Wednesday, November 25, 2015

Double Earthquake in Peru

That was interesting, it was like the double-mint twins of earthquakes in Peru.  Thankfully the two earthquakes that occurred only about 50 km apart were 600 km down in the crust, most likely deformation in the descending plate.

The interesting thing is that these has a couple of characteristics that made them odd.

First they were very large for an Earthquake that deep.  Magnitude 7.6 is a large earthquake, and having a magnitude 7.6 earthquake that deep, although not unheard of, is rare.  Having two earthquakes of the same magnitude five minutes apart is just strange.

Thankfully there was no reported damage or injuries.  Deep quakes have a tendency to be felt over a large area, but do much less damage than an equivalently sized shallow focus earthquake. Even when they occur in pairs separated  by only five minutes.

The final word of all of this?  Well, weirder things have happened.  I just can't think of any off the top of my head.