The Grand Erg Occidental (Arabic: العرق الغربي الكبير, al-ʿIrq al-Gharbī al-Kabīr), (also known as the Western Sand Sea) is the second largest erg in northern Algeria after the Grand Erg Oriental. It covers an area of approximately 78,000 square kilometres (30,000 sq mi).[1] The sand dunes in the erg are formed by the wind, and can be up to 120 metres (390 ft) high.[1] Certain crescent-shaped dunes, known as barchans, are actually mobile; the wind can push these dunes as much as 20 to 30 m (65–100 ft) in one year.[1]
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grand erg occidental サハラ砂漠
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Lever de Soleil sur les dunes du Grand Erg Occidental, Ksar Guentour (Gourara)
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Dunas en TUNEZ - Gran ERG Occidental.
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Geography
It is a desert natural region that receives less than 50 mm (1,96 in) of rainfall per year.[2] The mean elevation of the Grand Erg Occidental is about 500 m, on average higher than the elevation of the Grand Erg Oriental, but not as high as the neighboring Tademaït to the southwest. This desolate region is a practically uninhabited area; there are no permanent villages and there are no roads crossing it.[3]
Features
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Grand Erg Occidental (centre), as seen from space -
Ksar of Aghlad; a Ksar -which means castle- was a structure where a tribe used to live
See also
References
- ^ a b c Scheffel, Richard L.; Wernet, Susan J., eds. (1980). Natural Wonders of the World. United States of America: Reader's Digest Association, Inc. pp. 168–169. ISBN 0-89577-087-3.
- ^ "STS059-238-088 Grand Erg Occidental, North Central Algeria April 1994". Earth from Space. NASA. Archived from the original on 2006-10-08. Retrieved 2007-01-18.
- ^ "GRAND ERG OCCIDENTAL: The endless dunes". Adventures in Algeria. LexicOrient. Retrieved 2007-01-18.
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30°40′N 0°00′E / 30.667°N 0.000°E
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This page was last edited on 22 May 2021, at 13:48