两种数字强震动仪的基岩场地观测对比  

Comparative Observation of Two Kinds of Digital Accelerographs on the Same Basement Site

作　　者：闵祥仪[1] 刘旭宙[1] 卢大伟 周民都[1] 

机构地区：[1]中国地震局兰州地震研究所,兰州730000 [2]地壳运动监测工程研究中心,北京100081

出　　处：《地震研究》2008年第S2期629-632,646,共5页Journal of Seismological Research

基　　金："十五"中国数字地震观测网络项目甘肃省强震动分项资助.中国地震局兰州地震研究所论著编号:LC2008023

摘　　要：汶川8.0级地震余震强震动流动观测中,在具有对比观测条件的甘肃文县基岩山洞内,同时布设了瑞士MR2002记录器与美国ETNA流动强震仪器,并获得汶川地震3次强余震记录。对同一地震记录,对比2种仪器记录的峰值以及波形、功率谱、反应谱的形态。分析表明,2种仪器记录的每个地震事件的峰值和形态基本相同,说明其结果可以相互比照。During the mobile observation of the aftershocks of the Wenchuan,Sichuan,MS8.0 earthquake,we deployed MR2002 recorder(made in Switzerland)and ETNA mobile strong motion instrument(made in America)in the cave of basement which is a strong motion observation station in Wenxian,Gansu,and they recorded three aftershocks.We compare the peak ground acceleration(PGA),the waveform,FFT spectra,and the shape of acceleration response spectra of the same aftershock recorded by two kinds of instruments,and find their PGA is similar in the form basically,which shows the comparability of two kinds of records.

关 键 词：汶川8.0级地震 数字强震动仪 对比观测 峰值加速度 

分 类 号：P315.9[天文地球—地震学]