内蒙古阿拉善地区几次中等强度地震震源深度测定  

Focal depth determination of several moderate earthquakes in Alxa region,Inner Mongolia Autonomous Region

作　　者：张帆[1] 刘永梅[1] 郝美仙[1] 韩晓明[1] 李娟[1] 赵星[1] 候迪[1] Zhang Fan;Liu Yongmei;Hao Meixian;Han Xiaoming;Li Juan;Zhao Xing;Hou Di(Earthquake Administration of Inner Mongolia Autonomous Region, Hohhot 010051, China)

机构地区：[1]内蒙古自治区地震局,中国呼和浩特010051

出　　处：《地震地磁观测与研究》2017年第2期38-45,共8页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局监测;预测;科研三结合课题(项目编号:160501);中国地震局地震科技星火计划(项目编号:XH14012Y);测震台网青年骨干培养专项(项目编号:20140306)

摘　　要：震源深度对发震构造研究具有重要意义,内蒙古阿拉善地区近年来地震活动频繁,发生数次中强地震和大量中小地震。选取阿拉善地区8个中等强度地震,使用Pn、Pg联合测定深度方法(PTD)、sPn和Pn走时差方法和CAP方法测定震源深度,3种方法计算结果的一致,重新测定的震源深度范围为(18±7)km。Focal depth is significant for seismogenic tectonic research.Earthquake activity is frequent in Inner Mongolia Alax area in recent years,with several moderate earthquakes occurred.In this article,we determined the focal depth of eight earthquakes,using PTD method,sPn-Pn method and CAP method.Results of the three methods were in accordance,with depth range of(18±7)km.

关 键 词：震源深度 走时差 PTD方法 CAP方法 SPN震相 

分 类 号：P315.33[天文地球—地震学]