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| Titel |
Identification and regionalization of dominant runoff processes – a GIS-based and a statistical approach |
| VerfasserIn |
C. Müller, H. Hellebrand, M. Seeger, S. Schobel |
| 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 ; 13, no. 6 ; Nr. 13, no. 6 (2009-06-16), S.779-792 |
| Datensatznummer |
250011896
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| Publikation (Nr.) |
 copernicus.org/hess-13-779-2009.pdf |
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| Zusammenfassung |
| In this study two approaches are presented to identify Dominant Runoff
Processes (DRP) with respect to regionalization. The approaches are a
simplification of an existing method to determine DRP by means of an
extensive field campaign. The first approach combines the permeability of
the substratum, land-use and slope of the basin in a GIS-based analysis. The
second approach makes use of discriminant analysis of the physiographic
characteristics of the basin and links it to the GIS analysis. The results
of the developed approaches are maps, which identify dominant runoff
processes and represent a spatial distribution of the hydrological behaviour
of the soil during prolonged rainfall events. The approaches have been
developed in a micro-scale basin (Germany). An additional meso-scale basin
was introduced in which the two approaches were applied for quality control.
The thus generated maps for the micro-scale basin were compared with an
existing DRP map, which was derived with the existing method. The first
approach showed a resemblance of 79% when compared to this map, whereas
the second approach showed only a resemblance of 51%. The generated maps
for the meso-scale basin were compared to DRP that were determined point
wise according to the existing method. The first approach showed in this
case a resemblance of 81%, whereas the second approach showed a
resemblance of 68%. Therefore, the first approach is preferred to the
second approach when accuracy, data input and calculation time are
concerned. |
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