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(Article of periodic en Anglais - 2013)

Document title

Helga's Dune : 40 years of dune dynamics in the Namib Desert

published at : Southern African geomorphology : looking back, moving forward

Authors(s) and Affiliation(s)

BESLER H. (1) ; LANCASTER N. (2) ; BRISTOW C. (3) ; HENSCHEL J. (4) ; LIVINGSTONE I. (5) ; SEELY M. (4 6) ; WHITE K. (7) ;
(1) Dept. of Geography, Univ., Cologne, ALLEMAGNE
(2) Desert Research Institute, Reno, ETATS-UNIS
(3) Birbeck, Univ., London, ROYAUME-UNI
(4) Gobabeb Research and Training Centre, Walvis Bay, NAMIBIE
(5) School of Science and Technology, Univ., Northampton, ROYAUME-UNI
(6) Desert Research Foundation of Namibia, Windhoek, NAMIBIE
(7) Dept. of Geography and Environmental Science, Univ., Reading, ROYAUME-UNI

Abstract

The dynamics of a small linear dune on the northern margin of the Namib Sand Sea, in the area south of Gobabeb, have been monitored using erosion pins placed at the dune tip since 1969. GPS measurements of these pins enabled estimation of the rates of advance and lateral migration of the dune. Rates of advance and lateral movement varied over the period of monitoring, 1969-2012, with a decrease in rates of advance by a factor of 50%, but an increase in the rate of lateral movement. Changes in dune behavior appear to be related to changes in wind regime and the vegetation cover of the interdune area, as a result of increased rainfall in recent years. This study demonstrates the dynamic nature of the tip of this dune and its sensitivity to changes in winds and sand supply

Source

Thematical fascicle

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 2013, vol. 95, no 4 [pp. 361-368]

Bibliographic references : 21 ref.

Collation : fig., tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 2704 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/geoa.12013

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