2013年前郭M5.8级强震群序列特征分析  

SEQUENCE ANALYSIS OF STRONG EARTHQUAKE GROUP IN THE M5.8 IN 2013

作　　者：陈作全 武成智 张淑洁 肖玉明 王迪 

机构地区：[1]敦化地震台,吉林敦化133700 [2]长白山火山监测站,吉林安图133600 [3]前郭县地震局,吉林前郭131100

出　　处：《防灾减灾学报》2015年第3期11-15,共5页Journal of Disaster Prevention And Reduction

基　　金：地震科技星火计划项目(项目编号XH14016Y)

摘　　要：基于2013年吉林前郭M5．8级强震群序列资料，分析其余震序列空间分布、演化特征、测震学指标b值及震源机制特征等。结果发现，前郭强震群序列空间位置高度集中在长9km，宽5km的范围内，余震沿北西向分布。序列中M4．0以上地震呈连发特征，M2．0～3．0地震缺乏，余震主要集中在M1．0级以下，余震序列b值较低且介于0．3～0．4之间，M5．0以上地震震源机制以逆冲为主，兼具少量走滑分量。Based on Strong earthquake swarm sequence data of Jilin Province Qianguo County in October 31, 2013, We analysis the spatial distribution characteristic of aftershock, earthquake sequence evolution, seismometry b-value and focal mechanism etc..The conclusion can be drawed,Qian Guo earthquake swarm sequence and the aftershocks space is highly concentrated in the 9 km long,5 km wide in scope, the distribution is along the North West direction.The strong earthquake in the sequence show a characteristics of continuous occurrence, aftershocks are mainly concentrated in the 0 - 1,and with a low b value between 0.3-0.4.

关 键 词：前郭强震群 余震序列 震源机制 

分 类 号：P315.63[天文地球—地震学]