A method for successful collection of multicores and gravity cores from Antarctic subglacial lakes

被引：4

作者：

Rosenheim, Brad B. ^{[1
]}

Michaud, Alexander ^{[2
]}

Broda, James ^{[3
]}

Gagnon, Alan A. ^{[3
]}

Venturelli, Ryan D. ^{[4
]}

Campbell, Timothy ^{[5
]}

Leventer, Amy ^{[6
]}

Patterson, Molly R. ^{[7
]}

Siegfried, Matthew C. ^{[8
]}

Christner, Brent ^{[9
]}

Duling, Dennis ^{[10
]}

Harwood, David E. ^{[10
]}

Dore, John ^{[11
]}

Tranter, Martyn L. ^{[12
]}

Skidmore, Mark C. ^{[5
]}

Priscu, John ^{[13
]}

机构：

[1] Univ S Florida, Coll Marine Sci, St Petersburg, FL 33701 USA

[2] Bigelow Lab Ocean Sci, E Boothbay, ME USA

[3] Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA USA

[4] Colorado Sch Mines, Dept Geol & Geol Engn, Golden, CO USA

[5] Montana State Univ, Dept Earth Sci, Bozeman, MT USA

[6] Colgate Univ, Dept Earth & Environm Geosci, Hamilton, NY USA

[7] Binghamton Univ, Dept Earth Sci, Binghamton, NY USA

[8] Colorado Sch Mines, Dept Geophys, Golden, CO USA

[9] Univ Florida, Dept Microbiol & Cell Sci, Gainesville, FL USA

[10] Univ Nebraska, Dept Earth & Atmospher Sci, Lincoln, NE USA

[11] Montana State Univ, Dept Land Resources & Environm Sci, Bozeman, MT USA

[12] Univ Bristol, Sch Geog Sci, Bristol, England

[13] Polar Oceans Res Grp, Sheridan, MT USA

来源：

LIMNOLOGY AND OCEANOGRAPHY-METHODS | 2023年 / 21卷 / 05期

基金：

美国国家科学基金会;

关键词：

SEDIMENTARY PROCESSES; ICE STREAM; BENEATH; WHILLANS; INVENTORY; WISSARD; SYSTEM; SHEET;

D O I：

10.1002/lom3.10545

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

During the 2018-2019 Antarctic field season, the Subglacial Antarctic Lakes Scientific Access project team cleanly accessed Mercer Subglacial Lake, West Antarctica, to sample water and sediments beneath 1087 m of overlying ice. A multicorer was successful in sampling the sediment-water interface, with 4 deployments retrieving 10 cores between 0.3 and 0.4 m in length. Gravity coring was also successful, retrieving cores of 0.97 and 1.78 m in glacial diamict. However, sediment cores retrieved by the gravity cores were shorter than the core barrel penetration (as measured by mud streaks on the outside of the coring system), indicating that the system can likely be improved. This manuscript describes the design, implementation, successes, and lessons learned while coring sediments in a subglacial lake.

引用

页码：279 / 294

页数：16

共 6 条

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