Ice Regime and Ice Transport in Nares Strait
ABSTRACT. In order to assess the part played by ice export through the Canadian Arctic Archipelago in the heat budget of the Arctic Ocean, one of the factors that must be known is the length of time per year that the channels are sealed by fast ice. To establish this for Nares Strait a series of fli...
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| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1036.9932 http://pubs.aina.ucalgary.ca/arctic/Arctic26-4-282.pdf |
| Summary: | ABSTRACT. In order to assess the part played by ice export through the Canadian Arctic Archipelago in the heat budget of the Arctic Ocean, one of the factors that must be known is the length of time per year that the channels are sealed by fast ice. To establish this for Nares Strait a series of flights was undertaken through the winters of 1970-71 and 1971-72. The resulting observations, combined with a search of historical records, suggest that the date of consolidation of ice in this channel tends to be late. A tentative calculation of annual export leads to the conclusion that the contribution of the Canadian channels may be greater than has been supposed. RfiSUMe. Rdgime et transport des glaces dans le ddtroit de Nares. Pour Bvaluer la part que joue l'exportation des glaces 51 travers les chenaux arctiques dans le bilan thermique de l'océan Arctique, l'un des facteurs qu'il faut connaître est la longueur de la pBriode annuelle pendant laquelle les chenaux sont bloquBs par la glace fixBe. Pour le constater dans le d6troit de Nares, nous avons entrepris une sBrie d'envolks pendant les hivers de 1970-1971 et 1971-1972. Nos observations, jointes à une recherche de données historiques, nous suggèrent que la date de consolidation de la glace dans ce chenal tend B être tardive. Un essai de calcul de l'exportation annuelle nous amène 51 conclure que la contribution des chenaux canadiens pourrait être plus grande qu'on ne l'avait supposé. |
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