Nagasaki (Japan) Site History

History Summary

Station name Nagasaki
Latitude 32° 44.0' N
Country Japan
Longitude 129° 52.0' E
GLOSS No. 83
Time Reference GMT (00-23 hours)
Contributor 1964-2009 Japan Meteorological Agency
Instrument type Fuess Float and stilling well gauge 1964-2005
Acoustic Gauge 2006-2009
Site of Gauge  
Observational Period 1964 - present
Reference Level All data are referred to TGZ and linked into historic fixed benchmarks.

Benchmarks

Tide Gauge Benchmark (TGBM) Description

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

Auxiliary Benchmarks

Tide station BM 2.3939m above Tokyo Peil (1991)

Benchmark Relationships

Year Standard Mark (TGBM)
above Datum Line (TGZ)
Standard Mark (TGBM)
above Tokyo Peil (TP)
TGZ below TP
1964-2000 5.500 2.551 -2.949
2001-2002 5.500 2.551 -2.949
2003-2004 5.500 2.734 -2.766
2005-2009 5.500 2.780 -2.720

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. Prior to 2001 most questionable fluctuations are related to timing problems with the gauge. 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
1964 100.0 99.8 1963-12-31 15:00 to 1964-12-31 14:00 60 None 3278,3689 ASLVZZ01
1968 98.8 99.8 1967-12-31 15:00 to 1968-12-31 14:00 60 6793-6900 3786 ASLVZZ01
1969 93.6 99.8 1968-12-31 15:00 to 1969-12-31 14:00 60 2761-2825,3235-3420,5114-5268,5397-5512,5804-5843 6546 ASLVZZ01
1970 99.7 99.8 1969-12-31 15:00 to 1970-12-31 14:00 60 79-107 1321,1359,2903,5423-5425,5935,7554 ASLVZZ01
1971 100.0 99.8 1970-12-31 15:00 to 1971-12-31 14:00 60 None 2815,6048 ASLVZZ01
1972 97.3 99.8 1971-12-31 15:00 to 1972-12-31 14:00 60 2587-2746,6396-6465,7103-7111,7130-7135,8135-8147 2217,5693,8217 ASLVZZ01
1973 99.3 99.8 1972-12-31 15:00 to 1973-12-31 14:00 60 44-107 6553,7944 ASLVZZ01
1974 91.1 100.0 1973-12-31 15:00 to 1974-12-31 14:00 60 1845-2027,3102-3131,3786-4018,5959-6900,7647-7742,8198-8219,8488-8555 None ASLVZZ01
1975 98.3 99.8 1974-12-31 15:00 to 1975-12-31 14:00 60 606-683,910-914,965-1042 5281 ASLVZZ01
1976 100.0 100.0 1975-12-31 15:00 to 1976-12-31 14:00 60 None None ASLVZZ01
1977 98.8 100.0 1976-12-31 15:00 to 1977-12-31 14:00 60 3703-3801,6294-6299 None ASLVZZ01
1978 100.0 100.0 1977-12-31 15:00 to 1978-12-31 14:00 60 None None ASLVZZ01
1979 100.0 100.0 1978-12-31 15:00 to 1979-12-31 14:00 60 None None ASLVZZ01
1980 99.4 100.0 1979-12-31 15:00 to 1980-12-31 14:00 60 5315-5321,6037-6081 None ASLVZZ01
1981 100.0 100.0 1980-12-31 15:00 to 1981-12-31 14:00 60 None None ASLVZZ01
1982 100.0 100.0 1981-12-31 15:00 to 1982-12-31 14:00 60 None None ASLVZZ01
1983 100.0 100.0 1982-12-31 15:00 to 1983-12-31 14:00 60 None None ASLVZZ01
1984 100.0 100.0 1983-12-31 15:00 to 1984-12-31 14:00 60 None None ASLVZZ01
1985 100.0 100.0 1984-12-31 15:00 to 1985-12-31 14:00 60 None None ASLVZZ01
1986 100.0 100.0 1985-12-31 15:00 to 1986-12-31 14:00 60 None None ASLVZZ01
1987 100.0 100.0 1986-12-31 15:00 to 1987-12-31 14:00 60 None None ASLVZZ01
1988 100.0 100.0 1987-12-31 15:00 to 1988-12-31 14:00 60 None None ASLVZZ01
1989 100.0 100.0 1988-12-31 15:00 to 1989-12-31 14:00 60 None None ASLVZZ01
1990 100.0 100.0 1989-12-31 15:00 to 1990-12-31 14:00 60 None None ASLVZZ01
1991 100.0 99.8 1990-12-31 15:00 to 1991-12-31 14:00 60 None 6149-6151,6471-6474 ASLVZZ01
1992 100.0 100.0 1991-12-31 15:00 to 1992-12-31 14:00 60 None None ASLVZZ01
1993 100.0 100.0 1992-12-31 15:00 to 1993-12-31 14:00 60 None None ASLVZZ01
1994 100.0 100.0 1993-12-31 15:00 to 1994-12-31 14:00 60 None None ASLVZZ01
1995 99.9 99.9 1994-12-31 15:00 to 1995-12-31 14:00 60 1981,8270-8273 7455-7468 ASLVZZ01
1996 100.0 99.6 1995-12-31 15:00 to 1996-12-31 14:00 60 None 166-185,1780-1797 ASLVZZ01
1997 100.0 100.0 1996-12-31 15:00 to 1997-12-31 14:00 60 None None ASLVZZ01
1998 100.0 100.0 1998-01-01 00:00 to 1998-12-31 23:00 60 None None ASLVZZ01
1999 100.0 100.0 1999-01-01 00:00 to 1999-12-31 23:00 60 None None ASLVZZ01
2001 100.0 100.0 2000-12-31 15:00 to 2001-12-31 14:00 60 None 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 5029-5031 None ASLVZZ01
2004 99.7 100.0 2003-12-31 15:00 to 2004-12-31 14:00 60 3347-3376 None ASLVZZ01
2005 100.0 100.0 2004-12-31 15:00 to 2005-12-31 14:00 60 None None ASLVZZ01
2006 99.9 100.0 2005-12-31 15:00 to 2006-12-31 14:00 60 8028-8032 None ASLVZZ01
2007 99.9 100.0 2006-12-31 15:00 to 2007-12-31 14:00 60 3947-3953 None ASLVZZ01
2008 99.9 100.0 2007-12-31 15:00 to 2008-12-31 14:00 60 7716-7719 None ASLVZZ01
2009 100.0 100.0 2008-12-31 15:00 to 2009-12-31 14:00 60 None None ASLVZZ01