宝昌地震台面波震级偏差分析

Analysis of surface wave magnitude deviation of large earthquake quick report at Baochang Seismic Station

选取宝昌地震台2016年1月至2018年12月国内外M_(S)≥5.0地震震级资料,将其与中国地震台网中心(CENC)地震数据管理与服务网站公布的标准震级进行震级偏差统计分析,并从震级、震中距、震中方位、震源深度等方面讨论了宝昌地震台面波震级存在偏差的原因。

This paper selects magnitudes measured by the Baochang Seismic Station for M_(S)≥5 earthquakes from January 2016 to December 2018 and carries out a statistical analysis of their deviation from the standard magnitude published by the Seismic Data management and service website of China Earthquake Networks Center(CENC).This paper discusses the causes of the magnitude deviation in the quick report of Baochang Seismic Station from the aspects of magnitude,distance,azimuth,and focal depth.