Author(s): M. V. Strakhov; V. I. Fedotov; N. V. Cherepanov

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Abstract: Ice texture and ice strength in natural pressure ridges are highly variable as a result of regelation of ice pieces, snow and shuga. These processes were studied in laboratory experiments under a variety of initial conditions and employing different methods both for sea and freshwater ice. The results obtained show that the strength of ice formed during the compaction and regelation of snowshuga mixtures in freshwater is up to two times higher than that formed in saltwater. Injection of su­percooled water into the mixture noticeably increases ice strength. A further set of experiments demon­strated the effect of the initial composition of ice samples and their crystal structure on the final ice texture during the regelation in flowing water. It was also found that the characteristic textural fea­tures develop during freezing of cavities in the ice cover.

DOI:

Year: 1998