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| Titel |
Assessing winter storm flow generation by means of permeability of the lithology and dominating runoff production processes |
| VerfasserIn |
H. Hellebrand, L. Hoffmann, J. Juilleret, L. Pfister |
| 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 ; 11, no. 5 ; Nr. 11, no. 5 (2007-10-17), S.1673-1682 |
| Datensatznummer |
250009476
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| Publikation (Nr.) |
 copernicus.org/hess-11-1673-2007.pdf |
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| Zusammenfassung |
| In this study two approaches are used to predict winter storm flow
coefficients in meso-scale basins (10 km² to 1000 km²) with a view
to regionalization. The winter storm flow coefficient corresponds to the ratio between direct discharge and rainfall. It is
basin specific and supposed to give an integrated response to rainfall. The
two approaches, which used the permeability of the substratum and dominating
runoff generation processes as basin attributes are compared. The study area
is the Rhineland Palatinate and the Grand Duchy of Luxembourg and the study
focuses on the Nahe basin and its 16 sub-basins (Rhineland Palatinate). For
the comparison, three statistical models were derived by means of regression
analysis. The models used the winter storm flow coefficient as the dependent
variable; the independent variables were the permeability of the substratum,
preliminary derived dominating runoff generation processes and a combination
of both. It is demonstrated that the permeability and the preliminary
derived processes carry different layers of information. Cross-validation
and statistical tests were used to determine and evaluate model differences.
The cross-validation resulted in a best model performance for the model that
used both parameters, followed by the model that used the dominant runoff
generation processes. From the statistical tests it was concluded that the
models come from different populations, carrying different information
layers. Analysis of the residuals of the models indicated that the
permeability and runoff generation processes did provide complementary
information. Simple linear models appeared to perform well in describing the
winter storm flow coefficient at the meso-scale when a combination of the
permeability of the substratum and dominating runoff generation processes
served as independent parameters. |
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