On the instability of avalanching glaciers
Authors: Pralong, Antoine; Funk, Martin
Source: Journal of Glaciology, Volume 52, Number 176, January 2006 , pp. 31-48(18)
Publisher: International Glaciological Society
Abstract:The instability of hanging glaciers and more generally of avalanching glaciers is discussed on the basis of observations performed on several glaciers located in the European Alps. A classification of avalanching glaciers is proposed, which allows a primary appreciation of the danger inherent in these glaciers. On the basis of field observations and results of numerical simulations of crevassing, the fracture processes which lead to major icefalls, as well as their recurrence, are analyzed. A method for predicting the time of failure is then discussed. The disaggregation of the unstable ice masses usually observed prior to large icefalls is investigated and its implications for the forecasting of icefalls analyzed.
Document Type: Research article
Publication date: 2006-01-01
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