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An inventory of Antarctic sub-glacial lakes

Published online by Cambridge University Press:  12 May 2004

M.J. Siegert
Affiliation:
Centre for Glaciology, Institute of Earth Studies, University of Wales, Aberystwyth, Dyfed SY23 3DB, UK
J.A. Dowdeswell
Affiliation:
Centre for Glaciology, Institute of Earth Studies, University of Wales, Aberystwyth, Dyfed SY23 3DB, UK
M.R. Gorman
Affiliation:
Centre for Glaciology, Institute of Earth Studies, University of Wales, Aberystwyth, Dyfed SY23 3DB, UK
N.F. McIntyre
Affiliation:
Earth Observation Sciences Ltd, Broadmede, Farnham Business Park, Farnham, Surrey GU9 8QL, UK

Abstract

An extensive analogue database of 60 MHz radio-echo sounding records of Antarctica (covering 50% of the ice sheet) is held at the Scott Polar Research Institute, University of Cambridge. This database was analysed in order to determine the presence and location of Antarctic sub-glacial lakes. In total, 77 sub-glacial lake-type records were identified, 13 more than detected in previous studies. An inventory of these sub-glacial lakes includes geographical coordinates, minimum length and overlying ice thickness for each lake. Information concerning the location of these lakes indicates that the majority (~70%) are found in the proximity of ice divides at Dome C and Ridge B within East Antarctica.

Type
Papers—Earth Sciences and Glaciology
Copyright
© Antarctic Science Ltd 1996

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