摘要
介绍2020年1月16日库车M_(S)5.6地震参数、地震序列特征、震源机制解,分析库车M_(S)5.6地震前地震学异常。结果表明:库车M_(S)5.6地震序列为主震-余震型,震源断错性质为走滑型,序列衰减较快,余震主要发生在震后6 d,序列空间上呈NS方向展布。序列参数和应力降计算结果显示,库车M_(S)5.6地震的预测最大余震M_(L)4.1与实际最大余震M_(L)3.9接近,表明最大余震已经发生。库车M_(S)5.6地震前存在地震平静、地震增强、异常增强区、地震窗和地震条带等地震活动性异常。
Introduced basic parameters,earthquake sequence characteristics and focal mechanism solution of Kuche M_(S)5.6 earthquake on January 16,2020.Analysis of seismic activity around the epicenter showed that seismic sequence with M_(S)5.6 belonged to main shock-aftershock,while focal dislocation property was strike slip type.The sequence decayed rapidly,major aftershocks occurred six days after the earthquake,and the sequence was in the direction of NS.The calculation results of sequence parameters and stress showed that the predicted maximum aftershock M_(L)4.1 was close to the maximum aftershock M_(L)3.9 of Kuche M_(S)5.6 earthquake,indicating that the largest aftershock has occurred.And there were anomalies such as seismic quiescence with M_(S)4.0,moderate earthquake enhancement and anomaly enhancement area,seismic window and seismic belt of M_(S)3.0 before Kuche M_(S)5.6 earthquake.
作者
魏芸芸
刘萍
聂晓红
高荣
王琼
WEI Yun-yun;LIU Ping;NIE Xiao-hong;GAO Rong;WANG Qiong(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China)
出处
《内陆地震》
2021年第4期326-336,共11页
Inland Earthquake
基金
新疆地震科学基金(201901)
中国地震局震情跟踪定向工作任务(2021010510)
国家自然科学基金(41674063)
国家重点研发计划2018YFC1503200。
