Christmas Island (Australia) Site History
|Contributor||1986-1987: TOGA Sea Level Center
1990-1991: Flinders University of South Australia
|Instrument Type||Float and stilling well gauge,
Leupold and Stevens Analog-to-Digital Recorder
|Site of Gauge||The gauge is situated near the north arm cantilever, which is north west of bench mark CHS 2.|
|Observational periods||September 1986-March 1988, August 1990-present|
Tide Gauge Benchmark (TGBM) Description
|CHS 1||The circular brass plaque, numbered CHS1, is set in the bedrock between the two cantilever loaders at Flying Fish Cove.|
|CHS 2||The circular brass plaque, numbered CHS 2, is set in a concrete pad at the root of the North Arm Cantilever jetty.|
|CHS 3||The circular brass plaque, numbered CHS 3, is set on top of a concrete pad support for South Arm Cantilever conveyor. Rocky Point RM 3.|
Datum of data is tide gauge zero.
Tide Gauge Zero (TGZ) = 6.158m below CHS 1 (1986-1988).
The daily and monthly means reveal no apparent reference level changes or trends. However, comparisons with Cocos Island suggest a reference level shift of about +10 cm for July - October, 1987.
|Year||CI(%)||QI(%)||Missing Data||Replaced Gaps or Bad Data||Questionable Fluctuations|