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(Article of periodic en Anglais - 2010)

Document title

A new approach for dealing with depressions in digital elevation models when calculating flow accumulation values

Authors(s) and Affiliation(s)

ARNOLD N. (1) ;
(1) Scott Polar Research Inst., Dept. of Geography, Univ., Cambridge, ROYAUME-UNI

Abstract

In this paper, some of the main flow accumulation algorithms and some existing techniques for dealing with closed depressions in DEMs are reviewed. A new algorithm is presented which assumes that such depressions are real features in the landscape, and which allows them to ‘fill’ and then ‘overflow’ into downstream areas within the DEM. Examples with a synthetic and two real DEMs suggest that, at least in these cases, the assumption that depressions are real is justified. These results also suggest that determining the size distribution for depressions within a DEM could form the basis for identifying whether artifact depressions are a problem in individual DEMs

Source

Article of periodic

published at : Progress in physical geography / ISSN 0309-1333 / CODEN PPGEEC

Editor : Sage Publications, London - ROYAUME-UNI (1977)

Millesime : 2010, vol. 34, no6 [pp. 781-809]

Bibliographic references : 43 ref.

Collation : 10 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 14648 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1177/0309133310384542

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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