2016年11月25日阿克陶M_S6.7地震及其余震序列精定位  

RELOCATION OF MAINSHOCK AND AFTERSHOCKS OF AKETAO EARTHQUAKE WITH M_S6.7 OCCURRED ON NOV 25^(th),2016

作　　者：孔祥艳[1,2] 陈向军[1] 钟世军[3] 刘建明[1] KONG Xiang-yan CHEN Xiang-jun ZHONG Shi-jun LIU Jian-ming(Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China Institute of Geophysics, China Earthquake Adiministration. Beijing 100081, China Earthquake Administration of Beijing. Beijing 100080, China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011 [2]中国地震局地球物理研究所,北京100081 [3]北京市地震局,北京100080

出　　处：《内陆地震》2017年第2期110-114,共5页Inland Earthquake

基　　金：中国地震局地震科技星火计划(XH17043Y;XH15046);中国地震局测震台网青年骨干培训专项任务(20170627);中国地震局‘三结合’课题(163105)联合资助

摘　　要：使用双差定位法对2016年11月25日阿克陶M_S6.7地震及791个余震进行了重新定位,获得了481个地震的震源位置参数。结果表明:余震沿木吉盆地北缘断裂两侧分布,展布长度约70 km,余震分布的优势方向与木吉盆地北缘断裂的走向基本一致;余震震源深度主要集中分布在2~14km,此次地震的破裂方向可能由深部到浅部破裂。结合震源机制及主震和余震序列的空间分布特征可推断,木吉盆地北缘断裂是阿克陶地震的主要发震构造。Mainshock and aftershocks of Aketao earthquake with Ms6.7 occurred on November 25th, 2016. It were relocated by applying the double difference method, and we relocated 481 earthquakes in Aketao region. Earthquake relocation results showed that the aftershoeks are distributed along sides of northern margin of Muji Basin fault and spread approximately 70 km in length, and dominant direction of aftershoeks distribution was consistent with direction of northern margin of Muji Ba- sin fault ; Focal depths were confined in a depth range within 2 - 14 km, and direction of the earthquake may be ruptured from deep to shallow. Combined with the focal mechanism and the spatial distribution of mainshock and aftershoeks, it is inferred that northern margin of Muji Basin fault was main seismogenic structure of Aketao earthquake.

关 键 词：阿克陶地震 余震序列 双差定位 木吉盆地北缘断裂 

分 类 号：P315.7[天文地球—地震学]