山西地区非弹性衰减系数、场地响应和几种震源参数的研究

英文篇名：STUDY ON INELASTIC ATTENUATION COEFFICIENT,SITE RESPONSE AND SOURCE PARAMETERS IN SHANXI REGION
中文刊名：地震学报
英文刊名：Acta Seismologica Sinica
作者：啜永清 ; 苏燕 ; 贾建喜 ; 黄金刚
英文作者：Chuo Yongqing Su Yan Jia Jianxi Huang Jingang (Earthquake Administration of Shanxi Province ; Taiyuan 030002 ; China)
中文关键词：山西地区 ; Q值 ; 场地响应 ; 震源参数
英文关键词：Shanxi region ; Q value ; site response ; source parameter
出版日期：2004-08-15
机构：山西省地震局,山西省地震局,山西省地震局,山西省地震局中国太原030002 ,中国太原030002 ,中国太原030002 ,中国太原030002
年：2004
期：04
出版单位：地震学报

摘要

根据山西数字地震台网 14个地震台的 310条波形资料 ,研究了山西地区的非弹性衰减系数 ;采用Atkinson和Moya方法 ,研究了各台的场地响应和几种震源参数 ,并对这两种方法的反演结果进行了对比分析 .得到山西地区非弹性衰减Q值随频率f的关系为Q(f) =32 3.2f0 .50 6 ;得到的 14个台站的场地响应均没有显示出明显的放大效应 ,这与山西台站均处于岩石地基相符 ;得到了拐角频率与地震矩、地震矩与应力降、震源半径与应力降之间存在依赖关系 .
Based on 310 horizontal-component digital seismograms recorded at 14 seismic stations in Shanxi Digital Seismograph Network,the of inelastic attenuation coefficient in Shanxi region is studied. By the methods of Atkinson and Moya,the site response of each station and several source parameters are obtained and the inversion results from both methods are compared and analyzed. The frequency-dependent of inelastic attenuation coefficient Q is estimated as Q(f) =323.2 f 0.506 . The site responses of 14 seismic stations do not show significant amplification,which is consistent with their basement on rock. We also found the dependence of corner frequency on seismic moment,seismic moment on stress drop,source radius on stress drop.

引文

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