Roger....Hmmm doesn't look like there is any significant peak now. So, one can probably conclude that M5+ quakes do not significantly trigger other quakes at distances of 500 to 5000 km. And, that my casual observation that M6 quakes were occuring on the same day may not have been anything real (that I was folling myself, which is easy to do). Maybe we should start a discussion of where we are as far as FFAs, solar triggering, etc. Or, whether anyone has any new ideas on earthquakes triggering that need testing.
I need to re-read parts of Lowell's thesis, but I don't have time or motivation or something right now....Chris