| General | |
| GLOSS number | 20 |
|---|
| Station name | Marion Is. |
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| Country | South Africa |
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| Time zone | 030E, GMT + 2hrs |
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| Latitude (+ve N) | -46.86666 |
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| Longitude (+ve E) | 37.86666 |
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| Ocean | Indian |
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| Observation period(s) | 1990- |
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| Responsible country | South Africa |
|---|
Authority responsible
for tide gauge | Hydrographer, South African Navy, Private Bag X1, Tokai 7966, South Africa |
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| GLOSS contact | South_Africa |
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| Committed to GLOSS | Yes |
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| Operational | No |
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| Instrumentation | |
| Float | No |
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| Pressure | No |
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| Bubbler | No |
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| Acoustic | Yes |
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| Radar | No |
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| Data | |
| Digital data | Yes |
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| Additional parameters | Sea temperature, air pressure |
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| Data acquisition rate | One minute values, averaged every 10 minutes, filtered to hourly heights |
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| Real-time data available | No |
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| Additional parameters (real-time) | Sea temperature, air pressure |
|---|
| Benchmarks | |
| Tide gauge benchmarks | Trig Survey BM N.R.I.O. 30 adjacent to tide gauge |
|---|
| Benchmark relationships | Tide Gauge Zero (TGZ) = 0.910m below MSL
TGZ = 4.784m below BM N.R.I.O. 30
|
|---|
| Additional information | |
| Other relevant information | Values based on GPS have been observed but not finally calculated. |
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| Nearest Met. station | Marion Island |
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| Last updated | 1990-08-03 |
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