国家地震烈度速报江苏子系统震源机制解产出分析  

Analysis of Focal Mechanism Solutions Output of the Jiangsu Subsystem in the National Earthquake Intensity Rapid Reporting System

作　　者：杜航[1] 郑江蓉[1] 江昊琳[1] 王俊[1] 倪昊琦 李子烨 DU Hang;ZHENG Jiangrong;JIANG Haoin;WANG Jun;NI Haoqi;LI Ziye(Jiangsu Earthquake Agency,Nanjing 210014,China)

机构地区：[1]江苏省地震局,江苏南京210014

出　　处：《防灾减灾工程学报》2024年第3期730-734,共5页Journal of Disaster Prevention and Mitigation Engineering

基　　金：中国地震局监测、预报、科研三结合课题(3JH-202401014);江苏省地震局青年科学基金(202403);地震科技星火项目(XH23015A);江苏省地震局科技创新团队(202201,202204)资助。

摘　　要：国家地震烈度速报与预警系统江苏子系统震源机制解参数速报集成了TDMT_INV方法,可直接读取震相进行震源机制解反演计算并产出。为验证该方法获得震源机制解的准确性,选取2024年1月17日江苏东台3.0级地震和2023年12月7日江苏赣榆海域3.8级地震这2次3级以上地震,采用TDMT_INV、CAP和FOCMEC方法计算其震源机制解,分析三种方法所得结果差异。东台3.0级地震位于江苏预警站网网内,三种方法都可获得较为稳定的震源机制解结果;赣榆海域3.8级地震位于江苏预警站网网外,TDMT_INV方法仍可获得较为稳定的震源机制解结果。The Jiangsu sub-project of the National Earthquake Intensity Quick Reporting and Early Warning System integrates the TDMT_INV method for rapid reporting of source mechanism parame-ters,enabling direct reading of seismic phases for inversion calculation and production of source mech-anism solutions.To verify the accuracy of this method,this paper selected two earthquakes of magni-tudes 3 or above:the 3.0-magnitude earthquake in Dongtai,Jiangsu on January 17,2024,and the 3.8-magnitude earthquake in Ganyu Sea,Jiangsu on December 7,2023.The TDMT_INV,CAP,and FOCMEC methods were utilized to calculate their source mechanism solutions and to analyze the dif-ferences in results obtained from the three methods.The Donghai 3.0-magnitude earthquake,located within the Jiangsu early warning network,produced relatively stable source mechanism solutions across all three methods.Despite the Ganyu Sea 3.8-magnitude earthquake occurring outside the Jiang-su early warning network,the TDMT_INV method still produced relatively stable source mechanism solutions.

关 键 词：震源机制解 DMT_INV方法 CAP方法 FOCMEC方法 

分 类 号：P315.3[天文地球—地震学]