Accession Number : ADA317247

Title :   Sea Ice: Part II. Estimating the Full-Scale Tensile, Flexural, and Compressive Strength of First-Year Ice,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Kovacs, Austin

PDF Url : ADA317247

Report Date : SEP 1996

Pagination or Media Count : 24

Abstract : Sea-ice salinity, density, and temperature data were used to develop new methods for determining the bulk brine volume and porosity of sea-ice floes. Methods for estimating full-thickness ice sheet strength, based on large-scale field tests, are presented. The relationships among bulk sea-ice properties, strain rate, and strength are illustrated. A new constitutive equation was developed for predicting the full-thickness horizontal compressive strength of first-year sea ice as a function of the applied strain rate and bulk porosity. An estimate of the horizontal force that may develop between first-year sea ice and a 90-m-wide structure is given. Estimating sea-ice strength based on remote ice conductivity measurements is also discussed conceptually.

Descriptors :   *SALINITY, *SEA ICE, *BRINES, TEMPERATURE, TENSILE STRENGTH, CONDUCTIVITY, MODULUS OF ELASTICITY, ICE MECHANICS, ELECTRICAL CONDUCTIVITY, POROSITY, STRAIN RATE, FLEXURAL STRENGTH, FLOW CHARTING, COMPRESSIVE STRENGTH, BEAUFORT SEA, DENSIMETERS, PH METERS, SALINOMETERS.

Subject Categories : Snow, Ice and Permafrost
      Physical and Dynamic Oceanography

Distribution Statement : APPROVED FOR PUBLIC RELEASE