Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Runoff Analysis of Modified TOPMODEL with Subsurface Storm Flow Generation Mechanism

지표하 흐름을 고려한 개선된 TOPMODEL의 유출분석연구

  • 이학수 (부산대학교 청정공학협동과정) ;
  • 한지영 (부산대학교 환경공학과) ;
  • 김경현 (부산대학교 환경기술·산업개발연구센타) ;
  • 김상현 (부산대학교 공과대학 환경공학과)
  • Published : 2001.08.01
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Abstract

This paper investigates the applicability of a modified version of TOPMODEL considering shallow subsurface storm flow in a forested mountaneous catchment. The macroporous soil structure provides a hydrological pathway for rapid runoff generation. A modified version of TOPMODEL introduces the two-storage system to analyze the hydrograph recession including rapid subsurface storm flow component. The two-month continuous hydrologic simulations of sulmachun watershed suggest that a modified version of TOPMODEL represents comprehensive and realistic flow generation mechanism comparing to those of an original version of TOPMODEL. The results of parameter calibration with Monte-Carlo method indicate a modified version of TOPMODEL produces a set of physically meaningful parameters.

본 연구에서는 지표하층과 암반층 사이의 지표하흐름을 기존 TOPMODEL의 구조에 연계시킨 수정 TOPMODEL의 국내 유역 적용성을 검증하였다. 지표하층에 존재하고 있는 대공극은 신속한 유출발생을 위한 수문경로를 제공하고 있으며, 수문감쇠곡선 분석을 위한 이중저류체계의 필요성을 의미한다. 설마천 유역을 대상으로 2개월간의 연속적인 유역수문거동을 모의한 결과 수정 TOPMODEL은 기존 TOPMODEL에 비해 유출발생과정을 모다 포괄적이고, 현실적으로 재현할 수 있는 것으로 밝혀졌다. Monte-Carlo 방법을 도입한 매개변수 산정결과도 수정 TOPMODEL의 경우가 물리적으로 타당한 것으로 밝혀졌다.

Keywords

References

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