|The high salt concentration permits the contents of brine channels to remain in a liquid state even at lower temperatures, and they serve as a habitat for microorganisms [Credit: Gerhard Dieckmann/Alfred Wegener Institute]|
Under normal conditions, water freezes at zero degrees Celsius. But not salt water: Due to the presence of salts, the freezing point of sea water is below zero. And sea water tends to freeze unequally. During freezing, channels in which the salt accumulates, so-called "brine channels," are formed in the ice.
The Archaeology News Network