中等地震前信息增益时空变化特征
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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.
引文
[1] 沈萍,冯国政.信息增益在地震趋势估计中的应用[J].中国地震,1996,4.
    [2] 宋俊杰.统计信息分析[C].天津:南开大学出版社,1986.
    [3] 郑治真,张少英.瞬态谱估计理论及其应用[C].北京:地震出版社,1993.

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