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- W1969078001 abstract "본 연구는 실측자료가 확보된 중규모 하천유역에서 최대 첨두유량을 발생시키는 설계강우의 시간분포모형을 밝혀내고, 결정된 시간분포모형을 바탕으로 하여 유역특성과 임계지속기간의 관계를 규명하는 것이다. 50-5,000<TEX>$textrm{km}^2$</TEX>의 44개 유역을 통하여 수문분석을 실시하였으며, SCS 유효우량 산정방법으로 결정된 유효우량을 사용하여 최대 첨두유량을 발생시키는 시간분포모형은 Huff의 4분위 시간분포모형으로 나타났다. 유역면적 50-600<TEX>$textrm{km}^2$</TEX>인 유역에서는 24시간 강우지속기간의 첨두유량과 임계지속기간의 첨두유량은 유사한 값을 보이며, 유역면적 600-5,000<TEX>$textrm{km}^2$</TEX>인 유역에서는 48시간 강우지속기간의 첨두유량과 임계지속기간의 첨두유량이 유사한 값을 보였다. AMC III 조건의 유효우량에 대하여 높은 상관성을 지니는 유역면적과 임계지속기간의 관계식을 유도하였으며, 유역면적 50-5,000<TEX>$textrm{km}^2$</TEX>이 중규모 하천유역에서 임계지속기간을 결정하는데 유용한 식으로 이용될 수 있을 것으로 판단된다. 또한, 단위도 특성치를 이용한 무차원 회귀식을 유도하였다. This study is to propose the temporal pattern of design rainfall which causes maximum peak discharge, and to analyze the relation of catchment characteristics and critical durations for gauged midsize catchment. Hydrologic analysis has done over the 44 midsize catchments with 50-5,000<TEX>$textrm{km}^2$</TEX>. The type of temporal pattern of design rainfall which causes maximum peak discharge has resulted in Huff's 4 quartile distribution method for effective rainfall(AMC III) The peak discharges of 24hr rainfall duration are similar to those of critical duration for 50-600<TEX>$textrm{km}^2$</TEX>, and the peak discharges of 48hr rainfall duration are similar to those of critical duration for 600-5,000<TEX>$textrm{km}^2$</TEX>. Therefore, if the proper rainfall intensity formula is selected, 24hr or 48hr rainfall duration may be regarded as the critical duration of midsize catchment. A simple regression equation is derived by using a catchment area and critical duration with high correlation for the case of effective rainfall(AMC III). Therefore, it can be used to determine the critical duration of ungauged catchment with 50-5,000<TEX>$textrm{km}^2$</TEX>. Also, dimensionless regression equation is derived by using characteristic values of unit hydrograph." @default.
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- W1969078001 date "2004-09-01" @default.
- W1969078001 modified "2023-09-26" @default.
- W1969078001 title "A Study on the Critical Duration of Design Rainfall in Midsize Catchment" @default.
- W1969078001 cites W2012912804 @default.
- W1969078001 doi "https://doi.org/10.3741/jkwra.2004.37.9.695" @default.
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