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Is She About To Blow? Scientists Investigate Riddle of Rapidly Inflating Volcano

Daily Mail

A previously dormant South American volcano is inflating with astonishing speed, scientists have discovered.

Researchers from several U.S. universities say Uturuncu, which rises 6,000 meters in southwest Bolivia, is blowing up like a big balloon as its magma chamber grows around 10 times faster than normal.

'It's one of the fastest uplifting volcanic areas on Earth,' said Oregon State University professor, Shan de Silva.

Waking up: Uturuncu, which rises 6,000 meters in southwest Bolivia, is blowing up like a big balloon, according to scientists
Waking up: Uturuncu, which rises 6,000 meters in southwest Bolivia, is blowing up like a big balloon, according to scientists

'What we're trying to do is understand why there is this rapid inflation, and from there we'll try to understand what it's going to lead to,' said de Silva in an interview with MyAmazingPlanet.

Uturuncu is classed as a 'stratovolcano' - the most common type. But there is some concern that its rapid growth could indicate that a supervolcano is on its way.

A supervolcano erupts with such power that it can shoot out 1,000 times more material than a stratovolcano like Uturuncu or Mount St Helens in Washington. It can also have a devastating global effect.

Like Mount St Helens in Washington, Uturuncu is classed as a 'stratovolcano'. But its growth could indicate it may be turning into a 'supervolcano'
Like Mount St Helens in Washington, Uturuncu is classed as a 'stratovolcano'. But its growth could indicate it may be turning into a 'supervolcano'

Modern man has never witnessed such an event. The last supervolcanic eruption occurred around 74,000 years ago in Indonesia.

However, the researchers looking at Uturuncu are quietly confident there is nothing to worry about.

'It's not a volcano that we think is going to erupt at any moment, but it certainly is interesting, because the area was thought to be essentially dead, professor de Silva said.

Stratovolcanoes are conical shaped and deliver periodic, explosive eruptions
Stratovolcanoes are conical shaped and deliver periodic, explosive eruptions

The Yellowstone Caldera in the U.S. is classed as a supervolcano, a type that can erupt 1,000 times more material than a stratovolcano
The Yellowstone Caldera in the U.S. is classed as a supervolcano, a type that can erupt 1,000 times more material than a stratovolcano

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October 27, 2011

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