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(Article of periodic en Anglais - 2012)

Document title

Field experiments for understanding and quantification of rill erosion processes

published at : Experiments in Earth surface process research

Authors(s) and Affiliation(s)

WIRTZ S. (1) ; SEEGER M. (2) ; RIES J.B. (1) ;
(1) Dep. of Physical Geography, Univ., Trier, ALLEMAGNE
(2) Dep. of Land Degradation and Development, Univ., Wageningen, PAYS-BAS

Abstract

This paper presents the results of rill experiments accomplished in Andalusia (at Negratin, Freila, Salada and Belerda) in September 2008 using a novel experimental set up. Rill cross sections, slope values, flow velocities and sediment concentrations were measured and these values were used to calculate sediment detachment and transport. In rill experiments, 4 different natural rills were flooded with the same experimental setup. Several processes like transport of loose material, erosion, bank failure and knickpoint retreat and the runoff effectiveness showed different and variable intensities. The results suggest that the existing soil erosion equations based on shear forces exerted by the flowing water are not able to describe rill erosion processes satisfactory. Too many different processes with a high spatial and temporal variability are responsible for rill development

Source

Thematical fascicle

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2012, vol. 91 [pp. 21-34]

Bibliographic references : 83 ref.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2010.12.002

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
Refdoc record number (ud4) : 25992410 : Permanent link - XML version
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