Please use this identifier to cite or link to this item:
Title: Theory of metamorphism of wet snow
Authors: Colbeck, Samuel C.
Keywords: Avalanches
Grain growth
Snow vehicles
Issue Date: Dec-1973
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Research report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 313.
Description: Research report
Abstract: Grain growth, bond growth and densification of wet snow are described in terms of the distribution of equilibrium temperature in the snow matrix. At high water saturations the equilibrium temperature increases with grain size; hence, small particles melt away as large particles grow. Melting also occurs at the intergrain bonds, causing a low strength and rapid densification. At low saturations the equilibrium temperature is determined by the capillary pressure and the particle sizes have only a second order effect. Therefore, grain growth proceeds slowly and, even at large overburden pressures, no intergrain melting occurs. At low saturations the water "tension" acts through a finite area, thus large attractive forces exist between the grains, and the strength of the snow matrix is large.
Appears in Collections:CRREL Research Report

Files in This Item:
File Description SizeFormat 
CRREL-Research-Report-313.pdf615.83 kBAdobe PDFThumbnail