天津测震台网各子台震级偏差浅析

英文篇名：Preliminary analysis of magnitude deviation of sub-stations in Tianjin seismic network
中文刊名：国际地震动态
英文刊名：Recent Developments in World Seismology
作者：岳秀侠 ; 崔晓峰 ; 陈明传 ; 李冬圣
英文作者：Yue Xiuxia1) ; Cui Xiaofeng1) ; Chen Mingchuan2) and Li Dongsheng2)1) Earthquake Administration of Tianjin Municipality ; Tianjin 300201 ; China 2) Earthquake Administration of Hebei Province ; Shijiazhuang 050021 ; China
中文关键词：天津台网 ; 子台 ; 震级偏差 ; 原因分析
英文关键词：Tianjin seismic network ; sub-station ; magnitude deviation ; reason analysis
出版日期：2007-04-25
机构：天津市地震局,天津市地震局,河北省地震局,河北省地震局天津300201,天津300201,石家庄050021,石家庄050021
年：2007
期：04
出版单位：国际地震动态

摘要

选取了2002—2005年天津台网记录的100个地震速报事件,利用NEDisa软件重新进行分析处理,根据定位结果对天津各台站的震级数据资料进行整理、归类分析,计算出每个地震各台站与台网平均震级的偏差和各台的多个地震的震级平均偏差。根据速度震级公式中震级的影响因素,主要从量规函数和台基两方面进行震级偏差原因分析,给出了各台的台基校正值,台基校正后震级偏差统计表。结果显示天津台网现采用的量规函数在震中距0~20 km内对震级偏差稍有影响,其他范围内影响不大;而台基对震级偏差影响较大,对天津台网各子台进行台基校正是很必要的。
In the text,100 quick earthquake reports recorded by Tianjin seismic network from 2002 to 2005 are selected,and made re-analysis by use of NEDisa software.Based on the new location of the earthquakes,the magnitude deviation from average of each sub-station in Tianjing seismic network are calculated.The cause of the deviation has been studied both from standard function and ground factor of the station,then the base correction of each station and magnitude deviation after correction are given.The results show that influence of standard function adopted can be omitted except in the epicentral distant less than 20 km,while, the influence of ground factor on the magnitude deviation of each station is significant,so it is necessary to made base correction for each station in Tianjin seismic network.

引文

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