Articles | Volume 15, issue 3
The Cryosphere, 15, 1435–1451, 2021
https://doi.org/10.5194/tc-15-1435-2021
The Cryosphere, 15, 1435–1451, 2021
https://doi.org/10.5194/tc-15-1435-2021

Research article 22 Mar 2021

Research article | 22 Mar 2021

Basal traction mainly dictated by hard-bed physics over grounded regions of Greenland

Nathan Maier et al.

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Latest update: 21 Sep 2021
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Short summary
In Greenland, ice motion and the surface geometry depend on the friction at the bed. We use satellite measurements and modeling to determine how ice speeds and friction are related across the ice sheet. The relationships indicate that ice flowing over bed bumps sets the friction across most of the ice sheet's on-land regions. This result helps simplify and improve our understanding of how ice motion will change in the future.