Rainfall Intensity‐Duration‐Frequency Formula for India
Rainfall Intensity‐Duration‐Frequency Formula for India
复制标题
印度降雨强度-持续时间-频率公式
DOI：
10.1061/(asce)0733-9429(1992)118:2(323
复制
发表时间：
1992
影响因子：
2.4
通讯作者：
R. Garde
中科院分区：
文献类型：
--
作者：
U. C. Kothyari;R. Garde
水利工程规划设计需要建立降雨强度-历时-频率关系。关于降雨强度的信息很少，特别是在短时间内。对印度80个雨量站的数据进行了分析。利用不同水文区与短周期(24小时以下)降水相关的对流单体的一般性质相似的假设，建立了降雨强度、持续时间和频率的一般关系。通过与现有公式的比较和利用不同水文区的数据，验证了所建立的关系式形式的正确性。这里提出的关系被发现比流行的关系产生更符合印度条件的现实结果。在现有数据有限的情况下，检查了这一关系对其他国家数据的适用性。拟议的关系可能会在印度用于设计实践。
A rainfall intensity-duration-frequency relationship is needed for planning and design of water resources projects. Little information is available about rainfall intensities, in particular for short durations. Data from 80 rain-gage stations in India were analyzed. Making use of the assumption that general properties of the convective cells that are associated with short-period (i.e. less than 24 hr) rainfalls are similar in different hydrologic regions, a general relationship for rainfall intensity, duration, and frequency was developed. The correctness of form of the developed relationship was ascertained through its comparison with existing equations and the use of data from different hydrological regions. The relationship proposed herein is found to produce more realistic results for Indian conditions than the ones in vogue. The applicability of this relationship to the data from other countries was checked with the limited data available. The proposed relationship may be used in India for design practices.