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(Article of periodic en Anglais - 2013)

Document title

Mechanics of interrill erosion with wind-driven rain

Authors(s) and Affiliation(s)

ERPUL G. (1 2) ; GABRIELS D. (3) ; NORTON L.D. (4) ; FLANAGAN D.C. (4) ; HUANG C.-H. (4) ; VISSER S.M. (5) ;
(1) Dep. of Soil Science, Fac. of Agriculture, Univ., Ankara, TURQUIE
(2) Earth Sciences Application and Research Center, Univ., Ankara, TURQUIE
(3) Dep. of Soil Management, Univ., Ghent, BELGIQUE
(4) USDA-ARS National Soil Erosion Research Lab., Purdue Univ., West Lafayette, ETATS-UNIS
(5) Soil Physics and Land Use team, Alterra, UR, Wageningen, PAYS-BAS

Abstract

The vector physics of wind-driven rain (WDR) differs from that of wind-free rain, and the interrill soil detachment equations in the Water Erosion Prediction Project (WEPP) model were not originally developed to deal with this phenomenon. This paper provides an evaluation of the performance of the interrill component of the WEPP model for WDR events. The interrill delivery rates were measured in the wind tunnel facility of the International Center for Eremology (ICE), Ghent University, Belgium with an experimental setup to study different raindrop impact velocity vectors. Synchronized wind and rain simulations with different wind velocities were applied to a test surface placed on windward and leeward slopes. The results suggested that along with the fall trajectory of wind-driven raindrops with a given frequency, raindrop velocity and direction at the point of impact onto the soil surface provided sufficient physical information to improve WEPP sediment delivery rate predictions under WDR

Source

Article of periodic

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

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

Millesime : 2013, vol. 38, no2 [pp. 160-168]

Bibliographic references : 1 p.

Collation : 7 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3280

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