=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 21-Feb-2012
A massive earthquake magnitude 9.0 occurred at 14.46 JST (05.46 UTC) on Friday
11th March 2011 with the epicentre approx. 70km east of the Oshika Peninsula of
Tohoku. It was the most powerful known earthquake to hit Japan and had waves up
to 40.5m travelling up to 10km inland.