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

摘要: 着重研究了河南省及邻区6次M_L4.7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Ⅰ型(异常-发震型)和Ⅱ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。

Abstract: 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.