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利用P波初动资料求解汶川地震及其强余震震源机制解
引用本文:胡幸平,俞春泉,陶开,崔效锋,宁杰远,王艳华.利用P波初动资料求解汶川地震及其强余震震源机制解[J].地球物理学报,2008,51(6):1711-1718.
作者姓名:胡幸平  俞春泉  陶开  崔效锋  宁杰远  王艳华
作者单位:1.中国地震局地壳应力研究所,北京 100085;2.北京大学地球与空间科学学院地球物理系,北京 100871
基金项目:中央级公益性科研院所基本科研业务费专项基金 , 国家重点基金研究发展规划(973计划)  
摘    要:通过查阅国家地震台网、各省区域地震台网和流动地震台网,以及IRIS数据中心给出的一些国际台站的数字波形记录,读取P波初动方向,利用格点尝试法计算了2008年5月12日汶川8.0级(MS)特大地震以及其后发生的部分强余震(44次)的震源机制解.这组震源机制解是对哈佛大学已公布的9个地震的最佳双力偶解的很好补充.

关 键 词:  汶川地震" target="_blank">face="Verdana">汶川地震  震源机制解  P波初动  格点尝试法  
收稿时间:2008-10-6
修稿时间:2008-10-13

Focal mechanism solutions of Wenchuan earthquake and its strong aftershocks obtained from initial P wave polarity analysis
HU Xing-Ping,YU Chun-Quan,TAO Kai,CUI Xiao-Feng,NING Jie-Yuan,WANG Yan-Hua.Focal mechanism solutions of Wenchuan earthquake and its strong aftershocks obtained from initial P wave polarity analysis[J].Chinese Journal of Geophysics,2008,51(6):1711-1718.
Authors:HU Xing-Ping  YU Chun-Quan  TAO Kai  CUI Xiao-Feng  NING Jie-Yuan  WANG Yan-Hua
Institution:1.Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China;2.School of Earth and Space Sciences, Peking University, Beijing 100871, China
Abstract:We firstly read out initial P wave polarity from the digital wave form data given by Chinese national seismic networks, regional seismic network, temporary seismic network as well as some IRIS stations. Then employing grid point test method we obtain Focal Mechanism Solution of the great Wenchuan earthquake, which measured at 8.0 MS occurred at 14∶28 CST on May 12, 2008 in Sichuan province of China as well as those of some of its strong aftershocks (M≥ 5.0). This group of focal mechanism solutions are very important complement of 9 optimized double-couple solutions published by Harvard university.
Keywords:Wenchuan earthquake  Focal mechanism solution  Initial P wave polarity  Grid point test method
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