Yellowstone quake swarm dwindles

2010-02-10T09:20:00Z Yellowstone quake swarm dwindlesThe Associated Press The Associated Press
February 10, 2010 9:20 am  • 

JACKSON, Wyo. - Yellowstone National Park earthquake researchers say a series of more than 1,800 small temblors that have rattled the park for nearly a month are dwindling.

The earthquake swarm began Jan. 17 near West Yellowstone, Mont. Robert Smith, a University of Utah professor of geophysics and coordinating scientist for the Yellowstone Volcano Observatory, said it's the largest swarm since a 1985 series that lasted three months.

The latest swarm is clustered in a region about six miles long and is focused about five miles below the surface of the earth. It included nearly a dozen earthquakes that were magnitude 3 or larger.

Smith said he doesn't think the quakes have stopped altogether, but he said activity has diminished to the point where researchers are no longer filing daily swarm reports.

Copyright 2015 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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