华南地震

同源双震的速报处理——以广西北流—广东化州M_S5.2级地震为例

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）

Earthquake Quick Report Processing of Homologous Double Events: A Case Study on Beiliu-Huazhou M_S5.2 Earthquake Sequence in the Junction of Guangxi and Guangdong

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： Homologous double events;Quick report analysis; Seismic phase characteristics

DOI: 10.13512/j.hndz.2020.02.010

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2019年10月12日广西北流—广东化州发生MS5.2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。

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.