Stochastic storm transposition coupled with rainfall-runoff modeling for estimation of exceedance probabilities of design floods

被引:41
作者
Franchini, M [1 ]
Helmlinger, KR [1 ]
Foufoula-Georgiou, E [1 ]
Todini, E [1 ]
机构
[1] UNIV MINNESOTA, ST ANTHONY FALLS HYDRAUL LAB, MINNEAPOLIS, MN 55414 USA
基金
美国国家科学基金会;
关键词
D O I
10.1016/S0022-1694(96)80022-9
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The stochastic storm transposition (SST) technique has been developed and evaluated in previous studies for the estimation of exceedance probabilities of extreme precipitation depths. In this study it is extended to the estimation of exceedance probabilities of extreme design floods, The link between storms and flood peaks is provided by a rainfall-runoff transformation and stochastic descriptions of antecedent moisture conditions and storm depth temporal distributions. Cumulative average catchment depths produced by the SST approach have been converted to a range of possible flood peak values using a rainfall-runoff model (the ARNO model) and a probabilistic disaggregation scheme of cumulative storm depths to hourly data. The analysis has been repeated for a range of fixed antecedent moisture conditions. The probabilities of exceedance of the produced flood peaks have been estimated and compared to highlight the effect of antecendent moisture conditions on the magnitude and frequency of produced floods as compared with the magnitude and frequency of the corresponding average catchment depths.
引用
收藏
页码:511 / 532
页数:22
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