Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations. Issue 85 (8th September 2021)
- Record Type:
- Journal Article
- Title:
- Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations. Issue 85 (8th September 2021)
- Main Title:
- Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations
- Authors:
- 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
Collins, 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
… (more) - Abstract:
- Abstract: 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.
- Is Part Of:
- Annals of glaciology. Volume 62:Issue 85/86(2021)
- Journal:
- Annals of glaciology
- Issue:
- Volume 62:Issue 85/86(2021)
- Issue Display:
- Volume 62, Issue 85/86 (2021)
- Year:
- 2021
- Volume:
- 62
- Issue:
- 85/86
- Issue Sort Value:
- 2021-0062-NaN-0000
- Page Start:
- 340
- Page End:
- 352
- Publication Date:
- 2021-09-08
- Subjects:
- Antarctic glaciology -- basal ice -- biogeochemistry -- glacial sedimentology -- subglacial lakes
Glaciology -- Periodicals
551.3105 qA613 - Journal URLs:
- https://www.cambridge.org/core/journals/annals-of-glaciology/all-issues ↗
http://www.ingenta.com/journals/browse/igsoc/agl ↗ - DOI:
- 10.1017/aog.2021.10 ↗
- Languages:
- English
- ISSNs:
- 0260-3055
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library STI - ELD Digital store
- Ingest File:
- 19691.xml