2007年顺昌M_L 4.9地震余震的剪切波分裂现象  

Shear-wave splitting in the aftershock region of the 2007 Shunchang M_L 4. 9 earthquake

作　　者：倪晓寅[1] 陈光[1] 吴声伟 叶晓明[1] 

机构地区：[1]福建省地震局,中国福州350003 [2]泉州地震台,中国福建362000

出　　处：《地震地磁观测与研究》2009年第6期1-5,共5页Seismological and Geomagnetic Observation and Research

基　　金：福建省地震局科研项目基金"顺昌余震S波分裂研究"

摘　　要：利用福建省地震局在顺昌ML 4.9地震后布设的流动台网记录到的顺昌地震余震波形资料,应用SAM剪切波分裂分析方法,计算并得到顺昌余震的快波偏振方向和慢波时间延迟。结果表明,顺昌地区的快波偏振方向为北东向,与顺昌地区断裂带走向一致。Using the seismic data recorded by near source digital seismic network installed by Earth- quake Administration of Fujian Province after the Shunchang ML 4. 9 earthquake, we measured the shear-wave splitting parameters of the afte/shock recordings by the systematic analysis method （SAM） of shear-wave splitting. The results show that the fast shear-wave polarization directions is NE direction, consistent with the strike of the faults in Shunchang region.

关 键 词：顺昌地震 剪切波分裂 剪切波分裂SAM分析法 快波偏振方向 

分 类 号：P315[天文地球—地震学]