Fracking In Ohio Triggered 400 Tiny Earthquakes Over 3-Month Period, Scientists Say
by Emily Atkin Posted on October 15, 2014 at 3:13 pm
This certainly isn’t the first time seismologists have reported increased frequency and intensity of earthquakes in areas where fracking is prolific.
But what makes this research different from most is that it credits earthquakes to the process of fracking itself — the actual process of cracking underground shale rock with high-pressure fracking fluid.
Most other studies on artificial earthquakes don’t credit fracking itself. Instead, they credit the process of wastewater injection: a.k.a, taking the leftover water used to frack the well and disposing of it by injecting it back underground. Scientists increasingly believe that the underground fluid migrates along dormant fault lines, re-activating them and causing earthquakes.
http://thinkprogress.org/climate/2014/10/15/3580192/ohio-fracking-earthquakes-2/Fracking Linked to More Ohio Earthquakes
October 14, 2014 05:00pm ET
Another rare case of fracking-caused earthquakes has jolted Ohio.
A new study connects some 400 micro-earthquakes in Harrison County, near the town of Canton, to hydraulic fracturing wells. The three wells operated from September through October 2013 in the Utica Shale. Ten of the quakes registered between magnitude 1.7 and magnitude 2.2, but the tremors were too deep to cause damage or to be easily felt by people, according to the study, published today (Oct. 14) in the journal Seismological Research Letters.
The new study is the second report this year of fracking-linked earthquakes from drilling in the Utica Shale.
http://www.livescience.com/48294-fracking-caused-ohio-earthquakes.html
They were microquakes, but still, 400 quakes were caused directly by fracking. They hit a fault line.
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