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

Autor:	Stephen J. Jones
Rok vydání:	2007
Předmět:	Freshwater ice ice strength Compressive strength Oceanography iceberg temperature General Earth and Planetary Sciences freshwater ice Geotechnical Engineering and Engineering Geology Observation data Geomorphology Geology Iceberg
Zdroj:	Cold Regions Science and Technology. 47:256-262
ISSN:	0165-232X
DOI:	10.1016/j.coldregions.2006.10.002
Popis:	Based on literature results, the temperature of an iceberg around the Grand Banks 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. A review 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 − 3 s − 1 , probably due to pre-existing healed cracks or flaws. Using an activation energy of 80 kJ/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, 10–20 m inside the iceberg.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b4da3ee3e65d217df725e4bf59ff186 https://doi.org/10.1016/j.coldregions.2006.10.002 Zobrazit plný text záznamu Full Text from ScienceDirect