Tristan da Cunha - A Site History
|Station Name||Tristan - A|
|Time Reference||GMT (00-23 Hours)|
|Contributors||Proudman Oceanographic Laboratory,
Joseph Proudman Building,
|Instrument Type||Paroscientific Digiquartz pressure transducer with temperature recorded.|
|06Nov1985 - 03Oct1986||35° 31.00' S||011° 02.00' W||4080|
|04Oct1986 - 26Sep1987||35° 31.00' S||011° 02.00' W||4082|
|27Sep1987 - 08Oct1988||35° 32.00' S||011° 00.00' W||4090|
These data form part of the 'Tristan Triangle Experiment' around Tristan da Cunha which consisted of a series of Bottom Pressure Recorder measurements made in a 'triangle' (sites A, B and C) around the island between 1985-88. (Spencer et al.)
Bottom pressure at all three sites was found to be coherent. (Hughes and Smithson (1996))
Mean and Long-term drift has been removed from the data. Depths given are approximate.
|Nov 1985 -Oct 1986||Pressure channels 1 and 2 appear to be the most accurate.
Pressure channel 3 marked: 1986 104-112
|Oct 1986 - Sep 1987||Contributors recommend use of pressure channel 2.
Pressure channel 3 marked: 1986 277-280
|Sep 1987 - Oct 1988||All pressure channels are fine.|
Spencer, R. et al.
The ACCLAIM programme in the South Atlantic and Southern Oceans. International Hydrographic Review, 70, 7-21.
Hughes, C.W. and Smithson, M.J. 1996.
Bottom pressure correlations in the South Atlantic. Geophysical Research Letters, 23(17), 2243-2246.