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Characteristics Analysis for RUSLE Factors based on Measured Data of Gangwon Experimental Watershed (I)  

Lee, Jong-Seol (국립방재교육연구원 방재연구소)
Chung, Jae-Hak (국립방재교육연구원 방재연구소)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.9, no.6, 2009 , pp. 111-117 More about this Journal
Abstract
The RUSLE(Revised Universal Soil Loss Equation) has been most widely used to estimate sediment yield in Korea. However RUSLE factors have not been verified based on measured data of sediment yield. The analysis of characteristics for the rainfall erosivity factor R was performed in this study. The R factor of RUSLE is expressed as multiple of total rainfall energy and maximum 30 min rainfall intensity. In this study, the characteristics of 10 rainfall energy equations were investigated using data measured in Gangneung experimental watershed, and applicability of each equations was reviewed based on results of the correlation analysis between measured sediment yield and total rainfall, between measured sediment yield and maximum intensity, and between measured sediment yield and total rainfall energy yield. Also, the relationship of I30 and I60 was proposed using 10-min rainfall data during 9 years.
Keywords
RUSLE; Rainfall Erosivity Factor; Rainfall Energy; Maximum 30-min and 60-min Intensity;
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