Confirmed: Fracking practices to blame for Ohio earthquakes
Sep. 4, 2013 at 3:54 PM ET
Wastewater from the controversial practice of fracking appears to be linked to all the earthquakes in a town in Ohio that had no known past quakes, research now reveals.
The practice of hydraulic fracturing, or fracking, involves injecting water, sand and other materials under high pressures into a well to fracture rock. This opens up fissures that help oil and natural gas flow out more freely. This process generates wastewater that is often pumped underground as well, in order to get rid of it.
A furious debate has erupted over the safety of the practice. Advocates claim fracking is a safe, economical source of clean energy, while critics argue that it can taint drinking water supplies, among other problems.
One of the most profitable areas for fracking lies over the geological formation known as the Marcellus Shale, which reaches deep underground from Ohio and West Virginia northeast into Pennsylvania and southern New York. The Marcellus Shale is rich in natural gas; geologists estimate it may contain up to 489 trillion cubic feet (13.8 trillion cubic meters) of natural gas, more than 440 times the amount New York State uses annually. Many of the rural communities living over the formation face economic challenges and want to attract money from the energy industry.
Youngstown quakes
Before January 2011, Youngstown, Ohio, which is located on the Marcellus Shale, had never experienced an earthquake, at least not since researchers began observations in 1776. However, in December 2010, the Northstar 1 injection well came online to pump wastewater from fracking projects in Pennsylvania into storage deep underground. In the year that followed, seismometers in and around Youngstown recorded 109 earthquakes, the strongest registering a magnitude-3.9 earthquake on Dec. 31, 2011. The well was shut down after the quake.
Scientists have known for decades that fracking and wastewater injection can trigger earthquakes. For instance, it appears linked with Oklahoma’s strongest recorded quake in 2011, as well as a rash of more than 180 minor tremors in Texas between Oct. 30, 2008, and May 31, 2009.
The new investigation of the Youngstown earthquakes, detailed in the July issue of the journal Geophysical Research Letters, reveals that their onset, end and even temporary dips in activity were apparently all tied to activity at the Northstar 1 well.
Continue reading Frack Waste Injection Wells Blamed for Earthquakes in OH & PA


In a White House handout photo, President Barack Obama meets with his national security staff to discuss the situation in Syria, in the Situation Room of the White House, in Washington, Aug. 31, 2013. (Photo: Pete Souza / The White House via The New York Times)

