Experimental Examination of Growing and Newly Submerged Sea Ice Including Acoustic Probing of the Skeletal Layer

The acoustic properties of sea ice are inherently important to studies of sound propagation and scattering in the Arctic. The richness of the acoustic behavior of sea ice stems from its saline nature. In particular, sea ice is the result of the solidification of a sub-eutectic melt. This accounts fo...

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Bibliographic Details
Main Authors: Williams, K. L., Garrison, G. R., Mourad, P. D.
Other Authors: WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
Format: Text
Language:English
Published: 1992
Subjects:
Snow
Ice and Permafrost
Acoustics
Radiofrequency Wave Propagation
*HIGH FREQUENCY
*ACOUSTIC PROPERTIES
*SEA ICE
FREQUENCY
PROPAGATION
INTERFACES
ENERGY
SOLIDIFICATION
ICE
PERTURBATIONS
BEHAVIOR
EUTECTICS
OCEANS
SOUND
POROSITY
MELTS
LAYERS
MEASUREMENT
SCATTERING
Arctic
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA254526
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA254526
Description
Summary:The acoustic properties of sea ice are inherently important to studies of sound propagation and scattering in the Arctic. The richness of the acoustic behavior of sea ice stems from its saline nature. In particular, sea ice is the result of the solidification of a sub-eutectic melt. This accounts for the high porosity layer at the ice/water interface, known as the skeletal layer. The high porosity makes measurements of the acoustic properties in the skeletal layer extremely sensitive to perturbations. Because this layer is a few centimeters thick, it is of primary importance for modeling the scattering of high frequency (above 10 kHz) acoustic energy from the underside of the ice.

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