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(Article of periodic en Anglais - 2008)

Document title

Geological constraints on Antarctic palaeo-ice-stream retreat

published at : Reconstructing ice-sheet dynamics from subglacial sediments and landforms. Special issue

Authors(s) and Affiliation(s)

Ó COFAIGH C. ; DOWDESWELL J.A. ; EVANS J. ; LARTER R.D. ;

Abstract

Submarine landforms preserved in bathymetric troughs on the Antarctic continental shelf show that the style of ice stream retreat across the shelf following the last glacial maximum varied between different troughs. Three styles of retreat are inferred from the geological evidence : rapid, episodic and slow. They indicate that Antarctic palaeo-ice-streams did not respond uniformly to external forcing at the end of the last glacial cycle. Rather, their diachronous retreat reflects the dominance of local controls in the form of bathymetry and drainage basin size. These data provide important constraints for numerical models that attempt to predict the dynamics of large polar ice sheets

Source

Thematical fascicle

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

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

Millesime : 2008, vol. 33, no 4 [pp. 513-525]

Bibliographic references : 46 ref.

Language

Anglais

Localisation

Laboratoire INTERGEO - Paris

INIST-CNRS, Cote INIST : 17355

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2008.
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