使用中国地震台网资料快速测定中强地震矩震级  

Rapid calculation of the moment magnitude of moderate and strong earthquakes by using the data from China Seismic Network

作　　者：陈宏峰[1] 袁菲[2] 徐志国[3] 殷翔 苗春兰[1] 邹立晔[1] 马延路[1] 

机构地区：[1]中国地震台网中心,中国北京100045 [2]河北行政学院,中国石家庄050031 [3]国家海洋环境预报中心,中国北京100081 [4]南京地震台,中国江苏210000

出　　处：《地震地磁观测与研究》2014年第5期51-57,共7页Seismological and Geomagnetic Observation and Research

基　　金：地震行业科研专项(200708024)

摘　　要：利用中国地震台网数字地震资料,选取国内M_S≥5.3地震波形数据,采用长周期波形拟合方法,快速计算2008年至今86个中强震的标量地震矩M_0和矩震级M_W,并将M_W与GCMT的测定结果及中国地震台网中心测定的面波震级M_S进行对比。结果表明:矩震级与GCMT测定一致,与中国地震台网中心测定的面波震级关系为M_W=0.86M_S+0.63。The scalar seismic moment Mo and moment magnitude Mw of the 86 earthquakes with Ms 5.3 since 2008 in China are calculated rapidly, by long-period fitting with the digital data from China Seismograph Network. Mw in this paper are compared with the those from GCMT and with the surface wave magnitude Ms from CENC. It is shown that the moment magnitudes we calculated are in accordance with measurements from GCMT and the relation- ship between our Mw and CENC＇s Ms is Mw= 0. 86Ms＋0. 63.

关 键 词：中强地震 快速CMT 震源机制 矩震级 面波震级 关系 

分 类 号：P315.32[天文地球—地震学]