Data and Station Information for MERA

Station Information

Station ID:	359
Latitude:	34.918889
Longitude:	139.825
GLOSS ID:	86
Coastline code:	642
Station code:	61
Country:	JAPAN
Time span of data:	1931 – 2024
Completeness (%):	96
Link to ellipsoid:	Available
Date of last update:	21 Mar 2025

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 MERA.

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

Plot of annual mean sea level data at MERA.

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: P206
Nearby Real Time Stations from VLIZ: mera
Fast Delivery Data from UHSLC station 352: hourly and daily
Research Quality Data from UHSLC station 352: hourly and daily

Station Documentation

Link to RLR information.

Documentation added 1991-06-11

Mera 642/061 RLR(1976) is 11.2m below Attached BM

Documentation added 1993-07-12

Several apparent datum problems in the 1950s and 1960s

Documentation added 2011-02-22

By buddy checking the data for Mera against that for Aburatsubo and adding the residuals there does seem to be datum problems during the late 40's through to the mid 60's.

Documentation added 2012-02-21

A massive earthquake of magnitude 9.0 occurred 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 generating a tsunami with waves 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 P206 is 16.204m above RLR.

Data Authority

Japan Meteorological Agency
3-6-9 Toranomon, Minato City
Tokyo

Data

Data Notes

Extracted from Database

MERA