基于双差定位方法的内蒙古中西部地区地震精确定位

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.

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

In view of the earthquake location deviation of the current seismic network, this paper uses the double-difference earthquake location method to relocate 4 410 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.