【摘要】 本文使用地震模式识别应用程序包—简称“PR” 程序包(the packageof program-to apple algorithms of pattern recognition)提供的CORA-3修改方法和Hamming方法,对北京及其邻近地区的地质、地貌和地球物理资料进行了新的研究。得到的结果如下:北京及其邻近地区M≥6.0级地震的震中主要分布在自新生代以来活动断裂(特别是主活动断裂)的交汇带内,新生代断陷盆地和新生代断陷盆地与平原或山区的接触地带。 本文对同一组资料用CORA-3方法、CORA-3修改方法、Hamming方法和加权Hamming方法的识别分类结果进行了比较。其中加权Hamming方法识别分类效果最好,CORA-3修改方法次之,Hamming方法和CORA-3方法更次之。 CORA-3方法可以通过识别的示性特征给出震中地区的地质背景及其相应的图象。Hamming方法计算简便、节约机时和内存,而且识别分类效果就本文而言,加权Hamming方法还略好于CORA-3修改方法。更多还原

【Abstract】 The revised CORA-3 and Hamming methods which are-deduced from the package of program-to apply algorithms of pattern recognition ("PR" package) are adopted here to study the geological, geomorphological and geophysical data of Beijing and its vicinity. We obtained the following results.Epicenters of M≥6 earthquakes in Beijing and its vicinity are distributed in the intersecting areas by active faults (especially by major active faults) of Cenozoic origin, and in Cenozoic depression basins as well as in the contacting areas of those, basins with plains or mountains.Comparisons between CORA-3, the revised CORA-3, Hamming and the Weighted Hamming methods are conducted to the same data set. The weighted Hamming method geets the best result for classification, the revised. CORA-3 second, and both Hamming and CORA-3 methods get worse results.CORA-3 and the revised CORA-3 methods can give the epicentral geological interpretation and its related patterns through recognized displaying features. The weighted Hamming method has simple calculation and can save both operation time and memory of computer, and its classification in this study is a little better than that from the revised CORA-3 method.更多还原