James Clarke Ross Cruise AMT13 CTD Instrumentation
The CTD unit was a Sea-Bird Electronics 911 plus system, with dissolved oxygen sensor. The CTD was fitted with a transmissometer, a fluorometer, down and up welling PAR sensors. All instruments were attached to a Sea-Bird SBE 32 carousel. The table below lists more detailed information about the various sensors.
| Sensor | Model | Serial Number | Calibration | Comments |
|---|---|---|---|---|
| Pressure transducer | Digiquartz temperature compensated pressure sensor | 78958 | 17/06/2003 | - |
| Conductivity sensor 1 | SBE 4C | 2571 | 31/07/2003 | - |
| Conductivity sensor 2 | SBE 4C | 2231 | 19/07/2003 | - |
| Temperature sensor 1 | SBE 3P | 4105 | 31/07/2003 | - |
| Temperature sensor 2 | SBE 3P | 2674 | 31/07/2003 | - |
| Dissolved oxygen | SBE 43 | 43B-0013 | 20/03/2001 | Replaced for casts 55 and 56 |
| Transmissometer | Chelsea MkII Alphatracka | 161-2642-03 | 05/09/1996 | 0.25 m path |
| Fluorometer | Chelsea MkIII Aquatracka | 088-242 | 28/04/2001 | - |
| PAR - upwelling | Chelsea PAR sensor | 08 | 20/01/2003 | - |
| PAR - downwelling | Chelsea PAR sensor | 12 | 05/05/1999 | - |
| Light Back-Scatter | Sea Tech LBSS | 400 | n/a | No calibration sheet - only raw voltage provided |
Change of sensors during cruise: The oxygen sensor was replaced with a BAS sensor (s/n 43B-0245 calibration date 27/08/2002) for casts A13_55 and A13_56.
Sampling device
Rosette sampling system equipped with 24 x 20 l sampling bottles (manufactured by Ocean Test Equipment Inc.).
