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.
出处
《地震研究》
CSCD
北大核心
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
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
Wenchuan MS8.0 earthquake
digital strong motion instrument
comparative observation
peak acceleration
