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):
Report Date:
1969-03-01
Pagination or Media Count:
24.0
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:
Subject Categories:
- Snow, Ice and Permafrost