Grounding line migration through the calving season at Jakobshavn Isbræ, Greenland, observed with terrestrial radar interferometry

Xie, Surui; Dixon, Timothy H.; Voytenko, Denis; Deng, Fanghui; Holland, David M.

doi:https://doi.org/10.5194/tc-12-1387-2018

Articles | Volume 12, issue 4

https://doi.org/10.5194/tc-12-1387-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/tc-12-1387-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 12, issue 4

Research article

|

17 Apr 2018

Research article |

| 17 Apr 2018

Grounding line migration through the calving season at Jakobshavn Isbræ, Greenland, observed with terrestrial radar interferometry

Surui Xie, Timothy H. Dixon, Denis Voytenko, Fanghui Deng, and David M. Holland

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Final revised paper (published on 17 Apr 2018)
Supplement to the final revised paper
Preprint (discussion started on 05 Jan 2018)
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: 'Grounding line migration through the calving season of Jakobshavn Isbræ, Greenland, observed with terrestrial radar interferometry', Anonymous Referee #1, 02 Feb 2018
- AC1: 'Responses to anonymous referee #1', Surui Xie, 26 Feb 2018
RC2: 'Review of: Grounding line migration through the calving season of Jakobshavn Isbræ, Greenland, observed with terrestrial radar interferometry', Anonymous Referee #2, 15 Feb 2018
- AC2: 'Responses to anonymous referee #2', Surui Xie, 26 Feb 2018

Peer-review completion

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

AR by Surui Xie on behalf of the Authors (03 Mar 2018) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (12 Mar 2018) by Olaf Eisen

AR by Surui Xie on behalf of the Authors (17 Mar 2018) Author's response Manuscript

ED: Publish as is (27 Mar 2018) by Olaf Eisen

Short summary

Time-varying velocity and topography of the terminus of Jakobshavn Isbræ were observed with a terrestrial radar interferometer in three summer campaigns (2012, 2015, 2016). Surface elevation and tidal responses of ice speed suggest a narrow floating zone in early summer, while in late summer the entire glacier is likely grounded. We hypothesize that Jakobshavn Isbræ advances a few km in winter to form a floating zone but loses this floating portion in the subsequent summer through calving.