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(Article of periodic en Anglais - 2011)

Document title

The topography of drumlins; assessing their long profile shape

Authors(s) and Affiliation(s)

SPAGNOLO M. (1) ; CLARK C.D. (2) ; HUGHES A.L.C. (3) ; DUNLOP P. (4) ;
(1) Environment and Geography Dep., Univ., Aberdeen, ROYAUME-UNI
(2) Dep. of Geography, Univ., Sheffield, ROYAUME-UNI
(3) School of the Environment and Society, Univ., Swansea, ROYAUME-UNI
(4) School of Environmental Sciences, Univ., Ulster, ROYAUME-UNI

Abstract

Here the shape of the drumlin longitudinal profile of 29,238 drumlins in the British Isles has been analysed. Drumlins were grouped into flowsets for which a palaeo ice flow direction was inferred independently of the drumlin shape. Given such ice flow directions it was then possible to identify the upflow and downflow ends of each drumlin and to trace and extract its longitudinal profile. The results indicate that drumlin longitudinal profile is far from being the classically asymmetric shape widely reported in text-book descriptions. Drumlins are mostly symmetrical in shape with a very slight tendency towards the classical shape. This demonstrates that the idealized stoss–lee shape of classically-asymmetric drumlins is not representative of the population and should be replaced with that of mostly symmetric bumps. Drumlin shape is not a good indicator of the palaeo ice flow direction

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, no6 [pp. 790-804]

Bibliographic references : 2 p.

Collation : 12 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2107

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