广西北流-广东化州5.2级地震及前震的矩震级测定  

The Moment Magnitudes Measurement of Beiliu-Huazhou MS 5.2 Earthquake and Its Foreshock in the Junction of Guangxi and Guangdong

作　　者：洪玉清 杨选[1,2,3] 龚萱 马晓静 蒋策[1,2,3] HONG Yuqing;YANG Xuan;GONG Xuan;MA Xiaojing;JIANG Ce(Guangdong Earthquake Agency,Guangzhou 510070,China;Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology,CEA,Guangzhou 510070,China;Key Laboratory of Earthquake Early Warning and Safety Diagnosis of Major Project,Guangzhou 510070,China)

机构地区：[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

出　　处：《华南地震》2020年第2期26-31,共6页South China Journal of Seismology

基　　金：广东省防震减灾科技协同创新中心重点任务“地震预警关键技术研究及系统研制”(2018B020207011)。

摘　　要：利用理论波形与实际波形拟合方法,测定了发生于2019年10月12日22时55分26秒和24秒的广西北流-广东化州MS5.2级地震(主震)及其ML4.2级前震的矩震级,得到主震矩震级为MW 4.7、前震矩震级为MW 4.2。On October 12^th,2019,ML4.2 and MS5.2 earthquakes occurred successively in Beiliu,Guangxi and Huazhou,Guangzdong at 22:55:24 and 22:55:26.In this paper,the fitting approach of theoretical waveform and actual waveform is employed for measuring the moment magnitudes of ML4.2 and MS5.2 earthquakes.Finally,the moment magnitudes of main shock and foreshock are MW 4.7 and MW 4.2.

关 键 词：重叠地震 矩震级 地震波 波形拟合 

分 类 号：P315.7[天文地球—地震学]