Abstract
The objective of this study is to contribute to the reduction of
predictive uncertainty in flows in ungauged basins through application of a
regionalization method to 56 well-gauged basins in the United Kingdom. The
classical approach of regionalization is adopted, where regression relationships
between calibrated hydrological model (HBV) parameters and physical
characteristics of the basin are established and used to estimate parameters for
ungauged basins. The calibration resulted in optimum parameter sets for 48
basins of which 17 were used for the regression analysis. The results of the
regression analysis showed statistically significant relationships for six out of
seven parameters, and hydrologically sensible relationships for only three
parameters. The validation for eight basins revealed that the regionalization
model does not perform satisfactorily. The use of default parameter values
seems to favour the use of regionalized parameter values. Therefore, the
applicability of the classical approach of regionalization for HBV aiming at
simulating all aspects of the hydrograph is questioned
Original language | English |
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Title of host publication | Quantification and Reduction of Predictive Uncertainty for Sustainable Water Resources Management |
Subtitle of host publication | Proceedings of Symposium HS2004 at IUGG2007, Perugia, 2-13 July 2007 |
Editors | Eva Boegh, Harald Kunstmann, Thorsten Wagener, Alan Hall, Luis Bastidas, Stewart Franks, Hoshin Gupta, Dan Rosbjerg, John Schaake |
Place of Publication | Wallingford, UK |
Publisher | IAHS Press |
Pages | 329-337 |
ISBN (Print) | 978-1-90150278-09-1 |
Publication status | Published - 2 Jul 2007 |
Event | IUGG XXIV General Assembly 2007: Earth: Our Changing Planet - Perugia, Italy Duration: 9 Jul 2007 → 13 Jul 2007 Conference number: 24 |
Publication series
Name | IAHS publication |
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Publisher | IAHS Press |
Number | 313 |
ISSN (Print) | 0144-7815 |
Conference
Conference | IUGG XXIV General Assembly 2007 |
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Country/Territory | Italy |
City | Perugia |
Period | 9/07/07 → 13/07/07 |
Keywords
- Monte Carlo analysis
- HBV model
- Validation
- United Kingdom
- multiple objective function
- IR-78696
- regionalization
- Calibration
- METIS-240416
- Uncertainty