Station Information

Station ID: 133
Latitude: 32.428611
Longitude: 131.669444
Coastline code: 645
Station code: 11
Country: JAPAN
Time span of RLR data: 1930 – 2023
RLR completeness (%): 98
Time span of metric data: 1900 – 2023
Metric completeness (%): 98
Link to ellipsoid: Available
Date of last update: 04 Mar 2024

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.

Additional Data Sources (guide to additional data sources)

Nearby GNSS Stations from SONEL: P122
Research Quality Data from UHSLC station 358: hourly and daily

Station Documentation

Link to RLR information.

Documentation - date unknown


Documentation added 1991-06-11

Hosojima 645/011 RLR(1974) is 9.4m below BM Attach-4

Documentation added 2011-02-22

Previously data points for December 1979 - December 1980 had been flagged.However when the station was buddy checked with nearby station Aburatsu this period of the sea level profile shows the same pattern. Flag points were therefore removed. The profiles appear to separeate more during the 1990's onwards.

Documentation added 2012-02-21

A massive earthquake magnitude 9.0 ocurred at 14:46 JST (05:46 UTC) on Friday 11th March 2011 with the epicenter approx. 70km east of the Oshika Peninsula of Tohoku. It was the most powerful known earthquake to hit Japan. The earthquake triggered a tsunami with waves of up to 40.5m travelling up to 10km inland.

Documentation added 2014-03-13

The GPS benchmark information has been downloaded from the SONEL website. GPS benchmark is P122 13.797m above RLR.

Data Authority

Geographical Survey Institute
Kitasato -1
Ibaraki-ken 305