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Arctic

From Philip's Encyclopedia
Vast region of icy seas and cold lands around the North Pole , often defined as extending from the Pole to the Arctic Circle. In areas N of latitude 66° 30'N, the sun does not set during the height of summer, nor rise during the depths of winter. Many place the S limit of the Arctic proper at the northern boundary of forest growth, others make the limit the summer isotherm of 18°C (50°F). The more southerly areas are frequently referred to as the subarctic. At the centre of the Arctic is the Arctic Ocean . In the region around the North Pole, the waters of the Arctic are permanently covered with sheet ice or a floating mass of ice debris called the ice pack, but some parts of the ocean are frozen only in winter. When the ice starts to melt in spring, it breaks into floes and drifting pack ice. Icebergs have their origins in freshwater glaciers flowing into the ocean from the surrounding lands. Lands and climate Bordering the Arctic Ocean are the most northerly lands of Asia, Europe, …
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Full text Article arctic

From Word Origins
Etymologically, the Arctic is the region of the ‘bear’. Nothing to do with polar bears, though. The characteristic constellations of the northern hemisphere are the ‘Little Bear’ (Latin Ursa Minor ), which contains the northern celestial pole, and the Plough, otherwise known as the ‘Great Bear’ …
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Full text Article Arctic

From Encyclopedia of American Foreign Policy
The Arctic is a region lying north of the Arctic Circle (66° 33’N) that exists above the northernmost tree line and has an average temperature in the warmest month that is below 50°F. It is a region undergoing significant climatic changes. In September 2012 the Arctic Ocean's ice sheet shrunk to…
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Full text Article Arctic, the

From The Columbia Encyclopedia
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 degrees Fahrenheit (10 degrees Celsius) July isotherm that closely corresponds to…
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Full text Article Arctic

From Encyclopedia of Seas: The Western Arctic Seas Encyclopedia
Arctic...
Arctic – the northernmost region of the Earth within the Arctic circle at latitude 66°30′N, centred on the North Pole. It consists of offshores, which during summer are covered with drifting ice that creates marginal conditions preventing navigation. The other part is either permafrost under icy…
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Full text Article Arctic

From Science Encyclopedia: Encyclopedia of Marine Science
The northern polar region of the Earth that includes the Arctic Ocean and adjacent areas of the Eurasian and North American continents is called the Arctic. Some people consider it to be the area inside the Arctic Circle, which generally refers to 66° 32° N (often taken as 66.5’N) latitude. Along…
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Full text Article Arctic

From Encyclopedia of Social and Cultural Anthropology
The term ‘Arctic’, before it was applied to a geographical region and its inhabitants, first had an astronomical meaning for the ancient Greeks. It signified the apparent trajectory of the Great Bear (‘bear’ is arctos in Greek) around the celestial North Pole. This celestial landmark was then…
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Full text Article Arctic

From The Encyclopedia of Tourism and Recreation in Marine Environments
The Arctic Ocean (from C. Chapman, Dept...
The Arctic is an ocean basin surrounded by land. The lands that encircle the Arctic waters are comprised of continental masses (North America and Eurasia) and islands (Greenland and Iceland). These lands are broken only in two areas, where the cold Arctic waters mix with the warmer waters of the…
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Full text Article Arctic, the

From The Hutchinson Unabridged Encyclopedia with Atlas and Weather Guide
That part of the northern hemisphere surrounding the North Pole; generally defined as the region lying either north of the Arctic Circle (66° 30' north) or north of the treeline; area 36 million sq km/14 million sq mi; population around 1 million. There is no Arctic continent – the greater part of…
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Full text Article Arctic

From Philip's Encyclopedia
Vast region of icy seas and cold lands around the North Pole , often defined as extending from the Pole to the Arctic Circle. In areas N of latitude 66° 30'N, the sun does not set during the height of summer, nor rise during the depths of winter. Many place the S limit of the Arctic proper at the…
| 424 words
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Traditional Inuit clothing is often lined with...
The most northerly constellation of stars, Arktos, or the Great Bear, gives its name to the icy ocean beneath it that surrounds the North Pole. One of the coldest places on Earth, the Arctic Ocean is bordered by the northernmost parts of Europe, Asia, and North America, including Greenland, the…
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