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

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TypeTechnical Report
Series titleTechnical Report
Subjecttemperature; iceberg; ice
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
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedNo
NRC number6318
NPARC number8895008
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Record identifier241a5082-2096-46c0-8c5a-e7697abe8f16
Record created2009-04-22
Record modified2016-10-03
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