Types of Sea Ice
Land-fast ice, or simply fast ice, is sea ice that has frozen along coasts ("fastened" to them) or to the sea floor over shallow parts of the continental shelf, and extends out from land into sea. Unlike drift ice, it does not move with currents and wind.
Drift ice consists of ice that floats on the surface of the water, as distinguished from the fast ice, attached to coasts. When packed together in large masses, drift ice is called pack ice. Pack ice may be either freely floating or blocked by fast ice while drifting past.
Pancake ice is sea ice broken into small round chunks looking like pancakes.
The most important areas of pack ice are the polar ice packs formed from seawater in the Earth's polar regions: the Arctic ice pack of the Arctic Ocean and the Antarctic ice pack of the Southern Ocean. Polar packs significantly change their size during seasonal changes of the year. Because of vast amounts of water added to or removed from the oceans and atmosphere, the polar ice packs experience a significant impact from global changes in climate; see "Polar ice packs" for details.
An ice floe is a floating chunk of ice that is less than 10 kilometers (six miles) in its greatest dimension. Wider chunks of ice are called ice fields.
Read more about this topic: Sea Ice
Famous quotes containing the words types, sea and/or ice:
“Our major universities are now stuck with an army of pedestrian, toadying careerists, Fifties types who wave around Sixties banners to conceal their record of ruthless, beaverlike tunneling to the top.”
—Camille Paglia (b. 1947)
“SWEENEY:
Nothing to eat but the fruit as it grows.
Nothing to see but the palmtrees one way
And the sea the other way,
Nothing to hear but the sound of the surf.
Nothing at all but three things
DORIS: What things?
SWEENEY: Birth, and copulation, and death.”
—T.S. (Thomas Stearns)
“She has been man’s slave. He has been educated at her expense. If he bought the ice cream, she was expected to pay for all his luxuries in reduced wages. She has done the drudgery and borne the insults of those who wronged her, assuming to be her protector.”
—Caroline Nichols Churchill (1833–?)