Runoff Probability, Storm Depth, and Curve Numbers
Runoff Probability, Storm Depth, and Curve Numbers
复制标题
DOI：
10.1061/(asce)0733-9437(1985)111:4(330
复制
发表时间：
1985-12
期刊：
影响因子：
--
通讯作者：
R. Hawkins;A. Hjelmfelt;A. Zevenbergen
中科院分区：
文献类型：
--
作者：
R. Hawkins;A. Hjelmfelt;A. Zevenbergen
利用已有的前期水分条件（AMC）曲线数关系，推导出AMC I和AMC III的径流-径流通用表达式。事件径流超过零的概率分布被发现是对数正态分布。相对风暴大小则建议根据P/S比值来定义，其中“大”风暴的P/S>0.46，此时90%的暴雨将产生径流。本文讨论了用全径流资料确定CN值时所遇到的一些问题。
Using existing antecedent moisture condition (AMC) Curve Number relationships, a general expression of rainfall-runoff is developed for AMC I and AMC III. The probability distribution of event runoff exceeding zero is found to be lognormal. Relative storm size is then proposed to be defined on the ratio P/S, where a “large” storm has P/S>0.46, when 90% of all rainstorms will create runoff. Consequent problems arising in the definition of CN from rainfall-runoff data are discussed.