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Greenland's Mega Canyon (narrated video)

Hidden for all of human history, a 460 mile long canyon has been discovered below Greenland's ice sheet. Using radar data from NASA's Operation IceBridge and other airborne campaigns, scientists led by a team from the University of Bristol found the canyon runs from near the center of the island northward to the fjord of the Petermann Glacier.

A large portion of the data was collected by IceBridge from 2009 through 2012. One of the mission's scientific instruments, the Multichannel Coherent Radar Depth Sounder, operated by the Center for the Remote Sensing of Ice Sheets at the University of Kansas, can see through vast layers of ice to measure its thickness and the shape of bedrock below.

This is a narrated version of an animation that can be found, along with more detailed information, here:

Greenland's Mega-Canyon beneath the Ice Sheet (id 4097)

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For complete transcript, click here.
Duration: 1.2 minutes
Available formats:
  720x480 (29.97 fps) WMV         40 MB
  1280x720 (29.97 fps) QT         45 MB
  640x360 (29.97 fps) MPEG-4   14 MB
  640x360 (29.97 fps) QT         35 MB
  1280x720 (59.94 fps) QT         1 GB
  1280x720 (29.97 fps) WMV         42 MB
  960x540 (29.97 fps) MPEG-4   36 MB
  320x240 (29.97 fps) MPEG-4   7 MB
  960x540 (29.97 fps) WEBM         17 MB
  1024x576   JPEG         189 KB
  320x180     PNG           117 KB
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Animation Number:11354
Producer:Jefferson Beck (USRA)
Scientists:J. L. Bamber (School of Geographical Sciences, University of Bristol, UK)
 Michael Studinger (NASA/GSFC)
Videographer:Michelle Williams (UMBC)
Writer:George R. Hale (Telophase Corp.)
Series:Narrated Movies
Please give credit for this item to:
NASA's Goddard Space Flight Center
SVS >> Operation IceBridge
SVS >> Greenland
NASA Science >> Earth

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Many of our multimedia items use the GCMD keywords. These keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version logo - the U.S. Government's official Web portal. + Privacy Policy and Important Notices
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