AN APPROACH TO THE CONSOLIDATION OF SNOW.
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
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A consolidation theory is developed for an age-hardened snow under uniaxial stress in the porosity range of 35 to 55 by considering one mechanism, viz., viscous flow of interparticle bonds. For a uniaxial stress sigma, the differential equation for porosity n in terms of time t is shown to be 11-n dndt nu sigma neta 1-an where a and nu are structural parameters and eta is the coefficient of viscosity of ice. Comparison of this equation and the integrated form with existing data predicts consistent and reasonable values for a. The predicted values of etanu range from 0.01 to 100 times the published values for eta, which may indicate that nu, and hence the consolidation rate, is greatly affected by the diagenetic history of the snow and the conditions of experimentation. Author
- Snow, Ice and Permafrost