An earthquake results from a sudden energy release in the earth’s crust that causes a seismic wave which in turn causes shaking of the ground and leads to devastating occurrences.
Areas with greatest concentration of earthquakes:
Although limits do not exist to the probable magnitude of earthquakes, the largest in historic times as noted by: Debora, 2012 was slightly above a magnitude of 9.0 which occurred in Japan in 2011. Areas with greatest concentration of earthquakes in the US include: Alaska, California, Hawaii, Nevada, Washington, Idaho, Wyoming, Montana, Utah and Oregon
Reasons for greatest concentration of earthquakes in these areas:
Aftershocks: areas which have previously experienced earthquakes are more prone to earthquakes because the ground here ...