Comparison of the strength of iceberg and other freshwater ice and the effect of temperature
Based on literature results, the temperature of an iceberg around the Grand Banks of Newfoundland is shown to vary from -2°C at the surface to approximately -20°C at depth. This temperature variation affects the strength of the ice. The strength of iceberg ice is shown to be 1.7 times less than othe...
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| Format: | Report |
| Language: | English |
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National Research Council of Canada. Institute for Ocean Technology
2006
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| Online Access: | https://dx.doi.org/10.4224/12340937 https://nrc-publications.canada.ca/eng/view/object/?id=db2dacd4-05da-46ac-9c84-991baaacfc3d |
| Summary: | Based on literature results, the temperature of an iceberg around the Grand Banks of Newfoundland is shown to vary from -2°C at the surface to approximately -20°C at depth. This temperature variation affects the strength of the ice. The strength of iceberg ice is shown to be 1.7 times less than other freshwater ice at a strain-rate of 10-³s-¹, probably due to pre-existing cracks. Using an activation energy of 80kJ/mol., the uniaxial compressive strength of iceberg ice is shown to vary from 5 MPa at -2°C near the surface, to 8 MPa at -20°C, at 10-20m depth. : Technical Report (National Research Council of Canada. Institute for Ocean Technology), NRC-IOT-6318 : PERD/CHC report, 20-83 |
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