Accession Number:

AD0694376

Title:

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

Descriptive Note:

Technical rept.,

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s):

• Smith,North

Report Date:

1969-06-01

Pagination or Media Count:

25.0

Abstract:

The complex dynamic Youngs and shear moduli, loss factor and Poissons ratio are presented for naturally compacted glacial snow through a density range of 0.4 to 0.9 gcu cm. A frequency dependence of the moduli and its effect on the computation of Poissons 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

Descriptors:

• (*SNOW
• MECHANICAL PROPERTIES)
• (*ICE
• MECHANICAL PROPERTIES)
• MODULUS OF ELASTICITY
• POISSONS RATIO
• SHEAR STRESSES
• TRANSDUCERS
• SEISMIC WAVES
• VELOCITY
• COMPRESSIVE PROPERTIES
• VIBRATION
• GREENLAND

Subject Categories:

• Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE