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Retreating Glaciers Spur Alaskan Earthquakes
The study examined the likelihood of increased earthquake activity in southern Alaska as a result of rapidly melting glaciers. As glaciers melt they lighten the load on the Earth's crust. Tectonic plates, that are mobile pieces of the Earth's crust, can then move more freely.

See the difference in the Bering Glacier from October 1986 to September 2002. These images were derived from the Landsat 5 and Landsat 7 satellites.    See the difference in the Bering Glacier from October 1986 to September 2002. These images were derived from the Landsat 5 and Landsat 7 satellites.
Duration: 16.0 seconds
Available formats:
  720x480 (29.97 fps) MPEG-2   13 MB
  352x240 (30 fps) MPEG-1   4 MB
  363x59       GIF           1010 KB
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A wide shot of the Bering Glacier, October 1986.    A wide shot of the Bering Glacier, October 1986.

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  80 x 40             PNG   8 KB


A medium shot of the Bering Glacier, October 1986.    A medium shot of the Bering Glacier, October 1986.

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A close up of the Bering Glacier, October 1986.    A close up of the Bering Glacier, October 1986.

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A wide view of the Bering Glacier, September 2002.    A wide view of the Bering Glacier, September 2002.

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A medium view of the Bering Glacier, September 2002.    A medium view of the Bering Glacier, September 2002.

Available formats:
  1280 x 720       TIFF 1 MB
  320 x 180         JPEG 10 KB


A close up view of the Bering Glacier, September 2002.    A close up view of the Bering Glacier, September 2002.

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  320 x 180         JPEG 12 KB

Animation Number:2968
Animators:Stuart A. Snodgrass (Lead)
 Marte Newcombe
Studio:SVS
Completed:2004-07-30
Scientist:Jeanne Sauber (NASA/GSFC)
Instruments:Landsat-5/TM
 Landsat-7/ETM+
Data set:Blue Marble
Data Collected:1993/01/18, 2001/11/16
Series:Glacier Earthquakes
Goddard TV Tape:G2004-042
Keywords:
SVS >> Earthquake
SVS >> Glacier
GCMD >> EARTH SCIENCE >> Cryosphere >> Glaciers/Ice Sheets >> Glaciers
GCMD >> Location >> Alaska
SVS >> Bering Glacier
More Information on this topic available at:
http://www.gsfc.nasa.gov/topstory/2004/0715glacierquakes.html
 
 
Please give credit for this visualization to
NASA/Goddard Space Flight Center
Scientific Visualization Studio


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