Start Date: End Date: Published Date Data Date
Penny Ice Cap in 1979 and 2000
2105 x 2105 2 MB - JPEG
Published September 18, 2008
Penny Ice Cap is the southernmost of Canada’s big ice caps. Like other glaciers and ice caps in the Northern Hemisphere, the Penny has been thinning and its valley glaciers have been retreating in recent decades.
Related images:
2000 x 2000 10 MB - GeoTIFF
4000 x 4000 4 MB - JPEG
4000 x 4000 32 MB - GeoTIFF
47 KB - KML/KMZ
Mississippi River Delta
1500 x 1500 3 MB - GeoTIFF
Published October 7, 2007
Time, weather, and human intervention have all shaped the Mississippi Delta in Louisiana, a giant bird’s foot shape protruding into the Gulf of Mexico. The Mississippi River deposits sediment into the ocean, and over 25 years, NASA Landsat satellites observed changes in the delta’s shape.
1500 x 1500 2 MB - JPEG
3000 x 3000 4 MB - JPEG
3000 x 3000 13 MB - GeoTIFF
185 KB - KML/KMZ
The Shrinking Aral Sea
4433 x 4079 22 MB - GeoTIFF
Published May 5, 2001
The sequence of images shows the dramatic changes to the Aral Sea between 1973 and 2000.
540 x 867 JPEG
11877 x 5314 8 MB - JPEG
7793 x 7067 80 MB - GeoTIFF
8568 x 7673 108 MB - GeoTIFF
107 KB - KML/KMZ