地球与行星物理论评（中英文）2024，Vol.55Issue(4)：399-415,17.DOI:10.19975/j.dqyxx.2023-041
浅源地震动态触发综述及四川威远地区案例分析
Review and case analysis of dynamic triggering of shallow earthquake in the Weiyuan area,Sichuan Province
摘要
Abstract
Dynamic triggering refers to the phenomenon of teleseismic waves propagating to some areas in a near-critical stress state,thus triggering earthquakes.Shallow earthquakes are the type of earthquakes that are most commonly triggered.Researching the dynamic triggering of shallow earthquakes can enhance understanding of the seismogenic mechanism and produce additional information about the state of shallow faults,which has great im-portance for earthquake prevention and disaster reduction.This article reviews possible mechanisms and detection methods of dynamic triggering,focusing on several case studies of triggered shallow earthquakes in different tec-tonic settings.Furthermore,by using continuous recordings from a dense seismic array in the Weiyuan area of Sichuan Province from November 2015 to November 2016,we investigated whether seismic activities in the shale gas extraction areas were influenced by the dynamic triggering of teleseismic waves.The results revealed that the seismicity in the area increased significantly within 12 hours of the MW7.4 Tajikistan earthquake on December 7,2015,and exhibited characteristics of dynamic triggering.However,after carefully analyzing the temporal and spa-tial distribution of the earthquakes in the Weiyuan area following the Tajikistan earthquake,we found that the mi-gration of the enhanced seismic activities exhibited characteristics of fluid diffusion,suggesting that these shallow earthquakes were more likely induced by industrial injection.关键词
动态触发/库仑失效/流体迁移/浅源地震Key words
dynamic triggering/Coulomb failure/fluid migration/shallow earthquake分类
天文与地球科学引用本文复制引用
江子豪,储日升,盛敏汉..浅源地震动态触发综述及四川威远地区案例分析[J].地球与行星物理论评（中英文）,2024,55(4):399-415,17.基金项目
国家自然科学基金资助项目(42325401,U20A2095,42374077,42004043) （42325401,U20A2095,42374077,42004043）
湖北省科技创新人才专项(2022EJD015)Supported by the National Natural Science Foundation of China(Grant Nos.42325401,U20A2095,42374077,42004043),and the Hubei Province Science and Technology Innovation Talent Special Project(Grant No.2022EJD015) （2022EJD015）
