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유역 공간 강우 산정방법에 따른 VfloTM 분포형 강우-유출 모형의 매개변수 평가 - 금호강 동촌 유역을 대상으로 -
Parameter Estimation of VfloTM Distributed Rainfall-Runoff Model by Areal Rainfall Calculation Methods - For Dongchon Watershed of Geumho River -
김시수 ( Kim Si Soo ) , 정충길 ( Jung Chung Gil ) , 박종윤 ( Park Jong Yoon ) , 정성원 ( Jung Sung Won ) , 김성준 ( Kim Seong Joon )
UCI I410-ECN-0102-2018-500-003780727

This study is to evaluate the parameter behavior of VfloTM distributed rainfall-runoff model by applying 3 kinds of rainfall interpolation methods viz. Inverse Distance Weighting (IDW), Kriging (KRI), and Thiessen network (THI). For the 1,544 km2 Dongcheon watershed of Nakdong river, the model was calibrated using 4 storm events in 2007 and 2009, and validated using 2 storm events in 2010. The model was calibrated with Nash-Sutcliffe model efficiency of 0.97 for IDW, 0.94 for KRI, and 0.95 for THI respectively. For the sensitive parameters, the saturated hydraulic conductivity (Ksat) for IDW, KRI, and THI were 0.33, 0.31, and 0.43 cm/hr, and the soil suction head at the wetting front (Ψf) were 4.10, 3.96, and 5.19 cm H2O respectively. These parameters affected the infiltration process by the spatial distribution of antecedent moisture condition before a storm.

[자료제공 : 네이버학술정보]
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