Articles | Volume 9, issue 3
The Cryosphere, 9, 1183–1190, 2015
https://doi.org/10.5194/tc-9-1183-2015
The Cryosphere, 9, 1183–1190, 2015
https://doi.org/10.5194/tc-9-1183-2015

Research article 05 Jun 2015

Research article | 05 Jun 2015

Winter speed-up of quiescent surge-type glaciers in Yukon, Canada

T. Abe and M. Furuya

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Cited articles

Bartholomaus, T. C., Anderson, R. S., and Anderson, S. P.: Growth and collapse of the distributed subglacial hydrologic system of Kennicott Glacier, Alaska, USA, and its effects on basal motion, J. Glaciol., 57, 985–1002, 2011.
Bartholomew, I., Nienow, P., Mair, D., Hubbard, A., King, M. A., and Sole, A.: Seasonal evolution of subglacial drainage and acceleration in a Greenland outlet glacier, Nat. Geosci., 3, 408–411, https://doi.org/10.1038/ngeo863, 2010.
Burgess, E. W., Forster, R. R., Larsen, C. F., and Braun, M.: Surge dynamics on Bering Glacier, Alaska, in 2008–2011, The Cryosphere, 6, 1251–1262, https://doi.org/10.5194/tc-6-1251-2012, 2012.
Burgess, E. W., Foster, R. R., and Larson C. F.: Flow velocities of Alaskan glaciers, Nat. Comms., 4, 2146, https://doi.org/10.1038/ncomms3146, 2013a.
Burgess, E. W., Larson C. F. and Foster, R. R.: Summer melt regulates winter glacier flow speeds throughout Alaska, Geophys. Res. Lett., 40, 6160–6164, https://doi.org/10.1002/2013GL058228, 2013b.
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Short summary
Whereas glacier surge is known to often initiate in winter, we show significant winter speed-up signals in the upstream region even at quiescent surge-type glaciers in Yukon, Canada. Moreover, the winter speed-up region expanded from upstream to downstream. Given the absence of surface meltwater input in winter, we speculate the presence of englacial water storage that does not directly connect to the surface, yet can promote basal sliding through increased water pressure.