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STUDY ON THE THRESHOLD VALVES OF RAINFALL OF LANDSLIDE HAZARDS FOR EARLY-WARNING AND PREDICTION IN ZHEJIANG PROVINCE

XIE Jian-ming~1,LIU Li-ling~1,YIN Kun-long~1,DU Hui-liang~2,NIU Xue-xin~2(1.Engineering Faculty, China University of Geosciences,Wuhan Hubei 430074,China; 2.Zhejiang Burean of Meteorology,Hangzhou Zhejiang 310021,China)  
Based on the characteristics of rainfall in Zhejiang Province,the authors divide rainfalls into typhoon rainfall and non-typhoon rainfall,and study,with the statistic method the correlation of regional landslide hazards and typhoon and non-typhoon rainfall and rainfall intensity.The effective rainfall model is defined by correlation analysis,and the threshold valves of critical rainfall and critical rainfall intensity are obtained to predict the time quantitatively.The indexes and grades of spatial early-warning are taken by the analysis of the easiness of landslide hazards and rainfall and rainfall intensity.In the end,it discusses the lagged time of landslides.
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