한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제26권3호
  • /
  • Pages.532-539
  • /
  • 2010
  • /
  • 2289-0971(pISSN)
  • /
  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

미계측 유역의 유출량 산정을 위한 합성단위도 개발

Development of Synthetic Unit Hydrograph for Estimation of Runoff in Ungauged Watershed

  • 최용준 (충남대학교 토목공학과) ;
  • 김주철 (한국수자원공사 수자원연구원) ;
  • 정동국 (한남대학교 건설시스템공학과)
  • 투고 : 2010.03.24
  • 심사 : 2010.04.21
  • 발행 : 2010.05.30
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초록

The synthetic unit hydrograph is developed and verified using Nash model and characteristic velocities considering geomorphological dispersion in this present study. Application watersheds are selected 5 subwatersheds of Bocheong basin. The mean and variance of hillslope and stream path length are estimated in each watershed with GIS. Characteristic velocities are calculated using estimated path lengths and moment characteristics of rainfall-runoff data. Characteristic velocities of random devised 7 ungauged watersheds are estimated through regional analysis of chracteristic velocities in guaged watershed. And Nash model parameters and IUH are derived using characteristic velocities and path length in the gauged and ungauged watershed. The result to compare of IUH about gauged watershed and random devised ungauged watershed in application watershed presents coherently hydrologic response characteristics that peak discharge is reduced and peak time is extended. In conclusion, Developed synthetic unit hydrograph in this study expects that it is useful method to estimate runoff discharge for managing of water pollution in ungauged watershed.

키워드

과제정보

연구 과제 주관 기관 : 한남대학교

참고문헌

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