Earthquakes: ’Remarkable’ spate of man-made quakes linked to drilling, USGS team says — eenews
http://www.eenews.net/public/energywire/2012/03/29/1
A remarkable increase in the rate of [magnitude-3.0] and greater earthquakes is currently in progress," the scientists state in the abstract for their study. “A naturally-occurring rate change of this magnitude is unprecedented outside of volcanic settings or in the absence of a main shock.”
The surge in temblors is “almost certainly man-made,” they found, and all of the potential causes they explore in the paper relate to drilling, or more specifically, deep underground injection of drilling waste.
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