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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Nat. Hazards Earth Syst. Sci. Discuss., https://doi.org/10.5194/nhess-2017-437,https://doi.org/10.5194/nhess-2017-437, 2017
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Cited articles

Allen, S. and Huggel, C.: Extremely warm temperatures as a potential cause of recent high mountain rockfall, Global Planet. Change, 107, 59–69, 2013.
Allen, S., Cox, S. C., and Owens, I. F.: Rock avalanches and other landslides in the central Southern Alps of New Zealand: a regional study considering possible climate change impacts, Landslides, 8, 33–48, https://doi.org/10.1007/s10346-010-0222-z, 2011.
Andresen, A.: Caledonian Terranes of Northern Norway and their characteristics: Trabajos de Geologia, Univ. de Oviedo, 17, 103–117, 1988.
Arenson, L. and Jakob, M.: Permafrost-Related Geohazards and Infrastructure Construction in Mountainous Environments, Oxford Research Encyclopedia of Natural Hazard Science, Oxford University Press, USA, https://doi.org/10.1093/acrefore/9780199389407.013.292, 2017.
Arenson, L. and Springman, S.: Triaxial constant stress and constant strain rate test on ice-rich permafrost samples, Can. Geotech. J., 42, 412–430, 2005.
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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.