Ice decay boundaries for the ice regime system : Recommendations from a scientific analysis

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TypeTechnical Report
Series titleTechnical Report
AbstractThe Canadian Ice Regime System takes into account the decay of sea ice by allowing the addition of +1 to the Ice Multiplier for ice that is deemed to be decayed. The AIRSS definition of decay relates to the surface properties of the ice such that decayed ice is defined as ice that has thaw holes or is at the "rotten" stage. This report examines this approach based on an analysis of the strength of first-year sea ice, second-year sea ice, multi-year sea ice, and the damage statistics for Arctic vessels. The analysis shows that there is no quantitative scientific basis for the current AIRSS approach of taking into account the decay of sea ice in the Ice Regime System. The analysis further shows that the decay of sea ice can be quantified in a meaningful manner. The report provides a detailed discussion of the analysis with recommendations for modifying AIRSS to account for the decay of sea ice.
Publication date
AffiliationNational Research Council Canada; NRC Canadian Hydraulics Centre
Peer reviewedNo
NRC numberCHC-TR-009
NPARC number12340935
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Record identifierde112647-e2f7-4f3a-a5f5-43e43638f192
Record created2009-09-11
Record modified2016-10-03
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