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The Cryosphere An interactive open-access journal of the European Geosciences Union
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Volume 10, issue 1
The Cryosphere, 10, 193–225, 2016
https://doi.org/10.5194/tc-10-193-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Interactions between climate change and the Cryosphere: SVALI,...

The Cryosphere, 10, 193–225, 2016
https://doi.org/10.5194/tc-10-193-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 21 Jan 2016

Research article | 21 Jan 2016

Sheet, stream, and shelf flow as progressive ice-bed uncoupling: Byrd Glacier, Antarctica and Jakobshavn Isbrae, Greenland

T. Hughes et al.
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Cited articles  
Anandakrishnan, A. and Alley, R. B.: Tidal forcing of basal seismicity of ice stream C, West Antarctica, observed far inland, J. Geophys. Res., 102, 15183–15196, 1997.
Benn, D., Gulley, J., Luckman, A., Adamek, A., and Glowacki, P.: Englacial drainage system formed by hydrologically driven crevasse propagation, J. Glaciol., 55, 513–523, 2009.
Bindschadler, R. A.: Jakobshavns Glacier drainage basin: a balance assessment, J. Geophys. Res., 89, 2066–2072, 1984.
Blatter, H.: Velocity and stress fields in grounded glaciers: a simple algorithm for including deviatoric stress gradients, J. Glaciol., 41, 333–344, 1995.
Blatter, H., Greve, R., and Abe-Ouchi, A.: Present State and Prospects of Ice Sheet and Glacier Modelling, Surv. Geophys., Springer, New York, 2011.
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Short summary
The Antarctic and Greenland ice sheets are drained primarily by fast ice streams that end as ice shelves if they become afloat. Smooth transitions from slow sheet flow to fast stream flow to confined shelf flow are obtained and applied to Byrd Glacier in Antarctica after two upstream subglacial lakes suddenly drained in 2006, and to Jakobshavn Isbrae in Greenland after a confined ice shelf suddenly disintegrated in 2002. Byrd Glacier quickly stabilized, but Jakobshavn Isbrae remains unstable.
The Antarctic and Greenland ice sheets are drained primarily by fast ice streams that end as ice...
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