大地测量与地球动力学2025，Vol.45Issue(6)：580-586,7.DOI:10.14075/j.jgg.2024.06.307
2022-07-03阿合奇Ms5.2地震:一次发生在柯坪推覆构造的超浅源、逆冲型破裂事件
The July 3,2022 Aheqi Ms5.2 Earthquake:An Ultra-Shallow,Reverse-Type Rupture Event Occurred in the Keping Thrust Tectonic
摘要
Abstract
Based on the waveform data and seismic phase reports from the Xinjiang regional digital seismic network,the focal mechanism solution of Aheqi Ms5.2 earthquake and some aftershocks are inverted using the CAP method.Meanwhile,the double-difference localization method is used to relo-cate the earthquake and its sequence.The results show that the strike,slip and rake are 259°,44°,and 90° for nodal plane Ⅰ,and those are 79°,46°,90° for nodal plane Ⅱ,respectively,with a moment magnitude of Mw4.76,and a depth of moment center of 5 km,which suggests that the earthquake is a reverse-type event.The relocation results show that Aheqi Ms5.2 earthquake sequence spreads line-arly in the NW direction and is perpendicular to the fault strike,and the depth is concentrated in 3-6 km.Based on this,we comprehensively analyze the historical seismic mechanism solution,geolog-ical and tectonic background,and conclude that the Suogedangtawu fault,which is located at the root of Keping thrust tectonic,is the seismogenic structure of this earthquake.This study can provide a certain understanding of the seismic mechanism of strong earthquakes in the contact zone between south Tianshan orogenic belt and Keping thrust tectonic,and provide reference for regional earth-quake trend analysis.关键词
阿合奇Ms5.2地震/索格当他乌断裂/震源机制/发震构造Key words
Aheqi Ms5.2 earthquake/Suogedangtawu fault/focal mechanism/seismogenic structure分类
天文与地球科学引用本文复制引用
邓明文,李金..2022-07-03阿合奇Ms5.2地震:一次发生在柯坪推覆构造的超浅源、逆冲型破裂事件[J].大地测量与地球动力学,2025,45(6):580-586,7.基金项目
新疆维吾尔自治区重点研发计划(2024B03018-3) （2024B03018-3）
中国地震局地震科技星火计划(XH23046YA) （XH23046YA）
中国地震局"三结合"课题(CEA-SJH-202501069) （CEA-SJH-202501069）
中国地震局震情跟踪课题(CEA-ZQGZ-202502017) （CEA-ZQGZ-202502017）
新疆地震科学基金(202414). Key Research and Development Program of Xinjiang Uygur Autonomous Region,No.2024B03018-3 （202414）
The Spark Program of Earthquake Technology of CEA,No.XH23046YA （）
Combination Project with Monitoring,Prediction and Scientific Research of Earthquake Technology,CEA,No.CEA-SJH-202501069 （）
Seismic Regime Tracking Project of CEA,No.CEA-ZQGZ-202502017 （）
Earthquake Science Foundation of Xinjiang,No.202414. （）
