January 6, 2015 | by Justine Alford
A new study, released by the Seismological Society of America on Monday, has confirmed that a series of small earthquakes experienced in Ohio were triggered by fracking activity. This seismic sequence, which took place in March 2014, comprised five recorded earthquakes, ranging from magnitude 2.1 to 3.0.
One of these events was a rare “felt” earthquake, meaning it was large enough to be felt by people in nearby towns, although it didn’t pose any risk and didn’t cause damage. Given the fact that the events took place within one kilometer (0.6 miles) of a group of oil and gas wells, state officials decided to halt operations two days after the 3.0 quake hit. Since then, scientists have been scouring through seismic data to determine whether the fracking activity was to blame, and the results have now been published in the Bulletin of the Seismological Society of America.