摘要
2015年9月14日河北昌黎发生M 4.2和M 3.3地震,发震时刻相差13 min,震中位置基本一致,共有12个强震动台站记录到M 4.2地震近地场地面运动,采用反应谱和傅里叶谱处理分析此次地震强震动记录,并对比土层台和基岩台强震动记录特征,由强震动数据得出最小震中距台站的仪器烈度约为Ⅴ度,与烈度速报和灾害评估宏观烈度基本一致,体现出强震动台网建设的作用和效果。
Two earthquakes of M 4.2 and M 3.3 occurred in Changli, Hebei Province on September 14, 2015,with a 13 minute interval and similar epicenters. The near-earth field ground motion of Changli M 4.2 earthquake is recorded by 6 strong motion stations of Hebei Strong Motion Network and 6 portable stations which were built in background filed project of National Strong Motion Network Center. The maximum acceleration recorded by Qingtuoying Seismic Station is 33.5 cm·s-2. According to the analysis of the response spectrum and the Fourier spectrum of the strong motion recording of Changli M 4.2 earthquake, and the comparison between the soil and bedrock stations strong motion recording characteristics, the instrument intensity of the nearest station derived from the strong motion data is about V, basically same as the rapid intensity and disaster assessment macro intensity. The similarity can fully reflect the role and effect of the strong motion network construction.
作者
杨锐
解全才
杨程
毛国良
董一兵
王莉婵
刘新
Yang Rui;Xie Quancai;Yang Cheng;Mao Guoliang;Dong Yibing;Wang Lichan;Liu Xin(Earthquake Administration of Hebei Province, Shijiazhuang 050021, China;Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China)
出处
《地震地磁观测与研究》
2016年第4期66-72,共7页
Seismological and Geomagnetic Observation and Research
基金
中国地震局测震台网青年骨干培养专项(项目编号:20160504)
河北省地震局科技星火项目(项目编号:DZ20160407040)资助
关键词
强震动记录
加速度峰值
频谱分析
地震烈度
strong motion record
the peak of acceleration
analysis of spectral characteristics
seismic intensity
