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| Registros recuperados: 15 | |
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| Ioualalen, Mansour; Ratzov, G.; Collot, Jean-yves; Sanclemente, E.. |
| P>Shelf promontories exhibit very specific bathymetric features with regards to tsunamis. Because of their submerged cape morphology, a potential tsunami generated seawards of the promontory will exhibit a specific mode of propagation and coastal impact. To identify this peculiar tsunami signature, the Atacames Promontory, Ecuador, was chosen as a case study (another example is the shelf of the Nile delta, Egypt). The area is tectonically very active, hosts earthquakes among the most powerful recorded, as well as areas of slope instabilities that have triggered significant submarine landslides in the past (several cubic kilometres of volume). Both types of events are likely to be tsunamigenic. To examine the tsunami behaviour at the coastal area of the... |
| Tipo: Text |
Palavras-chave: Tsunamis; Site effects; Wave propagation; Submarine landslides; South America. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00200/31101/29509.pdf |
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| Scala, A.; Lorito, S.; Romano, F.; Murphy, Shane; Selva, J.; Basili, R.; Babeyko, A.; Herrero, A.; Hoechner, A.; Lovholt, F.; Maesano, F. E.; Perfetti, P.; Tiberti, M. M.; Tonini, R.; Volpe, M.; Davies, G.; Festa, G.; Power, W.; Piatanesi, A.; Cirella, A.. |
| The complexity of coseismic slip distributions influences the tsunami hazard posed by local and, to a certain extent, distant tsunami sources. Large slip concentrated in shallow patches was observed in recent tsunamigenic earthquakes, possibly due to dynamic amplification near the free surface, variable frictional conditions or other factors. We propose a method for incorporating enhanced shallow slip for subduction earthquakes while preventing systematic slip excess at shallow depths over one or more seismic cycles. The method uses the classic k(-2) stochastic slip distributions, augmented by shallow slip amplification. It is necessary for deep events with lower slip to occur more often than shallow ones with amplified slip to balance the long-term... |
| Tipo: Text |
Palavras-chave: Tsunamis; Seismic-probabilistic tsunami hazard assessment; Tsunami source models; Stochastic seismic slip distributions. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00619/73097/72233.pdf |
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| Ablain, Michaël; Dorandeu, Joël; Le Traon, Pierre-yves; Sladen, Anthony. |
| The Indian Ocean tsunami, which occurred on December 26, 2004, was the first to be clearly observed using satellite altimeters. The wave amplitude observed in deep-ocean by TOPEX and Jason-1 was close to 60 cm about 2 hours after the earthquake. Envisat crossed the tsunami wave 3h15 after the earthquake and measured a 35 cm wave. Even though it flew over the tsunami 7h20 after the earthquake, GFO still observed a wave close to 20 cm. To better extract the tsunami signal from altimeter measurements, a specific ocean variability mapping technique is used. This technique proves to be mandatory for discriminating tsunami waves from other ocean signals. Altimeter signals are then compared with those derived from the CEA (Commissariat à l'Energie Atomique) model... |
| Tipo: Text |
Palavras-chave: Wave analysis; Tsunamis; Earthquakes; Sea level changes; Satellite altimetry. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-1174.pdf |
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| Rodriguez, Mathieu; Maleuvre, Clement; Jollivet-castelot, Martin; D'Acremont, Elia; Rabaute, Alain; Lafosse, Manfred; Ercilla, Gemma; Vazquez, Juan-tomas; Alonso, Belen; Ammar, Abdellah; Gorini, Christian. |
| The active Eurasia-Nubia plate boundary runs across the Alboran Sea in theWestern Mediterranean Sea, where the connection between the Atlantic and Mediterranean water masses occurs. Earthquakes above magnitude M-w > 6 may favour the occurrence of landslides within contouritic drifts in the Alboran Sea. A compilation of recent multibeam data reveals for the first time the distribution of slope failures along the Xauen-Tofino banks, in the southern Alboran Sea. Here, we provide a detailed mapping and description of the morphology of eight Holocene landslides, including volume estimations of the failed mass and the related mass transport deposits (MTDs). The most voluminous landslide mobilized similar to 0.5 km(3) of sediment at the initial stage of slope... |
| Tipo: Text |
Palavras-chave: Tsunamis; Submarine landslides; Submarine tectonics and volcanism; Africa. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00474/58560/61118.pdf |
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| Espinoza, J.. |
| Se analizan datos de los sísmos ocurridos en el Ecuador desde 1901 a 1981 que aparecen principalmente en el Catálogo CERESIS. Ciento veinticinco sísmos de magnitud Ms>4, se han producido en la plataforma y en el continente, el 65% de todos los hepicentros fueron superficiales, es decir, que se produjeron a profundidades menores de 70 Km: las profundidades hipocentrales menores a 50 Km., se ubican preferentemente en la región de la plataforma submarina y sus magnitudes varían entre 6.5 y 8.7 en la escala de Richer. Cinco símos generaron tsunamis en los años 1906, 1933, 1953, 1958 y 1979. Se encontró que los daños ocurridos en las costas ecuatorianas han sido mínimos debido a su poco desarrollo hasta 1960, o debido a otros factores como la ocurrencia del... |
| Tipo: Journal Contribution |
Palavras-chave: Earthquakes; Tsunamis; Earthquakes; Http://aims.fao.org/aos/agrovoc/c_2440. |
| Ano: 1992 |
URL: http://hdl.handle.net/1834/2181 |
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| Chunga, K.; Quiñonez, M.F.. |
| The Ecuadorian shoreline is considered highly susceptible to tsunamis events of tectonic origin due to its closeness to the Nazca and South America plates subduction zone. Since 1906, eight tsunamis events have been witnessed along this coast. All have been related to seismic activity (earthquakes between Ms 6.9 to 8.9) on or near the Ecuadorian platform. Such tectonic environment favours the generation and surge of tsunamis in this region. The study area is located in the outer area of the lower basin of the Guayas River, in what is referred as the Canton General Villamil Playas. Three cores were retrieved from the supratidal coastal plain around Villamil at different horizontal distances from the Pacific shoreline. Villamil 1 was cored at 1128 m from... |
| Tipo: Journal Contribution |
Palavras-chave: Sediments; Marine geology; Tsunamis. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5768 |
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| Rentería, W.; Lynett, P.; Weiss, R.; De La Torre, G.. |
| Este informe contiene los resultados de dos campañas científicas realizadas para determinar los efectos físicos del impacto del tsunami de Honshu, japón, sobre las Islas Galápagos. Esta investigación de campo se llevó a cabo en dos etapas, la primera del 7 al 10 de abril y la segunda del 3 al 15 de mayo del 2011, y consistió en el reconocimiento y toma de datos en los puntos más afectados, que fueron determinados de acuerdo al modelamiento numérico, realizado para este efecto. |
| Tipo: Journal Contribution |
Palavras-chave: Tsunamis; Mathematical models; Fields; Surveys; Water levels; Data collections. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4719 |
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| Rentería, W.. |
| This study present the implementation of a Tsunami Forecast System for Galapagos Islands. This system is formed by the development of short and long term forecast models. The first is used in real time, with the information of the occurrence of a tsunami event in the pacific ocean, in order to predict the physical effects of the impact on islands. While, the long term forecast, is used to identify tsunami generation zones with potential threat to damage the islands and also is used to have a reference to evaluate an particular event. The numerical model used to get both forecasts is MOST (Method of Splitting Tsunamis) with ComMIT methodology (Community Model Interface for Tsunami), wich has been adapted to local conditions. |
| Tipo: Journal Contribution |
Palavras-chave: Prediction; Scale models; Tsunamis. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5769 |
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| This guide is prepared based on the Japanese document titled ‘Guidebook for Tsunami Preparedness in Local Hazard Mitigation Planning’ developed in March 1998 by the Government of Japan with the cooperation of the National Land Agency, the Ministry of Agriculture, the Forestry and Fisheries Structural Improvement Bureau, the Fisheries Agency, the Ministry of Transport, the Japan Meteorological Agency, the Ministry of Construction, and the Fire and Disaster Management Agency. |
| Tipo: Report |
Palavras-chave: Tsunamis; Disasters; Disasters; Http://aims.fao.org/aos/agrovoc/c_5082. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/3173 |
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| Este documento relata la experiencia de personas que sobrevivieron a uno de los más devastadores tsunamis del siglo XX: el maremoto chileno de 1960. Esta catástrofe no sólo afectó a los habitantes del centro sur de Chile, sino que también a los residentes de las costas de Hawaii y Japón, al otro lado del océano Pacífico. De las experiencias relatadas por las personas que enfrentaron el tsunami del 22 de mayo de 1960, se extrae un conjunto de lecciones respecto de a cómo actuar frente a un tsunami, acciones que permitieron salvar vidas, así como los comportamientos que conllevaron la pérdida de éstas. |
| Tipo: Book |
Palavras-chave: Tsunamis; Earthquakes; Disasters; Earthquakes; Disasters; Http://aims.fao.org/aos/agrovoc/c_2440; Http://aims.fao.org/aos/agrovoc/c_5082. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/1575 |
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| Rentería, W.. |
| Para la generación de mapas digitales de inundación es necesario tener presente los conceptos de cartografía y modelación numérica de tsunamis, usando como nexo a los Sistemas de Información Geográfica (SIG). La utilización SIG no es nuevo en el modelamiento de tsunamis, sin embargo el uso general de esta técnica en países como el Ecuador es reciente. Por esta razón, como contribución a la determinación del riesgo por tsunamis, se presenta esta metodología para elaborar cartas digitales de inundación basada en la unión de las técnicas SIG y el Proyecto TIME (Intercambio de mapas de inundación por Tsunamis). Los aspectos cartográficos considerados en la preparación de estos mapas son: la línea de costa de alta resolución y el uso de un mismo sistema de... |
| Tipo: Journal Contribution |
Palavras-chave: Tsunamis; Gis; Floods; Maps; Mathematical models; Mathematical models; Http://aims.fao.org/aos/agrovoc/c_24199. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/2360 |
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| Moreano, H.; Arreaga, P.; Nath, J.. |
| La disponibilidad de mareogramas de varios puertos de la costa continental del Ecuador y Galápagos, hizo posible realizar su análisis y entender el comportamiento del tsunami del 27 de febrero de 2010 en la costa nacional y en el archipiélago. En general los mareógrafos de la zona costera reciben la cresta de la primera onda minutos después de la hora pronosticada para la bajamar, cerca de las 08H30R (hora local) de la mañana del día sábado 27, registrándose por lo menos tres ondas de amplitudes que variaron entre 20 y 70 cm. y períodos que alcanzaron las 2 horas para posteriormente registrar anormalidades con amplitudes y períodos mucho menores respondiendo probablemente a las características propias de cada puerto. En la caleta Aeolian de la Isla Baltra... |
| Tipo: Journal Contribution |
Palavras-chave: Tsunamis; Tidal waves; Sea level. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/4654 |
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| Registros recuperados: 15 | |
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