DENSITY, TEMPERATURE AND THE UNCONFINED COMPRESSIVE STRENGTH OF POLAR SNOW

The relationships between several empirical and theoretical methods of determining the unconfined compressive strength of polar snow from depth- density and temperature profiles are discussed and graphically compared. Two unconfined compressive strength equations are proposed for snow at -10 degrees...

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Bibliographic Details
Main Author: Kovacs, Austin
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 1967
Subjects:
Snow
Ice and Permafrost
*SNOW
*ICE
POLAR REGIONS
DENSITY
TEMPERATURE
LOADS(FORCES)
DEFORMATION
POROSITY
MATHEMATICAL ANALYSIS
GRAPHICS
COMPRESSIVE PROPERTIES
GREENLAND
Greenland
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0660309
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0660309
Description
Summary:The relationships between several empirical and theoretical methods of determining the unconfined compressive strength of polar snow from depth- density and temperature profiles are discussed and graphically compared. Two unconfined compressive strength equations are proposed for snow at -10 degrees C. The formulas take into consideration the decided changes in slope of the Young's and shear modulus curves at a density of 0.5 g/cm3 for Greenland snow. The slope changes signify that at this density a structural and, therefore, a strength change occur. Analysis of existing test data confirms this reasoning.

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