Slip rate and interseismic coupling along the Moxi-Shimian segment of the Xianshuihe fault, Eastern Qinghai-Xizang Plateau

作     者：Xinyu Zhao Gang Liu Zhaosheng Nie Wei Xiong Wei Chen Mu Lin Dijin Wang Qi Li Jiansheng Yu Dongzhen Wang Pengfei Yu Xinyu Zhao;Gang Liu;Zhaosheng Nie;Wei Xiong;Wei Chen;Mu Lin;Dijin Wang;Qi Li;Jiansheng Yu;Dongzhen Wang;Pengfei Yu

作者机构：Institute of SeismologyChina Earthquake AdministrationWuhan 430071China Key Laboratory of Earthquake Geodesy.China Earthquake AdministrationWuhan 430071China State Key Laboratory of Geodesy and Earth's DynamicsInnovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430077China 

出 版 物：《Geodesy and Geodynamics》 (大地测量与地球动力学（英文版）)

年 卷 期：2024年第15卷第4期

页      面：338-351页

核心收录：

学科分类：081802[工学-地球探测与信息技术] 070801[理学-固体地球物理学] 07[理学] 08[工学] 081105[工学-导航、制导与控制] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0811[工学-控制科学与工程] 

基　　金：supported by Open Fund of Wuhan,Gravitation and Solid Earth Tides,National Observation and Research Station(WHYWZ202301) Scientific Research Fund from Institute of Seismology,CEA and National Institute of Natural Hazards,Ministry of Emergency Management of China grants IS202216316 and IS202226318 State Key Laboratory of Geodesy and Earth's Dynamics,Innovation Academy for Precision Measurement Science and Technology,CAS SKLGED2023-2-5 Science for Earthquake Resilience grant XH20038,and NSFC grant 42074015 

主　　题：Moxi-Shimian segment of Xianshuihe fault Luding earthquake Global positioning system Interseismic kinematic parameters 

摘      要：On September 5,2022,the Luding M6.8 earthquake occurred in the Moxi-Shimian segment of the Xianshuihe fault,coinciding with the historical ruptured zone of the 1786 Moxi *** seis-mogenic environment provides a foundation for comprehending the mechanism of the earthquake and its future *** the Moxi-Shimian segment,we establish a series of near-field Global Navigation Satellite Systems(GNsS)stations to enhance the spatial resolution of observational data for the inversion of the interseismic kinematic *** this study,with an elastic screw dislocation model con-strained by GNsS observations,the slip rate of the Moxi-Shimian segment is estimated to be 10.9±1.0 mm/yr,while the locking depth is 15.7±6.2 ***,we utilize a block-dislocation model to invert the interseismic fault coupling along the Kangding-Moxi-Shimian *** result indicates a gradual deepening of the locking depth along the section from Kangding to *** coseismic rupture of the 2022 event occurred within the high coupling regions in the Kangding-Moxi-Shimian segment,which indicates that the rupture kinematics in this event might be controlled by the interseismic *** seismic moment accumulated within the ruptured zone of the Luding earthquake since 1786 ranges in[1.42-3.40]×10^(19) N-m,which is significantly greater than the seismic moment released during the 2022 *** a result,we infer that the Luding earthquake released only a portion of the accumulated energy within the original rupture zone since 1786,indicating that the 2022 event has not caused a complete rupture in the Moxi-Shimian ***,there remains a substantial seismic hazard in this area.