=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Kashiwazaki         647/081 RLR(1972) is 11.2m below BM Attach-17
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 17-Nov-2009
The relevant authority for this station is the Geographical Survey Institute. For some reason the data for 1998 was not downloaded from this authority. Data downloaded and entered 17.11.09.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 23-Feb-2011
Buddy checked with Toyama. Profiles compare very well.
=========================== 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 triggering a tsunami with waves up to 40.5m travelling up to 10km inland.
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 13-Mar-2014
The GPS benchmark information has been downloaded from the SONEL website. GPS benchmark is P110 13.491m above RLR.