GLOSS Station Handbook

GLOSS Station Handbook – Cocos Is. (Keeling)

The GLOSS Station Handbook is currently being re-designed and upgraded.

Until a new version is available, the tide gauge station list below from the last version of the Handbook provides links to further details about each tide gauge in the GLOSS Core Network. Click the GLOSS number buttons to view the information. Click column headings to sort the table.


Station information

Gloss number46
Station nameCocos Is. (Keeling)
Time zone097.5E, GMT + 6.5hrs
Latitude (+ve N)-12.7
Longitude (+ve E)96.9
Observation periodsFloat Gauge 1985-1994; Acoustic 1992
Responsible countryAustralia
Authority responsible for tide gaugeNational Tidal Centre, Australia (see GLOSS Contact Points).
GLOSS contactAustralia
Committed to GLOSSYes
Location map
Digital dataYes
Aditional parametersbarometric pressure, water/air temperature, wind speed & direction
Data acquisition rate6 minute interval
Fast delivery data at UHSLCData 171 File format
High frequency data at BODCData 046 Document 77230 Document 57638 Document 58139
High frequency data at UHSLCData 171a Document 171a File format
Real-time data availableYes
Additional parameters (real-time)None
Tide gauge benchmarkPSM 101: brass plaque in concrete at the base of the jetty on Home Is.
Benchmark relationshipsTide Gauge Zero (TGZ) = 2.410m below PMS 101.
TGZ = 0.784m below Home Island Datum (approx. mean sea level)
Auxiliary benchmarksPSM 91: brass plug in concrete wharf (northern wall), Home Island.
Trig R379: An RA Survey brass plaque stamped R379 set in concrete at ground level, situated on the most SW point of Home Island, adjacent to the Clunies Ross Residence.
Data at PSMSL
Annual MSL (RLR) dataRLR 983
Annual MSL (RLR) plot
MSL methodHourly means
PSMSL code983
Other relevant codesNTF port no. 46280, UHSLC 171
Additional information
Other relevant informationFloat/stilling well gauge (1961-1965) located on original jetty West Is.
Float/stilling well gauge (1968-1971) located near jetty, West Is.
Geocentric measurements: Doppler observations 1969 ISTS 040 on West Is.
PSMSL also hold data from another gauge at Cocos Island (Keeling) (PSMSL Code 680/522, 1985-1987).
Nearest Met. stationCocos Island Airport (West Is)
Last updated16 October 2002