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Climate of the Past An interactive open-access journal of the European Geosciences Union
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Volume 12, issue 8
Clim. Past, 12, 1601–1617, 2016
https://doi.org/10.5194/cp-12-1601-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Clim. Past, 12, 1601–1617, 2016
https://doi.org/10.5194/cp-12-1601-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

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 et al.

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Cited articles

Alley, R.: Towards a hydrologic model for computerized ice-sheet simulations, Hydrol. Process., 10, 649–660, 1996.
Álvarez-Solas, J. and Ramstein, G.: On the Triggering Mechanism of Heinrich Events, P. Natl. Acad. Sci. USA, 108, E1359–E1360, https://doi.org/10.1073/pnas.1116575108, 2011.
Álvarez-Solas, J., Montoya, M., Ritz, C., Ramstein, G., Charbit, S., Dumas, C., Nisancioglu, K., Dokken, T., and Ganopolski, A.: Heinrich event 1: an example of dynamical ice-sheet reaction to oceanic changes, Clim. Past, 7, 1297–1306, https://doi.org/10.5194/cp-7-1297-2011, 2011.
Bond, G. C. and Lotti, R.: Iceberg Discharges into the North Atlantic on Millennial Time Scales During the Last Glaciation, Science, 267, 1005–1010, https://doi.org/10.1126/science.267.5200.1005, 1995.
Broecker, W. S.: Massive iceberg discharges as triggers for global climate change, Nature, 372, 421–424, 1994.
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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.
There are observations from ocean sediment cores that during the last ice age the Laurentide Ice...
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