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TC | Volume 12, issue 8
The Cryosphere, 12, 2609-2636, 2018
https://doi.org/10.5194/tc-12-2609-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
The Cryosphere, 12, 2609-2636, 2018
https://doi.org/10.5194/tc-12-2609-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 14 Aug 2018

Research article | 14 Aug 2018

Channelized, distributed, and disconnected: subglacial drainage under a valley glacier in the Yukon

Camilo Rada and Christian Schoof
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Cited articles  
Alley, R., Blankenship, D., Bentley, C., and Rooney, S.: Deformation of till beneath ice stream B, West Antarctica, Nature, 322, 57–59, 1986. a
Andrews, L., Catania, G., Hoffman, M., Gulley, J., Lüthi, M., Ryser, C., Hawley, R., and Neumann, T.: Direct observations of evolving subglacial drainage beneath the Greenland Ice Sheet, Nature, 514, 80–83, 2014. a, b, c, d
Bartholomaus, T., Anderson, R., and Anderson, S.: 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, https://doi.org/10.3189/002214311798843269, 2011. a, b
Blake, E., Fischer, U., and Clarke, G.: Direct measurement of sliding at the glacier bed, J. Glaciol., 40, 559–599, 1994. a
Boulton, G. and Hindmarsh, R.: Sediment deformation beneath glaciers: rheology and geological consequences, J. Geophys. Res., 92, 9059–9082, 1987. a
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We analyse a large glacier borehole pressure dataset and provide a holistic view of the observations, suggesting a consistent picture of the evolution of the subglacial drainage system. Some aspects are consistent with the established understanding and others ones are not. We propose that most of the inconsistencies arise from the capacity of some areas of the bed to become hydraulically isolated. We present an adaptation of an existing drainage model that incorporates this phenomena.
We analyse a large glacier borehole pressure dataset and provide a holistic view of the...
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