On average, each year sees 134 earthquakes in the 6-6.9 range worldwide. So 2 or 3 big quakes every week is typical. https://earthquake.usgs.gov/earthquakes/eqarchives/year/eqstats.php
Archiving my Twitter, Facebook and other social network activity
On average, each year sees 134 earthquakes in the 6-6.9 range worldwide. So 2 or 3 big quakes every week is typical. https://earthquake.usgs.gov/earthquakes/eqarchives/year/eqstats.php