HYMOD模型的參數(shù)不確定性分析
發(fā)布時間:2018-09-07 14:28
【摘要】:本文首先通過全球水資源危機的話題引出水文模型研究的重要性,然后重點討論了水文模型不確定性的相關內(nèi)容。 本論文的研究部分選取香溪河流域數(shù)據(jù),用普似然不確定性分析方法分析HYMOD模型參數(shù)不確定性,在得到90%不確定性預報結果的基礎上,討論了方法的優(yōu)缺點,然后選取多準則似然函數(shù)的普似然不確定性分析方法對HYMOD模型進行參數(shù)不確定性分析。用模型90%置信區(qū)間的覆蓋率和區(qū)間寬度討論改進型普似然不確定性分析方法相對傳統(tǒng)普似然不確定性分析方法的優(yōu)勢和不足。在考慮到多準則似然函數(shù)的選取和權重調節(jié)過程中的主觀性,文章還討論了在選取多準則似然函數(shù)作為判據(jù)時,各似然函數(shù)間權重變化對結果的影響。 文章最后對本研究相關內(nèi)容將來研究方向做了一些展望。
[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.
【學位授予單位】:華北電力大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:P334.92
本文編號:2228529
[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.
【學位授予單位】:華北電力大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:P334.92
【參考文獻】
相關期刊論文 前10條
1 宋曉猛;占車生;孔凡哲;夏軍;;大尺度水循環(huán)模擬系統(tǒng)不確定性研究進展[J];地理學報;2011年03期
2 謝軍安,朱軍(,欒世英;全球水資源危機與可持續(xù)發(fā)展[J];石家莊經(jīng)濟學院學報;1998年02期
3 黃國如;解河海;;基于GLUE方法的流域水文模型的不確定性分析[J];華南理工大學學報(自然科學版);2007年03期
4 蔡華,龍翔,舒暢,姜鐵兵;模糊綜合決策專家系統(tǒng)在洪水預報中的應用[J];華中電力;2000年04期
5 何長高;董增川;陳衛(wèi)賓;;流域水文模型研究綜述[J];江西水利科技;2008年01期
6 王宇暉;雷曉輝;蔣云鐘;宋新山;;Hymod模型參數(shù)敏感性分析和多目標優(yōu)化[J];水電能源科學;2010年11期
7 劉艷麗;王國利;周惠成;;洪水預報不確定性分析及其在水庫調度決策中的應用研究[J];水力發(fā)電學報;2010年01期
8 衛(wèi)曉婧;熊立華;;改進的GLUE方法在水文模型不確定性研究中的應用[J];水利水電快報;2008年06期
9 衛(wèi)曉婧;熊立華;萬民;劉攀;;融合馬爾科夫鏈-蒙特卡洛算法的改進通用似然不確定性估計方法在流域水文模型中的應用[J];水利學報;2009年04期
10 徐宗學;程磊;;分布式水文模型研究與應用進展[J];水利學報;2010年09期
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