Swarm of earthquakes shake Yellowstone

YELLOWSTONE NATIONAL PARK

POSTED: 9:14 AM Sep 22 2013
Yellowstone National Park
JACKSON, Wyo. -

Scientists have been busy monitoring earthquake swarms in and around the Yellowstone Caldera.
    
University of Utah geophysics professor Bob Smith says they have come across three simultaneous earthquake swarms.
    
He calls the simultaneous swarms "remarkable."
    
Smith tells the Jackson Hole News & Guide (http://bit.ly/16aaX8K) that the swarms have left many questions for scientists to ponder.
    
He says that's because concurrent swarms have never been detected in the past.
    
Temblors from the three quake swarms mostly hit in three areas: Lewis Lake, the Lower Geyser Basin and the northwest part of Norris Geyser Basin. A total of 130 earthquakes ranging from magnitude 0.6 to 3.6 were observed.
    
Yellowstone's recent earthquake swarms started on Sept. 10 and were shaking until about 11:30 a.m. Sept. 16.