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(Article of periodic en Anglais - 2008)

Document title

A transport-distance approach to scaling erosion rates : 2. Sensitivity and evaluation of Mahleran

Authors(s) and Affiliation(s)

WAINWRIGHT J. (1) ; PARSONS A.J. (1) ; MÜLLER E.N. (2) ; BRAZIER R.E. (3) ; POWELL D.M. (4) ; FENTI B. (5) ;
(1) Sheffield Centre for International Drylands Research, Dept. of Geography, University of Sheffield, Sheffield, ROYAUME-UNI
(2) Institut für Geoökologie, Univ., Postdam, ALLEMAGNE
(3) Dept. of Geography, Univ., Exeter, ROYAUME-UNI
(4) Dept. of Geography, Univ., Leicester, ROYAUME-UNI
(5) Queensland Dept. of Natural Resources, Mines and Energy, Indooroopilly, AUSTRALIE

Abstract

In this paper the AA. have undertaken sensitivity analysis and testing of the soil-erosion model MAHLERAN. Sensitivity analysis of the model provides an indication of why it is difficult to scale erosion estimates spatially, in that the spatial variability of sediment fluxes will be a complex function of storm characteristics, slope form (both topographic and microtopographic) and soil composition. Verification of the model has been carried out by comparison with the analytical approach for unconcentrated flows. Model evaluation has been carried out against detailed field measurements from a rainfall-simulation experiment at Walnut Gulch watershed, Tucson, from 1988 to 1995. The tests show that once a parameter optimization is carried out, it is possible to reproduce the spatio-temporal fluxes of sediment and its particle-size characteristics during the simulated event

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2008, vol. 33, no6 [pp. 962-984]

Bibliographic references : 1 p.

Collation : 7 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1623

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2008
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