Kushiro (Japan) Site History

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History Summary

Station name	Kushiro
Country	Japan
Latitude	42° 58.0' N
Longitude	144° 23.0' E
GLOSS No.	089
Contributor	1963-1986 TOGA Sea Level Center 1987-2009 Japan Meteorological Agency
Instrument Type	FUESS (1963-1972) LFT-4 (1973-1999) Fuess float operated gauge (2001-2005) Acoustic gauge (2006-2009)
Site of Gauge
Observational Periods	1963 - 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 Benchmark 2.4432m above Tokyo Peil (TP) (1981).

Benchmark Relationships

Year	Standard Mark (TGBM) above Datum Line (TGZ)	Standard Mark (TGBM) above Tokyo Peil (TP)	TGZ below TP
1983 - 2000	3.978	2.455	-1.533
2001-2002	3.978	2.391	-1.587
2003-2004	3.978	2.083	-1.895
2005	3.978	2.070	-1.908
2006-2009	3.978	2.059	-1.919

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
1963	99.9	99.7	1963-01-01 00:00 to 1963-12-31 14:00	60	None	7534-7560	ASLVZZ01
1965	100.0	100.0	1965-01-01 00:00 to 1965-12-31 23:00	60	None	None	ASLVZZ01
1966	100.0	99.6	1966-01-01 00:00 to 1966-12-31 23:00	60	None	7170-7207	ASLVZZ01
1967	100.0	100.0	1967-01-01 00:00 to 1967-12-31 23:00	60	None	None	ASLVZZ01
1968	98.7	100.0	1968-01-01 00:00 to 1968-12-31 23:00	60	34-147	None	ASLVZZ01
1969	99.7	100.0	1969-01-01 00:00 to 1969-12-31 23:00	60	5160-5185	None	ASLVZZ01
1970	99.7	100.0	1970-01-01 00:00 to 1970-12-31 23:00	60	None	None	ASLVZZ01
1971	99.7	100.0	1971-01-01 00:00 to 1971-12-31 23:00	60	6167-6196	None	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	74.7	100.0	1982-01-01 00:00 to 1982-12-31 23:00	60	5824-8042	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	1986-01-01 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	99.9	100.0	1988-12-31 15:00 to 1989-12-31 14:00	60	3645-3652	None	ASLVZZ01
1990	100.0	100.0	1989-12-31 15:00 to 1990-12-31 14:00	60	None	None	ASLVZZ01
1991	99.8	100.0	1990-12-31 15:00 to 1991-12-31 14:00	60	4988-5001	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	99.0	1995-12-31 15:00 to 1996-12-31 14:00	60	None	1844-1869, 1956-1980, 3119-3153	ASLVZZ01
1997	100.0	98.6	1996-12-31 15:00 to 1997-12-31 14:00	60	None	35-81, 7567-7581, 7909-7941, 7983-8014	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	100.0	100.0	2002-12-31 15:00 to 2003-12-31 14:00	60	None	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	100.0	100.0	2005-12-31 15:00 to 2006-12-31 14:00	60	None	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	1226-1235	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)
1969	1969-08-13 18:00 to 1969-08-14 00:00
1970	1970-05-30 10:00 to 1970-05-31 00:00 and 1970-08-13 04:00 to 1970-08-14 00:00
1971	1971-09-17 08:00 to 1971-09-17 14:00