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《NORTHWESTERN SEISMOLOGICAL JOURNAL》 1998-03
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A STUDY ON METHOD OF QUANTITATIVELY JUDGING GROUND FLUID ANOMALY CHARACTER AND EARTHQUAKE PREDICTION

ZHANG Xinji ZHANG Hui (Lanzhou Institute of Seismology,CSB,Lanzhou 730000)  
Using the analytical methods of anomaly frequency accumulation and change velocity,evolution character of ground fluid group anomalies with time before and after moderate and strong earthquakes in proper areas is studied.The results show that the ground fluid anomaly frequency accumulation curve and change velocity curve before and after earthquake exhibits three processes:stable (zero value fluctuation)—accelerating (successive positive value)—recovering (successive negative value).The changes of anomaly accelerated before earthquake.By using this method,anomaly character of ground fluid can be judged quantitatively in certain degree.The method also may be applied to judge anomaly nature of other kinds of precursory observation items.
【Fund】: 甘肃省自然科学基金 中国地震局兰州地震研究所青年地震科学基金
【CateGory Index】: P592,P315.7
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【Co-citations】
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