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(Article of periodic en Anglais - 2013)

Document title

Aeolian sediment transport and morphologic change on a managed and an unmanaged foredune

Authors(s) and Affiliation(s)

JACKSON N.I. (1) ; NORDSTROM K.E. (2) ;
(1) Dep. of Chemistry and Environmental Science, New Jersey Inst. of Technology, Newark, ETATS-UNIS
(2) Inst. of marine and Coastal Sciences, Rutgers Univ., New Brunswick, ETATS-UNIS

Abstract

Sediment transport and short-term morphologic change were evaluated at a site where sand fences are deployed and the beach is raked (Managed Site) and a site where these human adjustments are not practiced (Unmanaged Site). Data were gathered across the seaward portion of a low foredune when winds blew nearly shore-normal at mean speeds. Data from traps revealed sediment transport rates at unvegetated portions of the foredune crest were greater than on the backshore due to onshore decreases in surface moisture and speed-up of the wind passing over the foredune. The Unmanaged Site had deposition at the dune toe, erosion at mid-slope, and deposition at the crest. Deposition occurred at mid-slope on the Managed Site near a partially buried fence. Deposition at partially buried wrack on the upper backshore and dune toe at the Unmanaged Site was about twice as great as deposition in this zone at the Managed Site. Evaluation of alternative configurations of fences and strategies for managing wrack is required to better determine the ways that humans modify foredunes

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, no4 [pp. 413-420]

Bibliographic references : 1 p.

Collation : 6 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3333

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