无定河流域暴雨极值分布线型初探 |
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引用本文:李蓉蓉,黄领梅.无定河流域暴雨极值分布线型初探[J].电网与清洁能源,2016,32(12):126~129 |
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基金项目:基金项目:国家自然科学基金项目(51679184);陕西省水利厅项目(2016slkj-12)。 |
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中文摘要:摘要: 利用广义极值(GEV)分布和皮尔逊Ⅲ型(P-Ⅲ)分布对无定河流域年最大12 h雨量系列进行参数估计与适线,经过方差检验、参数与设计值比较得出:P-Ⅲ分布适用于无定河流域年最大12 h雨量系列,GEV分布在其参数与P-Ⅲ分布参数接近情况下适用。研究结果为黄土高原流域的暴雨极值分布提供参考。 |
中文关键词:关键词: 广义极值分布 皮尔逊Ⅲ型分布 无定河流域 |
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A Preliminary Study on the Storm Extreme Value Distribution in the Wuding River Watershed |
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Abstract:ABSTRACT: In this paper, the generalized extreme value distribution and Pearson-Ⅲ distribution are used to estimate the statistical parameters and fit the frequency curves of the annual maximum 12 h rainfall series from the Wuding River watershed. According to the variance test and the comparison between the statistical parameters and design values, it is found that the Pearson-Ⅲ distribution is applicable to the series while the GEV distribution is applicable when the statistical parame-ters of the series are close to those from the Pearson-Ⅲ distri-bution. The results can serve as a reference in studying the storm extreme value distribution in the Loess Plateau. |
keywords:KEY WORDS:generalized extreme value distribution Pear-son-Ⅲ distribution Wuding River watershed |
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