Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Christmas-A (Line Islands, Kiribati) Site History

History Summary

Station Christmas-A
Country Republic of Kiribati
Latitude 01° 59.1' N
Longitude 157° 28.6' W
GLOSS No 146
Time Reference GMT (hours 00-23)
Contributor Scripps Institute of Oceanography
Instrument Type Unconfirmed
Site of Gauge  
Observational periods 1955 - 1972

Reference Level

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


Benchmark Description
1.25 inch SS disk with 'UH 1 1979' scribed into the concrete base of tide house support,in the SW corner, 1ft from edge (established 10 October 1979).
The brass disk stamped 'Benchmark-USGS NO 8', in the SE corner of the mechanical shop is set in cement foundation 100 yd west of tide house (est. 1959).
The brass disk stamped 'Benchmark-USGS NO 17' is located at entrance of the public works carpenter shop office (established 1959).
1 inch square SS pin set in green epoxy, incised 'XD 90' is located at boat shed, on the right hand side of the door (established 30 October 1990).
1 inch square SS pin set in green epoxy, incised 'XB 90', is located at Public Works workshop, in the southern corner, on the right hand side of the entry, 2ft from the edge of the building (established 30 October 1990).

Quality Assessment by UH Sea Level Centre


The daily and monthly means reveal no apparent changes in the reference level and agree with Kanton. This series is distinguished from Christmas-B because the data have not been linked to a common datum.

Year CI(%) Missing Data Replaced Gaps or Bad Data Questionable Fluctuations
1955 8 none none none
1956 88 185-228 none none
1957 100 none none none
1958 100 none none none
1959 89 289-330 none none
1960 100 none none none
1961 100 none none none
1962 100 none none none
1963 100 none none none
1964 0 1-366 none none
1965 50 1-182 none none
1966 100 none none none
1967 100 none none none
1968 100 none none none
1969 100 none none none
1970 100 none none none
1971 100 none none none
1972 25 none none none