Crustal Deformation Background Simulation of the Kekexili M_S8.1 Earthquake Happening in 2001

查看全文 作　　者：Cheng [1,2]Jia;Gan [1]Weijun;Wang [3]Zehe;Chen [1]Weitao;Xiao [1]Genru

机构地区：[1]State Key Laboratory of Earthquake Dynamics, Institute of Geology, CEA, Beijing 100029, China;[2]China Earthquake Networks Center, China Earthquake Administration, Beijing 100045, China;[3]Geological Survey and Design Department, Chongqing 136 Geological Group, Chongqing 401147, China

出　　处：《Earthquake Research in China》索引2009年第23卷第4期,共14页

基　　金：sponsored by the National Natural Science Foundation (40674055),China 摘　　要：Using the GPS velocity data from 27 stations around the Eastern Kunlun fault as constraints,we first invert the slip velocities of the Eastern Kunlun fault,the north boundary fault of the Qaidam basin,the Mani-Yushu fault and the Margai Caka fault before the Kekexili MS8.1 earthquake with a 3-D elastic half-space dislocation model. The deformation field calculated from the slip movement of these faults can be considered the deformation background field of the earthquake. Based on the deformation background field with tectonic implications,we have obtained the strain field and earthquake moment accumulation field. The results show that there are two obvious high moment accumulation rate regions,one of which is the Dongdatan-Xidatan segment of the Eastern Kunlun fault where the M_S8.1 earthquake occurred in 2001. 关键词：8.1级地震可可西里地壳形变边界断层仿真柴达木盆地弹性半空间 GPS站

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Crustal Deformation Background Simulation of the Kekexili M_S8.1 Earthquake Happening in 2001

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