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

Yi Ying Wen, David D. Oglesby, Benchun Duan, Kuo Fong Ma

研究成果: 雜誌貢獻評論/辯論

16 引文 斯高帕斯(Scopus)

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 2008Wenchuan 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.

原文???core.languages.en_GB???
頁(從 - 到)1892-1898
頁數7
期刊Bulletin of the Seismological Society of America
102
發行號4
DOIs
出版狀態已出版 - 8月 2012

指紋

深入研究「Dynamic rupture simulation of the 2008 M w 7.9 Wenchuan earthquake with heterogeneous initial stress」主題。共同形成了獨特的指紋。

引用此