Antarctic Science



A revised inventory of Antarctic subglacial lakes


MARTIN J. SIEGERT a1c1, SASHA CARTER a2, IGNAZIO TABACCO a3, SERGEY POPOV a4 and DONALD D. BLANKENSHIP a2
a1 Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol BS8 1SS, UK
a2 Institute for Geophysics, John A. and Katherine G. Jackson School of Geosciences, The University of Texas at Austin, 4412 Spicewood Springs Road, Austin, TX 78759, USA
a3 University of Milan, Department of Earth Sciences, via Cicognara 7, 20129 Milano, Italy
a4 Polar Marine Geological Research Expedition (PMGRE), 24 Pobeda str., St. Petersburg, Lomonosov, 188512, Russia

Article author query
siegert mj   [PubMed][Google Scholar] 
carter s   [PubMed][Google Scholar] 
tabacco i   [PubMed][Google Scholar] 
popov s   [PubMed][Google Scholar] 
blankenship dd   [PubMed][Google Scholar] 

Abstract

The locations and details of 145 Antarctic subglacial lakes are presented. The inventory is based on a former catalogue of lake-type features, which has been subsequently reanalysed, and on the results from three additional datasets. The first is from Italian radio-echo sounding (RES) of the Dome C region of East Antarctica, from which 14 new lakes are identified. These data also show that, in a number of occasions, multiple lake-type reflectors thought previously to be individual lakes are in fact reflections from the same relatively large lake. This reduces the former total of lake-type reflectors by six, but also adds a significant level of information to these particular lakes. The second dataset is from a Russian survey of the Dome A and Dome F regions of East Antarctica, which provides evidence of 18 new lakes and extends the coverage of the inventory considerably. The third dataset comprises three airborne RES surveys undertaken by the US in East Antarctica over the last five years, from which forty three new lakes have been identified. Reference to information on Lake Vostok, from Italian and US surveys taken in the last few years, is now included.

(Received September 1 2004)
(Accepted February 8 2005)


Key Words: ice sheet; radio-echo sounding; sub-ice water.

Correspondence:
c1 corresponding author: m.j.siegert@bristol.ac.uk


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