The primary 7.8 earthquake in Turkey occurred at 8:17 PM EST last night (Sunday). By the time Monday morning arrived, energy from seismic sensors had just about returned to normal (top of the chart, upper left is midnight Monday EST) when energy from the 7.5 aftershock arrived around 5:38 AM EST, accompanied by the 6.0 aftershock energy around 7:00 AM EST. The energy from these earthquakes traveled around the world and was detected by the #seismometers on #SignalMountain.