用Moya方法反演门源地区数字地震台站场地响应  

Site Response of Digital Seismic Stations in Menyuan Area Inversed by Moya Method

作　　者：赵燕杰[1] 

机构地区：[1]青海省地震局,青海西宁810000

出　　处：《地震研究》2016年第S1期101-106,134,共7页Journal of Seismological Research

基　　金：青海省地震局科技基金(201603B)资助

摘　　要：基于2016年1月21日青海门源6.4级地震100个MS≥1.0余震序列资料,运用Atkinson法测得青海门源地区Q值,并用Moya法反演了其中24个台站的场地响应。结果表明:在1~20 Hz范围内24个子台的场地响应与频率有关,其中位于震中南部的11个台站场地响应平稳变化,接近1;位于震中东南的11个台站场地响应在低频部分接近1,高频部分衰减至0.1;震中西南的2个台站场地响应高频部分持续放大后衰减。Based on the 100 M_S≥1.0 aftershock sequence data of Qinghai Menyuan M_S6.4 earthquake on Jan.21,2016,we obtained the Q value in Qinghai Menyuan area by applying the method of Atkinson,and inversed the site responses of 24 stations by Moya method.The results showthat the site response of 24 stations is related to the frequency within the range of 1 ~ 20 Hz.The site responses of 11 stations located in the south of epicenter change smoothly,and are close to 1.The lowfrequency part of site response of 11 stations located in the southeast of epicenter is close to 1,the high frequency part attenuate to 0.1.The high frequency part of site response of 2 stations located in the southwest of epicenter attenuates after continuous amplification.

关 键 词：门源地震 Q值 场地响应 Moya法 

分 类 号：P315.78[天文地球—地震学]