中等地震前信息增益时空变化特征  

The spatial-temporal characteristics of information gain before medium earthquakes

作　　者：孙瑞玲 常祖 峰赵新 邵玉花 宋宁 王明富 

机构地区：[1]河南省新乡市地震局,河南新乡453003

出　　处：《华北地震科学》2001年第4期59-64,共6页North China Earthquake Sciences

摘　　要：着重研究了河南省及邻区 6次 ML4.7级以上地震前信息增益变化图像和信息增益时、空变化特征 ,依据这些特征将地震分为 型 (异常 -发震型 )和 型 (异常 -消失 -发震型 )两种类型。在此基础上 ,根据信息增益的时、空扫描图像 ,对异常地区的地震趋势和将要发生的地震的震级 (是否大于 5级 )、震中位置和发震时间进行了探讨。the variation of information gain and its spatial-temporal characteristics for six M L≤4.7 earthquakes in Henan Province and its adjacent area are mainly studied.Based on these characteristics,The earthquakes are classified into two categories;Ⅰ type (anomaly appearance-earthquake occurrence) and Ⅱ type (anomaly appearance-anomaly disappearance-earthquake occurrence).According to the spatial-temporal images of information gain,the tendency of potential earthquake,as well as its magnitude(if larger than 5),epicentral position and occurrence time in the abnormal area is discussed.

关 键 词：中等地震 信息增益 时空变化 地震趋势 震级 震中位置 发震时间 

分 类 号：P315.75[天文地球—地震学]