DETERMINING THE DYNAMIC PROPERTIES OF SNOW AND ICE BY FORCED VIBRATION.

The complex dynamic Young's and shear moduli, loss factor and Poisson's ratio are presented for naturally compacted glacial snow through a density range of 0.4 to 0.9 g/cu cm. A frequency dependence of the moduli and its effect on the computation of Poisson's ratio is demonstrated. Co...

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Bibliographic Details
Main Author: Smith,North
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1969
Subjects:
Snow
Ice and Permafrost
(*SNOW
MECHANICAL PROPERTIES)
(*ICE
MODULUS OF ELASTICITY
POISSONS RATIO
SHEAR STRESSES
TRANSDUCERS
SEISMIC WAVES
VELOCITY
COMPRESSIVE PROPERTIES
VIBRATION
GREENLAND
REMOTE AREAS
Greenland
Ice
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0694376
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0694376
Description
Summary:The complex dynamic Young's and shear moduli, loss factor and Poisson's ratio are presented for naturally compacted glacial snow through a density range of 0.4 to 0.9 g/cu cm. A frequency dependence of the moduli and its effect on the computation of Poisson's ratio is demonstrated. Considerable scatter is exhibited in the loss factor measurements; however, indications are that the loss factors have negligible effect on the modulus computations. (Author)

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