This aerial photo was taken downstream from Subglacial Lake Engelhardt (nicknamed Lake Helen), looking toward the Ross Ice Shelf. Ridges on the ice surface are crevasses, or cracks in the ice. Shifting and deepening of crevasses that are visible in satellite images are indicators of ice movement. (Photo courtesy Christina Hulbe, Portland State University.)
National Geographic made a better presentation of the issue of 'ice flow' and how it is STOPPED by the resistance of ice shelves.
Antarctic Glaciers Surged After 1995 Ice-Shelf Collapse
John Roachfor National Geographic News
March 6, 2003
When a huge floating shelf of ice hinged to the northern end of the Antarctic Peninsula disintegrated in January 1995, several glaciers that were backed up into it surged towards the sea, according to a pair of Argentinean researchers.
The discovery marks the first positive evidence that glacial surge follows an ice shelf collapse. It may lead scientists to revive the previously discarded theory that ice shelves acts as dams that prevent inland glaciers from slipping into the seas.
John Roachfor National Geographic News
March 6, 2003
When a huge floating shelf of ice hinged to the northern end of the Antarctic Peninsula disintegrated in January 1995, several glaciers that were backed up into it surged towards the sea, according to a pair of Argentinean researchers.
The discovery marks the first positive evidence that glacial surge follows an ice shelf collapse. It may lead scientists to revive the previously discarded theory that ice shelves acts as dams that prevent inland glaciers from slipping into the seas.
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