2004年内蒙古M_s5.9地震异常分析

英文篇名：Analysis the exception of seismometry index before Inner Mongolia earthquake with M_s 5.9 in 2004
中文刊名：地震地磁观测与研究
英文刊名：Seismological and Geomagnetic Observation and Research
作者：韩晓明 ; 赵星
英文作者：Han Xiaoming and Zhao Xing (Earthquake Administration of Inner Mongolia Autonomous Region ; Hohhot 010010 ; China)
中文关键词：内蒙古M_s5.9地震 ; 波速比 ; 空间相关长度 ; 异常分析
英文关键词：Inner Mongolia earthquake with M_s 5.9 ; velocity ratio(V_P/V_S) ; correlation length ; anomaly analysis
出版日期：2012-06-25
机构：内蒙古自治区地震局;
年：2012
期：Z1
出版单位：地震地磁观测与研究

摘要

以2004年内蒙古东乌珠穆沁旗Ms5.9地震为研究对象,对震中区域的地震活动参量b值进行时间扫描计算,Ms5.9地震前b值表现为高值回落;在选取的时空范围内,计算出震中区域平均波速比和地震空间相关长度,Ms5.9地震前波速比变化过程为下降持续低值一回升发震,地震空间相关长度在震前趋势性上升,分析认为:可以把波速比的和地震空间相关长度的震前变化规律作为同一区域未来地震的预测依据。
Taking the Dong Ujimqin Qi M_S 5.9 earthquake as the study object,We calculate the time sweep curves of 6-value,then analyze their anomaly before the M_S 5.9 earthquake.Base on the selected temporal-spatial range,we calculate velocity ratio(V_P/V_S) and correlation length of epicenter region,then discuss their variety trend before earthquake:the variety course of velocity ratio(V_P/V_S) is descend-keep low value-rally,the variety course of correlation length had ascending trend.So we consider that the variety laws of velocity ratio(V_P/V_S) and correlation length may be a forecast basis before future earthquakes which will occur in the same area.

引文

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