Factors affecting fast‐ice consolidation in Southeastern Hudson Bay, Canada

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Abstract
Analysis of satellite images of southeastern Hudson Bay taken over aperiod of 13 years led to the classification of ice distribution into three categories. The first category is for complete fast‐ice cover of the area, the second for fast ice covering only half the area and the third for the absence of fast ice extending away from the coast. Of the three factors considered‐ wind, water circulation and air temperature—the occurrence of strong southwesterly winds during the freezing period is probably the main factor regulating the extent of the fast‐ice cover for the first two categories. Through melting action, above‐freezing air temperatures appear to prevent the consolidation of ice into a solid cover giving rise to the rare third category of ice distribution.

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