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Comparison of the strength of iceberg and other freshwater ice and the effect of temperature

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.4224/12340937
AuthorSearch for: 1
Affiliation
  1. National Research Council of Canada. NRC Institute for Ocean Technology
FormatText, Technical Report
Physical description15 p.
Subjecttemperature; iceberg; ice
Abstract
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.
Publication date
PublisherNational Research Council of Canada. Institute for Ocean Technology
PlaceSt. John's, Newfoundland
Series
  • Technical Report (National Research Council of Canada. Institute for Ocean Technology), no. NRC-IOT-6318 (February 2006).
  • PERD/CHC report, no. 20-83.
LanguageEnglish
Peer reviewedNo
IdentifierTR-2006-07
NPARC number12340937
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Record identifierdb2dacd4-05da-46ac-9c84-991baaacfc3d
Record created2009-09-11
Record modified2022-09-27
Date modified: