The Cryosphere
The Cryosphere
The Cryosphere
Articles | Volume 15, issue 2
Articles | Volume 15, issue 2
The Cryosphere, 15, 897–907, 2021
https://doi.org/10.5194/tc-15-897-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
The Cryosphere, 15, 897–907, 2021
https://doi.org/10.5194/tc-15-897-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 15, issue 2

Research article 19 Feb 2021

Research article | 19 Feb 2021

The cooling signature of basal crevasses in a hard-bedded region of the Greenland Ice Sheet

Ian E. McDowell et al.

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Latest update: 21 Sep 2021
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Short summary
Ice temperature controls rates of internal deformation and the onset of basal sliding. To identify heat transfer mechanisms and englacial heat sources within Greenland's ablation zone, we examine a 2–3-year continuous temperature record from nine full-depth boreholes. Thermal decay after basal crevasses release heat in the near-basal ice likely produces the observed cooling. Basal crevasses in Greenland can affect the basal ice rheology and indicate a potentially complex basal hydrologic system.
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