大同中心站YRY-4钻孔应变仪与BBVS测震仪同震数据对比分析  

Comparative Analysis of Co-seismic Data between YRY-4 High-sampling-rate Borehole Strainmeter and BBVS Seismograph at the Datong Central Station

作　　者：李文超[1,3] 刘瑞春[2,3] 刘炜[1,3] 闫美蓉 殷锴[1,3] 高龙飞 LI Wen-Chao;LIU Rui-chun;LIU Wei;YAN Mei-rong;YIN Kai;GAO Long-fei(Datong Earthquake Monitoring Center Station,Shanxi Earthquake Agency,Datong,Shanxi 037008,China;Shanxi Earthquake Agency,Taiyuan,Shanxi 030021,China;National Continental Rift Valley Dynamics Observatory of Taiyuan,Taiyuan,Shanxi 030025,China)

机构地区：[1]山西省地震局大同地震监测中心站,山西大同037008 [2]山西省地震局,山西太原030021 [3]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

出　　处：《山西地震》2023年第2期11-14,共4页Earthquake Research in Shanxi

基　　金：山西省地震局科研项目(SBK-1812);中国地震局三结合科研项目(CEA-JC/3JH-160404)。

摘　　要：选取典型震例,对大同地震监测中心站(以下简称大同中心站)YRY-4型高采样率钻孔应变仪与BBVS测震仪记录的地震波进行比较,分析同一地震在不同设备记录下的地震波异同与关联情况,利用S变换方法,分析整个同震时段的频谱动态演化特征。结果表明,二者的采样率不同,但反映出的频谱演化过程有较好的一致性,说明对同场地的同一地震事件,二者的记录信号可相互参照对比。Taking typical seismic events as examples,a comparative analysis is conducted on the seismic waves recorded by the BBVS seismograph and the YRY-4 high-sampling-rate borehole strainmeter at the Datong Seismic Monitoring Center.The similarities,differences,and correlations of the seismic waves recorded by these two devices for the same earthquake event are analyzed.The S-transform method is applied to analyze the dynamic evolution of the frequency spectra during the entire co-seismic period.The results show that although the sampling rates of the two devices are different,they exhibit good consistency in the spectral evolution process.This indicates that the recorded signals of the two devices can be mutually referenced and compared for the same event at the same location.

关 键 词：测震 钻孔应变 同震 波形特征 

分 类 号：P315.63[天文地球—地震学]