2017-06三峡库区M4.3、M4.1双地震强震记录分析  

Analysis of Strong Motion Records of M4.3 and M4.1 Double Earthquakes in the Three Gorges Reservoir Area in June 2017

作　　者：戴苗[1,2] 王秋良 刘坚[1] 黄俊[1] 魏贵春[1,2] 申学林[1,2] 

机构地区：[1]中国地震局地震研究所(地震预警湖北省重点实验室),武汉市洪山侧路40号430071 [2]湖北省地震局,武汉市洪山侧路40号430071

出　　处：《大地测量与地球动力学》2018年第1期18-23,共6页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41572354);中国地震局地震研究所所长基金(IS201656264);中国地震局测震台网青年骨干培养专项(20160516)~~

摘　　要：2017-06-16、06-18湖北省秭归县和巴东县先后发生M4.3、M4.1地震,武汉城市圈地震预警和烈度速报台网先后获取这2个事件13组和11组强震动记录。对2次地震进行反应谱和傅里叶谱分析,获取峰值加速度和仪器烈度图,得到仪器烈度值最大为7.1度,与震中现场灾害评估烈度7度、大部分地区5度基本一致,充分体现了武汉城市圈地震预警与烈度速报示范工程项目建设成效。M4.3 and M4.1 double earthquakes occurred in Zigui and Badong counties of Hubei prov- ince in June 16 and June 18, 2017. The Wuhan city circle earthquake early warning and intensity expe- dited reporting system demonstration project network successively obtained 13 and 11 strong motion records of the two events. We analyze the response spectrum and Fourier spectrum of the two earth- quakes, and obtain the peak acceleration and instrumental intensity map. Results show that the maxi- mum intensity of the instrument is 7.1 degrees, which is basically consistent with the intensity of the disaster assessment on the site of the epicentre of 7 degrees and 5 degrees in most areas. These results fully reflect the efficiency of Wuhan city circle earthquake early warning and intensity expedited repor- ting system demonstration project.

关 键 词：强震动记录 峰值加速度 频谱分析 仪器烈度 

分 类 号：P315[天文地球—地震学]