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KMID : 1024520140230040533
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Journal of the Environmental Sciences
2014 Volume.23 No. 4 p.533 ~ p.541
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Flood Discharge to Decision of Parameters in Han Stream Watershed
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Jung Woo-Yul
Yang Sung-Kee
Kim Dong-Su
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Abstract
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The streams in Jeju Island have very distinctive hydrological and geological properties and there are a lot of limits in applying the general flood estimation method. This study presented parameters dominant in the Hancheon stream of Jeju Island by analyzing the sensitivity of parameters of HEC-HMS model regarding rainfall events in the target basin, and extracted the optimal parameter(Time of Concentration of Clark Unit Hydrograph: Kraven II method, Storage Coefficient: Sabol method) by analyzing and comparing it with the flood runoff data observed in the site and Jeju Island's observation data.
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KEYWORD
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HEC-HMS, Jeju island, Time of concentration, Storage coefficient
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