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(Article of periodic en Anglais - 2013)

Document title

Reynolds stress and sand transport over a foredune

Authors(s) and Affiliation(s)

CHAPMAN C. (1) ; WALKER I.J. (1) ; HESP P.A. (2) ; BAUER B.O. (3) ; DAVIDSON-ARNOTT R.G.D. (4) ; OLLERHEAD J. (5) ;
(1) Dept. of Geography, Univ., Victoria, CANADA
(2) Dept. of Geography & Anthropology, Louisiana State Univ., Baton Rouge, ETATS-UNIS
(3) Earth and Environmental Sciences & Geography, Univ. of British Columbia, Kelowna, CANADA
(4) Dept. of Geography, Univ., Guelph, CANADA
(5) Dept. of Geography, Mount Allison Univ., Sackville, CANADA

Abstract

The aim of this paper is to quantify and interpret measurements of turbulent airflow properties (RS distributions and quadrant activities) in relation to high frequency sand transport activity over a vegetated foredune. The study site is located on a stretch of foredune within the Greenwich Dunes on the north-eastern shore of Prince edward Island. The magnitudes of RS and sand transport varied somewhat independently over the dune as controlled by topographic forcing effects on flow dynamics. A "flow exuberance effect" was evident. This exuberance effect was not expressed, however, in sand transport patterns. It is shown that the relationship between sand transport and RS is not as straightforward as in traditional equations that relate flux to stress in increasing fashion. Thus, large amounts of transport can occur with small RS. Turbulent kinetic energy or Reynolds normal stresses may provide stronger associations with sand transport over dunes

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, no14 [pp. 1735-1747]

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.3428

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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