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Since 2009, NASA's mission
Operation IceBridge (OIB) has flown aircraft over the Antarctic Ice Sheet carrying laser and ice-penetrating radar instruments to collect data about the surface height, bedrock topography and ice thickness. Source
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joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use.
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
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The following pages on the
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states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."
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Click on a date/time to view the file as it appeared at that time.
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data may be copyrighted if they are not explicitly produced by the
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http://www.nasa.gov/topics/earth/features/antarctic-map.html
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