Fracking and energy exploration connected to earthquakes, say studies

Publication: NBC News   Date: July 11, 2013   View Article

The rivers of water pumped into and out of the ground during the production of natural gas, oil and geothermal energy are causing the Earth to shake more frequently in areas where these industrial activities are soaring, according to a series of studies published today.

While the gas extraction process known as hydraulic fracturing (aka “fracking”) causes some small quakes, it’s the disposal of wastewater following that process — and many others relating to energy production — that lead to the largest tremors.

“Fortunately, there have been no deaths and damage has been limited to date, but it is obviously of concern to people as we think about the future of the energy economy,” William Ellsworth, a seismologist with the United States Geological Survey in Menlo Park, Calif., told NBC News.

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