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[1]LEE Chin-yu,YU Xin-xiao.Analysis on Characteristics of Rainfall by Fuzzy Theory[J].Research of Soil and Water Conservation,2010,17(02):20-23.

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Analysis on Characteristics of Rainfall by Fuzzy Theory

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 02 Page number: 20-23 Column: Public date: 2010-04-20

Title:: Analysis on Characteristics of Rainfall by Fuzzy Theory

Author(s):: LEE Chin-yu¹, YU Xin-xiao²; 1. National Pingtung University of Science and Technology, Department of Soil and Water Conservation, Pingtung, Taiwan 91201, China;
2. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China

Keywords:: fuzzy theory; rainfall; rainfall station

CLC:: P426.6

DOI:: -

Abstract:: The density of rainfall observation stations in Taiwan are more than the other countries on the world. But the rainfall data had missed due to the different years of commencement, natural disaster and/or human activities. So, rainfall data in all observation stations have fuzzy characteristics. The characteristic of rainfall event has three factors, including rainfall, rainfall duration and rainfall pattern. The statistical values about total rainfall, average rainfall, maximum rainfall, minimum rainfall, median rainfall, rainfall duration, time to peak, index of Skewness and Kurtosis were used to analyze. Therefore, this study had discussed the variance using statistical and Fuzzy theory through 31 stations about the rainfall events of over 100 mm rainfall and 3 rainfall duration (1 177 events) from 1992 to 2004 at Pingtung area. The study showed that the rainfall events had the characteristics of long duration and high kurtosis. The rainfall observation station C0R38 is near the thorough rainfall characteristics in Pingtung.

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