The Global Sea Level Observing System

GLOSS Station Handbook

Station information sheet

General
GLOSS number	46
Station name	Cocos Is. (Keeling)
Country	Australia
Time zone	097.5E, GMT + 6.5hrs
Latitude (+ve N)	-12.7
Longitude (+ve E)	96.9
Ocean	Indian
Observation period(s)	Float Gauge 1985-1994; Acoustic 1992
Responsible country	Australia
Authority responsible for tide gauge	National Tidal Centre, Australia (see GLOSS Contact Points).
GLOSS contact	Australia
Committed to GLOSS	Yes
Operational	Yes
Location map
Instrumentation
Float	Yes
Pressure	No
Bubbler	No
Acoustic	Yes
Radar	No
Data
Digital data	Yes
Additional parameters	barometric pressure, water/air temperature, wind speed & direction
Data acquisition rate	6 minute interval
Fast delivery data at UHSLC
High frequency data at BODC
High frequency data at UHSLC
Real-time data available	Yes
Additional parameters (real-time)	barometric pressure, water/air temperature, wind speed & direction
Benchmarks
Tide gauge benchmarks	PSM 101: brass plaque in concrete at the base of the jetty on Home Is.
Benchmark relationships	Tide Gauge Zero (TGZ) = 2.410m below PMS 101. TGZ = 0.784m below Home Island Datum (approx. mean sea level)
Auxiliary benchmarks	PSM 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) data
Annual MSL (RLR) plot
MSL method	Hourly means
PSMSL code	680/521
Other relevant codes	NTF port no. 46280, UHSLC 171
Additional information
Other relevant information	Float/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. station	Cocos Island Airport (West Is)
Last updated	2002-10-16

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