Observing Muostakh disappear: permafrost thaw subsidence and erosion of a ground-ice-rich island in response to arctic  summer warming and sea ice reduction

Günther, F.; Overduin, P. P.; Yakshina, I. A.; Opel, T.; Baranskaya, A. V.; Grigoriev, M. N.

doi:https://doi.org/10.5194/tc-9-151-2015

Articles | Volume 9, issue 1

https://doi.org/10.5194/tc-9-151-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/tc-9-151-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 1

Research article

|

28 Jan 2015

Research article |

| 28 Jan 2015

Observing Muostakh disappear: permafrost thaw subsidence and erosion of a ground-ice-rich island in response to arctic summer warming and sea ice reduction

F. Günther, P. P. Overduin, I. A. Yakshina, T. Opel, A. V. Baranskaya, and M. N. Grigoriev

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Final revised paper (published on 28 Jan 2015)
Preprint (discussion started on 15 Aug 2013)

Interactive discussion

Status: closed

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

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RC C2335: 'Review of ‘Observing Muostakh Island Disappear’', Anonymous Referee #1, 06 Nov 2013
- AC C2821: 'authors' resonse to referee \#1', F. Günther, 23 Dec 2013
RC C2370: 'Review of Gunther et al', Anonymous Referee #2, 11 Nov 2013
- AC C2831: 'authors' response to referee \#2', F. Günther, 23 Dec 2013

Short summary

Coastal erosion rates at Muostakh Island (eastern Siberian Arctic) have doubled, based on remotely sensed observations of land loss, and therefore the island will disappear prematurely. Based on analyses of seasonal variability of permafrost thaw, thermo-erosion increases by 1.2m per year when summer temperatures rise by 1°C. Due to rapid permafrost thaw, the land surface is subsiding up to 11cm per year, based on comparison of elevation changes and active layer thaw depth.