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Fire may smolder under Antarctic ice

Quakes hint at moving magma that could influence glacial flow

1:00pm, November 17, 2013

ICY HOT  Data from seismic recording equipment, which researchers dragged across West Antarctica, reveal that magma may be moving under the ice.

Quivers in the remote West Antarctic have all the hallmarks of volcanoes and magma under the ice, according to a study appearing November 17 in Nature Geoscience.  

Volcanic activity in the continent’s crust could hasten the flow of its ice sheet to the ocean, scientists say.

Using 37 seismic stations, earth scientist Amanda Lough of Washington University in St. Louis and colleagues recorded hundreds of rumbles on the frozen continent in 2010 and 2011. The tremors’ frequencies and depths – between 25 and 40 kilometers below the ice — are similar to those recorded under active volcanoes in other parts of the world.

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