Parameters Study of Linear Reservoir Models for Rainfall-Runoff Response

강우-유출에 대한 선형저수지 모형의 매개변수 연구

  • Published : 1999.12.01

Abstract

In this study, a various rainfall-runoff modelling approaches have been applied to the runoff response of flood hydrograph in three experimental watershed of the western part of korea. Mathematical models of runoff response also have been studied including linear system theory based on modeling techniques. Eight models were operated at the five water level gauging stations and the parameters of each model were computed by the Rosenbrock's hill climbing method to minimize the objective function. For the parameter verification of the models, a different complex rainfall-runoff event was selected in the same of the three river basins and derived IUH of the each model could be calibrated. Furthermore multiple regressions of the logarithmic transformation method between model parameters and catchment characteristics were studied in the selected five station.

서해안의 3개 실험유역을 선정, 강우-유출 현상 중 홍수수문곡선을 모의하기 위하여 선형저수지 모형을 적용하고 모형의 매개변수를 유역특성과 상관시켜 회귀분석을 실시하였다. 분석을 위하여 총 8개 모형이 이용되었으며 3개 유역, 5개 수위관측지점에서 시험·적용하였다. 선정된 모형의 매개변수 최적화는 선형계획기법의 일종인 Rosenbrock방법을 이용하였고 유도된 모형의 매개변수는 또 다른 강우-유출 사상에 모의하여 검정하였다. 그리고 검정된 모형 중 Nash모형은 저수지 수(N)와 저류상수(k), 그리고 선형저수지 모형의 경우 저류상수(k)를 유역특성치인 유역의 크기, 경사도 및 하천길이와 상관시켜 회귀분석을 실시하였으며 이 결과는 무계측 유역의 순간단위도(IUH)를 유도하는데 이용할 수 있을 것이다.

Keywords

References

  1. Agricultural Development Corporation The hydrological expert report of Keum-gang and Pyong-taek Agricultural development project Agricultural Development Corporation
  2. Agricultural Development Corporation The hydrological expert report of Young-san river basin development porject Agricultural Development Corporation
  3. Irrigation and drainage paper no.19 Mathematical models in hydrology Food and Agriculture Organization
  4. In : Drainage principles and application Vol. 2 Rainfall-runoff relation and computational models Krayenhoff Van de Leur, D. A.
  5. IASH, publ. 45 v.3 The form of instantaneous unit hydrograph Nash, J. E.
  6. Computer Journal 3 An automatic method of finding the greatest of least value of a function Rosenbrock, H. H.
  7. Symposia Darcy. IASH, publ. 42 v.3 A method of revision of the river discharge by means of a rainfall model Sugawara, M.;Maruyama, F.
  8. Linear theory of hydrologic systems U.S. Dep. of Agriculture
  9. Korean Asso. of Hydro. Sci.(KAHS) v.20 no.3 A study of parameters for linear reservoir models Y. J. Suh;J. W. Ko
  10. Proceedings of the 1992 Regional Conference, International Rainwater Catchment Systems Association v.2 Parameter study of runoff models for the estuarine reservoirs Y. J. Suh