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

• 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; *MECHANICAL PROPERTIES; GRAIN SIZE; BEAUFORT SEA; SAMPLING; TEXTURE; FIELD TESTS; TEST AND EVALUATION; CRYSTALS; Beaufort Sea; Ice; permafrost; Sea ice
• Online Access: http://www.dtic.mil/docs/citations/ADA213043; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA213043

This report describe 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: Ice; Ice properties; Ice structure; Mechanical properties; Sea ice.