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...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2021-09-01
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| Series: | Annals of Glaciology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0260305521000100/type/journal_article |
| _version_ | 1811157278525489152 |
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| author | John C. Priscu Jonas Kalin John Winans Timothy Campbell Matthew R. Siegfried Mark Skidmore John E. Dore Amy Leventer David M. Harwood Dennis Duling Robert Zook Justin Burnett Dar Gibson Edward Krula Anatoly Mironov Jim McManis Graham Roberts Brad E. Rosenheim Brent C. Christner Kathy Kasic Helen A. Fricker W. Berry Lyons Joel Barker Mark Bowling Billy Collins Christina Davis Al Gagnon Christopher Gardner Chloe Gustafson Ok-Sun Kim Wei Li Alex Michaud Molly O. Patterson Martyn Tranter Ryan Venturelli Trista Vick-Majors Cooper Elsworth |
| author_facet | John C. Priscu Jonas Kalin John Winans Timothy Campbell Matthew R. Siegfried Mark Skidmore John E. Dore Amy Leventer David M. Harwood Dennis Duling Robert Zook Justin Burnett Dar Gibson Edward Krula Anatoly Mironov Jim McManis Graham Roberts Brad E. Rosenheim Brent C. Christner Kathy Kasic Helen A. Fricker W. Berry Lyons Joel Barker Mark Bowling Billy Collins Christina Davis Al Gagnon Christopher Gardner Chloe Gustafson Ok-Sun Kim Wei Li Alex Michaud Molly O. Patterson Martyn Tranter Ryan Venturelli Trista Vick-Majors Cooper Elsworth |
| author_sort | John C. Priscu |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-04-10T05:03:26Z |
| format | Article |
| id | doaj.art-39e16336c1ca4fa490c7bca21450f9f6 |
| institution | Directory Open Access Journal |
| issn | 0260-3055 1727-5644 |
| language | English |
| last_indexed | 2024-04-10T05:03:26Z |
| publishDate | 2021-09-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Annals of Glaciology |
| spelling | doaj.art-39e16336c1ca4fa490c7bca21450f9f62023-03-09T12:27:43ZengCambridge University PressAnnals of Glaciology0260-30551727-56442021-09-016234035210.1017/aog.2021.10Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observationsJohn C. Priscu0https://orcid.org/0000-0001-5807-6364Jonas Kalin1John Winans2Timothy Campbell3Matthew R. Siegfried4https://orcid.org/0000-0002-0868-4633Mark Skidmore5John E. Dore6Amy Leventer7David M. Harwood8Dennis Duling9Robert Zook10Justin Burnett11Dar Gibson12Edward Krula13Anatoly Mironov14Jim McManis15Graham Roberts16Brad E. Rosenheim17Brent C. Christner18Kathy Kasic19Helen A. Fricker20W. Berry Lyons21Joel Barker22Mark Bowling23Billy Collins24Christina Davis25Al Gagnon26Christopher Gardner27Chloe Gustafson28Ok-Sun Kim29Wei Li30Alex Michaud31Molly O. Patterson32Martyn Tranter33Ryan Venturelli34Trista Vick-Majors35https://orcid.org/0000-0002-6868-4010Cooper Elsworth36Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, MT, USAAntarctic Science Management Office, University of Nebraska-Lincoln, Lincoln, NE, USADepartment of Computer Science, Northern Illinois University, DeKalb, IL, USADepartment of Earth Sciences, Montana State University, Bozeman, MT, USADepartment of Geophysics, Colorado School of Mines, Golden, CO, USADepartment of Earth Sciences, Montana State University, Bozeman, MT, USADepartment of Land Resources and Environmental Sciences, Montana State University, Bozeman, MT, USADepartment of Geology, Colgate University, Hamilton, NY, USADepartment of Earth and Atmospheric Sciences, University of Nebraska-Lincoln, Lincoln, NE, USAAntarctic Science Management Office, University of Nebraska-Lincoln, Lincoln, NE, USAAntarctic Science Management Office, University of Nebraska-Lincoln, Lincoln, NE, USAApplied Physics Laboratory, University of Washington, Seattle, WA, USAAntarctic Science Management Office, University of Nebraska-Lincoln, Lincoln, NE, USAAntarctic Science Management Office, University of Nebraska-Lincoln, Lincoln, NE, USADepartment of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE, USAEngineering and Science Research Support Facility, University of Nebraska, Lincoln, NE, USAAntarctic Science Management Office, University of Nebraska-Lincoln, Lincoln, NE, USACollege of Marine Science, University of South Florida, St. Petersburg, FL, USADepartment of Microbiology and Cell Science, University of Florida, Gainesville, FL, USACommunication Studies, California State University-Sacramento, Sacramento, CA, USAInstitute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California San Diego, San Diego, CA, USADepartment of Earth Sciences, Ohio State University, Columbus, OH, USADepartment of Earth and Environmental Sciences, University of Minnesota, Minneapolis, MN, USAAntarctic Science Management Office, University of Nebraska-Lincoln, Lincoln, NE, USACommunication Studies, California State University-Sacramento, Sacramento, CA, USADepartment of Microbiology and Cell Science, University of Florida, Gainesville, FL, USAGeology and Geophysics, Woods Hole Oceanographic Institute, Woods Hole, MA, USADepartment of Earth Sciences, Ohio State University, Columbus, OH, USASwansea University, Swansea, UKDivision of Life Sciences, Korea Polar Research Institute, Incheon 21990, Republic of KoreaDepartment of Land Resources and Environmental Sciences, Montana State University, Bozeman, MT, USABigelow Laboratory for Ocean Sciences, East Boothbay, ME, USAGeological Sciences and Environmental Studies, Binghamton University, Binghamton, NY, USASchool of Geographical Sciences, University of Bristol, Bristol, UKCollege of Marine Science, University of South Florida, St. Petersburg, FL, USADepartment of Biological Sciences, Michigan Technological University, Houghton, MI, USADescartes Labs, Sante Fe, NM, USAThe 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.https://www.cambridge.org/core/product/identifier/S0260305521000100/type/journal_articleAntarctic glaciologybasal icebiogeochemistryglacial sedimentologysubglacial lakes |
| spellingShingle | John C. Priscu Jonas Kalin John Winans Timothy Campbell Matthew R. Siegfried Mark Skidmore John E. Dore Amy Leventer David M. Harwood Dennis Duling Robert Zook Justin Burnett Dar Gibson Edward Krula Anatoly Mironov Jim McManis Graham Roberts Brad E. Rosenheim Brent C. Christner Kathy Kasic Helen A. Fricker W. Berry Lyons Joel Barker Mark Bowling Billy Collins Christina Davis Al Gagnon Christopher Gardner Chloe Gustafson Ok-Sun Kim Wei Li Alex Michaud Molly O. Patterson Martyn Tranter Ryan Venturelli Trista Vick-Majors Cooper Elsworth Scientific access into Mercer Subglacial Lake: scientific objectives, drilling operations and initial observations Annals of Glaciology Antarctic glaciology basal ice biogeochemistry glacial sedimentology subglacial lakes |
| title | 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_short | 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 |
| topic | Antarctic glaciology basal ice biogeochemistry glacial sedimentology subglacial lakes |
| url | https://www.cambridge.org/core/product/identifier/S0260305521000100/type/journal_article |
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