Much of the world's sea ice is enclosed within the polar ice packs in the Earth's polar regions: the Arctic ice pack of the Arctic Ocean and the Antarctic ice pack of the Southern Ocean.
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21 Facts About Sea ice
2.
Sea ice is classified according to whether or not it is able to drift and according to its age.
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3.
Sea ice can be classified according to whether or not it is attached to the shoreline.
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4.
The overall sea ice cover is termed the ice canopy from the perspective of submarine navigation.
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5.
New ice is a general term used for recently frozen sea water that does not yet make up solid ice.
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6.
When sea ice begins to form on a beach with a light swell, ice eggs up to the size of a football can be created.
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7.
Young Sea ice is not as flexible as nilas, but tends to break under wave action.
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8.
In other words, it is Sea ice that grows in the fall and winter but does not survive the spring and summer months.
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9.
Old ice is commonly divided into two types: second-year ice, which has survived one melting season and multiyear ice, which has survived more than one.
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10.
Level ice is sea ice that has not been affected by deformation and is therefore relatively flat.
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11.
In calm water, the first sea ice to form on the surface is a skim of separate crystals which initially are in the form of tiny discs, floating flat on the surface and of diameter less than 0.
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12.
In rough water, fresh sea ice is formed by the cooling of the ocean as heat is lost into the atmosphere.
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13.
Sea ice applied this theory in the field in the Kara Sea, which led to the discovery of Vize Island.
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14.
Changes in sea ice conditions are best demonstrated by the rate of melting over time.
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15.
Satellite study of sea ice began in 1979 and became a much more reliable measure of long-term changes in sea ice.
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16.
Sea ice provides an ecosystem for various polar species, particularly the polar bear, whose environment is being threatened as global warming causes the ice to melt more as the Earth's temperature gets warmer.
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17.
At this, sea ice's relationship with global warming is cyclical; the ice helps to maintain cool climates, but as the global temperature increases, the ice melts and is less effective in keeping those climates cold.
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18.
The bright, shiny surface of the Sea ice serves a role in maintaining cooler polar temperatures by reflecting much of the sunlight that hits it back into space.
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19.
Many global climate models have sea ice implemented in their numerical simulation scheme in order to capture the ice–albedo feedback correctly.
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20.
When sea water freezes, the ice is riddled with brine-filled channels which sustain sympagic organisms such as bacteria, algae, copepods and annelids, which in turn provide food for animals such as krill and specialised fish like the bald notothen, fed upon in turn by larger animals such as emperor penguins and minke whales.
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21.
Decline of seasonal sea ice puts the survival of Arctic species such as ringed seals and polar bears at risk.
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