Articles | Volume 18, issue 4
https://doi.org/10.5194/tc-18-1533-2024
© Author(s) 2024. 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-18-1533-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Apr 2024
Research article |
| 05 Apr 2024
| 05 Apr 2024
Dynamical response of the southwestern Laurentide Ice Sheet to rapid Bølling–Allerød warming
Sophie L. Norris
CORRESPONDING AUTHOR
Department of Geography, University of Victoria, David Turpin Building, 3800 Finnerty Road, Victoria, BC, V9P 5C2, Canada
Department of Earth and Atmospheric Sciences, 1–26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada
Martin Margold
Department of Physical Geography and Geoecology, Charles University, Albertov 6, 128 43 Prague 2, Czech Republic
David J. A. Evans
Department of Geography, Durham University, South Road, Durham, DH1 3LE, United Kingdom
Nigel Atkinson
Alberta Geological Survey, Alberta Energy Regulator, 402 Twin Atria Building, 4 4999-98 Avenue, Edmonton, AB, T6B 2X3, Canada
Duane G. Froese
CORRESPONDING AUTHOR
Department of Earth and Atmospheric Sciences, 1–26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada
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Benjamin J. Stoker, Helen E. Dulfer, Chris R. Stokes, Victoria H. Brown, Christopher D. Clark, Colm Ó Cofaigh, David J. A. Evans, Duane Froese, Sophie L. Norris, and Martin Margold
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The retreat of the northwestern Laurentide Ice Sheet allows us to investigate how the ice drainage network evolves over millennial timescales and understand the influence of climate forcing, glacial lakes, and the underlying geology on the rate of deglaciation. We reconstruct the changes in ice flow at 500-year intervals and identify rapid reorganisations of the drainage network, including variations in ice streaming that we link to climatically-driven changes in the ice sheet surface slope.
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Effects of topographic and meteorological parameters on the surface area loss of ice aprons in the Mont Blanc massif (European Alps)
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Formation of ribbed bedforms below shear margins and lobes of palaeo-ice streams
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The Cryosphere, 16, 4251–4271, https://doi.org/10.5194/tc-16-4251-2022, https://doi.org/10.5194/tc-16-4251-2022, 2022
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Astrid Oetting, Emma C. Smith, Jan Erik Arndt, Boris Dorschel, Reinhard Drews, Todd A. Ehlers, Christoph Gaedicke, Coen Hofstede, Johann P. Klages, Gerhard Kuhn, Astrid Lambrecht, Andreas Läufer, Christoph Mayer, Ralf Tiedemann, Frank Wilhelms, and Olaf Eisen
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Short summary
Associated with climate change between the Last Glacial Maximum and the current interglacial period, we reconstruct the behaviour of the southwestern Laurentide Ice Sheet, which covered the Canadian Prairies, using detailed landform mapping. Our reconstruction depicts three shifts in the ice sheet’s dynamics. We suggest these changes resulted from ice sheet thinning triggered by abrupt climatic change. However, we show that regional lithology and topography also play an important role.
Associated with climate change between the Last Glacial Maximum and the current interglacial...
