右截取Gamma分布在径流频率计算中的应用
首发时间:2012-11-13
摘要:应用截取分布研究径流枯水段的频率计算。采用概率论和统计水文学原理,推导了右截取Gamma分布序列和全序列一阶原点矩和二阶中心距的关系式和参数计算公式,给出了相应的频率曲线计算步骤。以渭河流域北洛河状头站1937-2006年年平均流量序列为例,进行径流枯水段的频率计算。表明文中的计算公式是合理的,借助现有的统计计算函数包,不难获得相应设计频率的设计水文值。文中水文序列频率计算具有严格的数学推导,以期为合理地进行水文序列频率计算提供理论指导。
关键词: 关右截取Gamma分布 频率分析 矩法
For information in English, please click here
Runoff Frequency Analysis Using Right Truncated Gamma Distribution
Abstract:The principle and applications of lower runoff data using right truncated Gamma distribution are presented. Employing probability theory and statistical hydrology, the authors derivate the formulas of the first and second moments and parameters estimation and corresponding procedures are given. Annual average streamflow from Zhang Tou gauging station during 1937-2006 in Bei luohe River of Weihe Basin, China, was used to illustrate these methods. The results show that the formulas are resalable. Using the statistical computation functions, the design hydrological values of the design frequency are easy to obtain. It also indicates that the formulas in this paper can provide some basic theories for hydrologic frequency analysis.
Keywords: right truncated gamma distribution frequency analysis moments method
论文图表:
引用
No.****
同行评议
共计0人参与
勘误表
右截取Gamma分布在径流频率计算中的应用
评论
全部评论0/1000