 |
| Titel |
Preliminary re-evaluation of probabilistic seismic hazard assessment in Chile: from Arica to Taitao Peninsula |
| VerfasserIn |
F. Leyton, S. Ruiz, S. A. Sepúlveda |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7340
|
| Digitales Dokument |
URL |
| Erschienen |
In: 4th EGU Alexander von Humboldt Conference "The Andes: Challenge for Geosciences" ; Nr. 22 (2009-12-14), S.147-153 |
| Datensatznummer |
250014739
|
| Publikation (Nr.) |
 copernicus.org/adgeo-22-147-2009.pdf |
|
|
|
|
|
| Zusammenfassung |
| Chile is one of the most seismically active countries in the world; indeed,
having witnessed very large earthquakes associated with high horizontal peak
ground accelerations, the use of probabilistic hazard assessment is an
important tool in any decision-making. In the present study, we review all
the available information to improve the estimation of the probabilistic
seismic hazard caused by two main sources: shallow interplate, thrust
earthquakes and intermediate depth, intraplate earthquakes. Using previously
defined seismic zones, we compute Gutenberg-Richter laws and, along with
appropriate attenuation laws, revaluate the probabilistic seismic hazard
assessments in Chile. We obtain expected horizontal peak ground acceleration
with a 10% of probability of being exceeded in 50 years, reaching from
0.6 g up 1.0 g in the coast and between 0.4 g and 0.6 g towards the Andes
Mountains, with larger values in Northern part of the country. The present
study improves our knowledge of geological hazards in Chile, enabling the
mitigation of important human and material losses due to large earthquakes
in the future. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|