Regionalization of unit hydrograph Parameters: 2. Uncertainty analysis |
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| Authors: | K -C Yeh J -C Yang and Y -K Tung |
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| Institution: | (1) Department of Civil Engineering, National Chiao-Tung University, Hsinchu, Taiwan, Republic of China;(2) Wyoming Water Resources Center & Statistics Department, The University of Wyoming, 82071 Laramie, WY, USA |
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| Abstract: | Hydrologic model parameters obtained from regional regression equations are subject to uncertainty. Consequently, hydrologic
model outputs based on the stochastic parameters are random. This paper presents a systematic analysis of uncertainty associated
with the two parameters, N and K, in Nash's IUH model from different regional regression equations. The uncertainty features
associated with N and K are further incorporated to assess the uncertainty of the resulting IUH. Numerical results indicate
that uncertainty of N and K from the regional regression equations are too significant to be ignored. |
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| Keywords: | Uncertainty analysis unit hydrograph regression analysis probabilistic point estimation methods |
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