GLOSS Station Handbook
Station information sheet
General | |
GLOSS number | 139 |
Station name | Rarotonga |
Country | Cook Islands |
Time zone | 150W, GMT - 10hrs |
Latitude (+ve N) | -21.2 |
Longitude (+ve E) | -159.76666 |
Ocean | Pacific |
Observation period(s) | Float gauge 1977-; Acoustic gauge 1993- |
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 and air temperature, wind speed and direction. |
Data acquisition rate | 6 minute intervals |
Fast delivery data at UHSLC | ![]() ![]() |
High frequency data at BODC | ![]() ![]() ![]() |
High frequency data at UHSLC | ![]() ![]() ![]() ![]() ![]() |
Real-time data available | Yes |
Real-time data transmitted to GLOSS Fast Centre | ![]() |
Additional parameters (real-time) | Barometric pressure, water and air temperature, wind speed and direction. |
Benchmarks | |
Tide gauge benchmarks | CT/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 benchmarks | UH-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) data | ![]() ![]() |
Annual MSL (RLR) plot | ![]() ![]() |
MSL method | Hourly means |
PSMSL code | 1843 |
Other relevant codes | NTF port no. 65980, UHSLC 023 |
Additional information | |
Other relevant information | Backup 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 updated | 2002-10-16 |