北京大学学报：自然科学版2011，Vol.47Issue(6)：1063-1072,10.
汶川地震序列震源机制解研究
Research on Focal Mechanism Solutions of Wenchuan Earthquake Sequence
摘要
Abstract
Based on the initial P wave polarity of digital wave form data given by Chinese National Seismic Network, regional seismic network, temporary seismic networks as well as some IRIS stations, employing the improved grid point test method, 121 reliable focal mechanism solutions of Wenchuan earthquake sequence （M≥ 4.0） are determined. The results show that the initial rupture of mainshock is purely thrust. The aftershocks of Wenchuan earthquake sequence are mostly thrust or strike-slip, and there is a characteristic of subsection distribution. The P axes shows a dominant distribution in the directions of NWW-SEE and NEE-SWW.关键词
汶川地震序列/P波初动/震源机制解Key words
Wenchuan earthquake sequence/initial P wave polarity/focal mechanism solution分类
天文与地球科学引用本文复制引用
崔效锋,胡幸平,俞春泉,陶开,王艳华,宁杰远..汶川地震序列震源机制解研究[J].北京大学学报：自然科学版,2011,47(6):1063-1072,10.基金项目
国家公益性行业科研专项（201011068）、国家科技支撑计划（WFSD-07）和中国地震局地壳应力研究所基本科研业务专项经费（ZDJ2009.1）资助 （）
