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National Geographic: to a centimeter a year or less. Still, since the start of the swelling, ground levels over the volcano have been raised by as much as 10 inches (25 centimeters) in places. "It's an extraordinary uplift, because it covers such a large area and the rates are so high," said the University of Utah's Bob Smith, a longtime expert in Yellowstone's volcanism. Scientists think a swelling magma reservoir four to six miles (seven to ten kilometers) below the surface is driving the uplift. Fortunately, the......
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Yellowstone Has Bulged as Magma Pocket Swells
Posted by Washington Post: Juliet Eilperin on January 19th, 2011
Posted in Water Conservation