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STUDY ON SYNTHETIC INFORMATION ENTROPY OF MULTI PRECURSOR OBSERVING DATA

WANG Haitao YANG Maling YANG Youling QU Yanjun XU Qiulong ZHAO Cuiping ZHU Yan (Seismological Bureau of Xinjiang Uygur Autonomous Region,Urumqi 830011)  
Temporal series of the multi precursor observing data has been translated into probability temporal series by using the probabilization processing.Based on the work above,the synthetic information entropy of the information source system which is made up of the multi precursor observing items has been calculated by applying the basic principle of information theory.Calculating the 17 items of precursor observation data in Urumqi and its neighborhood,it has been found that the anomaly process of entropy decrease appeared half a year to one year before moderate and strong earthquakes.
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