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(Article of periodic en Anglais - 2011)

Document title

Using a GIS filtering approach to replicate patterns of glacial erosion

Authors(s) and Affiliation(s)

JANSSON K.N. (1) ; STROEVEN A.P. (1) ; ALM G. (1) ; DAHLGREN K.I.T. (2) ; GLASSER N.F. (3) ; GOODFELLOW B.W. (4) ;
(1) Dep. of Physical Geography and Quaternary Geology, Univ., Stockholm, SUEDE
(2) Statoil ASA, Harstad, NORVEGE
(3) Centre for Glaciology, Inst. Geography and Earth Sciences, Univ. Wales, Aberystwyth, ROYAUME-UNI
(4) School of Earth Sciences, Univ., Stanford, ETATS-UNIS

Abstract

A generic data set and a 50 m resolution digital elevation model over a study area in northern Sweden and Norway (the present day landscape data set) were employed to portray spatial patterns of erosion by reconstructing the landscape over successive cycles of glacial erosion. A maximum-value geographic information system (GIS) filtering technique using variable neighbourhoods was applied such that existing highpoints in the landscape were used as erosional anchor points for the reconstruction of past landscape topography. An inherent assumption, therefore, is that the highest surfaces have experienced insignificant down-wearing over the Quaternary. The method outlined in this paper shows how basic GIS filtering techniques can mimic some of the observed patterns of glacial erosion and thereby help deduce the key controls on the processes that govern large-scale landscape evolution beneath ice sheets

Source

Article of periodic

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

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

Millesime : 2011, vol. 36, no3 [pp. 408-418]

Bibliographic references : 2 p.

Collation : 6 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2056

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