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Maximum entropy-Gumbel-Hougaard copula method for simulation of monthly streamflow in Xiangxi river, China
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  • 作者:X. M. Kong ; G. H. Huang ; Y. R. Fan ; Y. P. Li
  • 关键词:Maximum entropy ; Gumbel ; Hougaard copula ; Monthly streamflow ; Xiangxi river ; Conjugate gradient
  • 刊名:Stochastic Environmental Research and Risk Assessment (SERRA)
  • 出版年:2015
  • 出版时间:March 2015
  • 年:2015
  • 卷:29
  • 期:3
  • 页码:833-846
  • 全文大小:3,921 KB
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    10. Dutta D, Welsh WD, Vaze J et al (2012) A comparative evaluation of short-term streamflow forecasting using time series analysis and rainfall-runoff models in water source. Water Resour Manage 26(15):4397-415. doi:10.1007/s11269-012-0151-9 CrossRef
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  • 刊物类别:Earth and Environmental Science
  • 刊物主题:Environment
    Mathematical Applications in Environmental Science
    Mathematical Applications in Geosciences
    Probability Theory and Stochastic Processes
    Statistics for Engineering, Physics, Computer Science, Chemistry and Geosciences
    Numerical and Computational Methods in Engineering
    Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution
  • 出版者:Springer Berlin / Heidelberg
  • ISSN:1436-3259
文摘
A maximum entropy-Gumbel-Hougaard copula (MEGHC) method has been proposed for monthly streamflow simulation. The marginal distributions of monthly streamflows are estimated through the maximum entropy (ME) method with the first four non-central moments (i.e. mean, standard deviation, skewness and kurtosis) being the constraints. The Lagrange multipliers in ME-based marginal distributions are determined using the conjugate gradient (CG) method which is of superlinear convergence, simple recurrence formula and less calculation. Then the joint distributions of two adjacent monthly streamflows are constructed using the Gumbel-Hougaard copula (GHC) method. The developed MEGHC method has been applied for monthly streamflow simulation in Xiangxi river, China. The goodness-of-fit statistical tests, consisting of K–S test, A–D test, RMSE and Rosenblatt transformation with Cramér von Mises statistic, show that the MEGHC method can reflect dependence structure in adjacent monthly streamflows of Xiangxi river, China. Comparison between simulated streamflow generated by MEGHC and observations indicates the satisfactory performance of MEGHC with small relative errors.

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