Data



Data Notes



Extracted from Database

09 Sep 2019

OGI

Station Information

Station ID: 1344
Latitude: 37.814722
Longitude: 138.281111
Coastline code: 647
Station code: 86
Country: JAPAN
Time span of data: 1973 – 2018
Completeness (%): 96
Link to ellipsoid: Available
Date of last update: 12 Feb 2019

Green Arrow: Current Station
Yellow Marker: Neighbouring RLR Station
Red Marker: Neighbouring Metric Station

Please note: In many cases, the station position in our database is accurate to only one minute. Thus, the tide gauge may not appear to be on the coast.

Tide Gauge Data

Plot of monthly mean sea level data at OGI.

Link to larger image of monthly data plot.
Download monthly mean sea level data.

Plot of annual mean sea level data at OGI.

Link to larger image of annual data plot.
Download annual mean sea level data.

Download metric sea level data. Use only with extreme caution.
NOTE: If some of the data are red in the plots above, the 'flag for attention' is set. Please see the documentation below.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: P109

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Ogi 647/086 RLR(1975) is 9.3m below BM Attach-29

Documentation added 1996-11-15

January 1995 - new station

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 situated approx. 70km east of the Oshika Peninsula of Tohoku. The earthquake was the largest ever ti strike Japan and triggered a tsunami with waves of up to 40.5m and travelling inland up to 10km.

The datum was lowered in 1986 by 3mm. On the original diagram this was not applied to the RLR factor.

Documentation added 2014-03-13

The GPS benchmark information has been downloaded from the SONEL website. GPS benchmark P109 is 13.618m above RLR.

Data Authority

Geographical Survey Institute
Kitasato -1
Tsukuba-shi
Ibaraki-ken 305