Articles | Volume 12, issue 4
The Cryosphere, 12, 1531–1550, 2018
https://doi.org/10.5194/tc-12-1531-2018

Special issue: The evolution of permafrost in mountain regions

The Cryosphere, 12, 1531–1550, 2018
https://doi.org/10.5194/tc-12-1531-2018

Research article 27 Apr 2018

Research article | 27 Apr 2018

Ground thermal and geomechanical conditions in a permafrost-affected high-latitude rock avalanche site (Polvartinden, northern Norway)

Regula Frauenfelder et al.

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Short summary
On 26 June 2008, a rock avalanche with a volume of ca. 500 000 m3 detached in the north-east facing slope of Polvartinden, a high-alpine peak in northern Norway. Ice was observed in the failure zone shortly after the rock avalanche, leading to the assumption that degrading permafrost might have played an important role in the detaching of the Signaldalen rock avalanche. Here, we present a four-year series of temperature measurements from the site and subsequent temperature modelling results.