Climate of the Past
Climate of the Past
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Articles | Volume 12, issue 8
Articles | Volume 12, issue 8
https://doi.org/10.5194/cp-12-1601-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/cp-12-1601-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 12, issue 8
Research article
 | 
03 Aug 2016
Research article |  | 03 Aug 2016

The role of basal hydrology in the surging of the Laurentide Ice Sheet

William H. G. Roberts, Antony J. Payne, and Paul J. Valdes

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Short summary
There are observations from ocean sediment cores that during the last ice age the Laurentide Ice Sheet, which sat over North America, periodically surged. In this study we show the role that water at the base of an ice sheet plays in these surges. We show that with a more realistic representation of water drainage at the base of the ice sheet than usually used, these surges can still occur and that they are triggered by an internal ice sheet instability; no external trigger is needed.
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