| 摘要: |
| 提出了一种河川径流年内分配不均匀性的定量化方法。该方法以年内各时段平均流量的均方差与年平均流量的比值作为径流年内分配的不均匀系数 ,用标准的统计量定量描述径流年内分配的不均匀性 ;通过实例分析了不均匀系数的变化规律 ;探讨了将不均匀系数作为水资源决策指标的可能性。 |
| 关键词: 河川径流,年内分配,不均匀性,不均匀系数 |
| DOI： |
| 分类号:P333.1 |
| 基金项目:国家“九五”科技攻关项目(96-912-05-02) |
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| Quantification of nonuniformity in annual distribution of stream flows |
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FENG Guo zhang 1 LI Ying 2 LI Pei cheng 3
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| Abstract: |
| In this paper a nonuniform coefficient for quantifying the nonuniformity in annual distribution of stream flows is proposed.The nonuniform coefficient is defined as the ratio of mean square deviation of mean interval discharges in a year to mean annual discharge of the year and it is a standard statistics.Variations of the coefficients are analyzed through some measured stream flow data.The possibility of the nonuniform coefficients to be recognized as an index in water resources decision making is described. |
| Key words: stream flow,annual distribution,nonuniformity,nonuniform coefficient |
