地震地磁观测与研究2025，Vol.46Issue(3)：24-29,6.DOI:10.3969/j.issn.1003-3246.2025.03.003
基于有限断层模型的2022年马尔康MS 6.0震群序列主震破裂反演
Inversion of the rupture process for the 2022 MS 6.0 earthquake swarm in the Barkam based on a finite fault model
摘要
Abstract
On June 10,2022,an MS 6.0 earthquake swarm occurred in Barkam,Aba Prefecture,Sichuan Province.Based on the tectonic geological background of the seismogenic area,we constructeda finite-fault model and utilized regional broadband seismic data to invert the source rupture process of the MS 6.0 earthquake via the apparent source-time-function method.This yielded the source time function,rupture kinematics,and slip distribution characteristics,while systematically investigating the influence of the geometric parameters of the fault model on the inversion results.The inversion results show that the moment magnitude of the main shockis MW 5.85 and the maximum slip is 0.19 m.The rupture depth is concentrated between 5 and 12 km,primarily involving unilateral rupture along the strike from the hypocenter.The entire rupture process lasted～8 s,with the majority of slip occurring between 3-5 s.The rupture velocity peaked at 2.5 km/s.关键词
马尔康震群/有限断层模型/破裂过程Key words
Barkam earthquake swarm/finite fault model/rupture process引用本文复制引用
吴俊柯,左亚兰,杜忠娅,董立杰..基于有限断层模型的2022年马尔康MS 6.0震群序列主震破裂反演[J].地震地磁观测与研究,2025,46(3):24-29,6.基金项目
中国地震局地震监测、预报、科研三结合课题(项目编号:3JH-202401042) （项目编号:3JH-202401042）
