新疆中强地震矩震级的初步研究  

PRELIMINARY STUDY ON SEISMIC MOMENT MAGNITUDE OF MODERATE STRONG EARTHQUAKES IN XINJIANG

作　　者：冉慧敏[1] 金花[1] 李艳永[1] RAN Hui-min;JIN Hua;LI Yan-yong(Earthquake Agency of Xinjiang Uygur Autonomous Region,Urumqi 830011,Xinjiang,China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011

出　　处：《内陆地震》2023年第3期239-246,共8页Inland Earthquake

基　　金：中国地震局监测、预报、科研三结合课题(3JH-202302079).

摘　　要：整理新疆地震台网2010年1月至2023年2月M_(L)≥4.0的623个中强地震波形数据,利用CAP方法反演得到相应矩震级,使用回归分析得到矩震级M_(W)和近震震级M_(L)之间的关系式为M_(W)=0.668+0.789M_(L),相关系数为0.841,标准差0.2724。回归的标准化残差近似正态分布,矩震级M_(W)和近震震级M_(L)呈正相关关系,表明在新疆地震台网日常工作中使用CAP方法测定中强地震的矩震级是可行的。The 623 moderate strong earthquake waveform data withM_(L)≥4.0 from January 2010 to February 2023 of Xinjiang Seismic Network were sorted out,and the corresponding moment magnitude scale was obtained by using the CAP method.Using regression analysis,the relationship between the Moment magnitude scale and the local earthquake magnitude wasM_(W)=0.668+0.789M_(L),with correlation coefficient of 0.841 and standard deviation of 0.2724.The standardized residual of regression was close to normal distribution,and moment magnitude scale was positively correlated with the local earthquake magnitude,which indicated that it was feasible to take CAP method to determine moment magnitude scale of moderate strong earthquakes in the daily work of Xinjiang Seismic Network.

关 键 词：中强地震 近震震级 矩震级 CAP方法 

分 类 号：P315.9[天文地球—地震学]