We just (20mn ago) suffered from another strong aftershock (of the initial March 11th earthquake) in Japan.
I have some questions related to seismic science.
Why is there so much time between the initial quake and the following strong aftershocks (initial was March 11, the stronger aftershock happened 20mn ago, April 7)?
Why does it seem that progress in seismic science (and quakes predictions) is so poor? It seems people have only raw probabilities, based on historical data.
Would anybody have any graphical / imagery data of the physical fault move on March 11?