Features of frozen and near-frozen seas, including pack ice, polynyas, frazil ice, brine rejection and the sky effects of ice blink and water sky. A topic belongs here when its cited article describes sea ice or a polar ocean process. It excludes open-ocean currents and waves. Sea ice grows and melts with the seasons and helps drive deep ocean circulation by releasing salt as it freezes, and sailors and polar explorers have long described the sky and surface signs that ice leaves.
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Sea Ice and Polar Ocean Phenomena
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Polynya (Wikipedia)
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A polynya () is an area of open water surrounded by sea ice.
Arctic ice pack (Wikipedia)
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The Arctic ice pack is the sea ice cover of the Arctic Ocean and its vicinity.
Frazil ice (Wikipedia)
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Frazil ice is a collection of loose, randomly oriented ice crystals a millimeter and sub-millimeter in size, with various shapes, e.g., elliptical disks, dendrites, needles and of an irregular nature.
Brine rejection (Wikipedia)
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Brine rejection is a process that occurs when salty water freezes.
Iceblink (Wikipedia)
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Iceblink is a white light seen near the horizon, especially on the underside of low clouds, resulting from reflection of light off an ice field immediately beyond.
Water sky (Wikipedia)
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Water sky is a phenomenon that is closely related to ice blink.
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