[Island Chris]

A lot of this discussion started with a Univ of Colorado Ph.D seismologist, but who probably came from the world of amateur science. He used to post here and was the one who told me about Earthwaves. That seismologist had a lot of "unusual" ideas. But, there was a little bit of physics behind it: fluctuating magnetic fields and rotating fluids exert a force. My physics is/are rusty and I don't know anything about magneto-telluric currents and whether geomagnetic storms can have any affect on them at a depth that matters (in some areas some seismicity is shallow, but would need to get down a couple of km).
Chris