Fluid-driven seismicity in relatively stable continental regions:Insights from the February 3^(rd),2020 M_(S)5.1 Qingbaijiang isolated earthquake

查看全文 作　　者：Xinglin [1]Lei;Jianbao [2]Sun;Jinrong [3]Su

机构地区：[1]Geological Survey of Japan,National Institute of Advanced Industrial Science and Technology(AIST),Higashi 1-1-1,Tsukuba,Ibaraki,305-8567,Japan;[2]State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,Beijing,100029,China;[3]Earthquake Monitoring Centre,Sichuan Earthquake Agency,Chengdu,610041,China

出　　处：《Earthquake Research Advances》索引2021年第1卷第1期,共6页

基　　金：We thank editor board members for the encouragement and recom-mendation,and thank the two anonymous reviewers for the detailed constructive comments.Jinrong Su acknowledge the support of China National Key R&D Project(2018YFC1504501-02). 摘　　要：On February 3rd,2020,an isolated MS5.1 earthquake occurred in the northern section of the Longquanshan fault zone.This study aims at defining the geometry of seismogenic structures of this earthquake.In detail,centroid moment tensor inversion results show that the earthquake is characterized by a focal depth of 3.8 km with no corresponding surface faults.The strike/dip/rake angles for the two nodal planes are 205°/54°/96°and 15°/36°/82°,respectively.With the analyses of coseismic deformation of the surface obtained from InSAR measurements,together with the information of relocated hypocenters for a small number of aftershocks,it is concluded that a northwest-dipping nodal plane corresponds well to the source fault.The fault is suggested to have a length of about 2.8 km and a depth range of 2-5 km,and the centroid of the earthquake is located at 104.48°E and 30.71°N.Furthermore,multiple pieces of evidence indicate that this earthquake is partly driven by the overpressure effect associated with the adjacent natural gas packets,which is similar to several other moderate natural earthquakes in Sichuan Basin. 关键词：Isolated earthquake InSAR Deep fluid Fault valve Sichuan Basin

相关文献

参考文献（25）
引证文献（2）
耦合文献（94）

参考文献(25)

引证文献(2)

耦合文献(94)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Fluid-driven seismicity in relatively stable continental regions:Insights from the February 3^(rd),2020 M_(S)5.1 Qingbaijiang isolated earthquake

参考文献(25)

引证文献(2)

耦合文献(94)

用户提示