KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
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Application of K-DRUM Model for Pakistan Kunhar River Basin Considering Long-term Snow Melt and Cover

장기 융·적설을 고려한 파키스탄 Kunhar강 유역 K-DRUM모형 구축 및 적용

  • 박진혁 (한국수자원공사 K-water연구원) ;
  • 허영택 (한국수자원공사 K-water연구원) ;
  • 노준우 (한국수자원공사 K-water연구원) ;
  • 김세원 (한국수자원공사 K-water연구원)
  • Received : 2013.03.08
  • Accepted : 2013.08.28
  • Published : 2013.11.30
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Abstract

In this study, physics based K-DRUM(K-water Distributed RUnoff Model) using GIS spatial hydrologic data as input data was developed to account for the temperature variation according to the altitude change considering snow melt and cover. The model was applied for Pakistan Kunhar River Basin($2,500km^2$) to calculate long-term discharge considering snow melt and cover. Time series analysis of the temperature and rainfall data reveals that temperature and rainfall of the river basin differs significantly according to altitude change compared to domestic basin. Thus, applying temperature and altitude lapse rate during generate input data generation. As a result, calculated discharge shows good agreement with observed ones considering snow melt and accumulation characteristic which has the difference of 4,000 meter elevation above sea level. In addition, the simulated discharge strongly showed snow melting effect associated with temperature rise during the summer season.

본 연구에서는 GIS 공간 수문자료를 입력 자료로 활용하는 물리적기반의 분포형 강우유출모형(K-DRUM, K-water Distributed RUnoff Model)을 고도분포에 따른 기온변화와 융 적설 모의가 가능하도록 확장 개발하여 파키스탄 Kunhar강 유역($2,500km^2$)을 대상으로 융 적설을 고려한 장기 유출량 모의결과를 비교 분석하였다. 기온 및 강우 시계열 자료 분석 결과 동일한 유역 내 표고에 따른 기온 및 강우차가 국내유역과는 달리 매우 심하게 나타나 기온 및 고도감율을 적용하여 모형의 입력값으로 산정하였다. 해발고도 4,000m차이의 융 적설 특성을 반영한 유출량 재현성은 비교적 양호하였으며, 연중 유출패턴은 여름철 기온상승에 의해 융설로 인한 유출이 강하게 나타나고 있었다.

Keywords

References

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