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Swarm of earthquakes shake Yellowstone National Park

Mihai AndreibyMihai Andrei
September 23, 2013
in Geology
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faithful

In his 53 years of monitoring seismic activity in and around the Yellowstone Caldera, Bob Smith has never witnessed two simultaneous earthquake swarms; now, the Utah University geophysicist has seen not two, but three such swarms.

“It’s very remarkable,” Smith said. “How does one swarm relate to another? Can one swarm trigger another and vice versa?”

Because such an event is unprecedented, Smith doesn’t want to jump to conclusions, and doesn’t think this is a signal of any potential volcanic eruption.

“A total of 130 earthquakes of magnitude 0.6 to 3.6 have occurred in these three areas, however, most have occurred in the Lower Geyser Basin,” a University of Utah statement said. “Notably much of seismicity in Yellowstone occurs as swarms.”

No significant changes are to be expected, except possibly for geyser activity.

“We know that a significant enough earthquake in the region has potential to alter geyser activity,” the spokesman said. “A strong enough earthquake, like the one that occurred out at Hebgen Lake in 1959, did change the interval of Old Faithful eruptions.”

Tags: hotspotsupervolcanovolcanoyellowstone

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Mihai Andrei

Mihai Andrei

Dr. Andrei Mihai is a geophysicist and founder of ZME Science. He has a Ph.D. in geophysics and archaeology and has completed courses from prestigious universities (with programs ranging from climate and astronomy to chemistry and geology). He is passionate about making research more accessible to everyone and communicating news and features to a broad audience.

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