Articles | Volume 17, issue 4
https://doi.org/10.5194/tc-17-1787-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-1787-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| Highlight paper
| 
28 Apr 2023
Research article | Highlight paper |
| 28 Apr 2023
| 28 Apr 2023
Reversible ice sheet thinning in the Amundsen Sea Embayment during the Late Holocene
Greg Balco
CORRESPONDING AUTHOR
Berkeley Geochronology Center, Berkeley, CA, USA
Nathan Brown
Earth and Environmental Sciences, University of Texas Arlington, Arlington, TX, USA
Keir Nichols
Earth Science and Engineering, Imperial College London, London, UK
Ryan A. Venturelli
Geology and Geological Engineering, Colorado School of Mines, Golden, CO, USA
Jonathan Adams
Earth Science and Engineering, Imperial College London, London, UK
British Antarctic Survey, Cambridge, UK
Scott Braddock
School of Earth and Climate Sciences, University of Maine, Orono, ME, USA
Seth Campbell
School of Earth and Climate Sciences, University of Maine, Orono, ME, USA
Brent Goehring
Earth and Environmental Sciences, Tulane University, New Orleans, LA, USA
Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, USA
Joanne S. Johnson
British Antarctic Survey, Cambridge, UK
Dylan H. Rood
Earth Science and Engineering, Imperial College London, London, UK
Klaus Wilcken
Australian National Science and Technology Organisation (ANSTO), Lucas Heights, NSW, Australia
Brenda Hall
School of Earth and Climate Sciences, University of Maine, Orono, ME, USA
John Woodward
Geography and Environmental Sciences, Northumbria University, Newcastle-upon-Tyne, UK
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Cited
8 citations as recorded by crossref.
- Ocean cavity regime shift reversed West Antarctic grounding line retreat in the late Holocene D. Lowry et al. 10.1038/s41467-024-47369-3
- Recent tropical Andean glacier retreat is unprecedented in the Holocene A. Gorin et al. 10.1126/science.adg7546
- Offshore-onshore record of Last Glacial Maximum–to–present grounding line retreat at Pine Island Glacier, Antarctica K. Nichols et al. 10.1130/G51326.1
- Accelerated retreat of northern James Ross Island ice streams (Antarctic Peninsula) in the Early-Middle Holocene induced by buoyancy response to postglacial sea level rise M. Roman et al. 10.1016/j.epsl.2024.118803
- Ice-sheet burial and erosion inferred from cosmogenic nuclide bedrock depth profiles: Implications for the glaciation history of northeastern Fennoscandia J. Andersen et al. 10.1016/j.quascirev.2024.109010
- Geological insights from the newly discovered granite of Sif Island between Thwaites and Pine Island glaciers J. Marschalek et al. 10.1017/S0954102023000287
- Contemporary ice sheet thinning drives subglacial groundwater exfiltration with potential feedbacks on glacier flow A. Robel et al. 10.1126/sciadv.adh3693
- Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica S. Braddock et al. 10.1017/aog.2024.12
8 citations as recorded by crossref.
- Ocean cavity regime shift reversed West Antarctic grounding line retreat in the late Holocene D. Lowry et al. 10.1038/s41467-024-47369-3
- Recent tropical Andean glacier retreat is unprecedented in the Holocene A. Gorin et al. 10.1126/science.adg7546
- Offshore-onshore record of Last Glacial Maximum–to–present grounding line retreat at Pine Island Glacier, Antarctica K. Nichols et al. 10.1130/G51326.1
- Accelerated retreat of northern James Ross Island ice streams (Antarctic Peninsula) in the Early-Middle Holocene induced by buoyancy response to postglacial sea level rise M. Roman et al. 10.1016/j.epsl.2024.118803
- Ice-sheet burial and erosion inferred from cosmogenic nuclide bedrock depth profiles: Implications for the glaciation history of northeastern Fennoscandia J. Andersen et al. 10.1016/j.quascirev.2024.109010
- Geological insights from the newly discovered granite of Sif Island between Thwaites and Pine Island glaciers J. Marschalek et al. 10.1017/S0954102023000287
- Contemporary ice sheet thinning drives subglacial groundwater exfiltration with potential feedbacks on glacier flow A. Robel et al. 10.1126/sciadv.adh3693
- Lessons learned from shallow subglacial bedrock drilling campaigns in Antarctica S. Braddock et al. 10.1017/aog.2024.12
Latest update: 20 Nov 2024
Co-editor-in-chief
In recent years there has been growing concern about the potentially irreversible retreat of the West Antarctic Ice Sheet and Thwaites Glacier in particular causing deglaciation of large parts of the ice sheet and leading to substantial sea-level rise. This study demonstrates that a site between Thwaites and Pope glaciers has undergone ice-sheet thinning and subsequent thickening in the past. The results are of importance for a better understanding of future threats to the stability of the West Antarctic ice sheet, and the ice-sheet evolution in the Amundsen sector over the late Holocene.
In recent years there has been growing concern about the potentially irreversible retreat of the...
Short summary
Samples of bedrock recovered from below the West Antarctic Ice Sheet show that part of the ice sheet was thinner several thousand years ago than it is now and subsequently thickened. This is important because of concern that present ice thinning in this region may lead to rapid, irreversible sea level rise. The past episode of thinning at this site that took place in a similar, although not identical, climate was not irreversible; however, reversal required at least 3000 years to complete.
Samples of bedrock recovered from below the West Antarctic Ice Sheet show that part of the ice...
