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(Article of periodic en Anglais - 2010)

Document title

High resolution quantification of gully erosion in upland peatlands at the landscape scale

Authors(s) and Affiliation(s)

EVANS M. (1) ; LINDSAY J. (2) ;
(1) Upland Environments Research Unit, School of Environment and Development, Univ., Manchester, ROYAUME-UNI
(2) Dep. of Geography, Univ., Guelph, BELGIQUE

Abstract

This paper develops an approach to extracting gully maps from high resolution digital elevation models (DEMs). Gully maps of the Bleaklow Plateau in northern England were derived from a 2 m LiDAR DEM by combining areas of low difference from mean elevation and high positive plan curvature. Gully depth was modelled by interpolating between gully edges. Testing of the gully mapping and depth modelling against aerial photography, manual interpretation of the DEM and ground survey revealed that gully plan form is well represented and gully width and depth are modelled with tolerances close to the horizontal and vertical resolution of the LiDAR imagery. This approach allows for the first time the derivation of accurate estimates of gully extent and magnitude over large areas and provides the basis for modelling a range of processes controlled by gullying

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, no8 [pp. 876-886]

Bibliographic references : 30 ref.

Collation : 13 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1918

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