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Is Fracking Behind Oklahoma’s Earthquakes? - (Includes Link to Study - 31 Pages)

Tue, 2011-11-08 23:46 — Kathy Gilbeaux

Reuters - November 7, 2011

One of the strongest earthquakes in the history of Oklahoma hit near the town of Sparks on Saturday night. At 5.6 in magnitude, it was the bell-ringer of a series of shakes. What is not clear is where this unusual seismic activity is coming from. The Oklahoman reported:

After the main shock, there were 12 temblors registering at magnitudes of 3.0 or higher and more than 70 quakes with magnitudes of 1.0 to 2.5, Oklahoma Geological Survey research scientist Amie Gibson said Sunday.

“We really hope that the 5.6 was the main shock because I don’t want to see anything like that again, personally. It would be ignorant to assume anything right now, because who would assume that we’d have the two biggest ones in one day?” Gibson said.

Before Saturday night, the strongest earthquake recorded was April 9, 1952, in El Reno, according to the geological survey. Its magnitude was 5.5.

U.S. Geological Survey geophysicist Don Blakeman said the agency doesn’t know why Saturday’s quakes struck so close together.

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District of Columbia Earthquake History

Wed, 2011-08-24 22:02 — Kathy Gilbeaux

District of Columbia Earthquake History

http://earthquake.usgs.gov/earthquakes/states/district/history.php  

No historical earthquake has been centered within the District of Columbia.

Ground vibrations from earthquakes in such seismic regions as the St. Lawrence River Valley, Missouri, Ohio, Virginia, and South Carolina have been felt by D.C. residents, but have caused no damage. A great earthquake which did considerable damage at Guadeloupe, West Indies, was felt in the Eastern United States, especially at Washington, D.C., in 1843.

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Researchers Develop Controversial Earthquake Detection Network

Thu, 2011-08-18 21:41 — Kathy Gilbeaux

Homeland Security Newswire - August 18, 2011

       

A QuakeFinder network installation // Source: newsvine.com

Researchers at a Silicon Valley company are hard at work developing an experimental network of electromagnetic sensors that could predict large earthquakes as much as two weeks in advance; the theory behind the research is disputed, but Tom Bleier, the inventor and chief engineer behind project QuakeFinder, hopes to prove seismologists wrong.

Researchers at a Silicon Valley company are hard at work developing an experimental network of electromagnetic sensors that could predict large earthquakes as much as two weeks in advance.

The theory behind the research is disputed, but Tom Bleier, the inventor and chief engineer behind project QuakeFinder, hopes to prove seismologists wrong. Under the project, engineers will install roughly 200 five-foot tall sensors near fault lines in California to measure changes in underground magnetic fields and to detect electrically charged particles in the air.

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