The characteristics of probability distribution of groundwater model output based on sensitivity analysis
The characteristics of probability distribution of groundwater model output based on sensitivity analysis
复制标题
基于敏感性分析的地下水模型输出概率分布特征
DOI:
10.2166/hydro.2013.106
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发表时间:
2014
影响因子:
2.7
通讯作者:
Zhu XB
中科院分区:
文献类型:
--
作者:
Zeng XK;Wu JC;Wang D;Zhu XB
The probability distribution of groundwater model output is the direct product of modeling uncertainty. In this work, we aim to analyze the probability distribution of groundwater model outputs (groundwater level series and budget terms) based on sensitivity analysis. In addition, two sources of uncertainties are considered in this study: (1) the probability distribution of model’s input parameters; (2) the spatial position of observation point. Based on a synthetical groundwater model, the probability distributions of model outputs are identified by frequency analysis. The sensitivity of output’s distribution is analyzed by stepwise regression analysis, mutual entropy analysis, and classification tree analysis methods. Moreover, the key uncertainty variables influencing the mean, variance, and the category of probability distributions of groundwater outputs are identified and compared. Results show that mutual entropy analysis is more general for identifying multiple influencing factors which have a similar correlation structure with output variable than a stepwise regression method. Classification tree analysis is an effective method for analyzing the key driving factors in a classification output system.
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影响因子:
2.6
作者:
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通讯作者:
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影响因子:
6.4
作者:
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2005
期刊:
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DOI:
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发表时间:
2011-11
期刊:
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影响因子:
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作者:
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通讯作者:
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DOI:
10.1016/s0951-8320(02)00222-3
发表时间:
2003-02
期刊:
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影响因子:
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作者:
Srikanta Mishra;N. Deeds;B. S. RamaRao
通讯作者:
Srikanta Mishra;N. Deeds;B. S. RamaRao