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Modelling catchment-scale erosion patterns in the East African Highlands

Soil erosion patterns : evolution, spatio-temporal dynamics and connectivity. Special issue

Auteurs :
VIGIAK, O.
OKOBA, B.O.
STERK, G.
GROENENBERG, S.
HELMING, K.

Description :
This study aimed to evaluate the performance of a simple empirical model (Morgan, Morgan and Finney model, MMF) in predicting spatial patterns of erosion at 2 small catchments in the East African Highlands : Kwalei (Tanzania) and Gikuuri (Kenya). Erosion maps predicted by the MMF model were compared with erosion maps obtained by direct survey. The spatial pattern of erosion predicted by the MMF model was driven by the accumulation of surface runoff, which did not consider the possibility of re-infiltration along the slope. The model predictions could be improved by introducing a more realistic hydrological component for the prediction of surface runoff along the hillslope.


Type de document :
Article de monographie

Source :
Earth surface processes and landforms, issn : 0197-9337, 2005, vol. 30, n°. 2, p. 183-196, nombre de pages : 14, Collation : Illustration, Références bibliographiques : 37 ref.

Date :
2005

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
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