利用遗传算法反演山西地区非弹性衰减系数和场地响应  

Inversions of Inelastic Attenuation Coefficient and Site Response of Shanxi by Genetic Algorithm

作　　者：梁向军[1,2] 刘林飞[3,2] 张蕙[1,2] 张玲[1,2] 孟晓琴[1,2] 

机构地区：[1]山西省地震局,山西太原030021 [2]太原大陆裂谷动力学国家野外科学观测研究站,山西太原030025 [3]山西省地震局太原基准地震台,山西太原030025

出　　处：《山西地震》2013年第1期4-8,共5页Earthquake Research in Shanxi

基　　金：中国地震局星火计划(XH12008Y)

摘　　要：运用山西地震台网的27条数字地震波形资料,基于遗传算法,用Atkinson方法得到山西地区的品质因子Q值随频率的关系。采用Moya方法反演地震的台站场地响应,40个台站的场地响应均表现为与频率有关,其中27个台站的场地响应在频率域不平坦,只有部分台站的场地响应基本没有放大,在1附近,主要是由于这些台站的仪器安放于干扰较小的山洞所致。Based on the 27 digital seismic waveforms data from Shanxi seismic network, the quality factor Q with frequency of Shanxi region are inversed by Atkinson＇s genetic algorithm. Site responses of 40 stations are inversed by Moya method. Site response of all stations are frequency related. Among which, site responses of 27 stations are uneven in frequency domain. Only a number of the stations almost have no site magnification , due to their quiet instrument environments in caves.

关 键 词：Q值 场地响应 山西地区 

分 类 号：P315.5[天文地球—地震学]