人工爆破检验区域地震台网地震定位精度  

Testing earthquake location accuracy of regional seismic network by artificial explosion

作　　者：黄文辉[1,2,3] 吕作勇[1,2,3] 康英[1,2,3] 叶春明[1,2,3] Huang Wenhui;Lv Zuoyong;Kang Ying;Ye Chunming(Earthquake Administration of Guangdong Province, Guangzhou 510070, China;Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology, China Earthquake Administration, Guangzhou 510070, China;Key Laboratory of Guangdong province Earthquake Early Warning and Safety Diagnosis of Major Projects,Guangzhou 510070, China)

机构地区：[1]广东省地震局,中国广州510070 [2]中国地震局地震监测与减灾技术重点实验室,中国广州510070 [3]广东省地震预警与重大工程安全诊断重点实验室,中国广州510070

出　　处：《地震地磁观测与研究》2017年第2期77-80,共4页Seismological and Geomagnetic Observation and Research

基　　金：地震行业科研专项"全国统一编目系统及其相关体系研制"(项目编号:201308008)

摘　　要：利用广东地震台网记录的2015年6月珠江口海陆联合地震构造探测项目人工爆破资料,采用MSDP地震分析软件提供的3种常用地震定位方法,对6次人工爆破事件进行分析,将定位结果与已知爆破位置进行对比,验证地震定位精度。结果表明,当地震定位数据满足台网分布方位均匀度ΔU≤0.35、次空隙角(S_(gap))≤160°时,广东地区地震震中定位精度优于3 km。In order to testing the accuracy of earthquake location,we analyzed6explosion events by three commonly earthquake location methods provided by MSDP earthquake analysis software.The6explosion events were recorded by Guangdong seismic network and exploded by onshore-offshore seismic exploration on Zhujiangkou area in June2015.Through comparing and analyzing thelocation results,it shows that when the data satisfies azimuth distribution uniformity of the networkΔU≤0.35,second azimuth gap(Sgap)≤160°,the location accuracy of epicenter is within3km in Guangdong area.

关 键 词：人工爆破 地震定位精度 广东地震台网 

分 类 号：P315.78[天文地球—地震学]