Kinetic Energy Distribution of Raindrops on Loess Plateau

CAI Li-jun; WANG Guo-dong; ZHANG She-qi

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Kinetic Energy Distribution of Raindrops on Loess Plateau

- Kinetic Energy Distribution of Raindrops on Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 22, Issue 4, Pages: 28-29(2003)
- 作者机构：
  
  西北农林科技大学, 陕西杨凌,712100
- 作者简介：
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- DOI：
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- Published：2003
- 稿件说明：
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CAI Li-jun, WANG Guo-dong, ZHANG She-qi. Kinetic Energy Distribution of Raindrops on Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2003, 22(4): 28-29.
DOI：

CAI Li-jun, WANG Guo-dong, ZHANG She-qi. Kinetic Energy Distribution of Raindrops on Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2003, 22(4): 28-29. DOI：

摘要

降雨强度、雨滴速度、雨滴动能等参量与土壤侵蚀关系密切。根据Best A.C.提出的雨滴直径分布函数

从理论上导出了符合黄土高原实际情况的雨滴动能分布密度和分布函数

它们都符合不同参数的韦伯分布。不同雨型、雨强条件下的雨滴速度和降雨总动能的理论计算值与前人的实测值吻合较好

表明韦伯分布的确可用于描述雨滴动能分布

其参数确定也是恰当的。因此可直接由降雨强度和雨型决定的雨滴动能分布经积分得出降雨总动能

而无须通过经验回归模型(通常存在地域差异)求取降雨总动能。

Abstract

Based on the distribution function of raindrop diameters delivered by Best A.C.

a new theoretical distribution density function for raindrop kinetic energy was developed

which obeyed the Weibull distribution.The study showed that the Weibull distribution could be excellently used in describing rain kinetic energy distribution.Thus

it is not necessary that the total rain kinetic energy was calculated by various empirical formulas

rather

it should be obtained through calculus straightforwardly.

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