Mechanical Properties of Multi-Year Sea Ice. Phase 2. Ice Structure Analysis

This report describes the structural analysis of multi-year sea ice samples that were tested in the second phase of a program designed to obtain a comprehensive understanding of the mechanical properties of multi-year sea ice from the Alaskan Beaufort Sea. Each test specimen is classified into one o...

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Bibliographic Details
Main Authors: Richter-Menge, Jacqueline, Perron, Nancy M
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 1988
Subjects:
Snow
Ice and Permafrost
*SEA ICE
CRYSTALS
FIELD TESTS
GRAIN SIZE
ICE
MECHANICAL PROPERTIES
ORIENTATION(DIRECTION)
SAMPLING
STRUCTURAL ANALYSIS
TEST AND EVALUATION
TEXTURE
BEAUFORT SEA
GRANULES
RIDGES
Multiyear sea ice
Columnar ice
Granular ice
Beaufort Sea
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA194980
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA194980
Description
Summary:This report describes the structural analysis of multi-year sea ice samples that were tested in the second phase of a program designed to obtain a comprehensive understanding of the mechanical properties of multi-year sea ice from the Alaskan Beaufort Sea. Each test specimen is classified into one of three major ice texture categories: granular, columnar, or a mixture of columnar and granular ice. The crystallographic orientation, percent columnar ice, and grain size are then evaluated for the granular and/or columnar ice in the sample. Test results are interpreted with respect to these parameters. The overall composition of multi-year ridges is considered, based on the extensive field sampling that was done in the program. The effect of sample orientation on the results is also discussed. Keywords: Sea ice.

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