[DocRock]

Major increase in earthquake activity today. Japan hit with big quake and just now a 7 hit just off Costa Rica

Dutchsinse

[TXnMA]

I only see a 5.8 off Japan, whch is not too unusual, and which was masked on the seismographs by the 7.3 on the Iran-Iraq border and the 6.5 in Costa Rica.

Take a look: the MAJO (Matsushiro) seismogram in Japan is pretty well swamped by those bigger shocks...