Amsterdam Island Site History
History Summary
| Station Name | Amsterdam Island |
|---|---|
| Time Reference | GMT (00-23 Hours) |
| Units | dbars |
| Sample Interval | Hourly |
| Contributors | 1984 - 1988 Proudman Oceanographic Laboratory, Joseph Proudman Building, Liverpool. U.K. 1991 - 1994 University of Grenoble, FRANCE. |
| Instrument Type | 1984 - 1985 Strain gauge pressure sensor with temperature recorded. 1986 - 1988 Paroscientific Digiquartz pressure transducer with temperature recorded. 1991 - 1994 Bottom mounted pressure sensor. |
Site Locations
| Observational Period | Latitude | Longitude | Depth(m) |
|---|---|---|---|
| 26Jul1984 - 15Feb1985 | 37° 54.10' S | 077° 34.16' E | 310 |
| 20Mar1986 - 22Dec1986 | 37° 54.10' S | 077° 37.16' E | 178 |
| 20Mar1986 - 21Dec1987 (Vassie et al. deep water site) | 37° 54.00' S | 077° 35.00' E | 470 |
| 23Dec1986 - 21Dec1987 | 37° 54.10' S | 077° 37.16' E | 165 |
| 22Dec1987 - 19Dec1988 | 37° 54.10' S | 077° 37.16' E | 180 |
| 23Dec1987 - 19Dec1988 (Vassie et al. deep water site) | 37° 54.00' S | 077° 35.00' E | 460 |
| 11May1991 - 31Jan1992 | 37° 54.26' S | 077° 34.83' E | 350 |
| 01May1992 - 11Jul1993 | 37° 53.00' S | 077° 35.00' E | 350 |
| 11Jul1993 - 23Oct1994 | 37° 54.20' S | 077° 34.72' E | 350 |
Datum of the pressure measurements is not maintained from one deployment to the next and the depths given are approximate. (Reference: Vassie et al., Journal of Geophysical Research, 99(C1), 937-949).
Quality Assessment
Mean and long-term drift has been removed from the data for the deployments 1984-1988, however no attempt has been made to remove possible drift for deployments 1991-1994.
| Period | Comments |
|---|---|
| Jul 1984- Feb 1985 | The time series is essentially flat over most of its length, but with a drop of approx. 20 mbars between day nos 210 and 240 (August 1984). It is believed that the rapid fall is an instrumental effect of the strain gauge. (see Vassie et al.) |
| Mar 1986- Dec 1986 | None |
| Dec 1986- Dec 1987 | Marked data (039-041) Feb 8-10, (043) Feb 12 |
| Dec 1987- Dec 1988 | None |
| May 1991- Jan 1992 | None |
| May 1992- Jul 1993 | None |
| Jul 1993- Oct 1994 | None |
Deep Water Sites (see Vassie et al.)
| Period | Comments |
| Mar 1986 - Dec1987 | None |
| Dec 1987 - Dec 1988 | None |
