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Abstract: In this work, we study the size of the particles involved in a powder snowavalanche phenomenon. To determine these sizes, we study all the phenomena theparticles have to face before arriving in the -body- of the avalanche. We studythe boundary layer which is at the bottom of the avalanche. We determine, withthe help of experimental data, the range of size of the particles that can beentrained by the avalanche. We then examine the possibility for these particlesto reach the top of the boundary layer, and so to take part in the avalanche.Our final result is that the more frequent particles suspended in a powder snowavalanche have a size lower than 200 micrometers.



Author: Marie Rastello

Source: https://arxiv.org/







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