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The Cryosphere An interactive open-access journal of the European Geosciences Union
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TC | Volume 12, issue 5
The Cryosphere, 12, 1699–1713, 2018
https://doi.org/10.5194/tc-12-1699-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
The Cryosphere, 12, 1699–1713, 2018
https://doi.org/10.5194/tc-12-1699-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 18 May 2018

Research article | 18 May 2018

Tidal bending of ice shelves as a mechanism for large-scale temporal variations in ice flow

Sebastian H. R. Rosier and G. Hilmar Gudmundsson
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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR by Sebastian Rosier on behalf of the Authors (09 Mar 2018)  Author's response    Manuscript
ED: Publish subject to minor revisions (review by editor) (30 Mar 2018) by Olivier Gagliardini
AR by Sebastian Rosier on behalf of the Authors (25 Apr 2018)  Author's response    Manuscript
ED: Publish as is (27 Apr 2018) by Olivier Gagliardini
Publications Copernicus
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Short summary
Ocean tides cause strong modulation of horizontal ice shelf flow, most notably at a fortnightly frequency that is absent in the vertical tidal forcing. We propose that tidal bending in the margins of the ice shelf produces sufficiently large stresses that the effective viscosity of ice in these regions is reduced during high and low tide. This effect can explain many features of the observed behaviour and implies that ice shelves in areas with strong tides move faster than they otherwise would.
Ocean tides cause strong modulation of horizontal ice shelf flow, most notably at a fortnightly...
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