Abstract:M4.3 and M4.1 double earthquakes occurred in Zigui and Badong counties of Hubei province in June 16 and June 18, 2017. The Wuhan city circle earthquake early warning and intensity expedited 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 earthquakes, and obtain the peak acceleration and instrumental intensity map. Results show that the maximum 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 reporting system demonstration project.
DAI Miao,WANG Qiuliang,LIU Jian et al. Analysis of Strong Motion Records of M4.3 and M4.1 Double Earthquakes in the Three Gorges Reservoir Area in June 2017[J]. jgg, 2018, 38(1): 18-23.