Arctic Physical Geography

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Beaufort scale

World Encyclopedia | 2005 | Copyright

Beaufort scale Named after the 19th-century British naval officer who devised it, the Beaufort Scale assesses wind speed according to its effects. Originally designed in 1806 as an aid for sailors, it has since been adapted for use on land and was internationally recognised in 1874.

Scale	Wind speed	Name
	km/h	mph
0	0–1	0–1	Calm
1	1–5	1–3	Light air
2	6–11	4–7	Light breeze
3	12–19	8–12	Gentle breeze
4	20–28	13–18	Moderate
5	29–38	19–24	Fresh
6	39–49	25–31	Strong
7	50–61	32–38	Near gale
8	62–74	39–46	Gale
9	75–88	47–54	Strong gale
10	89–102	55–63	Storm
11	103–117	64–72	Violent storm
12–17	118+	73+	Hurricane

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Beaufort scale

A Dictionary of Ecology | 2004 | | Copyright

Beaufort scale A scale of values, from 0 to 12, for describing wind strength, as defined by Admiral Sir Francis Beaufort (1774–1857) in 1806 (the scale was accepted by the British Admiralty in 1838 and adopted by the International Meteorological Committee in 1874). Each wind force is recognized by its common effects on objects in the landscape (dust, flags, trees, etc.) and on people in the open, or on the state of the sea surface.

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MICHAEL ALLABY. "Beaufort scale." A Dictionary of Ecology. 2004. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Beaufort scale." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O14-Beaufortscale.html

MICHAEL ALLABY. "Beaufort scale." A Dictionary of Ecology. 2004. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-Beaufortscale.html

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Beaufort scale

A Dictionary of Earth Sciences | 1999 | | Copyright

Beaufort scale Scale of values, from 0 to 12, for describing wind strength, as defined by Admiral Beaufort in the nineteenth century. Each wind force is recognized by its common effects on objects in the landscape (dust, flags, trees, etc.) and on people in the open, or on the state of the sea surface. See also SAFFIR/SIMPSON SCALE; and FUJITA TORNADO INTENSITY SCALE.

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AILSA ALLABY and MICHAEL ALLABY. "Beaufort scale." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Beaufort scale." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O13-Beaufortscale.html

AILSA ALLABY and MICHAEL ALLABY. "Beaufort scale." A Dictionary of Earth Sciences. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Beaufortscale.html

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Beaufort Sea

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

Beaufort Sea , part of the Arctic Ocean, N of Alaska and Canada, between Point Barrow, Alaska, and the Canadian Arctic Archipelago. The Mackenzie River flows into the sea, which is always covered with pack ice. It was first explored by the Canadian Vilhjalmur Stefansson in 1914.

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