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

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

doi:https://doi.org/10.5194/cp-12-1601-2016

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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Final revised paper (published on 03 Aug 2016)
Supplement to the final revised paper
Preprint (discussion started on 08 Feb 2016)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of Roberts et al.', Lev Tarasov, 15 Mar 2016
RC2: 'Review of Roberts et al.', Anonymous Referee #2, 15 Mar 2016
AC1: 'Response to reviewer comments', William Roberts, 03 May 2016

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Reconsider after major revisions (05 May 2016) by Volker Rath

AR by William Roberts on behalf of the Authors (10 May 2016) Author's response Manuscript

ED: Referee Nomination & Report Request started (23 May 2016) by Volker Rath

RR by Anonymous Referee #2 (18 Jun 2016)

ED: Publish subject to minor revisions (review by Editor) (06 Jul 2016) by Volker Rath

AR by William Roberts on behalf of the Authors (12 Jul 2016) Author's response Manuscript

ED: Publish as is (13 Jul 2016) by Volker Rath

AR by William Roberts on behalf of the Authors (13 Jul 2016)

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.