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Thursday, March 2, 2006

 

Yellowstone Volcano Grows as Geysers Reawaken

`Forces brewing deep beneath Yellowstone National Park could be making one of the largest volcanoes on Earth even bigger, a new study reveals.

In the past decade, part of the volcano has risen nearly five inches, most likely due to a backup of flowing molten rock miles below the planet’s crust. [..]

Radar observations from the European Space Agency’s ERS-2 satellite reveal that the jellybean-shaped Yellowstone caldera—a giant depression caused by past volcanic explosions—began to rise in 1995.

Although the caldera floor started to sink in late 1997, part of the north rim, called the north rim uplift anomaly (NUA) continued rising until 2003.’




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