Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean

Ramage, Justine L.; Irrgang, Anna M.; Morgenstern, Anne; Lantuit, Hugues

doi:https://doi.org/10.5194/bg-15-1483-2018

Articles | Volume 15, issue 5

https://doi.org/10.5194/bg-15-1483-2018

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

Special issue:

Changing Permafrost in the Arctic and its Global Effects in...

https://doi.org/10.5194/bg-15-1483-2018

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

Articles | Volume 15, issue 5

Research article

|

13 Mar 2018

Research article |

| 13 Mar 2018

Increasing coastal slump activity impacts the release of sediment and organic carbon into the Arctic Ocean

Justine L. Ramage, Anna M. Irrgang, Anne Morgenstern, and Hugues Lantuit

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Final revised paper (published on 13 Mar 2018)
Supplement to the final revised paper
Preprint (discussion started on 26 Oct 2017)
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 Ramage et al', Anonymous Referee #1, 25 Nov 2017
- AC1: 'Answers to Reviewer 1', Justine Ramage, 18 Jan 2018
RC2: 'Review comments', Anonymous Referee #2, 26 Nov 2017
- AC2: 'Answers to Reviewer 2', Justine Ramage, 18 Jan 2018

Peer-review completion

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

ED: Publish subject to minor revisions (review by editor) (31 Jan 2018) by Bo Elberling

AR by Justine Ramage on behalf of the Authors (01 Feb 2018) Author's response Manuscript

ED: Publish as is (03 Feb 2018) by Bo Elberling

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Short summary

We describe the evolution of thaw slumps between 1952 and 2011 along the Yukon Coast, Canada, and calculate the contribution of the slumps to the carbon budget in this area. The number of slumps has increased by 73 % over the period. These slumps displaced more than 16 billion m³ of material and mobilized 146 t of carbon. This represents 0.6 % of the annual carbon flux released from shoreline retreat, which shows that the contribution of slumps to the nearshore carbon budget is non-negligible.