Subduction Zone
Veteran Member
Such statistics are meaningless. Seismography, like all other sciences, is constantly improving. The main reason there are "more" earthquakes in many regions is because detection has been improved. If you limited your search to earthquakes over four on the Richter scale, the point where minor damage may begin, you will probably not find a noticeable increase.You mean like 2,700+ earthquakes in Oklahoma since 2010, when before 2009 they averaged 1-2 per year?
What you see in Oklahoma is an increase in very low energy earthquakes due to the relief of pressure cause mostly by injection of waste water. Those are not old stresses, but old stresses that are being released. And it is far better to release them in a series of low energy quakes rather than in one large one.
Last edited: