NEW : An expert says he thinks an injection well is related to the spate of Ohio quakes . NEW : A new study suggests that a natural gas leak in Pennsylvania could be linked to earthquakes, but it's not clear if this will lead to more quakes or just make them worse. The state of Ohio has documented 11 `` seismic events '' in 2011 -- each of them , at that point , of magnitude 2.7 or lower . NEW : A Youngstown man says after the tremor , `` I could see the house move '' The quake was centered 5 miles northwest of Youngstown and 1.4 miles below the surface .
NEW : An expert says he thinks an injection well is related to the spate of Ohio quakes . NEW : A new study suggests that a natural gas leak in Pennsylvania could be linked to earthquakes, but it's not clear if this will lead to more quakes or just make them worse. NEW : A Youngstown man says after the tremor , `` I could see the house move '' The quake was centered 5 miles northwest of Youngstown and 1.4 miles below the surface .