Nearby GNSS Stations from SONEL: P204
Nearby Real Time Stations from VLIZ: hako
Fast Delivery Data from UHSLC station 364: hourly and daily
Research Quality Data from UHSLC station 364: hourly and daily
Hakodate I 641/031 RLR(1972) is 9.0m below Attached BM
Documentation added 1995-08-29
A destructive earthquake and tsunami occurred in the Kuril Islands on 4 October 1994 - see Earth System Monitor, 5(4), June 1995.
Documentation added 2003-11-20
Datum 1998 is 1.434m below Tokyo Peil.
Documentation added 2012-02-21
A massive earthquake magnitude 9.0 occurred at 14.46 JST (05.46 UTC) on Friday 11th March 2011 with the epicentre approx. 70 km 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 and travelling up to 10km inland.
Documentation added 2014-03-13
The GPS benchmark information has been downloaded from SONEL website. GPS benchmark P204 is 12.141m above RLR.
Marine Department Japan Meteorological Agency Ote-machi, Chiyoda-ku Tokyo