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Coordinates: 30°40′N 0°00′E / 30.667°N 0.000°E / 30.667; 0.000
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{{Infobox settlement
[[Image:GrandErgOccidental STS059-238-88.jpg|thumb|Grand Erg Occidental (centre), as seen from space.]]
| name = ''Grand Erg Occidental''
The '''Grand Erg Occidental''' (also known as the Western Sand Sea) is the second largest [[erg (landform)|erg]] in northern [[Algeria]], behind the [[Grand Erg Oriental]]. This true [[desert]] region receives less than 25 cm (10 in) of [[rainfall]] per year.<ref>{{cite web | url=http://earth.jsc.nasa.gov/sseop/EFS/photoinfo.pl?PHOTO=STS059-238-88 | title=STS059-238-088 Grand Erg Occidental, North Central Algeria April 1994 | work=Earth from Space | publisher=[[NASA]] | accessdate=2007-01-18}}</ref> It contains no human villages and there are no roads through it.<ref>{{cite web | url=
| native_name = <big>العرق الغربي الكبير</big>
http://lexicorient.com/algeria/g_erg_oc.htm | title=GRAND ERG OCCIDENTAL: The endless dunes | work=Adventures in Algeria | publisher=LexicOrient | accessdate=2007-01-18}}</ref>
| native_name_lang = <!-- ISO 639-2 code e.g. "fr" for French. If more than one, use {{lang}} instead -->
| settlement_type = [[Erg (landform)|Erg]]
| image_skyline =Grand erg occidental.jpg
| image_alt =
| image_caption = The desolate landscape of the ''Grand Erg Occidental'' near [[Timimoun]]
| image_flag =
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| image_map =Les monts Atlas.png
| map_alt =
| map_caption =Map of the Maghreb showing the ''Grand Erg Occidental''.
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| subdivision_type = Country
| subdivision_name = [[Algeria]]
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<!-- ALL fields with measurements have automatic unit conversion -->
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| elevation_m = 500
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The '''Grand Erg Occidental''' ({{langx|ar|العرق الغربي الكبير}}, al-ʿIrq al-Gharbī al-Kabīr), (also known as the Western Sand Sea) is the second largest [[erg (landform)|erg]] in northern [[Algeria]] after the [[Grand Erg Oriental]]. It covers an area of approximately {{Convert|78,000|km2|mi2}}.<ref name="readersnatural">{{Cite book|title=Natural Wonders of the World|publisher=Reader's Digest Association, Inc|year=1980|isbn=0-89577-087-3|editor-last=Scheffel|editor-first=Richard L.|location=United States of America|pages=168–169|editor-last2=Wernet|editor-first2=Susan J.}}</ref> The sand [[dune]]s in the erg are formed by the wind, and can be up to {{Convert|120|m|ft}} high.<ref name="readersnatural" /> Certain crescent-shaped dunes, known as [[barchan]]s, are actually mobile; the wind can push these dunes as much as 20 to 30 m (65–100&nbsp;ft) in one year.<ref name="readersnatural" />

==Geography==
It is a [[desert]] [[natural region]] that receives less than 50&nbsp;mm (1,96&nbsp;in) of rainfall per year.<ref>{{Cite web|url=http://earth.jsc.nasa.gov/sseop/EFS/photoinfo.pl?PHOTO=STS059-238-88 |title=STS059-238-088 Grand Erg Occidental, North Central Algeria April 1994 |work=Earth from Space |publisher=[[NASA]] |access-date=2007-01-18 |url-status=dead |archive-url=https://web.archive.org/web/20061008214118/http://earth.jsc.nasa.gov/sseop/EFS/photoinfo.pl?PHOTO=STS059-238-88 |archive-date=2006-10-08 }}</ref> 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.<ref>{{Cite web | url=http://lexicorient.com/algeria/g_erg_oc.htm | title=GRAND ERG OCCIDENTAL: The endless dunes | work=Adventures in Algeria | publisher=LexicOrient | access-date=2007-01-18 | archive-date=2012-11-19 | archive-url=https://web.archive.org/web/20121119020420/http://lexicorient.com/algeria/g_erg_oc.htm | url-status=dead }}</ref>

==Features==
<gallery>
Image:GrandErgOccidental STS059-238-88.jpg|Grand Erg Occidental (centre), as seen from space
File:Ksar aghlad timimoune.jpg|Ksar of Aghlad; a Ksar -which means castle- was a structure where a tribe used to live
</gallery>

==See also==
*[[Grand Erg Oriental]]
*[[Geography of Algeria]]
*[[List of ergs]]


==References==
==References==
{{Commons category}}
<div class="references-small"><references/></div>
{{Reflist}}


{{Authority control}}
{{coord missing|Algeria}}
{{Coord|30|40|N|0|00|E|type:landmark_source:kolossus-frwiki|display=title}}


[[Category:Landforms of Algeria]]
[[Category:Landforms of Algeria]]
[[Category:Ergs]]
[[Category:Ergs of Africa]]
[[Category:Deserts of Algeria]]
[[Category:Natural regions of Africa]]
[[Category:Geography of Adrar Province]]


{{Algeria-geo-stub}}


{{Béchar-geo-stub}}
[[ar:العرق الغربي الكبير]]
[[bg:Голям западен ерг]]
[[de:Westlicher großer Erg]]
[[fr:Grand Erg Occidental]]
[[lt:Didysis Vakarų Ergas]]
[[pl:Wielki Erg Zachodni]]

Latest revision as of 21:26, 30 October 2024

Grand Erg Occidental
العرق الغربي الكبير
The desolate landscape of the Grand Erg Occidental near Timimoun
The desolate landscape of the Grand Erg Occidental near Timimoun
Map of the Maghreb showing the Grand Erg Occidental.
Map of the Maghreb showing the Grand Erg Occidental.
CountryAlgeria
Elevation
500 m (1,600 ft)

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]

Geography

[edit]

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.[3]

Features

[edit]

See also

[edit]

References

[edit]
  1. ^ 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.
  2. ^ "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.
  3. ^ "GRAND ERG OCCIDENTAL: The endless dunes". Adventures in Algeria. LexicOrient. Archived from the original on 2012-11-19. Retrieved 2007-01-18.

30°40′N 0°00′E / 30.667°N 0.000°E / 30.667; 0.000