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Image: SafsafOasis SAR comparison

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SafsafOasis_SAR_comparison.jpg ‎(540 × 588 pixels, file size: 154 KB, MIME type: image/jpeg)

Description: Two images of the Safsaf Oasis in The Sahara. The top image (taken by the Landat Thematic Mapper) is the surface. The bottom (taken by the Spaceborne Imaging Radar-C/X-band Synthetic Aperture Radar (SIR-C/X-SAR) on board the Space Shuttle Endeavour on April 16, 1994) is the rock layer underneath, revealing black channels cut by the meandering of an ancient river.
Title: SafsafOasis SAR comparison
Credit: http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=16963
Author: NASA/JPL Imaging Radar team.
Permission: Public domain
Usage Terms: Public domain
License: Public domain
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