TWO-DISTRIBUTION METHOD FOR FLOOD-FREQUENCY ANALYSIS
TWO-DISTRIBUTION METHOD FOR FLOOD-FREQUENCY ANALYSIS
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DOI：
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发表时间：
1972
影响因子：
2.4
通讯作者：
K. Singh;R. A. Sinclair
中科院分区：
文献类型：
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作者：
K. Singh;R. A. Sinclair
本文提出了一种新的洪水频率分析方法--混合分布法。只有两个组件分布的混合物，以适应各种观察到的洪水分布。两个分布的方法进行了测试，从伊利诺伊州的33条河流的年洪水系列。用该方法计算的洪水分布与实测洪水分布的拟合程度优于其它方法，因为计算洪水与实测洪水的绝对偏差的平均值最小。所提出的方法令人满意地匹配的中，高洪水是工程师和水文学家的极大兴趣。为计算机应用制定了客观的方法论。该方法是免费的误差和不确定性，存在时，三阶和高阶矩用于获得估计的成分分布参数。
A new method for flood-frequency analysis is developed using the concept of mixed distributions. A mixture of only two component distributions is shown to fit the various observed flood distributions. The two-distribution method is tested using annual flood series from 33 streams in Illinois. The flood distributions computed by this method fit the observed flood distributions better than other methods in use, insofar as the mean of absolute deviations of the computed floods from those observed is the least. The proposed method satisfactorily matches the medium and high floods which are of great interest to the engineers and hydrologists. An objective methodology has been formulated for computer application. The methodology is free from errors and uncertainties that exist when third and higher order moments are used for obtaining estimates of the component distribution parameters.