Hamada (Japan) Site History

History Summary

Station name Hamada
Country Japan
Latitude 34° 54.0' N
Longitude 132° 04.0' E
GLOSS No. 326
Contributor Japan Meteorological Agency
Instrument Type Fuess float operated gauge (2001-2005)
Acoustic gauge (2006-2009)
Observational Periods Gauge operational: 1984 - present
Data available: 2001 - 2009

Benchmarks

Reference Level

All heights have been referred to the station Tide Gauge Zero (TGZ) which is linked to fixed bench marks.

Tide Gauge Benchmark (TGBM) Description

Japan Meteorlogical Agency Benchmark bolt inside tide gauge hut, adjacent to stilling well

Benchmark Relationships

Year Standard Mark (TGBM)
above Datum Line (TGZ)
Standard Mark (TGBM)
above Tokyo Peil (TP)
TGZ below TP
2001-2002 3.242 2.342 -0.900
2003-2009 3.242 2.325 -0.917

Parameter Code

ASLVZZ01 - The elevation of the sea surface to a known datum, measured in metres.

Quality Assessment

The daily or monthly means do not reveal any obvious reference level shifts. Data spikes of about 10cm or less have not been corrected.

Completeness index (CI)

Sea level data from Japan is processed for each year. Occasionally data is missing from the data sets, either because the data set does not cover the whole year or because data has been flagged null. The number of cycles in a year with no missing data is calculated (based on the sample interval and whether a leap year). The completeness index calculates what proportion of the data expected in a year is present and not flagged null.

Quality index (QI)

During processing cycles considered suspect within a series are flagged M. The quality index calculates what proportion of the data available is not considered suspect.

Yearly overview of data

Year CI (%) QI (%) Start and end date (UTC) Sampling interval
(minutes)
Missing Data
(cycle no.)
Suspect Data
(cycle no.)
Parameter Code
2001 99.9 100.0 2000-12-31 15:00 to 2001-12-31 14:00 60 874-879 None ASLVZZ01
2002 100.0 100.0 2001-12-31 15:00 to 2002-12-31 14:00 60 None None ASLVZZ01
2003 99.9 100.0 2002-12-31 15:00 to 2003-12-31 14:00 60 8051-8056 None ASLVZZ01
2004 100.0 100.0 2003-12-31 15:00 to 2004-12-31 14:00 60 None None ASLVZZ01
2005 100.0 100.0 2004-12-31 15:00 to 2005-12-31 14:00 60 None None ASLVZZ01
2006 99.3 100.0 2005-12-31 15:00 to 2006-12-31 14:00 60 52-110 None ASLVZZ01
2007 100.0 100.0 2006-12-31 15:00 to 2007-12-31 14:00 60 None None ASLVZZ01
2008 99.9 100.0 2007-12-31 15:00 to 2008-12-31 14:00 60 7908-7913 None ASLVZZ01
2009 100.0 100.0 2008-12-31 15:00 to 2009-12-31 14:00 60 None None ASLVZZ01