Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations
The Subglacial Antarctic Lakes Scientific Access (SALSA) Project accessed Mercer Subglacial Lake using environmentally clean hot-water drilling to examine interactions among ice, water, sediment, rock, microbes and carbon reservoirs within the lake water column and underlying sediments. A ~0.4 m dia...
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ftmontanastateu:oai:scholarworks.montana.edu:1/17035 2023-05-15T13:29:41+02:00 Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations Priscu, John C. Kalin, Jonas Winans, John Campbell, Timothy Siegfried, Matthew R. Skidmore, Mark Dore, John E. Leventer, Amy Harwood, David M. Duling, Dennis Zook, Robert Burnett, Justin Gibson, Dar Krula, Edward Mironov, Anatoly McManis, Jim Roberts, Graham Rosenheim, Brad E. Christner, Brent C. Kasic, Kathy Fricker, Helen A. Lyons, W. Berry Barker, Joel Bowling, Mark Collings, Billy Davis, Christina Gagnon, Al Gardner, Christopher Gustafson, Chloe Kim, Ok-Sun Li, Wei Michaud, Alex Patterson, Molly O. Tranter, Martyn Venturelli, Ryan Vick-Majors, Trista Elsworth, Cooper 2021-06 application/pdf https://scholarworks.montana.edu/xmlui/handle/1/17035 en_US eng Cambridge University Press Priscu, J. C., Kalin, J., Winans, J., Campbell, T., Siegfried, M. R., Skidmore, M., . & Elsworth, C. (2021). Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations. Annals of Glaciology, 62(85-86), 340-352. 0260-3055 https://scholarworks.montana.edu/xmlui/handle/1/17035 cc-by https://creativecommons.org/licenses/by/4.0/ CC-BY mercer subglacial lake Article 2021 ftmontanastateu 2022-09-03T22:40:16Z The Subglacial Antarctic Lakes Scientific Access (SALSA) Project accessed Mercer Subglacial Lake using environmentally clean hot-water drilling to examine interactions among ice, water, sediment, rock, microbes and carbon reservoirs within the lake water column and underlying sediments. A ~0.4 m diameter borehole was melted through 1087 m of ice and maintained over ~10 days, allowing observation of ice properties and collection of water and sediment with various tools. Over this period, SALSA collected: 60 L of lake water and 10 L of deep borehole water; microbes >0.2 μm in diameter from in situ filtration of ~100 L of lake water; 10 multicores 0.32–0.49 m long; 1.0 and 1.76 m long gravity cores; three conductivity–temperature–depth profiles of borehole and lake water; five discrete depth current meter measurements in the lake and images of ice, the lake water–ice interface and lake sediments. Temperature and conductivity data showed the hydrodynamic character of water mixing between the borehole and lake after entry. Models simulating melting of the ~6 m thick basal accreted ice layer imply that debris fall-out through the ~15 m water column to the lake sediments from borehole melting had little effect on the stratigraphy of surficial sediment cores. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Montana State University (MSU): ScholarWorks Antarctic Mercer ENVELOPE(65.647,65.647,-70.227,-70.227) |
institution |
Open Polar |
collection |
Montana State University (MSU): ScholarWorks |
op_collection_id |
ftmontanastateu |
language |
English |
topic |
mercer subglacial lake |
spellingShingle |
mercer subglacial lake Priscu, John C. Kalin, Jonas Winans, John Campbell, Timothy Siegfried, Matthew R. Skidmore, Mark Dore, John E. Leventer, Amy Harwood, David M. Duling, Dennis Zook, Robert Burnett, Justin Gibson, Dar Krula, Edward Mironov, Anatoly McManis, Jim Roberts, Graham Rosenheim, Brad E. Christner, Brent C. Kasic, Kathy Fricker, Helen A. Lyons, W. Berry Barker, Joel Bowling, Mark Collings, Billy Davis, Christina Gagnon, Al Gardner, Christopher Gustafson, Chloe Kim, Ok-Sun Li, Wei Michaud, Alex Patterson, Molly O. Tranter, Martyn Venturelli, Ryan Vick-Majors, Trista Elsworth, Cooper Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations |
topic_facet |
mercer subglacial lake |
description |
The Subglacial Antarctic Lakes Scientific Access (SALSA) Project accessed Mercer Subglacial Lake using environmentally clean hot-water drilling to examine interactions among ice, water, sediment, rock, microbes and carbon reservoirs within the lake water column and underlying sediments. A ~0.4 m diameter borehole was melted through 1087 m of ice and maintained over ~10 days, allowing observation of ice properties and collection of water and sediment with various tools. Over this period, SALSA collected: 60 L of lake water and 10 L of deep borehole water; microbes >0.2 μm in diameter from in situ filtration of ~100 L of lake water; 10 multicores 0.32–0.49 m long; 1.0 and 1.76 m long gravity cores; three conductivity–temperature–depth profiles of borehole and lake water; five discrete depth current meter measurements in the lake and images of ice, the lake water–ice interface and lake sediments. Temperature and conductivity data showed the hydrodynamic character of water mixing between the borehole and lake after entry. Models simulating melting of the ~6 m thick basal accreted ice layer imply that debris fall-out through the ~15 m water column to the lake sediments from borehole melting had little effect on the stratigraphy of surficial sediment cores. |
format |
Article in Journal/Newspaper |
author |
Priscu, John C. Kalin, Jonas Winans, John Campbell, Timothy Siegfried, Matthew R. Skidmore, Mark Dore, John E. Leventer, Amy Harwood, David M. Duling, Dennis Zook, Robert Burnett, Justin Gibson, Dar Krula, Edward Mironov, Anatoly McManis, Jim Roberts, Graham Rosenheim, Brad E. Christner, Brent C. Kasic, Kathy Fricker, Helen A. Lyons, W. Berry Barker, Joel Bowling, Mark Collings, Billy Davis, Christina Gagnon, Al Gardner, Christopher Gustafson, Chloe Kim, Ok-Sun Li, Wei Michaud, Alex Patterson, Molly O. Tranter, Martyn Venturelli, Ryan Vick-Majors, Trista Elsworth, Cooper |
author_facet |
Priscu, John C. Kalin, Jonas Winans, John Campbell, Timothy Siegfried, Matthew R. Skidmore, Mark Dore, John E. Leventer, Amy Harwood, David M. Duling, Dennis Zook, Robert Burnett, Justin Gibson, Dar Krula, Edward Mironov, Anatoly McManis, Jim Roberts, Graham Rosenheim, Brad E. Christner, Brent C. Kasic, Kathy Fricker, Helen A. Lyons, W. Berry Barker, Joel Bowling, Mark Collings, Billy Davis, Christina Gagnon, Al Gardner, Christopher Gustafson, Chloe Kim, Ok-Sun Li, Wei Michaud, Alex Patterson, Molly O. Tranter, Martyn Venturelli, Ryan Vick-Majors, Trista Elsworth, Cooper |
author_sort |
Priscu, John C. |
title |
Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations |
title_short |
Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations |
title_full |
Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations |
title_fullStr |
Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations |
title_full_unstemmed |
Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations |
title_sort |
scientific access into mercer subglacial lake: scientific objectives, drilling operations and initial observations |
publisher |
Cambridge University Press |
publishDate |
2021 |
url |
https://scholarworks.montana.edu/xmlui/handle/1/17035 |
long_lat |
ENVELOPE(65.647,65.647,-70.227,-70.227) |
geographic |
Antarctic Mercer |
geographic_facet |
Antarctic Mercer |
genre |
Annals of Glaciology Antarc* Antarctic |
genre_facet |
Annals of Glaciology Antarc* Antarctic |
op_relation |
Priscu, J. C., Kalin, J., Winans, J., Campbell, T., Siegfried, M. R., Skidmore, M., . & Elsworth, C. (2021). Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations. Annals of Glaciology, 62(85-86), 340-352. 0260-3055 https://scholarworks.montana.edu/xmlui/handle/1/17035 |
op_rights |
cc-by https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
_version_ |
1766001940644233216 |