桂林台大震速报震级偏差的分析  

Magnitude Deviation of Strong Earthquake Repaid Report of Guilin Digital Seismic Station

作　　者：苏梅艳 毛世榕 蒋志峰 

机构地区：[1]桂林地震台,广西桂林541004

出　　处：《华南地震》2013年第3期92-98,共7页South China Journal of Seismology

摘　　要：依据桂林地震台测震数字记录2006~2011年大震速报地震资料,运用EDAS软件对其重新测算,并以《中国地震台网观测报告》给出的震级为标准震级,进行震级偏差统计分析,探讨桂林台大震速报震级偏差存在的原因。经过综合分析发现,桂林台的偏差值与震中方向、震中距和震级大小相关,因此桂林台的震级偏差修正值需综合考虑这些因素,取震中方向偏差修正值C方向、震中距偏差修正值C距离和震级偏差修正值C震级的平均值。On the basis of the digital records of Guilin Seismic Station from 2006 to 2011, this paper will recalculate the magnitude by using EDAS software and explore the reasons of magnitude deviation of earthquake quick report by taking the magnitude given by the ＂ China earthquake networks observation report＂ as standard magnitude to give statistical analysis. Based on the comprehensive analysis, we find that： the deviation of Guilin station is correlated with the epicenter direction, epicenter distance, and magnitude size; the correction value of magnitude deviation of Guilin station needs to consider these factors by taking the average value of the correction value of epicenter direction deviation, the correction value of epicenter distance deviation, the correction valu~ of rn^nltl^rl~ A,~v;,t;,~,,

关 键 词：桂林地震台 震级偏差 震级修正 

分 类 号：P315.75[天文地球—地震学]