Sea Ice Elastic Moduli: Determination of Biot Parameters Using In-Field Velocity Measurements.

Abstract

The elastic moduli of sea ice are determined from high frequency velocity measurements made on small samples extracted from the ice canopy. The experimental apparatus for determining the velocities is described and was designed to allow quick in-field measurement. The experimental procedure included measurement of the ice sample salinity and temperature and the results given here allow prediction of elastic moduli from knowledge of these more easily obtainable physical parameters. The elastic moduli determined are those appropriate for a specialized Biot model in which the ice is viewed as a closed pore isotropic material. With the Biot model put forth here, seven parameters are needed to predict acoustic velocities, all of which are easily interpreted physically and are given here in terms of their salinity and temperature dependences. PACS numbers: 43.20.Bi,43.20.Hg,43.30.Ma,43.35.Cg.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1991
Accession Number
ADA239803

Entities

People

  • Kevin L. Williams
  • R. E. Francois

Organizations

  • University of Washington

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acoustic Properties
  • Acoustic Velocity
  • Bulk Modulus
  • Equations
  • Fluids
  • Frequency
  • Fresh Water
  • Ice
  • Liquids
  • Materials
  • Measurement
  • Physics Laboratories
  • Plastic Explosives
  • Pulsed Plasma Thrusters
  • Sea Ice
  • Surface Temperature
  • Water

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Systems Analysis and Design
  • Thermal Physics or Thermal Science.