Item: Correlation of fast rates of snow glide with full-depth avalanche occurrence
Title: Correlation of fast rates of snow glide with full-depth avalanche occurrence
Proceedings: Proceedings of the 1994 International Snow Science Workshop, Snowbird, Utah, USA
Authors: J.A. Clarke and D.M. McClung
Abstract: Snow glide is the translational slip of the entire snow pack over a sloping ground surface. Requirements for snow glide have been established from field measurements by in der Gand and Zupancic (1966) and by McClung (1981) include: - a relatively smooth surface - snow/ground interface temperatures above 0° C, thus guaranteeing the presence of water - 15° slopes or greater for roughnesses typical of alpine terrain Free-water at the snow/ground interface is a very important controlling mechanism for snow glide. Free-water at the snow/ground interface affects the material properties of snow and promotes separation of the snow pack from the ground, allowing for higher rates of snow glide (McClung and Clarke, 1987). It is thought that intervals of rapid snow glide precede, or at least coincide with, the release of full-depth avalanches. Full..
Keywords: avalanche forecasting, snow gliding, avalanche release, snow pack
Digital Abstract Not Available