1:41 PM Sun 6 Mar 2011 GMT
The discovery of numerous large ice structures within Antarctica?s Dome A region, the site of the buried ?ghost mountains?, reveals new understanding about ice sheet growth and movement that is essential for predicting how the ice sheet may change as the Earth?s climate warms. Reporting this week in the journal Science a six-nation group of scientists studying the Gamburtsev Subglacial Mountains describe how these remarkable structures form. Typically ice sheets grow when layers of snow are deposited on the surface, but the researchers found startling new evidence of growth at the base. Widespread re-freezing of large volumes of water to
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by British Antarctic Survey & Lamont-Doherty