HYMOD模型的參數(shù)不確定性分析
[Abstract]:In this paper, the importance of hydrological model research is introduced through the topic of global water resources crisis, and then the related contents of hydrological model uncertainty are discussed. In the research part of this paper, the data of Xiangxi River basin are selected, and the parameter uncertainty of HYMOD model is analyzed by using the general likelihood uncertainty analysis method. The advantages and disadvantages of the method are discussed on the basis of 90% uncertainty forecast results. Then the general likelihood uncertainty analysis method of multi-criteria likelihood function is selected to analyze the parameter uncertainty of HYMOD model. Using the coverage and interval width of 90% confidence interval of the model, the advantages and disadvantages of the improved general likelihood uncertainty analysis method compared with the traditional general likelihood uncertainty analysis method are discussed. Considering the subjectivity of the selection of multi-criteria likelihood function and the process of weight adjustment, this paper also discusses the influence of the weight change of each likelihood function on the result when the multi-criteria likelihood function is selected as the criterion. At the end of the paper, some prospects are made for the research direction of this research.
【學(xué)位授予單位】:華北電力大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:P334.92
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