Clean access, measurement, and sampling of Ellsworth Subglacial Lake: A method for exploring deep Antarctic subglacial lake environments

Martin J. Siegert*, Rachel J. Clarke, Matt Mowlem, Neil Ross, Christopher S. Hill, Andrew Tait, Dominic Hodgson, John Parnell, Martyn Tranter, David Pearce, Michael J. Bentley, Charles Cockell, Maria Nefeli Tsaloglou, Andy Smith, John Woodward, Mario P. Brito, Ed Waugh

*Corresponding author for this work

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Antarctic subglacial lakes are thought to be extreme habitats for microbial life and may contain important records of ice sheet history and climate change within their lake floor sediments. To find whether or not this is true, and to answer the science questions that would follow, direct measurement and sampling of these environments are required. Ever since the water depth of Vostok Subglacial Lake was shown to be >500 m, attention has been given to how these unique, ancient, and pristine environments may be entered without contamination and adverse disturbance. Several organizations have offered guidelines on the desirable cleanliness and sterility requirements for direct sampling experiments, including the U.S. National Academy of Sciences and the Scientific Committee on Antarctic Research. Here we summarize the scientific protocols and methods being developed for the exploration of Ellsworth Subglacial Lake in West Antarctica, planned for 2012-2013, which we offer as a guide to future subglacial environment research missions. The proposed exploration involves accessing the lake using a hot-water drill and deploying a sampling probe and sediment corer to allow sample collection. We focus here on how this can be undertaken with minimal environmental impact while maximizing scientific return without compromising the environment for future experiments.

Original languageEnglish
Article numberRG1003
Number of pages40
JournalReviews of Geophysics
Volume50
Issue number1
Early online date7 Jan 2012
DOIs
Publication statusPublished - Mar 2012

ASJC Scopus subject areas

  • Geophysics

Fingerprint Dive into the research topics of 'Clean access, measurement, and sampling of Ellsworth Subglacial Lake: A method for exploring deep Antarctic subglacial lake environments'. Together they form a unique fingerprint.

  • Cite this

    Siegert, M. J., Clarke, R. J., Mowlem, M., Ross, N., Hill, C. S., Tait, A., Hodgson, D., Parnell, J., Tranter, M., Pearce, D., Bentley, M. J., Cockell, C., Tsaloglou, M. N., Smith, A., Woodward, J., Brito, M. P., & Waugh, E. (2012). Clean access, measurement, and sampling of Ellsworth Subglacial Lake: A method for exploring deep Antarctic subglacial lake environments. Reviews of Geophysics, 50(1), [RG1003]. https://doi.org/10.1029/2011RG000361