典型文献
Temporal evolution of the focal mechanism consistency of the 2021 Yangbi MS 6.4 earthquake sequence in Yunnan
文献摘要：
Using the Cut And Paste (CAP) method, we invert the focal mechanism of 38 moderate earthquakes (MS≥3.0) recorded by Yunnan seismic network and analyze the corresponding focal mechanism consistency based on the minimum spatial rotation angle. Our results indicate that the MS 6.4 mainshock is induced by a lateral strike slip fault (with a rake angle of～-165°) and a little normal-faulting component event along a nearly vertical plane (dipping angle～ 79° and strike ～138°). Combining our results with high resolution catalog, we argue that the seismogenic fault of this earthquake sequence is a secondary fault western to the major Weixi-Qiaohou-Weishan fault. The focal mechanism evolution can be divided into three periods. During the first period, the foreshock sequence, the focal mechanism consistency is the highest (KA<36°);during the second period which is shortly after the mainshock, the focal mechanism shows strong variation with KA ranging from 8° to 110°; during the third period, the seismicity becomes weak and the focal mechanism of the earthquakes becomes more consistent than the second period (18°
文献关键词：
中图分类号：
作者姓名：
Xiaobin Li;Mingpei Jin;Ya Huang;Wenjian Cha;Jun Wang;Sihai Li
作者机构：
Yunnan Earthquake Agency,Kunming,650224,Yunnan,China;Dali Center of the China Seismic Experimental Site,Dali,671000,Yunnan,China
文献出处：
引用格式：
[1]Xiaobin Li;Mingpei Jin;Ya Huang;Wenjian Cha;Jun Wang;Sihai Li-.Temporal evolution of the focal mechanism consistency of the 2021 Yangbi MS 6.4 earthquake sequence in Yunnan)[J].地震研究进展（英文）,2022(02):11-20
A类：
Weixi,Qiaohou
B类：
Temporal,evolution,focal,mechanism,consistency,Yangbi,sequence,Yunnan,Using,Cut,And,Paste,CAP,method,invert,moderate,earthquakes,recorded,by,network,analyze,corresponding,minimum,spatial,rotation,angle,Our,results,indicate,that,mainshock,induced,lateral,strike,slip,rake,little,normal,faulting,component,event,along,nearly,vertical,plane,dipping,Combining,our,resolution,catalog,argue,seismogenic,this,secondary,western,major,Weishan,can,divided,into,three,periods,During,first,foreshock,highest,KA,during,which,shortly,after,shows,strong,variation,ranging,from,third,seismicity,becomes,weak,consistent,than,suggest,some,extent,represents,coherence,between,local,tectonic,stress,regime,state,each,individual,Furthermore,linearity,distribution,may,serve,indicators,identification
AB值：
0.531916
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