Here we go again! Put a piece of granite in a testing machine and it screams signals: electric, electromagnetic, and acoustic. Blah! If you have a wrong idea of the physics for the area, none of this will help you in real life. With a chaotic system, you can detect the beat of the butterfly wings, but you never know where it leads.
Like, with NZ, probably that whole basin is starting to sink, but everybody just thinks we have a typical California event series. The same everywhere else. I make my best guess of future activity by looking at the pattern of earthquakes, and trying to figure out the rock mechanics. This is not earthquake prediction, but could be useful.