Nearby GNSS Stations from SONEL: P201
Nearby Real Time Stations from VLIZ: waka
Fast Delivery Data from UHSLC station 360: hourly and daily
Research Quality Data from UHSLC station 360: hourly and daily
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 1.507m below Tokyo Peil.
Documentation added 2012-02-22
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. The earhtqake triggered a tsunami with waves of up to 40.5m travelling up to 10km inland. Where more than one benchmark has the same name a suffix has been added
Documentation added 2014-03-13
The GPS benchmark information has been downloaded from the SONEL website. GPS benchmark P201 is 11.706m above RLR.
Marine Department Japan Meteorological Agency Ote-machi, Chiyoda-ku Tokyo