Evento principal y réplicas importantes del Terremoto de Limón
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| Autores: | , , , , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2011 |
| Descripción: | Combining local, regional and teleseismic seismological information, we find the principal aftershocks (Mc≥ 4.4) of the Limon earthquake of April 22, l991 (Mw=7.7). They define a rupture area of 85 x 45 km2, it is similar to that found using small magnitude earthquakes (Mc≥ 4.4). Using the arrivals reported by seismological stations located at different epicentral distances, allow us to obtain a focal mechanism solution that corresponds with a thrust oblique faulting event (strike 120°, dip angle 30° , slip 63°). Our interpretation of an acelerogram obtained 70 km southwest of the mainshock epicenter, permit us to identify five subevents during the rupture process, this defines the Limon earthquake as a complex and multiple event. Finally, we find that many aftershocks occurred on thrust and strike slip secondary faults; they are located a different distances and trends from the mainshock epicenter. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/13434 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/geologica/article/view/13434 |
| Access Level: | acceso abierto |