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(Article of periodic en Anglais - 2012)

Document title

Estimating changes in effective values of surface detention, depression storage and friction factor at the interrill scale, using a cheap and fast method to mold the soil surface micro-topography

published at : Experiments in Earth surface process research

Authors(s) and Affiliation(s)

ANTOINE M. (1) ; CHALON C. (1) ; DARBOUX F. (2) ; JAVAUX M. (1) ; BIELDERS C. (1) ;
(1) Earth and Life Inst., Univ. catholique de Louvain (UCL), Louvain-la-Neuve, BELGIQUE
(2) INRA, UR 0272 Science du sol, Centre de recherche, Orléans, FRANCE

Abstract

Surface detention and depression storage constitute the 2 conceptual storages of water at the soil surface and depend on the spatial configuration of the micro-topography. To be able to measure directly those storages and investigate how they evolve with time and precipitation, it is necessary to isolate the impact of the micro-topography from the infiltration. Therefore the AA. developed a fast and cheap in-situ molding method that combines alginate, plaster and lacquer. Both the surface of a specific soil and its artificial reproduction were measured with a laser scanner in order to assess the quality of the molding method. This novel molding method was applied to get 10 footprints of the micro-topography of a loamy bare soil, at different levels of cumulative rainfall erosivity value (R), starting with a tilled soil, and letting it evolve with natural rain events. The AA. finally parametrized surface detention by an effective friction factor, using a classical equation for an equivalent laminar sheet flow

Source

Thematical fascicle

published at : Catena / ISSN 0341-8162

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

Millesime : 2012, vol. 91 [pp. 10-20]

Bibliographic references : 43 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.2010.11.003

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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