| 黄土高原降雨雨滴动能的分布律 |
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| 引用本文： | 蔡丽君,王国栋,张社奇.黄土高原降雨雨滴动能的分布律[J].水土保持通报,2003,23(4):28-29,54. |
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| 作者姓名： | 蔡丽君 王国栋 张社奇 |
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| 作者单位： | 西北农林科技大学,生命科学学院,陕西,杨凌,712100 |
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| 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BestA．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。
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| 关 键 词： | 降雨动能 韦伯分布 降雨雨型 |
| 文章编号： | 1000-288X(2003)04-0028-02 |
| 收稿时间： | 5/6/2003 12:00:00 AM |
| 修稿时间： | 2003/6/20 0:00:00 |
Kinetic Energy Distribution of Raindrops on Loess Plateau |
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| CAI Li-jun,WANG Guo-dong and ZHANG She-qi.Kinetic Energy Distribution of Raindrops on Loess Plateau[J].Bulletin of Soil and Water Conservation,2003,23(4):28-29,54. |
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| Authors: | CAI Li-jun WANG Guo-dong and ZHANG She-qi |
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| Institution: | Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, Shaanxi Province, China;Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, Shaanxi Province, China;Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, Shaanxi Province, China |
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| 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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| Keywords: | rain kinetic energy Weibull distribution raindrop type |
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