华南地震

广西北流—广东化州5.2级地震及前震的矩震级测定

洪玉清¹^,²^,³,杨选¹^,²^,³,龚萱¹^,²^,³,马晓静¹^,²^,³,蒋策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）

The Moment Magnitudes Measurement of Beiliu-Huazhou M_S5.2 Earthquake and Its Foreshock in the Junction of Guangxi and Guangdong

HONG Yuqing¹^,²^,³, YANG Xuan¹^,²^,³, GONG Xuan¹^,²^,³, MA Xiaojing¹^,²^,³, JIANG Ce¹^,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 Earthquake Early Warning and Safety Diagnosis of Major Project, Guangzhou 510070, China）

Keywords： Overlap earthquake;Moment magnitude;Seismic wave;Waveform fitting

DOI: 10.13512/j.hndz.2020.02.04

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参考文献

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 12th,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.