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

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 proper...

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Bibliographic Details
Main Author: Kovacs, Austin
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 1996
Subjects:
Snow
Ice and Permafrost
Physical and Dynamic Oceanography
*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
ICE FLOES
ICE STRUCTURE INTERACTIONS
Beaufort Sea
Ice
Ice Sheet
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA317247
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA317247
Description
Summary: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.

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