(Article of periodic en Anglais - 2013)

Document title

The application of COSI-Corr to determine dune system dynamics in the southern Namib Desert using ASTER data

Authors(s) and Affiliation(s)

(1) Center of Earth and Planetary Studies, Smithsonian Inst., National Air and Space Museum, Washington, ETATS-UNIS
(2) Division of Earth and Ecosystem Sciences, Desert Research Inst., Reno, ETATS-UNIS


Several areas of barchan and transverse dunes transport sand along definite pathways, feeding the southern part of the Namib Sand Sea from beaches and deflationary basins in the Sperrgebiet. The AA. give a detailed description of the pre- and post-processing routines used for their Coregistration of Optically Sensed Images and Correlation (COSI-Corr) analysis, and they evaluate the sub-pixel dune migration results at the dune and dune-field scales. The best set of parameters for the application of the algorithm was systematically derived, resulting in methodological refinements of the cross-correlation windows. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) sensor aboard the Terra satellite provided the remote sensing imagery. The AA. suggest that analysis and interpretation of COSI-Corr output from ASTER data is more valuable if combined with other image analysis techniques, such as manual digitization of dunes in a geographic information system (GIS), processing of write memory function insertion (WMFI) imagery and multispectral image (MSI) analysis of composition.


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, no9 [pp. 1004-1019]

Bibliographic references : 1 p.

Collation : 12 fig., 6 tabl.



INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3383

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