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Pancake-ice, Greenland/Arctic

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Pancake-ice, Greenland/Arctic

Hoar frost roses drift on the water surface. Sea water frozes not at 0 degrees Celsius like fresh water but - because of the salt - at minus 1.8 degrees Celsius. First thick slurry of ice crystals grow. Wind and waves move this slurry - and so pancake ice is built. (aerial view)