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