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

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TypeTechnical Report
Series titlePERD/CHC report
Physical description15p.
AbstractBased on literature results, the temperature of an iceberg around the Grand Banks of Newfoundland is shown to vary from �2oC at the surface to approximately �20oC 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 �2oC near the surface, to 8 MPa at�20oC, at 10-20m depth.
Publication date
PublisherNational Research Council Canada. Institute for Ocean Technology
PlaceSt. John's NL
AffiliationNational Research Council Canada; NRC Canadian Hydraulics Centre; NRC Institute for Ocean Technology
Peer reviewedNo
NPARC number12340937
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Record identifierdb2dacd4-05da-46ac-9c84-991baaacfc3d
Record created2009-09-11
Record modified2016-10-03
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