Articles | Volume 14, issue 9
The Cryosphere, 14, 2949–2976, 2020
https://doi.org/10.5194/tc-14-2949-2020
The Cryosphere, 14, 2949–2976, 2020
https://doi.org/10.5194/tc-14-2949-2020
Research article
10 Sep 2020
Research article | 10 Sep 2020

A model for interaction between conduits and surrounding hydraulically connected distributed drainage based on geomorphological evidence from Keewatin, Canada

Emma L. M. Lewington et al.

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Cited articles

Alley, R. B., Cuffey, K. M., Evenseon, E. B., Strasser, J. C., Lawson, D. E., and Larson, G. J.: How glaciers entrain and transport basal sediment : physical constraints, Quatern. Sci. Rev., 16, 1017–1038,1997. 
Alley, R. B., Cuffey, K. M., and Zoet, L. K.: Glacial erosion: status and outlook, Ann. Glaciol., 60, 1–13, 2019. 
Andrews, L. C., Catania, G. A., Hoffman, M. J., Gulley, J. D., Lüthi, M. P., Ryser, C., Hawley, R. L. and Neumann, T. A. : Direct observations of evolving subglacial drainage beneath the Greenland Ice Sheet, Nature, 514, 80–83, 2014. 
Aylsworth, J. M. and Shilts, W. W.: Glacial features around the Keewatin Ice Divide: Districts of Mackenzie and Keewatin, Geological Survey of Canada, Map 24-1987, 1 : 1 000 000, 1989. 
Aylsworth, J. M., Shilts, W. W., Russel, H. A. J., and Pyne, D. M.: Eskers around the Keewatin Ice Divide: Northwest Territories and Nunavut, Geological Survey of Canada, Open File, 7047, 2012. 
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Short summary
We map visible traces of subglacial meltwater flow across Keewatin, Canada. Eskers are commonly observed to form within meltwater corridors up to a few kilometres wide, and we interpret different traces to have formed as part of the same integrated drainage system. In our proposed model, we suggest that eskers record the imprint of a central conduit while meltwater corridors represent the interaction with the surrounding distributed drainage system.