the predict performance of the two models were compared and analyzed. At the same time, based on the established random forest prediction model, the significance of each factor is analyzed, and the importance of each factor of the prediction model is calculated by the importance function. Results showed that: (1) RF prediction model can quickly and accurately predict the uplift pressure value according to the influence factors, the average prediction accuracy is above 96%, compared with the support vector machine (SVM) model, random forest model has better robustness, better prediction precision and faster convergence speed, and the random forest model is more robust to missing data and unbalanced data. (2) The effect of water level on uplift pressure is the largest, and the influence of rainfall on the uplift pressure is the smallest compared with other factors.

  15. Ratings uplifts and bank characteristics in the Eurozone 2002-2011

    NARCIS (Netherlands)

    Dijkstra, M.A.

    2013-01-01

    This paper explores which characteristics define banks that are too-big-to-fail in the Eurozone over the period 2002-2011. These banks are identified through ratings uplift data from Moody’s. Higher ratings uplifts are associated with higher degrees of interest income and lower degrees of commission

  16. El Quinquenio de Rafael Reyes y la transformación del mapa político-administrativo colombiano

    Directory of Open Access Journals (Sweden)

    Carlos Andrés Quinche Castaño

    2011-01-01

    Full Text Available Tras la expedición de la Constitución de 1886, la división políticoadministrativa del territorio colombiano permaneció invariable durante 18 años, hasta la creación del Departamento de Nariño, de acuerdo con los parámetros establecidos en la ley. Sin embargo, durante el primer año del gobierno de Rafael Reyes en 1905, fueron instituidos seis nuevos departamentos, para luego, ya en 1908, subdividir el territorio nacional en 34 secciones. El movimiento contrarreformista que siguió a la administración de Reyes en 1909 restableció la división territorial existente antes del Quinquenio, pero ciertas resistencias locales permitieron que algunos de los nuevos departamentos creados recientemente lograran subsistir. El presente artículo constituye una revisión histórica de las transformaciones que sufrió el ordenamiento territorial colombiano durante el gobierno de Reyes, todo con el fin de dar cuenta del papel que cumple el Quinquenio en la definición del mapa político administrativo del país.

  17. EXPERIMENTAL STUDY ON TOTAL UPLIFT FORCES OF WAVES ON HORIZONTAL PLATES

    Institute of Scientific and Technical Information of China (English)

    ZHOU Yi-ren; CHEN Guo-ping; WANG Deng-ting

    2004-01-01

    The total uplift forces of waves acting on hori zontal plates are the important basis for the design of maritime hollow-trussed structures. In this paper, an experimental study on the total uplift forces of waves on horizontal plates was conducted by a series of model tests. The results show that the maximum total uplift forces do not necessarily occur with the maximum impact pressure intensity synchronously.On the basis of the test results, formation mechanism of the total uplift forces of waves as well as its influencing factors were analyzed in detail, and an equation for calculation of the maximum total uplift forces of waves on plates was put forward. Lots of test data shows the present equation is in good agreement with the test results.

  18. Geomorphology, denudation rates, and stream channel profiles reveal patterns of mountain building adjacent to the San Andreas fault in northern California, USA

    Science.gov (United States)

    DeLong, Stephen B.; Hilley, George E.; Prentice, Carol S.; Crosby, Christopher J.; Yokelson, Intan N.

    2017-01-01

    Relative horizontal motion along strike-slip faults can build mountains when motion is oblique to the trend of the strike-slip boundary. The resulting contraction and uplift pose off-fault seismic hazards, which are often difficult to detect because of the poor vertical resolution of satellite geodesy and difficulty of locating offset datable landforms in active mountain ranges. Sparse geomorphic markers, topographic analyses, and measurement of denudation allow us to map spatiotemporal patterns of uplift along the northern San Andreas fault. Between Jenner and Mendocino, California, emergent marine terraces found southwest of the San Andreas fault record late Pleistocene uplift rates between 0.20 and 0.45 mm yr–1 along much of the coast. However, on the northeast side of the San Andreas fault, a zone of rapid uplift (0.6–1.0 mm yr–1) exists adjacent to the San Andreas fault, but rates decay northeastward as the coast becomes more distant from the San Andreas fault. A newly dated 4.5 Ma shallow-marine deposit located at ∼500 m above sea level (masl) adjacent to the San Andreas fault is warped down to just 150 masl 15 km northeast of the San Andreas fault, and it is exposed at just 60–110 masl to the west of the fault. Landscape denudation rates calculated from abundance of cosmogenic radionuclides in fluvial sediment northeast of, and adjacent to, the San Andreas fault are 0.16–0.29 mm yr–1, but they are only 0.03–0.07 mm yr–1 west of the fault. Basin-average channel steepness and the denudation rates can be used to infer the erosive properties of the underlying bedrock. Calibrated erosion rates can then be estimated across the entire landscape using the spatial distribution of channel steepness with these erosive properties. The lower-elevation areas of this landscape that show high channel steepness (and hence calibrated erosion rate) are distinct from higher-elevation areas with systematically lower channel steepness and denudation rates

  19. 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...

  20. Ice cap melting and low‐viscosity crustal root explain the narrow geodetic uplift of the Western Alps

    National Research Council Canada - National Science Library

    Chéry, J; Genti, M; Vernant, P

    2016-01-01

    ...) the isostatic response to denudation responsible for only a fraction of the observed uplift and (2) the rebound induced by the Wurmian ice cap melting which predicts a broader uplifting region than the one evidenced by geodetic observations...

  1. Las novelas “utópicas” de Rafael Arévalo Martínez / Rafael Arévalo Martinez’s “utopian novels”

    Directory of Open Access Journals (Sweden)

    Emiliano Coello Gutiérrez

    2010-07-01

    Full Text Available RESUMEN: Este artículo analiza Viaje a Ipanda y El mundo de los maharachías, dos novelas que han sido poco estudiadas por la crítica arevaliana. En este artículo se insiste en la diferencia genérica entre novela utópica y novela de ciencia ficción. A esta última categoría pertenecen las dos novelas de Arévalo. El hecho de que este autor escribiera novelas de ciencia ficción en la Guatemala de los años 30, lo convierte en un pionero de las letras centroamericanas no solo a nivel estético, sino también a nivel ideológico.ABSTRACT: This article examines two novels by Rafael Arévalo Martínez entitled Viaje a Ipanda and El mundo de los maharachías. The aim of it is to shed new light on novels too often disregarded by criticism and show that unlike what is commonly held—that both of them are “utopian novels”—Viaje a Ipanda and El mundo de los maharachías must be understood as science fiction. Arévalo Martínezʼs choice to write science fiction novels in the Guatemala of the 30ʼs makes him a pioneer of Central American literature, not only on an aesthetic level but also on an ideological one.

  2. Una visión comunicacional de la política en Ecuador: Rafael Correa y su bicicleta (A vision of communication politics in Ecuador: Rafael Correa and your bicycle

    Directory of Open Access Journals (Sweden)

    María Isabel Punín Larrea

    2014-12-01

    Full Text Available Este artículo analiza el video oficial de la campaña del Presidente Correa denominado “spot bicicleta”, elemento promocional usado en las elecciones seccionales del 2013, toma como referencia de análisis las estructuras fonológicas, gráficas, sintácticas y semánticas. La pieza con una duración de 3:30 minutos, recuerda el proceso de “Revolución Ciudadana”, emprendido por el partido Alianza País (35; y resalta la condición de servicio del Presidente, cuyo eje principal es la Patria. El discurso gira entorno a la pobreza, la esperanza y el deseo del Presidente de continuar en el poder. Toda la pieza audiovisual está matizada con elementos posicionados en la mente de los ecuatorianos, usados como una estrategia de persuasión. | This article analyzes the official “bicicleta” publicity video for President Rafael Correa’s campaign in the Sectional Elections in 2013 by examining its phonological, graphical, syntactic and semantic structures. The video, which runs for three minutes and 30 seconds, recalls the development of the “Citizens’ Revolution” by the Alianza País political party (35; it highlights the President’s service to the country, and its core idea is the Homeland. The discourse talks of poverty, hope and the desire of the President to remain in power. The audiovisual content contains elements designed to strike a chord in Ecuadorians, and the strategy is clearly one of persuasion.

  3. Geophysical evidence for Quaternary deformation within the offshore San Andreas Fault System, Point Reyes Peninsula, California

    Science.gov (United States)

    Stozek, B.

    2010-12-01

    Our previous work studying the rate and style of uplift of marine terraces on the Point Reyes Peninsula indicates the peninsula has been undergoing differential uplift due to interacting fault geometries in the offshore zone. To better understand offshore fault interactions, recently collected mini-sparker seismic reflection data acquired by the USGS and multi-beam bathymetric data acquired by California State University at Monterey Bay within the 3-mile (5 km) limit offshore of the Point Reyes Peninsula, are being used to reinterpret the tectono-stratigraphic framework of the San Andreas fault (SAF) system. Eight offshore Shell exploratory well logs that provide seismic velocity and paleontologic data are being used in conjunction with industry multichannel (deep-penetration) seismic reflection profiles to provide age control and extend the analyses beyond 3 mile limit of the high-resolution data. Isopach and structure maps of key stratigraphic intervals were generated to show how the stratigraphic units are influenced by fault interactions. These datasets allow for new interpretations of the offshore Neogene stratigraphy and the evolution of the Point Reyes fault, an offshore component of the SAF system. Observations of Quaternary sedimentary sequences in the high-resolution mini-sparker dataset provide evidence of localized areas of subsidence and uplift within the offshore SAF system. For example, the most recent angular unconformity above the Point Reyes fault deepens to the north where the fault bends from an east-west to a more northerly orientation. Stratigraphic horizons in the offshore zone are correlated with the same geologic units exposed on the Point Reyes Peninsula. Both unconformity-bounded sedimentary sequences mapped on reflection profiles in the offshore and marine terraces that have been uplifted on the peninsula are tied to sea-level fluctuations. Our new interpretation of the Point Reyes fault zone will be incorporated into a kinematic fault

  4. 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.

  5. Regional uplift associated with continental large igneous provinces: The roles of mantle plumes and the lithosphere

    Science.gov (United States)

    Saunders, A.D.; Jones, S.M.; Morgan, L.A.; Pierce, K.L.; Widdowson, M.; Xu, Y.G.

    2007-01-01

    The timing and duration of surface uplift associated with large igneous provinces provide important constraints on mantle convection processes. Here we review geological indicators of surface uplift associated with five continent-based magmatic provinces: Emeishan Traps (260??million years ago: Ma), Siberian Traps (251??Ma), Deccan Traps (65??Ma), North Atlantic (Phase 1, 61??Ma and Phase 2, 55??Ma), and Yellowstone (16??Ma to recent). All five magmatic provinces were associated with surface uplift. Surface uplift can be measured directly from sedimentary indicators of sea-level in the North Atlantic and from geomorpholocial indicators of relative uplift and tilting in Yellowstone. In the other provinces, surface uplift is inferred from the record of erosion. In the Deccan, North Atlantic and Emeishan provinces, transient uplift that results from variations in thermal structure of the lithosphere and underlying mantle can be distinguished from permanent uplift that results from the extraction and emplacement of magma. Transient surface uplift is more useful in constraining mantle convection since models of melt generation and emplacement are not required for its interpretation. Observations of the spatial and temporal relationships between surface uplift, rifting and magmatism are also important in constraining models of LIP formation. Onset of surface uplift preceded magmatism in all five of the provinces. Biostratigraphic constraints on timing of uplift and erosion are best for the North Atlantic and Emeishan Provinces, where the time interval between significant uplift and first magmatism is less than 1??million years and 2.5??million years respectively. Rifting post-dates the earliest magmatism in the case of the North Atlantic Phase 1 and possibly in the case of Siberia. The relative age of onset of offshore rifting is not well constrained for the Deccan and the importance of rifting in controlling magmatism is disputed in the Emeishan and Yellowstone

  6. Emergence and evolution of Santa Maria Island (Azores)—The conundrum of uplifted islands revisited

    Science.gov (United States)

    Ramalho, Ricardo; Helffrich, George; Madeira, Jose; Cosca, Michael A.; Thomas, Christine; Quartau, Rui; Hipolito, Ana; Rovere, Alessio; Hearty, Paul; Avila, Sergio

    2017-01-01

    The growth and decay of ocean-island volcanoes are intrinsically linked to vertical movements. While the causes for subsidence are better understood, uplift mechanisms remain enigmatic. Santa Maria Island in the Azores Archipelago is an ocean-island volcano resting on top of young lithosphere, barely 480 km away from the Mid-Atlantic Ridge. Like most other Azorean islands, Santa Maria should be experiencing subsidence. Yet, several features indicate an uplift trend instead. In this paper, we reconstruct the evolutionary history of Santa Maria with respect to the timing and magnitude of its vertical movements, using detailed field work and 40Ar/39Ar geochronology. Our investigations revealed a complex evolutionary history spanning ∼6 m.y., with subsidence up to ca. 3.5 Ma followed by uplift extending to the present day. The fact that an island located in young lithosphere experienced a pronounced uplift trend is remarkable and raises important questions concerning possible uplift mechanisms. Localized uplift in response to the tectonic regime affecting the southeastern tip of the Azores Plateau is unlikely, since the area is under transtension. Our analysis shows that the only viable mechanism able to explain the uplift is crustal thickening by basal intrusions, suggesting that intrusive processes play a significant role even on islands standing on young lithosphere, such as in the Azores.

  7. Regional cenozoic uplift and subsidence events in the southeastern North Sea

    Energy Technology Data Exchange (ETDEWEB)

    Jordt, H.

    1995-12-31

    The Paleocene topography of the Fennoscandian Shield is indicated by outbuilding towards the Central Trough and the Ringkoebing-Fyn High. From Eocene until Pliocene time three events of relative vertical movements are indicated by changes in outbuilding directions and reflection termination patterns in the central North Sea. The firs event of uplift was in the Eocene and resulted in relative uplift of the Mid North Sea High and contemporary subsidence east of it, indicated by a change in outbuilding from north to west. A second event of uplift is indicated to the north of the study area at the Eocene-Oligocene boundary by renewed southward outbuilding in the Norwegian-Danish Basin. In Miocene until Early Pliocene time a relatively stationary, almost east-west striking, basin margin was probably located to the north along the Tornquist Zone as indicated by the continued outbuilding towards the Ringkoebing-Fyn High. A third event of relative uplift is indicated east of the study area by changes in the Pliocene outbuilding pattern. After the first event of uplift it appears that the deepest parts of the Eocene North Sea Basin was located more easterly than the deepest part are today. Apparently the two latest uplift events north and east of the study area were related to movements of, or along the Tornquist Zone or to regional uplift of the Fennoscandian Shield finally resulting in the present-day configuration of the North Sea. (au) 11 refs.

  8. Do hassles and uplifts change with age? Longitudinal findings from the VA normative aging study.

    Science.gov (United States)

    Aldwin, Carolyn M; Jeong, Yu-Jin; Igarashi, Heidi; Spiro, Avron

    2014-03-01

    To examine emotion regulation in later life, we contrasted the modified hedonic treadmill theory with developmental theories, using hassles and uplifts to assess emotion regulation in context. The sample was 1,315 men from the VA Normative Aging Study aged 53 to 85 years, who completed 3,894 observations between 1989 and 2004. We computed 3 scores for both hassles and uplifts: intensity (ratings reflecting appraisal processes), exposure (count), and summary (total) scores. Growth curves over age showed marked differences in trajectory patterns for intensity and exposure scores. Although exposure to hassles and uplifts decreased in later life, intensity scores increased. Group-based modeling showed individual differences in patterns of hassles and uplifts intensity and exposure, with relative stability in uplifts intensity, normative nonlinear changes in hassles intensity, and complex patterns of individual differences in exposure for both hassles and uplifts. Analyses with the summary scores showed that emotion regulation in later life is a function of both developmental change and contextual exposure, with different patterns emerging for hassles and uplifts. Thus, support was found for both hedonic treadmill and developmental change theories, reflecting different aspects of emotion regulation in late life.

  9. The uplift history of the Arabian Plateau as inferred from geomorphologic analysis of its northwestern edge

    Science.gov (United States)

    Bar, Oded; Zilberman, Ezra; Feinstein, Shimon; Calvo, Ran; Gvirtzman, Zohar

    2016-03-01

    The Arabian Plateau (AP) is an Oligocene sub-horizontal regional planation surface, extending throughout the western half of the Arabian Peninsula. Its present elevation of about 1 km required a prominent uplift since the Late Eocene. In order to reconstruct the uplift history, we documented abundant abrasive and fluvial terraces that were left along and across the raised Judea Mountains (JM), which comprised the NW edge of the AP. Using the ages of those terraces and the differences in height between them, we found that the JM was uplifted in three major phases: a few hundred meters during the Late Eocene-Early Oligocene, ~ 500 m during the Early Miocene-early Middle Miocene, and ~ 350 m during the Late Pliocene. The two earliest uplift phases predate the formation of the Dead-Sea Transform (DST), which today separates the JM from the AP, meaning that these two phases affected the continuous rigid lithosphere extending southeastwards to the AP interiors. Moreover, restoration of the paleogeography predating the lateral offset along the DST eliminates the main height differences across it and suggests that the DST does not play a major role in the vertical position of its bordering plates, but rather forms a relatively narrow deformation strip within the AP. Those two early phases of uplift can be corroborated by previous thermochronology studies, which exhibit similar ages around the Red Sea but may reflect the uplift age of the entire region. The present sub-horizontal morphology of the AP is in contrast to the presumed original northeastward drainage and may suggest a subsequent long-wave moderate tilting to the SW. Three possible mechanisms were suggested for the uplift of the AP: a long wavelength flexure of the Arabian plate during early stages of the uplift, and lithospheric thinning or dynamic topography during later stages of the uplift.

  10. Daily hassles and uplifts: a diary study on understanding relationship quality.

    Science.gov (United States)

    Totenhagen, Casey J; Serido, Joyce; Curran, Melissa A; Butler, Emily A

    2012-10-01

    In this investigation, we use the Conservation of Resources (CoR) theory as a guide to examine how both uplifts and hassles are associated with positive (e.g., satisfaction, commitment) and negative (ambivalence, conflict) relational quality on a daily basis. In previous studies of hassles and uplifts, the focus has been primarily on negative outcomes at the individual level (e.g., affect). Here, we build on this previous research in examining both positive and negative events (i.e., uplifts and hassles) in associations with positive and negative relational qualities. Further, we focus on examining social and nonsocial events that are external to the relationship (i.e., do not involve the romantic partner) and how they are linked with relational qualities. Finally, we examine which patterns are confined to the same day and which carry over to subsequent days (i.e., lagged effects). Contrary to previous literature, we find that both social and nonsocial hassles are largely unrelated to relationship quality after accounting for the effects of social and nonsocial uplifts. In contrast, nonsocial uplifts bolster positive feelings about the relationship on that day. Results also show that hassles and uplifts may work together to explain relational commitment. Finally, we find that nonsocial uplifts experienced on one day are associated with trend-level declines in next day positive feelings about the relationship. Our findings suggest that preserving relationship quality through daily experiences is best achieved by equipping couples to recognize the benefits of uplifts to the relationship, especially uplifts that are nonsocial, in tandem with managing hassles.

  11. JUAN RAFAEL ALLENDE, "EL PEQUÉN", Y LOS RASGOS CARNAVALESCOS DE LA LITERATURA POPULAR CHILENA DEL SIGLO XIX

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    MAXIMILIANO SALINAS CAMPOS

    2004-06-01

    Full Text Available Dentro de la rica y poco estudiada tradición de la literatura popular de Chile se destaca en el siglo XIX la figura del poeta y dramaturgo Juan Rafael Allende Astorga (1848-1909. En este estudio se hace una presentación del carácter carnavalesco de su obra literaria durante la década de 1880, expresada en los popularísimos volúmenes de poesía firmados como El Pequén y en su periódico de caricaturas El Padre Padilla. A contrapelo del estiramiento y britanización burguesa que caracterizó a su tiempo, Allende asoció su espíritu festivo a las luchas democráticas, y en particular al nacimiento del Partido Democrático, una nueva forma de hacer política de cara a las necesidades concretas y materiales de los trabajadores y "rotos" chilenos, a partir de 1887. El espíritu de la élite era para Allende el de una forzada e hipócrita cuaresma impuesta al pueblo común. La forma de combatir ese mundo era la aparición del Carnaval, como una exaltación de sus valores a través del banquete, el erotismo, la fiesta y la subversión. Este espíritu recorre gran parte del discurso literario de Allende, incluso permitiendo comprender, desde su mirada de un "mundo al revés", la conducta pública del Presidente José Manuel Balmaceda ante la élite de Chile.In the rich but little researched tradition of the popular literature of Chile, the figure of the poet and playwright Juan Rafael Allende Astorga (1848-1909 brigthly shines in the XIX century. In this paper, a presentation of a festive nature of his literary production during the 1880's is made; it is expressed in the very popular volumes of poetry under the nickname of "El Pequén" (a local kind of hawk and in his newspaper of cartoons "El Padre Padilla". Against the grain of the stiffness and anglicism of the bourgeoisie that characterized his epoch, Allende associated his festive spirit to the democrative struggles, and in particular to the birth of the Democratic Party, a new approach to

  12. [Superficial mycoses: casuistry of the Mycology Department of the Instituto Nacional de Higiene "Rafael Rangel", Caracas, Venezuela (2001-2014)].

    Science.gov (United States)

    Capote, Ana María; Ferrara, Giuseppe; Panizo, María Mercedes; García, Nataly; Alarcón, Víctor; Reviakina, Vera; Dolande, Maribel

    2016-03-01

    The superficial mycoses are very common infectious diseases and therefore are a frequent reason for medical consultation. The aim of this study was to determine the diagnostic frequency of superficial mycoses in the Mycology Department of the Instituto Nacional de Higiene "Rafael Rangel" during 14 years (2001-2014). A retrospective cross-sectional study was performed to review the mycological records of patients with presumptive diagnosis of superficial mycosis. Nails, hairs and epidermal scales were the processed samples. The identification of fungi was performed by macro and microscopic observation of colonies and biochemical and physiological tests, as required of the isolated agent. For the investigation of Malassezia spp. only direct examination was performed. Of the 3 228 samples processed, 1 098 (34%) were positive and their distribution according to the etiological agent was: dermatophytes 79.5%; 10.9% yeasts; non-dermatophytes fungi 5.1% and 4.5% Malassezia spp. The most frequently isolated dermatophyte was Trichophyton rubrum Complex (70.1%), followed by T mentagrophytes complex (15.1%), Microsporum canis (9.4%) and Epidermophyton floccosum (4%). The most frequent ringworms Were: Tinea unguium (66.8%), followed by Tineapedis (16.4%) and Tinea capitis (8.1%). Candida parapsilosis complex (37.5%) was the most frequently isolated yeast and Fusarium spp. (53.6%) was the most isolated among non-dermatophyte fungi, followed by Aspergillus spp. (19.6%) and Acremonium spp. (10.7%). The identification of the etiological agent is essential to guide appropriate treatment. This study constitutes an important contribution to the knowledge of the epidemiology of superficial mycoses in our country.

  13. Centrifuge Testing and Seismic Response Analysis for Uplift Behavior of Spread Foundation Structures on Rock

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    Takuya Suzuki

    2016-09-01

    Full Text Available The uplift behavior of structures subjected to severe seismic motion has not been clarified. This paper presents experimental and analytical studies conducted for clarifying this problem of spread foundation structures on rock. First, centrifugal loading tests are conducted to determine the uplift behavior of these structures, and the uplift behavior of these structures is confirmed. Then, simulation analyses are performed using a three-dimensional FE model and the accuracy of these analyses is confirmed. A comparison between test and analyses results clarified the important analytical conditions required for maintaining analysis precision and the limit of analysis precision.

  14. Rafael pombo: la traduction et les échanges interculturels au xixème siècle en colombie

    OpenAIRE

    2008-01-01

    El poeta y traductor Rafael Pombo (1833-1912) constituye un ejemplo interesante para descubrir los intercambios que hicieron los intelectuales en Colombia en el siglo XIX. Esta época se caracterizó por la constitución de los Estado-Nación, por la búsqueda de modelos a imitar en todos los campos, y por un ambiente « intercultural » propicio para establecer contactos. Durante su estadía de diez y siete años en Estados Unidos Pombo desarrollo diversas actividades, y entró en contacto con poetas ...

  15. Notas sobre as “Prosas Portuguesas” de Rafael Bluteau e a historiografia lingüística do século XVIII

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    Maria Filomena Gonçalves

    2003-06-01

    Full Text Available Besides the "Vocabulario Portuguez e Latino" (1712-1728, Rafael Bluteau is also author of the "Prosas Portuguezas" (1727-1728, originated in the specific context of the literary academism of late 17th century and the early 18th century. In the "Prozas", the father of the Portuguese Lexicography debates subjects of linguistic nature such as lexical renewal, the foreign word and the meaning of certain words. Characterized by their eulogistic nature, the "Prosas" are both privileged sources of the linguistic historiography of Portuguese and important additions to the historic lexicology of the Portuguese Language.

  16. Embarazo en adolescentes del Policlínico “Rafael Valdés” en el año 2009

    OpenAIRE

    Melissa Serra Ruíz; Rosa María Alonso Uría; Miguel Serra Valdés; Viviana de la Caridad Sáez Cantero

    2011-01-01

    Fundamento: la situación del embarazo en la adolescencia es hoy una problemática de salud a nivel internacional, asociada a un incremento de la morbilidad materna. Objetivo: estimar la tasa de embarazo en adolescentes y caracterizar la morbilidad materna asociada. Método: estudio descriptivo y prospectivo, realizado en el Área de Salud del Policlínico “Rafael Valdés del Municipio Cotorro, durante el año 2009. La muestra estuvo constituida por 79 adolescentes gestantes, a las cuales se les sol...

  17. Nación y Modernidad en Rafael E. Moscote: aproximación a la obra ensayística de un liberal panameño

    OpenAIRE

    Pulido Ritter, Luis

    2015-01-01

    Cet essai aborde la figure d’un historien et pédagogue panaméen, Rafael Moscote (1906-2001), qui dans la construction de son savoir philosophique s’est abreuvé du pragmatisme nord-américain et du libéralisme. Ici nous affirmons que, à une époque caractérisée par les conflits idéologiques et politiques de la Guerre froide, Moscote a su articuler un équilibre entre des pôles contraires, non pas par opportunisme, mais en raison de sa conviction démocratique et intellectuelle selon laquelle la lu...

  18. La polifacética labor periodística de Rafael Altamira (1866-1951): un modelo paradigmático

    OpenAIRE

    Rubio Cremades, Enrique

    2013-01-01

    Tan sólo un exiguo número de escritores españoles, entre ellos Rafael Altamira, puede reunir un material noticioso periodístico tan rico en contenidos y matices. Una trayectoria en la historia del periodismo español polifacética, en consonancia con su poliédrica figura, acrecentada con el correr de los años y copiosa gracias a su longeva vida. El periodismo de Altamira discurre por múltiples caminos gracias a su labor profesional como historiador, jurista, pedagogo, pensador, crítico literari...

  19. Acalasia, experiencia de 6 años. Hospital "Dr. Rafael Ángel Calderón Guardia" (2001-2007)

    OpenAIRE

    Viviana Hernández-de Mezerville; Edgar Izquierdo-Sandí; Gerardo Avendaño-Alvarado; Ricardo Barahona-García; Alessia Ávalos-Giugliarelli; Rolando Páez-Sáenz; Rigoberto Salas-Aguilar

    2009-01-01

    Objetivos: Caracterizar la población de pacientes vistos con esta entidad en el Hospital "Dr. Rafael Angel Calderón Guardia" durante los últimos 6 años y determinar su presentación clínica, método(s) de diagnóstico utilizado (s), tratamiento brindado y evolución durante el primer año postratamiento. Materiales y métodos: Se analizaron los expedientes clínicos de hospitalización de los pacientes con acalasia atendidos desde enero de 2001 hasta enero de 2007; luego se revisaron las notas de evo...

  20. Una nueva mirada sobre Rafael del Olmo, a partir de los papeles de Torner conservados en la Biblioteca Tomas Navarro Tomás del CSIC (Madrid

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    Cristina Martí Martínez

    2014-01-01

    Estas partituras se presentan en este texto. Sin profundizar en todo su contenido, sí se dará noticia del nexo común a todas ellas: el compositor, de origen cordobés y malagueño de adopción, Rafael del Olmo y Bueno (1826-, que copió la mayoría de las piezas y de cuya breve obra nos ha llegado una zarzuela, algunos arreglos y varios villancicos para coro y banda con poesías del dramaturgo Ramón Franquelo Martínez (1824-1874.

  1. Aspectos epidemiológicos de la inducción del trabajo de parto en la Clínica de Maternidad Rafael Calvo C. Cartagena, Colombia

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    Edgar E. Rivas-Perdomo

    2013-10-01

    Full Text Available ResumenObjetivos: Describir los factores de riesgo para la inducción o conducción del trabajo de parto y sus resultados en la Clínica de Maternidad Rafael Calvo, Cartagena, Colombia. Materiales y Métodos: Se incluyeron a todas las pacientes (n = 98 de un total de 859 cuyos partos fueron inducidos o conducidos en la Clínica de Maternidad Rafael Calvo de Cartagena, durante el mes de Agosto-2004. Se consideraron variables clínicas y no clínicas. Se estudió por medio de análisis estratificado. Resultados: La inducción y conducción ocurrió en 11,4%. Los factores de riesgo fueron los siguientes. Edad < 18  años 22,4%; 19-34 años: 73,5%. Escolaridad Primaria: 26,6%; secundaria: 69%. Nuliparidad: 44,9%. La complicación médica mas frecuente fue la ruptura prematura de membranas. Conclusiones: Se encontraron variaciones en las inducciones y conducciones del trabajo de parto, sin relaciones directas con condiciones como edad, estatus marital o escolaridad. La nuliparidad fue el factor más frecuentemente observado. Pero la inducción del trabajo de parto no incrementó la tasa de partos por cesárea. Se obtuvieron buenos resultados perinatales. (Duazary 2007; 1: 38 - 44AbstractObjectives: To describe labor induction and conduction risk factors induction and consequences in the Maternity Clinic Rafael Calvo, Cartagena, Colombia. Materials and methods: were included all the patients (n = 98 of a total of 859 whose labor were induced or driven in the Maternity Clinic Rafael Calvo from Cartagena, during the month of August-2004. They were considered clinical and not clinical variables. It was studied by means of stratified analysis. Results: The induction and conduction occurred in 11, 4%. The risk factors were the following ones. Age <18 years 22,4%; 19-34 years: 73,5%. Primary Education: 26,6%; secondary: 69%. Nuliparidad: 44,9%. The medical complication but it frequents it was the premature rupture of membranes. Conclusions: They were

  2. Geomorphic Response to Neotectonic Rise of the Middle Russian Upland: the case of the Ostrogozhsk Uplift (European Russia)

    Science.gov (United States)

    Romanovskaya, Maria; Bessudnov, Alexandr; Kosevich, Natalya; Kuznetsova, Tatyana

    2016-04-01

    The Ostrogozhsk Neotectonic Uplift is located in the south of the Middle Russian Upland (East European Plain). Tectonically, it is associated with the northeastern wing of the Voronezh Anteclise. Our geomorphological study of the area has shown that the Ostrogozhsk Uplift is an actively growing structure (Romanovskaya, 2015). According to recent studies neotectonic uplift amplitude can be estimated at more than 200 m. This growth has played a major role in landscape formation all around. This is clearly demonstrated by the following: recent dramatic changes in the flow directions of the rivers Don and Tikhaya Sosna as they had to bypass growing upland; instances of damming up, which created numerous oxbow lakes and led to waterlogging in floodplains; increase in the density of the erosion grid on the upland itself. On three sides, the Uplift slopes down towards neotectonic depressions. Lying at markedly different altitudes, the upland and the river floodplains connected with the depressions now possess contrasting local climates and support contrasting ecosystems. Land rise and concomitant fall of the groundwater table intensified erosion, weathering, karst and slope wash processes. These, in turn, have created numerous canyon-shaped ravines, very steep slopes (>60°) and interconnected bastion-like relief forms. Surrounded by protections in the form of steep slopes and water courses, the area is now a natural fortress which has favored human habitation since the Late Paleolithic Age. In a location in the Tikhaya Sosna river basin, gully erosion has exposed a large accumulation of ancient horse bones and human-made stone artifacts (Upper Paleolithic Multi-Level Archaeological Site Divnogorie-9, 13.5 ka - 14 ka BP) (Kuznetsova, 2014) and a cemetery left by the Mayatskoye medieval settlement (9th-10th centuries AD). Superimposed on the geology of the area, neotectonic movements and erosion have led to the formation of a very peculiar relief type - an assemblage of

  3. Dual-system Tectonics of the San Luis Range and Vicinity, Coastal Central California

    Science.gov (United States)

    Hamilton, D. H.

    2010-12-01

    topography; the rapidly uplifting San Luis Range represents the field of NE-SW compression driving a thrust—backthrust thrust fault wedge “popup” while the adjacent shear strike slip faulting associated with the plate boundary San Gregorio-Hosgri splay of the San Andreas fault system results in only minor surface deformation of the sea floor surface of late Quaternary marine planation. Interaction between the two tectonic systems occurs mainly along the SE shoreline of Estero Bay where NNW aligned strike slip faults intersect the uplifting San Luis Range thrust fault “popup” wedge, and along the recently identified Shoreline fault, against which the SSW-vergent leading edge of the San Luis Range thrust impinges at depths of 1-5 km. The latter structural relationship gives rise to locally pronounced west facing sea floor surface scarps along a fault with mostly or entirely horizontal strike slip motion. Overall the San Luis Range and vicinity constitutes an excellent full scale laboratory for observation of evidence of a variety of tectonic processes in action. The opportunity for studies of tectonism here arises not only from the geologically and topographically clearly exhibited effects of the two interacting tectonic fields (NNW shear; NE-SW compression) but also from the extensive baseline studies of the area conducted during the past 40 years.

  4. Rafael Enrique Acevedo Puello. Memorias, lecciones y representaciones históricas. La celebración del primer centenario de la Independencia en las escuelas de la provincia de Cartagena (1900-1920

    Directory of Open Access Journals (Sweden)

    Hernando Andrés Andrés Pulido Londoño

    2012-06-01

    Full Text Available Normal 0 21 false false false ES-CO X-NONE X-NONE MicrosoftInternetExplorer4 El historiador cartagenero Rafael Acevedo propone en esta obra, basada en la monografía con la que obtuvo el Magíster en Historia de la Universidad Nacional de Colombia, un acercamiento a los usos públicos de la historia y la recreación de la memoria desde un análisis de los actos conmemorativos del centenario de la Independencia absoluta de la provincia de Cartagena, cuya preparación y festejos acaecieron durante las dos primeras décadas del siglo XX. Acevedo indaga por el papel de estudiantes y docentes de las escuelas públicas y privadas de Cartagena en la reelaboración de la memoria local sobre los acontecimientos del 11 de noviembre de 1811, y su posterior represión por los ejércitos de Pablo Morillo iniciada con el sitio de Cartagena en 1815. /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Tabla normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

  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. Quaternary landscape development, alluvial fan chronology and erosion of the Mecca Hills at the southern end of the San Andreas Fault zone

    Science.gov (United States)

    Gray, Harrison J.; Owen, Lewis; Dietsch, Craig; Beck, Richard A.; Caffee, Marc A.; Finkelman, Robert B.; Mahan, Shannon

    2014-01-01

    Quantitative geomorphic analysis combined with cosmogenic nuclide 10Be-based geochronology and denudation rates have been used to further the understanding of the Quaternary landscape development of the Mecca Hills, a zone of transpressional uplift along the southern end of the San Andreas Fault, in southern California. The similar timing of convergent uplifts along the San Andreas Fault with the initiation of the sub-parallel San Jacinto Fault suggest a possible link between the two tectonic events. The ages of alluvial fans and the rates of catchment-wide denudation have been integrated to assess the relative influence of climate and tectonic uplift on the development of catchments within the Mecca Hills. Ages for major geomorphic surfaces based on 10Be surface exposure dating of boulders and 10Be depth profiles define the timing of surface stabilization to 2.6 +5.6/–1.3 ka (Qyf1 surface), 67.2 ± 5.3 ka (Qvof2 surface), and 280 ± 24 ka (Qvof1 surface). Comparison of 10Be measurements from active channel deposits (Qac) and fluvial terraces (Qt) illustrate a complex history of erosion, sediment storage, and sediment transport in this environment. Beryllium-10 catchment-wide denudation rates range from 19.9 ± 3.2 to 149 ± 22.5 m/Ma and demonstrate strong correlations with mean catchment slope and with total active fault length normalized by catchment area. The lack of strong correlation with other geomorphic variables suggests that tectonic uplift and rock weakening have the greatest control. The currently measured topography and denudation rates across the Mecca Hills may be most consistent with a model of radial topographic growth in contrast to a model based on the rapid uplift and advection of crust.

  9. Multiple uplift phases inferred from the Southwest African Atlantic margin

    Science.gov (United States)

    Scheck-Wenderoth, Magdalena; Cacace, Mauro; Dressel, Ingo

    2015-04-01

    The South Atlantic basins offshore Namibia and South Africa stored more than 10 km thick sedimentary successions that are separated by major unconformities into several sequences. These sedimentary units rest on a thinned continental crust of a magmatic passive margin. Using a 3D forward modelling approach considering flexural compensation of a rheologically differentiated lithosphere in response to sedimentary loading after stretching on one hand and the thermal feed-back between cooling of the stretched lithosphere and insulating sediments on the other hand we derive quantitative estimates on how vertical movements have influenced the margin after stretching. The approach combines the consideration of observations on sediment configuration as well as on crustal thickness (ß-factor) with the process of lithosphere thinning and subsequent thermal re-equilibration. These estimates are conservative estimates as they are based on the preserved sediments only whereas eroded sediments are not considered. Nevertheless, the approach considers thermo-mechanical coupling in 3D and both initial conditions as well as sedimentary history are constrained by observations. Specific effects include the delayed thermal re-equilibration of the thinned lithosphere due to deposition of insulating sediments and the related thermal feedback on lithosphere rheology and therefore on the flexural response to sediment loading. Our results indicate that in addition to predominantly continuous subsidence also phases of uplift have affected the southwestern African margin during the syn-rift and post-rift evolution. The spatio-temporal variation of vertical movements is controlled by the amount of initial thinning of the lithosphere, the variation of rheological characteristics (lithology and temperature) but also by the distribution of sediment supply (loading and thermal insulation).

  10. Paleobiology of the Mesoproterozoic Billyakh Group, Anabar Uplift, northern Siberia

    Science.gov (United States)

    Sergeev, V. N.; Knoll, A. H.; Grotzinger, J. P.

    1995-01-01

    Silicified peritidal carbonates of the Mesoproterozoic Kotuikan and Yusmastakh Formations, Anabar Uplift, northeastern Siberia, contain exceptionally well-preserved microfossils. The assemblage is dominated by ellipsoidal akinetes of nostocalean cyanobacteria (Archaeoellipsoides) and problematic spheroidal unicells (Myxococcoides); both are allochthonous and presumably planktonic. The assemblage also includes distinctive mat-forming scytonematacean and entophysalidacean cyanobacteria, diverse short trichomes interpreted as cyanobacterial hormogonia or germinated akinetes, rare longer trichomes, and several types of colonial unicells. Although many taxa in the Kotuikan-Yusmastakh assemblage are long-ranging prokaryotes, the overall character of the assemblage is distinctly Mesoproterozoic, with its major features shared by broadly coeval floras from Canada, China, India, and elsewhere in Siberia. Microfossils also occur in middle to inner shelf shales of the Ust'-Il'ya and lower Kotuikan Formations. Leiosphaerid acritarchs (up to several hundred microns in diameter) characterize this facies. As in other Mesoproterozoic acritarch assemblages, acanthomorphic and other complex forms that typify Neoproterozoic assemblages are absent. The combination in Billyakh assemblages of exceptional preservation and low eukaryotic diversity supports the hypothesis that nucleated organisms diversified markedly near the Mesoproterozoic-Neoproterozoic boundary. The assemblages also demonstrate the antiquity of cyanobacteria capable of cell differentiation and suggest the importance of both changing peritidal substrates and evolving eukaryotes in determining stratigraphic patterns of Proterozoic prokaryotes. The permineralized assemblage contains 33 species belonging to 17 genera. Ten new species or new combinations are proposed: Archaeoellipsoides costatus n. sp., A. elongatus n. comb., A. dolichos n. comb., A. minor n. nom., A. crassus n. comb., A. major n. comb., A. bactroformis n

  11. Shock metamorphism of Bosumtwi impact crater rocks, shock attenuation, and uplift formation.

    Science.gov (United States)

    Ferrière, Ludovic; Koeberl, Christian; Ivanov, Boris A; Reimold, Wolf Uwe

    2008-12-12

    Shock wave attenuation rate and formation of central uplifts are not precisely constrained for moderately sized complex impact structures. The distribution of shock metamorphism in drilled basement rocks from the 10.5-kilometer-diameter Bosumtwi crater, and results of numerical modeling of inelastic rock deformation and modification processes during uplift, constrained with petrographic data, allowed reconstruction of the pre-impact position of the drilled rocks and revealed a shock attenuation by approximately 5 gigapascals in the uppermost 200 meters of the central uplift. The proportion of shocked quartz grains and the average number of planar deformation feature sets per grain provide a sensitive indication of minor changes in shock pressure. The results further imply that for moderately sized craters the rise of the central uplift is dominated by brittle failure.

  12. Uplifting behavior of shallow buried pipe in liquefiable soil by dynamic centrifuge test.

    Science.gov (United States)

    Huang, Bo; Liu, Jingwen; Lin, Peng; Ling, Daosheng

    2014-01-01

    Underground pipelines are widely applied in the so-called lifeline engineerings. It shows according to seismic surveys that the damage from soil liquefaction to underground pipelines was the most serious, whose failures were mainly in the form of pipeline uplifting. In the present study, dynamic centrifuge model tests were conducted to study the uplifting behaviors of shallow-buried pipeline subjected to seismic vibration in liquefied sites. The uplifting mechanism was discussed through the responses of the pore water pressure and earth pressure around the pipeline. Additionally, the analysis of force, which the pipeline was subjected to before and during vibration, was introduced and proved to be reasonable by the comparison of the measured and the calculated results. The uplifting behavior of pipe is the combination effects of multiple forces, and is highly dependent on the excess pore pressure.

  13. Uplifting Behavior of Shallow Buried Pipe in Liquefiable Soil by Dynamic Centrifuge Test

    Directory of Open Access Journals (Sweden)

    Bo Huang

    2014-01-01

    Full Text Available Underground pipelines are widely applied in the so-called lifeline engineerings. It shows according to seismic surveys that the damage from soil liquefaction to underground pipelines was the most serious, whose failures were mainly in the form of pipeline uplifting. In the present study, dynamic centrifuge model tests were conducted to study the uplifting behaviors of shallow-buried pipeline subjected to seismic vibration in liquefied sites. The uplifting mechanism was discussed through the responses of the pore water pressure and earth pressure around the pipeline. Additionally, the analysis of force, which the pipeline was subjected to before and during vibration, was introduced and proved to be reasonable by the comparison of the measured and the calculated results. The uplifting behavior of pipe is the combination effects of multiple forces, and is highly dependent on the excess pore pressure.

  14. How do subduction processes contribute to forearc Andean uplift? Insights from numerical models

    Science.gov (United States)

    Martinod, J.; Regard, V.; Letourmy, Y.; Henry, H.; Hassani, R.; Baratchart, S.; Carretier, S.

    2016-05-01

    We present numerical models to study how changes in the process of subduction may explain the observed Quaternary uplift of the Andean forearc region. Indeed, most segments of the South American Pacific coasts between 16 and 32° S have been uplifting since the Lower Pleistocene, following a period of stability of the forearc region. Models confirm that local uplift is expected to occur above ridges, this phenomenon being predominant in central Peru where the Nazca Ridge is subducting. We investigate the effects of slab pull, interplate friction and convergence velocity on the vertical displacements of the overriding plate. We propose that the global tendency to coastal uplift is accompanying the deceleration of the Nazca-South America convergence that occurred in the Pleistocene. In contrast, forearc subsidence may accompany increasing convergence velocities, as suggested by the subsidence history of the South America active margin.

  15. Segmented Coastal Uplift Along an Erosional Subduction Margin, Northern Hikurangi Fore Arc, North Island, New Zealand

    Science.gov (United States)

    Marshall, J. S.; Litchfield, N. J.; Berryman, K. R.; Clark, K.; Cochran, U. A.

    2013-12-01

    The Hikurangi subduction margin along North Island, New Zealand accommodates oblique convergence of the Pacific plate westward beneath the Australian plate at 45 mm/yr. Along the southern margin, frontal accretion and pronounced forearc uplift occur inboard of the subducting Hikurangi plateau. In the north, subduction erosion and segmented uplift occur inboard of subducting seamounts along the plateau flank. Prior workers have established a robust foundation for coastal terrace studies along the northern Hikurangi margin (e.g., Berryman et al., 1989; Ota et al., 1992; Berryman, 1993; Wilson et al., 2006, 2007; Clark et al., 2010; Litchfield et al, 2007, 2010). New field observations presented here provide additional constraints on terrace uplift along this erosional subduction margin. Along Raukumara Peninsula (north of Poverty Bay), multiple Holocene to late Pleistocene marine and fluvial terraces occur at varying elevations, recording differential uplift across six coastal segments from Gisborne to East Cape (Ota et al., 1992; Wilson et al., 2007). In this study, two to three late Pleistocene terraces were observed on rocky headlands within the first segment (Gisborne to Whangara) at elevations of 80-185 m above msl. Preliminary correlation with OIS 5a-e sea level high stands (80-125 ka) indicates net uplift at 1.2-1.5 m/ky. Uplifted Holocene wavecut platforms occur in steps along the seaward edge of these terraces, consistent with coseismic uplift. At Makorori Point, an uplifted bench occurs along the modern seacliff at 2.3 m above the cliff base. A fossil gastropod shell from paleo-beach gravels on the platform inner edge yielded a calibrated radiocarbon age of 1680 ×110 ybp. At Turihaua Point, a ≥1 m thick deposit of Holocene beach sands overlies an uplifted wavecut platform at ≥1.5 m above mean sea level. Carbonate-cemented beachrock at the base of the sand deposit yields a calibrated radiocarbon age of 2990 ×70 ybp. At Mahia Peninsula (between Poverty

  16. De Sitter Vacua from a D-term Generated Racetrack Uplift

    CERN Document Server

    Rummel, Markus

    2014-01-01

    We propose an uplift mechanism using a structure of multi-K\\"ahler moduli dependence in the F-term potential of type IIB string theory compactifications. This mechanism requires a D-term condition that fixes one modulus to be proportional to another modulus, resulting in a trivial D-term potential. De Sitter minima are realized along with an enhancement of the volume in the Large Volume Scenario and no additional suppression of the uplift term such as warping is required. We further show the possibility to realize the uplift mechanism in the presence of more K\\"ahler moduli such that we expect the uplift mechanism to work in many other compactifications.

  17. 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…

  18. 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...

  19. EL REGISTRO ARQUEOLÓGICO EN EL SITIO LA OLLA (SAN RAFAEL, MENDOZA: IMPLICACIONES PARA LAS OCUPACIONES HUMANAS EN EL VALLE MEDIO DEL RÍO ATUEL / Archeological record of “La Olla” site (San Rafael, Mendoza: Implications for the human occupations in the mi

    Directory of Open Access Journals (Sweden)

    Miguel Angel Giardina

    2015-06-01

    Full Text Available Se presenta el registro arqueológico recuperado en el sitio La Olla, el cual comprende materiales cerámicos, líticos, arqueobotánicos, zooarqueológicos y bioantropológicos. Dicho sitio se encuentra localizado en el valle del río Atuel (Mendoza, Argentina. El trabajo intenta ajustar el conocimiento de la dispersión agrícola prehispánica utilizando información en sectores no estudiado previamente. Se definen dos pulsos discontinuos en el depósito de La Olla, el más antiguo en torno a 1900 años 14C AP y el otro entre 700 y 400 años 14C AP. El análisis confirma una estabilidad en la subsistencia y dieta humana basada en recursos de bajo retorno energético compuesta entre otros por algarrobo y animales pequeños como peces y dasipódidos. Por otra parte, se evidencian cambios en la organización tecnológica que son interpretados en términos de movilidad y rangos de acción. De este modo, el sitio La Olla muestra cómo se manifestarían ocupaciones penecontemporáneas y espacialmente cercanas a los Contextos Atuel I y Atuel II. Abstract  This paper presents the archaeological record of La Olla site, located in the Atuel river valley (Mendoza, Argentina. Materials found and analyzed include lithics, ceramics, archaeobotanical, zooarchaeological and human remains. The paper attempts to adjust the state of knowledge of the pre-Hispanic agricultural dispersal using new information. Two discontinuous temporal pulses were recorded in La Olla, the former around 1900 RCYBP and the later between 700 and 400 years RCYBP. The archaeological analysis confirms stability in human subsistence and human diet based on low rank resources which included carob (mesquite and small animals such as fish and armadillo. Changes in the technological organization were also recorded, which are interpreted in terms of mobility and action ranges. The archaeological record of La Olla site shows a different perspective about the human occupation to the classic contexts of Atuel II and Atuel I sites.

  20. Estudio composicional de los sedimentos de la Gruta del Indio, Rincón del Atuel, departamento de San Rafael, Mendoza Compositional study of the sediments from the Gruta del Indio, Rincón del Atuel, county of San Rafael, Mendoza

    Directory of Open Access Journals (Sweden)

    R. Andreis

    2007-11-01

    Full Text Available En los sedimentos que constituyen el relleno de la gruta del Indio, Rincón del Atuel, se reconocieron tres niveles formados por acción fluvial intermitente y cuya distribución horizontal está parcialmente perturbada por la caída de bloques de basalto desde el techo. Los porcentajes y distribución de los componentes orgánicos, constituidos por humus, carbón, fitolitos y colofanita, es muy variable y está regulada por la actividad del hombre y de los animales. Los componentes detríticos son los más abundantes y generalmente superan el 90%, con amplio predominio de los constituyentes livianos. Los litoclastos volcánicos, los vitroclastos y las plagioclasas cálcicas son las variedades más abundantes, acompañadas por escaso cuarzo mono y policristalino, feldespatos potásicos, fragmentos carbonáticos y minerales pesados. De acuerdo a las características de los clastos se puede inferir un aporte sedimentario local, representado por clastos volcánicos provenientes de derrumbes y su mezcla con materiales similares derivados de la erosión de los depósitos subyacentes y otro alóctono fluvial, a los que se suma el aporte piroclástico. El conjunto de sedimentos analizados puede ser incluido en el grupo de las paratufitas. La baja madurez mineralógica de los sedimentos sugiere condiciones climáticas frias y secas. Sin embargo en los niveles superficiales, la presencia de agregados micríticos originados por precipitación in situ de aguas bicarbonatadas, indica condiciones esporádicas de humedad, las que son corroboradas, al igual que las bajas temperaturas, por la presencia de fragmentos quebrados de gutolitas.The infilling of the shelter is composed of three levels, all of them generated during intermittent fluvial action. The horizontal distribution of the infilling is sometimes disrupted by basaltic crumble from the roof of the shelter. The distribution of organic components is quite variable and it is controlled by the human and animal activity. They include: humus, coal, silicophytoliths and collophanite. Detrital grains are the most abundant and represent over 90 % of the whole samples analysed. They are clearly dominated by the light fraction. Volcanic lithoclasts, vitroclasts and calcic plagioclases are the more frequent constituents accompanied by scarce monocrystalline and polycrystalline quartz, potash feldspar, carbonate fragments and heavy minerals. A local sedimentary provenance is suggested on the basis of the clasts features. They are associated with roof's crumbles and the mixture with similar debris resulted from the erosion of the underlying deposits, and aloctonous fluvial and pyroclastic materials. The sediments may be included it the group of the para-tuff and the low mineralogical maturity observed suggests a dry and cold climate. However, micritic aggregates deposited on the surface are considerd to be the result of precipitation in situ of bicarbonated waters which indicates transient humid conditions. This interpretation is constrained for broken dripstones fragments.

  1. Estrategias de dispersión y regeneración por bancos de semillas en dos comunidades de bosque altoandino (Embalse de San Rafael, La Calera - Cundinamarca) Strategies of dispersion and regeneration for Seed banks in two communities of bosque altoandino (Dam of San Rafael, La Calera - Cundinamarca)

    OpenAIRE

    2000-01-01

    Este trabajo se realizó entre marzo de 1999 y febrero de 2000, abarcando las épocas lluviosa y seca.Se establecieron las estrategias predominantes de dispersión en la vegetación y en las especies delBanco de Semillas Germinable (BSG). También se estableció la composición de especies de losBancos Transitorio, Pseudopersistente y Persistente. En la vegetación predominó la zoocoria con77% seguida por la anemocoria con 14% y la barocoria con 9%. Mientras que en el Banco de Se-millas Germinable pr...

  2. Estrategias de dispersión y regeneración por bancos de semillas en dos comunidades de bosque altoandino (Embalse de San Rafael, La Calera - Cundinamarca Strategies of dispersion and regeneration for Seed banks in two communities of bosque altoandino (Dam of San Rafael, La Calera - Cundinamarca

    Directory of Open Access Journals (Sweden)

    Montenegro Salcedo Alba Lucia

    2000-06-01

    Full Text Available Este trabajo se realizó entre marzo de 1999 y febrero de 2000, abarcando las épocas lluviosa y seca.Se establecieron las estrategias predominantes de dispersión en la vegetación y en las especies delBanco de Semillas Germinable (BSG. También se estableció la composición de especies de losBancos Transitorio, Pseudopersistente y Persistente. En la vegetación predominó la zoocoria con77% seguida por la anemocoria con 14% y la barocoria con 9%. Mientras que en el Banco de Se-millas Germinable predominó la anemocoria con 75% seguida por la zoocoria con 22%, labarocoria con 3% y la autocoria con menos de 0.1%. En el Banco de Semillas la especie dominantefueCarex sp. (Anemócora que presentó casi 50% del mismo. Igualmente, el Banco de SemillasPersistente también estuvo dominado por especies anemócoras en 84%. Se estableció la dinámicade estas estrategias en el BSG, a nivel espacial y temporal, teniendo en cuenta la fenofase dedispersión. En la dinámica temporal, se encontró que en general la composición del BSG dependeprincipalmente de la lluvia de semillas y de la persistencia de las mismas. Así en este trabajo, elBanco Transitorio presentó fluctuaciones en su densidad relacionadas con la baja persistencia delas semillas unida a una corta duración de la fenofase de dispersión. Mientras que el BancoPersistente presentó una densidad casi constante, favorecida por la alta longevidad de las semillasy/o una prolongada fenofase de dispersión que permite a las semillas de longevidad moderada,una moderada persistencia, como ocurre en el Banco Pseudopersistente. En cuanto a los tipos dedispersión, su permanencia en el Banco Persistente puede lograrse por una combinación de es-trategias tales como una alta longevidad de las semillas, un ingreso continuo al Banco para el casode la barocoria especialmente, y además un aporte de semillas de origen distante para la zoocoria y la anemocoria. En la dinámica espacial, se encontró que la distribución de las semillas está con-dicionada por un conjunto de factores específicos para cada tipo de dispersión. Así, en la anemocoriadichos factores son de tipo físico como la cobertura de la vegetación, la mayor o menor exposiciónal viento y la altura de la planta parental. En la barocoria, el principal factor parece ser la distanciaentre las plantas parentales y en la zoocoria, la oferta de algún recurso atractivo para los dispersores.The temporary dynamics of each dispersion type was studied (Anemocoria, Zoocoria andBarocoria in the vegetation and in Germinable Seed bank (GSB. The space dynamics of eachdispersion type was also analyzed in the GSB, and the species were identified that the Banks ofTransitory, Persistent type and Pseudopersistente conform, analyzing some Life History traitsthat can be determining such dynamics.

  3. Simulation of gas hydrate dissociation caused by repeated tectonic uplift events

    Science.gov (United States)

    Goto, Shusaku; Matsubayashi, Osamu; Nagakubo, Sadao

    2016-05-01

    Gas hydrate dissociation by tectonic uplift is often used to explain geologic and geophysical phenomena, such as hydrate accumulation probably caused by hydrate recycling and the occurrence of double bottom-simulating reflectors in tectonically active areas. However, little is known of gas hydrate dissociation resulting from tectonic uplift. This study investigates gas hydrate dissociation in marine sediments caused by repeated tectonic uplift events using a numerical model incorporating the latent heat of gas hydrate dissociation. The simulations showed that tectonic uplift causes upward movement of some depth interval of hydrate-bearing sediment immediately above the base of gas hydrate stability (BGHS) to the gas hydrate instability zone because the sediment initially maintains its temperature: in that interval, gas hydrate dissociates while absorbing heat; consequently, the temperature of the interval decreases to that of the hydrate stability boundary at that depth. Until the next uplift event, endothermic gas hydrate dissociation proceeds at the BGHS using heat mainly supplied from the sediment around the BGHS, lowering the temperature of that sediment. The cumulative effects of these two endothermic gas hydrate dissociations caused by repeated uplift events lower the sediment temperature around the BGHS, suggesting that in a marine area in which sediment with a highly concentrated hydrate-bearing layer just above the BGHS has been frequently uplifted, the endothermic gas hydrate dissociation produces a gradual decrease in thermal gradient from the seafloor to the BGHS. Sensitivity analysis for model parameters showed that water depth, amount of uplift, gas hydrate saturation, and basal heat flow strongly influence the gas hydrate dissociation rate and sediment temperature around the BGHS.

  4. Response of glacial landscapes to spatial variations in rock uplift rate

    Science.gov (United States)

    Brocklehurst, Simon H.; Whipple, Kelin X.

    2007-06-01

    The response of glaciated landscapes to rapid rock uplift, driven by tectonic convergence, is an important, often neglected, aspect of proposed interactions between plate tectonic processes and climate change. Rivers typically respond to more rapid rock uplift in part through increasing channel gradients. In contrast, the "glacial buzzsaw" hypothesis suggests that glaciers can erode as quickly as the fastest rock uplift rates (6-10 mm/yr) without any increase in mean elevations. However, it has not been established how this is achieved. We examined moving window maps, swath and longitudinal profiles, hillslope relief, and hypsometry for glacierized and formerly glacierized basins in areas of spatially variable rock uplift rate in the Southern Alps, New Zealand, and around Nanga Parbat, Pakistan, to determine whether glaciers have a specific response to rapid rock uplift. The response of these glaciated landscapes to rapid rock uplift (6-10 mm/yr) comprises (1) modest steepening of the longitudinal profiles in smaller glaciated basins, (2) maintenance of shallow downvalley slopes in larger glaciated basins (>˜30 km2, Southern Alps; >˜100 km2, Nanga Parbat), (3) development of tall headwalls, and (4) steepening of the basin as a whole, dominated by hillslope lengthening. Around Nanga Parbat, headwalls several kilometers high constitute >50% of the basin relief. At rapid rock uplift rates, although glaciers can incise the valley floor swiftly, they cannot prevent headwalls from reaching exceptional heights. The associated increase in mean distance between cirque heads (i.e., a decrease in drainage density) causes regional mean elevation to rise with increasing rock uplift rate. However, this is much less than the changes in elevation expected in unglaciated ranges.

  5. Structural pattern in central uplifts of cryptoexplosion structures as typified by Sierra Madera

    Science.gov (United States)

    Wilshire, H.G.; Howard, K.A.

    1968-01-01

    The pattern of deformation in central uplifts of Sierra Madera and other well-known cryptoexplosion structures indicates that inward as well as upward movement of strata formed the uplifts. This kind of movement is incompatible with structures not of impact origin with which they have been compared. The structural style of cryptoexplosion structures, together with features that suggest shock deformation, supports the belief that they are the eroded roots of impact craters.

  6. Erosion-driven uplift in the Gamburtsev Subglacial Mountains of East Antarctica.

    OpenAIRE

    Paxman, G. J. G.; Watts, A. B.; Ferraccioli, F.; Jordan, T.A.; R. E. Bell; Jamieson, S.S.R.; Finn, C A

    1999-01-01

    The relative roles of climate and tectonics in mountain building have been widely debated. Central to this debate is the process of flexural uplift in response to valley incision. Here we quantify this process in the Gamburtsev Subglacial Mountains, a paradoxical tectonic feature in cratonic East Antarctica. Previous studies indicate that rifting and strike-slip tectonics may have provided a key trigger for the initial uplift of the Gamburtsevs, but the contribution of more recent valley inci...

  7. Test of the uplift of Tibetan Plateau by FG5 absolute gravimeter at Lhasa station

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The uplift of the Tibetan Plateau has been monitored by the FG5 absolute gravimeter, whose observing accuracy is as high as 2×10-8 m/s2. The analysis of the gravity observation results at the Lhasa station in 1999 and 1993 shows that the gravity value has decreased by 12×10-8 m/s2, and it is confirmed that the Lhasa region is uplifting at a rate of 10 mm/a.

  8. Andean uplift promotes lowland speciation through vicariance and dispersal in Dendrocincla woodcreepers.

    Science.gov (United States)

    Weir, Jason T; Price, Momoko

    2011-11-01

    Andean uplift contributed importantly to the build-up of high Neotropical diversity. Final uplift of the Eastern Cordillera of Colombia separated once-contiguous lowland faunas east and west of the Andes between 5 and 3.5 million years ago (Ma hereafter). We used DNA sequences from several moderate- to fast-evolving mitochondrial and two slow-evolving nuclear genes to generate a well-supported phylogeny of Dendrocincla woodcreepers, a genus with multiple species endemic to lowland regions both east and west of the Andes. A time-calibrated phylogeny and dispersal-vicariance analysis indicated that uplift of the Eastern Cordillera of Colombia resulted in the initial vicariant separation of a widespread lowland form east and west of the Andes at c. 3.6 Ma. This was followed by two separate east-to-west dispersal events over or around the completed Andes, each producing a genetically distinct lineage. Our analysis suggests that Andean uplift promoted the build-up of biodiversity in lowland Neotropical faunas both through vicariance-based speciation during uplift and through dispersal-based speciation following uplift. In contrast to the multiple colonizations of the trans-Andean region by Dendrocincla, the Atlantic Forest was colonized from the Amazon only once, followed by in situ diversification.

  9. The Yulong Mountains Structural Culmination: Tectonic and Geomorphic Controls on Localized Uplift Rates and Exhumation

    Science.gov (United States)

    Studnicki-Gizbert, C.; Wang, Y.; Burchfiel, B. C.; Chen, L.

    2005-12-01

    The active tectonics of the Eastern margin of the Tibetan plateau are characterised by left-lateral faults accommodating clockwise rotation of crustal fragments and normal faults accommodating generally east-west directed extension in the wake of the northward propagating eastern Himalayan syntaxis. Within the corridor of transtensional deformation that extends from Dali to Zhongdian, the Jinsha (Yangzi) river interacts with a closed circuit of normal and transtensional faults and results in localised high mean and maximum elevations, anomalously high rock uplift rates and the exposure of deep structural levels and metamorphic rocks in the core of fault-bounded antiformal dome. Flexural uplift of the footwalls of the bounding normal faults due to tectonic and erosional unroofing can plausibly explain the high elevations in the core of the range. However, geomorphic indicators of high uplift rates do not unequivocally coincide with the distribution of uplift and subsidence predicted by such a model. Nor does such a model yield any insight into the role of extreme fluvial incision in either accommodating or driving anomalously high uplift rates (and thus total exhumation). Moreover, unlike the association of antiformal culminations with transverse rivers reported in many compressional belts (Simpson 2004 and references therein), localised erosional unloading ought to relieve vertical stresses driving extensional faulting. Alternatively, we envisage a model somewhat analogous to the reactive diapirs well known from salt tectonics: both tectonic extension and geomorphic unloading weaken and thin the brittle upper crust and accommodate localized, anomalously high rock uplift rates.

  10. Fluvial dissection, isostatic uplift, and geomorphological evolution of volcanic islands (Gran Canaria, Canary Islands, Spain)

    Science.gov (United States)

    Menéndez, Inmaculada; Silva, Pablo G.; Martín-Betancor, Moises; Pérez-Torrado, Francisco José; Guillou, Hervé; Scaillet, S.

    2008-11-01

    Digital analysis of torrential gullies ('barrancos') deeply incised into the volcanic Island of Gran Canaria (Canary Islands) allows us to extract the longitudinal profiles and pre-incision surfaces for individual basins, from which morphometric parameters (length, elevation, area, slope) have been calculated. Other derived parameters, such as ridgeline profiles, maximum incision values, volume removed by fluvial erosion, geophysical relief and isostatic uplift, have also been computed. Based on K/Ar ages for the island, well-constrained incision-uplift rates have been calculated by means of the combination of different methodological approaches commonly used in orogens and large mountain ranges. The geomorphological and morphometric analyses reveal that the island is clearly divided into four environmental quadrants determined by the combination of a couple of key-factors: the age of the volcanic surfaces and the climatic conditions. These factors determine a young sector covered with Plio-Quaternary platform-forming lavas (finished at 1.9-1.5 Ma) evolving under contrasting wet (NE) to dry (SE) climates, and an older sector, conserving the residual surfaces of the Miocene shield building (14.5-8.7 Ma) at the ridgelines, also subjected to wet (NW) and dry (SW) climates. Incision is related to the age zonation of the island. Maximum incisions (< 1200 m) are logically recorded in the older SW sector of the island, but incision rates are directly related to the climatic zonation, with maximum mean values in the wet Northern quadrants (0.18-0.12 mm/yr). The evaluation of the material removed by fluvial erosion for individual basins allows us to assess the consequent theoretical isostatic response in the different sectors of the island. The obtained uplift rates indicate that water availability (by drainage area and elevation) is a relevant controlling factor: the records from the wet Northern sectors show uplift values of between 0.09 and 0.03 mm/yr, whereas in the

  11. Osmanlı Ordusunda Venezuelalı Bir Gezgin Şövalye: Rafael de Nogales Méndez A Venezuelian Knight Errant In The Ottoman Army: Rafael de Nogales Méndez

    Directory of Open Access Journals (Sweden)

    Hüseyin Güngör ŞAHİN

    2013-09-01

    Full Text Available Rafael de Nogales Méndez, a citizen of Venezuela, served as asoldier of fortune in the World War I. Being a mysterious figure of hislifetime period, Nogales spent almost fifty years of his lifespan outside ofhomeland by going around the world away because of opposition to thedictatorial regimes. Nogales, passionate for military service andadventure, waged war in Cuba in 1898; he worked for dictator PorfirioDiaz as a mounted guard in the Mexican-American border; after a while,he had become a Mexican revolutionist by joining up the rebelliousforces against Diaz; a secret agent in the Far East, an assassin teammember in Guatemala; a rebel for years and a government officialduring the last period of his lifetime in his homeland. Nogales hadexpressed that his motto was; "When you see a good war, join up to it towaged war!" He was considering himself as "a soldier of fortune and thecitizen of the world". He was a military enthusiast, fighter, traveler,adventurer and also a writer. If I may say so, he was the Don Quixote ofthe 20th century.In this study, based on the memoirs quoted in the books ofNogales, his life history has been examined and the narratives of theauthor related the historical events in that period have been researchedcomparatively with the original sources. To this end, various officialsources, records and memoirs have been reviewed and made archivalresearch. On the other hand, earning new information and documentsto the literature in this field are among the objectives of the study. Venezuela vatandaşı Rafael de Nogales Méndez, I. Dünya Savaşı'nda Osmanlı Ordusu'nda gönüllü subay olarak görev yapmıştır. Yaşadığı dönemin gizemli figürlerinden biri olan Nogales, altmış yıllık ömrünün elli yılını muhalif olduğu dikta rejimleri nedeniyle ülkesinden uzakta, dünyayı dolaşarak geçirmiştir. Askerlik ve macera tutkunu Venezuelalı, 1898 yılında Küba'da savaşmış, Meksika-Amerika sınırında diktat

  12. Oroclinal Bending and Mountain Uplift in the Central Andes

    Science.gov (United States)

    Mpodozis, C.; Arriagada, C.; Roperch, P.

    2007-05-01

    The large paleomagnetic database now available for the Central Andes permits a good understanding of the overall spatial and temporal variations of rotations. Mesozoic to Early Paleogene rocks along the forearc of northern Chile (23°-28°S) record significant clockwise rotations (>25°) [Arriagada et al., 2006, Tectonics, doi:10.1029/2005TC001923]. Along the forearc of southern Peru, counterclockwise rotations recorded within flat lying red-beds (Moquegua Formation) increase from about -30° at 17.5°S to - 45° at15.5°S and decrease through time from the late Eocene to the late Oligocene-early Miocene [Roperch et al., 2006, Tectonics, doi:10.1029/2005TC001882]. Recently published thermo-chronological studies show evidence for strong exhumation within Bolivian Eastern Cordillera and the Puna plateau starting in the Eocene while structural studies indicate that the majority of crustal shortening in the Eastern Cordillera occurred during the Eocene-Oligocene, although the final stages of deformation may have continued through the Early Miocene. Rotations in the Peruvian and north Chilean forearc thus occurred at the same time than deformation and exhumation/uplift within the Eastern Cordillera. In contrast Neogene forearc rocks in southern Peru and northern Chile do not show evidences of rotation but low magnitude (10°) counterclockwise rotations are usually found in mid to late Miocene rocks from the northern Altiplano. These Neogene rotations are concomitant with shortening in the Sub-Andean zone and sinistral strike-slip faulting along the eastern edge of the northern Altiplano. We interpret the rotation pattern along the southern Peru and north Chile forearc as a result of strong late Eocene- late Oligocene oroclinal bending of the Central Andes associated with shortening gradients along the Eastern Cordillera associated both with the Abancay deflection and the Arica bend. The amount and spatial distribution of pre-Neogene shortening needed to account for

  13. Tectonic and unroofing history of Neogene Manantiales foreland basin deposits, Cordillera Frontal (32°30'S), San Juan Province, Argentina

    Science.gov (United States)

    Pérez, Daniel J.

    2001-12-01

    The Miocene Manantiales foreland basin is located in Cordillera Frontal of San Juan, between 32°30' and 33°S. The unroofing study of the synorogenic Miocene deposits provides information about the structural evolution of Cordón de La Ramada fold-and-thrust belt. These Tertiary deposits are represented by the Chinches Formation and comprise seven members (Tc0-Tc6). They are the result of the uplift of Mesozoic sequences that crop out in La Ramada fold-and-thrust belt of the Cordillera Principal. Quaternary deposits unconformably overlying the Chinches Formation are composed of granitic and rhyolitic blocks, and represent the final uplift of the Cordón del Espinacito and a series of out-of-sequence thrusts. The unroofing studies also provide sufficient information to establish the out-of-sequence timing of the deformation at this latitude. Initial deposition of the Tertiary deposits can be dated at about 20 Ma, or early Miocene. Andesitic lavas dated in 9.2±0.3, 10.7±0.7, and 12.7±0.7 Ma unconformably overlie the structure of La Ramada fold-and-thrust belt. These facts constrain the uplift of the High Andes between 20 and 10 Ma at this latitude. The unconformity between Tertiary and Quaternary deposits suggests final uplift during Pliocene-Pleistocene times.

  14. Active landsliding and landscape denudation in response to transient tectonic uplift, Northern California.

    Science.gov (United States)

    Bennett, G. L.; Roering, J. J.; Miller, S. R.; Kirby, E.; Schmidt, D. A.

    2014-12-01

    The northern Californian Coast ranges present a unique area to study landscape response to transient tectonic uplift. Studies have shown that an increase in uplift may be balanced by the rate of landsliding in settings of steady uplift. However, the landsliding response to transient tectonic uplift remains to be elucidated. The Californian Coast ranges are shaped by the northward migration of the Mendocino Triple Junction (MTJ), which geodynamic modeling suggests produces a transient double-humped uplift field. A major research question is whether we can detect a signature of this transient tectonic uplift in landslide activity and document how the channel network communicates this signal to hillslopes. Using air photos and Worldview imagery, we manually mapped more than 2000 earthflows and debris slides in the Eel and surrounding catchments that span the ~400 km-long region. The velocities of active earthflows were estimated by visually tracking features between images spanning 1993 to 2013. We mapped channel steepness from 10m NED DEMs in Topotoolbox 2 and developed a new tool to automatically define knickpoints along the channel network. Earthflows occur almost exclusively in a band of Franciscan mélange oriented along the MTJ transect whilst debris slides are more evenly distributed by lithology. Both earthflows and debris slides are clustered in the Eel catchment around the proposed uplift peaks and are largely absent outside of these zones. Within these areas of high landslide densities, we observe peaks in active earthflows adjacent to peaks in dormant earthflows to the south, suggesting that the signature of earthflow activity remains for a period of time once the uplift peak has passed. Landslide density, mean landslide area, and earthflow velocity all increase rapidly above threshold values of channel steepness and local relief. In the Eel catchment, where the zone of rapid uplift is commencing, landslides, particularly earth flows, are concentrated

  15. The History of City and Lost:Appreciating the Architectural Pieces by Rafael Moneo%城市与失落的历史——拉菲尔·莫尼奥的建筑赏析

    Institute of Scientific and Technical Information of China (English)

    陈静

    2010-01-01

    @@ 拉菲尔·莫尼奥(Jos?Rafael Moneo Vall?s)1937年五月生于西班牙东北部纳瓦拉省的图德拉(Tudela,Navarra),1961年马德里建筑学院(Madrid University School of Architecture;Escuela de Arquitectura in Madrid)毕业.

  16. Laptop, andamiaje para la Educación Especial. Guía práctica, computadoras móviles en el currículo. Roxana Elizabeth Castellano y Rafael Sanchez Montoya.

    Directory of Open Access Journals (Sweden)

    Guisen, Andrea

    2013-06-01

    Full Text Available Roxana E. Castellano y Rafael Sánchez Montoya delinean un camino que profundiza en el contexto de las computadoras y el aprendizaje de niños con discapacidad, incluyendo el desarrollo cognitivo y modelos de inteligencias múltiples, y la necesaria institucionalización del Paradigma de la Inclusión.

  17. Late Cretaceous fluvial systems and inferred tectonic history, central Utah

    Energy Technology Data Exchange (ETDEWEB)

    Lawton, T.F.

    1983-08-01

    Upper Campanian nonmarine sedimentary rocks exposed between the Wasatch Plateau and the Green River in central Utah record a tectonic transition from thin-skinned deformation in the thrust belt to basement-cored uplift in the foreland region. Sandstones within the section consist of two distinct compositional suites, a lower quartzose petrofacies and an upper lithic petrofacies. The volcanic lithic grains of the Farrer and Tuscher Formations were derived from more distal arc sources to the southwest, and transported through the thrust belt somewhere west of the Kaiparowits region, where time-equivalent sedimentary rocks are also rich in volcanic lithic fragments. Disappearance of volcanic lithics and appearance of pebbles at the top of the Tuscher Formation is interpreted to reflect a latest Campanian reorganization of drainage patterns that marked initial growth of the San Rafael swell and similar basement uplifts to the south of the swell. Contemporaneous fluvial systems that deposited the uppermost part of the Price River Formation in the Wasatch Plateau were apparently unaffected by the uplift and continued to flow northeast. Depositional patterns thus indicate that initial growth of the San Rafael swell was probably concurrent with late deformation in the thrust belt. Depositional onlap across the Mesaverde Group by a largely post-tectonic assemblage of fluvial and lacustrine strata (North Horn Formation) indicates a minimum late Paleocene age for growth of the San Rafael swell and deformation within the thrust belt.

  18. Relationship model of sediment grain size and Tibetan Plateau uplift in middle-west parts of Qilian Mountain

    Institute of Scientific and Technical Information of China (English)

    傅开道; 李吉均; 高军平; 方小敏

    2001-01-01

    By observing, measuring the fluvial sediment grain size of mid-western segment of the Qilianshan Range and studying the correlation between the grain size and uplift of the plateau, we model the correlation. These models are applied to the Laojunmiao section and the process curve of the uplift of the northern Tibetan Plateau against age from 8.35 Ma is illustrated here. The process curve shows that the northern Tibetan Plateau surface has uplifted from the mean altitude of 900-3700 m since 8.35 MaBP. From 8.35 to 3.1 MaBP, the Tibetan Plateau uplifted slowly, uplifted amplitude is small, the total range is 420 m. From 3.1 MaBP up to now, the Tibetan Plateau uplifted tempestuously, showing that the uplift accelerated obviously later. It uplifted totally 2400 m. About 0.9 Ma ago, the northern Tibetan Plateau surface had uplifted to over 3000 m a.s.l., showing that the Tibetan Plateau surface had reached the cryosphere; and the mountain peaks had uplifted to more than 4000 m altitude, suggesting that there

  19. Coral Paleo-Uplift History Overlying a Very Shallow AD 2007 Megathrust Rupture of the Western Solomons Forearc: Deficit of Interseismic Subsidence Results in Net Long-Term Uplift

    Science.gov (United States)

    Taylor, F. W.; Thirumalai, K.; Lavier, L. L.; Frohlich, C.; Shen, C.; WU, C.; Sun, H.; Papabatu, A. K.

    2013-12-01

    The processes of forearc deformation and their relation to the megathrust earthquake cycle provide critical insights regarding longer-term arc tectonic evolution and the earthquake cycle itself. At the Western Solomon Islands arc, Ranongga and other islands sit over the seismogenic megathrust as close as 4 km from the trench where the Australian plate converges at ~80-100 mm/yr. Coral reefs fringe the coasts and record the relative sea level changes accompanying both long-term tectonic uplift and the shorter-term earthquake cycle. The AD 2007 Mw 8.1 megathrust rupture zone dips from 1-2 km to ~25 km deep beneath islands and caused uplift that we measured at coasts along a profile normal to the arc trend. Vertical components of the 2007 displacement show the expected fairly smooth uplift profile typical of elastic strain release. In contrast, along the same profile the amounts of longer-term net uplift of the mid-Holocene (~6 ka) coral shoreline are more variable. Likewise, the elevations of individual coral paleo-shorelines recording a series of individual uplifts (as young as 600 yr old with ~2.25 m uplift) also indicate variable amounts of uplift along the profile when compared to the 2007 coseismic uplift. For 50 -100 yr before 2007, all sites along the same profile subsided at rates on the order of 1-3 cm/yr, all of which equaled or exceeded the upward growth rates of corals. However, the amounts of pre-2007 subsidence are highly variable along the profile and do not conform well to the smoother profile of the 2007 displacements. Where total uplift since the mid-Holocene is smaller, pre-2007 subsidence and 2007 uplift may be relatively large. Where total uplift since the mid-Holocene is larger, 2007 coseismic uplift may be large while pre-2007 subsidence is relatively small. Therefore, the differences in longer-term uplift rates appear tied to variable subsidence during the interseismic period rather than being primarily a coseismic phenomenon. Furthermore

  20. Observations and modeling of post-midnight uplifts near the magnetic equator

    Directory of Open Access Journals (Sweden)

    M. J. Nicolls

    2006-07-01

    Full Text Available We report here on post-midnight uplifts near the magnetic equator. We present observational evidence from digital ionosondes in Brazil, a digisonde in Peru, and other measurements at the Jicamarca Radio Observatory that show that these uplifts occur fairly regularly in the post-midnight period, raising the ionosphere by tens of kilometers in the most mild events and by over a hundred kilometers in the most severe events. We show that in general the uplifts are not the result of a zonal electric field reversal, and demonstrate instead that the uplifts occur as the ionospheric response to a decreasing westward electric field in conjunction with sufficient recombination and plasma flux. The decreasing westward electric field may be caused by a change in the wind system related to the midnight pressure bulge, which is associated with the midnight temperature maximum. In order to agree with observations from Jicamarca and Palmas, Brazil, it is shown that there must exist sufficient horizontal plasma flux associated with the pressure bulge. In addition, we show that the uplifts may be correlated with a secondary maximum in the spread-F occurrence rate in the post-midnight period. The uplifts are strongly seasonally dependent, presumably according to the seasonal dependence of the midnight pressure bulge, which leads to the necessary small westward field in the post-midnight period during certain seasons. We also discuss the enhancement of the uplifts associated with increased geomagnetic activity, which may be related to disturbance dynamo winds. Finally, we show that it is possible using simple numerical techniques to estimate the horizontal plasma flux and the vertical drift velocity from electron density measurements in the post-midnight period.

  1. Crustal reflection structure in the uplifting zone of Songliao Basin and disconnecting Moho interface

    Institute of Scientific and Technical Information of China (English)

    YANG; Baojun; TANG; Jianren; LI; Qinxue; WANG; Jianmin; S.

    2004-01-01

    In order to obtain the fine structure of Songliao Basin, four nearly vertical reflection profiles were acquired and then processed so as to get the poststack migration sections with two-way travel of 15s. In this paper, we study the reflection characteristics in the southeastern and northeastern uplifting zones of Songliao Basin, discovering that the structure within the uplifting zones has the following features: (i) The sedimentary thickness decreases from west to east and increases from north to south. (ii) In the northeastern and southeastern uplifting zones, the crustal reflection image varies remarkably along east-west or south-north direction. (iii) In the northeastern uplifting zone, the two-way travel time of Moho interface ranges within 9.6-11.0 s (the depth range of 30-34 km). (iv) In the southeastern uplift, the two-way travel time of Moho interface ranges within 9.7-10.4 s (the depth range of 30-32 km). The poststack migration sections manifest the peculiar phenomenon of the disconnecting Moho reflection phases in Songliao Basin with two-way travel time difference of 0.1-0.5 s (2 km or so). In the vicinity of disconnecting zone, there are several shear faults, which are wide within the uplifting zone and become narrow at the intersection of two uplifting zones. It can be inferred that these reflection images and peculiar reflections from Moho interface are attributed to the coupling of the following dynamic factors: multi-phase weak collision of Heilongjiang micro-continents, westward underthrusting of Pacific plate and so on.

  2. 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...

  3. 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...

  4. 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...

  5. 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...

  6. 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...

  7. 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,...

  8. 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...

  9. A case of rapid rock riverbed incision in a coseismic uplift reach and its implications

    Science.gov (United States)

    Huang, Ming-Wan; Pan, Yii-Wen; Liao, Jyh-Jong

    2013-02-01

    During the 1999 Chi-Chi earthquake (Mw = 7.6) in Taiwan, the coseismic displacement induced fault scarps and a pop-up structure in the Taan River. The fault scarps across the river experienced maximum vertical slip of 10 m, which disturbed the dynamic equilibrium of the fluvial system. As a result, rapid incision in the weak bedrock, with a maximum depth of 20 m, was activated within a decade after its armor layer was removed. This case provides an excellent opportunity for closely tracking and recording the progressive evolution of river morphology that is subjected to coseismic uplift. Based on multistaged orthophotographs and digital elevation model (DEM) data, the process of morphology evolution in the uplift reach was divided into four consecutive stages. Plucking is the dominant mechanism of bedrock erosion associated with channel incision and knickpoint migration. The astonishingly high rate of knickpoint retreat (KPR), as rapid as a few hundred meters per year, may be responsible for the rapid incision in the main channel. The reasons for the high rate of KPR are discussed in depth. The total length of the river affected by the coseismic uplift is 5 km: 1 km in the uplift reach and 4 km in the downstream reach. The downstream reach was affected by a reduction in sediment supply and increase in stream power. The KPR cut through the uplift reach within roughly a decade; further significant flooding in the future will mainly cause widening instead of deepening of the channel.

  10. GPS measurements of crustal uplift near Jakobshavn Isbræ due to glacial ice mass loss

    DEFF Research Database (Denmark)

    Khan, Shfaqat Abbas; Liu, Lin; Wahr, John;

    2010-01-01

    Isbræ. All stations experienced uplift, but the uplift rate at Kangia North, only 5 km from the glacier front, was about 10 mm yr−1 larger than the rate at Ilulissat, located only ∼45 km further away. This suggests that most of the uplift is due to the unloading of the Earth’s surface as Jakobshavn...... thins and loses mass. Our estimate of Jakobshavn’s contribution to uplift rates at Kangia North and Ilulissat are 14.6 ± 1.7 mm yr−1 and 4.9 ± 1.1 mm yr−1, respectively. The observed rates are consistent with a glacier thinning model based on repeat altimeter surveys from NASA’s Airborne Topographic...... Mapper (ATM), which shows that Jakobshavn lost mass at an average rate of 22 ± 2 km3 yr−1 between 2006 and 2009. At Kangia North and Ilulissat, the predicted uplift rates computed using thinning estimates from the ATM laser altimetry are 12.1 ± 0.9 mm yr−1 and 3.2 ± 0.3 mm yr−1, respectively...

  11. 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...

  12. A Rafael Maya

    Directory of Open Access Journals (Sweden)

    Armando Romero Lozano

    1966-06-01

    Full Text Available En el Viaje del Parnaso, el maestro supremo de nuestro idioma castellano, Miguel de Cervantes, se excede en afectuosa generosidad con hombres de letras que difícilmente se recordarían sin esa mención y loa, trenzada en ágiles tercetos. Acoge así el manco sano entre los militantes del bando apolíneo, con "mano rota y largo de mercedes" a un modesto Juan de Meztanza.

  13. 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.

  14. Anomalous transient uplift observed at the Lop Nor, China nuclear test site using satellite radar interferometry time-series analysis

    Science.gov (United States)

    Vincent, P.; Buckley, S. M.; Yang, D.; Carle, S. F.

    2011-12-01

    Anomalous uplift is observed at the Lop Nor, China nuclear test site using ERS satellite SAR data. Using an InSAR time-series analysis method, we show that an increase in absolute uplift with time is observed between 1997 and 1999. The signal is collocated with past underground nuclear tests. Due to the collocation in space with past underground tests we postulate a nuclear test-related hydrothermal source for the uplift signal. A possible mechanism is presented that can account for the observed transient uplift and is consistent with documented thermal regimes associated with underground nuclear tests conducted at the Nevada National Security Site (NNSS) (formerly the Nevada Test Site).

  15. Numerical investigation of underground drain radius, depth and location on uplift pressure reduction (Case study: Tabriz diversion dam

    Directory of Open Access Journals (Sweden)

    Farzin Salmasi

    2016-06-01

    Full Text Available Water penetration from beneath of built structures on permeable soils causes uplift force along the contact of structure with foundation. This uplift force reduces hydraulic structure stability. Typically, these instabilities occur due to under-pressure development (uplift force, gradual inner degradation of foundation material (piping or sand boil phenomenon. Thus, it seems necessary to calculate the pressure applied to the contact surface of the dam. One method for preventing piping phenomenon, reduction in exit gradient as well as decrease of uplift force beneath diversion dams includes implementation of weep hole. This study aims to study the effect of radius, depth and location of pipe drains under stilling basin upon how much uplift force decreases. The benefit of this study in agricultural field for soil and water engineers is to have a safe design of lined canals, weirs or diversion dams. To do this, numerical simulation of Tabriz diversion dam with Geo-Studio software was carried out. Results showed that application of drain pipe under the structure reduced uplift force respect to without drain under the structure. Increasing of drain radius; caused reduction of uplift pressure more but increased of seepage flow slightly. Installation of drain in upper part of stilling basin had a tendency to decrease uplift pressure more. Existence of drain near the stilling basin bottom caused in more reducing of uplift pressure than of installation of it in deeper depth

  16. Abrupt uplift of Tibetan Plateau at the end of early Pleistocene and Australasian impact event

    Institute of Scientific and Technical Information of China (English)

    REN Shoumai; LIU Yongjiang; GE Xiaohong

    2009-01-01

    The latest sharp uplift of the Tibetan Plateau and adjacent mountains occurred at the end of the early Pleistocene. The uplift of the Plateau resulted from Late Mesozoic- -Cenozoic compressional structure due to the subduction of the Indian Plate beneath the Asian continent. This event definitively effected the formation of basin-mountain relief, Cenozoic basin deformation, large scale aridity and desertification of western China. The Australasian meteorites impact event happened ca. 0.8 Ma ago, located in the triangle area of the Indian Ocean ridge (20°S/67°E). The impact may have resulted in an acceleration of speeding of the Indian Ocean ridge pushing the Indian Plate to subduct rapidly northward. Thus, the impact event can give reasonable explanation for the dynamic background of the latest rapid uplift of the Tibetan Plateau and the continental deformation of western China and even of the Middle Asia.

  17. The active southwest margin of the Colorado Plateau: uplift of mantle origin

    Science.gov (United States)

    Parsons, T.; McCarthy, J.

    1995-01-01

    During Cenozoic time, the Colorado Plateau was raised about 2km above sea level. The most-recent and best-documented uplift of the plateau (~1km) has been concentrated at its southwest margin between 6 and 1 Ma, whereas the eastern Colorado Plateau may have been at high elevations since Eocene time. To better understand the recent tectonic activity at the southwest margin of the Colorado Plateau, we compile detailed crustal thickness and density information from seismic and gravity data for a region that includes northwest Arizona and the southern tip of Nevada. This information is used to isolate the mantle contribution to uplift. We speculate that uplift may result from subduction-related thinning of the continental lithosphere. -from Authors

  18. Nonlinear dynamic analysis of multi-base seismically isolated structures with uplift potential I: formulation

    Institute of Scientific and Technical Information of China (English)

    Panos C. Tsopelas; Panayiotis C. Roussis; Michael C. Constantinou

    2009-01-01

    The complexity of modern seismically isolated structures requires the analysis of the structural system and the isolation system in its entirety and the ability to capture potential discontinuous phenomena such as isolator uplift and their effects on the superstructures and the isolation hardware. In this paper, an analytical model is developed and a computational algorithm is formulated to analyze complex seismically isolated superstructures even when undergoing highly-nonlinear phenomena such as uplift. The computational model has the capability of modeling various types of isolation devices with strong nonlinearities, analyzing multiple superstructures (up to five separate superstructures) on multiple bases (up to five bases), and capturing the effects of lateral loads on bearing axial forces, including bearing uplift. The model developed herein has been utilized to form the software platform 3D-BASIS-ME-MB, which provides the practicing engineering community with a versatile tool for analysis and design of complex structures with modem isolation systems.

  19. Neogene uplift of south Western Australia as constrained by river profiles

    CERN Document Server

    Barnett-Moore, Nicholas; Flament, Nicolas; Butterworth, Nathaniel; Müller, R Dietmar

    2013-01-01

    The relative tectonic quiescence of the Australian continent during the Cenozoicmakes it an excellent natural laboratory to study recent large-scale variations insurface topography and the processes influencing these changes. A part of this landscape is a fluvial network that is sensitive to variations in landscape horizontaland vertical motions. The notion that a river acts as a "tape recorder" for vertical perturbations (Pritchard et al., 2009) suggests that one can deduce changes in spatial and temporal characteristics of uplift via the analysis of river "channel-parallel", or longitudinal, profiles. Here we analysed 21 longitudinal river profiles, around the Australian continent. Steady-state concave upward profiles in northeast Australia indicate an absence of recent uplift. In contrast, pronounced convex upward undulations and major knickpoints within longitudinal profiles of rivers in southwest Australia suggest recent landscape uplift. This requires an explanation given the lackof recent, large-scale ...

  20. Uplift and subsidence reveal a nonpersistent megathrust rupture boundary (Sitkinak Island, Alaska)

    Science.gov (United States)

    Briggs, Richard W.; Engelhart, Simon E.; Nelson, Alan R.; Dura, Tina; Kemp, Andrew C.; Haeussler, Peter J.; Corbett, D. Reide; Angster, Stephen J.; Bradley, Lee-Ann

    2014-01-01

    We report stratigraphic evidence of land-level change and tsunami inundation along the Alaska-Aleutian megathrust during prehistoric and historical earthquakes west of Kodiak Island. On Sitkinak Island, cores and tidal outcrops fringing a lagoon reveal five sharp lithologic contacts that record coseismic land-level change. Radiocarbon dates, 137Cs profiles, CT scans, and microfossil assemblages are consistent with rapid uplift ca. 290-0, 520-300, and 1050-790 cal yr BP, and subsidence in AD 1964 and ca. 640-510 cal yr BP. Radiocarbon, 137Cs, and 210Pb ages bracketing a sand bed traced 1.5 km inland and evidence for sudden uplift are consistent with Russian accounts of an earthquake and tsunami in AD 1788. The mixed uplift and subsidence record suggests that Sitkinak Island sits above a non-persistent boundary near the southwestern limit of the AD 1964 Mw 9.2 megathrust rupture.

  1. A numerical modelling study on the processes of uplift and planation of the Tibetan Plateau

    Institute of Scientific and Technical Information of China (English)

    董文杰; 汤懋苍

    1997-01-01

    The Tibetan Plateau has experienced a number of processes of uplift and planation alternately since about 45 Ma B. P. when it began to raise. A differential equation model for describing the Plateau altitude variation with time is formulated on the basis of previous field studies and a theoretical hypothesis: if palaeomagnetic polarity is positive, the convective activity in the earth is strong; orogenic movement is violent; and the raising velocity of the Plateau is high and vice versa . The analytical solution of the equation is obtained. The altitude variation from the beginning of the Plateau uplift to present is computed through using the geomagnetic polarity reversals timing series and interstellar atomic hydrogen concentration data. A comparison between the model results and the field studies indicates that the former is quite similar to the latter. The model results are able to basically reproduce the alternating processes of uplift and planation of the plate geological history. In the present m

  2. Surface uplift in the Central Andes driven by growth of the Altiplano Puna Magma Body

    Science.gov (United States)

    Perkins, Jonathan P.; Ward, Kevin M.; de Silva, Shanaka L.; Zandt, George; Beck, Susan L.; Finnegan, Noah J.

    2016-10-01

    The Altiplano-Puna Magma Body (APMB) in the Central Andes is the largest imaged magma reservoir on Earth, and is located within the second highest orogenic plateau on Earth, the Altiplano-Puna. Although the APMB is a first-order geologic feature similar to the Sierra Nevada batholith, its role in the surface uplift history of the Central Andes remains uncertain. Here we show that a long-wavelength topographic dome overlies the seismically measured extent of the APMB, and gravity data suggest that the uplift is isostatically compensated. Isostatic modelling of the magmatic contribution to dome growth yields melt volumes comparable to those estimated from tomography, and suggests that the APMB growth rate exceeds the peak Cretaceous magmatic flare-up in the Sierran batholith. Our analysis reveals that magmatic addition may provide a contribution to surface uplift on par with lithospheric removal, and illustrates that surface topography may help constrain the magnitude of pluton-scale melt production.

  3. New constraints on Holocene uplift rates for the Baudo Mountain Range, northwestern Colombia

    Science.gov (United States)

    González, Juan L.; Shen, Zhixiong; Mauz, Barbara

    2014-07-01

    A beach deposit on the southern end of the Baudo Mountain Range, at an elevation of ˜2.0 m above the backshore of the modern beach, was dated at ˜2870 years using optically stimulated luminescence dating. The calculated average uplift rate necessary to raise this deposit is 0.7 mm/yr. This rate combines the long-term regional deformation associated with the subduction of the Nazca Plate under the South American Plate and the collision of the Choco Block microplate against the South American continent, as well as uplift from local faults. We propose that rapid emergence probably as several pulses, each involving decimeter scale coseismic uplift, is likely to have occurred to elevate the beach above the intertidal zone and offset destructive wave erosion.

  4. La Mara, la historia interminable: La migración centroamericana en el relato neopolicial de Rafael Ramírez Heredia

    OpenAIRE

    Jaime Alberto Galgani

    2009-01-01

    La Mará es una de las obras de Rafael Ramírez Heredia que ¡ncursiona en el relato neopolicial latinoamericano. El presente artículo intenta verificar cómo el autor se apropia del género incorporando sus características particulares y llevando a la novela una de las problemáticas más graves, asociadas al fenómeno de la emigración en la frontera entre México y Guatemala, en donde confluyen aspectos relacionados con la violencia, el tráfico de drogas, la prostitución y la presencia de la Mará Sa...

  5. Uplift of Symmetrical Anchor Plates by Using Grid-Fixed Reinforced Reinforcement in Cohesionless Soil

    Institute of Scientific and Technical Information of China (English)

    Hamed Niroumand; Khairul Anuar Kassim

    2014-01-01

    Uplift response of symmetrical anchor plates with and without grid fixed reinforced (GFR) reinforcement was evaluated in model tests and numerical simulations by Plaxis. Many variations of reinforcement layers were used to reinforce the sandy soil over symmetrical anchor plates. In the current research, different factors such as relative density of sand, embedment ratios, and various GFR parameters including size, number of layers, and the proximity of the layer to the symmetrical anchor plate were investigated in a scale model. The failure mechanism and the associated rupture surface were observed and evaluated. GFR, a tied up system made of fiber reinforcement polymer (FRP) strips and end balls, was connected to the geosynthetic material and anchored into the soil. Test results showed that using GFR reinforcement significantly improved the uplift capacity of anchor plates. It was found that the inclusion of one layer of GFR, which rested directly on the top of the anchor plate, was more effective in enhancing the anchor capacity itself than other methods. It was found that by including GFR the uplift response was improved by 29%. Multi layers of GFR proved more effective in enhancing the uplift capacity than a single GFR reinforcement. This is due to the additional anchorage provided by the GFR at each level of reinforcement. In general, the results show that the uplift capacity of symmetrical anchor plates in loose and dense sand can be significantly increased by the inclusion of GFR. It was also observed that the inclusion of GFR reduced the requirement for a large L/D ratio to achieve the required uplift capacity. The laboratory and numerical analysis results are found to be in agreement in terms of breakout factor and failure mechanism pattern.

  6. Ice cap melting and low viscosity crustal root explain narrow geodetic uplift of the Western Alps

    Science.gov (United States)

    Chery, Jean; Genti, Manon; Vernant, Philippe

    2016-04-01

    More than 10 years of geodetic measurements demonstrate an uplift rate of 1-3 mm/yr of the high topography region of the Western Alps. By contrast, no significant horizontal motion has been detected. Three uplift mechanisms have been proposed so far: (1) the isostatic response to denudation. However this process is responsible for only a fraction of the observed uplift and (2) the rebound induced by the Wurmian ice cap melting. This process leads to a broader uplifting region than the one evidenced by geodetic observations. (3) a deep source motion associated with slab motion or some deep isostatic unbalance. Using a numerical model accounting for crustal and mantle rheology of the Alps and its foreland, we model the response to Wurmian ice cap melting. We show that a crustal viscosity contrast between the foreland and the central part of the Alps, the later being weaker with a viscosity of 1021 Pa.s, is needed to produce a narrow uplift. The vertical rates are enhanced if the strong uppermost mantle beneath the Moho is interrupted across the Alps, therefore allowing a weak vertical rheological anomaly thanks to the continuity between the low viscosity parts of the crust and mantle. References: Champagnac, J.-D., F. Schlunegger, K. Norton, F. von Blanckenburg, L. M. Abbühl, and M. Schwab (2009), Erosion-driven uplift of the modern Central Alps, Tectonophysics, 474(1-2), 236-249. Vernant, P., F. Hivert, J. Chéry, P. Steer, R. Cattin, and A. Rigo (2013), Erosion-induced isostatic rebound triggers extension in low convergent mountain ranges, geology, 41(4), 467-470.

  7. Percepción del riesgo en gestantes adolescentes del Policlínico “Rafael Valdés”, año 2009.

    Directory of Open Access Journals (Sweden)

    Melissa Serra Ruíz

    2011-11-01

    Full Text Available Fundamento: el embarazo en la adolescencia se asocia a mayores riesgos médicos, problemas psicológicos y desventajas sociales. Las adolescentes, han demostrado desconocimiento acerca de los riesgos de un embarazo a esta edad. Objetivo: identificar la precepción de riesgo en embarazadas adolescentes del policlínico “Rafael Valdés”. Método: estudio descriptivo, prospectivo de las 79 embarazadas adolescentes del Policlínico “Rafael Valdés”, del Cotorro, La Habana, del 1 1ro de enero al 31 de diciembre de 2009. Las variables analizadas fueron: edad, nivel de escolaridad, estado de los estudios, edad del coito y estado civil, tomadas por entrevista directa, además de la aplicación de una encuesta para valorar la percepción de riesgo del grupo. Los datos se procesaron en Excel, determinando frecuencias y porcentajes. Resultados: el 89,9 % tenían de 15-19 años, 91,5 % entre solteras o con relación de pareja inestable y 74,4 % habían iniciado la actividad coital después de 15 años. Habían abandonado los estudios, 49,9 % de las adolescentes. La mayoría refirió tener conocimientos sobre anticoncepción, sexualidad, riesgos del embarazo, tenían apoyo familiar y se captaron el embarazo precozmente aunque no hubo correspondencia con las razones expuestas para continuar el embarazo. Conclusión: el proceso de educación y orientación de los adolescentes en temas de sexualidad y salud reproductiva debe ser sistemático además de considerarse nuestra responsabilidad.

  8. Timectomía por miastenia gravis en el Hospital Dr. Rafael Angel Calderón Guardia: Reporte de 24 casos

    Directory of Open Access Journals (Sweden)

    José A Mainieri Hidalgo

    2000-06-01

    Full Text Available Antecedentes: La miastenia gravis es una enfermedad autoinmune cuya etiología aún no está claramente definida. Desde 1912 se describió mejoría del cuadro posterior a timectomía. Este procedimiento es actualmente una de las formas aceptadas para su tratamiento. El objetivo del presente trabajo fue estudiar los resultados de la timectomía para el tratamiento de la miastenia gravis en el Hospital Rafael Angel Calderón Guardia. Materiales y Métodos: Estudio retrospectivo, basado en la revisión de los expedientes de 24 pacientes, a quienes se les realizó timectomía como parte de su tratamiento de miastenia gravis entre enero de 1992 y mayo de 1999, en el Hospital Dr. Rafael Angel Calderón Guardia. Resultados: Se encontró que un 75% de los pacientes presentaron una franca mejoría, 17% permaneció en igual condición y un 8% empeoró. No se observó diferencia en la evolución por sexo, edad o la presencia de timoma, sin embargo en los pacientes que presentaban únicamente síntomas oculares se dio una tendencia a persistir sintomáticos. Se observó que la preparación pre-operatoria del paciente con gamaglobulina y la modernización de la técnica anestésica disminuyó notablemente la necesidad de ventilación mecánica. Conclusión: La timectomía fue útil en el tratamiento del 75% de los pacientes, especialmente aquellos con no sólo ptosis palpebral y permitió disminuir la dosis de medicamentos en 12 de los 24 casos estudiados.

  9. The role of uplift and erosion in the persistence of saline groundwater in the shallow subsurface

    Science.gov (United States)

    Yager, R. M.; McCoy, K. J.; Voss, C. I.; Sanford, W. E.; Winston, R. B.

    2017-04-01

    In many regions of the world, the shallow (top 1 km of a sedimentary foreland basin dominated by aquitards, where the rate of uplift and erosion (20 m Ma-1) balances that of meteoric flushing. Paleozoic age saline groundwater and brine persist at shallow depths that might otherwise have contained potable water. Similar hydrogeologic conditions, and uplift and erosion rates, likely exist in many other regions of the world, where a moving landscape has probably never been considered as an important contributor to groundwater quality.

  10. The flux-scaling scenario. De Sitter uplift and axion inflation

    Energy Technology Data Exchange (ETDEWEB)

    Blumenhagen, Ralph; Damian, Cesar; Herschmann, Daniela; Sun, Rui [Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut), Muenchen (Germany); Font, Anamaria [Departamento de Fisica, Centro de Fisica Teorica y Computacional, Facultad de Ciencias, Universidad Central de Venezuela, Caracas (Venezuela, Bolivarian Republic of)

    2016-06-15

    Non-geometric flux-scaling vacua provide promising starting points to realize axion monodromy inflation via the F-term scalar potential. We show that these vacua can be uplifted to Minkowski and de Sitter by adding an D3-brane or a D-term containing geometric and non-geometric fluxes. These uplifted non-supersymmetric models are analyzed with respect to their potential to realize axion monodromy inflation self-consistently. Admitting rational values of the fluxes, we construct examples with the required hierarchy of mass scales. (copyright 2016 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  11. Coastal uplift and mortality of intertidal organisms caused by the september 1985 Mexico earthquakes.

    Science.gov (United States)

    Bodin, P; Klinger, T

    1986-09-05

    Coastal uplift associated with the great Mexican earthquake of 19 September 1985 and its principal aftershock produced widespread mortality of intertidal organisms along the coast of the states of Michoacán and Guerrero, Mexico. Measurements of the vertical extent of mortality at ten sites provided estimates of the magnitude of the vertical component of deformation along the coast. Within the affected area, uplift ranged from about 12 centimeters to about 1 meter, and no subsidence was observed. The observations are consistent with models of the tectonic deformation that results from buried slip on a shallow-dipping underthrust fault.

  12. Geomechanical modeling of surface uplift around well KB-502 at the in Salah CO2 storage site

    NARCIS (Netherlands)

    Fokker, P.A.; Orlic, B.; Meer, L.G.H. van der; Geel, C.R.

    2011-01-01

    Injection of CO2 in the InSalah field has caused uplift of the surface, as observed by satellite geodetic techniques (InSAR). Around one of the wells, KB-502, the uplift shows anomalous behaviour: a two-lobe pattern develops in the direction of the preferred fracture orientation. This indicates the

  13. Geomechanical modeling of surface uplift around well KB-502 at the in Salah CO2 storage site

    NARCIS (Netherlands)

    Fokker, P.A.; Orlic, B.; Meer, L.G.H. van der; Geel, C.R.

    2011-01-01

    Injection of CO2 in the InSalah field has caused uplift of the surface, as observed by satellite geodetic techniques (InSAR). Around one of the wells, KB-502, the uplift shows anomalous behaviour: a two-lobe pattern develops in the direction of the preferred fracture orientation. This indicates the

  14. Surface Response to Regional Uplift of Madagascar Reveals Short Wavelength Dynamic Topography

    Science.gov (United States)

    Stephenson, S.; White, N.

    2016-12-01

    The physiography of Madagascar is characterized by high elevation but low relief topography with 42% of the landscape at an elevation grgeater than 500 m. Eocene marine limestones crop out at an elevation of 400 m, extensive low relief erosion surfaces capped by laterites occur at elevations of up to 2 km, and longitudinal river profiles are disequilibrated. Together, these observations suggest that Madagascar underwent regional uplift in Neogene times. Inverse modeling of drainage networks suggests that regional uplift is diachronous and has occurred on wavelengths of 1000 km. The existence of deeply incised river channels together with low-temperature thermochronologic measurements (i.e. AFT, AHe) implies that erosion occurred in response to regional Neogene uplift. Admittance analysis of long wavelength free-air gravity and topography shows that admittance, Z = 45 ± 5 mGal/km. The history of Neogene volcanism and a lack of significant tectonic shortening both suggest that uplift is dynamically supported. Here we present a suite of U-Th dates of emergent coral reef deposits from northern Madagascar, whose margins are sometimes considered `stable'. Elevation of these coeval coral reefs decreases from 7.2 m at the northern tip of Madagascar to sea level 100 km to the south. The existence of a spatial gradient suggests that differential vertical motions occurred during Late Quaternary times. These results raise significant questions about the reliability both of emergent coral reefs as global sea-level markers and the length-scale of variations in dynamic topography.

  15. Advancement Staff and Alumni Advocates: Cultivating LGBTQ Alumni by Promoting Individual and Community Uplift

    Science.gov (United States)

    Garvey, Jason C.; Drezner, Noah D.

    2013-01-01

    Using a constructivist case-study analysis, we explore philanthropy toward higher education among lesbian, gay, bisexual, transgender, and queer (LGBTQ) alumni, examining the role of advancement staff and alumni advocates in engaging LGBTQ alumni to promote individual and community uplift. Data come from focus groups with 37 advancement staff and…

  16. Cenozoic episodic uplift and kinematic evolution between the Pamir and Southwestern Tien Shan

    Science.gov (United States)

    Liu, Dongliang; Li, Haibing; Sun, Zhiming; Cao, Yong; Wang, Leizhen; Pan, Jiawei; Han, Liang; Ye, Xiaozhou

    2017-08-01

    The Pamir Salient and Southwestern Tien Shan belong to two different systems, which collided due to the continuous northward drift of the Indian Plate during the Cenozoic, resulting in a shortening of 300 km. The uplift history and kinematic evolution of the Pamir-Southwestern Tien Shan remain unclear. In this study, we chose the 2025 m-thick Pakabulake formation in the East Wuqia section, at the southern-most margin of the Southwestern Tien Shan system, to obtain a high-resolution magnetostratigraphic record spanning 16.61 Ma to 9.78 Ma. Based on its high sedimentation rate, stable ca. E-W paleocurrents and stable magnetic susceptibility values, the nearby Southwestern Tien Shan was inferred to have undergone stable uplift during this period of sedimentation. Combining our results with the previous low-temperature thermochronology, magnetostratigraphy and re-calculated block rotations, we conclude that four episodic uplift events occurred in the Pamir-Southwestern Tien Shan during the Cenozoic, at times of 50-40 Ma, 35-16 Ma, 11-7 Ma and < 5 Ma, and that the first episodic uplift only occurred in the Pamir Salient. In addition, the Pamir Salient underwent a tectonic transformation from entire- to a half-oroclinal bending rotation during the Miocene, caused by activity along the Karakorum Fault and Kashgar-Yecheng Transfer System.

  17. VIBRATING-UPLIFT ROCKING MOTION OF CAISSON BREAKWATERS UNDER VARIOUS BREAKING WAVE IMPACT FORCES

    Institute of Scientific and Technical Information of China (English)

    WANG Yuan-zhan; ZHOU Zhi-rong; YANG Hai-dong

    2005-01-01

    Overturning is one of principal failure types of caisson breakwaters and is an essential content of stability examination in caisson breakwater design. The mass-springdashpot model of caisson-foundation system is used to simulate the vibrating-uplift rocking motion of caisson under various types of breaking wave impact forces, i.e., single peak impact force, double peak impact force, and shock-damping oscillation impact force. The effects of various breaking wave types and the uplift rocking motion on dynamic response behaviors of caisson breakwaters are investigated. It is shown that the dynamic responses of a caisson are significantly different under different types of breaking wave impact forces even when the amplitudes of impact forces are equal. Though the rotation of a caisson is larger due to the uplift rocking motion, the displacement, the sliding force and the overturning moment of the caisson are significantly reduced. It provides the theoretical base for the design idea that the uplift rocking motion of caisson is allowed in design.

  18. Rapid bedrock uplift in the Antarctic Peninsula explained by viscoelastic response to recent ice unloading

    DEFF Research Database (Denmark)

    Nield, Grace A.; Barletta, Valentina Roberta; Bordoni, Andrea;

    2014-01-01

    Since 1995 several ice shelves in the Northern Antarctic Peninsula have collapsed and triggered ice-mass unloading, invoking a solid Earth response that has been recorded at continuous GPS (cGPS) stations. A previous attempt to model the observation of rapid uplift following the 2002 breakup of L...

  19. Advancement Staff and Alumni Advocates: Cultivating LGBTQ Alumni by Promoting Individual and Community Uplift

    Science.gov (United States)

    Garvey, Jason C.; Drezner, Noah D.

    2013-01-01

    Using a constructivist case-study analysis, we explore philanthropy toward higher education among lesbian, gay, bisexual, transgender, and queer (LGBTQ) alumni, examining the role of advancement staff and alumni advocates in engaging LGBTQ alumni to promote individual and community uplift. Data come from focus groups with 37 advancement staff and…

  20. Uplift and submarine formation of some Melanesian porphyry copper deposits: Stable isotope evidence

    Science.gov (United States)

    Chivas, A.R.; O'Neil, J.R.; Katchan, G.

    1984-01-01

    Hydrogen and oxygen isotope analyses of sericites and kaolinites from four young porphyry copper deposits (Ok Tedi (1.2 Ma) and Yandera (6.5 Ma), Papua New Guinea; Koloula (1.5 Ma), Solomon Islands; and Waisoi (ocean water. For Ok Tedi, the non-magmatic component was a meteoric water with an isotopic composition different from that of the present meteoric water in the region. The isotopic signature of the former meteoric water is consistent with a surface elevation of 200 m a.s.l. or less at the time of mineralization. The deposit was later exposed and supergene kaolinitization commenced at approximately 1200 m a.s.l. Uplift and erosion has continued to the present at which time the elevation of the exposed deposit is 1800 m a.s.l. This rate of uplift is consistent with that known from other geological evidence. If the rate of uplift were approximately constant during the last 1.2 Ma, the age of supergene enrichment can be dated at approximately 0.4 Ma B.P. Similarly, influx of meteoric water at Yandera occurred when the ground surface above the deposit was at an elevation of approximately 600 m a.s.l. The deposit's present elevation is 1600 m a.s.l. In this case a total uplift of approximately 2.2 km is indicated, with removal of 1.2 km of overburden by erosion. ?? 1984.

  1. Use of GRACE data to detect the present land uplift rate in Fennoscandia

    Science.gov (United States)

    Shafiei Joud, Mehdi S.; Sjöberg, Lars E.; Bagherbandi, Mohammad

    2017-05-01

    After more than 13 yr of GRACE monthly data, the determined secular trend of gravity field variation can be used to study the regions of glacial isostatic adjustment (GIA). Here we focus on Fennoscandia where long-term terrestrial and high-quality GPS data are available, and we study the monthly GRACE data from three analysis centres. We present a new approximate formula to convert the secular trend of the GRACE gravity change to the land uplift rate without making assumptions of the ice load history. The question is whether the GRACE-derived land uplift rate by our method is related to GIA. A suitable post-processing method for the GRACE data is selected based on weighted RMS differences with the GPS data. The study reveals that none of the assumed periodic changes of the GRACE gravity field is significant in the estimation of the secular trend, and they can, therefore, be neglected. Finally, the GRACE-derived land uplift rates are obtained using the selected post-processing method, and they are compared with GPS land uplift rate data. The GPS stations with significant differences were marked using a statistical significance test. The smallest rms difference (1.0 mm a-1) was obtained by using GRACE data from the University of Texas.

  2. Tectono-thermal Evolution in the Bachu Uplift,Tarim Basin,China

    Institute of Scientific and Technical Information of China (English)

    QIU Nansheng; JIANG Guang; MEI Qinghua; WANG Shengjun

    2010-01-01

    The thermal evolution of source rocks in the Paleozoic has long been a problem to petroleum exploration in the Bachu uplift,Tarim basin,since the thermal history in the Paleozoic could not be rebuilt objectively due to lack of effective thermal indicators in the Lower Paleozoic successions.The apatite and zircon(U-Th)/He thermochronometry can be used as a new kind of technique to study the thermal history and tectonic uplift of sedimentary basins.Based on the measured apatite and zircon(U-Th)/He ages,apatite fission track data and equivalence vitrinite reflectance(%EVRo),the tectonothermal histories in 5 wells of the Bachu uplift were modeled.The modeling results show that there was relatively high gradient at the Early Paleozoic in the Bachu uplift and it decreased gradually during the entire Paleozoic: 33-35℃/km in the CambrianOrdovician,32-33℃/km in the Silurian-Devonian,30-32℃/km at the end of Carboniferous and 27.5-31℃/km at the end of Permian.Therefore,the thermal history can be modeled by combining multiple thermal indicators of AFT,(U-Th)/He ages and EVRo data.Especially,this provides a new method to rebuild the thermal history for the Low Paleozoic carbonate successions in the Tarim Basin.

  3. Valley aggradation in the San Gabriel Mountains, California: climate change versus catastrophic landslide

    Science.gov (United States)

    Scherler, D.; Lamb, M. P.; Rhodes, E. J.; Avouac, J. P.

    2014-12-01

    The San Gabriel Mountains (SGM) in Southern California, rate amongst the most rapidly uplifting and eroding mountains in the United States. Their steep slopes and sensitivity to wildfires, flash floods, landslides, and debris flows account for imminent hazards to nearby urban areas that might be accentuated by climatic and other environmental changes. Previous studies suggested that river terraces along the North Fork of the San Gabriel River, record temporal variations in sediment supply and river transport capacity that are representative for the SGM and related to climatic changes during the Quaternary. Based on field observations, digital topographic analysis, and dating of Quaternary deposits, we suggest that valley aggradation in the North Fork San Gabriel Canyon was spatially confined and a consequence of the sudden supply of unconsolidated material to upstream reaches by one of the largest known landslides in the SGM. New 10Be-derived surface exposure ages from the landslide deposits, previously assumed to be early to middle Pleistocene in age, indicate at least three Holocene events at ~8-9 ka, ~4-5 ka, and ~0.5-1 ka. The oldest landslide predates the valley aggradation period, which is constrained by existing 14C ages and new luminescence ages to ~7-8 ka. The spatial distribution, morphology, and sedimentology of the river terraces are consistent with deposition from far-travelling debris flows that originated within the landslide deposits. Valley aggradation in the North Fork San Gabriel Canyon therefore resulted from locally enhanced sediment supply that temporarily overwhelmed river capacity but the lack of similar deposits in other parts of the SGM argues against a regional climatic signal. So far, there exists no evidence that in the San Gabriel Mountains, climatic changes can cause sustained increases in hillslope sediment supply that lead to river aggradation and terrace formation.

  4. 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...

  5. Rapid regional surface uplift of the northern Altiplano plateau revealed by multiproxy paleoclimate reconstruction

    Science.gov (United States)

    Kar, Nandini; Garzione, Carmala N.; Jaramillo, Carlos; Shanahan, Timothy; Carlotto, Victor; Pullen, Alex; Moreno, Federico; Anderson, Veronica; Moreno, Enrique; Eiler, John

    2016-08-01

    The central Altiplano is inferred to have experienced ∼ 2.5 ± 1km surface uplift between ∼10 and 6 Ma, while the southern Altiplano experienced a similar magnitude of surface uplift that began earlier, between ∼16 and 9 Ma. To properly constrain the along strike timing of the Altiplano plateau surface uplift, it is necessary to know how and when the northernmost part of the Altiplano plateau evolved. We reconstruct the paleoclimate and infer the corresponding paleoelevation from the Miocene-Pliocene deposits of the Descanso-Yauri basin (14-15°S) in the northernmost part of the Altiplano plateau using 4 different proxies, including carbonate clumped isotope composition (i.e., Δ47 values), carbonate δ18Oc, leaf wax δDwax and pollen assemblages from paleosol, lacustrine and palustrine carbonates and organic-rich sediments. The isotopic signatures reflect past climate conditions of mean annual air temperature (Δ47) and meteoric water isotope values (δ18Oc, δDwax). Our results show that the northernmost plateau remained at low elevation (0.9 ± 0.8 to 2.1 ± 0.9km) until late Miocene time (∼9 Ma) characterized by ∼15 °C warmer than modern temperature (mean annual air temperature of 23 ± 4 °C, 2σ), low elevation vegetation and precipitation signature with reconstructed □ δ18Omw (VSMOW) of - 8.3 ± 2.0 ‰ (2 σ) from carbonate (δ18Oc) and - 8.6 ± 1.8 ‰ (2 σ) from leaf wax (δDwax). Modern elevations of 4 km were not reached until 5.4 ± 1.0Ma, as indicated by a negative shift in δDwax (VSMOW) from - 143.4 ± 12.8 ‰ (2 σ) to - 209.2 ± 21.1 ‰ (2 σ) between 9.1 ± 0.7 and 5.4 ± 1.0Ma. The timing of surface uplift of the northernmost Altiplano is consistent with the evidence for late Miocene surface uplift of the central Altiplano (16-19°S) between 10 and 6 Ma, and indicates that regional scale uplift in the northern-central plateau significantly postdates the onset of surface uplift in the southern Altiplano (19-22°S) between ∼16

  6. 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...

  7. 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...

  8. 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...

  9. 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...

  10. 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...

  11. 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...

  12. 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...

  13. 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...

  14. 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

  15. Dynamic model of vibrating-sliding-uplift rocking coupled motion and dynamic design method of caisson breakwaters

    Institute of Scientific and Technical Information of China (English)

    WANG; Yuanzhan; HUA; Leina; DONG; Shaowei

    2004-01-01

    Vibrating, sliding and uplift rocking are three elementary motion types of caisson breakwaters. The dynamic model and the numerical simulation method of vibrating-sliding-uplift rocking coupled motion of caisson breakwaters are developed. The histories of displacement, rotation, sliding force and overturning moment of a caisson breakwater under the excitation of breaking wave impact are calculated for the motion models of vibrating, vibrating-sliding, vibrating-uplift rocking and vibrating-sliding-uplift rocking. The effects of various motion models on the stability of caisson breakwaters are investigated. The feasibility of the dynamic design idea that the sliding motion and the uplift rocking motion of caisson breakwaters are allowed under the excitation of breaking wave impact is discussed.

  16. Modeling ground surface uplift during CO2 sequestration: the case of In Salah, Algeria.

    Science.gov (United States)

    Rinaldi, Antonio Pio; Rutqvist, Jonny; Finsterle, Stefan; Liu, Hui-Hai

    2016-04-01

    Observable ground deformation, common in storage projects, carries useful information on processes occurring at the injection depth. The Krechba gas field at In Salah (Algeria) is one of the best known sites for studying ground surface deformation during geological storage. Being the first industrial-scale on-shore CO2 demonstration project, the site is well known for satellite-based ground-deformation monitoring data of remarkable quality. In this work, we carry out coupled fluid flow and geomechanical simulations to understand the uplift at three different CO2 injection wells (KB-501, KB-502, KB-503). Previous numerical studies focused on the KB-502 injection well, where a double-lobe uplift pattern has been observed in the ground-deformation data. The observed uplift patterns at KB-501 and KB-503 are different, but also indicate the influence of deep fracture zone mechanical responses. The current study improves the previous modeling approach by introducing an injection reservoir and a fracture zone, both responding to a Mohr-Coulomb failure criterion. In addition, we model a stress-dependent permeability and bulk modulus, according to a dual continuum model. Mechanical and hydraulic properties were determined through inverse modeling by matching the simulated spatial and temporal evolution of uplift to the corresponding InSAR observations as well as by matching simulated and measured pressures. The numerical simulations are in excellent agreement with observed spatial and temporal variation of ground surface uplift, as well as with measured pressures. The estimated values for the parameterized mechanical and hydraulic properties are in good agreement with previous numerical results, although with uncertainty.

  17. Impact of rock uplift on rates of late Cenozoic Rocky Mountain river incision

    Science.gov (United States)

    Riihimaki, Catherine A.; Anderson, Robert S.; Safran, Elizabeth B.

    2007-09-01

    The high relief of the modern Rocky Mountain landscape formed in the late Cenozoic by downcutting of a fluvial network that links a series of easily eroded sedimentary basins across relatively resistant crystalline cores of adjacent ranges. Using a numerical model of fluvial erosion and the flexural isostatic response to the associated unloading, we first calculate the expected pattern and pace of incision caused by rock uplift related to migration of the Yellowstone hot spot and to growth of the northern portion of the Rio Grande rift. Calculated incision rates are <60 m/Myr, and total depth of erosion of sedimentary basins is <300 m, well below the long-term incision rates and amounts of erosion interpreted from the geologic record. Broad-scale tilting of the region toward the east, accomplished by a gradient in rock uplift of ˜1 km along the north-south axis of the central Rockies, declining to zero 1000 km to the east, can account for the additional erosion needed to match observations. In each modeling scenario, stream incision is nonsteady, with rock uplift outpacing erosion for <1 Myr in perimeter basins and 1-5 Myr in interior basins. Three factors dominate the spatial and temporal pattern of regional landscape evolution: (1) the time since uplift began, (2) the uplift pattern, and (3) the distribution of relatively resistant bedrock within the region. Our results suggest that the spatial variability in late Cenozoic exhumation can be explained by a long-lived transience in the stream network response to these various late Cenozoic geophysical events.

  18. Rock-type control on erosion-induced uplift, eastern Swiss Alps

    Science.gov (United States)

    Korup, Oliver; Schlunegger, Fritz

    2009-02-01

    There is growing evidence that Quaternary rock uplift in parts of the European Alps is a consequence of climate- and erosion-driven isostatic rebound. Contemporary rates of rock uplift U in the Swiss Alps show two distinctive dome-like peak regions that attain ~ 1.6 mm yr - 1 . We focus on the Alpenrhein catchment and its surroundings, where one of these peak regions spatially coincides with widely exposed Cretaceous Bündner schist and lower Tertiary flysch. Field assessments and analyses of hillslope gradient distributions quantitatively demonstrate the low rock-mass strength and high erodibility of these rocks. This is reflected in mean postglacial catchment erosion rates D ~ 4 mm yr - 1 , as opposed to 0.7 mm yr - 1 in more resistant crystalline rocks. Though largely inferred from landslide- and debris-flow prone tributary catchments export, from the region. We further find that the steepness of bedrock rivers, the density of large landslides, and D correlate with the highest values of U. Our observations highlight the possibility that erosion of mechanically weak Bündner schist and flysch enhanced by large landslides may have contributed to regional crustal unloading, and concomitant rock uplift. Irrespective of whether this is betraying a coupling between long-term uplift and erosion modulated by rock type, our findings indicate that long-term (10 3 to 10 4 yr) geomorphic signals contained in bedrock-river steepness, spatial density of large landslides, and postglacial erosion rates strikingly correlate with regional gradients of historic (10 1 yr) rock uplift rates.

  19. Variation in deformational mechanisms in the Banda Arc: Uplift and tectonic implications of Kisar, Indonesia

    Science.gov (United States)

    Major, J. R.; Harris, R. A.; Chiang, H.; Prasetyadi, C.; Shen, C.

    2009-12-01

    Kisar island is an enigmatic feature which reveals anomalous mountain building processes in the forearc basin of the Banda arc-continent collision. The roughly circular uplift rises 3 km from the basin floor to the surface and is surrounded by uplifted coral terraces. The island is near a retrowedge thrust imaged by seismic reflection. Yet, the location, shape, and structures of the island suggest an origin more complex than simple thrusting, such as diapiric activity (i.e. an emergent gneiss dome). Kisar exposes low-grade metasediments with scattered mafic bodies and is similar to the Aileu Fm. on neighboring Timor. Detrital zircon analysis reveals an affinity to Australia’s northern continental margin. The geochemistry of mafic bodies indicates a rift environment, likely related to the breakup of Gondwana. Geothermobarometry and geochronologic data from the Aileu Complex shows the rocks were subducted to a depth of 35 km and have a long-term rock uplift rate calculated at 3-5 mm/yr. However, U-Th series age analyses of uplifted coral terraces on Kisar yield a short-term surface uplift rate of 0.15-0.8 mm/yr. In addition, several loose coral heads found at 10-20m elevation on the south, east, and west coasts yield ages of ~100 years and are likely tsunami deposits from undocumented seismic activity on the Timor trough. These are the first age data from a 400 km stretch of islands between Timor and Tanimbar where the young orogen displays varied deformational mechanisms along strike. Simplified map of southern Banda Arc with Kisar noted.

  20. Hydrocarbon Accumulation and Distribution Characteristics of the Silurian in the Tazhong Uplift of Tarim Basin

    Science.gov (United States)

    LÜ, Xiuxiang; BAI, Zhongkai; ZHAO, Fengyun

    Hydrocarbon accumulation of the Silurian in the Tazhong uplift of Tarim basin is characterized by "two sources and three stages". "Two sources" means that the hydrocarbons are derived from two source rocks of the Cambrian and Middle-Upper Ordovician. "Three stages" means that asphalt and movable oil undergoes three hydrocarbon accumulation stages, i.e., Late Caledonian, Late Hercynian, and Yanshanian-Himalayan. The formation of asphalt resulted from the destruction of the hydrocarbons accumulated and migrated in the early stages. The present movable oil, mostly derived from Middle-Upper Ordovician source rock, resulted from the hydrocarbons accumulated in the late stage. There are three types of reservoirs, i.e., anticline structural, stratigraphic lithological, and lava shield reservoirs in the Tazhong uplift. Hydrocarbon accumulation of the Silurian in the Tazhong uplift is controlled by the three factors. (1) The background of uplift structure. Around the ancient uplift, the compounding of many types makes up the composite hydrocarbon accumulation areas. (2) Effective cover. The show of oil gas including asphalt, heavy crude oil, and normal oil is quite active in the Silurian. Asphalt and heavy crude oil are distributed under the red mudstone member and movable oil is distributed under the gray mudstone member. (3) High quality reservoir bed. Sandstone is distributed widely in the Tazhong area. Reservoir pore space can be divided into three types: a) secondary origin-primary origin pore space; b) primary origin-secondary origin pore space, and c) micropore space. Porosity is 3.3-17.4%, and permeability is (0.1-667.97) × 10 -3 μm 2.

  1. 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)

  2. The Pismo Formation and evidence for Pliocene tectonic evolution of the San Luis Range, central coast California

    Science.gov (United States)

    Lutz, A. T.; Abramsonward, H.; Lettis, W. R.; Thompson, S.; Page, W. D.

    2011-12-01

    Our study of the stratigraphic framework, facies architecture, and structural relationships within the Pliocene Pismo Formation reveals at least two temporally distinct phases of deformation within the San Luis Range and provides important context for on-going analyses of late Quaternary deformation and seismic hazard in coastal San Luis Obispo County. The Pismo Formation is composed of roughly 2 km of sediment deposited during the late Miocene to late Pliocene along the inner and outer continental shelf. The lower Pismo Formation is the Miguelito and Edna Members-lateral equivalents that compose the majority of Pismo Formation by volume-and the upper Pismo Formation is the Gragg Member, the Belleview Member, and the Squire Member. The Gragg Member and the Squire Member both overlie basal unconformities that record separate episodes of deformation in the San Luis Range. The first phase of deformation is characterized by laterally continuous short wavelength WNW-ESE-oriented folds developed in the lower Pismo Formation that collectively form the basin-scale Pismo syncline. This NNE-SSW-directed shortening initiated sometime after the completion of lower Pismo deposition at about 6 Ma. These laterally continuous short wavelength folds are only recognized in the Irish Hills block, the western and topographically highest part of the San Luis Range, and San Luis Obispo Creek marks the position of a roughly NNE-SSW-oriented structural boundary that separates intensely folded lower Pismo Formation in the Irish Hills block from the broadly folded lower Pismo Formation in the Edna block and the eastern San Luis Range. On the west side of this structural boundary the upper Pismo Formation overlies lower Pismo Formation along an angular unconformity and on the east side this contact is disconformable, indicating differential uplift and early Pliocene emergence of the Irish Hills block and western San Luis Range. The second phase of deformation is represented by a broad E

  3. 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.

  4. Microstructural Observations of the San Gregorio Fault, Moss Beach, CA.

    Science.gov (United States)

    Baer, S. H.; Tobin, H. J.; Gettemy, G. L.

    2001-12-01

    The Seal Cove Strand of the San Gregorio Fault at Moss Beach, Ca. is an active, large-offset, dominantly strike-slip fault which is exceptionally well exposed. It cuts the Miocene Purisima Formation at the surface, juxtaposing moderately lithified sandstone and conglomerate interbeds in the hanging wall with mudstones in the footwall. Previous and ongoing work shows that styles of deformation and seismic velocities are dissimilar across the fault zone, and within individual lithologic units. Architectural elements of the fault zone include a 12-30 m wide, variably-foliated central clay-rich core zone, an apparent mixed zone (as described recently for faults in unlithified clastic sediments in other tectonic settings), and a surrounding damage zone. In tandem with an ongoing seismic velocity study, we have characterized microstructural textures present across the fault exposure, applying petrographic study, backscatter electron (BSE) and SEM imaging, and electron microprobe analysis. The resulting characterization elucidates both mineralogic and lithification-state controls on deformation mechanisms. Detailed analysis of microstructural fabrics documents a diversity of deformation mechanisms, including cataclasis, particulate flow, and fracturing, consistent with an interpreted stress path based on deposition, progressive lithification, and finally uplift unloading of the fault rocks, all during ongoing fault displacement. Documentation of characteristics of fabrics in each structural element, especially micro-fracture density, has important implications for interpretation of the fault zone seismic velocity structure.

  5. Evolution and variability of the Asian monsoon and its potential linkage with uplift of the Himalaya and Tibetan Plateau

    Science.gov (United States)

    Tada, Ryuji; Zheng, Hongbo; Clift, Peter D.

    2016-12-01

    Uplift of the Himalaya and Tibetan Plateau (HTP) and its linkage with the evolution of the Asian monsoon has been regarded as a typical example of a tectonic-climate linkage. Although this linkage remains unproven because of insufficient data, our understanding has greatly advanced in the past decade. It is thus timely to summarize our knowledge of the uplift history of the HTP, the results of relevant climate simulations, and spatiotemporal changes in the Indian and East Asian monsoons since the late Eocene. Three major pulses of the HTP uplift have become evident: (1) uplift of the southern and central Tibetan Plateau (TP) at ca. 40-35 Ma, (2) uplift of the northern TP at ca. 25-20 Ma, and (3) uplift of the northeastern to eastern TP at ca. 15-10 Ma. Modeling predictions suggest that (i) uplift of the southern and central TP should have intensified the Indian summer monsoon (ISM) and the Somali Jet at 40-35 Ma; (ii) uplift of the northern TP should have intensified the East Asian summer monsoon (EASM) and East Asian winter monsoon (EAWM), as well as the desertification of inland Asia at 25-20 Ma; and (iii) uplift of the northeastern and eastern TP should have further intensified the EASM and EAWM at 15-10 Ma. We tested these predictions by comparing them with paleoclimate data for the time intervals of interest. There are insufficient paleoclimate data to test whether the ISM and Somali Jet intensified with the uplift of the southern and central TP at 40-35 Ma, but it is possible that such uplift enhanced erosion and weathering that drew down atmospheric CO2 and resulted in global cooling. There is good evidence that the EASM and EAWM intensified, and desertification started in inland Asia at 25-20 Ma in association with the uplift of the northern TP. The impact of the uplift of the northeastern and eastern TP on the Asian monsoon at 15-10 Ma is difficult to evaluate because that interval was also a time of global cooling and Antarctic glaciation that might also

  6. Submergence and Uplift Associated to Paleoearthquakes in the Northern Sunda Subduction System: Implications for Future Earthquakes.

    Science.gov (United States)

    Mondal, D. R.; McHugh, C. M.; Mortlock, R. A.; Steckler, M. S.; Seeber, L.; Goodbred, S. L., Jr.; Akhter, S. H.; Mustaque, S.

    2015-12-01

    Recent studies documented that the northern part of the Sunda subduction zone ruptured several times in the past 1500 years including one in 1762. To better understand megathrust surface ruptures and the hazards associated to them, we surveyed the SE coast of Bangladesh along the Teknaf peninsula and the Saint Martin anticline by dating coral microatolls of Porites lutea species by the U-Th dating method. Porites luteagrows a few centimeters below the low tide level creating a 5-12 mm thick skeletal band per year, which makes them a good indicator of relative sea level change that might be caused during tectonic submergence and uplift. U-Th ages were obtained from coral slabs and their growth bands interpreted from x-rays. The corals and marine terraces uplift were measured with high precision RTK GPS and modeled with high resolution DEM. The coral microatolls along the St. Martin anticline were dated to be ~ 250, 800 and 1300 years old. Since storm and other climatic phenomenon cannot cause uplift, we interpret that 2.5 m uplift was caused by 1762 earthquake that killed the coral microatolls. The coral slabs show three growth interruptions, where skeletal growth bands continued to grow onlapping the older growth bands. These growth onlaps could be the result of smaller uplift events after 1762 that did not result in coral mortality. The subsidence history extracted from vertical growth of the slabs suggests that the island is submerging at a rate of 11 mm/year. Corals growing 250 m from the dead coral colony post date the 1762 earthquake. Today living Porites lutea can be found 2.5 m below the dead coral heads and 9 cm above the spring low tide. The elevation of marine terraces (T1, T2 and T3) along the Teknaf coast is 2.5 m, 5-7 m and 11-13 m above sea level, respectively. A shell bed on top of T1 was dated at 1763 (dated by C14). This and the other two terraces could have been uplifted during the three earthquakes dated from coral microatolls. Considering the

  7. Complex Drainage Response To Migrating Tectonic Uplift: Example From The Northern California Coast Ranges

    Science.gov (United States)

    Lock, J.; Furlong, K. P.

    Migration of the Mendocino triple junction in northern California produces rapid and dramatic changes in the processes and patterns of crustal deformation. In response to this tectonism, the river systems of the northern California Coast Ranges have devel- oped a complex drainage history and pattern. The tectonic response to this migrating triple junction is described by the Mendocino Crustal Conveyor model (MCC), which predicts a spatially and temporally varying pattern of crustal deformation and up- lift. We use a combination of geomorphic and geophysical observations, coupled with landscape evolution modeling to develop the links between the geomorphic observa- tions in the Coast Ranges and the uplift/subsidence pattern predicted by the MCC. In contrast to many previous landscape evolution studies that find that streams typically cut through or are diverted around growing structures, in the northern California Coast Ranges drainage reversal and stream capture appear to be the response to tectonism. Our landscape evolution modeling shows that the uplift predicted by the MCC pro- duces: (1) a topographic gradient that switches from trending northwest to southeast, causing streams that at first flow to the northwest to reverse and drain to the south- east, (2) drainage divides that migrate in concert with the triple junction, and (3) river evolution that will result in fish hooked drainage patterns, all characteristics similar to those observed in the Northern California Coast Ranges. The uplift/subsidence pat- tern in the northern Coast Ranges is further complicated by the interaction of a second tectonic driver - the Pioneer fragment. The Pioneer fragment migrates with the Pacific (south of the triple junction) and creates a mini-slab window, adjacent to the coast, to produce a superimposed secondary uplift/subsidence pattern. The effects of this Pioneer related uplift are recorded by the Eel River. Key to the complex evolution of river systems in northern

  8. Observations of mesoscale and boundary-layer scale circulations affecting dust transport and uplift over the Sahara

    Directory of Open Access Journals (Sweden)

    J. H. Marsham

    2008-12-01

    Full Text Available Observations of the Saharan boundary layer, made during the GERBILS field campaign, show that mesoscale land surface temperature variations (which were related to albedo variations induced mesoscale circulations. With weak winds along the aircraft track, land surface temperature anomalies with scales of greater than 10 km are shown to significantly affect boundary-layer temperatures and winds. Such anomalies are expected to affect the vertical mixing of the dusty and weakly stratified Saharan Residual Layer (SRL. Mesoscale variations in winds are also shown to affect dust loadings in the boundary layer.

    Using the aircraft observations and data from the COSMO model, a region of local dust uplift, with strong along-track winds, was identified in one low-level flight. Large eddy model (LEM simulations based on this location showed linearly organised boundary-layer convection. Calculating dust uplift rates from the LEM wind field showed that the boundary-layer convection increased uplift by approximately 30%, compared with the uplift rate calculated neglecting the convection. The modelled effects of boundary-layer convection on uplift are shown to be larger when the boundary-layer wind is decreased, and most significant when the mean wind is below the threshold for dust uplift and the boundary-layer convection leads to uplift which would not otherwise occur.

    Both the coupling of albedo features to the atmosphere on the mesoscale, and the enhancement of dust uplift by boundary-layer convection are unrepresented in many climate models, but may have significant impacts on the vertical transport and uplift of desert dust. Mesoscale effects in particular tend to be difficult to parametrise.

  9. Shape and amount of the Quaternary uplift of the western Rhenish shield and the Ardennes (western Europe)

    Science.gov (United States)

    Demoulin, A.; Hallot, E.

    2009-09-01

    A good evaluation of the Quaternary uplift of the Rhenish shield is a key element for the understanding of the Cenozoic geodynamics of the western European platform in front of the alpine arc. Previous maps of the massif uplift relied on fluvial incision data since the time of the rivers' Younger Main Terrace to infer a maximum post-0.73 Ma uplift of ~ 290 m in the SE Eifel. Here, we propose a new interpretation of the incision data of the intra-massif streams, where anomalies in the terrace profiles would result from knickpoint retreat in the tributaries of the main rivers rather than from tectonic deformation. We also use additional geomorphological data referring to (1) deformed Tertiary planation surfaces, (2) the history of stream piracy that severely affected the Meuse basin in the last 1 Ma, and (3) incision data outside the Rhenish shield. A new map of the post-0.73 Ma uplift of the Rhenish shield is drawn on the basis of this enlarged dataset. It reduces the maximum amount of tectonic uplift in the SE Eifel to ~ 140 m and modifies the general shape of the uplift, namely straightening its E-W profile. It is also suggested that an uplift wave migrated across the massif, starting from its southern margin in the early Pleistocene and currently showing the highest intensity of uplift in the northern Ardennes and Eifel. These features seem to favour an uplift mechanism chiefly related to lithospheric folding and minimize the impact on the topography of a more local Eifel plume.

  10. Evaluation of Multi Canister Overpack (MCO) Handling Machine Uplift Restraint for a Seismic Event During Repositioning Operations

    Energy Technology Data Exchange (ETDEWEB)

    SWENSON, C.E.

    2000-05-15

    Insertion of the Multi-Canister Overpack (MCO) assemblies into the Canister Storage Building (CSB) storage tubes involves the use of the MCO Handling Machine (MHM). During MCO storage tube insertion operations, inadvertent movement of the MHM is prevented by engaging seismic restraints (''active restraints'') located adjacent to both the bridge and trolley wheels. During MHM repositioning operations, the active restraints are not engaged. When the active seismic restraints are not engaged, the only functioning seismic restraints are non-engageable (''passive'') wheel uplift restraints which function only if the wheel uplift is sufficient to close the nominal 0.5-inch gap at the uplift restraint interface. The MHM was designed and analyzed in accordance with ASME NOG-1-1995. The ALSTHOM seismic analysis reported seismic loads on the MHM uplift restraints and EDERER performed corresponding structural calculations to demonstrate structural adequacy of the seismic uplift restraint hardware. The ALSTHOM and EDERER calculations were performed for a parked MHM with the active seismic restraints engaged, resulting in uplift restraint loading only in the vertical direction. In support of development of the CSB Safety Analysis Report (SAR), an evaluation of the MHM seismic response was requested for the case where the active seismic restraints are not engaged. If a seismic event occurs during MHM repositioning operations, a moving contact at a seismic uplift restraint would introduce a friction load on the restraint in the direction of the movement. These potential horizontal friction loads on the uplift restraints were not included in the existing restraint hardware design calculations. One of the purposes of the current evaluation is to address the structural adequacy of the MHM seismic uplift restraints with the addition of the horizontal friction associated with MHM repositioning movements.

  11. Preliminary Geologic Map of the San Fernando 7.5' Quadrangle, Southern California: A Digital Database

    Science.gov (United States)

    Yerkes, R.F.

    1997-01-01

    The city of San Fernando sits atop a structurally complex, sedimentologically diverse, and tectonically evolving late Tertiary-Quaternary basin situated within the Transverse Ranges of southern California. The surrounding San Fernando Valley (SFV) contains the headwaters of the Los Angeles River and its tributaries. Prior to the advent of flood control, the valley floor was composed of active alluvial fans and floodplains. Seasonal streams emanating from Pacoima and Big Tujunga Canyons drain the complex western San Gabriel Mountains and deposit coarse, highly permeable alluvium that contains generally high-quality ground water. The more shallow western part derives mainly from Tertiary and pre-Tertiary sedimentary rocks, and is underlain by less permeable, fine-grained deposits containing persistent shallow ground water and poorer water quality. Home of the 1971 San Fernando and the 1994 Northridge earthquakes, the SFV experienced near-record levels of strong ground motion in 1994 that caused widespread damage from strong shaking and ground failure. A new map of late Quaternary deposits of the San Fernando area shows that the SFV is a structural trough that has been filled from the sides, with the major source of sediment being large drainages in the San Gabriel Mountains. Deposition on the major alluvial fan of Tujunga Wash and Pacoima Wash, which issues from the San Gabriel Mountains, and on smaller fans, has been influenced by ongoing compressional tectonics in the valley. Late Pleistocene deposits have been cut by active faults and warped over growing folds. Holocene alluvial fans are locally ponded behind active uplifts. The resulting complex pattern of deposits has a major effect on liquefaction hazards. Young sandy sediments generally are highly susceptible to liquefaction where they are saturated, but the distribution of young deposits, their grain size characteristics, and the level of ground water all are complexly dependent on the tectonics of the valley

  12. Risk Perception in Pregnant Adolescents in the “Rafael Valdés” Policlinic in 2009 Percepción del riesgo en gestantes adolescentes del Policlínico “Rafael Valdés”, año 2009.

    Directory of Open Access Journals (Sweden)

    Melissa Serra Ruíz

    2011-11-01

    Full Text Available Background: pregnancy in adolescence is commonly associated with higher medical risk, psychological problems and social disadvantages. Female adolescents tend to be ignorant on the risks of pregnancy at such age. Objective: to identify the risk perception in pregnant adolescents of the “Rafael Valdés” policlinic. Method: a prospective, descriptive study was conducted at the ‘’Rafael Valdés” policlinic in Cotorro, Habana, from January 1st to December 31st, 2009. It included 79 pregnant adolescents. Variables analyzed: age, educational level, current educational and marital status. Data were collected through direct interview. A questionnaire was also applied in order to assess risk perception in the group of adolescents. Data were processed in Excel, thus determining frequencies and percents. Results: 89, 9 % of adolescents were between 15 and 19 years old, 91, 5 % were single or had unstable partners and 74, 4 % began having sexual relationships after they were 15 years old. 49, 9 % of these adolescents had abandoned their studies. Most of them referred to know about contraception, sexuality and pregnancy risks. They had family support and pregnancy was booked on time. Nevertheless, there was no correspondence with the reasons exposed to continue with pregnancy. Conclusion: the process of orientation and education of adolescents on reproductive health and sexuality issues should be systematic and constitutes our responsibility.Fundamento: el embarazo en la adolescencia se asocia a mayores riesgos médicos, problemas psicológicos y desventajas sociales. Las adolescentes, han demostrado desconocimiento acerca de los riesgos de un embarazo a esta edad. Objetivo: identificar la precepción de riesgo en embarazadas adolescentes del policlínico “Rafael Valdés”. Método: estudio descriptivo

  13. Sombrero uplift above the Altiplano-Puna Magma Body: evidence of a ballooning mid-crustal diapir.

    Science.gov (United States)

    Fialko, Yuri; Pearse, Jill

    2012-10-12

    The Altiplano-Puna ultralow-velocity zone in the central Andes, South America, is the largest active magma body in Earth's continental crust. Space geodetic observations reported an uplift in the Altiplano-Puna proper at a rate of ~10 mm/year; however, the nature of the inferred inflation source has been uncertain. We present data showing that the uplift has persisted at a nearly constant rate over the past two decades, and is surrounded by a broad zone of subsidence. We show that the ongoing uplift and peripheral subsidence may result from a large mid-crustal diapir fed by partial melt from the Altiplano-Puna Magma Body.

  14. Age estimates and uplift rates for Late Pleistocene marine terraces: Southern Oregon portion of the Cascadia Forearc

    Science.gov (United States)

    Muhs, Daniel R.; Kelsey, Harvey M.; Miller, Gifford H.; Kennedy, George L.; Whelan, Joseph F.; McInelly, Galan W.

    1990-05-01

    Marine terraces are prominent landforms along the southern Oregon coast, which forms part of the forearc region of the Cascadia subduction zone. Interest in the Cascadia subduction zone has increased because recent investigations have suggested that slip along plates at certain types of convergent margins is characteristically accompanied by large earthquakes. In addition, other investigations have suggested that convergent margins can be broadly classified by the magnitude of their uplift rates. With these hypotheses in mind, we generated new uranium series, amino acid, and stable isotope data for southern Oregon marine terrace fossils. These data, along with terrace elevations and two alternative estimates of sea level at the time of terrace formation, allow us to determine terrace ages and uplift rates. Uranium series analysis of fossil coral yields an age of 83±5 ka for the Whisky Run terrace at Coquille Point in Bandon, Oregon. A combination of amino acid and oxygen isotope data suggest ages of about 80 and 105 ka for the lowest two terraces at Cape Blanco. These ages indicate uplift rates of 0.45-1.05 and 0.81-1.49 m/kyr for Coquille Point and Cape Blanco, respectively. Late Quaternary uplift rates of marine terraces yield information about deformation in the overriding plate, but it is unclear if such data vary systematically with convergent margin type. In order to assess the utility of the southern Oregon uplift rates for predicting the behavior of the Cascadia subduction zone, we compared late Quaternary uplift rates derived from terrace data from subduction zones around the world. On the basis of this comparison the southern Oregon rates of vertical deformation are not unusually high or low. Furthermore, late Quaternary uplift rates show little relationship to the type of convergent margin. These observations suggest that local structures may play a large role in uplift rate variability. In addition, while the type of convergent margin may place an

  15. The Western Solomons Forearc: Independent Inner and Outer Forearc Paleo-Uplift Histories and Relationship to Megathrust Rupture

    Science.gov (United States)

    Taylor, F. W.; Thirumalai, K.; Lavier, L. L.; Papabatu, A. K.; Toba, T.; Shen, C. C.; Cai, B.

    2014-12-01

    The Western Solomons forearc has undergone repeated uplifts that probably were coseismic and similar to that during the 1 April 2007 Mw 8.1 megathrust rupture that raised the outer forearc as much as 2.5 m. A parallel swath of the inner forearc subsided ~0.5 m during the 2007 event. The Western Solomons is ideal for crustal motion measurements because both the outer forearc above the seismogenic zone and the inner forearc are occupied by reef-fringed islands enabling land-based measurements of vertical displacements. U-series and 14C dating of uplifted corals and microatolls has provided the ages for a number of paleo-uplift events that we infer to have been coseismic. While the outer forearc has uplifted rapidly in late Holocene time at rates from ~1 to 8 mm/yr, the inner forearc has risen at only 0 - 1.1 mm/yr. It is notable that the inner and outer forearcs are separated by an arc-parallel boundary along which there is little or no net uplift. However, although both the inner and outer forearcs have late Quaternary histories of relatively rapid net uplift, they appear to have quite different uplift histories. The outer forearc has uplifted several times over the past 1000 years by as much as several meters in each event. Although the inner forearc subsided during the 2007 event and should subside during all events that ruptured the seismogenic zone beneath the outer forearc, it also has undergone abrupt late Holocene uplifts that do not correspond to those of the outer forearc. But the most surprising difference between the inner and outer forearcs is that 8-9 ka corals in growth position and emerged solution notches were found in a number of inner forearc sites adjacent to corals of the ~6 ka mid-Holocene high sea level that was a little higher than present sea level. Because sea level at 8-9 ka was 10-20 m lower than present in this region, 10-20 m of uplift is required between 8-9 ka and 6 ka during one or more tectonic events. Some of the 9 ka corals have

  16. Tectonic and erosion-driven uplift in the Gamburtsev Subglacial Mountains of East Antarctica

    Science.gov (United States)

    Ferraccioli, Fausto; Jordan, Tom; Watts, Tony; Bell, Robin; Jamieson, Stewart; Finn, Carol; Damaske, Detlef

    2014-05-01

    Understanding the mechanisms leading to intraplate mountain building remains a significant challenge in Earth Sciences compared to ranges formed along plate margins. The most enigmatic intraplate mountain range on Earth is the Gamburtsev Subglacial Mountains (GSM) located in the middle of the Precambrian East Antarctic Craton. During the International Polar Year, the AGAP project acquired 120,000 line km of new airborne geophysical data (Bell et al., 2011, Science) and seismological observations (Hansen et al., 2010, EPSL) across central East Antarctica. Models derived from these datasets provide new geophysical perspectives on crustal architecture and possible uplift mechanisms for the enigmatic GSM (Ferraccioli et al., 2011, Nature). The geophysical data define a 2,500-km-long Paleozoic to Mesozoic rift system in East Antarctica surrounding the GSM. A thick high-density lower crustal root is partially preserved beneath the range and has been interpreted as formed during the Proterozoic assembly of East Antarctica. Rifting could have triggered phase/density changes at deep crustal levels, perhaps restoring some of the latent root buoyancy, as well as causing rift-flank uplift. Permian rifting is well-established in the adjacent Lambert Rift, and was followed by Cretaceous strike-slip faulting and transtension associated with Gondwana break-up; this phase may have provided a more recent tectonic trigger for the initial uplift of the modern GSM. The Cretaceous rift-flank uplift model for the Gamburtsevs is appealing because it relates the initiation of intraplate mountain-building to large-scale geodynamic processes that led to the separation of Greater India from East Antarctica. It is also consistent with several geological and geophysical interpretations within the Lambert Rift. However, recent detrital thermochrology results from Oligocene-Quaternary sediments in Prydz Bay (Tochlin et al., 2012, G3) argue against the requirement for major Cretaceous rift

  17. Consistent and inconsistent truncations. General results and the issue of the correct uplifting of solutions

    CERN Document Server

    Pons, J M; Pons, Josep M.; Talavera, Pere

    2004-01-01

    We clarify the existence of two different types of truncations of the field content in a theory, the consistency of each type being achieved by different means. A proof is given of the conditions to have a consistent truncation in the case of dimensional reductions induced by independent Killing vectors. We explain in what sense the tracelessness condition found by Scherk and Scharwz is not only a necessary condition but also a {\\it sufficient} one for a consistent truncation. The reduction of the gauge group is fully performed showing the existence of a sector of rigid symmetries. We show that truncations originated by the introduction of constraints will in general be inconsistent, but this fact does not prevent the possibility of correct upliftings of solutions in some cases. The presence of constraints has dynamical consequences that turn out to play a fundamental role in the correctness of the uplifting procedure.

  18. Seismic image of the Ivanhoe Lake Fault Zone in the Kapuskasing Uplift of the Canadian Shield

    Science.gov (United States)

    Wu, Jianjun; Mereu, Robert F.; Percival, John A.

    1992-02-01

    The Kapuskasing uplift, located in the central Canadian shield, represents an oblique exposure of the Archean middle to lower crust. The Ivanhoe Lake fault zone, believed to be the basal thrust carrying the high-grade rocks of the Kapuskasing zone over the low-grade Abitibi greenstone belt, holds the key to understanding the nature and evolution of the Kapuskasing uplift. Despite numerous geological and geophysical studies, including LITHOPROBE deep seismic reflection profiles, and because of very limited bedrock exposure in the area, the shallow structure of the Ivanhoe Lake fault zone remains obscure. Here we present results obtained by reprocessing data from a LITHOPROBE seismic reflection profile across the fault zone. For the first time, the Ivanhoe Lake fault zone is clearly imaged on the seismic section as a series of west-dipping reflectors with an average dip of 20°, which can be traced to the surface. The results support the conclusion that fault zones form good reflectors.

  19. Simulation and modal analysis of the uplift device of a sugarcane harvester using virtual prototype technology

    Institute of Scientific and Technical Information of China (English)

    HU Ying-chun; LI Shang-ping

    2007-01-01

    A three-dimensional model of the uplift device of a sugarcane harvester was built up in Pro/Engineer. Simulation and evaluation of its motional and dynamic performance were performed with the automatic dynamic analysis of mechanical system (ADAMS). ANSYS program was applied to the structural analysis of the model. A finite element analytic model was built up with the bottom-up methodology and was meshed. The default Block Lanczos method was used to work out the native frequency. The results indicate that the five lower modes-the transpotaion wheel, the left holding device, the right holding device, the left cutter disk, and the right cutter disk- and displacement of vibratory type only slightly affect the process of sugarcane harvester and harvesting quality. So it is advisable that the optimization of the static intensity other than the dynamic stiffness of uplift device be executed.

  20. The High Arctic Large Igneous Province Mantle Plume caused uplift of Arctic Canada

    Science.gov (United States)

    Galloway, Jennifer; Ernst, Richard; Hadlari, Thomas

    2016-04-01

    The Sverdrup Basin is an east-west-trending extensional sedimentary basin underlying the northern Canadian Arctic Archipelago. The tectonic history of the basin began with Carboniferous-Early Permian rifting followed by thermal subsidence with minor tectonism. Tectonic activity rejuvenated in the Hauterivian-Aptian by renewed rifting and extension. Strata were deformed by diapiric structures that developed during episodic flow of Carboniferous evaporites during the Mesozoic and the basin contains igneous components associated with the High Arctic Large Igneous Province (HALIP). HALIP was a widespread event emplaced in multiple pulses spanning ca. 180 to 80 Ma, with igneous rocks on Svalbard, Franz Josef Island, New Siberian Islands, and also in the Sverdrup Basin on Ellef Ringnes, Axel Heiberg, and Ellesmere islands. Broadly contemporaneous igneous activity across this broad Arctic region along with a reconstructed giant radiating dyke swarm suggests that HALIP is a manifestation of large mantle plume activity probably centred near the Alpha Ridge. Significant surface uplift associated with the rise of a mantle plume is predicted to start ~10-20 my prior to the generation of flood basalt magmatism and to vary in shape and size subsequently throughout the LIP event (1,2,3) Initial uplift is due to dynamical support associated with the top of the ascending plume reaching a depth of about 1000 km, and with continued ascent the uplift topography broadens. Additional effects (erosion of the ductile lithosphere and thermal expansion caused by longer-term heating of the mechanical lithosphere) also affect the shape of the uplift. Topographic uplift can be between 1 to 4 km depending on various factors and may be followed by subsidence as the plume head decays or become permanent due to magmatic underplating. In the High Arctic, field and geochronological data from HALIP relevant to the timing of uplift, deformation, and volcanism are few. Here we present new evidence

  1. Surface uplift and time-dependent seismic hazard due to fluid-injection in eastern Texas

    Science.gov (United States)

    Shirzaei, M.; Ellsworth, W. L.; Tiampo, K. F.; González, P. J.; Manga, M.

    2015-12-01

    US states such as Texas and Oklahoma that produce high-volumes of unconventional oil and gas, are facing a sharp increase in seismicity. Observations of the associated surface deformation and accompanying physical models that unequivocally link the seismicity and waste water injection are scarce. Here, we find that the waste water injection in eastern Texas causes uplift, detectable using radar interferometric data. Combining the uplift and injection data through a poroelastic model allows for the resolution of a complex crustal distribution of hydraulic conductivity and pore pressure. We find that the ~5 years pore pressure increase is capable of triggering the 17 May 2012, Mw 4.8 earthquake, the largest event recorded in east Texas. This study shows that surface deformation data are vital in order to constrain the spatiotemporal variations of the stress field in the vicinity of injection sites.

  2. Lower Paleogene Tectonostratigraphy of Balochistan: Evidence for Time-Transgressive Late Paleocene-Early Eocene Uplift

    Directory of Open Access Journals (Sweden)

    William C. Clyde

    2013-07-01

    Full Text Available Analysis of lithofacies, paleoflow directions, and sandstone petrography of upper Paleocene-lower Eocene paralic and continental sediments exposed along the transpressional suture zone of the western margin of the Indian plate indicate that the process of deformation and uplift of the carbonate shelf in this area had started by late Paleocene time. This tectonic uplift and deformation is documented by: (1 an overall shallowing upward synorogenic sequence of sediments, (2 proximal conglomerate facies (consisting of lower Paleocene and Mesozoic clasts dominating in the western part of the study area and distal facies of sandstone and shale dominating in the eastern part of the study area, (3 the existence of an unconformity of late Paleocene-early Eocene age in the Quetta and Kalat regions, (4 paleocurrent directions in deltaic and fluvial deposits indicating southeastward flowing sediment dispersal paths during late Paleocene-early Eocene time, which is opposite to that found in the late Cretaceous, suggesting a reversal in the depositional slope of the Cretaceous shelf, and (5 petrographic study of sandstones indicating a collision suture/fold thrust belt provenance. This episode of uplift and deformation could be the result of India-Arabian transpression with associated ophiolite obduction or, more likely, to represent the local response to initial India-Asia contact. The unroofing pattern and uplift geometry of the western Indian shelf suggests that this tectonism first started in the southern part of the study area (Kalat-Khuzdar area during the late Paleocene-early Eocene and proceeded northward in a time-transgressive fashion.

  3. Recent uplift of the Atlantic Atlas (offshore West Morocco): Tectonic arch and submarine terraces

    Science.gov (United States)

    Benabdellouahed, M.; Klingelhoefer, F.; Gutscher, M.-A.; Rabineau, M.; Biari, Y.; Hafid, M.; Duarte, J. C.; Schnabel, M.; Baltzer, A.; Pedoja, K.; Le Roy, P.; Reichert, C.; Sahabi, M.

    2017-06-01

    Re-examination of marine geophysical data from the continental margin of West Morocco reveals a broad zone characterized by deformation, active faults and updoming offshore the High Atlas (Morocco margin), situated next to the Tafelney Plateau. Both seismic reflection and swath-bathymetric data, acquired during Mirror marine geophysical survey in 2011, indicate recent uplift of the margin including uplift of the basement. This deformation, which we propose to name the Atlantic Atlas tectonic arch, is interpreted to result largely through uplift of the basement, which originated during the Central Atlantic rifting stage - or even during phases of Hercynian deformation. This has produced a large number of closely spaced normal and reverse faults, ;piano key faults;, originating from the basement and affecting the entire sedimentary sequence, as well as the seafloor. The presence of four terraces in the Essaouira canyon system at about 3500 meters water depth and ;piano key faults; and the fact that these also affect the seafloor, indicate that the Atlantic Atlas is still active north of Agadir canyon. We propose that recent uplift is causing morphogenesis of four terraces in the Essaouira canyon system. In this paper the role of both Canary plume migration and ongoing convergence between the African and Eurasian plates in the formation of the Atlantic Atlas are discussed as possibilities to explain the presence of a tectonic arch in the region. The process of reactivation of passive margins is still not well understood. The region north of Agadir canyon represents a key area to better understand this process.

  4. Erosion-driven uplift in the Gamburtsev Subglacial Mountains of East Antarctica

    Science.gov (United States)

    Paxman, G. J. G.; Watts, A. B.; Ferraccioli, F.; Jordan, T. A.; Bell, R. E.; Jamieson, S. S. R.; Finn, C. A.

    2016-10-01

    The relative roles of climate and tectonics in mountain building have been widely debated. Central to this debate is the process of flexural uplift in response to valley incision. Here we quantify this process in the Gamburtsev Subglacial Mountains, a paradoxical tectonic feature in cratonic East Antarctica. Previous studies indicate that rifting and strike-slip tectonics may have provided a key trigger for the initial uplift of the Gamburtsevs, but the contribution of more recent valley incision remains to be quantified. Inverse spectral (free-air admittance and Bouguer coherence) methods indicate that, unusually for continents, the coherence between free-air gravity anomalies and bedrock topography is high (>0.5) and that the elastic thickness of the lithosphere is anomalously low (erosion are quantified: dendritic fluvial incision overprinted by Alpine-style glacial erosion in the Gamburtsevs and outlet glacier-type selective linear erosion in the Lambert Rift, part of the East Antarctic Rift System. 3D flexural models indicate that valley incision has contributed ca. 500 m of peak uplift in the Gamburtsevs and up to 1.2 km in the Lambert Rift, which is consistent with the present-day elevation of Oligocene-Miocene glaciomarine sediments. Overall, we find that 17-25% of Gamburtsev peak uplift can be explained by erosional unloading. These relatively low values are typical of temperate mountain ranges, suggesting that most of the valley incision in the Gamburtsevs occurred prior to widespread glaciation at 34 Ma. The pre-incision topography of the Gamburtsevs lies at 2-2.5 km above sea-level, confirming that they were a key inception point for the development of the East Antarctic Ice Sheet. Tectonic and/or dynamic processes were therefore responsible for ca. 80% of the elevation of the modern Gamburtsev Subglacial Mountains.

  5. A long-term rock uplift rate for eastern Crete from exposure dating of marine terraces

    Science.gov (United States)

    Strobl, M.; Hetzel, R.; Ivy-Ochs, S.; Alfimov, V.; Kubik, P. W.; Fassoulas, C.; Palumbo, L.

    2009-04-01

    The island of Crete in the forearc of the Hellenic subduction zone has a rugged topography with a relief exceeding 2 km. Rock uplift rates of 2-4 mm/a were estimated previously from raised Late Holocene shorelines (Lambeck, 1995) but may not be representative on longer timescales, because earthquakes with up to 9 m of coseismic uplift have recently affected Crete (Stiros, 2001). Here we use marine terraces near Kato Zakros to quantify the long-term rock uplift rate for eastern Crete. Our field investigations and topographic profiles document a flight of at least 15 marine bedrock terraces carved into limestone bedrock. Age constraints for the terraces were obtained by 36Cl exposure dating of bedrock samples and 10Be dating of sandstone cobbles found on some terraces. Our results suggest that the terraces T4 and T5 at elevations of 68 and 76 m, respectively, formed during sea level highstands associated with marine isotope stage 5e, i.e. ~125 ka ago. Correlating the other terraces (T1 to T11) to a sea-level curve for the Red Sea (Siddall et al., 2003) indicates an uplift rate of 0.5-0.6 mm/a during the last 400 ka; significantly lower than previous estimates based on the elevation of Late Holocene shorelines. References Lambeck, K. (1995), Late Pleistocene and Holocene sea-level change in Greece and SW Turkey - a separation of eustatic, isostatic and tectonic contributions. Geophys. J. Int. 122, 1022-1044. Siddall, M., Rohling, E.J., Almogi-Labin, A., Hemleben, C., Meischner, D., Schmelzer, I., and Smeed, D.A. (2003), Sea-level fluctuations during the last glacial cycle. Nature, 423, 853-858. Stiros, S.C. (2001), The AD 365 Crete earthquake and possible seismic clustering during the fourth to sixth centuries AD in the Eastern Mediterranean: a review of historical and archaeological data. J. Struct. Geol., 23, 545-562.

  6. 10D massive type IIA supergravities as the uplift of parabolic M2-brane torus bundles

    Energy Technology Data Exchange (ETDEWEB)

    Garcia del Moral, Maria Pilar [Universidad de Antofagasta (Chile). Dept. de Fisica; Restuccia, Alvaro [Universidad de Antofagasta (Chile). Dept. de Fisica; Universidad Simon Bolivar, Caracas (Venezuela, Bolivarian Republic of). Dept. de Fisica

    2016-04-15

    We remark that the two 10D massive deformations of the N = 2 maximal type IIA supergravity (Romans and HLW supergravity) are associated to the low energy limit of the uplift to 10D of M2-brane torus bundles with parabolic monodromy linearly and non-linearly realized respectively. Romans supergravity corresponds to M2-brane compactified on a twice-punctured torus bundle. (copyright 2015 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  7. Aerial gamma ray and magnetic survey: Uncompahgre Uplift Project, Montrose Quadrangle, Colorado. Final report

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-04-01

    The quadrangle includes portions of the Colorado Plateau and southern Rocky Mountains Physiographic Provinces. The entire area of the Gunnison Uplift and parts of the Uncompahgre and Sawatch Uplifts are included. A part of the Piceance Basin and a segment of the Rio Grande Rift Valley are also included. A basement complex of Precambrian metamorphic and igneous rocks is exposed in the core of the Gunnison and Sawatch Uplifts in the Southern Rocky Mountains. Jurassic and Cretaceous age sedimentary rocks lie directly on the Precambrian basement in most places. They lie on Paleozoic rocks at the west edge of the Sawatch Uplift in the north-central part of the quadrangle. Triassic beds are mapped only in the canyon of the Uncompahgre River near the southwest corner of the quadrangle. A suite of Tertiary volcanics and some sedimentary rocks occupy extensive areas. Plutonic rocks of Tertiary and laramide age occupy only a small part of the quadrangle. The literature consulted included information on about 100 separate occurrences of radioactive minerals and/or anomalous radioactivity within the quadrangle. Many fracture and stratigraphically controlled forms are reported. Most of these occurrences are clustered in three areas: Cochetopa Creek, Cebolla Creek, and Marshall Pass. Important uranium production is recorded from deposits in the Cochetopa Creek and Marshall Pass areas. A total of 220 anomalies in the uranium channel meet the minimum requirements as defined in the Interpretation methods section of Volume I of this report. A few of them appear to be related to known economic deposits, and provide examples for comparison with anomalies in other parts of the quadrangle where radioactive mineral occurrences have not been reported.

  8. Cenozoic uplift on the West Greenland margin: active sedimentary basins in quiet Archean terranes.

    Science.gov (United States)

    Jess, Scott; Stephenson, Randell; Brown, Roderick

    2016-04-01

    The North Atlantic is believed by some authors to have experienced tectonically induced uplift within the Cenozoic. Examination of evidence, onshore and offshore, has been interpreted to imply the presence of kilometre scale uplift across the margins of the Barents Sea, North Sea, Baffin Bay and Greenland Sea. Development of topography on the West Greenland margin (Baffin Bay), in particular, has been subject to much discussion and dispute. A series of low temperature thermochronological (AFT and AHe) studies onshore and interpretation of seismic architecture offshore have suggested uplift of the entire margin totalling ~3km. However, challenges to this work and recent analysis on the opposing margin (Baffin Island) have raised questions about the validity of this interpretation. The present work reviews and remodels the thermochronological data from onshore West Greenland with the aim of re-evaluating our understanding of the margin's history. New concepts within the discipline, such as effect of radiation damage on Helium diffusivity, contemporary modelling approaches and denudational mapping are all utilised to investigate alternative interpretations to this margins complex post rift evolution. In contrast to earlier studies our new approach indicates slow protracted cooling across much of the region; however, reworked sedimentary samples taken from the Cretaceous Nuussuaq Basin display periods of rapid reheating and cooling. These new models suggest the Nuussuaq Basin experienced a tectonically active Cenozoic, while the surrounding Archean basement remained quiet. Faults located within the basin appear to have been reactivated during the Palaeocene and Eocene, a period of well-documented inversion events throughout the North Atlantic, and may have resulted in subaerial kilometre scale uplift. This interpretation of the margin's evolution has wider implications for the treatment of low temperature thermochronological data and the geological history of the North

  9. The recycled orogenic sand provenance from an uplifted thrust belt, Betic Cordillera, Southern Spain

    OpenAIRE

    Critelli, Salvatore; Arribas Mocoroa, José; Le Pera, Emilia; Tortosa, A; Marsaglia, Kathleen M.; Latter, Kelly K.

    2003-01-01

    The Betic Cordillera of southern Spain represents an uplifted foreland fold–thrust belt. Source rock types of the Betic Cordillera include metamorphic (mainly phyllite, schist, quartzite, and gneiss), sedimentary (siliciclastic and carbonate), volcanic (felsic to intermediate pyroclasts), and mantle-derived (peridotite, gabbro, serpentinite, and serpentine schist) rocks. The fluvial systems range that transect the Betic Cordillera are the major detrital source of sediment ...

  10. Uplift-driven diversification in the Hengduan Mountains, a temperate biodiversity hotspot.

    Science.gov (United States)

    Xing, Yaowu; Ree, Richard H

    2017-04-25

    A common hypothesis for the rich biodiversity found in mountains is uplift-driven diversification-that orogeny creates conditions favoring rapid in situ speciation of resident lineages. We tested this hypothesis in the context of the Qinghai-Tibetan Plateau (QTP) and adjoining mountain ranges, using the phylogenetic and geographic histories of multiple groups of plants to infer the tempo (rate) and mode (colonization versus in situ diversification) of biotic assembly through time and across regions. We focused on the Hengduan Mountains region, which in comparison with the QTP and Himalayas was uplifted more recently (since the late Miocene) and is smaller in area and richer in species. Time-calibrated phylogenetic analyses show that about 8 million y ago the rate of in situ diversification increased in the Hengduan Mountains, significantly exceeding that in the geologically older QTP and Himalayas. By contrast, in the QTP and Himalayas during the same period the rate of in situ diversification remained relatively flat, with colonization dominating lineage accumulation. The Hengduan Mountains flora was thus assembled disproportionately by recent in situ diversification, temporally congruent with independent estimates of orogeny. This study shows quantitative evidence for uplift-driven diversification in this region, and more generally, tests the hypothesis by comparing the rate and mode of biotic assembly jointly across time and space. It thus complements the more prevalent method of examining endemic radiations individually and could be used as a template to augment such studies in other biodiversity hotspots.

  11. Fluvial bevelling of topography controlled by lateral channel mobility and uplift rate

    Science.gov (United States)

    Bufe, Aaron; Paola, Chris; Burbank, Douglas W.

    2016-09-01

    Valley morphologies of rivers crossing zones of active uplift range from narrow canyons to broad alluvial surfaces. They provide illuminating examples of the fundamental, but poorly understood, competition between relief creation and landscape flattening. Motivated by a field example of abandoned kilometre-wide, fluvially eroded platforms on active detachment folds in the Tian Shan foreland, we present physical experiments investigating the controls on the area of a growing fold that is reworked by antecedent rivers. These experiments reproduce the range of observed field morphologies, varying from wholesale bevelling of the uplifting fold to the formation of narrow, steep-walled canyons. A log-linear fit to a simple dimensionless parameter shows that the competition between lateral channel mobility and rock-uplift rate explains >95% of the variance in the bevelled fraction of the folds. Our data suggest that lateral bedrock erosion rates of 0.5-40 m yr-1 are required to explain the formation of extensive platforms in the Tian Shan foreland and imply that varying water and sediment fluxes can cause striking changes in the degree of landscape flattening by influencing the lateral erosion rate.

  12. Delineation of uplifting and subsiding zones in the Western Pannonian Basin using sinousity analysis

    Science.gov (United States)

    Gál, Judit; Kovács, Gábor; Zámolyi, András.; Pál, Lénárd; Székely, Balázs

    2010-05-01

    The recent tectonic setting of the Pannonian-basin is partly caracterised by different uplift and subsident pattern. Our study area the western part of the Bakony-Hill is currently uplifting while the neighbouring Little Hungarian Plane subsides. The contact zone of this two domain can be outline only from seismic profiles and borehole data. This normal faulting represented displacement int he seismic profile, however cannot be traced up to the surface. The depth conditions can only be partly recontsructed because we use TWT data, but there is evidence that early pannonian strata are faulted. In order to trace the faulted we analysed several seismic profile. We anticipate, that there motions inply surface this placement. Slope angles are therefore are disturbed, the valley slopes are modified and the river courses are sensitive to that change and accomodate to the new setting, restoring the original channel slope. Analysing the sinousity of these river course. We can inply to the differential uplift pattern. Historic maps were used for river course velineation, The Second Military Survey of the Habsburg Empire (1806-1869) perfect possibility for that. This mapsheets record the pre-regulation conditions of the hidrological system, this situation is the closest to the natural unmodified state.

  13. Ground uplift related to permeability enhancement following the 2011 Tohoku earthquake in the Kanto Plain, Japan

    Science.gov (United States)

    Ishitsuka, Kazuya; Matsuoka, Toshifumi; Nishimura, Takuya; Tsuji, Takeshi; ElGharbawi, Tamer

    2017-06-01

    We investigated the post-seismic surface displacement of the 2011 Tohoku earthquake around the Kanto Plain (including the capital area of Japan), which is located approximately 400 km from the epicenter, using a global positioning system network during 2005-2015 and persistent scatterer interferometry of TerraSAR-X data from March 2011 to November 2012. Uniform uplift owing to viscoelastic relaxation and afterslip on the plain has been reported previously. In addition to the general trend, we identified areas where the surface displacement velocity was faster than the surrounding areas, as much as 7 mm/year for 3 years after the earthquake and with a velocity decay over time. Local uplift areas were 30 × 50 km2 and showed a complex spatial distribution with an irregular shape. Based on an observed groundwater level increase, we deduce that the local ground uplift was induced by a permeability enhancement and a pore pressure increase in the aquifer system, which is attributable to mainshock vibration.[Figure not available: see fulltext.

  14. A 17-My-old whale constrains onset of uplift and climate change in east Africa

    Science.gov (United States)

    Wichura, Henry; Jacobs, Louis L.; Lin, Andrew; Polcyn, Michael J.; Manthi, Fredrick K.; Winkler, Dale A.; Strecker, Manfred R.; Clemens, Matthew

    2015-03-01

    Timing and magnitude of surface uplift are key to understanding the impact of crustal deformation and topographic growth on atmospheric circulation, environmental conditions, and surface processes. Uplift of the East African Plateau is linked to mantle processes, but paleoaltimetry data are too scarce to constrain plateau evolution and subsequent vertical motions associated with rifting. Here, we assess the paleotopographic implications of a beaked whale fossil (Ziphiidae) from the Turkana region of Kenya found 740 km inland from the present-day coastline of the Indian Ocean at an elevation of 620 m. The specimen is ∼17 My old and represents the oldest derived beaked whale known, consistent with molecular estimates of the emergence of modern strap-toothed whales (Mesoplodon). The whale traveled from the Indian Ocean inland along an eastward-directed drainage system controlled by the Cretaceous Anza Graben and was stranded slightly above sea level. Surface uplift from near sea level coincides with paleoclimatic change from a humid environment to highly variable and much drier conditions, which altered biotic communities and drove evolution in east Africa, including that of primates.

  15. Holocene uplift and palaeoseismicity on the Eliki Fault, Western Gulf of Corinth, Greece

    Directory of Open Access Journals (Sweden)

    I. Stewart

    1996-06-01

    Full Text Available Radiocarbon dating of elevated coastal phenomena along the emergent footwall of the Eliki Fault in the West- em Gulf of Corinth has established a chronology of tectonic emergence during Holocene times. The results confirm -6 m of coastal uplift over the last 3000 years at sites both immediately adjacent to, and more distant from, the offshore l'ault. Although revealing little or no spatial vm.iation along the fault, temporally the data de- fine two phases of enhanced tectonic activity (0-3000 year B.P. and pre- 7-8000 year B.P. separated by a 4- 5000 year period of tectonic quiescence. Well documented historical surface faulting during the most recent lclive phase testify to the contribution to net uplift played by coseismic increments, but these are considered to be superimposed on significant aseismic movements. While asesismic uplift confuses the palaeoseismic .ecord, correlation of prominent notch levels with dated raised shoreline fauna provides evidence for at least 3 surface faulting events during the past 2500 years.

  16. Fish tank as evidence for modern coastal uplift at Diu, Saurashtra Peninsula, India

    Science.gov (United States)

    Kázmér, Miklós; Bhatt, Nilesh; Ujay, Vishal; Prizomwala, Siddharth; Taboroši, Danko; Székely, Balázs

    2013-04-01

    India - except the Himalayas - is considered to be tectonically stable region, with an occasional intra-plate earthquake here and there. The Saurashtra Peninsula in Western India had earthquakes less than Mw 5.7 during the last fifty years. Search for evidence of preceding major seismic events is ongoing. There is a ~16th century fish tank hewn in coastal Pleistocene limestone near Diu city, Saurashtra Peninsula, western India. The 3×4 m basin is connected to the sea by an 1 m deep channel. Today the tank is inoperable: not even high spring tide can fill the basin. We suggest that the tank, the tidal platform and the whole Diu coast have been uplifted by ~0.5 m shortly after the tank was constructed by early Portuguese colonists in the 16-17th century. Coastal karst dissolution - active in the spray zone above sea level - left deep marks on carved surfaces since uplift. We suggest that uplift of Diu Island occurred in the 16-17th century, during a major seismic event, connected to active faulting offshore along the Narmada Fault.

  17. Fission track dating of the Cenozoic uplift in Mabian area, southern Sichuan Province, China

    Institute of Scientific and Technical Information of China (English)

    AN YanFen; HAN ZhuJun; WAN JingLin

    2008-01-01

    The apparent ages of samples are obtained from fission track dating of apatite samples collected from the fault zones in Mabian area, southern Sichuan Province.In addition, thermal history is simulated from the obtained data by applying AFTSolve Program, to acquire the thermal evolution history of the samples.The result shows that tectonically the Mabian area was relatively stable between 25 and 3 Ma, compared to the inner parts and other marginal areas of the Tibetan Plateau.The studied area had little response to the rapid uplift events that occurred for several times in the Tibetan Plateau during 25-3 Ma.The latest thermal event related to the activity of the Lidian fault zone (about 8 Ma) is later than that of the Ebian fault zone (18-15 Ma ) to the west, indicating to some extent that the evolution of fault activity in the Mabian area has migrated from west to east.The latest extensive tectonic uplift occurred since about 3 Ma.As compared with the Xianshuihe fault zone, the Mabian area is closer to the eastern margin of the plateau, while the time of fast cooling event in this area is later than that in the southeast segment of the Xianshuihe fault zone (3.6-3.46 Ma).It appears to support the assumption of episodic uplift and stepwise outward extension of the eastern boundary of the Tibetan Plateau in late Cenozoic.

  18. Fission track dating of the Cenozoic uplift in Mabian area, southern Sichuan Province, China

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    The apparent ages of samples are obtained from fission track dating of apatite samples collected from the fault zones in Mabian area, southern Sichuan Province. In addition, thermal history is simulated from the obtained data by applying AFT Solve Program, to acquire the thermal evolution history of the samples. The result shows that tectonically the Mabian area was relatively stable between 25 and 3 Ma, compared to the inner parts and other marginal areas of the Tibetan Plateau. The studied area had little response to the rapid uplift events that occurred for several times in the Tibetan Plateau during 25-3 Ma. The latest thermal event related to the activity of the Lidian fault zone (about 8 Ma ) is later than that of the Ebian fault zone (18-15 Ma ) to the west, indicating to some extent that the evolution of fault activity in the Mabian area has migrated from west to east. The latest extensive tectonic uplift occurred since about 3 Ma. As compared with the Xianshuihe fault zone, the Mabian area is closer to the east- ern margin of the plateau, while the time of fast cooling event in this area is later than that in the southeast segment of the Xianshuihe fault zone (3.6-3.46 Ma ). It appears to support the assumption of episodic uplift and stepwise outward extension of the eastern boundary of the Tibetan Plateau in late Cenozoic.

  19. Embarazo en adolescentes del Policlínico “Rafael Valdés” en el año 2009

    Directory of Open Access Journals (Sweden)

    Melissa Serra Ruíz

    2011-11-01

    Full Text Available Fundamento: la situación del embarazo en la adolescencia es hoy una problemática de salud a nivel internacional, asociada a un incremento de la morbilidad materna. Objetivo: estimar la tasa de embarazo en adolescentes y caracterizar la morbilidad materna asociada. Método: estudio descriptivo y prospectivo, realizado en el Área de Salud del Policlínico “Rafael Valdés del Municipio Cotorro, durante el año 2009. La muestra estuvo constituida por 79 adolescentes gestantes, a las cuales se les solicitó el consentimiento informado para participar en la investigación. Las variables estudiadas fueron: afecciones durante el embarazo y complicaciones relacionadas, que se tomaron del carnet obstétrico y se procesaron mediante el sistema estadístico SPSS-11,5, utilizando frecuencias y porcentajes como técnicas de estadística descriptiva. Resultados: la tasa de embarazo en adolescentes en el año 2009, fue de 226 x 1000 y muestra una tendencia al aumento. La infección vaginal (98,7 %, la anemia (58,2 % y la bacteriuria asintomática (38 %, fueron las morbilidades más frecuentes. Conclusión: el embarazo en la adolescencia es un problema de salud que hoy está en aumento y que continúa siendo necesario investigar.

  20. La Mara, la historia interminable: La migración centroamericana en el relato neopolicial de Rafael Ramírez Heredia

    Directory of Open Access Journals (Sweden)

    Jaime Alberto Galgani

    2009-01-01

    Full Text Available La Mará es una de las obras de Rafael Ramírez Heredia que ¡ncursiona en el relato neopolicial latinoamericano. El presente artículo intenta verificar cómo el autor se apropia del género incorporando sus características particulares y llevando a la novela una de las problemáticas más graves, asociadas al fenómeno de la emigración en la frontera entre México y Guatemala, en donde confluyen aspectos relacionados con la violencia, el tráfico de drogas, la prostitución y la presencia de la Mará Salvatrucha, pandilla extendida, desde los Estados Unidos, a varios países del área centroamericana.I La Mará is one of Rafel Ramírez Heredias's works (Mexican, which ventures intothe Latin-American neo-detective narrative.Thisarticleaimsto present howwellthewriter uses thegenre.incorporatingits particular characteristics and discussing one of the most serious problems issues relating emigration on the border of México and Guatemala, where elements relating to violence, drug dealing, prostitution and the presence of Mará Salvatrucha, a gang which spreads from the United States to various countries in Central América.

  1. Un esbozo de traducción latina de la Reposta ahum papel de Moisés Rafael de Aguilar

    Directory of Open Access Journals (Sweden)

    Toribio Pérez, Pablo

    2013-12-01

    Full Text Available This article contains the text and Spanish translation of Johann Christoph Wolf’s (1683-1739 fragmentary draft of a Latin translation of portions of Moses Raphael d’Aguilar’s (d. 1679 Reposta ahum Papel. Wolf’s partial translation is preserved in Hamburg, Staats- und Universitätsbibliothek, Theol. 1831. The original Portuguese text is an anti-Christian work which was well known in a number of Protestant, anti-Trinitarian and atheistic circles during the eighteenth century. Its diffusion has been studied by Martin Mulsow; however, the text itself still lacks an edition.Se ofrece el texto y la traducción castellana del esbozo de traducción latina de la Reposta ahum papel de Moisés Rafael de Aguilar (m. 1679 que llevó a cabo Johann Christoph Wolf (1683-1739. El documento autógrafo de este intento de traducción se conserva en Hamburgo, Staats- und Universitätsbibliothek, Theol. 1831. El texto portugués original es un escrito anticristiano que conoció una considerable difusión en diversos círculos protestantes, antitrinitarios y ateos durante el siglo XVIII. Dicha difusión ha sido estudiada por Martin Mulsow; sin embargo, el texto en sí todavía carece de edición.

  2. Héroes de la civilización. La Amazonía como cosmópolis agroexportadora en la obra del General Rafael Reyes

    Directory of Open Access Journals (Sweden)

    Felipe Martínez Pinzón

    2014-02-01

    Full Text Available La pérdida del territorio de Panamá en 1903 y la consiguiente apertura de un canal en el istmo supusieron, para las elites colombianas, repensar otros espacios de frontera. Este artículo analiza el discurso de apropiación del territorio de la Amazonia que el presidente, general y empresario Rafael Reyes (1849-1921 expuso en discursos, conferencias, relatos de viaje y memorias autobiográficas. Haciendo uso de estos materiales, este artículo arguye que, en lugar de nacionalizar el territorio amazónico colombiano, Reyes propuso anexionarlo a las dinámicas del capitalismo global mediante la contradictoria propuesta de una “cosmópolis agroexportadora” para explotar las riquezas amazónicas. Las contradicciones de una cosmópolis segregacionista, como relato de la globalización a comienzos del siglo XX, también llevan al General Reyes a representar a los empresarios de la frontera agrícola como “héroes de la civilización”, una formulación que delata el anacronismo y la irracionalidad en el corazón del supuestamente inquebrantable y racional discurso de la civilización en el trópico.

  3. Héroes de la civilización. La Amazonía como cosmópolis agroexportadora en la obra del General Rafael Reyes

    Directory of Open Access Journals (Sweden)

    FELIPE MARTÍNEZ PINZÓN

    2013-12-01

    Full Text Available La pérdida del territorio de Panamá en 1903 y la consiguiente apertura de un canal en el istmo supusieron, para las élites colombianas, repensar otros espacios de frontera. Este artículo analiza el discurso de apropiación del territorio de la Amazonía que el presidente, general y empresario Rafael Reyes (1849-1921 expuso en discursos, conferencias, relatos de viaje y memorias autobiográficas. Haciendo uso de estos materiales, este artículo arguye que, en lugar de nacionalizar el territorio amazónico colombiano, Reyes propuso anexionarlo a las dinámicas del capitalismo global mediante la contradictoria propuesta de una "cosmópolis agroexportadora" para explotar las riquezas amazónicas. Las contradicciones de una cosmópolis segregacionista, como relato de la globalización a comienzos del siglo XX, también llevan al General Reyes a representar a los empresarios de la frontera agrícola como "héroes de la civilización", una formulación que delata el anacronismo y la irracionalidad en el corazón del supuestamente inquebrantable y racional discurso de la civilización en el trópico.

  4. FOTOGRAFÍA, TURISMO E IDENTIDAD NACIONAL EN EL PRIMER FRANQUISMO (1939-1959: RAFAEL CALLEJA Y LA APOLOGÍA TURÍSTICA DE ESPAÑA

    Directory of Open Access Journals (Sweden)

    María Ramón Gabriel

    2016-01-01

    Full Text Available Este trabajo se centra en el análisis de una obra de gran interés para entender la política turística del primer franquismo (1939-1959: Apología turística de España. Publicada en 1943 por la Dirección General de Turismo, fue editada y prologada por Rafael Calleja, en aquel entonces jefe de la Sección de Propaganda y Publicaciones del citado organismo, y contiene una selección de 439 fotografías de paisajes, monumentos y escenas y tipos humanos de las distintas regiones históricas españolas. Como se intenta mostrar en este artículo, esta obra compendia algunas de las claves principales del discurso turístico oficial del régimen, así como de su concepción de la identidad nacional española.

  5. Gaussian and mean curvatures of postglacial land uplift as expanded in surface spherical harmonics, and the origin of earthquakes in Fennoscandia

    Science.gov (United States)

    Ekman, M.

    Formula for Gaussian and mean curvatures of postglacial land uplift, as expanded in a series of surface spherical harmonics, are derived. These are then applied in investigating if postglacial land uplift is an origin of earthquakes. It is found that the postglacial land uplift of Fennoscandia probably is the origin of the earthquakes along the whole Swedish coast of the Gulf of Bothnia as well as possibly of those in northernmost Sweden, the earthquakes occurring mainly where the Gaussian curvature of land uplift is great enough. No such relationship exists for the earthquakes of southeastern Norway/southwestern Sweden, which then probably do not originate from the land uplift.

  6. Ice cap melting and low-viscosity crustal root explain the narrow geodetic uplift of the Western Alps

    Science.gov (United States)

    Chéry, J.; Genti, M.; Vernant, P.

    2016-04-01

    More than 10 years of geodetic measurements demonstrate an uplift rate of 1-3 mm/yr of the high topography region of the Western Alps. By contrast, no significant horizontal motion has been detected. Two uplift mechanisms have been proposed: (1) the isostatic response to denudation responsible for only a fraction of the observed uplift and (2) the rebound induced by the Wurmian ice cap melting which predicts a broader uplifting region than the one evidenced by geodetic observations. Using a numerical model to fit the geodetic data, we show that a crustal viscosity contrast between the foreland and the central part of the Alps, the latter being weaker with a viscosity of 1021 Pa s, is needed. The vertical rates are enhanced if the strong uppermost mantle beneath the Moho is interrupted across the Alps, therefore allowing a weak vertical rheological anomaly over the entire lithosphere.

  7. Geodetic measurements for monitoring rapid crustal uplift in southeastern Alaska caused by the recent deglaciation

    Science.gov (United States)

    Miura, S.; Sun, W.; Sugano, T.; Kaufman, A.; Sato, T.; Fujimoto, H.; Ohta, Y.; Larsen, C.; Freymueller, J.

    2008-12-01

    Glaciers at high latitudes are considered to be extremely sensitive to climate change and thus monitoring of glaciers is a clue to evaluate the future effect of global warming and the related phenomena. Ice mass changes also produce a time-variable surface load and give us useful data to investigate subsurface structure of the earth, especially to constrain the flow characteristics of the mantle. Larsen et al. [EPSL05] have extensively studied on vertical crustal movement in SE Alaska to reveal the world's fastest glacial isostatic uplifting, which can be attributed to the response associated with deglaciation. Displacement data, however, can only be used to constrain the sum of the elastic response to present-day ice melting (PDIM) and the viscoelastic one to past changes in ice. A Japan-US joint research project, ISEA (International geodetic research project in SouthEast Alaska), was initiated in 2005 to add new geodetic data and to refine the viscoelastic model derived by the previous studies. Absolute gravity data have been acquired at the five sites in the stdudy area using a Micro-g LaCoste absolute gravimeter, FG5#111. At each site data were collected over a 48~62 hour period. The long-term variation in absolute gravity at 2 stations, HNSG and BRM, where the measurements were performed in 1987 by Sasagawa et al. [JGR89] demonstrates rapid gravity decrease with rates of -4.4 micro-gal/yr, and -3.0 micro-gal/yr, respectively, and can be attributed to uplifting and mass-redstribution. ISEA supplements pre-existing continuous GPS (CGPS) stations operated by the U.S. Coast Guard (USCG) and the UNAVCO (Plate Boundary Observatory, PBO) and improves the spatial coverage in and around Glacier Bay. The time series of the site coordinates obtained for Queen Inlet (QUIC), which locates close to a zone of maximum uplift, shows obvious uplifting, even though there are long- term gaps because of an antenna cable trouble in 2006 and power outage in 2008 causing rather

  8. Quaternary outer fore-arc deformation and uplift inboard of the Panama Triple Junction, Burica Peninsula

    Science.gov (United States)

    Morell, Kristin D.; Fisher, Donald M.; Gardner, Thomas W.; La Femina, Peter; Davidson, Daniel; Teletzke, Allison

    2011-05-01

    The Panama Triple Junction (Cocos-Nazca-Caribbean) represents the point that abruptly separates the thick and rapidly subducting Cocos plate to the northwest from the thin and obliquely subducting Nazca plate to the southeast along the Central American convergent margin. New structural and geomorphic analyses on the Burica Peninsula, an outer fore-arc peninsula located only ˜100 km inboard the Panama Triple Junction, reveal that the peninsula is dominated primarily by contractional deformation along three listric thrust faults that root in the underlying plate boundary. The geometry and spatial distribution of these thrusts indicate that this deformation occurs primarily in response to the change in crustal thickness occurring as a result of eastern migration of the flank of the Cocos Ridge coeval with migration of the Panama Triple Junction at a rate of ˜55 mm/yr to the southeast. Mapping and detailed elevation surveys reveal eight marine terraces on the peninsula with a distribution of inner edge elevations indicating that uplift is spatially uniform from north to south along strike in this area. However, terraces along the northwest part of the peninsula are offset across major thrust faults. Age control provided by 14C, OSL and soil chronosequences indicate that the terraces within the easternmost portion of the peninsula range in age from Marine Isotope Stage (MIS) 3 to Holocene, a result that indicates that this portion of the peninsula is younger than ˜60 ka. Time-averaged uplift rates calculated from marine terraces and other Quaternary marine deposits yield consistent uplift rates that range between 2.1 ± 0.1 and 7.7 ± 0.5 mm/yr for samples older than 1 ka and between 6.9 ± 1.0 and 19.3 ± 8.0 mm/yr for samples younger than 1 ka. We interpret this temporal distribution in uplift rates to suggest that the eight terraces preserved on the peninsula are produced coseismically wherein the anomalously high uplift rates calculated from the youngest samples

  9. Crustal uplift due to ice mass variability on Upernavik Isstrøm, west Greenland

    Science.gov (United States)

    Nielsen, Karina; Khan, Shfaqat Abbas; Korsgaard, Niels J.; Kjær, Kurt H.; Wahr, John; Bevis, Michael; Stearns, Leigh A.; Timm, Lars H.

    2012-11-01

    We estimate the mass loss rate of Upernavik Isstrøm (UI) using surface elevation changes between a SPOT 5 Digital Elevation Model (DEM) from 2008 and NASA's Airborne Topographic Mapper (ATM) data from 2010. To assess the validity of our mass loss estimate, we analyze GPS data between 2007 and 2011 from two continuous receivers, UPVK and SRMP which are established on bedrock and located ∼65 and ∼2 km from the front of UI, respectively. We construct along-track elevation changes on UI for several time intervals during 2005-2011, based on ATM, SPOT 5 and Ice, Cloud, and land Elevation Satellite (ICESat) data to assess temporal changes of UI. We estimate a mass loss rate of -6.7±4.2 Gt/yr, over an area of ∼1600 km2. The ice mass loss occurs primarily over the northern glacier of UI. This pattern is also observed ∼40 km upstream, where we observe glacier thinning at a rate of -1.6±0.3 m/yr across the northern portion of UI and -0.5±0.1 m/yr across the southern portion. GPS measurements suggest bedrock uplift rates of 7.6±0.6 mm/yr (UPVK) and 16.2±0.6 mm/yr (SRMP). The modeled ice mass loss of UI causes bedrock uplift rates of 1.3±0.6 mm/yr (UPVK) and 8.3±4.2 mm/yr (SRMP). Including additional contributions from ice mass changes outside UI and from Glacial Isostatic Adjustment (GIA), we obtain total modeled uplift rates of 4.7±0.6 mm/yr (UPVK) and 13.8±4.2 mm/yr (SRMP). The modeled uplift rates from our UI ice mass loss are substantially lower, indicating that additional mass loss is taking place outside of UI. We obtain a difference of 0.6 mm/yr between the modeled and observed relative uplift rates (SRMP relative to UPVK), suggesting that the mass loss of UI is well captured in the model. We observe elevation changes from -15 to -40 m/yr near the front during the period 2005-2011, indicating that UI undergoes large variations in thinning pattern over short time spans.

  10. River path selection in response to uplift and interaction with alluvial fans

    Science.gov (United States)

    Grimaud, J. L.; Paola, C.; Voller, V. R.

    2015-12-01

    River systems construct stratigraphic successions and build land by depositing and redistributing sediments as they migrate across the entire basin. This mobility arises from the intrinsic variability of a river system but can also be forced by external changes. It is particularly observable in tectonically active basins where the basement can be partly uplifted and where sediments can come from multiple sources. Theoretically, the ability of these perturbations to steer channels depends on their capacity to create lateral topographic gradients at a faster rate than the aggradation. Following these lines, we present an experimental study on the impacts of lateral tilting by tectonics and lateral alluvial fans on rivers path. The experiment was conducted in the eXperimental Earth Scape facility, also known as the Jurassic tank, where the basement tilting rate can be monitored by controlling individually gravel subsidence through 108 hexagonal cells. The basin was relatively uplifted on one side of the tank according to an anticline-shape and sediments were input through two sources: a main, axial one and a lateral, secondary one. We analyzed the differences in the topographic signature and flow occupation of rivers in response to the uplift or the lateral sediment source as well as the competition of these forcing in the late stages of the experiments. We found that both tectonic tilting and fan activity tend to decrease the basin-wide channel mobility. Indeed, the area at the convergence of the two interacting fans is a long-lasting topographic low that tends to channelize the flow while areas away from it are less visited. The position of this boundary is correlated with the relative flow contribution from both fans. This highlights the self-healing capacity of fans that are able to rapidly restore a graded shape. As opposed to fans, an uplifted area will not heal but force rivers to carve long-lasting valleys and increase the relief. When eroded, these uplifted

  11. Analytical model of surface uplift above axisymmetric flat-lying magma intrusions: Implications for sill emplacement and geodesy

    OpenAIRE

    Galland, Olivier; Scheibert, Julien

    2013-01-01

    58 pages, 17 figures, 2 tables. Accepted in Journal of Volcanology and Geothermal Research; International audience; In this paper, we develop a new axisymmetric analytic model of surface uplift upon sills and laccoliths, based on the formulation of a thin bending plate lying on an elastic foundation. In contrast to most former models also based on thin bending plate formulation, our model accounts for (i) axi-symmetrical uplift, (ii) both upon and outside the intrusion. The model accounts for...

  12. Combining information preserved in fluvial topography and strath terraces to extract rock uplift rates in the Apennines

    Science.gov (United States)

    Fox, M.; Brandon, M. T.

    2015-12-01

    Longitudinal river profiles respond to changes in tectonic uplift rates through climate-modulated erosion. Therefore, rock uplift rate information should be recorded in fluvial topography and extracting this information provides crucial constraints on tectonic processes. In addition to the shape of the modern river profile, paleo-river profiles can often be mapped in the field by connecting strath terraces. These strath terraces act as markers that record complex incision histories in response to rock uplift rates that vary in space and time. We exploit an analytical linear solution to the linear version (n=1) of the stream-power equation to efficiently extract uplift histories from river networks and strath terraces. The analytical solution is based on the transient solution to the linear version (n=1) of the stream-power equation. The general solution to this problem states that the elevation of a point in a river channel is equal to the time integral of its uplift history, where integration is carried out over the time required for an uplift signal to propagate from the baselevel of the river network to the point of interest. A similar expression can be written for each strath terrace in the dataset. Through discretization of these expressions into discrete timesteps and spatial nodes, a linear system of equations can be solved using linear inverse methods. In this way, strath terraces and river profiles can be interpreted in an internally consistent framework, without the requirement that the river profile is in a steady state. We apply our approach to the Northern Apennines where strath terraces have been extensively mapped and dated. Comparison of our inferred rock uplift rate history with modern rock uplift rates enables us to distinguish short-term deformation on a buried thrust fault with long-term mountain building processes.

  13. Age estimates and uplift rates for late Pleistocene marine terraces: Southern Oregon portion of the Cascadia forearc

    Energy Technology Data Exchange (ETDEWEB)

    Muhs, D.R.; Whelan, J.F. (Geological Survey, Denver, CO (United States)); Kelsey, H.M.; McInelly, G.W. (Western Washington Univ., Bellingham (United States)); Miller, G.H. (Univ. of Colorado, Boulder (United States)); Kennedy, G.L. (Los Angeles County Museum of Natural History, CA (United States))

    1990-05-10

    Interest in the Cascadia subduction zone has increased because recent investigations have suggested that slip along plates at certain types of convergent margins is characteristically accompanied by large earthquakes. In addition, other investigations have suggested that convergent margins can be broadly classified by the magnitude of their uplift rates. The authors generated new uranium series, amino acid, and stable isotope data for southern Oregon marine terrace fossils. These data, along with terrace elevations and two alternative estimates of sea level at the time of terrace formation, allow one to determine terrace ages and uplift rates. Uranium series analysis of fossil coral yields an age of 83 {plus minus} 5 ka for the Whisky Run terrace at Coquille Point in Bandon, Oregon. A combination of amino acid and oxygen isotope data suggest ages of about 80 and 105 ka for the lowest two terraces at Cape Blanco. These ages indicate uplift rates of 0.45-1.05 and 0.81-1.49 m/kyr for Coquille Point and Cape Blanco, respectively. In order to assess the utility of the southern Oregon uplift rates for predicting the behavior of the Cascadia subduction zone, the authors compared late Quaternary uplift rates derived from terrace data from subduction zones around the world. On the basis of this comparison the southern Oregon rates of vertical deformation are not usually high or low. Furthermore, late Quaternary uplift rates show little relationship to the type of convergent margin. In the case of the southern Oregon coast, variability in uplift rate probably reflects local structures in the overriding plate, and the rate of uplift cannot be used as a simple index of the potential for great earthquakes along the southern Cascadia subduction zone.

  14. The estimation of future surface water bodies at Olkiluoto area based on statistical terrain and land uplift models

    Energy Technology Data Exchange (ETDEWEB)

    Pohjola, J.; Turunen, J.; Lipping, T. [Tampere Univ. of Technology (Finland); Ikonen, A.

    2014-03-15

    In this working report the modelling effort of future landscape development and surface water body formation at the modelling area in the vicinity of the Olkiluoto Island is presented. Estimation of the features of future surface water bodies is based on probabilistic terrain and land uplift models presented in previous working reports. The estimation is done using a GIS-based toolbox called UNTAMO. The future surface water bodies are estimated in 10 000 years' time span with 1000 years' intervals for the safety assessment of disposal of spent nuclear fuel at the Olkiluoto site. In the report a brief overview on the techniques used for probabilistic terrain modelling, land uplift modelling and hydrological modelling are presented first. The latter part of the report describes the results of the modelling effort. The main features of the future landscape - the four lakes forming in the vicinity of the Olkiluoto Island - are identified and the probabilistic model of the shoreline displacement is presented. The area and volume of the four lakes is modelled in a probabilistic manner. All the simulations have been performed for three scenarios two of which are based on 10 realizations of the probabilistic digital terrain model (DTM) and 10 realizations of the probabilistic land uplift model. These two scenarios differ from each other by the eustatic curve used in the land uplift model. The third scenario employs 50 realizations of the probabilistic DTM while a deterministic land uplift model, derived solely from the current land uplift rate, is used. The results indicate that the two scenarios based on the probabilistic land uplift model behave in a similar manner while the third model overestimates past and future land uplift rates. The main features of the landscape are nevertheless similar also for the third scenario. Prediction results for the volumes of the future lakes indicate that a couple of highly probably lake formation scenarios can be identified

  15. Atmospheric CO2 Consumption in Uplifting Mountain Ranges: New Insight From the New Zealand Southern Alps

    Science.gov (United States)

    Jacobson, A. D.; Blum, J. D.; Chamberlain, C. P.

    2004-12-01

    Rates of physical erosion and chemical weathering in uplifting mountain ranges are generally higher than the rates observed in tectonically stable regions. This observation has led to the hypothesis that orogenic events lead to global cooling over geologic time scales by accelerating the rate of atmospheric CO2 drawdown from silicate weathering. However, recent studies of rivers draining the rapidly uplifting Himalaya Mountains have demonstrated that much of the chemical weathering flux is dominated by carbonate dissolution, which does not influence long-term atmospheric CO2 levels. To examine if carbonate weathering dominates in other orogenic environments, we have undertaken investigations of rivers draining the New Zealand Southern Alps, which present a largely unexplored setting for systematically examining tectonic controls on the carbon cycle. In particular, we quantified rates of physical erosion and both silicate and carbonate weathering across a gradient of variable uplift rates but constant bedrock composition. We also compared the findings to global mean values as well as to data for major world rivers in other tectonic and climatic settings. Rapid uplift in the western Southern Alps elevates mechanical erosion rates by a factor of ~13 relative to those on the tectonically stable eastern side. Similarly, the average chemical weathering rate is ~5 times higher on the western compared to eastern side of the mountain range. However, because the proportion of stream-water Ca2+ and Mg2+ from the weathering of trace hydrothermal calcite increases as the rate of mechanical erosion increases, the long-term atmospheric CO2 consumption rate on the western side is only ~2 times higher than that on the eastern side and only ~1.5 times higher than the global mean value. These data demonstrate that tectonic uplift in the New Zealand Southern Alps accelerates physical erosion and chemical weathering rates but does not greatly enhance the rate of long-term atmospheric

  16. Challenges of Holocene sea-level reconstructions in area of low uplift rate

    Science.gov (United States)

    Grudzinska, Ieva; Vassiljev, Jüri; Stivrins, Normunds

    2017-04-01

    Isolated coastal water bodies provide an excellent sedimentary archive of the evolutionary stages of the coastal regions. It is relatively easy to determine lake isolation threshold, time and contact, where marine and brackish diatoms are replaced by halophilous and subsequently by freshwater diatoms, in areas with high land uplift rates and hard bedrock. Whereas, in areas where the land uplift rate is near zero and sedimentary cover of sand, silt and/or clay exists, determination of the lake isolation threshold and time is a rather complicated task. Such an area is the coast of the Gulf of Riga, where the apparent land uplift is about 1 mm yr-1 in the northern part and near zero in the southern part of the area. The aim of the study is to improve the understanding of the nature and extent of the Holocene sea level changes in the eastern Baltic Sea region, in the area with low land uplift rate. This study marks the first attempt to reconstruct sea level changes for a wide variety of settings based on high-resolution bio-, litho-, and chronostratigraphical evidence from sediment records of isolation basins in Latvia. In total, eight lakes were studied in order to revise the relative sea level (RSL) changes at the southern coast of the Gulf of Riga based on new litho- and biostratigraphical data and radiocarbon datings. The palaeogeographical reconstruction was challenging because we had to take into account that the process of isolation was influenced by various factors, such as gradual eustatic sea level (ESL) rise, river delta infilling by sediments and long-shore sediment transport. The water level in the Baltic Sea basin until 8,500 cal BP was influenced primarily by deglaciation dynamics, whereas in the last 8,500 years, the main factor was complicated interplay between the ESL rise and the land uplift rate. According to diatom composition and radiocarbon dates, the Litorina Sea transgression was a long-lasting event (ca. 2,200 years) in the southern part of

  17. 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.

  18. 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.

  19. UPLIFTING TECHNOLOGY

    National Research Council Canada - National Science Library

    Thomas K Grose

    2015-01-01

      Inspired by Star Trek turbolifts, German engineering firm ThyssenKrupp says it's ready to replace cables and pulleys using maglev, or magnetic levitation technology, that enables the world's fastest...

  20. Late Pleistocene and Holocene uplift history of Cyprus: implications for active tectonics along the southern margin of the Anatolian microplate

    Science.gov (United States)

    Harrison, R.W.; Tsiolakis, E.; Stone, B.D.; Lord, A.; McGeehin, J.P.; Mahan, S.A.; Chirico, P.

    2013-01-01

    The nature of the southern margin of the Anatolian microplate during the Neogene is complex, controversial and fundamental in understanding active plate-margin tectonics and natural hazards in the Eastern Mediterranean region. Our investigation provides new insights into the Late Pleistocene uplift history of Cyprus and the Troodos Ophiolite. We provide isotopic (14C) and radiogenic (luminescence) dates of outcropping marine sediments in eastern Cyprus that identify periods of deposition during marine isotope stages (MIS) 3, 4, 5 and 6. Past sea-levels indicated by these deposits are c. 95±25 m higher in elevation than estimates of worldwide eustatic sea-level. An uplift rate of c. 1.8 mm/year and possibly as much as c. 4.1 mm/year in the past c. 26–40 ka is indicated. Holocene marine deposits also occur at elevations higher than those expected for past SL and suggest uplift rates of c. 1.2–2.1 mm/year. MIS-3 marine deposits that crop out in southern and western Cyprus indicate uniform island-wide uplift. We propose a model of tectonic wedging at a plate-bounding restraining bend as a mechanism for Late Pleistocene to Holocene uplift of Cyprus; uplift is accommodated by deformation and seismicity along the margins of the Troodos Ophiolite and re-activation of its low-angle, basal shear zone.

  1. Late Quaternary slip history of the Mill Creek strand of the San Andreas fault in San Gorgonio Pass, southern California: The role of a subsidiary left-lateral fault in strand switching

    Science.gov (United States)

    Kendrick, Katherine J.; Matti, Jonathan; Mahan, Shannon

    2015-01-01

    The fault history of the Mill Creek strand of the San Andreas fault (SAF) in the San Gorgonio Pass region, along with the reconstructed geomorphology surrounding this fault strand, reveals the important role of the left-lateral Pinto Mountain fault in the regional fault strand switching. The Mill Creek strand has 7.1–8.7 km total slip. Following this displacement, the Pinto Mountain fault offset the Mill Creek strand 1–1.25 km, as SAF slip transferred to the San Bernardino, Banning, and Garnet Hill strands. An alluvial complex within the Mission Creek watershed can be linked to palinspastic reconstruction of drainage segments to constrain slip history of the Mill Creek strand. We investigated surface remnants through detailed geologic mapping, morphometric and stratigraphic analysis, geochronology, and pedogenic analysis. The degree of soil development constrains the duration of surface stability when correlated to other regional, independently dated pedons. This correlation indicates that the oldest surfaces are significantly older than 500 ka. Luminescence dates of 106 ka and 95 ka from (respectively) 5 and 4 m beneath a younger fan surface are consistent with age estimates based on soil-profile development. Offset of the Mill Creek strand by the Pinto Mountain fault suggests a short-term slip rate of ∼10–12.5 mm/yr for the Pinto Mountain fault, and a lower long-term slip rate. Uplift of the Yucaipa Ridge block during the period of Mill Creek strand activity is consistent with thermochronologic modeled uplift estimates.

  2. 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

  3. 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....

  4. 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...

  5. 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...

  6. 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...

  7. 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...

  8. 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...

  9. 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...

  10. 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...

  11. 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...

  12. 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...

  13. 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.

  14. 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...

  15. 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...

  16. Tradición, vanguardia y poética en Madrigal al billete de tranvía de Rafael Alberti

    Directory of Open Access Journals (Sweden)

    Macciuci, Raquel

    2009-12-01

    Full Text Available The dialogical relation that the Spanish Vanguard settled with tradition —a usual phenomenon also in Latinamerica— has given place to parceled interpretations of the art and literature of the early XXth century, and, specially, of the poetry of the so-called «Generación del 27». During the last two decades, critical approaches has shown that the alliance between the past and «the new» is far from being an obstacle that condemns the Spanish «ismos» to be seen as inauthentic ones, and therefore to be accused of not having the transformative impulse that characterized the artistic projects of the early modernized European countries. Based on the recent works that have reviewed these premises (Soria, Olmedo, Geist, Bosi, García Montero, Wilson..., the purpose of this article is to analyze the well known (and many times cited Rafael Alberti’s poem «Madrigal al billete de tranvía», with the aim to explore, in a creative text, the manifestations of a vanguardist aesthetic that re-elaborated the lyric models inherited from the tradition. In addition to this, this article aims to show that, below the hermeticism of the «neo-Gongorian» madrigal discourse, lies the brief manifesto of a poetics whose decipherment enriches the interpretations of Alberti’s works during the 20s.El diálogo que la vanguardia española entabló con la tradición —fenómeno común también a Latinoamérica— ha dado lugar a interpretaciones parceladas del arte y de la literatura del temprano siglo XX, y muy especialmente, de la poesía de la llamada Generación del 27. En las últimas dos décadas, las aproximaciones de la crítica han demostrado que la alianza entre el pasado y lo nuevo está lejos de constituir una rémora que condena a los ismos hispánicos a arrastrar un estigma de inautenticidad, acusados de carecer del impulso transformador de los programas artísticos de los países europeos tempranamente modernizados. A partir de las recientes

  17. Timectomía por miastenia gravis en el Hospital Dr. Rafael Angel Calderón Guardia: Reporte de 24 casos

    Directory of Open Access Journals (Sweden)

    José A Mainieri Hidalgo

    2000-06-01

    Full Text Available Antecedentes: La miastenia gravis es una enfermedad autoinmune cuya etiología aún no está claramente definida. Desde 1912 se describió mejoría del cuadro posterior a timectomía. Este procedimiento es actualmente una de las formas aceptadas para su tratamiento. El objetivo del presente trabajo fue estudiar los resultados de la timectomía para el tratamiento de la miastenia gravis en el Hospital Rafael Angel Calderón Guardia. Materiales y Métodos: Estudio retrospectivo, basado en la revisión de los expedientes de 24 pacientes, a quienes se les realizó timectomía como parte de su tratamiento de miastenia gravis entre enero de 1992 y mayo de 1999, en el Hospital Dr. Rafael Angel Calderón Guardia. Resultados: Se encontró que un 75% de los pacientes presentaron una franca mejoría, 17% permaneció en igual condición y un 8% empeoró. No se observó diferencia en la evolución por sexo, edad o la presencia de timoma, sin embargo en los pacientes que presentaban únicamente síntomas oculares se dio una tendencia a persistir sintomáticos. Se observó que la preparación pre-operatoria del paciente con gamaglobulina y la modernización de la técnica anestésica disminuyó notablemente la necesidad de ventilación mecánica. Conclusión: La timectomía fue útil en el tratamiento del 75% de los pacientes, especialmente aquellos con no sólo ptosis palpebral y permitió disminuir la dosis de medicamentos en 12 de los 24 casos estudiados.Background: Miastenia gravis is an autoimmune disease, its etiology has not been defined clearly. The improvement of the clinical manifestations after thymectomy was first describes in 1912; and this procedure has become in one of the therapeutic alternativas for the disease nowadays. The aim of the present study was to investigase the results of thymectomy for miastenia gravis in the Hospital Dr. R. A. Calderón Guardia. Materials and Methods: Retrospective study, based in the revision of the clinical

  18. El ascenso político de la élite periodística: Rafael Gasset primer Ministro de Agricultura, Industria, Comercio y Obras públicas

    Directory of Open Access Journals (Sweden)

    Juan Carlos SÁNCHEZ ILLÁN

    2010-02-01

    Full Text Available RESUMEN: El caso de Rafael Gasset, propietario y director de "El Imparcial", sirve como modelo ilustrativo del ascenso político y social protagonizado por las élites salidas del periodismo desde fines del siglo XIX. El protagonismo político asumido por Gasset en la crítica coyuntura del 98 sería inexplicable sin tener en cuenta el crédito que le confería su periódico, el diario de más influencia en la España de la Restauración. Todo partido y todo líder político necesitaban en aquellos momentos ejercer algún tipo de control e influencia sobre un gran periódico. Sin él, la jefatura y los partidos no valían nada. Por ello, el periodismo era ya, a fines del siglo XIX, uno de los medios más representativos de ascenso en la política profesional y en el liderazgo social. Las campañas periodísticas de "El imparcial" (Madrid, 1867-1933 fueron, durante décadas, decisivas en la creación de estados de opinión. Estas campañas serían el medio utilizado por Gasset para influir sobre los medios oficiales y para integrarse, de ese modo, en la élite gobernante del régimen de la Restauraciuón. Esta integración se produjo al ser nombrado ministro de Agricultura por Francisco Silvela en abril de 1900. La estrecha vinculación existente desde entonces entre los intereses políticos y periodísticos del nuevo ministro, sin embargo, habría de pagarla muy cara su órgano de información, en términos de pérdida de credibilidad y prestigio entre el público lector independiente. Palabras Clave: Restauración Española, Élites políticas, Periodismo, Opinión pública, Política de masas. ABSTRACT: The case of Rafael Gasset, owner and director of "El Imparcial", serves as a model of the social and political rise of the élite that emerged from journalism at the end of the 19th century. Gasset's political protagonism in the crucial times of 98 would be inexplicable without taking into account the authority conferred by his newspaper, the

  19. Differential uplift and incision of the Yakima River terraces, central Washington State

    Science.gov (United States)

    Bender, Adrian M; Amos, Colin B.; Bierman, Paul R.; Rood, Dylan; Staisch, Lydia; Kelsey, Harvey M.; Sherrod, Brian

    2016-01-01

    The fault-related Yakima folds deform Miocene basalts and younger deposits of the Columbia Plateau in central Washington State. Geodesy implies ~2 mm/yr of NNE directed shortening across the folds, but until now the distribution and rates of Quaternary deformation among individual structures has been unclear. South of Ellensburg, Washington, the Yakima River cuts a ~600 m deep canyon across several Yakima folds, preserving gravel-mantled strath terraces that record progressive bedrock incision and related rock uplift. Here we integrate cosmogenic isochron burial dating of the strath terrace gravels with lidar analysis and field mapping to quantify rates of Quaternary differential incision and rock uplift across two folds transected by the Yakima River: Manastash and Umtanum Ridge. Isochron burial ages from in situ produced 26Al and 10Be at seven sites across the folds date episodes of strath terrace formation over the past ~2.9 Ma. Average bedrock incision rates across the Manastash (~88 m/Myr) and Umtanum Ridge (~46 m/Myr) anticlines are roughly 4 to 8 times higher than rates in the intervening syncline (~14 m/Myr) and outside the canyon (~10 m/Myr). These contrasting rates demonstrate differential bedrock incision driven by ongoing Quaternary rock uplift across the folds at rates corresponding to ~0.13 and ~0.06 mm/yr shortening across postulated master faults dipping 30 ± 10°S beneath the Manastash and Umtanum Ridge anticlines, respectively. The reported Quaternary shortening across the anticlines accounts for ~10% of the ~2 mm/yr geodetic budget, suggesting that other Yakima structures actively accommodate the remaining contemporary deformation.

  20. The topographic signature of Quaternary tectonic uplift in the Ardennes massif (Western Europe

    Directory of Open Access Journals (Sweden)

    N. Sougnez

    2011-04-01

    Full Text Available Geomorphic processes that produce and transport sediment, and incise river valleys are complex; and often difficult to quantify over longer timescales of 103 to 105 y. Morphometric indices that describe the topography of hill slopes, valleys and river channels have commonly been used to compare morphological characteristics between catchments and to relate them to hydrological and erosion processes. This study aims to analyze the link between tectonic uplift rates and landscape morphology based on slope and channel morphometric indexes. To achieve this objective, we selected 10 catchments of about 150 to 250 km2 across the Ardennes Massif (a Palaeozoic massif of NW Europe, principally located in Belgium that cover various tectonic domains with uplift rates ranging from about 0.06 to 0.20 mm yr−1 since mid-Pleistocene times. The morphometric analysis indicates that the slope and channel morphology of third-order catchments is not yet in topographic steady-state, and exhibits clear convexities in slope and river profiles. Our analysis indicates that the fluvial system is the main driver of topographic evolution and that the spatial pattern of uplift rates is reflected in the distribution of channel steepness and convexity. The spatial variation that we observe in slope and channel morphology between the 10 third-order catchments suggests that the response of the fluvial system was strongly diachronic, and that a transient signal of adjustment is migrating from the Meuse valley towards the Ardennian headwaters.

  1. Deep intrusions, lateral magma transport and related uplift at ocean island volcanoes

    Science.gov (United States)

    Klügel, Andreas; Longpré, Marc-Antoine; García-Cañada, Laura; Stix, John

    2015-12-01

    Oceanic intraplate volcanoes grow by accumulation of erupted material as well as by coeval or discrete magmatic intrusions. Dykes and other intrusive bodies within volcanic edifices are comparatively well studied, but intrusive processes deep beneath the volcanoes remain elusive. Although there is geological evidence for deep magmatic intrusions contributing to volcano growth through uplift, this has rarely been demonstrated by real-time monitoring. Here we use geophysical and petrological data from El Hierro, Canary Islands, to show that intrusions from the mantle and subhorizontal transport of magma within the oceanic crust result in rapid endogenous island growth. Seismicity and ground deformation associated with a submarine eruption in 2011-2012 reveal deep subhorizontal intrusive sheets (sills), which have caused island-scale uplift of tens of centimetres. The pre-eruptive intrusions migrated 15-20 km laterally within the lower oceanic crust, opening pathways that were subsequently used by the erupted magmas to ascend from the mantle to the surface. During six post-eruptive episodes between 2012 and 2014, further sill intrusions into the lower crust and upper mantle have caused magma to migrate up to 20 km laterally, resulting in magma accumulation exceeding that of the pre-eruptive phase. A comparison of geobarometric data for the 2011-2012 El Hierro eruption with data for other Atlantic intraplate volcanoes shows similar bimodal pressure distributions, suggesting that eruptive phases are commonly accompanied by deep intrusions of sills and lateral magma transport. These processes add significant material to the oceanic crust, cause uplift, and are thus fundamentally important for the growth and evolution of volcanic islands. We suggest that the development of such a magma accumulation zone in the lower oceanic crust begins early during volcano evolution, and is a consequence of increasing size and complexity of the mantle reservoir system, and potentially

  2. Uplift of the Transantarctic Mountains and the bedrock beneath the East Antarctic ice sheet

    Science.gov (United States)

    ten Brink, U.S.; Hackney, R.I.; Bannister, S.; Stern, T.A.; Makovsky, Y.

    1997-01-01

    In recent years the Transantarctic Mountains (TAM), the largest noncontractional mountain belt in the world, have become the focus of modelers who explained their uplift by a variety of isostatic and thermal mechanisms. A problem with these models is a lack of available data to compare with model predictions. We report here the results of a 312-km-long geophysical traverse conducted in 1993/1994 in the hinterland of the TAM. Using detailed subglacial topography and gravity measurements, we confirm the origin of the TAM as a flexural uplift of the edge of East Antarctica. Using an elastic model with a free edge, we can jointly fit the topography and the gravity with a plate having an elastic thickness of 85 ?? 15 km and a preuplift elevation of 700 ?? 50 m for East Antarctica. Using a variety of evidence, we argue that the uplift is coincident with a relatively minor tectonic event of transtensional motion between East and West Antarctica during the Eocene rather than the Late Cretaceous rifting event that created the Ross Embayment. We suggest that this transtensional motion caused the continuous plate to break, which created an escarpment that significantly increased the rates of erosion and exhumation. Results from the geophysical traverse also extend our knowledge of the bedrock geology from the exposures within the TAM to the ice covered interior. Our interpretation suggests that the Ferrar flood basalts extend at least 100 km westward under the ice. The Beacon Supergroup of Paleozoic and Mesozoic sediments thins gradually under the ice and its reconstructed thickness is reminiscent of profiles of foreland basins. Finally, there is no indication in the gravity field for an incomplete rebound due to significant melting of the East Antarctic ice sheet since the last glacial period.

  3. Pattern and timing of late Cenozoic rapid exhumation and uplift of the Helan Mountain,China

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The Helan Mountain, an intraplate deformation belt in the North China Craton, is located in the northern portion of the China North-South seismic belt, and at the northwestern margin of the Ordos Block. The Cenozoic deformation history of the Helan Mountain is characterized by extension along the eastern Helan Mountain fault (EHSF), resulting in the exhumation and uplift of the Helan Mountain, relative to the rifting of the adjacent Yinchuan Basin. Here we present new apatite fission track (AFT) data from several transects adjacent to the EHSF in the central and northern Helan Mountain. AFT ages from the northern Helan Mountain (Dawukou and Zhengyiguan transects) range from 10 Ma to 89 Ma, whereas AFT ages from the southern Helan Mountain (Suyukou transect) are greater than 71 Ma. The AFT data analysis reveals initiation of rapid uplift and exhumation of the Helan Mountain at 10–12 Ma. Additionally, a plot of the AFT ages versus their mean track length shows a distinctive "boomerang" pattern indicating that the Helan Mountain experienced a discrete phase of accelerated exhumation beginning at 10-12 Ma. Spatially, AFT samples systematically increase in age away from the EHSF and are consistent with late Cenozoic exhumation that was slow in the southwestern Helan Mountain and rapid in the northeastern Helan Mountain, as well more rapid adjacent to the EHSF and slower away from the EHSF. Obviously, the spatial distribution of late Cenozoic exhumation indicates that normal faulting of the EHSF is related to southwestward tilting and rapid exhumation of the Helan Mountain beginning at 10–12 Ma. The uplift and exhumation of the Helan Mountain was a response to the intensive extension of the northwestern margin of the Ordos Block in the late Cenozoic; this occurred under a regional extensional stress field oriented NW-SE along the Yinchuan-Jilantai-Hetao and the Weihe-Shanxi graben systems adjacent to the Ordos Block.

  4. Primary succession and dynamics of Norway spruce coastal forests on land-uplift ground moraine

    Energy Technology Data Exchange (ETDEWEB)

    Svensson, J.S.; Jeglum, J.K. [Swedish Univ. of Agricultural Sciences, Umeaa (Sweden). Dept of Forest Ecology

    2000-07-01

    This paper is an overview of primary succession on the rising coastlines of the Gulf of Bothnia, which emphasises Norway spruce succession and forest development and identifies topics for research. It is concluded that continuing postglacial rebound provides excellent successional sequences, and an exceptional opportunity to add new and important knowledge on original forest ecosystem development. First, long-term undisturbed forest seres, terminating in climax-like Norway spruce forest, exist. Secondly, a well-stocked, old growth spruce forest can develop on the (generally) fairly productive mesic ground-moraine sites in a short ecological time. Thirdly, undisturbed successional sequences, which go back to original soil formation, permit reconstruction of ecosystems' developmental history. Fourthly, the relationship between ground elevation and land-uplift rate facilitates estimates of ground age, and consequently permits a four-dimensional study approach. Fifthly, in view of extensive anthropogenic influence in boreal Fennoscandian forests, the few remaining natural spruce forests should be recognised and carefully documented. From our review of the literature, we conclude that present knowledge of the succession of Norway spruce on emerging shorelines, and the part played by land uplift and other factors, is fragmentary. Attention should be given to initial spruce seedling colonisation relative to factors such as sea-water level, exposure (winds, fetch), parent material, seedbed types, potential seed source (isolation), and island size. Possible multiple pathways of Norway spruce primary succession relative to temporal changes in exposure and other factors, have so far received little research effort. Attention also should be paid to the response of spruce populations to site maturation, i.e. to increasing ground age based on land-uplift rate and elevation above sea level. Finally, attention should be paid to autogenic processes in spruce-dominated stages

  5. Pronounced central uplift identified in the Bosumtwi impact structure, Ghana, using multichannel seismic reflection data

    Science.gov (United States)

    Scholz, Christopher A.; Karp, Tobias; Brooks, Keely M.; Milkereit, Bernd; Amoako, Philip Y. O.; Arko, Justice A.

    2002-10-01

    The Lake Bosumtwi impact structure is the youngest and best-preserved complex terrestrial impact crater and serves as an important reference site for the study of cratering processes. Because the impacting body struck continental crystalline target rocks and not a submerged sedimentary platform, no significant backwash processes have modified the crater morphology. Not only may Bosumtwi contain the best-preserved central uplift structure on Earth, but it is the most accessible relatively large, young crater in the solar system generated in a large gravity field. There is a well-established link between the Lake Bosumtwi impact structure and the Ivory Coast tektite field, and the lacustrine sediments within the crater contain a unique 1 m.y. record of paleoclimate in the continental tropics south of the Sahel. Eight profiles of marine-type multichannel seismic reflection (MCS) data were acquired from the 8-km-diameter, ˜75-m-deep lake that fills much of the crater. These were augmented by wide-angle seismic data acquired with ocean-bottom hydrophones. MCS data reveal a well-defined central uplift near the northwest-central part of the lake and a maximum postimpact lacustrine sediment thickness of ˜310 m. The central uplift structure has a diameter of 1.9 km and a maximum height of 130 m above the annular moat inside the crater. An intermediate velocity layer (3200 m/s) beneath the lacustrine sediment is interpreted as fallback breccia or a breccia-melt horizon. The measured apparent depth of the crater (da) is 500 m, implying a slightly higher aspect ratio for the structure than predicted from published empirical relationships. The Bosumtwi structure is a small complex crater that deviates slightly from trends predicted from classical scaling laws, perhaps because of the effects of a large gravity field.

  6. Rheology of the lithosphere inferred from postseismic uplift following the 1959 Hebgen Lake earthquake

    Science.gov (United States)

    Nishimura, T.; Thatcher, W.

    2003-01-01

    We have modeled the broad postseismic uplift measured by geodetic leveling in the epicentral area of the 1959 Mw = 7.3 Hebgen Lake, Montana earthquake, a normal faulting event in the northern Basin and Range province. To fit the observed uplift we calculate synthetic postseismic deformation using the relaxation response of a gravitational viscoelastic Earth to the earthquake. For a model with an elastic plate overlying a viscoelastic half-space, we find that the elastic thickness is 38 ?? 8 km, which isclose to the local crustal thickness. The half-space viscosity is estimated at 4 ?? 1018??0.5 Pa s. The leveling data do not require a viscous lower crust but permit a lower bound viscosity of 1020 Pa s. The observed broad uplift cannot be explained by physically plausible afterslip on and below the coseismic fault. However, local deformation across the coseismic surface rupture requires shallow afterslip reaching the surface. The postseismic deformation induced by the estimated viscoelastic structure decays exponentially with a time constant of ???15 years. Because of coupling between the elastic layer and the viscoelastic substrate, this relaxation time is significantly longer than the 2 year Maxwell relaxation time of the viscous half-space itself. Our result suggests the importance of postseismic relaxation in interpreting high-precision global positioning system velocities. For example, our model results suggest that postseismic transient velocities from both the 1959 Hebgen Lake and the 1983 Mw = 6.9 Borah Peak earthquakes are currently as large as 1-2 mm/yr.

  7. La genealogía de los reglamentos escolares en México: análisis de la obra de Rafael Ramírez

    Directory of Open Access Journals (Sweden)

    Ana Cecilia Valencia Aguirre

    2011-01-01

    Full Text Available Este trabajo es resultado de un análisis cuya pregunta central es ¿Cuál es la genealogía de los reglamentos en las escuelas de educación primaria en México? el objetivo es analizar la obra de Rafael Ramírez, a través de la literatura formativa de los profesores, considerada un elemento fundacional de los mandatos institucionales de la escuela primaria, ya que genera un discurso que instituye la normatividad en la escuela básica mexicana. El método utilizado es el análisis crítico del discurso de Van Dijk, los actos de habla de Searle y la perspectiva de las metáforas de la vida cotidiana de Lakoff. La hipótesis que orienta la indagación plantea que los primeros pasos de la institucionalización del control escolar estuvieron atravesados por el discurso cristiano-católico expresado en diversos interdiscursos de la época y fundamentalmente en los reglamentos escolares que comenzaron a aparecer como parte de la literatura formativa de los profesores de escuelas primarias. Dicho análisis permite concluir que esta literatura refleja gran parte del imaginario de los profesores de escuelas públicas, ya que expresa un nacionalismobasado en el imaginario de la familia nuclear cristiana, elemento clave que configuró una de las imágenes más vivas en la conformación del estado mexicano posrevolucionario.

  8. Masses of Fluid for Cylindrical Tanks in Rock With Partial Uplift of Bottom Plate.

    Science.gov (United States)

    Taniguchi, Tomoyo; Katayama, Yukihiro

    2016-10-01

    This study proposes the use of a slice model consisting of a set of thin rectangular tanks for evaluating the masses of fluid contributing to the rocking motion of cylindrical tanks; the effective mass of fluid for rocking motion, that for rocking-bulging interaction, effective moment inertia of fluid for rocking motion and its centroid. They are mathematically or numerically quantified, normalized, tabulated, and depicted as functions of the aspect of tanks for different values of the ratio of the uplift width of the tank bottom plate to the diameter of tank for the designer's convenience.

  9. Deformation and failure mechanism of excavation in clay subjected to hydraulic uplift

    CERN Document Server

    Hong, Yi

    2016-01-01

    This book presents the latest experimental and numerical analysis work in the field of ground deformation and base instability of deep excavations in soft clay subjected to hydraulic uplift. The authors’ latest research findings, based on dimensional analyses, well-instrumented full-scale field tests, systematic coupled-consolidation finite element analyses and centrifuge tests are reported. This book shows how to systematically approach a complex geotechnical problem, from identifying existing problems, reviewing literature, to dimensional and numerical analyses, validation through full-scale testing and centrifuge model testing. The methodologies are also introduced as major tools adopted in geotechnical research.

  10. Heating, cooling, and uplift during Tertiary time, northern Sangre de Cristo Range, Colorado ( USA).

    Science.gov (United States)

    Lindsay, D.A.; Andriessen, P.A.M.; Wardlaw, B.R.

    1986-01-01

    Paleozoic sedimentary rocks in a wide area of the northern Sangre de Cristo Range show effects of heating during Tertiary time. Heating is tentatively interpreted as a response to burial during Laramide folding and thrusting and also to high heat flow during Rio Grande rifting. Fission-track ages of apatite across a section of the range show that rocks cooled abruptly below 120oC, the blocking temperature for apatite, approx 19 Ma ago. Cooling was probably in response to rapid uplift and erosion of the northern Sangre de Cristo Range during early Rio Grande rifting.-from Authors

  11. Surface uplift and atmospheric flow deflection in the Late Cenozoic southern Sierra Nevada

    Science.gov (United States)

    Mix, H.; Caves, J. K.; Winnick, M.; Ritch, A. J.; Reilly, S.; Chamberlain, C. P.

    2016-12-01

    Given the intimate links between topography, tectonics, climate and biodiversity, considerable effort has been devoted to developing robust elevation histories of orogens. In particular, quantitative geochemical reconstructions using stable oxygen and hydrogen isotopes have been applied to many of the world's mountain belts. Yet after decades of study, determining the Cenozoic surface uplift history of the Sierra Nevada remains a challenge. While geological and geophysical evidence suggests the southern Sierra underwent 1-2 km of Late Cenozoic surface uplift, stable isotope paleoaltimetry studies to date have been restricted to the Basin and Range interior. Recent advances in atmospheric modeling have suggested that such stable isotope records from leeward sites can be affected by the complicating role that sufficiently elevated topography such as the southern (High) Sierra plays in diverting atmospheric circulation. In order to examine the potential role of these terrain blocking effects, we produced stable isotope records from three Late Cenozoic sedimentary basins in the Eastern Sierra and Basin and Range: 1) Authigenic clay minerals in the Mio-Pliocene Verdi Basin (VB), 2) Fluvial and lacustrine carbonates from the Plio-Pleistocene Coso Basin (CB), and 3) Miocene to Holocene pedogenic, fluvial and lacustrine carbonates of Fish Lake Valley (FLV). Whereas both the VB (near present-day Reno) and CB (southern Owens Valley) receive input of water directly from the Sierra crest, FLV is a region of proposed reconvergence of moisture in the Basin and Range. The oxygen isotope records in both CB and FLV increase during the Neogene by approximately 2 ‰, while the hydrogen isotope record of the VB decreases by <10 ‰. These results are consistent with a modestly-elevated Paleogene Sierra of 2 km over which air masses traversed and underwent orographic rainout and Rayleigh distillation. A Neogene pulse of uplift in the southern Sierra could have driven modern flow

  12. Tectonic Constraints on the Transformation of Paleozoic Framework of Uplift and Depression in the Ordos Area

    Institute of Scientific and Technical Information of China (English)

    WANG Qingfei; DENG Jun; HUANG Dinghua; YANG Liqiang; GAO Bangfei; XU Hao; JIANG Shaoqing

    2006-01-01

    During the Paleozoic, the Ordos area in the western North China Plate was located at the intersecting position of microplates and controlled by their interaction. The structural framework in the Ordos area, which underwent transformations in the Ordovician, the Carboniferous and the Permian respectively, was dominated by the alternation of uplift and depression. The transformations of structural framework are utilized as the clues to investigate the microplates' interacting type and its response in the Ordos area. According to the regional structural evolution, the Ordos area is simplified into an isopachous, isotropic and elastic shell model, and under proposed various boundary conditions,three series of numerical simulations corresponding to the three structural transformations are carried out to determine the detailed tectonic constraints. Numerical simulations reveal that the structure of the uplift and depression, which is similar to the actual pattern, develops only under one special boundary condition in each of the three series, indicating that the structural framework responds to the unique tectonic background. The simulation results show that in the Early Paleozoic, the L-shaped paleouplift formed nearby the southwestern corner of the Ordos area because the intensity of the compressions in the southern and western boundaries resulting from the ocean-continent collisions was similar. In the Late Paleozoic, it evolved into continent-continent (or arc-continent) interaction in the southern and northern boundaries; in the preliminary stage of the interaction, since the interface between the North China Plate and the plates on the south and north was narrow, the relative acting force was little and the regional western boundary immobile, and the structural framework in the basin was characterized by the N-S trending slender-waist-shaped uplift; as the interface between the plates expanded gradually, the extrusive force in the southern and northern boundaries

  13. 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

  14. SEXTO EMPÍRICO. Contra os Retóricos. Introdução, Tradução e notas de Rodrigo Brito e Rafael Huguenin. Marília: Unesp, 2013.

    Directory of Open Access Journals (Sweden)

    Aldo Dinucci

    2013-08-01

    Full Text Available Acaba de ser publicada pela UNESP a tradução bilíngue e anotada de Contra os Retóricos, de Sexto Empírico. A publicação é o primeiro passo rumo à tradução de toda a obra de Sexto Empírico em língua portuguesa, ousado projeto da dupla de jovens filósofos e tradutores Rodrigo Brito (doutor em filosofia pela PUC-RJ e Rafael Huguenin (doutoranto em filosofia pela PUC-RJ.

  15. Gestión gerencial en la selección y contratación de talento humano del Hospital Rafael Ruiz, cantón Pujilí provincia de Cotopaxi 2015

    OpenAIRE

    Duque Torres, Gabriela Paulina

    2016-01-01

    El presente trabajo de investigación está encaminado a mejorar la calidad y calidez del personal del Hospital Rafael Ruiz del Cantón Pujilí, hacia el usuario externo; mediante proceso y subproceso previamente diseñados y que posteriormente se pondrán en práctica para la mejora continua y la gestión de talento humano. A nivel Internacional las viejas definiciones que usaban el término Recurso Humano se basan en la concepción de un hombre como un "sustituible" engranaje más de la maquinaria ...

  16. Tematización de la pena de muerte en El verdugo : (dirección de Luis García Berlanga, guión de Rafael Azcona)

    OpenAIRE

    Quiroga, Ariadna

    2011-01-01

    En la presente ponencia se analizará la tematización de la pena de muerte y el motivo del garrote vil en el guión de Rafael Azcona de la película "El verdugo" (dir. Luis García Berlanga, 1963). Teniendo en cuenta el año del rodaje, se prestará especial atención a los distintos recursos de distanciamiento empleados ante un tema dramático y horroroso como lo es la pena capital. Se observarán las distintas representaciones del humor como modo de quiebre del dramatismo. “El verdugo” como re...

  17. Estudio descriptivo de las anomalías congénitas del tracto urinario intervenidas en el Hospital Infantil Universitario Rafael Henao Toro de Manizales-Caldas entre los años 2008-2015

    OpenAIRE

    Bocanegra Serrano, Luis Felipe; Castaño Castrillón, José Jaime; Duque Quintero, Antonio; Escalante Lopez, Manuel Alejandro; Garcia Clavijo, Luisa Fernanda; Leyton Rios, Fernanda Estefania; Pelaez Giraldo, Natalia

    2016-01-01

    Objetivo: analizar las historias clínicas de los pacientes intervenidos por reflujo vesicoureteral en el Hospital Infantil Universitario Rafael Henao Toro de Manizales-Caldas durante los años 2008-2015. Materiales y métodos: estudio descriptivo en el cual se revisaron 52 historias clínicas. Resultados: el género masculino tiene una proporción de 52,9%, en un 68,6% la procedencia es de Manizales, 53,2% de estrato social 3, la edad promedio es de 3,16±2,82 años. En cuanto a las variables pondoe...

  18. Estudio descriptivo de los pacientes con reflujo vesicoureteral intervenidos quirúrgicamente en el Hospital Infantil Universitario Rafael Henao Toro de Manizales (Caldas, Colombia) entre los años 2008-2015

    OpenAIRE

    Bocanegra Serrano, Luis Felipe; Castaño Castrillón, José Jaime; Duque Quintero, Antonio; Escalante López, Manuel Alejandro; García Clavijo, Luisa Fernanda; Leytón Rios, Fernan-da Estefanía; Peláez Giraldo, Natalia

    2016-01-01

    Artículo (Investigación Médica). Universidad de Manizales. Facultad de Ciencias de la Salud-Programa de Medicina, 2015 Objetivo: Analizar las historias clínicas de los pacientes intervenidos quirúrgicamente por reflujo vesicoureteral en el Hospital Infantil Universitario Rafael Henao Toro de Manizales-Caldas (Colombia) durante los años 2008-2015. Materiales y métodos: estudio descriptivo en el cual se revisaron 50 historias clínicas. Resultados: el género masculino tiene una pro-porción de...

  19. Resultados obstétricos y neonatales de pacientes secundigestas con antecedente de cesárea, Hospital Dr. Rafael Ángel Calderón Guardia, 2006-2007

    OpenAIRE

    Manrique Leal-Mateos; Loretta Giacomin-Carmiol; Rafael Ángel Moya-Sibaja

    2010-01-01

    Objetivo: Analizar los resultados obstétricos y neonatales de pacientes con antecedente de cesárea. Materiales y Métodos: Se realizó un estudio observacional de corte transversal. Se analizaron 306 historias clínicas de pacientes gestantes atendidas en el servicio de Obstetricia del Hospital Dr. Rafael Ángel Calderón Guardia (HCG) del 1 de enero de 2006 al 31 de diciembre de 2007. Las variables maternas relacionadas con el control prenatal fueron edad e indicación obstétrica que motivó la ces...

  20. 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…

  1. SSC San Diego Command History Calendar Year 2004

    Science.gov (United States)

    2005-03-01

    Unclassified But Sensitive) IP Router Network services to customers. Team members: Rafael Maldonado, Israel Arenas, Mytiec Lam, Hang Le, Maurice Murphy...Robert O’Leary, Mark Schwartz, Robin Chu, John Kottong, Sandy Wetzel-Smith, Bobby Ramirez , Eleanor Holmes, Jay Mclnvale, Carmela Keeney, Patricia Thomas...Granlee, Roger Ligon, J.C. Norris, Jim Pomerene, John Wadsworth, Abundio Alvarez , Robert Calland, Arthur Chagnon, Dr. Donald Christy, Dr. I.R

  2. Subsurface structure and kinematics of the Calaveras-Hayward fault stepover from three-dimensional Vp and seismicity, San Francisco Bay region, California

    Science.gov (United States)

    Manaker, David M.; Michael, Andrew J.; Burgmann, Roland

    2005-01-01

    The Calaveras and Hayward faults are major components of the San Andreas fault system in the San Francisco Bay region. Dextral slip is presumed to transfer from the Calaveras fault to the Hayward fault in the Mission Hills region, an area of uplift in the contractional stepover between the two faults. Here the estimated deep slip rates drop from 15 to 6 mm/yr on the Calaveras fault, and slip begins on the Hayward fault at an estimated 9 mm/yr. A lineament of microseismicity near the Mission fault links the seismicity on the Calaveras and Hayward faults and is presumed to be related directly to this slip transfer. However, geologic and seismologic evidence suggest that the Mission fault may not be the source of the seismicity and that the Mission fault is not playing a major role in the slip transfer.

  3. Evidence for latest Pleistocene to Holocene uplift at the southern margin of the Central Anatolian Plateau (CAP), southern Turkey

    Science.gov (United States)

    Cosentino, Domenico; Öǧretmen, Nazik; Cipollari, Paola; Gliozzi, Elsa; Radeff, Giuditta; Yıldırım, Cengiz; Baykara, Oruc M.; Shen, Chuan-Chou

    2016-04-01

    Along the Mediterranean coastal area of southern Anatolia, markers of ancient sea-level have been reported west of Alanya and east of the Göksu delta. In both areas, bioconstructed fossil rims, consisting mainly of calcareous algae, are situated 0.5 m above the live counterpart. The fossil rim to the west of Alanya has been dated between 2690 to 1545 yrs BP, evidencing late Holocene rock uplift at the CAP southern margin. More recently, based on beachrocks along the coastal area from Incekum to the south of Adana, authors showed that the shoreline was raised around 0.5 m after 19 BC-200 AD. Based on new field observations along the coast between Aydı ncı k and Ayaş (Mersin, southern Turkey), together with AMS 14C dating and high-resolution U-Th chronology, a more complex uplift history can be suggested. Along the coast of Yeşilovacı k, we observed up to seven uplifted marine notches, from 0.5 m to 6.10 m above sea level. Some of them show relationships with a travertine crust that yielded U-Th ages of 2727 ± 1559 years and 5236 ± 2255 years. In the same area, a calcareous algae fossil trottoir related to a marine notch 5.40 m above sea level yielded an AMS 14C 2σ age of 32700 to 31645 years cal BP. Considering that the global ocean was 60 m below the present sea level at 32 ka, the Yeşilovacı k coastal area has been uplifted at 2 mm/yr. Moving to the east, in a small embayment at Eǧribük, two distinct well cemented beach deposits containing Murex brandaris, Cerithium vulgatum, and Columbella rustica have been uplifted at 0.3 m and 0.7 m above the present sea level. Although it is difficult to reconstruct the paleodepth of those beach deposits, AMS 14C 2σ ages of 5575 to 5445 years cal BP and 2130 to 1965 years cal BP show late Holocene uplift. In the Narlı kuyu area, up to seven different uplifted markers of sea level were observed between 0.8 and 7.2 m above the present sea level. In addition, near Ayaş new insights for late Holocene uplift are

  4. Señorío y repoblación a fines del siglo XVIII. Dificultades tras la fundación del Lugar Nuevo de San Rafael (1773)

    OpenAIRE

    Primitivo J. PLA ALBEROLA

    2012-01-01

    Actas de la XII Reunión Científica de la Fundación Española de Historia Moderna, celebrada en la Universidad de León en 19-21 de junio de 2012. Primitivo J. Pla Alberola, Universidad de Alicante ()

  5. Necesidades de formación de los docentes de bachillerato de la Unidad Educativa Madre de la Divina Gracia, de la provincia de Pichincha, Cantón Rumiñahui, ciudad de San Rafael, periodo 2012 2013

    OpenAIRE

    2014-01-01

    El sistema educativo ecuatoriano busca mejorar la calidad educativa mediante la creación de nuevas políticas educativas que permitan superar la débil formación profesional docente; y como una forma de contribuir a la solución del problema se ha planteado el siguiente tema de investigación Diagnostico de las necesidades de formación de los docentes de bachillerato . El objetivo general es analizar las necesidades de formación de los docentes de bachillerato de la Unidad Educativa Madre de...

  6. Geomorphometric mapping of spatio-temporal changes in Plio-Quaternary uplift in the NW European Alpine foreland

    Science.gov (United States)

    Demoulin, Alain; Bourdon, Hadrien

    2016-04-01

    A way to explore the causes of Plio-Quaternary uplift in NW Europe consists in identifying the distribution of uplifted areas and evaluating relative uplift ages. Here we use the composite metric R of fluvial landscapes, which involves three different hypsometric integrals (catchment, drainage network, and trunk stream), in order to get time information (Demoulin, 2011). Main controls on R are catchment size A and uplift age. To isolate the latter information, we use the derived SR index, which is the slope of the linear fit between R and ln(A). We calculate R for more than 7000 basins larger than 15 km2 and determine SR values for 60-km-wide regions in five N- to NW-trending zones of alternating Paleozoic massifs (Massif central-Brittany; Rhenish shield; Bohemian massif) and Meso-Cenozoic basins (Paris basin; Franconian basin) covering the whole NW European platform in front of the alpine arc. The resulting 350- to 750-km-long SR profiles seem to provide the most meaningful time information, better than that obtained with noisier higher-resolution SR maps. Preliminary results of the study especially evidence a systematic increase in SR from south to north across the Paris basin and Rhenish shield zones that suggests northward propagation of an uplift wave that started from ~200 km north of the alpine collision front in Pliocene times and travelled across this part of the European platform. The Bohemian Massif and the Massif central-Brittany zone show more complex SR patterns that might be linked to interferences between the uplift wave and more local phenomena (related, e.g., to WNW-oriented compression in front of the Carpathian arc). Surprisingly, the Franconian basin displays fairly uniform low to moderate SR values suggesting that no tectonic perturbation occurred there since at least the late Early Pleistocene. In conclusion, this new geomorphometric approach of uplift chronology provides a wealth of data, whose careful analysis will help get fresh insight

  7. Land uplift and relative sea-level changes in the Loviisa area, southeastern Finland, during the last 8000 years

    Energy Technology Data Exchange (ETDEWEB)

    Miettinen, A.; Eronen, M.; Hyvaerinen, H. [Helsinki Univ. (Finland). Dept. of Geology

    1999-09-01

    Southeastern Finland belongs to the area covered by the Weichselian ice sheet, where the release of the ice load caused a rapid isostatic rebound during the postglacial time. While the mean overall apparent uplift is of the order of 2 mm/yr today, in the early Holocene time it was several times higher. A marked decrease in the rebound rate occurred around 8500 BP, however, since then the uplift rate has remained high until today, with a slightly decreasing trend towards the present time. According to current understanding there have neither been temporary increases nor decreases in the rate of uplift during the postglacial time. Even so, it is not known for sure whether there are regional irregularities on the rebound in Finland. Concurrently with land uplift, relative sea-level changes in the Baltic basin were also strongly affected by the global eustatic rise of sea-level. During the early Litorina Sea stage on the southern coast of Finland around 7000 BP, the rise in sea-level exceeded the rate of land uplift, and resulted in a short-lived transgression. The most accurate information on relative sea-level changes in an uplifting area may be obtained from radiocarbon dated events of isolation in small lake basins, as they were cut off from larger bodies of water. The isolations of such basins from the sea may be reliably determined by the recorded changes in the diatom flora in the sediment sequences, at horizons which may be radiometrically dated. In the present study, the isolation-horizons of 13 basins were dated by 26 conventional and 2 AMS radiocarbon dates. According to the available sets of dates, the time span of emergence extends from 8300 BP to the past few hundred years, for lakes from c. 30 m to 1.1 m above the present sea-level. Due to the global rise in sea-level, during the period of 7500-6500 BP, the sea-level rise clearly exceeded the rate of uplift, and resulted in the Litorina transgression, which had an amplitude of around one metre. The

  8. High Resolution Topography and Multiple Seismic Uplift on the Main Frontal Thrust near the Ratu River, Eastern Nepal

    Science.gov (United States)

    Karakas, C.; Tapponnier, P.; Sapkota, S. N.; Coudurier Curveur, A.; Ildefonso, S.; Gao, M.; Bollinger, L.; Klinger, Y.; Tiwari, D. R.

    2015-12-01

    New data at several more sites along the Main Frontal Thrust between 85°49' to 86°27' E corroborates the surface emergence of the great M ≈ 8.4, 1934 Bihar-Nepal and 1255 AD earthquakes. Here we show unambiguous evidences of surface rupture and co-seismic uplift in the Ratu river area based on high-resolution geomorphic surveys. We present a refined map of uplifted terrace surfaces and abandoned paleo-channels truncated by the MFT, obtained by newly acquired high resolution Digital Elevation Models from Total station, Terrestrial Lidar Scanner (TLS), Unmanned Aerial Vehicle (UAV) and kinematic GPS surveys. In the Ratu valley, using these new high resolution topographic datasets, we identify five and possibly seven distinct terrace levels uplifted parallel to the riverbed, that cap the folded Siwaliks. Such measurements may be taken to imply broadly characteristic increments of throw during sequences of at least five to seven events of riverbed abandonment related to co-seismic uplifts. Newly collected detrital charcoals from several pits and from a rejuvenated paleoseismological wall will help assess more precisely uplift and shortening rates over the length of segments of the MFT east and west of Bardibas. A regional comparison of comparable long term paleoseismological data at other sites along the 1934 rupture length is in progress.

  9. Seismicity and neotectonic uplift in the Augrabies Falls National Park, Namaqualand, Northern Cape, South Africa

    Science.gov (United States)

    Madi, Kakaba

    2016-10-01

    Gneissic rocks in the Augrabies Falls National Park are part of the Proterozoic Namaqua-Natal mobile belt. Finding neotectonic evidence in old terranes is always not an easy task. In South Africa, the mid-Miocene is believed to be the beginning of neotectonics. This study investigated the occurrence and recurrence of earthquake activity, occurrence of faulting, jointing, uplift, and potholes in the gneisses cropping out around the Augrabies Falls area that may account for neotectonics. A historic seismic event obtained from the United States Geological Survey (USGS), and seismic epicenters downloaded in October 2015 from IRIS earthquake browser and overlaid on a satellite image with digitised faults and lineaments, indicates that the area is seismically active and is a zone of seismic risk. Potholes occurring today on a dry surface at approximately 613 m above sea level are a direct consequence of the Griqualand-Transvaal neotectonic uplift, which generated a major fault along which water flows continuously. It is concluded that the Augrabies Falls National Park area is a zone of neotectonics. This zone should not be considered for the storage of nuclear wastes.

  10. Meso-Cenozoic uplifting and exhumation on Yunkaidashan: Evidence from fission track thermochronology

    Institute of Scientific and Technical Information of China (English)

    LI Xiaoming; WANG Yuejun; TAN Kaixuan; PENG Touping

    2005-01-01

    Yunkaidashan, located at the southern South China block (SCB) and closely adjacent to the Indochina block, is an ideal region for better understanding the temporal and spatial framework of tectonothermal overprinting at the southern SCB since Mesozoic. Apatite and zircon fission track thermochronology of various-type rocks from Yunkaidashan is presented in this paper. The results show, no matter what rocks are, the apparent ages of zircon fission track range from 97.4 to 133.0 Ma, and those of apatite fission track from 43.2 to 68.4 Ma. The length of apatite fission track yields an average confined track length of ~13 μm and shows normal distribution of unimodal frequency. It is inferred that the uplifting amplitude has been more than 5 km in Yunkaidashan since late Mesozoic. The difference of fission track apparent ages at different locations in Yunkaidashan suggests a paleophysiognomic scenario of the heterogeneous uplift/denudation. These data of the fission track thermochronology provide new constraints for better understanding the tectonophysiognomic pattern of the SCB since late Mesozoic.

  11. Feedback under the microscope II: heating, gas uplift, and mixing in the nearest cluster core

    CERN Document Server

    Werner, N; Million, E T; Allen, S W; Nulsen, P E J; von der Linden, A; Hansen, S M; Boehringer, H; Churazov, E; Fabian, A C; Forman, W R; Jones, C; Sanders, J S; Taylor, G B

    2010-01-01

    Using a combination of deep 574ks Chandra data, XMM-Newton high-resolution spectra, and optical Halpha+NII images, we study the nature and spatial distribution of the multiphase plasma in M87. Our results provide direct observational evidence of `radio mode' AGN feedback in action, stripping the central galaxy of its lowest entropy gas and preventing star-formation. This low entropy gas was entrained with and uplifted by the buoyantly rising relativistic plasma, forming long "arms". These arms are likely oriented within 15-30 degrees of our line-of-sight. The mass of the uplifted gas in the arms is comparable to the gas mass in the approximately spherically symmetric 3.8 kpc core, demonstrating that the AGN has a profound effect on its immediate surroundings. The coolest X-ray emitting gas in M87 has a temperature of ~0.5 keV and is spatially coincident with Halpha+NII nebulae, forming a multiphase medium where the cooler gas phases are arranged in magnetized filaments. We place strong upper limits of 0.06 Ms...

  12. Seismicity and neotectonic uplift in the Augrabies Falls National Park, Namaqualand, Northern Cape, South Africa

    Directory of Open Access Journals (Sweden)

    Kakaba Madi

    2016-10-01

    Full Text Available Abstract Gneissic rocks in the Augrabies Falls National Park are part of the Proterozoic Namaqua-Natal mobile belt. Finding neotectonic evidence in old terranes is always not an easy task. In South Africa, the mid-Miocene is believed to be the beginning of neotectonics. This study investigated the occurrence and recurrence of earthquake activity, occurrence of faulting, jointing, uplift, and potholes in the gneisses cropping out around the Augrabies Falls area that may account for neotectonics. A historic seismic event obtained from the United States Geological Survey (USGS, and seismic epicenters downloaded in October 2015 from IRIS earthquake browser and overlaid on a satellite image with digitised faults and lineaments, indicates that the area is seismically active and is a zone of seismic risk. Potholes occurring today on a dry surface at approximately 613 m above sea level are a direct consequence of the Griqualand-Transvaal neotectonic uplift, which generated a major fault along which water flows continuously. It is concluded that the Augrabies Falls National Park area is a zone of neotectonics. This zone should not be considered for the storage of nuclear wastes.

  13. Numerical simulation of installation process and uplift resistance for an integrated suction foundation in deep ocean

    Science.gov (United States)

    Li, Ying; Yang, Shu-geng; Yu, Shu-ming

    2016-03-01

    A concept design, named integrated suction foundation, is proposed for a tension leg platform (TLP) in deep ocean. The most important improvement in comparing with the traditional one is that a pressure-resistant storage module is designed. It utilizes the high hydrostatic pressure in deep ocean to drive water into the module to generate negative pressure for bucket suction. This work aims to further approve the feasibility of the concept design in the aspect of penetration installation and the uplift force in-place. Seepage is generated during suction penetration, and can have both positive and negative effects on penetration process. To study the effect of seepage on the penetration process of the integrated suction foundation, finite element analysis (FEA) is carried out in this work. In particular, an improved methodology to calculate the penetration resistance is proposed for the integrated suction foundation with respect to the reduction factor of penetration resistance. The maximum allowable negative pressure during suction penetration is calculated with the critical hydraulic gradient method through FEA. The simulation results of the penetration process show that the integrated suction foundation can be installed safely. Moreover, the uplift resistance of the integrated suction foundation is calculated and the feasibility of the integrated suction foundation working on-site is verified. In all, the analysis in this work further approves the feasibility of the integrated suction foundation for TLPs in deep ocean applications.

  14. Numerical Simulation of Installation Process and Uplift Resistance for An Integrated Suction Foundation in Deep Ocean

    Institute of Scientific and Technical Information of China (English)

    李英; 杨树耕; 于书铭

    2016-01-01

    A concept design, named integrated suction foundation, is proposed for a tension leg platform (TLP) in deep ocean. The most important improvement in comparing with the traditional one is that a pressure-resistant storage module is designed. It utilizes the high hydrostatic pressure in deep ocean to drive water into the module to generate negative pressure for bucket suction. This work aims to further approve the feasibility of the concept design in the aspect of penetration installation and the uplift force in-place. Seepage is generated during suction penetration, and can have both positive and negative effects on penetration process. To study the effect of seepage on the penetration process of the integrated suction foundation, finite element analysis (FEA) is carried out in this work. In particular, an improved methodology to calculate the penetration resistance is proposed for the integrated suction foundation with respect to the reduction factor of penetration resistance. The maximum allowable negative pressure during suction penetration is calculated with the critical hydraulic gradient method through FEA. The simulation results of the penetration process show that the integrated suction foundation can be installed safely. Moreover, the uplift resistance of the integrated suction foundation is calculated and the feasibility of the integrated suction foundation working on-site is verified. In all, the analysis in this work further approves the feasibility of the integrated suction foundation for TLPs in deep ocean applications.

  15. Uplift along the western margin of the Deccan Basalt Province: Is there any geomorphometric evidence?

    Indian Academy of Sciences (India)

    Vishwas S Kale; Nikhil Shejwalkar

    2008-12-01

    In line with the passive margin landscape evolutionary model in vogue, sustained erosion and long-distance retreat of the Western Ghat escarpment are widely considered to be the results of erosionally-driven isostatic uplift since Tertiary by many workers. Others have postulated or adduced evidence for strong neotectonic activity in the Ghat region. An obvious question in this regard is whether there is any geomorphometric evidence in support of this widespread view? In order to test the hypothesis of ongoing post-rift fexural uplift or neotectonic activity in the western Deccan Basalt Province (DBP), geomorphometric analysis was carried out and commonly used geomorphic indices of active tectonics (GAT)were derived for 30 selected river basins on both sides of the Western Ghat. SRTM-DEM data and ArcGIS were used to derive the indices. Tectonic geomorphic analysis based on five proxy indicators suggests that the differences in GAT indices, both along strike and across the Western Ghat,are statistically insignificant. The index values are nowhere close to the GAT values typically associated with drainage basins affected by active tectonics and deformation.Mapping of the indices reveals lack of discernable trends. The adduced results indicate that the western DBP belongs to the class of relatively low tectonic activity.

  16. Evidence for Late Pleistocene uplift at the Somma-Vesuvius apron near Pompeii

    Science.gov (United States)

    Marturano, Aldo; Aiello, Giuseppe; Barra, Diana

    2011-05-01

    Detailed stratigraphic and micropalaeontological analyses of samples from boreholes at the Somma-Vesuvius apron, between Pompeii and the sea, allowed reconstruction of Late Quaternary palaeoenvironmental evolution of the Sarno coastal plain. In all, 116 samples were recovered from seven boreholes drilled from 2-10 m a.s.l. to 16.5-26 m b.s.l. Microfossil assemblages, with special regard to benthic foraminifers and ostracods, were used to reconstruct the depositional palaeoenvironment. Fossil remains show that all the pre-79 AD fossiliferous sediments from 2 to - 24 m a.s.l. were deposited in shallow marine waters for a long time despite an appreciable sea level rise. The data indicate alternation of both shallow marine and subaerial conditions during the last ~ 15 kyr, evidencing ground uplift of the area of about 75 m at a rate of ~ 5 mm/year. Marine sediment accumulation (~ 6 m/kyr) and tectonic uplift long offset the sea level rise, and as a consequence, submerged areas remained the same as well.

  17. Erosional response of an actively uplifting mountain belt to cyclic rainfall variations

    Science.gov (United States)

    Braun, J.; Voisin, C.; Gourlan, A. T.; Chauvel, C.

    2015-01-01

    We present an approximate analytical solution to the stream power equation describing the erosion of bedrock in an actively uplifting mountain range subject to periodic variations in precipitation rate. It predicts a time lag between the climate forcing and the erosional response of the system that increases with the forcing period. The predicted variations in the sedimentary flux coming out of the mountain are also scaled with respect to the imposed rainfall variations in a direct proportion to the discharge exponent, m, in the stream power law expression. These findings are confirmed by 1-D and 2-D numerical solutions. We also show that the response of a river channel is independent of its length and thus the size of its catchment area, implying that all actively eroding streams in a mountain belt will constructively contribute to the integrated signal in the sedimentary record. We show that rainfall variability at Milankovitch periods should affect the erosional response of fast uplifting mountain belts such as the Himalayas, Taiwan or the South Island, New Zealand, and predict 1000 to 10 000-year offsets between forcing and response. We suggest that this theoretical prediction could be used to independently constrain the value of the poorly defined stream power law exponents, and provide an example of how this could be done, using geochemical proxy signals from an ODP borehole in the Bengal Fan.

  18. Glacial uplift: fluid injection beneath an elastic sheet on a poroelastic substrate

    Science.gov (United States)

    Neufeld, Jerome; Hewitt, Duncan; Chini, Greg

    2016-11-01

    Supraglacial lakes can drain to the base of glaciers extremely rapidly, causing localised uplift of the surrounding glacier and affecting its sliding velocity. The means by which large volumes of drained water interact with and leak into the subglacial hydrological system is unclear, as is the role of the basal till. A theoretical study of the spread of fluid injected below an elastic sheet (the ice) is presented, where the ice lies above, and initially compresses, a deformable poroelastic layer. As pressurized fluid is injected, the deformable layer swells to accommodate more fluid. If sufficient fluid is injected, a 'blister' of fluid forms above the layer, causing the overburden to lift off the base. The flow is controlled by the local pressure drop across the tip of this blister, which depends subtly on both the flow of fluid through the porous layer below the tip, and on poroelastic deformation in the till ahead of the tip. The spreading behaviour and dependence on key parameters is analysed. Predictions of the model are compared to field measurements of uplift from draining glacial lakes in Greenland.

  19. Uplifting of palsa peatlands by permafrost identified by stable isotope depth profiles

    Science.gov (United States)

    Krüger, Jan Paul; Conen, Franz; Leifeld, Jens; Alewell, Christine

    2015-04-01

    Natural abundances of stable isotopes are a widespread tool to investigate biogeochemical processes in soils. Palsas are peatlands with an ice core and are common in the discontinuous permafrost region. Elevated parts of palsa peatlands, called hummocks, were uplifted by permafrost out of the influence of groundwater. Here we used the combination of δ15N values and C/N ratio along depth profiles to identify perturbation of these soils. In the years 2009 and 2012 we took in total 14 peat cores from hummocks in two palsa peatlands near Abisko, northern Sweden. Peat samples were analysed in 2 to 4 cm layers for stable isotope ratios and concentrations of C and N. The uplifting of the hummocks by permafrost could be detected by stable isotope depth patterns with the highest δ15N value at permafrost onset, a so-called turning point. Regression analyses indicated in 11 of 14 peat cores increasing δ15N values above and decreasing values below the turning point. This is in accordance with the depth patterns of δ13C values and C/N ratios in these palsa peatlands. Onset of permafrost aggradation identified by the highest δ15N value in the profile and calculated from peat accumulation rates show ages ranging from 80 to 545 years and indicate a mean (±SD) peat age at the turning points of 242 (±66) years for Stordalen and 365 (±53) years for Storflaket peatland. The mean peat ages at turning points are within the period of the Little Ice Age. Furthermore, we tested if the disturbance, in this case the uplifting of the peat material, can be displayed in the relation of δ15N and C/N ratio following the concept of Conen et al. (2013). In unperturbed sites soil δ15N values cover a relatively narrow range at any particular C/N ratio. Changes in N cycling, i.e. N loss or gain, results in the loss or gain of 15N depleted forms. This leads to larger or smaller δ15N values than usual at the observed C/N ratio. All, except one, turning point show a perturbation in the depth

  20. History of Asian eolian input to the Sea of Japan since 15 Ma: Links to Tibetan uplift or global cooling?

    Science.gov (United States)

    Shen, Xingyan; Wan, Shiming; France-Lanord, Christian; Clift, Peter D.; Tada, Ryuji; Révillon, Sidonie; Shi, Xuefa; Zhao, Debo; Liu, Yanguang; Yin, Xuebo; Song, Zehua; Li, Anchun

    2017-09-01

    We present high-resolution analyses of clay mineral assemblages combined with analysis of Sr-Nd-Pb isotopic compositions of the history of its source region. Our study presents for the first time a continuous, high-resolution record that highlights the four-step drying of Central Asia that occurred at ∼11.8 Ma, 8 Ma, 3.5 Ma and 1.2 Ma. Considered the nature and timing of major climatic and tectonic events in Asia, we conclude that the strengthened aridification of Central Asia starting at ∼11.8 Ma was possibly driven by the combined effect of Tibetan surface uplift and global cooling, whereas the rapid drying at ∼8 Ma was caused primarily by the uplift of the northern Tibetan Plateau. In contrast, global cooling, overwhelming the influence of Tibetan Plateau uplift, has become the primary control on Central Asia aridification since ∼3.5 Ma.

  1. Evidence for Tibetan Plateau Uplift in Qaidam Basin before Eocene-Oligocene Boundary and Its Climatic Implications

    Institute of Scientific and Technical Information of China (English)

    Pei Junling; Sun Zhiming; Wang Xisheng; Zhao Yue; Ge Xiaohong; Guo Xinzhuan; Li Haibing; Si Jialiang

    2009-01-01

    Geometry analysis of the Hongsanhan (红三旱) Section in the northwestern Qaidam basin illustrates the typical growth strata in the Xiaganchaigou (下干柴沟) Formation. The age and sedimentation rates of the Xiaganchaigou and the Shangganchaigou (上干柴沟) formations were determined by the high-resolution magnetostratigraphy. This result shows that the growth strata began to form at ca. 38.0 Ma and increased sedimentation rates occurred at ca. 37.0 Ma. The uplift of the Tibetan plateau before the Eocene-Oligocene boundary is confirmed, which enables us to better understand the relationship between climatic changes and the tectonic uplift. This uplift event could have resuited in the regional drying by blocking the moisture and contributed to the Eocene-Oligocene boundary global cooling event due to the declining atmospheric CO2 concentrations by increased weathering of the mountains.

  2. New evidence from stable isotope for the uplift of mountains in northern edge of the Qinghai-Tibetan Plateau

    Institute of Scientific and Technical Information of China (English)

    陈正乐; 王小凤; 冯夏红; 王长秋; 刘健

    2002-01-01

    New data of oxygen and carbonate isotope in calcite cements from Cenozoic rocks in the Jianggelesayi area to reconstruct the uplift history of mountains in northern edge of the Qinghai-Tibetan Plateau are presented. Analyses results show that rapid changes of Δ18o and Δ13c in the calcite cement occurred in both the Early Oligocene and Early Miocene. Studies on sedimentary features indicate that a rapid up-coarsing of the sediments size occurred in the Early Miocene, and sedimentary velocity increased rapidly during the Pliocene and Early Quaternary. Thus, it is suggested that the uplift of mountains in the northern edge of the Qinghai-Tibetan Plateau initiated from the Early Oligocene, and a rapid uplift occurred in the early stage of the Miocene, while the sharp difference in topography between the northern plateau and the Tarim Basin predominately formed later than the Miocene.

  3. Constraining Holocene Uplift Rates For The Serrania Del Baudo, Northwestern Colombia, Using Luminescence Dating On A Raised Beach

    Science.gov (United States)

    Gonzalez, J.; Shen, Z.; Mauz, B.

    2013-12-01

    A beach deposit on the southern tip of the Serrania del Baudo, perched 4.5 m above spring high tide, was dated at ~3,000 years using optically stimulated luminescence (OSL) dating. The average uplift rate necessary to raise this deposit is ~1.5 mm/yr. This rate combines the long-term regional deformation associated with the subduction of the Nazca Plate under the South American Plate and the collision of the Choco Block microplate against the South American continent, as well as uplift from local faults. We propose that rapid emergence probably as several pulses, each involving decimeter scale coseismic uplift, is likely to have occurred to elevate the beach above the intertidal zone and offset destructive wave erosion in this sand-limited coast.

  4. Geomorphic evidence of active tectonics in the San Gorgonio Pass region of the San Andreas Fault system: an example of discovery-based research in undergraduate teaching

    Science.gov (United States)

    Reinen, L. A.; Yule, J. D.

    2014-12-01

    Student-conducted research in courses during the first two undergraduate years can increase learning and improve student self-confidence in scientific study, and is recommended for engaging and retaining students in STEM fields (PCAST, 2012). At Pomona College, incorporating student research throughout the geology curriculum tripled the number of students conducting research prior to their senior year that culminated in a professional conference presentation (Reinen et al., 2006). Here we present an example of discovery-based research in Neotectonics, a second-tier course predominantly enrolling first-and second-year students; describe the steps involved in the four week project; and discuss early outcomes of student confidence, engagement and retention. In the San Gorgonio Pass region (SGPR) in southern California, the San Andreas fault undergoes a transition from predominantly strike-slip to a complex system of faults with significant dip-slip, resulting in diffuse deformation and raising the question of whether a large earthquake on the San Andreas could propagate through the region (Yule, 2009). In spring 2014, seven students in the Neotectonics course conducted original research investigating quantifiable geomorphic evidence of tectonic activity in the SGPR. Students addressed questions of [1] unequal uplift in the San Bernardino Mountains, [2] fault activity indicated by stream knick points, [3] the role of fault style on mountain front sinuosity, and [4] characteristic earthquake slip determined via fault scarp degradation models. Students developed and revised individual projects, collaborated with each other on methods, and presented results in a public forum. A final class day was spent reviewing the projects and planning future research directions. Pre- and post-course surveys show increases in students' self-confidence in the design, implementation, and presentation of original scientific inquiries. 5 of 6 eligible students participated in research the

  5. Late Neogene-Recent uplift of the Cabo de Gata volcanic province, Almerı´a, SE Spain

    Science.gov (United States)

    Martín, José M.; Braga, Juan C.; Betzler, Christian

    2003-02-01

    Cabo de Gata is a Miocene volcanic province in the Betic Cordillera in southeastern Spain. The distribution of coastal deposits in the successive marine sedimentary units overlying the last volcanic episode (about 7.5 Ma old) has been used to reconstruct the post-volcanic palaeogeographic evolution of the region during the Late Neogene. The current elevation of well-dated shoreline marker rocks has been used to estimate uplift amount and rates. Since the late Tortonian, a N45°E-aligned (the strike of the Carboneras fault system) topographic relief was emergent in the Cabo de Gata region. The extension and height of this island increased throughout the late Neogene. Smaller, independent islands were emergent and finally became connected to the main island during the Messinian. The Carboneras and Agua Amarga Pliocene sub-basins were the last two marine basins prior to the final emergence of the region. Since the last volcanic eruption (ca. 7.5 Ma), maximum uplift of sedimentary rocks in Cabo de Gata has taken place on the western margin of the N45°E-aligned palaeorelief. The altitude of the shoreline marker rocks in the successive sedimentary units decreases eastwards to the present-day coast and northwards of the Rambla del Plomo. Uplift rates since deposition remain nearly constant for the successive Messinian rocks and decrease slightly for the lower Pliocene outcrops. Most of the uplift took place before the Pliocene while the main island enlarged. Uplift amounts and rates since deposition of the upper Neogene sedimentary units in the Cabo de Gata area are similar to the ones estimated for laterally equivalent units in the eastern Betic basins (approximately 50 m/Ma). Despite its volcanic nature and the occurrence of the Carboneras fault system, the Cabo de Gata probably became elevated as a consequence of regional uplift in connection with the rest of the Betic Cordillera.

  6. Architecture and morphology of coral reef sequences. Modeling and observations from uplifting islands of SE Sulawesi, Indonesia

    Science.gov (United States)

    Pastier, Anne-Morwenn; Husson, Laurent; Bezos, Antoine; Pedoja, Kevin; Elliot, Mary; Hafidz, Abdul; Imran, Muhammad; Lacroix, Pascal; Robert, Xavier

    2016-04-01

    During the Late Neogene, sea level oscillations have profoundly shaped the morphology of the coastlines of intertropical zones, wherein relative sea level simultaneously controlled reef expansion and erosion of earlier reef bodies. In uplifted domains like SE Sulawesi, the sequences of fossil reefs display a variety of fossil morphologies. Similarly, the morphologies of the modern reefs are highly variable, including cliff notches, narrow fringing reefs, wide flat terraces, and barriers reefs. In this region, where uplift rates vary rapidly laterally, the entire set of morphologies is displayed within short distances. We developed a numerical model that predicts the architecture of fossil reefs sequences and apply it to observations from SE Sulawesi, accounting -amongst other parameters- for reef growth, coastal erosion, and uplift rates. The observations that we use to calibrate our models are mostly the morphology of both the onshore (dGPS and high-resolution Pleiades DEM) and offshore (sonar) coast, as well as U-Th radiometrically dated coral samples. Our method allows unravelling the spatial and temporal evolution of large domains on map view. Our analysis indicates that the architecture and morphology of uplifting coastlines is almost systematically polyphased (as attested by samples of different ages within a unique terrace), which assigns a primordial role to erosion, comparable to reef growth. Our models also reproduce the variety of modern morphologies, which are chiefly dictated by the uplift rates of the pre-existing morphology of the substratum, itself responding to the joint effects of reef building and subsequent erosion. In turn, we find that fossil and modern morphologies can be returned to uplift rates rather precisely, as the parametric window of each specific morphology is often narrow.

  7. 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.

  8. Rapid Ice Unloading in the Southern Antarctic Peninsula and its Effect on Bedrock Uplift Rates

    Science.gov (United States)

    Zhao, C.; King, M. A.; Watson, C.; Barletta, V. R.; Bordoni, A.; Dell, M.; Whitehouse, P. L.

    2016-12-01

    The Wordie Ice Shelf, lying off the Antarctic Peninsula's (AP) west coast, has undergone a long-term disintegration since the 1960s with a substantial calving event occurring around 1989, followed by a steady retreat and its almost-complete disappearance. The dynamic response of the upstream glaciers to the ice shelf collapse, and the response of the solid Earth to the associated mass loss, are not fully understood. To quantify the mass loss from the system, we generated a digital elevation model (DEM) using airborne vertical and oblique imagery from 1966 and compared it to a DEM from 2008 SPOT data. This analysis reveals lowering over that time of approximately 60 m at the front of Fleming Glacier. Using IceBridge and ICESat-2/GLAS data during 2002-2014 we show a higher mean elevation change rate post-2008 than pre-2008. We use these load change data as a basis for simulation of viscoelastic solid Earth deformation. We subtract modelled elastic deformation rates, and a suite of modelled viscous rates, from GPS-derived three-dimensional bedrock velocities at sites to the south of Fleming Glacier. Assuming the pre-breakup bedrock uplift was positive due to post-Last Glacial Maximum (LGM) ice retreat, our viscoelastic-corrected GPS uplift rates suggest upper mantle viscosities are >2×1019 Pa s in this region, about an order of magnitude greater than previously found for the northern AP. The horizontal velocities at the site nearest to the Fleming Glacier, after elastic and plate tectonic corrections, point away from Marguerite Bay rather than the present glacier front, suggesting that the horizontal motion is dominated by signal from the earlier retreat of the glacier system following the LGM, compatible with a relatively strong mantle in this region. These findings are in accord with those of an earlier study of southern Palmer Land that inferred present-day uplift associated with late Holocene loading changes south of this region, and highlights the need for

  9. Recent uplift and hydrothermal activity at Tangkuban Parahu volcano, west Java, Indonesia

    Science.gov (United States)

    Dvorak, J.; Matahelumual, J.; Okamura, A.T.; Said, H.; Casadevall, T.J.; Mulyadi, D.

    1990-01-01

    Tangkuban Parahu is an active stratovolcano located 17 km north of the city of Bandung in the province west Java, Indonesia. All historical eruptive activity at this volcano has been confined to a complex of explosive summit craters. About a dozen eruptions-mostly phreatic events- and 15 other periods of unrest, indicated by earthquakes or increased thermal activity, have been noted since 1829. The last magmatic eruption occurred in 1910. In late 1983, several small phreatic explosions originated from one of the summit craters. More recently, increased hydrothermal and earthquake activity occurred from late 1985 through 1986. Tilt measurements, using a spirit-level technique, have been made every few months since February 1981 in the summit region and along the south and east flanks of the volcano. Measurements made in the summit region indicated uplift since the start of these measurements through at least 1986. From 1981 to 1983, the average tilt rate at the edges of the summit craters was 40-50 microradians per year. After the 1983 phreatic activity, the tilt rate decreased by about a factor of five. Trilateration surveys across the summit craters and on the east flank of the volcano were conducted in 1983 and 1986. Most line length changes measured during this three-year period did not exceed the expected uncertainty of the technique (4 ppm). The lack of measurable horizontal strain across the summit craters seems to contradict the several years of tilt measurements. Using a point source of dilation in an elastic half-space to model tilt measurements, the pressure center at Tangkuban Parahu is located about 1.5 km beneath the southern part of the summit craters. This is beneath the epicentral area of an earthquake swarm that occurred in late 1983. The average rate in the volume of uplift from 1981 to 1983 was 3 million m3 per year; from 1983 to 1986 it averaged about 0.4 million m3 per year. Possible causes for this uplift are increased pressure within a very

  10. Impact of Tibetan Plateau uplift on Asian climate and stable oxygen isotopes in precipitation

    Science.gov (United States)

    Botsyun, Svetlana; Sepulchre, Pierre; Risi, Camille; Donnadieu, Yannick

    2016-04-01

    Surface elevation provides crucial information for understanding both geodynamic mechanisms of Earth's interior and influence of mountains growth on climate. Stable oxygen isotopes paleoaltimetry is considered to be a very efficient technic for reconstruction of the elevation history of mountains belts, including Tibetan Plateau and the Himalayas. This method relies on the difference between δ18O of paleo-precipitation reconstructed using the natural archives, and modern measured values for the point of interest. However, stable-isotope paleoaltimetry is potentially hampered by the fact that the presumed constancy of altitude-δ18O relationships through time might not be valid and climate changes affects δ18O in precipitation. We use the isotope-equipped atmospheric general circulation model LMDZ-iso for modeling Asia climate variations and associated δ18O in precipitation linked with Himalayas and Tibetan Plateau uplift. Experiments with reduced height over the Tibetan Plateau and the Himalayas have been designed. For the purpose of understanding where and how simulated complex climatic changes linked with the growth of mountains affect δ18O in precipitation we develop a theoretical expression for the precipitation composition. Our results show that modifying Tibetan Plateau height alters large-scale atmospheric dynamics including monsoon circulation and subsidence and associated climate variables, namely temperature, precipitation, relative humidity and cloud cover. In turn, δ18O signal decomposition results show that the isotopic signature of rainfall is very sensitive to climate changes related with the growth of the Himalayas and Tibetan Plateau, notably changes in relative humidity and precipitation amount. Topography appears to be the main controlling factor for only 40{%} of the sites where previous paleoelevation studies have been performed. Change of moisture sources linked with Asian topography uplift is shown to be not sufficient to yield a strong

  11. Características del control prenatal y el parto de las mujeres inmigrantes atendidas en el Hospital "Dr. Rafael Ángel Calderón Guardia"

    Directory of Open Access Journals (Sweden)

    Manrique Leal-Mateos

    2008-06-01

    Full Text Available Justificación y objetivo: El presente estudio tiene como objetivo principal dar a conocer las características más sobresalientes del control prenatal y del parto de la población inmigrante que acude al Servicio de Obstetricia del Hospital Dr. Rafael A. Calderón Guardia, Costa Rica y comparar los resultados obtenidos con los observados en la población costarricense, con el fin de determinar si difieren entre sí. Materiales y métodos: Se realizó un estudio observacional analítico de corte transversal. Mediante un muestreo consecutivo se analizaron 360 historias clínicas de pacientes gestantes atendidas en HCG entre el 1 de agosto y 7 de septiembre de 2007. Se excluyó del análisis toda paciente que no perteneciera al área de atracción del HCG o que presentara de forma incompleta alguna de las variables de interés. La recolección de la información se realizó mediante una hoja precodificada diseñada con base la que se utiliza para el control prenatal en el sistema de salud nacional. Resultados: Aproximadamente una de cada 5 pacientes embarazadas que dan a luz en el HCG son inmigrantes. La mayor parte de ellas son de origen nicaragüense, relativamente jóvenes, multíparas y con controles prenatales adecuados. Además, presentan una morbilidad previa e inducida por el embarazo semejante a la encontrada en las gestantes nacionales. Si bien aproximadamente la mitad de las pacientes inmigrantes se captan de forma tardía y presentan una cantidad menor de consultas prenatales a la observada en las embarazadas costarricenses, este aspecto no parece influir en los resultados derivados de la atención de su parto ni en las características de los recién nacidos al momento de su nacimiento. Conclusión: Las características de la población inmigrante que da a luz en el Hospital no son diferentes a las encontradas en las mujeres costarricenses.

  12. Trombosis de senos durales: casuística del Hospital Dr. Rafael Angel Calderón Guardia, período 1996-1999

    Directory of Open Access Journals (Sweden)

    Kwok Ho Sánchez-Suen

    2001-10-01

    Full Text Available Justificación: La oclusión trombótica de las venas cerebrales o senos durales es una causa menos frecuente de enfermedad cerebrovascular que la trombosis arterial. Sin embargo; los estudios epidemiológicos indican que esta entidad no es tan inusual como o ser pensaba previamente. Hasta donde sabemos, no hay ningún estudio publicando al respecto en la literatura nacional, siendo precisamente el motivo del presente trabajo. Objetivos: Identificar las características demográficas, clínicas y diagnósticas de los pacientes que sufrieron una trombosis de senos venosos durales. Describir los métodos terapéuticos empleados y la evolución que tuvieron estos pacientes. Materiales y métodos: Se revisaron los expedientes clínicos de 11 casos diagnosticados de trombosis de senos durales en el Hospital Dr. Rafael Ángel Calderón Guardia, en el período comprendido entre enero de 1996 a enero de 1999. Se analizaron los posibles factores de riego, formas de presentación clínica, estudios de radio imagen y tratamiento empleado. Resultados: El promedio de edad fue de 32,6 años. Un 18,2% fueron varones, mientras que el 81,8% correspondió a mujeres. Las manifestaciones más frecuentes fueron: cefalea (100%, vómito (91%, déficit motor 882%, alteración del sensorio (73%, papiledema (54,5%, crisis convulsiva (54,5% y datos de irritación meníngea (36,4%: el signo del delta vacío se documentó en 27,3% de los estudios tomográficos. El seno sagital superior fue el más frecuentemente afectado (91%. Se anticoaguló con heparina intravenosa al 54, 5% de los casos. Conclusiones: Aunque somos conscientes de las limitaciones de nuestra serie, nuestra intención ha sido llamar la atención sobre una patología vascular cerebral, que aunque no es tan frecuente como su contraparte arterial, debe tenerse en consideración por sus potenciales efectos sobre la salud del paciente. El conocimiento adecuado de esta condición es importante, debido a que a

  13. [Epidemiological profile of traumatic brain injury at the Dr. Rafael A. Calderón Guardia Hospital, Neurosurgery Department, during the period from 2007 to 2012].

    Science.gov (United States)

    Petgrave-Pérez, Alexander; Padilla, Juan I; Díaz, José; Chacón, Rosarito; Chaves, Carlos; Torres, Héctor; Fernández, Jorge

    2016-01-01

    To determine the epidemiological profile of the patients who suffered traumatic brain injury (TBI) and were treated at the Dr. Rafael A. Calderón Guardia Hospital (HCG) Neurosurgery department, during the period from 2007 to 2012. An observational, descriptive, retrospective and cross section study was performed on all the patients with TBI and who were admitted to the emergency room of the HCG during the period 2007 to 2012. There were a total of 721 cases, of which 566 records were obtained of patients who had the variables established in this study, excluding those with incomplete or inconsistent information. The present study established the epidemiological profile of the TBI in the population seen during the period 2007 to 2012 at the HCG. It was determined that the male sex made up the majority of the cases were male, with mean age of 46 years. The mortality rate was 12.69% (n=69). Car accidents were the most frequent cause of TBI (n=259 persons) in the age group of 25 to 44 years, followed by falls (n=174). It was observed that the majority were farmers, followed by students, and then construction workers. No chronic illnesses were recorded in 71.6% of the medical charts. No alcohol or other drugs were reported in 74.9% of the cases, while there was evidence of the presence of alcohol recorded in 22.8%. The clinical and laboratory parameters that had statistical significance (Palcohol consumption. Also, the consequences of such are aggravated when the victims present with chronic diseases such as, systemic arterial hypertension and mellitus diabetes. As regards the post-traumatic indicators directly related to a poor outcome, it was determined that a GCS score equal to or less than 8, a mean blood pressure less than 60, the prolongation of the coagulation times, the presence of mydriasis, and skull fractures, have a direct association with the negative or fatal outcome for the victim. Copyright © 2015 Sociedad Española de Neurocirugía. Published by

  14. Acalasia, experiencia de 6 años. Hospital "Dr. Rafael Ángel Calderón Guardia" (2001-2007

    Directory of Open Access Journals (Sweden)

    Viviana Hernández-de Mezerville

    2009-04-01

    Full Text Available Objetivos: Caracterizar la población de pacientes vistos con esta entidad en el Hospital "Dr. Rafael Angel Calderón Guardia" durante los últimos 6 años y determinar su presentación clínica, método(s de diagnóstico utilizado (s, tratamiento brindado y evolución durante el primer año postratamiento. Materiales y métodos: Se analizaron los expedientes clínicos de hospitalización de los pacientes con acalasia atendidos desde enero de 2001 hasta enero de 2007; luego se revisaron las notas de evolución de la consulta externa de Gastroenterología durante el año posterior a la terapia brindada. Resultados: Durante el periodo se analizaron 30 pacientes en total. Hubo una discreta predominancia del género masculino y la edad promedio en el momento del diagnóstico fue de 50,37 años. El 100% de los pacientes presentó disfagia de larga data y los síntomas asociados más frecuentes fueron la pérdida de peso y el dolor torácico. Los métodos diagnósticos más utilizados fueron la manometría esofágica, la endoscopía y el esofagograma. El tratamiento que más se empleó fue la dilatación neumática seguida de la cirugía. El 50% de los pacientes reinició o persistió con disfagia durante el año siguiente a su tratamiento. La incidencia de complicaciones fue baja y no hubo perforación esofágica. Conclusiones: Las características generales y la presentación clínica de los pacientes coincidieron con lo descrito en la bibliografía. El tratamiento que más se brindó fue la dilatación neumática. La mitad de los pacientes presentaron o continuaron con síntomas postratamiento.

  15. Modeling Magnetic Fields from a DC Power Cable Buried Beneath San Francisco Bay Based on Empirical Measurements.

    Directory of Open Access Journals (Sweden)

    Robert Kavet

    Full Text Available The Trans Bay Cable (TBC is a ±200-kilovolt (kV, 400 MW 85-km long High Voltage Direct Current (DC buried transmission line linking Pittsburg, CA with San Francisco, CA (SF beneath the San Francisco Estuary. The TBC runs parallel to the migratory route of various marine species, including green sturgeon, Chinook salmon, and steelhead trout. In July and August 2014, an extensive series of magnetic field measurements were taken using a pair of submerged Geometrics magnetometers towed behind a survey vessel in four locations in the San Francisco estuary along profiles that cross the cable's path; these included the San Francisco-Oakland Bay Bridge (BB, the Richmond-San Rafael Bridge (RSR, the Benicia-Martinez Bridge (Ben and an area in San Pablo Bay (SP in which a bridge is not present. In this paper, we apply basic formulas that ideally describe the magnetic field from a DC cable summed vectorially with the background geomagnetic field (in the absence of other sources that would perturb the ambient field to derive characteristics of the cable that are otherwise not immediately observable. Magnetic field profiles from measurements taken along 170 survey lines were inspected visually for evidence of a distinct pattern representing the presence of the cable. Many profiles were dominated by field distortions unrelated to the cable caused by bridge structures or other submerged objects, and the cable's contribution to the field was not detectable. BB, with 40 of the survey lines, did not yield usable data for these reasons. The unrelated anomalies could be up to 100 times greater than those from the cable. In total, discernible magnetic field profiles measured from 76 survey lines were regressed against the equations, representing eight days of measurement. The modeled field anomalies due to the cable (the difference between the maximum and minimum field along the survey line at the cable crossing were virtually identical to the measured values. The

  16. Modeling Magnetic Fields from a DC Power Cable Buried Beneath San Francisco Bay Based on Empirical Measurements.

    Science.gov (United States)

    Kavet, Robert; Wyman, Megan T; Klimley, A Peter

    2016-01-01

    The Trans Bay Cable (TBC) is a ±200-kilovolt (kV), 400 MW 85-km long High Voltage Direct Current (DC) buried transmission line linking Pittsburg, CA with San Francisco, CA (SF) beneath the San Francisco Estuary. The TBC runs parallel to the migratory route of various marine species, including green sturgeon, Chinook salmon, and steelhead trout. In July and August 2014, an extensive series of magnetic field measurements were taken using a pair of submerged Geometrics magnetometers towed behind a survey vessel in four locations in the San Francisco estuary along profiles that cross the cable's path; these included the San Francisco-Oakland Bay Bridge (BB), the Richmond-San Rafael Bridge (RSR), the Benicia-Martinez Bridge (Ben) and an area in San Pablo Bay (SP) in which a bridge is not present. In this paper, we apply basic formulas that ideally describe the magnetic field from a DC cable summed vectorially with the background geomagnetic field (in the absence of other sources that would perturb the ambient field) to derive characteristics of the cable that are otherwise not immediately observable. Magnetic field profiles from measurements taken along 170 survey lines were inspected visually for evidence of a distinct pattern representing the presence of the cable. Many profiles were dominated by field distortions unrelated to the cable caused by bridge structures or other submerged objects, and the cable's contribution to the field was not detectable. BB, with 40 of the survey lines, did not yield usable data for these reasons. The unrelated anomalies could be up to 100 times greater than those from the cable. In total, discernible magnetic field profiles measured from 76 survey lines were regressed against the equations, representing eight days of measurement. The modeled field anomalies due to the cable (the difference between the maximum and minimum field along the survey line at the cable crossing) were virtually identical to the measured values. The modeling

  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. San Luis Valley waterbird plan : Draft

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The goal of this plan is "to provide and protect a habitat base of sufficient quality and quantity to maintain healthy viable populations of waterbirds in the San...

  20. Historical methyl mercury in San Francisco Bay

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — San Francisco Bay, California is considered a mercury-impaired watershed. Elevated concentrations of mercury are found in water and sediment as well as fish and...

  1. Bathymetry--Offshore of San Francisco, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of DS 781 presents data for the bathymetry and shaded-relief maps of Offshore of San Francisco, California (raster data file is included in...

  2. Backscatter A [8101]--Offshore San Gregorio, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of SIM 3306 presents data for the acoustic-backscatter map (see sheet 3, SIM 3306) of the Offshore of San Gregorio map area, California. Backscatter data...

  3. Habitat--Offshore of San Francisco, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of DS 781 presents data for the habitat map of the seafloor of the Offshore of San Francisco map area, California. The vector data file is included in...

  4. San Antonio Bay 1986-1989

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The effect of salinity on utilization of shallow-water nursery habitats by aquatic fauna was assessed in San Antonio Bay, Texas. Overall, 272 samples were collected...

  5. Habitat--Offshore of San Francisco, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of DS 781 presents data for the habitat map of the seafloor of the Offshore of San Francisco map area, California. The vector data file is included in...

  6. Contours--Offshore of San Francisco, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of DS 781 presents data for the bathymetric contours for several seafloor maps of the Offshore of San Francisco map area, California. The vector data file...

  7. Backscatter B [7125]--Offshore San Gregorio, California

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This part of SIM 3306 presents data for the acoustic-backscatter map (see sheet 3, SIM 3306) of the Offshore of San Gregorio map area, California. Backscatter data...

  8. San Bernardino National Wildlife Refuge contaminant study

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The San Bernardino National Wildlife Refuge was established in 1982 for the protection and management of endangered desert fishes which are indigenous to the Rio...

  9. An Archeological Survey of the San Diego River

    Science.gov (United States)

    1975-08-27

    Indian populations and to arable landa and water, Father Serra moved Mission San Diego de Aleala ------ to the site of Nipoguay, an Indian village located...NN ARCHAEOLOGICAL SRE OF THE ~i7 SAN DIEGORIE I If SAN DIEGO STATE UNIVERSITY FOUNDATION DEPARTMENT OF THE ARMY, CORPS OF ENGINEERS kSAN DIEGO STATE...the San Diego River Archeological Survey A. PERFORMING ORG.ý REPORT NUM§ER na 7. AUTHOR(s) 6. CONTRACT OR GRANT NUMBER(*) - I- PERFORMING ORGANIZATION

  10. Rafael Mérida Jiménez, Transmisión y difusión de la literatura caballeresca. Doce estudios de recepción cultural hispánica (siglos XIII-XVII), Lleida, Edicions de la Universitat de Lleida,2013. 214 pp.

    OpenAIRE

    Neri, Stefano

    2013-01-01

    Reseña del libro: Rafael Mérida Jiménez, Transmisión y difusión de la literatura caballeresca. Doce estudios de recepción cultural hispánica (siglos XIII-XVII), Lleida, Edicions de la Universitat de Lleida,2013. 214 pp.

  11. ALONSO, Jorge; MIRANDA, Rafael y CAMACHO, Dolores (comp., Tarántula: institución y hacer pensante por la autonomía. Castoriadis en la trama de Latinoamérica. Entre academia y política.

    Directory of Open Access Journals (Sweden)

    EMILIANO ALDEGANI

    2015-06-01

    Full Text Available ALONSO, Jorge; MIRANDA, Rafael y CAMACHO, Dolores (comp.,Tarántula: institución y hacer pensante por la autonomía.Castoriadis en la trama de Latinoamérica. Entre academia ypolítica. México, Publicaciones de la Casa Chata. 2014.

  12. Uplifting of the Jiamusi Block in the eastern Central Asian Orogenic Belt, NE China: evidence from basin provenance and geochronology

    Science.gov (United States)

    Liu, Yongjiang; Wen, Quanbo; Han, Guoqing; Li, Wei

    2010-05-01

    The main part of Jiamusi Block, named as Huanan-Uplift, is located in the northeastern Heilongjiang, China. The Huanan-Uplift is surrounded by many relatively small Mesozoic-Cenozoic basins, e.g. Sanjiang Basin, Hulin Basin, Boli Basin, Jixi Basin, Shuangyashan Basin and Shuanghua Basin. However previous research works were mainly focused on stratigraphy and palaeontology of the basins, therefore, the coupling relation between the uplift and the surrounding basins have not been clear. Based on the field investigations, conglomerate provenance studies of the Houshigou Formation in Boli Basin, geochronology of the Huanan-Uplift basement, we have been studied the relationships between Huanan-Uplift and the surrounding basins. The regional stratigraphic correlations indicates that the isolated basins in the area experienced the same evolution during the period of the Chengzihe and the Muling Formations (the Early Cretaceous). The paleogeography reconstructions suggest that the area had been a large-scale basin as a whole during the Early Cretaceous. The Huanan-Uplift did not exist. The paleocurrent directions, sandstone and conglomerate provenance analyses show that the Huanan-Uplift started to be the source area of the surrounding basins during the period of Houshigou Formation (early Late Cretaceous), therefore, it suggests that the Jiamusi Block commenced uplift in the early Late Cretaceous. The granitic gneisses in Huanan-Uplift give 494-415 Ma monazite U-Th-total Pb ages, 262-259 Ma biotite and 246-241 Ma K-feldspar 40Ar/39Ar ages. The cooling rates of 1-2 ℃/Ma from 500-260 Ma and 10-11 ℃/Ma from 260-240 Ma have been calculated based on the ages. This suggests that the Jiamusi Block had a rapid exhumation during late Permian, which should be related to the closure of the Paleo-Asian Ocean between the Siberian and North China continents. It is concluded that during the late Paleozoic the Jiamusi Block was stable with a very slow uplifting. With the closure of

  13. Rock physics of fibrous rocks akin to Roman concrete explains uplifts at Campi Flegrei Caldera

    Science.gov (United States)

    Vanorio, Tiziana; Kanitpanyacharoen, Waruntorn

    2015-08-01

    Uplifts in the Campi Flegrei caldera reach values unsurpassed anywhere in the world (~2 meters). Despite the marked deformation, the release of strain appears delayed. The rock physics analysis of well cores highlights the presence of two horizons, above and below the seismogenic area, underlying a coupled process. The basement is a calc-silicate rock housing hydrothermal decarbonation reactions, which provide lime-rich fluids. The caprock above the seismogenic area has a pozzolanic composition and a fibril-rich matrix that results from lime-pozzolanic reactions. These findings provide evidence for a natural process reflecting that characterizing the cementitious pastes in modern and Roman concrete. The formation of fibrous minerals by intertwining filaments confers shear and tensile strength to the caprock, contributing to its ductility and increased resistance to fracture.

  14. Uplift and Subsidence Associated with the Great Aceh-Andaman Earthquake of 2004

    Science.gov (United States)

    2006-01-01

    The magnitude 9.2 Indian Ocean earthquake of December 26, 2004, produced broad regions of uplift and subsidence. In order to define the lateral extent and the downdip limit of rupture, scientists from Caltech, Pasadena, Calif.; NASA's Jet Propulsion Laboratory, Pasadena, Calif.; Scripps Institution of Oceanography, La Jolla, Calif.; the U.S. Geological Survey, Pasadena, Calif.; and the Research Center for Geotechnology, Indonesian Institute of Sciences, Bandung, Indonesia; first needed to define the pivot line separating those regions. Interpretation of satellite imagery and a tidal model were one of the key tools used to do this. These pre-Sumatra earthquake (a) and post-Sumatra earthquake (b) images of North Sentinel Island in the Indian Ocean, acquired from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra spacecraft, show emergence of the coral reef surrounding the island following the earthquake. The tide was 30 plus or minus 14 centimeters lower in the pre-earthquake image (acquired November 21, 2000) than in the post-earthquake image (acquired February 20, 2005), requiring a minimum of 30 centimeters of uplift at this locality. Observations from an Indian Coast Guard helicopter on the northwest coast of the island suggest that the actual uplift is on the order of 1 to 2 meters at this site. In figures (c) and (d), pre-earthquake and post-earthquake ASTER images of a small island off the northwest coast of Rutland Island, 38 kilometers east of North Sentinel Island, show submergence of the coral reef surrounding the island. The tide was higher in the pre-earthquake image (acquired January 1, 2004) than in the post-earthquake image (acquired February 4, 2005), requiring subsidence at this locality. The pivot line must run between North Sentinel and Rutland islands. Note that the scale for the North Sentinel Island images differs from that for the Rutland Island images. The tidal model used for this study was

  15. Carbon isotopic records inpaleosols over the Pliocene in Northern China: Implication on vegetation developmentand Tibetan uplift

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    Carbon isotopic composition of pedogenic carbonate can be used to estimate the proportion of C4 and C3 plants. Here we present carbon isotopic data of carbonate in a red earth section at Xifeng, central Loess Plateau. Results show that C4 vegetation increased in ~4.4 Ma B.P., stabilized between 4.0 and 3.0 Ma B.P. The character and timing of C4 expansion on the Loess Plateau are similar, but different with other localities, e.g. Pakistan and Africa, implying that regional climate changes were main factors driving the expansion of C4 plants. This event is comparable in timing with increased aridity evidenced by Xifeng grain size and North Pacific eolian dust records. Therefore we argue that the Pliocene expansion of C4 plants in northern China might have been caused by the increased aridity, which in turn might be related to rapid uplift of the Tibetan Plateau.

  16. Bio-electro catalytic treatment of petroleum produced water: Influence of cathode potential upliftment.

    Science.gov (United States)

    Jain, Pratiksha; Srikanth, Sandipam; Kumar, Manoj; Sarma, Priyangshu M; Singh, M P; Lal, Banwari

    2016-11-01

    Treatment of petroleum produced water (PPW) was studied using bioelectrochemical system (BES) under uplifted cathode potential. The treatment efficiency in terms of COD and hydrocarbon removal was observed at 91.25% and 76.60% respectively, along with the reduction in TDS during BES operation under 400mV of cathode potential. There was also a reduction in concentration of sulfates, however, it was not significant at, since oxidative conditions are being maintained at anode. Improved oxidation of PPW at anode also resulted in good power output (-20.47mA) and also depicted improved fuel cell behaviour. The electrochemical analysis in terms of cyclic/linear sweep voltammetry also showed well correlation with the observed treatment efficiencies. The microbial dynamics of the BES after loading real field wastewater showed the dominance of species that are reported to be effective for petroleum crude oil degradation. Copyright © 2016 Elsevier Ltd. All rights reserved.

  17. Analysis of uplift loads of precast-concrete piles in porous soils

    Directory of Open Access Journals (Sweden)

    Stélio Maia Menezes

    2006-01-01

    Full Text Available This paper presents the analysis of uplift load tests in three precast-concrete piles carried out in a collapsible sandy soil. The piles with 12 meters (m length and 0.17 x 0.17 square meter (m2 cross section were instrumented with strain gauges, in order to know the load transfer in depth. Three tests performed in a slow maintained load way were conducted in a natural condition of moisture content soil. A fourth test was carried out after the previous soaking of the soil around the pile head. The tests were performed in the experimental research site at the Universidade Estadual Paulista “Júlio de Mesquita Filho” (Unesp. The results obtained were evaluated by analytical and empirical methods.

  18. Geochronological constraints on granitic magmatism, deformation, cooling and uplift on Bornholm, Denmark

    DEFF Research Database (Denmark)

    Waight, Tod Earle; Frei, Dirk; Storey, Michael

    2012-01-01

    U-Pb ages on zircon from 11 samples of granitoid and gneiss from the Danish island of Bornholm have been obtained using laser ablation - inductively coupled plasma mass spectrometry. These ages indicate that the felsic basement rocks were generated over a restricted period in the Mesoproterozoic......, and is therefore part of a larger magmatic event affecting the region. Argon and Rb-Sr ages on various minerals from a single sample of the Rønne Granite provide constraints on the cooling and uplift history of the basement in the region. Using recently published closure temperatures for each isotopic system...... a cooling curve is generated that illustrates a period of rapid cooling immediately after and/or during crystallisation. This likely represents the period of emplacement, crystallisation, and deformation of the felsic basement. The modelled rate of post-emplacement cooling is highly dependent on the choice...

  19. The gravity signature of mantle uplift from impact modeling craters on the Moon

    Science.gov (United States)

    Milbury, Colleen; Johnson, Brandon C.; Melosh, H. Jay; Collins, Gareth S.; Blair, David M.; Soderblom, Jason M.; Zuber, Maria T.

    2014-11-01

    NASA’s dual Gravity Recovery and Interior Laboratory (GRAIL) spacecraft have globally mapped the lunar gravity field at unprecedented resolution; this has enabled the study of lunar impact craters of all sizes and ages. Soderblom et al. [2014, LPSC abstract #1777] calculated the residual Bouguer anomalies for ~2700 craters 27-184 km in diameter (D). They found that the residual central Bouguer anomaly of craters smaller than 100 km is essentially zero, that there is a transition for 100-150 km, and that craters larger than 184 km have a positive residual Bouguer anomaly that increases with increasing crater size. We use the iSALE shock physics hydrocode to model crater formation, including the effects of porosity and dilatancy (shear bulking). We use strength parameters of gabbroic anorthosite for a 35-km-thick crust, and dunite for the mantle. Our dunite impactors range in size from 6-30 km, which produce craters 86-450 km in diameter. We calculate the Bouguer gravity anomaly due solely to mantle uplift. We eliminate the effects of pressure and temperature on density by setting the output densities from the simulations to 2550 kg/m^3 if they are below the cutoff value of 3000 kg/m^3, and 3220 kg/m^3 if they are above. We compare our modeling results to gravity data from GRAIL. We find that the crater size at which mantle uplift dominates the crater gravity occurs at a crater diameter that is close to the complex crater to peak-ring basin transition. This is in agreement with the observed trend reported by Soderblom et al. [2014, LPSC abstract #1777].

  20. Ordovician gas exploration breakthrough in the Gucheng lower uplift of the Tarim Basin and its enlightenment

    Directory of Open Access Journals (Sweden)

    Wang Zhaoming

    2014-10-01

    Full Text Available A steady high yield natural gas flow was tapped in the Ordovician strata of Well Gucheng 6 drilled in the Gucheng lower uplift in the Tarim Basin in 2012, marking the discovery of another carbonate gas exploration field after the other two fields in the middle and northern Tarim Basin (the so called Tazhong and Tabei in the industry. The exploration in the Gucheng lower uplift has experienced three stages: the first stage, marine facies clastic exploration from 1995 to 2003, focusing on the Devonian Donghe sandstone lithologic traps, the Silurian overlapping lithologic traps, and the Upper Ordovician shelf slope turbidites; the second stage focusing on the reef shoal carbonate reservoirs from 2003 to 2006, during which oil and gas were first discovered in Well Gucheng 4; the third stage can be divided into two periods, in the first period, deeper insight into interbed karstification reservoir exploration, intense research on tricky seismic issues, selection of favorable zones, and 3D seismic deployment in advance laid a robust foundation for breakthroughs in oil and gas exploration; and during 2009–2012, through an in-depth investigation, Well Gucheng 6 was drilled, bringing about the major breakthrough in oil and gas exploration in this study area. This success proves that the Lower Paleozoic carbonate rocks in the Gucheng area have good geological conditions and broad prospect for oil and gas exploration, which give us enlightenment in three aspects: a. new insight into geologic understanding is the prerequisite of exploration breakthrough; b. addressing bottleneck technologies, and acquiring 3D seismic data are the guarantees of exploration breakthrough; and c. emancipation of mind and persistent exploration are key to the findings in new domains.