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(Article of periodic en Anglais - 2008)

Document title

Estimation of surface roughness (Zo) over a stabilizing coastal dune field based on vegetation and topography

Authors(s) and Affiliation(s)

LEVIN N. (1) ; BEN-DOR E. (1) ; KIDRON G.J. (1) ; YAAKOV Y. (1) ;
(1) Dept. of Geography and Human Environment, Univ., Tel-Aviv, ISRAEL

Abstract

In this study the AA. aimed at quantifying the effects of vegetation cover and topography on surface roughness over a stabilizing dune field on the southern coast of Israel. 46 wind measurements were made at various distances from the coastline, ranging from 10 to 2800 m, and Zo values were calculated from the wind measurements based on the ratio between the wind gust and the average wind speed. The AA. estimated vegetation cover using the soil adjusted vegetation index (SAVI) from Landsat satellite images for the upwind sector at various lengths, ranging from 15 to 400 m, and based on digital elevation models and differential GPS field measurements they calculated the topographic variable of the relative heights of the stations. Using these variables the AA. were able to create a map of estimated Zo values. Such maps provide a better understanding of the spatial variability in both wind speed and sand movement over coastal dune areas

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, no10 [pp. 1520-1541]

Bibliographic references : 2 p.

Collation : 11 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.1621

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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