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| Titel |
Formation of runoff at the hillslope scale during intense precipitation |
| VerfasserIn |
S. Scherrer, F. Naef, A. O. Faeh, I. Cordery |
| 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. 2 ; Nr. 11, no. 2 (2007-02-23), S.907-922 |
| Datensatznummer |
250009223
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| Publikation (Nr.) |
 copernicus.org/hess-11-907-2007.pdf |
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| Zusammenfassung |
| On 60 m2 hillslope plots, at 18 mainly grassland locations in
Switzerland rain was applied at rates of 50–100 mm/h for between 3 and 6 h.
The generated flows were measured, including overland flow, near
surface and subsurface flow 0.5–1.3 m below the surface. At some
locations less than 2% of the rain flowed down the slope either on or
below the surface, whereas at some others more than 90% of the rain ran
off. At the majority of sites most runoff was overland flow, though at a few
sites subsurface flow, usually via macropores was dominant. Data collected
during each of 48 high intensity sprinkling experiments were used to
distinguish, which processes were dominant in each experiment. Which
dominant and subsidiary processes occurred depended on interactions between
infiltration rate, change in soil water storage and drainage of the soil
water. These attributes were often not directly linked to parameters usually
considered important like vegetation, slope, soil clay content and
antecedent soil moisture. Considering the structure of the soil in
combination with these attributes, process determination was in many cases
fairly straightforward, indicating the possibility of reliably predicting
runoff processes at a site. However, at some sites, effects occurred that
were not easily recognizable and led to surprising results. |
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