Articles | Volume 10, issue 5
The Cryosphere, 10, 1915–1932, 2016
The Cryosphere, 10, 1915–1932, 2016

Research article 05 Sep 2016

Research article | 05 Sep 2016

Sliding of temperate basal ice on a rough, hard bed: creep mechanisms, pressure melting, and implications for ice streaming

Maarten Krabbendam

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Cited articles

Alley, R. B.: Flow-law hypotheses for ice-sheet modeling, J. Glaciol., 38, 245–256,, 1992.
Alley, R. B., Blankenship, D. D., Bentley, C. R., and Rooney, S: Till beneath ice stream B: 3. Till deformation: evidence and implications, J. Geophys. Res., 95, 8921–8929,, 1987.
Aschwanden, A. and Blatter, H.: Meltwater production due to strain heating in Storglaciären, Sweden, J. Geophys. Res., 110, F04024,, 2005.
Azuma, N.: A flow law for anisotropic ice and its application to ice sheets, Earth Planet. Sci. Lett., 128, 601–614,, 1994.
Barnes, P. and Tabor, D.: Plastic flow and pressure melting in the deformation of ice I, Nature, 210, 878–882,, 1966.
Short summary
The way that ice moves over rough ground at the base of an ice sheet is important to understand and predict the behaviour of ice sheets. Here, I argue that if basal ice is at the melting temperature, as is locally the case below the Greenland Ice Sheet, this basal motion is easier and faster than hitherto thought. A thick (tens of metres) layer of ice at the melting temperature may better explain some ice streams and needs to be taken into account when modelling future ice sheet behaviour.