[Geysers] Swarm dwindles

[Freund, Udo]

Just as an FYI - this AP story ran in today's Billings Gazette.

"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. Its 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."

Epicenters were clustered about halfway between West and Old Faithful.  I believe the largest was magnitude 3.8, the same as today's quake in northern Illinois.  Hmmmm.

Thanks,
Udo Freund

"Even if you're on the right track, you'll get run over if you just sit there."
--Will Rogers


-------------- next part --------------
An HTML attachment was scrubbed...
URL: </geyser-list/attachments/20100210/d61e8912/attachment.html>