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

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dc.contributor.authorRoss, Nen_AU
dc.contributor.authorSiegert, MJen_AU
dc.contributor.authorRivera, Aen_AU
dc.contributor.authorBentley, MJen_AU
dc.contributor.authorBlake, Den_AU
dc.contributor.authorCapper, Len_AU
dc.contributor.authorClarke, Ren_AU
dc.contributor.authorCockell, CSen_AU
dc.contributor.authorCorr, HFJen_AU
dc.contributor.authorHarris, Wen_AU
dc.contributor.authorHill, Cen_AU
dc.contributor.authorHindmarsh, RCAen_AU
dc.contributor.authorHodgson, DAen_AU
dc.contributor.authorKing, ECen_AU
dc.contributor.authorLamb, Hen_AU
dc.contributor.authorMaher, Ben_AU
dc.contributor.authorMakinson, Ken_AU
dc.contributor.authorMowlem, Men_AU
dc.contributor.authorParnell, Jen_AU
dc.contributor.authorPearce, DAen_AU
dc.contributor.authorPriscu, Jen_AU
dc.contributor.authorSmith, AMen_AU
dc.contributor.authorTait, Aen_AU
dc.contributor.authorTranter, Men_AU
dc.contributor.authorWadham, JLen_AU
dc.contributor.authorWhalley, WBen_AU
dc.contributor.authorWoodward, JCen_AU
dc.date.accessioned2022-05-05T22:44:20Zen_AU
dc.date.available2022-05-05T22:44:20Zen_AU
dc.date.issued2011-01-01en_AU
dc.date.statistics2022-05-04en_AU
dc.descriptionThe doi supplied on the Wiley website for this chapter ( https://doi.org/10.1002/9781118670354.ch13) is not valid. The chapter can be accessed via the doi for the book (https://doi.org/10.1029/GM192) or at the Wiley website: https://agupubs.onlinelibrary.wiley.com/doi/10.1002/9781118670354.ch13en_AU
dc.description.abstractEllsworth 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 (<6 m yr-1 ), flow convergence, and longitudinal extension. The lake appears to be in steady state, although the hydrological balance may vary over glacial-interglacial cycles. Direct access, measurement, and sampling of Ellsworth Subglacial Lake are planned for the 2012/2013 Antarctic field season. The aims of this access experiment are to determine (1) the presence, character, and maintenance of microbial life in Antarctic subglacial lakes and (2) the Quaternary history of the West Antarctic ice sheet. Geophysical data have been used to define a preferred lake access site. The factors that make this location suitable for exploration are (1) a relatively thin overlying ice column (~3.1 km), (2) a significant measured water depth (~143 m), (3) >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. © 2011 American Geophysical Union.en_AU
dc.identifier.booktitlentarctic Subglacial Aquatic Environmentsen_AU
dc.identifier.citationRoss, N., Siegert, M. J., Rivera, A., Bentley, M. J., Blake, D., Capper, L., Clarke, R., Cockell, C. S., Corr, H. F. J., Harris, W., Hill, C., Hindmarsh, R. C. A., Hodgson, D. A., King, E. C., Lamb H., Maher, B., Makinson, K., Mowlem, M., Parnell, J., Pearce, D.A., Priscu, J., Smith, A. M., Tait, A., Tranter, M., Wadham, J. L., Whalley, W. B. & Woodward, J. (2011). Ellsworth Subglacial Lake, West Antarctica: a review of its history and recent field campaigns. In Siegert, M.J. & Kennicutt, M. C. (Eds), Antarctic Subglacial Aquatic Environments, 192, 221-233. doi:10.1029/GM192en_AU
dc.identifier.editorsSiegert, M.J. & Kennicutt, M. C.en_AU
dc.identifier.isbn9781118670354en_AU
dc.identifier.issn0065-8448en_AU
dc.identifier.pagination221-233en_AU
dc.identifier.placeofpublicationWashington, DCen_AU
dc.identifier.urihttps://doi.org/10.1029/GM192en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/13129en_AU
dc.identifier.volume192en_AU
dc.language.isoenen_AU
dc.publisherJohn Wiley & Sons, Incen_AU
dc.relation.ispartofseriesGeophysical Monograph Series;92en_AU
dc.subjectInventoriesen_AU
dc.subjectGeophysical surveysen_AU
dc.subjectLakesen_AU
dc.subjectSedimentsen_AU
dc.subjectDrill coresen_AU
dc.subjectIceen_AU
dc.subjectAntarcticaen_AU
dc.subjectAquatic ecosystemsen_AU
dc.titleEllsworth Subglacial Lake, West Antarctica: a review of its history and recent field campaignsen_AU
dc.typeBook chapteren_AU
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