Actually Lwien, I thought you would know about the California earthquake fellow who says that earthquakes and vulcanism are both related to Lunar tides and Solar alignment. worked high up in the government, prominent geologist.
Most folks said he was nuts, yet he has made some amazingly accurate predictions, such as the Sumatra tidal quake. the San Fran World Series Quake and others. Not on the money, but withing days, and even able to predict where on the Earth's surface it is likely to happen. Not withing miles and not within hours, but close enough that folks are starting to pay him some attention.
I'm not saying for sure the tides affect quakes, but think about grand masses of the tectonic plates, they are floating on a non-solid fluid/plasic mantel, and think about how much force must be exerted to move those Trillions on Trillions of tons of water. I can see where a relation would be possible.
NOsferatu says, "the recent Japan catastrophe happened on a super moon" , yet this is supposed to happen Next Saturday night . . . can't have it both ways... :2c,