=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Matsuyama II        644/032 RLR(1972) is 9.7m below Attached BM
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Matsuyama II        644/032 RLR(1972) is 9.7m below Attached BM
=========================== 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 triggered an
tsunami with waves up to 40.5m and travelling up to 10 km inland.