Dynamic influence of pinning points on marine ice-sheet stability: a numerical study in Dronning Maud Land, East Antarctica

Favier, Lionel; Pattyn, Frank; Berger, Sophie; Drews, Reinhard

doi:https://doi.org/10.5194/tc-10-2623-2016

Articles | Volume 10, issue 6

https://doi.org/10.5194/tc-10-2623-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/tc-10-2623-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 10, issue 6

Research article

|

09 Nov 2016

Research article |

| 09 Nov 2016

Dynamic influence of pinning points on marine ice-sheet stability: a numerical study in Dronning Maud Land, East Antarctica

Lionel Favier, Frank Pattyn, Sophie Berger, and Reinhard Drews

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Final revised paper (published on 09 Nov 2016)
Supplement to the final revised paper
Preprint (discussion started on 16 Jun 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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RC1: 'Review', Robert Arthern, 29 Jul 2016
RC2: 'Review of ``Dynamic influence of pinning points on marine ice-sheet stability''', Anonymous Referee #2, 19 Aug 2016
AC1: 'detailed response to the reviewers, modifications made on manuscript tc-2016-144 and on Supplementary Material', Lionel Favier, 23 Sep 2016

Peer-review completion

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

AR by Anna Wenzel on behalf of the Authors (27 Sep 2016) Author's response

ED: Referee Nomination & Report Request started (15 Oct 2016) by G. Hilmar Gudmundsson

RR by Anonymous Referee #2 (18 Oct 2016)

RR by Robert Arthern (20 Oct 2016)

ED: Publish as is (22 Oct 2016) by G. Hilmar Gudmundsson

Short summary

We demonstrate the short-term unstable retreat of an East Antarctic outlet glacier triggered by imposed sub-ice-shelf melt, compliant with current values, using a state-of-the-art ice-sheet model. We show that pinning points – topographic highs in contact with the ice-shelf base – have a major impact on ice-sheet stability and timing of grounding-line retreat. The study therefore calls for improving our knowledge of sub-ice-shelf bathymetry in order to reduce uncertainties in future ice loss.