Journal of Korean Society for Geospatial Information Science (대한공간정보학회지)

Korea Spatial Information Society (대한공간정보학회)
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Study of Correlation Between Flash Flood and GcIUH Parameters using GIS

GIS를 이용한 한계유량과 GcIUH 매개변수간의 상관성분석에 관한 연구

  • Yang, In Tae (Dept. of Civil Engineering, Kangwon National university) ;
  • Park, Kheun (Dept. of Civil Engineering, Kangwon National university)
  • 양인태 (강원대학교 공과대학 토목공학과) ;
  • 박건 (강원대학교 대학원 토목공학과)
  • Received : 2013.08.27
  • Accepted : 2013.11.05
  • Published : 2013.12.31
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Abstract

Concentrated localized torrential rains due to global warming and climate change have resulted in much water damage each year. GIS is used as a tool for predicting the peak-outflows caused by these regional torrential rains in mountainous rivers. However, the research of the resolution of the data is limited, and most of approaches are about hydrological geographic. This paper estimates the flood discharge needed for decision of standard rainfall of automatic rainfall warning system by using GIS with GcIUH model, and establishes the criteria of flash flood warning. It also has analyzed the terrain in river basin, extracted the morphological characteristics parameters of water shed such as stream width, channel slope, channel length, shape factor, and GcIUH parameters, and analyzed the relationship between them.

최근 기상 이변에 따라 단시간에 집중되는 돌발홍수에 의해 해마다 막대한 인적, 물적 피해를 입고 있다. 이러한 국지성호우에 의한 산지하천이나 미소하천에서 첨두유출량을 예측하기 위한 도구로서 GIS를 적용하고 있는 추세이다. 하지만 수문학적 접근이 주를 이루고 있으며 GIS를 이용한 지형분석으로의 접근은 매우 미비한 실정이다. 본 연구에서는 돌발홍수를 발생시키는 강우량을 GIS기법과 GcIUH의 모형을 연계하여 산정하였고, 유역별 GcIUH 매개변수를 추출하여 한계유량에 따른 GcIUH 매개변수간의 상관관계를 분석하였다.

Keywords

References

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