Articles | Volume 12, issue 8
https://doi.org/10.5194/tc-12-2707-2018
https://doi.org/10.5194/tc-12-2707-2018
Research article
 | 
17 Aug 2018
Research article |  | 17 Aug 2018

Diagnosing ice sheet grounding line stability from landform morphology

Lauren M. Simkins, Sarah L. Greenwood, and John B. Anderson

Related authors

Insights into glacial processes from micromorphology of silt-sized sediment
Allison P. Lepp, Lauren E. Miller, John B. Anderson, Matt O'Regan, Monica C. M. Winsborrow, James A. Smith, Claus-Dieter Hillenbrand, Julia S. Wellner, Lindsay O. Prothro, and Evgeny A. Podolskiy
The Cryosphere, 18, 2297–2319, https://doi.org/10.5194/tc-18-2297-2024,https://doi.org/10.5194/tc-18-2297-2024, 2024
Short summary
Spatial variability of marine-terminating ice sheet retreat in the Puget Lowland
Marion A. McKenzie, Lauren E. Miller, Allison P. Lepp, and Regina DeWitt
Clim. Past, 20, 891–908, https://doi.org/10.5194/cp-20-891-2024,https://doi.org/10.5194/cp-20-891-2024, 2024
Short summary
Differential impact of isolated topographic bumps on ice sheet flow and subglacial processes
Marion A. McKenzie, Lauren E. Miller, Jacob S. Slawson, Emma J. MacKie, and Shujie Wang
The Cryosphere, 17, 2477–2486, https://doi.org/10.5194/tc-17-2477-2023,https://doi.org/10.5194/tc-17-2477-2023, 2023
Short summary
Revealing the former bed of Thwaites Glacier using sea-floor bathymetry: implications for warm-water routing and bed controls on ice flow and buttressing
Kelly A. Hogan, Robert D. Larter, Alastair G. C. Graham, Robert Arthern, James D. Kirkham, Rebecca L. Totten, Tom A. Jordan, Rachel Clark, Victoria Fitzgerald, Anna K. Wåhlin, John B. Anderson, Claus-Dieter Hillenbrand, Frank O. Nitsche, Lauren Simkins, James A. Smith, Karsten Gohl, Jan Erik Arndt, Jongkuk Hong, and Julia Wellner
The Cryosphere, 14, 2883–2908, https://doi.org/10.5194/tc-14-2883-2020,https://doi.org/10.5194/tc-14-2883-2020, 2020
Short summary

Related subject area

Discipline: Ice sheets | Subject: Antarctic
Extensive palaeo-surfaces beneath the Evans–Rutford region of the West Antarctic Ice Sheet control modern and past ice flow
Charlotte M. Carter, Michael J. Bentley, Stewart S. R. Jamieson, Guy J. G. Paxman, Tom A. Jordan, Julien A. Bodart, Neil Ross, and Felipe Napoleoni
The Cryosphere, 18, 2277–2296, https://doi.org/10.5194/tc-18-2277-2024,https://doi.org/10.5194/tc-18-2277-2024, 2024
Short summary
Towards the systematic reconnaissance of seismic signals from glaciers and ice sheets – Part 1: Event detection for cryoseismology
Rebecca B. Latto, Ross J. Turner, Anya M. Reading, and J. Paul Winberry
The Cryosphere, 18, 2061–2079, https://doi.org/10.5194/tc-18-2061-2024,https://doi.org/10.5194/tc-18-2061-2024, 2024
Short summary
Towards the systematic reconnaissance of seismic signals from glaciers and ice sheets – Part 2: Unsupervised learning for source process characterization
Rebecca B. Latto, Ross J. Turner, Anya M. Reading, Sue Cook, Bernd Kulessa, and J. Paul Winberry
The Cryosphere, 18, 2081–2101, https://doi.org/10.5194/tc-18-2081-2024,https://doi.org/10.5194/tc-18-2081-2024, 2024
Short summary
Geometric amplification and suppression of ice-shelf basal melt in West Antarctica
Jan De Rydt and Kaitlin Naughten
The Cryosphere, 18, 1863–1888, https://doi.org/10.5194/tc-18-1863-2024,https://doi.org/10.5194/tc-18-1863-2024, 2024
Short summary
Alpine topography of the Gamburtsev Subglacial Mountains, Antarctica, mapped from ice sheet surface morphology
Edmund J. Lea, Stewart S. R. Jamieson, and Michael J. Bentley
The Cryosphere, 18, 1733–1751, https://doi.org/10.5194/tc-18-1733-2024,https://doi.org/10.5194/tc-18-1733-2024, 2024
Short summary

Cited articles

Alley, K. E., Scambos, T. A., Siegfried, M. R., and Fricker, H. A.: Impacts of warm water on Antarctic ice shelf stability through basal channel formation, Nat. Geosci., 9, 290–293, 2016.
Alley, R. B., Blankenship, D. D., Bentley, C. R., and Rooney, S.: Till beneath ice stream B: 3. Till deformation: evidence and implications, J. Geophys. Res.-Sol. Ea., 92, 8921–8929, 1987.
Alley, R. B.: Water-pressure coupling of sliding and bed deformation: I. Water system, J. Glaciol., 35, 108–118, 1989.
Alley, R. B., Anandakrishnan, S., Dupont, T. K., Parizek, B. R., and Pollard, D.: Effect of sedimentation on ice-sheet grounding-line stability, Science, 315, 1838–1841, 2007.
Anandakrishnan, S., Voigt, D. E., Alley, R. B., and King, M. A.:. Ice stream D flow speed is strongly modulated by the tide beneath the Ross Ice Shelf, Geophys. Res. Lett., 30, 1361, https://doi.org/10.1029/2002GL016329, 2003.
Download
Short summary
Using thousands of grounding line landforms in the Ross Sea, Antarctica, we observe two distinct landform types associated with contrasting styles of grounding line retreat. We characterise landform morphology, examine factors that control landform morphology and distribution, and explore drivers of grounding line (in)stability. This study highlights the importance of understanding thresholds which may destabilise a system and of controls on grounding line retreat over a range of timescales.