Author(s): K. V. Hoyland; G. Kjestveit; J. Heinonen; M. Maattanen
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Keywords: No Keywords
Abstract: Measurements of spatial and temporal temperalure development, geometry, porosity, salinity, density, crystal structure and uniaxial compression strength of a first-year ice ridge field have been performed. Thickness, salinity and density of the level ice were also measured. The test site was a large ridged area with 3·6 layers of rafted ice, the keel depth ranged from 4 to 9 m and the average porosity of the unconsolidated rubble was 38 %. The strength of the ice had a clear dependency of the depth below the water line from which it was taken: below and above 0.85 m. The strength of the consolidated layer was 5-7 MPa. The temperature measurements showed that the consolidated layer ended up being between 0.71 and 0.92 m, the drillings predicted a thicker layer, 1.05-1.11 m.
Year: 2000