西北地震学报2001，Vol.23Issue(1)：13-20,8.
基于单键群方法的地震前兆时空群集特征研究
A STUDY ON CLUSTERING FEATURES OF EARTHQUAKE PRECURSOR IN TIME-SPACE BY USING THE SINGLE-LINK CLUSTER METHOD
摘要
Abstract
By using the single-link cluster method, precursor clusteringfeatures in time-space of the Tangshan and Datong earthquakes are studied. Time-space scanning to information entropy,average link length of the SLC frame and accumulation slide frequency of precursors of the two earthquakes is made.The results show that anomalies of the SLC frame before the earthquakes are very obvious,and can be divided into five periods.The anomalous magnitude is the largest from June,1975 to June,1976(fourth period).The information entropy drops further,change of average link length is the same with that in the fourth period and accumulation slide frequency of the precursors increases one month before the earthquakes(fifth period).The change period of anomalies may be taken for the judging index of middle or short term prediction of earthquakes.Change process of information entropy from outside to area of coming earthquake epicenter may be used to judge the range of earthquake danger area.关键词
唐山地震/地震前兆/异常特征/大同地震/单键群分类
天文与地球科学引用本文复制引用
刘希强,王梅,王华林,周蕙兰..基于单键群方法的地震前兆时空群集特征研究[J].西北地震学报,2001,23(1):13-20,8.基金项目
国家自然科学基金资助项目 （）
