Study on Parameter Estimation Method of Nash Instantaneous Unit Line in Ungauged Basin
Nash instantaneous unit line is widely used in flood prediction,but it is easy to be limited by actual measurement.To promote its application in area with no data,literature analysis and statistical methods were used to analyze its historical param-eters in the middle and small basins in China,and its parameter rules were summarized.The key analysis was made to the Yang-tze River basins which were widely used.The MFPM model was applied to the four small and medium-sized basins of the Yel-low River,the Yangtze River and the Huaihe River.NES in the four basins are greater than 0.75.The results show that the rule met the practical requirements and had statistical significance.The application of the formula did not depend on the measured rainfall and runoff data,and it could be extended in the areas without data.
Nash instantaneous unit lineregression analysisparameterssmall and medium-sized basin
万方数据
维普
