pigrabbitbear writes "The massive rumbling energy released in an earthquake is from built-up stress within the Earth’s crust. Aftershocks aside, one might expect that such a release would let grinding tectonic plates chill out for awhile. Unfortunately, at the Fukushima Daiichi nuclear plant, seismic risk has increased since last March’s magnitude 9 earthquake. According to a report published in geoscience journal 'Solid Earth,' the massive quake actually reactivated a seismic fault near the plant."
Link to Original Source