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Yellowstone earthquakes intensify

Howard Pankratz
The Denver Post

The swarm of earthquakes that started Sunday at Yellowstone National Park continued this morning and significantly intensified in magnitude Monday night.

At 8:39 p.m. Monday, a magnitude 3.3 earthquake was recorded followed by a 3.0 at 9:42 p.m.

So far today, quakes of 2.5, 2.6 and 2.7 have been recorded in the park.

As of 9:20 a.m. today, 424 earthquakes had been recorded in the swarm that started early Sunday, according to Jamie Farrell, a doctoral student in geophysics at the University of Utah, which operates more than two dozen earthquake recording stations in the park.

He said that seven people have told investigators they felt the 3.3 earthquake and another six the 3.0 quake.

Farrell said the quakes are occurring in an area about 5 miles from where the largest swarm of quakes was ever recorded in October 1985.

Prof. Robert B. Smith, a geophysicist at the University of Utah and one of the leading experts on earthquake and volcanic activity at Yellowstone, said that the activity is a “notable swarm.”

“The swarm is located about 10 miles northwest of Old Faithful, Wyo., and nine miles southeast of West Yellowstone, Montana,” said Smith.

Read more: http://www.denverpost.com/ci_14221601#ixzz0d4sF5EyO


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