Kanton-B (Kiribati) Site History

History Summary

Station Kanton-B
Country Republic of Kiribati
Latitude 02° 48.6' S
Longitude 171° 43.1' W
GLOSS No 145
Time Reference GMT (hours 00-23)
Contributor UH Sea Level Center
Instrument type (May 1972 - Feb 1975) Unconfirmed
(Feb 1975 - Feb 1986) Fischer and Porter Analog-to-Digital Recorder (ADR)
(Feb 1986-present) Leupold and Stevens Analog-to-Digital Recorder (ADR)
(Feb 1982-present) Handar Encoder
Primary Gauge ADR: 1975-90
ENC: 1991-
Site of guage  
Observational periods 1972 - present

Reference Level

All heights have been referred to the station tide staff zero which is linked to fixed benchmarks.

Benchmarks

UH-1
(TGBM)
SS hex head bolt, no stamp, set in epoxy on left side of front step to bldg. 138 (established 13 December 1977)
BM11
(Auxilliary)
Standard disk,unstamped, set in top of concrete sea wall at north end of main shipdock and on NW side of entrance to wooden finger pier and level with the dock area (established 1961)
BM12
(Auxilliary)
Drill hole with 'BM 1962' inscribed in concrete (not legible 1990) located in top centre of sea wall. It is 24ft NE of SW corner of sea wall, 44ft SW of W corner of pump house near tide station.
UH-2
(Auxilliary)
Square SS plate set in white epoxy, no marking, near BM 12, set about 2ft in from edge of sea wall and 3ft E of BM 12.
SW2
(Auxilliary)
0.25 inch SS bolt head, located on top of the 3 inch black ABS end cap used for witch switch. The switch is mounted on the side of the new tide staff support pole. UH-2 and SW2 established 21 March 1990.

Quality Assesment by the UH Sea Level Center

Comment

The daily and monthly means reveal no apparent changes in the reference level and agree well with Christmas Island.

Year CI (%) Missing Data Replaced Gaps or Bad Data Questionabe Fluctuations
1973 97 121-132 none 294-295,327-329
1974 100 none none 275-277
1975 99 137-142 none none
1976 100 none none none
1977 99 316-318 none none
1978 98 111-114,166-169 none none
1979 96 95-96,227-284,299-304 none 61-63,249-251,276-277
1980 62 17-23,232-366 none none
1981 29 1-79,183-365 none none
1982 67 1-14,122-152,183-257 none none
1983 78 48-59,119-153,213-245 none none
1984 100 none none 49,104-105
1985 87 14-62 none none
1986 100 none none none
1987 100 none none none
1988 100 none none none
1989 100 none none none
1990 100 none none none
1991 100 none none none
1992 99 236-238 none none
1993 100 none none none
1994 99 74-76 (00)065-(12)065 none
1995 100 none none none
1996 100 none none none
1997 100 none none none
1998 100 none (00)049-(22)049 none