Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Development of Grid-Based Conceptual Hydrologic Model

격자기반의 개념적 수문모형의 개발

  • Kim, Byung-Sik (Water Resources Research Div., Korea Institute of Construction Technology) ;
  • Yoon, Seon-Kyoo (Water Resources Research Div., Korea Institute of Construction Technology) ;
  • Yang, Dong-Min (Institute of Technology, NOAA Solution) ;
  • Kwon, Hyun-Han (Department of Civil Engineering, Chonbuk National University)
  • 김병식 (한국건설기술연구원 수자원.환경연구본부 수자원연구실) ;
  • 윤선규 (한국건설기술연구원 수자원.환경연구본부 수자원연구실) ;
  • 양동민 (노아솔루션 기술연구소) ;
  • 권현한 (전북대학교 토목공학과)
  • Received : 2010.05.24
  • Accepted : 2010.07.19
  • Published : 2010.07.31
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Abstract

The distributed hydrologic model has been considerably improved due to rapid development of computer hardware technology as well as the increased accessibility and the applicability of hydro-geologic information using GIS. It has been acknowledged that physically-based distributed hydrologic model require significant amounts of data for their calibration, so its application at ungauged catchments is very limited. In this regard, this study was intended to develop a distributed hydrologic model (S-RAT) that is mainly based on conceptually grid-based water balance model. The proposed model shows advantages as a new distributed rainfall-runoff model in terms of their simplicity and model performance. Another advantage of the proposed model is to effectively assess spatio-temporal variation for the entire runoff process. In addition, S-RAT does not rely on any commercial GIS pre-processing tools because a built-in GIS pre-processing module was developed and included in the model. Through the application to the two pilot basins, it was found that S-RAT model has temporal and spatial transferability of parameters and also S-RAT model can be effectively used as a radar data-driven rainfall-runoff model.

분포형 수문모형은 컴퓨터 하드웨어의 급속한 발전과 GIS를 이용한 수문지리공간정보에의 접근성 및 활용성 증가에 따라 근래에 많은 발전을 이루게 되었다. 하지만 물리기반의 분포형 수문모형은 입력자료 구축 및 모형구동에 많은 시간과 노력이 필요하며 수문자료가 불충분한 미계측 유역에서는 모형의 구축이 어렵다는 한계점을 지니고 있다. 이에 본 논문에서는 개념적 격자 물수지 기법을 이용한 개념적 분포형 수문모형 S-RAT을 개발하였다. S-RAT 모형은 집중형 수문모형의 자료구축의 간편성과 분포형 수문모형의 공간적 유출해석 능력을 동시에 만족할 수 있으며 격자기반 레이더강우자료를 활용할 수 있다. 또한 전처리과정 및 유역의 지형자료 추출 기능을 탑재함으로 상용 GIS 분석 도구들에 대한 의존성이 없는 장점을가진다. 본 논문에서는 도시유역인 중랑천 유역과 산지유역인 내린천 유역 적용을 통해 S-RAT 모형의 유출모의능력 및 매개변수의 시공간적 전이성을 확인하였으며 지상강우와 레이더강우의 입력 자료로써의 활용성을 확인하였다.

Keywords

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