Inestabilidades de laderas de roca generadoras de tsunami durante el terremoto de Aisen del 21 de abril de 2007, sur de Chile (45.5° S).
Tsunamigenic, earthquake-triggered rock slope failures during the April 21, 2007 Aisén earthquake, southern Chile (45.5°S).
| dc.contributor | en-US | |
| dc.contributor | es-ES | |
| dc.creator | Sepulveda, Sergio A. | |
| dc.creator | Serey, Alejandra | |
| dc.date | 2010-07-01 | |
| dc.identifier | http://www.andeangeology.cl/index.php/revista1/article/view/V36n1-a10 | |
| dc.identifier | 10.5027/andgeoV36n1-a10 | |
| dc.description | El 21 de abril de 2007 un terremoto superficial cortical (Mw 6,2) en el area del Fiordo Aisen desencadeno cientos de remociones en masa en la zona epicentral. Entre estas, se generaron varias inestabilidades en laderas rocosas escarpadas, tales como deslizamientos, caidas y avalanchas de rocas. El violento impacto de las masas disgregadas de roca en las aguas del fiordo genero tsunamis locales, que causaron diez victimas fatales y un importante dano en granjas salmoneras ubicadas a lo largo de las costas del fiordo. Observaciones de terreno sugieren controles geotecnicos y geomorfologicos en la ubicacion y modos de falla de las remociones en masa, asociados a la presencia de fallas y relieve abrupto, respectivamente. Este evento es un ejemplo de un tipo de peligro geologico que no ha sido previamente detectado ni abordado en los fiordos de la Patagonia Chilena, revelando la necesidad de identificar y comprender estos fenomenos geologicos en futuras evaluaciones de peligro en la region. | es-ES |
| dc.description | The April 21, 2007 shallow crustal earthquake (Mw 6.2) in the Aisén Fjord area triggered hundreds of landslides around the epicentral zone. Among those, several rock slope failures such as rock slides, rock falls and rock avalanches were induced on the steep fjord slopes. The violent impact of the disrupted rock masses into the fjord generated local tsunamis that caused ten fatalities and extensive damage to salmón farms located along the fjord shores. Field observations suggested that geotechnical and geomorphological factors controlled the landslide locations and failure modes, associated with the presence of faults and topographic relief, respectively. This event is an example of a geological hazard that has not been previously addressed in the Chilean Patagonian fjordland, revealing the need for identifying and understanding these geological phenomena in future hazard assessments in the región. | en-US |
| dc.format | application/pdf | |
| dc.format | text/html | |
| dc.language | eng | |
| dc.publisher | Servicio Nacional de Geología y Minería | en-US |
| dc.relation | http://www.andeangeology.cl/index.php/revista1/article/view/V36n1-a10/817 | |
| dc.relation | http://www.andeangeology.cl/index.php/revista1/article/view/V36n1-a10/html | |
| dc.source | Andean Geology; Vol 36, No 1 (2009); 131-136 | es-ES |
| dc.source | Andean Geology; Vol 36, No 1 (2009); 131-136 | en-US |
| dc.source | 0718-7106 | |
| dc.source | 0718-7092 | |
| dc.title | Inestabilidades de laderas de roca generadoras de tsunami durante el terremoto de Aisen del 21 de abril de 2007, sur de Chile (45.5° S). | es-ES |
| dc.title | Tsunamigenic, earthquake-triggered rock slope failures during the April 21, 2007 Aisén earthquake, southern Chile (45.5°S). | en-US |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | es-ES | |
| dc.type | en-US |
This item appears in the following Collection(s)
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Andean Geology
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