As sea water reaches freezing point, the salt in the solution is "rejected", hoewever this results in denser "fresh" water being created. This denser water sinks through the warmer salt water below it, with more salt water therefore being present at the surface of the sea. As a result when the solid ice is formed it is a mixture of fresh water and sea water ... ie a less saline solution, but not all of the salt if "rejected" throught the ice formation process.
|