000019162 001__ 19162
000019162 005__ 20170118182302.0
000019162 04107 $$aeng
000019162 046__ $$k2017-01-09
000019162 100__ $$aMedina, Francisco
000019162 24500 $$aProbabilistic Seismic Hazard Analysis for Chile

000019162 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019162 260__ $$b
000019162 506__ $$arestricted
000019162 520__ $$2eng$$aA probabilistic seismic hazard analysis (PSHA) of Chile is presented, based on a newly assembled homogeneous and complete catalog of unique and independent (Poissonian) seismic events affecting Chile. All seismogenic zones present in Chile are included in the model: subduction, shallow, intermediate, deep, and outer-rise seismicity, and the main Quaternary faults located within the country or in close proximity to its borders (in Argentina, Bolivia, and Peru). The effect of the Chile triple junction at the Taitao Peninsula is considered, and consequently is reflected in the results obtained. The PSHA included: (a) Gutenberg-Richter rate of exceedance models developed for all the seismogenic zones considered; (b) the most up-to-date ground-motion prediction models available for the seismogenic zones considered; and (c) both, a rupture model and the three-dimensional geometry of the subduction slab. Several features of the model were verified with three recent events: (1) 2005 Tarapacá, Mw=7.9; (2) 2010 Maule, Mw=8.8; and (3) 2014 Iquique, Mw=8.2. The results show good agreement with the data observed. Disaggregation of the probabilities of exceedance show that most of the risk is due to magnitude 7.8 or greater subduction events, located at approximately 40 km from the considered sites. The hazard is finally expressed in terms of peak ground acceleration and spectral acceleration maps at 10% and 2% probability of exceedance in 50 years for Continental and Insular Chile, suitable for seismic code applications. These maps include Eastern and Salas y Gómez Islands, Desventuradas Archipelago (San Ambrosio and San Félix Islands), Juan Fernández Archipelago, the southern tip of Peru, southwestern Bolivia, and western Argentina.

000019162 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019162 653__ $$aProbabilistic seismic hazard analysis; subduction hazard; Chile seismic hazard; Chilean seismic code; Western Argentina seismic hazard.

000019162 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019162 720__ $$aMedina, Francisco$$iHarmsen, Stephen C.$$iBarrientos, Sergio E.
000019162 8560_ $$ffischerc@itam.cas.cz
000019162 8564_ $$s1855930$$uhttps://invenio.itam.cas.cz/record/19162/files/2994.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2994.
000019162 962__ $$r16048
000019162 980__ $$aPAPER