Accession Number:

ADA254526

Title:

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

Descriptive Note:

Corporate Author:

WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB

Report Date:

1992-04-02

Pagination or Media Count:

59.0

Abstract:

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 icewater 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.

Subject Categories:

  • Snow, Ice and Permafrost
  • Acoustics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE