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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 (유량조사사업단 유량조사실 금강유량그룹) ;
  • 정충길 (건국대학교 사회환경시스템공학과) ;
  • 박종윤 (건국대학교 사회환경시스템공학과) ;
  • 정성원 (유량조사사업단) ;
  • 김성준 (건국대학교 사회환경시스템공학과)
  • 투고 : 2012.06.29
  • 심사 : 2012.12.14
  • 발행 : 2013.01.31

초록

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 $km^2$ 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 ($K_{sat}$) for IDW, KRI, and THI were 0.33, 0.31, and 0.43 cm/hr, and the soil suction head at the wetting front (${\Psi}_f$) were 4.10, 3.96, and 5.19 cm $H_2O$ respectively. These parameters affected the infiltration process by the spatial distribution of antecedent moisture condition before a storm.

키워드

참고문헌

  1. Emerson, C. H., 2003. Evaluation of the additive effects of stormwater detention basins of the watershed. Univ. of Drexel, Philadelphia.
  2. Hunter, S., B. Vieux, F. Ogden, J. Niedzialek, C. Downer, J. Addiego, and J. Daraio, 2003. A test of two distributed hydrologic models with WSR-88D radar precipitation data input in Arizona. 31st Intl. Conf. on Radar Meteorology, Seattle, Washington, 6-12 Aug.
  3. Kim, S. J., 1998. Grid-based kinematic wave storm runoff model (KIMSTORM)(II). Journal of the Korea Water Resources Association 31(3): 309-315 (in Korean).
  4. Kim, W. I., K. D. Oh, W. S. Ahn, and B. H. Jun, 2008. Study on flood prediction system based on radar rainfall data. Journal of the Korean Society of Civil Engineers 41(11): 1153-1162 (in Korean). https://doi.org/10.3741/JKWRA.2008.41.11.1153
  5. Lee, M. H., 2010. A study of a distributed flood runoff model for its application. Ph.D. diss., Ajou University (in Korean).
  6. Nash, J. E., J. V. Sutcliffe, 1970. River flow forecasting through conceptual models Part I: A discussion of principles. Journal of Hydrology 10(3): 282-290. https://doi.org/10.1016/0022-1694(70)90255-6
  7. Park, J. H., B. S. Kang, G. S. Lee, and E. R. Lee, 2007. Flood runoff analysis using radar rainfall and Vflo model for Mangang Dam watershed. Journal of the Korean Association of Geographic Information Studies 10(3): 13-21 (in Korean).
  8. Vieux, B. E., 2002. Distributed hydrologic modeling using GIS. 2nd Edition, Kluwer Academic Pub.