=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Muroran             641/029 RLR(1987) is 9.6m below Standard Mark
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 29-Aug-1995
A destructive earthquake and tsunami occurred in the Kuril Islands on 4 October 1994 - see Earth System Monitor, 5(4), June 1995.