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Development of SATEEC R Module using Daily Rainfall Data
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 Title & Authors
Development of SATEEC R Module using Daily Rainfall Data
Jang, Chun-Hwa; Ryu, Ji-Chul; Kang, Hyun-Woo; Kum, Dong-Hyuk; Kim, Young-Sug; Park, Hwa-Yong; Kim, Ki-Sung; Lim, Kyoung-Jae;
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Universal Soil Loss Equation (USLE) has been used to estimate potential long-term soil erosion in the fields. However, the USLE does not estimate sediment yield due to lack of module considering sediment delivery ratio (SDR) for watershed application. For that reason, the Sediment Assessment Tool for Effective Erosion Control (SATEEC) system was developed and applied to compute the sediment yield at watershed scale. However, the R factor of current SATEEC Ver. 2.1 was estimated based on 5-day antecedent rainfall, it is not related with fundamental concept of R factor. To compute R factor accurately, the energy of rainfall strikes should be considered. In this study, the R module in the SATEEC system was enhanced using formulas of Williams, Foster, Cooley, CREAMS which could consider the energy of rainfall strikes. The enhanced SATEEC system ver. 2.2 was applied to the Imha watershed and monthly sediment yield was estimated. As a result of this study, the and NSE values are 0.591 and 0.573 for calibration period, and 0.927 and 0.911 for validation period, respectively. The results demonstrate the enhanced SATEEC System estimates the sediment yield suitably, and it could be used to establish the detailed environmental policy standard using USLE input dataset at watershed scale.
Sediment yield;Soil loss;SATEEC;USLE;R module;
 Cited by
토양 특성 및 토지이용에 따른 낙동강 상류지역 토양침식위험성 평가,박찬원;손연규;현병근;송관철;전현정;조현준;문용희;윤순강;

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