Cornice dynamics and meteorological control at Gruvefjellet, Central Svalbard.
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Christiansen, Hanne H.
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Cornice fall avalanches endanger life and infrastructure in Nybyen, a part of Svalbard’s main settlement Longyearbyen, located at 78◦ N in the High Arctic. Thus, cornice dynamics – accretion, cracking and eventual failure – and their controlling meteorological factors were studied along the ridgeline of the Gruvefjellet plateau mountain above Nybyen in the period 2008–2010. Using two automatic time-lapse cameras and hourly meteorological data in combination with intensive field observations on the Gruvefjellet plateau, cornice process dynamics were investigated in larger detail than previously possible. Cornice accretion starts directly following the first snowfall in late September and October, and proceeds throughout the entire snow season under a wide range of air temperature conditions that the maritime winter climate of Svalbard provides. Cornice accretion is particularly controlled by distinct storm events, with a prevailing wind direction perpendicular to the ridge line and aver.....
Sustainable Development Goals (SDG)11
Best Practice TypeManual (incl. handbook, guide, cookbook etc)
CitationVogel, S.; Eckerstorfer, M. and Christiansen, H. H. (2012) Cornice dynamics and meteorological control at Gruvefjellet, Central Svalbard. The Cryosphere, 6, pp.157–171, DOI: https://doi.org/10.5194/tc-6-157-2012
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