内蒙古中西部地区震源参数研究  

Study on earthquake source parameters in Mid-west region of Inner Mongolia Autonomous Region

作　　者：李彬[1] 张帆[1] 刘芳[1] 郝亮 金海霞 Li Bin;Zhang Fan;Liu Fang;Hao Liang;Jin Haixia(Earthquake Agency of Inner Mongolia Autonomous Region,Hohhot 010051,China)

机构地区：[1]内蒙古自治区地震局,中国呼和浩特010010

出　　处：《地震地磁观测与研究》2018年第3期16-21,共6页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局地震科技星火项目(项目编号:XH15008)

摘　　要：选取内蒙古测震台网2009—2016年内蒙古中西部M_L≥2.8中小地震波形记录,采用多台联合反演方法,计算该区中小地震震源谱参数,获得地震矩M_0、矩震级M_W、应力降Δσ和震源尺度r,利用线性回归,分析近震震级M_L、地震矩M_0、矩震级M_W、应力降Δσ和震源尺度r之间的关系。结果表明,各参数之间存在一定线性关系,内蒙古中西部地区应力降模型为增加应力降模型(ISD)。Selecting the seismic waveform records of ML ≥ 2.8 earthquakes in the central and western part of Inner Mongolia Autonomous Region from 2009 to 2016, the focal spectrum parameters of the small and medium earthquakes in this area are calculated by multiple joint inversion methods. Seismic moment M0, moment MW, stress drop σ and focal scale r are obtained. By linear regression, the relationships between near earthquake magnitude ML, moment M0, moment magnitude MW, stress drop σ and focal scale r are analyzed. The results show that there is a linear relationship among the parameters, and the stress drop model in the central and western regions of Inner Mongolia is an increasing stress drop model.

关 键 词：内蒙古中西部地区 中小地震 场地响应 震源参数 

分 类 号：P315.33[天文地球—地震学]