Articles | Volume 14, issue 11
The Cryosphere, 14, 3747–3759, 2020
https://doi.org/10.5194/tc-14-3747-2020
The Cryosphere, 14, 3747–3759, 2020
https://doi.org/10.5194/tc-14-3747-2020

Research article 12 Nov 2020

Research article | 12 Nov 2020

Possible impacts of a 1000 km long hypothetical subglacial river valley towards Petermann Glacier in northern Greenland

Christopher Chambers et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (further review by editor and referees) (02 Oct 2019) by Kenichi Matsuoka
AR by Christopher Chambers on behalf of the Authors (03 Feb 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (13 Feb 2020) by Kenichi Matsuoka
RR by Anonymous Referee #1 (08 Apr 2020)
ED: Publish subject to minor revisions (review by editor) (15 May 2020) by Kenichi Matsuoka
AR by Anna Wenzel on behalf of the Authors (17 Jun 2020)  Author's response
ED: Publish subject to minor revisions (review by editor) (22 Jul 2020) by Kenichi Matsuoka
AR by Christopher Chambers on behalf of the Authors (29 Aug 2020)  Author's response    Manuscript
ED: Publish as is (04 Sep 2020) by Kenichi Matsuoka
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Short summary
The topography of the rock below the Greenland ice sheet is not well known. One long valley appears as a line of dips because of incomplete data. So we use ice model simulations that unblock this valley, and these create a watercourse that may represent a form of river over 1000 km long under the ice. When we melt ice at the bottom of the ice sheet only in the deep interior, water can flow down the valley only when the valley is unblocked. It may have developed while an ice sheet was present.