河源地区小震群的检测与定位  

Detection and Location of a Small Earthquake Sequence in Heyuan

作　　者：马晓静[1,2,3] 吕作勇 龚萱[1,2,3] 姜喜姣 MA Xiaojing;LYU Zuoyong;GONG Xuan;JIANG Xijiao(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(筹),广州510070

出　　处：《华南地震》2018年第1期39-46,共8页South China Journal of Seismology

基　　金：波形互相关技术及"重复地震"方法在广东地区的初步应用(中国地震局测震台网青年骨干培养专项:20140316)

摘　　要：2014年6月16日至20日,广东河源发生了一系列微震事件。以广东台网观测报告中M_L1.0级以上的61个事件波形为模板,利用匹配定位方法在连续波形中搜索检测地震。结果检测到996个地震,为模板事件的16倍,比地震目录给出的469个事件多一倍,检测震级范围为ML-0.5~1.3,并将地震目录的完整性震级从M_L0.1降到了-0.2,显著丰富了地震目录的完整度。对检测到的地震事件,进一步通过双差精定位,更好的揭示了该震群的展布形态和发震构造。From June 16 thto 20 thin 2014, a series of small earthquakes occurred in Heyuan, Guangdong province. Utilizing 61 events with ML≥1.0 in the Seismic Catalog of Guangdong Province as templates, the paper searched for earthquakes in the continuous waveforms by using the MatchLocate method. The 996 events were detected with a magnitude range ML-0.5-1.3, which are 16 times of the template events and 2 times of the catalog events. The minimum complete magnitude is lowered from ML0.1 to-0.2, and the seismic catalog is significantly enriched. After relocation using the Hypo DD method, the detected events displayed the distribution of earthquake swarm better.

关 键 词：波形匹配 地震检测 连续波形 地震目录 双差定位 河源地震 

分 类 号：P315.2[天文地球—地震学]