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(Article of periodic en Anglais - 2010)

Document title

Accounting for uncertainty in DEMs from repeat topographic surveys : improved sediment budgets

Authors(s) and Affiliation(s)

WHEATON J.M. (1) ; BRASINGTON J. (2) ; DARBY S.E. (3) ; SEAR D.A. (3) ;
(1) Dep. of Watershed Sciences, Utah Sate Univ., Logan, ETATS-UNIS
(2) Inst. of Geography and Earth Sciences, Univ. of Wales, Aberystwyth, ROYAUME-UNI
(3) School of Geography, Univ., Southampton, ROYAUME-UNI

Abstract

The aim of this paper is to present a new technique that allows more robust estimation of DEM quality and its influence on sediment budgets derived from DEM differencing. The novel contributions set out here are : 1) a new technique for estimating the magnitude of DEM uncertainty in a spatially variable way using fuzzy set theory; and 2) a technique for discriminating DEM of Difference DoD uncertainty on the basis of the spatial coherence of erosion and deposition units using Bayes Theorem. The application of these new techniques is illustrated with 5 yeats of high resolution data (GPS surveys) from a braided reach of the River Feshie in the Highlands of Scotland

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2010, vol. 35, no2 [pp. 136-156]

Bibliographic references : 1,5 p.

Collation : 12 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1886

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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