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http://dx.doi.org/10.3741/JKWRA.2003.36.3.399

Assessment of Uncertainty for Applying Nash's Model Using the Hydrologic Similarity of Basins  

Seong, Kee-Won (Dept. of Civil Engrg., Konkuk Univ.)
Publication Information
Journal of Korea Water Resources Association / v.36, no.3, 2003 , pp. 399-411 More about this Journal
Abstract
An approach determining a confidence interval of Nash's observed mean instantaneous unit hydrograph is developed. In the approach, both two parameters are treated as correlated gaussian random variables based on the theory of Box-Cox transformation and the regional similarity relation, so that linear statistical parameter estimation is possible. A parametric bootstrap method is adopted to give the confidence interval of the mean observed hydrograph. The proposed methodology is also applicable to estimate the parameters of Nash's model for un-gauged basins. An application to a watershed has shown that the proposed approach is adequate to assess the uncertainty of the Nash's hydrograph and to evaluate parameters for un-gauged basins.
Keywords
Nash's model; Box-Cox transformation; bootstrap; stochastic IUH; ungauged basinn;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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