This week’s earthquakes ranged from green to yellow on the USGS scale – how do they measure the impacts of a quake, and what do the colors mean?
In August of 2011, seismologists recorded an earthquake mainshock in Virginia and this author felt it in Windsor, Ontario. A lot happened before and since, including probable foreshocks, damaged structures, and aftershocks. The foreshocks are past, the damage is repaired but the aftershocks continue to this day, and there is a rush to research them. […]