Westarctica at 17:52, 13 May 2018

2018-05-13T17:52:30Z

← Older revision		Revision as of 17:52, 13 May 2018
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	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]]. Polar packs undergo a significant yearly cycling in surface extent, a natural process upon which depends the Arctic ecology, including the ocean's ecosystems. Due to the action of winds, currents and temperature fluctuations, sea ice is very dynamic, leading to a wide variety of ice types and features.		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]]. Polar packs undergo a significant yearly cycling in surface extent, a natural process upon which depends the Arctic ecology, including the ocean's ecosystems. Due to the action of winds, currents and temperature fluctuations, sea ice is very dynamic, leading to a wide variety of ice types and features.

	Sea ice may be contrasted with icebergs, which are chunks of [[ice-shelf\|ice shelves]] or [[glacier]]s that calve into the ocean. Depending on location, sea ice expanses may also incorporate [[~~icebergs~~]].		Sea ice may be contrasted with icebergs, which are chunks of [[ice-shelf\|ice shelves]] or [[glacier]]s that calve into the ocean. Depending on location, sea ice expanses may also incorporate [[iceberg]]s.

	[[Category:Science]]		[[Category:Science]]

Westarctica: Created page with "Arctic sea ice '''Sea ice''' arises as seawater freezes. Because ice is less dense than water, it floats on the ocean's surface (as doe..."

2018-05-13T17:52:16Z

Created page with "400px|thumb|Arctic sea ice '''Sea ice''' arises as seawater freezes. Because ice is less dense than water, it floats on the ocean's surface (as doe..."

New page

[[File:Arctic ice.jpg|400px|thumb|Arctic sea ice]]
'''Sea ice''' arises as seawater freezes. Because [[ice]] is less dense than water, it floats on the ocean's surface (as does fresh water ice, which has an even lower density). Sea ice covers about 7% of the Earth’s surface and about 12% of the world’s oceans.

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]]. Polar packs undergo a significant yearly cycling in surface extent, a natural process upon which depends the Arctic ecology, including the ocean's ecosystems. Due to the action of winds, currents and temperature fluctuations, sea ice is very dynamic, leading to a wide variety of ice types and features.

Sea ice may be contrasted with icebergs, which are chunks of [[ice-shelf|ice shelves]] or [[glacier]]s that calve into the ocean. Depending on location, sea ice expanses may also incorporate [[icebergs]].

[[Category:Science]]

Sea ice - Revision history

Westarctica at 17:52, 13 May 2018

Westarctica: Created page with "Arctic sea ice '''Sea ice''' arises as seawater freezes. Because ice is less dense than water, it floats on the ocean's surface (as doe..."