Accession Number : AD0687278

Title :   PERMEABILITY AND STRENGTH OF AGING SNOW (TEST RESULTS).

Descriptive Note : Special rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : Waterhouse,Robert W. ; Bunten,Lawrence

Report Date : MAR 1969

Pagination or Media Count : 24

Abstract : Old snow or ice disaggregated at -10 degrees C or below produces a noncohesive aggregation of granular particles resembling sand. In contrast to rock particles, the surface properties of ice granules are not passive. Such aggregations are metamorphic, exhibiting a broad range of property changes in a relatively short time. Two mechanical properties, compressive strength and air permeability, characterize this behavior. Results of tests with disaggregated snow reported here show this time dependency of these properties -- their density and temperature dependency is also indicated. The initial noncohesive aggregations are characterized by density, mean particle size and the standard geometric deviation of the size distribution. (Author)

Descriptors :   (*SNOW, COMPRESSIVE PROPERTIES), AGING(MATERIALS), SURFACE PROPERTIES, PARTICLE SIZE, DENSITY, PERMEABILITY, TEMPERATURE, CLASSIFICATION, GREENLAND

Subject Categories : Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE