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Accelerating Ice Sheet

During the summer melt season, melt water accumulates in undulations on the surface of the Greenland ice sheet. Eventually, these melt lakes drain through crevasses or moulins (tunnels under the ice sheet surface), delivering water to the bottom of the ice sheet. This melt water lubricates the interface between the ice and the bedrock, causing the ice to flow faster toward the sea during summer. As summer melt increases and more melt water is available, the greater its effect on summer ice sheet flow rates.
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Greenland Accerating Ice Sheet animation.    Greenland Accerating Ice Sheet animation.
Duration: 17.0 seconds
Available formats:
  512x288 (30 fps) MPEG-1   6 MB
  512x288 (60 fps) MPEG-1   7 MB
  1280x720 (60 fps) MPEG-2   45 MB
  1280x720 (60 fps) Frames
  512x288 (30 fps) MPEG-1   11 MB
  1280x720 (30 fps) MPEG-2   69 MB
  1280x720 (30 fps) MPEG-4   15 MB
  1280x720 (30 fps) Frames
  320x180     PNG           197 KB
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Short URL to This Page:http://svs.gsfc.nasa.gov/goto?20111
Animation Number:20111
Completed:2007-08-22
Animator:Susan Twardy (HTSI) (Lead)
Writer:Maria Frostic (UMBC)
Please give credit for this item to:
NASA/Goddard Space Flight Center Conceptual Image Lab
 
Keywords:
SVS >> HDTV
SVS >> Copenhagen
 
 


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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 8.0.0.0.0

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