한국농공학회:학술대회논문집 (Proceedings of the Korean Society of Agricultural Engineers Conference)
- 한국농공학회 2003년도 학술발표논문집
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- Pages.475-478
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- 2003
Log-Pearson Type III 분포형에 의한 강우의 점빈도 및 지역빈도 비교분석
Comparative Analysis of regional and at-site frequency for the design rainfall by Log-Pearson Type III Distribution
- 발행 : 2003.10.31
초록
This study was conducted to compare the design rainfall derived by the at-site and regional frequency analysis based on the regionalization of the precipitation. The regional and at-site design rainfalls were calculated by Log-Pearson type III distribution using Indirect Methods of Moments(WRC). The regional and at-site analysis for the design rainfall were tested by Monte Carlo simulation. Relative root-mean-square error(RRMSE), Relative bias(RBIAS) and Relative reduction(RR) in RRMSE were computed and compared between design rainfalls resulted from observed and simulated data using the regional and at-site analysis. It was shown that the regional analysis procedure can substantially reduce the RRMSE, RBIAS in comparison with those of at-site analysis. Consequently, optimal design rainfalls following the regions and consecutive durations were derived by the regional frequency analysis.
키워드