St Helena (Atlantic Ocean) Phase 1 Site History
History Summary
| Station Name | St Helena Phase 1 |
|---|---|
| Latitude | 15° 58.0' S |
| Longitude | 005° 42.0' W |
| Country | U.K. |
| Gloss No | 264 |
| Time Reference | GMT(00-23 hours) |
| Contributor | Proudman Oceanographic Laboratory, Joseph Proudman Building, 6 Brownlow Street, Liverpool, L3 5DA. U.K. |
| Observation Period | Aug 1986 - Oct 1992 |
| Instrument Type | Digiquartz pressure sensor and barometer transmitting by satellite. |
| Site of Gauge | Jamestown Harbour steps, St Helena. Please Note: These data should not be confused with the St Helena Phase 2 data. There are no links between these two data sets. |
Datum information is not available.
PLEASE NOTE: Datum can drift WITHIN AND BETWEEN files.
Parameters Recorded
| Period | CI(%) | Parameters | Sample Interval |
|---|---|---|---|
| 08 1986 - 11 1987 | 99.4 | AP,SP,SSP | 60 mins |
| 11 1987 - 02 1988 | 100 | SSP | 60 mins |
| 05 1988 - 02 1989 | 99.9 | SP,SSP | 60 mins |
| 02 1989 - 01 1990 | 100 | SSP | 60 mins |
| 02 1990 - 09 1990 | 100 | SSP | 60 mins |
| 09 1990 - 02 1992 | 100 | AP,SSP | 60 mins |
| 02 1992 - 10 1992 | 100 | AP,SP,SSP | 60 mins |
where:
- AP = CAPHSL01 = Atmospheric pressure,
- SP = PRESPS01 = Sea Pressure,
- SSP = PRSTPS01 = Sub Surface (total) Pressure.
Quality Assessment
All data have been tidally analysed and constants and residuals checked. Records have been visually inspected for spikes and timing shifts.
| Period | Parameters | Comments |
|---|---|---|
| 08 1986 - 11 1987 | SP | Gap: (1986) 328-329, (1987) 148-149,244-245 AP Gap: (1986) 328-329, (1987) 148-149,244-245 Questionable Fluctuations: None |
| 11 1987 - 02 1988 | SSP | None |
| 05 1988 - 02 1989 | SP | Gap: (1988) 151 SSP Marked: (1988) 151 Questionable Fluctuations: None |
| 02 1989 - 01 1990 | SSP | None |
| 02 1990 - 09 1990 | SSP | None |
| 09 1990 - 02 1992 | AP | Gap: (1991) 033-036,091-092,344-345 |
| 02 1992 - 10 1992 | All | None |
