'Yardangs' on Mars : News Photo

'Yardangs' on Mars

Credit: 
NASA / Contributor
UNITED STATES - JULY 18: These images of 'yardangs', features sculpted by wind-blown sand seen here near Olympus Mons on Mars, were obtained by the High Resolution Stereo Camera (HRSC) on board the ESA Mars Express spacecraft. This image was taken during orbit 143 with a resolution of 20 metres per pixel. This scene shows a structure south of Olympus Mons at 60 N latitude and 2200 E longitude, which was probably formed by the action of the wind. Loose sand fragments were transported by wind, and impacted on the bedrock, slowly removing parts of the surface, like a sand-blaster. If the winds blow in the same direction for a long enough period, 'wind-lanes', as shown in the picture, can occur. On Earth, the remnants of these features which have not been eroded away are called 'yardangs'. Where the surface consists of more resistant material, the force of the wind may not be strong enough to cause this sand-blasting. This might be the reason for the three flat regions (the first in the foreground on the left, and the others top right), which measure about 17 by 9 kilometres. (Photo by NASA/SSPL/Getty Images)
Caption:
UNITED STATES - JULY 18: These images of 'yardangs', features sculpted by wind-blown sand seen here near Olympus Mons on Mars, were obtained by the High Resolution Stereo Camera (HRSC) on board the ESA Mars Express spacecraft. This image was taken during orbit 143 with a resolution of 20 metres per pixel. This scene shows a structure south of Olympus Mons at 60 N latitude and 2200 E longitude, which was probably formed by the action of the wind. Loose sand fragments were transported by wind, and impacted on the bedrock, slowly removing parts of the surface, like a sand-blaster. If the winds blow in the same direction for a long enough period, 'wind-lanes', as shown in the picture, can occur. On Earth, the remnants of these features which have not been eroded away are called 'yardangs'. Where the surface consists of more resistant material, the force of the wind may not be strong enough to cause this sand-blasting. This might be the reason for the three flat regions (the first in the foreground on the left, and the others top right), which measure about 17 by 9 kilometres. (Photo by NASA/SSPL/Getty Images)
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Date created:
July 18, 2011
Editorial #:
138596756
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Not released.More information
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SSPL
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SSPL via Getty Images
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SSPL
Object name:
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These images of 'yardangs' features sculpted by windblown sand seen... News Photo 138596756Board,Brown,Close To,Color Image,Feature,Horizontal,Image,Landscape,Mars,NASA,Olympus Mons,Photography,Sand,Sand Sculpture,Satellite View,Science and Technology,Sculpture,Setting,Solar System,Space Exploration,Space Travel Vehicle,USAPhotographer Collection: SSPL SSPL/NASAUNITED STATES - JULY 18: These images of 'yardangs', features sculpted by wind-blown sand seen here near Olympus Mons on Mars, were obtained by the High Resolution Stereo Camera (HRSC) on board the ESA Mars Express spacecraft. This image was taken during orbit 143 with a resolution of 20 metres per pixel. This scene shows a structure south of Olympus Mons at 60 N latitude and 2200 E longitude, which was probably formed by the action of the wind. Loose sand fragments were transported by wind, and impacted on the bedrock, slowly removing parts of the surface, like a sand-blaster. If the winds blow in the same direction for a long enough period, 'wind-lanes', as shown in the picture, can occur. On Earth, the remnants of these features which have not been eroded away are called 'yardangs'. Where the surface consists of more resistant material, the force of the wind may not be strong enough to cause this sand-blasting. This might be the reason for the three flat regions (the first in the foreground on the left, and the others top right), which measure about 17 by 9 kilometres. (Photo by NASA/SSPL/Getty Images)