Results for Qattara Depression
On this page:
 
Dictionary:

Qattara Depression

  (kə-tär'ə) pronunciation

A desert basin of northwest Egypt in the Libyan Desert. Its lowest point is about 134 m (440 ft) below sea level.

 

 
 
Columbia Encyclopedia: Qattara Depression
(kätär'ə) or Munkhafad al-Qattarah (mʊngkhäfäd' äl-kät-tärä') , desert basin, c.7,000 sq mi (18,130 sq km), NW Egypt, NE Africa, in the Libyan Desert. It was long believed to be the lowest point (436 ft/133 m below sea level) in Africa, a record now claimed by Lake Assal, in Djibouti.


 
Wikipedia: Qattara Depression

The Qattara Depression (Arabic: منخفض القطارة 'Munkhafad al-Qattarah') is a desert basin within the Libyan Desert of north-western Egypt. The Depression, at 133 m below sea level, contains the second lowest point in Africa (See also: Lake Asal). The Depression covers about 7,000 square miles (18,000 km²), and at its maximum is 80 km in length and 120 km in width. The bottom of the depression consists of a salt pan.

Environment

Within the Depression there are saline marshes under the northwestern and northern escarpment edges, and extensive playas (dry lake beds) that flood occasionally. The major oasis in the depression, Moghra oasis, is uninhabited and has a 4 km² brackish lake, including a Phragmites swamp. Salt marshes also occur and occupy approximately 300 km², although in some areas, wind blown sands are encroaching. About one-quarter (26 percent) of the 19,500 km² area is occupied by playas, which are composed of hard crust and sticky mud, and which are occasionally filled with water.

Groves of Acacia raddiana represent the only permanent vegetation, growing in shallow sandy depressions. The Acacia groves vary widely in biodiversity and rely on runoff from the rainfall and groundwater to survive.

The Depression is an important habitat for the Cheetah, with the largest number of recent sightings being in areas in the northern, western, and northwestern part of the Qattara Depression, including the highly isolated, wild oases of Ein EI Qattara and Ein EI Ghazzalat, and numerous Acacia groves both inside and outside the depression.

Gazelles (Gazella dorcas and Gazella leptoceros) also inhabit the Qattara Depression, being an important food source for the Cheetah. The largest gazelle population exists in the southwestern part of the Qattara Depression within a vast area of wetlands and soft sand. The area is 900 km², includes the wild oases of Hatiyat Tabaghbagh and Hatiyat Umm Kitabain, and is a mosaic of lakes, salt marshes, scrubland, wild palm groves and Desmostachya bipinnata grassland.

Other common fauna include the Cape Hare (Lepus capensis), Egyptian Jackal (Canis aureus hupstar), Sand Fox (Vulpes rueppelli) and more rarely the Fennec Fox (Vulpes zerda).

Barbary sheep (Ammotragus lervia) were once common throughout but now are few in numbers. Extinct species from the area include the Scimitar Oryx (Oryx dammah), Addax (Addax nasomaculatus) and Bubal Hartebeest (Aclelaphus buselaphus).

There are no human settlements in the Qattara Depression. However the Depression is inhabited by the nomadic Bedouin people and their flocks, with the Moghra oasis being important in times of water scarcity and dry seasons.

World War II

During World War II, this was a notable geographic feature which was considered to be impassable for the majority of military vehicles, notably tanks. Its presence shaped the Battle of El Alamein. The features that made the Depression so impassable includes its salt lakes, extremely high cliffs or escarpments and Fech fech (very fine powdered sand). The cliffs in particular abutted the edge of the El Alamein battlefield, which meant the British Position could not be outflanked.

The 1958 movie Ice-Cold in Alex features the Depression during World War II.

Hydroelectric possibilities

The area is composed of sand dunes and salt lakes in a tear drop shaped formation with the point of the drop facing east and the broad deep area at the south west end. The large size of the Quattra Depression and the fact that it falls to a depth of 132 m below mean sea level has led to several proposals to create a massive hydroelectric project in northern Egypt rivaling the Aswan High Dam. The proposals all call for a large channel or tunnel being excavated from the Qattara due north about 80 km to the Mediterranean Sea. Water would flow from the channel into a series of hydro-electric penstocks which would release the water at 90 m below sea level. Because the Qattara is in a very hot dry region with very little cloud cover the water released at the 90 m level would spread out from the release point across the basin until evaporating from solar influx. Because the depression is so deep and broad, a great deal of water would be let in to maintain the artificial salt sea at the 90 m level and as the water evaporates more sea water would be sent through the penstocks to generate more electricity.

References and external links

  • Annotations. Central University Libraries at Southern Methodist University. Vol. VI, No. 1, Spring 2004.
  • Manlius, M., Menardi-Noguera, A. and Andras Zboray, A. (2003). Decline of the Barbary sheep (Ammotragus lervia) in Egypt during the 20th century: literature review and recent observations. J. Zool. (London) 259: 403–409.
  • Nora Berrahmouni and Burgess, Neil (2001] Saharan halophytics (PA0905). World Wildlife Fund; online.
  • Saleh, M.A., Helmy, I. and Giegengack (2001) The Cheetah, Acinonyx jubatus (Schreber, 1776) in Egypt (Felidae, Acinonychinae). Mammalia 65 (2): 177-194.
  • Mediterranean-Qattara Hydro-electric Proposal

 
 

Join the WikiAnswers Q&A community. Post a question or answer questions about "Qattara Depression" at WikiAnswers.

 

Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Columbia Encyclopedia. The Columbia Electronic Encyclopedia, Sixth Edition Copyright © 2003, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Qattara Depression" Read more

Search for answers directly from your browser with the FREE Answers.com Toolbar!  
Click here to download now. 

Get Answers your way! Check out all our free tools and products.

On this page:   E-mail   print Print  Link  

 

Keep Reading

Mentioned In: