GLOSS Station Handbook
Station information sheet
General | |
GLOSS number | 297 |
Station name | Zanzibar |
Country | Tanzania |
Time zone | 045E, GMT + 3hrs |
Latitude (+ve N) | -6.15 |
Longitude (+ve E) | 39.18333 |
Ocean | Indian |
Observation period(s) | 1950s Munro, 1984- |
Responsible country | Tanzania |
Authority responsible for tide gauge | Zanzibar Department of Surveys and Urban Planning, Commission of Lands and Environment, P.O. Box 811, Zanzibar, Tanzania |
GLOSS contact | Tanzania |
Committed to GLOSS | Yes |
Operational | Yes |
Location map | |
Instrumentation | |
Float | Yes |
Pressure | No |
Bubbler | No |
Acoustic | No |
Radar | No |
Data | |
Digital data | Yes |
Data acquisition rate | Recording at 10 minute intervals, filtered to hourly heights. |
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 | |
Benchmarks | |
Tide gauge benchmarks | Old TGBM - about 30.0m from tide gauge (521209E, 9319992N) |
Benchmark relationships | BMI at Malindi roundabout = 3.80m above Land Survey Datum (1984, 1987) Mean Sea Level is 2.08m above Chart Datum |
Auxiliary benchmarks | TGBM 1 is 3.709m above LSD TGBM 2 is 3.750m above LSD TGBM 3 is 3.925m above LSD |
Data at PSMSL | |
Annual MSL (RLR) data | |
Annual MSL (RLR) plot | |
MSL method | average of daily values |
PSMSL code | 1600 |
Other relevant codes | UHSLC 151 |
Additional information | |
Other relevant information | Gauge re-located in Zanzibar Harbour during 1990. 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 | 1992-09-26 |