Item: Comparison of Shock Waves Provoked by Various Artificial Avalanche Release Techniques, and of their Effects on the Snowpack
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Title: Comparison of Shock Waves Provoked by Various Artificial Avalanche Release Techniques, and of their Effects on the Snowpack
Proceedings: International Snow Science Workshop, Davos 2009, Proceedings
Authors:
- Dr. P. Berthet-Rambaud [ IMND Engineering, Sainte-Hélène du Lac, France ]
Date: 2009
Abstract: the development of new systems should open new methods and improve efficiency of avalanche artificial releases. Current explosions are calibrated more regarding the possible and available explosible materials (solid or gas) than the snow itself. For many years and still now, one of the main parameter is the global supposed power of the explosion as expressed by the famous TNT equivalence. But, due to the diversity of snow at different scales (flakes, layer stack...), it is obvious that there is not a unique answer and that power is not the only way. In order to complete knowledge in this field, an experimental campaign has been performed to measure direct incident shock wave from different explosion sources and devices used for avalanches release. To assess the effect of this wave on the snow according to its quality, a protocol has been also initiated to evaluate the absorption of the snow and its ability to transmit the wave either to concentrate the effect through a pinpoint intensity or to spread it on a larger area with a distributed intensity.
Object ID: issw-2009-0328-0329.pdf
Language of Article: English
Presenter(s): Unknown
Keywords: artificial release, gas explosion, aerial overpressure
Page Number(s): 328-329
Subjects: shock waves artificial avalanche release techniques snowpack
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