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Richat structure - Mauritania - satellite view - Richat structure, Mauritania, seen by satellite -...
IMAGE
number
PIX4659064
Image title
Richat structure - Mauritania - satellite view - Richat structure, Mauritania, seen by satellite - Richat structure is a geological formation of volcanic origin in Mauritania. This “eye” measures 50 km in diameter. This image is a combination of an image obtained by the Landsat satellite in 1987 and a radar image obtained from the Space Shuttle (SRTM) in 2000. The relief is exaggerated by about 6 times. The picture covers an area of 68 km by 112 km. This prominent circular feature, known as the Richat Structure, in the Sahara desert of Mauritania is often noted by astronauts because it forms a conspicuous 50 - kilometer - wide (30 - mile - wide) bull's - eye on the otherwise rather featureless expanse of the desert. Initially mistaken for a possible impact crater, it is now known to be an eroded circular anticline (structural dome) of layered sedimentary rocks. Extensive sand dunes occur in this region and the interaction of bedrock topography, wind, and moving sand is evident in this scene. Note especially how the dune field ends abruptly short of the cliffs at the far right as wind from the northeast (lower right) apparently funnels around the cliff point, sweeping clean areas near the base of the cliff. Note also the small isolated peak within the dune field. That peak captures some sand on its windward side, but mostly deflects the wind and sand around its sides, creating a sand - barren streak that continues far downwind. This view was generated from a Landsat satellite image in 1987 draped over an elevation model produced by the Shuttle Radar Topography Mission (SRTM). The view uses a 6 - times vertical exaggeration to greatly enhance topographic expression. For vertical scale, note that the height of the mesa ridge in the back center of the view is about 285 meters (about 935 feet) tall. Colors of the scene were enhanced by use of a combination of visible and infrared bands, which helps to differentiate bedrock (browns), sand (yellow, so
Richat structure - Mauritania - satellite view - Richat structure, Mauritania, seen by satellite - Richat structure is a geological formation of volcanic origin in Mauritania. This “eye” measures 50 km in diameter. This image is a combination of an image obtained by the Landsat satellite in 1987 and a radar image obtained from the Space Shuttle (SRTM) in 2000. The relief is exaggerated by about 6 times. The picture covers an area of 68 km by 112 km. This prominent circular feature, known as the Richat Structure, in the Sahara desert of Mauritania is often noted by astronauts because it forms a conspicuous 50 - kilometer - wide (30 - mile - wide) bull's - eye on the otherwise rather featureless expanse of the desert. Initially mistaken for a possible impact crater, it is now known to be an eroded circular anticline (structural dome) of layered sedimentary rocks. Extensive sand dunes occur in this region and the interaction of bedrock topography, wind, and moving sand is evident in this scene. Note especially how the dune field ends abruptly short of the cliffs at the far right as wind from the northeast (lower right) apparently funnels around the cliff point, sweeping clean areas near the base of the cliff. Note also the small isolated peak within the dune field. That peak captures some sand on its windward side, but mostly deflects the wind and sand around its sides, creating a sand - barren streak that continues far downwind. This view was generated from a Landsat satellite image in 1987 draped over an elevation model produced by the Shuttle Radar Topography Mission (SRTM). The view uses a 6 - times vertical exaggeration to greatly enhance topographic expression. For vertical scale, note that the height of the mesa ridge in the back center of the view is about 285 meters (about 935 feet) tall. Colors of the scene were enhanced by use of a combination of visible and infrared bands, which helps to differentiate bedrock (browns), sand (yellow, so
Personal Prints, Cards, Gifts, Reference. Not for commercial use, not for public display, not for resale.
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$25.00
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Use in a presentation. All languages, 3 years. Personal presentation use or non-commercial, non-public use within a company or organization only.
$50.00
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Use on a company website, in a company social media post/page/blog, in an app or in a corporate presentation (internal or external). Not for advertising or collateral. All languages, 3 years.
$190.00
Editorial (Books, magazines and newspaper) - standard
Print and/or digital. Single use, any size, inside only. Single language only. Single territory rights for trade books; worldwide rights for academic books. Print run up to 1500. 7 years. (excludes advertising)
eg:Illustrate the inside of a book or magazine with a print run of 1,000 units
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Editorial (Books, magazines and newspaper) - extended
Print and/or digital. Single use, any size, inside only. Single language only. Single territory rights for trade books; worldwide rights for academic books. Print run up to 5000. 7 years. (excludes advertising)
eg: Illustrate the inside of a book or magazine with a print run of 5,000 units
