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(Article of periodic en Anglais - 2013)

Document title

Do deterministic sediment detachment and transport equations adequately represent the process-interactions in eroding rills ? An experimental field study

Authors(s) and Affiliation(s)

WIRTZ S. (1) ; SEEGER M. (1) ; REMKE A. (1) ; WENGEL R. (1) ; WAGNER J.-F. (1) ; RIES J.B. (1) ;
(1) Dep. of Physical Geography, Univ., Trier, ALLEMAGNE

Abstract

This paper tackles 2 main questions by linking observations, determination of hydraulic parameters and measurement of sediment transport with the formulae used in soil erosion models. First, do constant shear stress values in different rills with constant soil parameters result in the same soil detachment values? Secondly, deterministic soil erosion models make the assumption that there is a relationship (often further assumed to be linear) between shear stress and soil detachment; is this suitable for representing real erosion process combinations in natural rills? The results of this study strongly suggested that the model concept of most physical based soil erosion models is inadequate for modeling rill erosion processes. Measured total rill erosion rates were the sum of erosion rates caused by a combination of different soil erosion processes with different spatial and temporal distribution. This combination cannot be described by a single equation

Source

Article of periodic

published at : Catena / ISSN 0341-8162

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

Millesime : 2013, vol. 101 [pp. 61-78]

Bibliographic references : 2 p.

Collation : 11 fig., 7 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2012.10.003

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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