防灾减灾学报
防災減災學報
방재감재학보
Seismological Research of Northeast China
2015年
3期
11-15
,共5页
陈作全%武成智%张淑洁%肖玉明%王迪
陳作全%武成智%張淑潔%肖玉明%王迪
진작전%무성지%장숙길%초옥명%왕적
前郭强震群%余震序列%震源机制
前郭彊震群%餘震序列%震源機製
전곽강진군%여진서렬%진원궤제
Qianguo strong earthquake swarm%aftershocks sequence%focal mechanism
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。
基于2013年吉林前郭M5.8級彊震群序列資料，分析其餘震序列空間分佈、縯化特徵、測震學指標b值及震源機製特徵等。結果髮現，前郭彊震群序列空間位置高度集中在長9km，寬5km的範圍內，餘震沿北西嚮分佈。序列中M4.0以上地震呈連髮特徵，M2.0~3.0地震缺乏，餘震主要集中在M1.0級以下，餘震序列b值較低且介于0.3~0.4之間，M5.0以上地震震源機製以逆遲為主，兼具少量走滑分量。
기우2013년길림전곽M5.8급강진군서렬자료，분석기여진서렬공간분포、연화특정、측진학지표b치급진원궤제특정등。결과발현，전곽강진군서렬공간위치고도집중재장9km，관5km적범위내，여진연북서향분포。서렬중M4.0이상지진정련발특정，M2.0~3.0지진결핍，여진주요집중재M1.0급이하，여진서렬b치교저차개우0.3~0.4지간，M5.0이상지진진원궤제이역충위주，겸구소량주활분량。
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.
