GLOSS Station Handbook

Station information sheet

GLOSS number86
Station name


Time zone135E, GMT + 9 hrs
Latitude (+ve N)34.55
Longitude (+ve E)139.49
Observation period(s)1930-1947, 1949-1966, 1968-, acoustic since 2006
Responsible countryJapan
Authority responsible
for tide gauge
Oceanographical Division, Climate and Marine Department, Japan Met. Agency, 3-4, Otemachi- 1, Chiyoda-ku, Tokyo 100, Japan
GLOSS contactJapan
Committed to GLOSSYes
Location mapView location map for GLOSS station Mera
Digital dataYes
Additional parametersSea temperature
Data acquisition rateContinuous recording
Fast delivery data at UHSLCDownload h352.dat from UHSLC   Format documentation for UHSLC data
High frequency data at BODCDownload from BODC   View Mera site history   View BODC document #59788  
High frequency data at UHSLCDownload from UHSLC   Download documentation qa352a.dmt from UHSLC   Format documentation for UHSLC data
Real-time data availableYes
Additional parameters (real-time)Sea temperature
Tide gauge benchmarksJapan Met. Agency Benchmark bolt inside tide gauge hut, adjacent to stilling well
Benchmark relationshipsTide Gauge Zero (TGZ) = 1.337m below Tokyo Peil (Mean Sea Level of Tokyo Bay) TGZ = 6.671m below TGBM (from 1968 onwards)
Auxiliary benchmarksTide station BM 4.236m above Tokyo Peil (1997).
Data at PSMSL 
Annual MSL (RLR) dataDownload annual MSL (RLR) data for Mera
Annual MSL (RLR) plotView annual MSL (RLR) plot for Mera
MSL methodMean of hourly values
PSMSL code359
Other relevant codesUHSLC 352
Additional information 
Other relevant informationThe TGBM is on top of the stilling well. Another benchmark is near the station which is used to decide the height of the TGBM and monitor the height of the tide station. This second benchmark is levelled in to the nearest first class benchmark which is part of the network operated by the Geographical Survey Institute, Ministry of Construction. Heights of benchmarks are described as above Tokyo Peil (TP).
Nearest Met. stationTateyama
Last updated1997-11-20

Related BODC pages

Sea level portal      World Ocean Circulation Experiment (WOCE) — Sea  level
UK Tide Gauge Network     Climate Variability and Predictability (CLIVAR)
GLOSS project page  


Related external links

Global Sea Level Observing System (GLOSS)     Permanent Service for Mean Sea Level (PSMSL)
University of Hawai`i Sea Level Centre (UHSLC)  World Ocean Circulation Experiment (WOCE)


Permanent Service for Mean Sea Level (PSMSL) Global Sea Level Observing System (GLOSS) Station Handbook Intergovernmental Oceanographic Commission (IOC)