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Application and Comparison of GeoWEPP model and USLE model to Natural Small Catchment - A Case Study in Danwol-dong, Icheon-si  

Kim, Min-Seok (Department of Geological and Environmental Hazards, Korea Institute of Geoscience and Mineral Resources)
Kim, Jin-Kwan (Department of Geological and Environmental Hazards, Korea Institute of Geoscience and Mineral Resources)
Yang, Dong-Yoon (Department of Geological and Environmental Hazards, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Economic and Environmental Geology / v.40, no.1, 2007 , pp. 103-113 More about this Journal
Abstract
The empirical USLE and the physically-based GeoWEPP which were distributed model linked with GIS (Geographical Information System) were applied to small natural catchment located in Icheon-si, Gyeonggi-do, South Korea. The results using by two models were total sediment yield from study catchment between January, 2004 and January, 2005. During the study period, the observed total sediment yield was 270.54 ton and the total sediment yield computed by USLE and GeoWEPP model were 358.1 ton and 283.30 ton, respectively. Each of results computed by USLE and GeoWEPP overestimated more than the observed total sediment yield, but, based on the results, the total sediment yield computed by GeoWEPP approximated to the observed result. We suggest that the reason why the total sediment yield using by models overestimated was that computed amounts by two models did not contain the amount of suspended sediment flowed over the weir.
Keywords
sediment yield; small catchment; GeoWEPP model; USLE model;
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Times Cited By KSCI : 1  (Citation Analysis)
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