GLOSS Station Handbook

GLOSS Station Handbook – Rarotonga

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 number139
Station nameRarotonga
CountryCook Islands
Time zone150W, GMT - 10hrs
Latitude (+ve N)-21.2
Longitude (+ve E)-159.76666
Observation periodsFloat gauge 1977-; Acoustic gauge 1993-
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 and air temperature, wind speed and direction.
Data acquisition rate6 minute intervals
Fast delivery data at UHSLCData 023 File format
High frequency data at BODCData 139 Document 77230 Document 57345
High frequency data at UHSLCData 023a Data 023b Document 023a Document 023b File format
Real-time data availableYes
Real-time data transmitted to GLOSS Fast Centre
Additional parameters (real-time)None
Tide gauge benchmarkCT/1: triangular stamp (steel pin) with '1' at centre of concrete emplacement; located across street from tide house in parking area of courtyard of govt house near flagpole. Fixed within island wide survey.
Auxiliary benchmarksUH-1: SS pin in concrete emplaced about 10ft W of tide staff at edge of quay, about 2ft from water on cement slab, which seems to be sinking.
UH-2: 1 inch SS disc, no stamp, emplaced in concrete about 10ft E of tide staff on finger pier. Not locatable in Feb. 1992 - destroyed.
UH-4: 1 inch square SS on top of pin set in white epoxy in cement, located near the closest corner of bldg to right, facing away from sea.
Data at PSMSL
Annual MSL (RLR) dataRLR 1843 RLR 1453
Annual MSL (RLR) plot
MSL methodHourly means
PSMSL code1843
Other relevant codesNTF port no. 65980, UHSLC 023
Additional information
Other relevant informationBackup gauges on site: 1) Leupold Stevens ADR (December 1984-)
2) Handar encoder ADR (December 1984-)
Daily values calculated using 119-point convolution filter (Bloomfield, 1976) centred on noon applied to the hourly data with respective periods of the 95, 50 and 5% amplitude points at 124.0, 60.2 and 40.2 hours.
Last updated16 October 2002