Dynamic rupture simulation of the 2008 M w 7.9 Wenchuan earthquake with heterogeneous initial stress

NCUIR > College of Earth Sciences > Department of Earth Sciences > journal & Dissertation > Item 987654321/103531

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Title:	Dynamic rupture simulation of the 2008 M w 7.9 Wenchuan earthquake with heterogeneous initial stress
Authors:	馬國鳳;Wen, Yi-Ying;Oglesby, David D;Duan, Benchun;Ma, Kuo-Fong
Contributors:	地球科學學院地球科學學系
Keywords:	Asia;China;earthquakes;Far East;Longmen Mountains;magnitude;rupture;seismicity;Seismology;Sichuan Basin;simulation;slip rates;stress;Wenchuan earthquake 2008
Date:	2012-08-01
Issue Date:	2026-04-23 11:32:17 (UTC+8)
Publisher:	Seismological Society of America
Abstract:	摘要： The rupture process and tectonic surroundings of the 2008 Wenchuan, China, earthquake are both complex in a way that might be related to the heterogeneous stress field of the Longmen Shan region. In this study, we construct dynamic models with heterogeneous initial stress to reproduce a kinematic inversion result by Wen et al. (2012) and investigate the physical mechanisms of the variable slip pattern and rupture velocity in this event. The results show that, for the 2008 Wenchuan earthquake, (1) the rupture behavior and slip pattern can be explained by heterogeneities in initial stress and (2) the variations of rupture velocity and ground-motion pattern are strongly affected by both stress drop and fault strength. Our preferred dynamic model agrees with the kinematic model that the 2008 Wenchuan earthquake initiated with a slow velocity in the southwest, sped up in the segment with the largest slip, and then slowed down for the remaining propagation to the northeast. 出版者： Seismological Society of America 出版日期： 2012-08 出處： Bulletin of the Seismological Society of America, 2012-08, Vol.102 (4), p.1892-1898 資源來源： GeoScienceWorld 版權： GeoRef, Copyright 2020, American Geosciences Institute. Reference includes data from GeoScienceWorld Alexandria, VA USA United States. Abstract, Copyright, Seismological Society of America 識別號： ISSN: 0037-1106 識別號： DOI: 10.1785/0120110153
Appears in Collections:	[Department of Earth Sciences ] journal & Dissertation

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