by FlipMode » April 8th, 2011, 7:24 am
HAARP is the High Frequency Active Auroral Research Program. In basic terms, it shoots signals into the ionosphere (which is one of the spherical layers that surrounds Earth and allows Radio Transmissions like GPS). It was designed to test the effect of signals within the ionosphere to improve GPS and such stuff.
Anyway, there is no proof that it was involved (though none to say it was not). But it is worth remembering, Japan is among the most common places for Earthquakes, because it is positioned right a top of tectonic plates, they get quakes every few days and this just happened to be one of the bigger ones.