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Rock falls in the Mont Blanc Massif in 2007 and 2008


Ravanel, L; Allignol, F; Deline, P; Gruber, S; Ravello, M (2010). Rock falls in the Mont Blanc Massif in 2007 and 2008. Landslides, 7(4):493-501.

Abstract

Due to a lack of systematic observations, the intensity and volume of rock falls and rock avalanches in high mountain areas are still poorly known. Nevertheless, these phenomena could have burly consequences. To document present rock falls, a network of observers (guides, mountaineers, and hut wardens) was initiated in the Mont Blanc Massif in 2005 and became fully operational in 2007. This article presents data on the 66 rock falls (100 m3 ≤ V ≤ 50,000 m3) documented in 2007 (n = 41) and 2008 (n = 25). Most of the starting zones are located in warm permafrost areas, which are most sensitive to warming, and only four rock falls are clearly out of permafrost area. Different elements support permafrost degradation as one of the main triggering factors of present rock falls in high mountain areas.

Due to a lack of systematic observations, the intensity and volume of rock falls and rock avalanches in high mountain areas are still poorly known. Nevertheless, these phenomena could have burly consequences. To document present rock falls, a network of observers (guides, mountaineers, and hut wardens) was initiated in the Mont Blanc Massif in 2005 and became fully operational in 2007. This article presents data on the 66 rock falls (100 m3 ≤ V ≤ 50,000 m3) documented in 2007 (n = 41) and 2008 (n = 25). Most of the starting zones are located in warm permafrost areas, which are most sensitive to warming, and only four rock falls are clearly out of permafrost area. Different elements support permafrost degradation as one of the main triggering factors of present rock falls in high mountain areas.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Geography
Dewey Decimal Classification:910 Geography & travel
Language:English
Date:2010
Deposited On:12 Feb 2011 16:41
Last Modified:05 Apr 2016 14:40
Publisher:Springer
ISSN:1612-510X
Publisher DOI:10.1177/0959683610374887
Permanent URL: http://doi.org/10.5167/uzh-43841

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