Avalanche Dynamics. Review of Experiments and Theoretical Models of Flow and Powder-Snow Avalanches
Abstract The paper of which this is an extended abstract reviews theoretical formulations for flow and airborne powder-snow avalanches. First powder-snow avalanches are considered as plane turbulent gravity currents. Then we propose a two-phase model describing powder-snow avalanches as turbulent bi...
Published in: | Journal of Glaciology |
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Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1983
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Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0022143000008339 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000008339 |
Summary: | Abstract The paper of which this is an extended abstract reviews theoretical formulations for flow and airborne powder-snow avalanches. First powder-snow avalanches are considered as plane turbulent gravity currents. Then we propose a two-phase model describing powder-snow avalanches as turbulent binary mixtures of snow granules and air. An analogy is postulated between flow avalanches and the rapid shear flow of granular materials which leads to a non-polar continuum with microstructure taking into account the fluctuation energy of the snow granules. |
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