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(Article of periodic en Anglais - 2009)

Document title

Historical dune pattern dynamics : white sands dune field, New Mexico

Authors(s) and Affiliation(s)

RACHAL D.M. (1) ; DUGAS D.P. (1) ;
(1) Dep. of Geography, New Mexico State Univ., Las Cruces, ETATS-UNIS

Abstract

Historical repeat aerial photography was used to quantify temporal changes in the crescentic dune pattern at the White Sands Dune Field. A Geographic Information System (GIS) was used to digitize 14,000 dune crests from the combined photoset. Crest length, sinuosity, spacing, orientation, transport vector, and defect density were calculated from these measurements and statistically analyzed. The pattern analysis revealed that crest length, sinuosity, and defect density were highly variable pattern elements over a 60-year period. Defect density calculations revealed that the dune field is trending to a possible state of disorganization. This trend was temporarily interrupted in 1985 by a massive period of organization. The temporal variations in these pattern elements and the episodic organizational event in 1985 were likely climatically induced

Source

Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2009, vol. 30, no1 [pp. 64-78]

Bibliographic references : 2 p.

Collation : 9 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.247/0272-3646.30.1.64

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