=========================== 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. =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 06-Apr-1998 NB the station codes for this country/area do not follow the coast sequentially =========================== FOLLOWING PSMSL DOCUMENTATION ADDED 06-Apr-1998 The data for this station is referred to: Firsov P.B. Katalog of monthly sea level data for Japanese Sea coast in USSR.//Fondi DVNII, 1990. No details are known for the contributing authority or frequency of observations