同源双震的速报处理 —— 以广西北流 — 广东化州 MS5.2 级地震为例-华南地震

文章信息/Info

Title:: Earthquake Quick Report Processing of Homologous Double Events: A Case Study on Beiliu-Huazhou MS 5.2 Earthquake Sequence in the Junction of Guangxi and Guangdong

作者:: 吴国瑞 1; 2; 3; 康英 1; 2; 3; 马晓静 1; 2; 3; 洪玉清 1; 2; 3; 杨选 1; 2; 3; 姜喜姣 1; 2; 3; （ 1. 广东省地震局 , 广州 510070； 2. 中国地震局地震监测与减灾技术重点实验室 , 广州 510070；3. 广东省地震预警与重大工程安全诊断重点实验室 , 广州 510070）

Author(s):: WU Guorui1; 2; 3 ; KANG Ying1; 2; 3; MA Xiaojing1; 2; 3; HONG Yuqing1; 2; 3; YANG Xuan1; 2; 3; JIANG Xijiao1; 2; 3; (1.Guangdong Earthquake Agency,Guangzhou 510070,China; 2. Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology,CEA,Guangzhou 510070,China ; 3.Key Laboratory of Guangdong Province Earthquake Early Warning and Safety Diagnosis of Major Projects,Guangzhou 510070,China)

Keywords:: Earthquake Quick Report Processing of Homologous Double Events: A Case Study on Beiliu-Huazhou MS 5.2 Earthquake Sequence in the Junction of Guangxi and Guangdong

摘要:: 2019 年 10 月 12 日广西北流 — 广东化州发生 MS 5.2 级地震 , 广东省地震台网中心值班员在速报过程中 , 发现为同源双震事件且后面的地震震级较大 , 其后最大的余震也是双震。两次都为典型的同源双震类型 ,震中位置处于广东、广西交界。基于此次地震的特殊性 , 对同源双震速报情况进行了回顾总结 , 分析了其地震特征和定位精度 , 并给出同源双震处理的相关建议。

Abstract:: On October 12th ,2019,an MS5.2 earthquake occurred in the junction of Guangdong Huazhou and Guangxi Beiliu. During the rapid report,the staff on duty at the center of the Guangdong Seismic Network found that the earthquakes were homologous double events with larger subsequent earthquake,and the largest aftershocks were also homologous double events. Both are typical types of homologous double events,and the epicenter of those earthquakes lie in the junction of Guangxi and Guangdong. Own to the particularity of the four earthquakes,the paper reviewed and summarized the earthquake quick report of two homologous double events ,and analyzed the seismic characteristics and earthquake location accuracy. At last,the paper gave some suggestions on the process of homologous double events.