Aburatsu (Japan) Site History

JavaScript is disabled in your browser - some features of this site will not work without it [more]

History Summary

Station Name	Aburatsu
Country	Japan
Latitude	31° 34.0' N
Longitude	131° 25.0' E
GLOSS No.	082
Contributor	1961-1986 TOGA Sea Level Center, 1987-2009 Japan Meteorological Agency.
Instrument Type	FUESS (1961-1972) LFT-4 (1973-1999) Fuess float operated gauge (2001-2005) Acoustic Gauge (2006-2009)
Site of Gauge
Observational Period	1961 - present

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

Auxiliary Benchmarks

Tide station BM 2.8816 m above Tokyo Peil (1985).

Benchmark Relationships

Year	Standard Mark (TGBM) above Datum Line (TGZ)	Standard Mark (TGBM) above Tokyo Peil (TP)	TGZ below TP
1959 onwards	6.643	5.061	-1.582
2001-2002	6.643	5.053	-1.59
2003-2009	6.643	5.234	-1.409

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. In some years gaps in data have been replaced, details can be found in Replaced gaps table below.

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
1961	100.0	96.6	1961-01-01 00:00 to 1961-12-31 23:00	60	None	2212,2382-2679	ASLVZZ01
1962	100.0	100.0	1962-01-01 00:00 to 1962-12-31 23:00	60	None	None	ASLVZZ01
1963	100.0	100.0	1963-01-01 00:00 to 1963-12-31 23:00	60	None	None	ASLVZZ01
1964	100.0	100.0	1964-01-01 00:00 to 1964-12-31 23:00	60	None	None	ASLVZZ01
1965	100.0	100.0	1965-01-01 00:00 to 1965-12-31 23:00	60	None	None	ASLVZZ01
1966	100.0	100.0	1966-01-01 00:00 to 1966-12-31 23:00	60	None	None	ASLVZZ01
1967	100.0	100.0	1967-01-01 00:00 to 1967-12-31 23:00	60	None	None	ASLVZZ01
1968	97.9	92.1	1968-01-01 00:00 to 1968-12-31 23:00	60	3185-3241,5206-5235,5918-5954,6572-6628	5236-5917	ASLVZZ01
1968	93.3	100.0	1969-01-01 00:00 to 1969-12-31 23:00	60	1391-1543,2211-2283,2604-2649,4621-4664,4962-5066,6526-6561,7048-7082,7390-7418, 7700-7762	None	ASLVZZ01
1969	93.3	100.0	1969-01-01 00:00 to 1969-12-31 23:00	60	1391-1543,2211-2283,2604-2649,4621-4664,4962-5066,6526-6561,7048-7082,7390-7418, 7700-7762	None	ASLVZZ01
1970	98.4	100.0	1970-01-01 00:00 to 1970-12-31 23:00	60	22-126,2632-2669	None	ASLVZZ01
1971	100.0	98.6	1971-01-01 00:00 to 1971-12-31 23:00	60	None	7050-7172	ASLVZZ01
1972	100.0	100.0	1972-01-01 00:00 to 1972-12-31 23:00	60	None	None	ASLVZZ01
1973	100.0	100.0	1973-01-01 00:00 to 1973-12-31 23:00	60	None	None	ASLVZZ01
1974	100.0	100.0	1974-01-01 00:00 to 1974-12-31 23:00	60	None	None	ASLVZZ01
1975	100.0	100.0	1975-01-01 00:00 to 1975-12-31 23:00	60	None	None	ASLVZZ01
1976	100.0	100.0	1976-01-01 00:00 to 1976-12-31 23:00	60	None	None	ASLVZZ01
1977	100.0	100.0	1977-01-01 00:00 to 1977-12-31 23:00	60	None	None	ASLVZZ01
1978	100.0	100.0	1978-01-01 00:00 to 1978-12-31 23:00	60	None	None	ASLVZZ01
1979	100.0	100.0	1979-01-01 00:00 to 1979-12-31 23:00	60	None	None	ASLVZZ01
1980	100.0	100.0	1980-01-01 00:00 to 1980-12-31 23:00	60	None	None	ASLVZZ01
1981	100.0	100.0	1981-01-01 00:00 to 1981-12-31 23:00	60	None	None	ASLVZZ01
1982	98.0	100.0	1982-01-01 00:00 to 1982-12-31 23:00	60	2788-2958	None	ASLVZZ01
1983	100.0	100.0	1983-01-01 00:00 to 1983-12-31 23:00	60	None	None	ASLVZZ01
1984	100.0	100.0	1984-01-01 00:00 to 1984-12-31 23:00	60	None	None	ASLVZZ01
1985	100.0	100.0	1985-01-01 00:00 to 1985-12-31 23:00	60	None	None	ASLVZZ01
1986	99.9	100.0	1986-01-01 00:00 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	100.0	1990-12-31 15:00 to 1991-12-31 14:00	60	None	None	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	100.0	100.0	1994-12-31 15:00 to 1995-12-31 14:00	60	None	None	ASLVZZ01
1996	100.0	100.0	1995-12-31 15:00 to 1996-12-31 14:00	60	None	None	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	99.9	100.0	2001-12-31 15:00 to 2002-12-31 14:00	60	7597-7599,7828-7834	None	ASLVZZ01
2003	99.9	100.0	2002-12-31 15:00 to 2003-12-31 14:00	60	6082-6090	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	99.9	100.0	2005-12-31 15:00 to 2006-12-31 14:00	60	8101-8103	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	7763-7767	None	ASLVZZ01
2009	100.0	100.0	2008-12-31 15:00 to 2009-12-31 14:00	60	None	None	ASLVZZ01

Replaced gaps

Year	Replaced Gaps (UTC)
1961	1961-01-13 13:00 to 1961-01-14 02:00, 1961-02-13 16:00 to 1961-02-14 01:00, 1961-02-15 17:00 to 1961-02-16 01:00, 1961-02-16 08:00 to 1961-02-17 04:00, 1961-08-05 14:00 to 1961-08-06 01:00, 1961-10-02 04:00 to 1961-10-03 03:00, 1961-10-19 08:00 to 1961-10-20 02:00, 1961-10-25 10:00 to 1961-10-26 01:00and 1961-11-26 07:00 to 1961-11-27 01:00.
1962	1962-05-16 15:00 to 1962-05-16 22:00.
1963	1963-06-10 10:00 to 1963-06-11 03:00, 1963-07-25 09:00 to 1963-07-25 17:00 and 1963-07-26 10:00 to 1963-07-26 17:00.
1964	1964-03-25 00:00 to 1964-03-25 07:00, 1964-04-01 10:00 to 1964-04-02 02:00, 1964-04-05 03:00 to 1964-04-06 01:00, 1964-06-28 07:00 to 1964-06-29 01:00, 1964-09-05 16:00 to 1964-09-06 01:00, 1964-09-07 17:00 to 1964-09-08 01:00, 1964-09-09 16:00 to 1964-09-10 01:00, 1964-10-14 15:00 to 1964-10-15 01:00, 1964-10-31 19:00 to 1964-11-01 01:00, 1964-11-02 19:00 to 1964-11-03 01:00 and 1964-12-07 02:00 to 1975-12-08 01:00.
1965	1965-04-20 00:00 to 1965-04-20 07:00, 1965-05-10 04:00 to 1965-05-11 01:00, 1965-06-07 07:00 to 1965-06-08 01:00 and 1965-06-09 03:00 to 1965-06-10 01:00.
1968	1968-08-03 15:00 to 1968-08-04 03:00 and 1968-09-24 09:00 to 1968-09-25 03:00.
1969	1969-02-12 09:00 to 1969-02-13 01:00 and 1969-09-05 07:00 to 1969-09-06 01:00.
1978	1978-10-25 10:00 to 1978-10-25 19:00
1980	1980-02-06 15:00 to 1980-02-07 06:00