Accession Number:

ADA317247

Title:

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

Descriptive Note:

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s):

Report Date:

1996-09-01

Pagination or Media Count:

24.0

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.

Subject Categories:

  • Snow, Ice and Permafrost
  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE