新疆地区近震震级与面波震级经验关系初步研究

PRELIMINARY STUDY ON EMPIRICAL RELATIONSHIP BETWEEN MAGNITUDE OF NEAR EARTHQUAKES AND MAGNITUDE OF SURFACE WAVES IN XINJIANG

利用线性回归方法对2010~2018年M_(S)≥3.5的500个地震事件为研究对象,重新量取计算近震震级M_L和面波震级M_(S),并对新疆地区分区域进行对比分析,得出不同区域近震震级与面波震级之间的关系,为定量研究地震震级奠定基础。同时,将新疆台网和中国地震台网都存在的震级数据进行对比,结果表明:新疆台网和中国地震台网测定的M_L震级差值主要分布在-0.2~0.1,M_(S)震级差值主要分布在-0.4~0.2。

Taking 500 seismic events with M_(S)≥3.5 from 2010 to 2018 as the research object,the near earthquake magnitude M_L and surface wave magnitude M_(S) are remeasured and calculated by using the linear regression method,and the relationship between the near earthquake magnitude and the surface wave magnitude in different regions is obtained by comparing and analyzing the subregions of Xinjiang,which lays the foundation for the quantitative study of earthquake magnitude.At the same time,comparing the magnitude data of Xinjiang seismic network and China seismic network,the results show that M_L difference measured by Xinjiang seismic network and China seismic network is mainly distributed in-0.2~0.1,and M_(S) difference is mainly distributed in-0.4~0.2.