File:GrandErgOccidental STS059-238-88.jpg

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Summary

Description The Grand Erg Occidental (sand dune region) of north-central Algeria is the large sandy-looking area in the center of the photograph. This true desert region receives less than 10 inches (25 centimeters) of rainfall per year. The scale of this high-oblique, northwest-looking photograph does not permit the viewer to see the assortment of sandy landforms within the Grand Erg Occidental—linear dunes, star dunes, complex dunes, compound sheets, and sand streaks. The dark features to the southeast are the northwestern edge of the Tademait Plateau. The small dark specks near the southern edge of the photograph are very small oases and a few isolated circular field patterns (center-pivot irrigated fields). Immediately south of the large sand dunes region are several playas (dry lakebeds) where surface deposits of salt produce a highly reflective surface. The darker landforms near the western side of the photograph are slightly elevated bedrock outcrops whose ridge lines average 2000 feet (610 meters) above sea level. Near the horizon, the eastern end of the Atlas Mountains is barely discernible.
Date
Source http://earth.jsc.nasa.gov/sseop/EFS/photoinfo.pl?PHOTO=STS059-238-88
Author NASA
Permission
(Reusing this file)		 Public domain
This image or video was catalogued by one of the centers of the United States National Aeronautics and Space Administration (NASA) under Photo ID: STS059-238-88.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.
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Licensing

Public domain
This file is in the public domain in the United States because it was created by the Image Science & Analysis Laboratory, of the NASA Johnson Space Center. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA media use guidelines or Conditions of Use of Astronaut Photographs). Photo source: STS059-238-88.

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April 1994

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Date/TimeThumbnailDimensionsUserComment
current18:05, 18 January 2007Thumbnail for version as of 18:05, 18 January 2007640 × 630 (60 KB)Holly Cheng==Summary== {{Information |Description=w:Grand Erg Occidental, Algeria |Source=http://earth.jsc.nasa.gov/sseop/EFS/photoinfo.pl?PHOTO=STS059-238-88 |Date=April 1994 |Author=NASA |Permission=Public domain }} ==Licensing== {{AstronautPhoto|mission=STS0
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