高速铁路强震台站与国家强震台站地震记录对比分析  

Comparative Analysis of Earthquake Records for High-Speed Railway Strong Motion Stations and National Strong Motion Stations

作　　者：黄俊 杨江 夏界宁 罗松 HUANG Jun;YANG Jiang;XIA Jiening;LUO Song(Hubei Earthquake Agency,40 Hongshance Road,Wuhan 430071,China;Hubei Key Laboratory of Earthquake Early Warning,40 Hongshance Road,Wuhan 430071,China;Wuhan Institute of Seismic Scientific Instrument Co Ltd,11 Qinglong Road,Xianning 437000,China)

机构地区：[1]湖北省地震局,武汉430071 [2]地震预警湖北省重点实验室,武汉430071 [3]武汉地震科学仪器研究院有限公司,湖北咸宁437000

出　　处：《大地测量与地球动力学》2024年第10期1082-1088,共7页Journal of Geodesy and Geodynamics

基　　金：湖北省重点研发计划(2022BAD059,2023BAB118);中国地震局地震研究所和应急管理部国家自然灾害防治研究院基本科研业务费(IS202216317)。

摘　　要：2016-01-21青海门源发生6.4级地震,高速铁路强震台站和国家强震台站都记录到这次破坏性地震。对比分析2种强震台站的建台方式、观测环境及加速度、速度、位移时程、互功率密度谱和傅里叶幅值谱等特点发现,随着高频分量的减少,2种台站位移时程的相似性高于速度时程,速度时程的相似性高于加速度时程;与地震破坏性密切相关的0.1~10 Hz频带内,高速铁路强震台站和国家强震台站的UD向地震记录受场地条件的影响都较小。联合高速铁路强震台站和国家强震台站数据计算地震预警震级和地震仪器烈度,结果发现,高速铁路强震台站可满足地震预警和烈度速报要求,且2种台站数据的融合可有效提高地震预警和烈度速报的准确度。The M_S6.4 earthquake occurred at Menyuan county,Qinghai province,on 21 January 2016.Both the high-speed railway strong motion stations and national strong motion stations recorded the destructive earthquake data.We analyze the two types of strong motion stations,compare construction method,station observation environment,and acceleration,velocity,displacement waves,cross spectrums and Fourier amplitude spectrums,with the decrease of the high frequency component.The results show that the similarity of the displacement time history is higher than that of the velocity time history,and the similarity of the velocity time history is higher than that of the acceleration time history.In 0.1 to 10 Hz frequency band,which is closely related to earthquake damage,the vertical earthquake records that both high-speed railway strong motion stations and national strong motion stations are less affected by site conditions.In addition,we calculate the early earthquake warning magnitude and seismic instrument intensity by the records of the high-speed railway strong motion stations and the national strong motion stations.The results show that the high-speed railway strong motion stations can meet the requirements of early earthquake warning and intensity rapid reporting and the combination of the two types of stations can effectively improve the accuracy of early earthquake warning and seismic intensity rapid reporting.

关 键 词：高速铁路强震台站 国家强震台站 场地条件 波形相似性 地震预警和烈度速报 

分 类 号：P315[天文地球—地震学]