Ellsworth Subglacial Lake, West Antarctica: A review of its history and recent field campaigns

Ellsworth Subglacial Lake, first observed in airborne radio echo sounding data acquired in 1978, is located within a long, deep subglacial trough within the Ellsworth Subglacial Highlands of West Antarctica. Geophysical surveys have characterized the lake, its subglacial catchment, and the thickness, structure, and flow of the overlying ice sheet. Covering 28.9 km2, Ellsworth Subglacial Lake is located below 2.9 to 3.3 km of ice at depths of −1361 to −1030 m. Seismic reflection data have shown the lake to be up to 156 m deep and underlain by unconsolidated sediments. Ice sheet flow over the lake is characterized by low velocities (2 m of sediment below the lake floor, (4) water circulation modeling suggesting a melting ice-water interface, and (5) coring that can target the deepest point of the lake floor away from marginal, localized sediment sources.

Details

Publication status:
Published
Author(s):
Authors: Ross, N., Siegert, M.J., Rivera, A., Bentley, M.J., Blake, David, Capper, Linda, Clarke, Rachel, Cockell, C.S., Corr, Hugh, Harris, W., Hill, Christopher, Hindmarsh, Richard, Hodgson, Dominic, King, Edward, Lamb, H., Maher, B., Makinson, Keith, Mowlem, M., Parnell, J., Pearce, David, Priscu, J., Smith, Andy, Tait, Andrew, Tranter, M., Wadham, J.L., Whalley, W.B., Woodward, J.

Editors: Siegert, Martin J, Kennicutt, Mahlon C., II, Bindschadler, Robert A.

On this site: Andy Smith, Andrew Tait, Dominic Hodgson, David Pearce, Edward King, Hugh Corr, Mark Barham, Keith Makinson, Linda Capper, Rachel Clarke, Richard Hindmarsh, Richard Hindmarsh
Date:
1 January, 2011
Journal/Source:
In: Siegert, Martin J, Kennicutt, Mahlon C., II, Bindschadler, Robert A. (eds.). Antarctic Subglacial Aquatic Environments, American Geophysical Union, 221-233.
Page(s):
221-233