基于双差定位方法的内蒙古中西部地区地震精确定位  

The accurate seismic location based on the double-difference method in the middle and western region of Inner Mongolia

作　　者：郭伟 刘甜甜 范玲玲 李贵明 赵策 陈浩 GUO Wei;LIU Tiantian;FAN Lingling;LI Guiming;ZHAO Ce;CHEN Hao(Wujiahe Seismic Station,Earthquake Agency of Inner Mongolia Autonomous Region,Wujiahe 015331,China;Institute of Earthquake Forecasting,China Earthquake Administration,Beijing 100036,China;Institute of Geology,China Earthquake Administration,Beijing 100029,China)

机构地区：[1]乌加河地震台,中国内蒙古自治区015331 [2]中国地震局地震预测研究所,中国北京100036 [3]中国地震局地质研究所,中国北京100029

出　　处：《地震地磁观测与研究》2021年第1期26-34,共9页Seismological and Geomagnetic Observation and Research

基　　金：内蒙古自治区地震局局长基金课题(项目编号:2019JC15)。

摘　　要：针对测震台网定位存在偏差的问题,采用双差定位方法,对2008—2019年9月内蒙古测震台网及周边台站记录的内蒙古中西部地区4410个地震事件进行重新定位。研究表明,利用双差定位方法重新定位后地震分布更集中,更符合内蒙古中西部地区的地质构造特征,定位精度显著提高。In view of the earthquake location deviation of the current seismic network,this paper uses the double-difference earthquake location method to relocate 4410 earthquakes recorded by the Inner Mongolia seismic network and its surrounding stations from January 2008 to September 2019.The study shows that the earthquake distribution relocated by the double-difference method is more concentrated,more consistent with the geological structure characteristics of the western region of Inner Mongolia,significantly improving the location accuracy,and providing a more accurate research basis for improving the monitoring capability of Inner Mongolia seismic network.

关 键 词：双差定位方法 内蒙古中西部地区 地震精确定位 

分 类 号：P315[天文地球—地震学]