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Indeed this is a natural process. The salt crystals are of a different shape and density to those of water ice, and thus the salt will not be incorporated in sea water freezing. In the Antarctic, this salt is redeposited into the sea water, thus making it hyper-saline as well as dense.

AND the sea water into which it becomes dissolved, becomes much colder than the remainder of the seawater, because the salt dispelled from the surface ice will be much colder than the bulk seawater.

This then forms a hyper-saline current that is an important driver of oceanic mixing, and climate control.

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11y ago

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