Position SD2
============

file dps9496.i4d: Use pressures in (b).
(c) is very similar but slightly noisier,(a) should
not be used.

Deployed November 1994 Recovered November 1996                                  
Depth = 1040m   Position = 60 51.01S 54 43.01W                                                  
First sea bed scan is original record 922  = 1                                  
Last sea bed scan is original record 71025 = 70104                               
Time base 139 seconds late  delt= 15.00003256 min                               
(a)          Temperature from QT49187                                           
             Pressure    from QT49187                                           
(b)          Temperature from DQ46251                                           
             Pressure    from DQ46251                                                                                                        
(c)          Temperature from DQ43513                                           
             Pressure    from DQ43513                                                                                               
April '97 Drift and mean removed from pressure channels                                                                                
(b) is the best of the 3 pressure channels                                                                                

Stations in the Scotia Sea and Drake Passage
============================================

POL deployments in this area were first made in a section between the
Falkland Islands and Signy in the South Orkney islands. These stations
have names like 'FS1'. Recording then moved west to two deeper (4000 m)
stations on the western side of the Drake Passage ('ND1' and 'SD1'), and,
most recently, have been on a section between the Falklands and Elephant
Island along the official 'Drake Passage' hydrographic section for the
World Ocean Circulation Experiment ('ND2' and 'SD2' with the stations
including MYRTLE in between).

The nomenclature 'ND1' etc. follows that of

M.Meredith, 1995. On the temporal variability of the transport through
the Drake Passage. University of East Anglia Ph.D thesis. In other
publications, for example:

Woodworth, P.L., Vassie, J.M., Hughes, C.W. and Meredith, M.P. 1996.
A test of the ability of TOPEX/POSEIDON to monitor flows through
the Drake Passage. Journal of Geophysical Research, 101(C5), 11935-11947.

ND1 is referred to as DN92, SD1 as DS92, ND2 as DN93 and SD2 as DS93.

Most instruments were Paroscientific Digiquartz (DQ) pressure transducers
with temperature also recorded. BPR's had typically 3 sensors. Instrumental
drift has attempted to be removed from all records.