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EncyclopediaArctic, theArctic, the northernmost area of the earth, centered on the North Pole. The arctic regions are not coextensive with the area enclosed by the Arctic Circle (lat. 66°30'N) but are usually defined by the irregular and shifting 50°F (10°C) July isotherm that closely corresponds to the northern limit of tree growth and that varies both N and S of the Arctic Circle. The regions therefore include the Arctic Ocean; the northern reaches of Canada, Alaska, Russia, Norway, and the Atlantic Ocean; Svalbard; most of Iceland; Greenland; and the Bering Sea. Sections in this article: The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved. More on the Arctic from Infoplease:
- arctic: meaning and definitions - arctic: Definition and Pronunciation
- Arctic Circle - Arctic Circle Arctic Circle, imaginary circle on the surface of the earth at 66 1/2°N latitude, ...
- Arctic Archipelago - Arctic Archipelago Arctic Archipelago , group of more than 50 large islands, Northwest Territories ...
- The Arctic - The Arctic Region, primarily made up of the frozen Arctic Ocean, that surrounds the North Pole. ...
- Arctic Red River - Arctic Red River Arctic Red River, c.310 mi (500 km) long, rising in the Mackenzie Mts. of W ...
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