Articles | Volume 12, issue 10
The Cryosphere, 12, 3333–3353, 2018
https://doi.org/10.5194/tc-12-3333-2018
The Cryosphere, 12, 3333–3353, 2018
https://doi.org/10.5194/tc-12-3333-2018

Research article 17 Oct 2018

Research article | 17 Oct 2018

A temperature- and stress-controlled failure criterion for ice-filled permafrost rock joints

Philipp Mamot et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Philipp Mamot on behalf of the Authors (04 Aug 2018)  Author's response    Manuscript
ED: Publish subject to technical corrections (31 Aug 2018) by Christian Hauck
AR by Philipp Mamot on behalf of the Authors (11 Sep 2018)  Author's response    Manuscript
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Short summary
Most of the observed failures in permafrost-affected alpine rock walls are likely triggered by the mechanical destabilisation of warming bedrock permafrost including ice-filled joints. We present a systematic study of the brittle shear failure of ice and rock–ice contacts along rock joints in a simulated depth ≤ 30 m and at temperatures from −10 to −0.5 °C. Warming and sudden reduction in rock overburden due to the detachment of an upper rock mass lead to a significant drop in shear resistance.