Weston Observatory seismographs recorded the magnitude 3.4 aftershock in Virginia on September 1, 2011.
For more info on this earthquake, go to US Geological Survey report.
Seismogram of aftershock recorded on Weston Observatory seismograph:
Weston Observatory seismographs recorded the magnitude 3.4 aftershock in Virginia on September 1, 2011.
For more info on this earthquake, go to US Geological Survey report.
Seismogram of aftershock recorded on Weston Observatory seismograph:
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