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 | 785/001 |
| 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 |
Related BODC pages
| Sea level portal | World Ocean Circulation Experiment (WOCE) — Sea level | |
| UK Tide Gauge Network | Climate Variability and Predictability (CLIVAR) | |
| GLOSS project page |
Related external links
| Global Sea Level Observing System (GLOSS) | Permanent Service for Mean Sea Level (PSMSL) | |
| University of Hawai`i Sea Level Centre (UHSLC) | World Ocean Circulation Experiment (WOCE) |
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