Deep Tremor Shakes Earth

[shy]

hat tip:  Marc/Berkley of Syzygy
Deep Tremor Shakes the Earth
http://news.yahoo.com/s/livescience/20100714/sc_livescience/deeptremorshakestheearth

Brett Israel, OurAmazingPlanet Staff Writer
livescience.com
Wed Jul 14

"The Earth doesn't shake only after violent volcanoes or earthquakes. A recently discovered phenomenon known as "deep tremor" also rumbles the globe. . . . "

Read article to discover how & why.  

[Mizar]

Good Post Shy;
  Last year we had two weeks of deep rumbling along the Juan de Fuca plate off of Vancouver Island.
  M

[shy]

Another slow tremor beneath Olympic Peninsula
University of Washington seismologists are closely monitoring another slow-moving tremor that's been detected under the Olympic Peninsula.
The Associated Press

SEATTLE —

". . . .  So-called "tremor-and-slip" events have occurred about every 15 months since they were first detected in 2002. The latest was found early Sunday north of Olympia and west of Tacoma, and is expected to travel north under the peninsula toward Vancouver Island. UW scientists say it can't be felt at the surface, but over the course of several weeks can release as much energy as a magnitude 6 earthquake.

Researchers believe the tremors may be associated with stress building in the Cascadia subduction fault zone, about 50 miles off the Pacific coast . . . . "

article continues @ http://seattletimes.nwsource.com/html/localnews/2012594647_apwaslowtremor1stldwritethru.html