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A review of the strength of iceberg and other freshwater ice and the effect of temperature

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1016/j.coldregions.2006.10.002
AuteurRechercher :
FormatTexte, Article
Sujetice strength; iceberg; freshwater ice; temperature
Résumé
Based on literature results, the temperature of an iceberg around the GrandBanks of Newfoundland is shown to vary from about 0°C at the water-ice interface to approximately -20°C in the interior. This temperature variation affects the strength of the ice. Are view of the strength of iceberg ice shows that its uniaxial compressive strength is 1.7 times less than other freshwater ice at a strain-rate of 10-3s-1, probably due to pre-existing healed cracks or flaws. Using an activation energy of 80kJ/mol., the uniaxial compressive strength of iceberg ice is shown to vary from 5 MPa at 0°C near the surface, to 8.5 MPa at-20°C,10-20m inside the iceberg.
Date de publication
Dans
  • Cold Regions Science and Technology 47, nº 3 (2007) : 256–262.
Publications évaluées par des pairsOui
IdentificateurIR-2006-32
Numéro du CNRCNRC-IOT-6382
Numéro NPARC8894982
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Identificateur de l’enregistrementc59ec10d-fd1d-4198-903d-3e084cdc687d
Enregistrement créé2009-04-22
Enregistrement modifié2020-05-10
Date de modification :