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| Titel |
Digital terrain analysis of the Haute-Mentue catchment an scale effect for hydrological modelling with TOPMODEL |
| VerfasserIn |
C. Higy, A. Musy |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 4, no. 2 ; Nr. 4, no. 2, S.225-237 |
| Datensatznummer |
250001630
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| Publikation (Nr.) |
 copernicus.org/hess-4-225-2000.pdf |
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| Zusammenfassung |
| It is widely recognised that topography plays an important role in the generation
of runoff. The scale of a digital elevation model has been found to have some impacts on the
results of hydrological modelling in several studies. In particular it has been shown that the
representation of the statistical distribution of the topographic index used by TOPMODEL is
sensitive to the scale of the digital terrain model. The objectives of this study are to
develop an analysis of the topography and scale effects for the Haute-Mentue catchment and
to test the role of different spatial resolution on parameter calibration. The major result
is that the spatial scale is important for the parameter values, but not determinant for the
modelling results if a pertinent methodology is adopted for the determination of digital
watershed representation.
Keywords: digital elevation model, topographic index, scale problems, TOPMODEL |
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