11 Feb '12, 11pm

Amery Ice Shelf: Rifts form a triple junction along the edge of a giant loose tooth in East Antarctica.

Several glaciers in East Antarctica, including the Lambert Glacier, share the same route to the ocean through the Amery Ice Shelf. Although comprising just a tiny portion of the Antarctic coastline, this ice shelf drains roughly 16 percent of the East Antarctic Ice Sheet. The Amery deposits ice into the ocean through the natural, cyclical process of iceberg calving—a process that can take decades to complete. The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite captured this natural-color image on January 27, 2012. It shows a portion of the Amery Ice Shelf, where three giant cracks, or rifts, meet. The largest rift runs in the same direction as the ice flow, and widens toward the edge of the ice shelf (image center). Smaller rifts extend toward the east and west, and the tip of the western rift narrows and curves significantly (image lower left). The...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=77132&s...

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earthobservatory.nasa.gov 11 Feb '12, 11pm

Several glaciers in East Antarctica, including the Lambert Glacier, share the same route to the ocean through the Amery Ic...

Amery Ice Shelf [image] #NASA

earthobservatory.nasa.gov 11 Feb '12, 11pm

Several glaciers in East Antarctica, including the Lambert Glacier, share the same route to the ocean through the Amery Ic...

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Off the northeastern edge of Antarctica’s Amery Ice Shelf lies Mackenzie Bay, which was painted with a ghostly blue-green ...