Instrument Description
CTD Unit and Auxiliary Sensors
Two CTD packages were used during RRS James Cook cruise 31 (JC031). The first CTD package (stations 1-12) comprised a Sea-Bird 911 plus CTD system, auxiliary sensors and Sea-Bird SBE 32, 24-way carousel fitted to a stainless steel frame with fin. During it's recovery at station 12 (08/02/2009), the package was pulled into the hydroboom block resulting in the total loss of the CTD package over the side. Consequently, the entire package was replaced (see below). A full description of the package is as follows:
| Instrument/Sensor | Serial Number | Manufacturer's
Calibration Date |
Comments |
|---|---|---|---|
| Sea-Bird SBE 9 plus underwater unit (aluminium) | 09P-24680-0636 | ||
| Sea-Bird SBE 11 plus deck unit | 11P-34173-0676 | ||
| Sea-Bird SBE 3P temperature sensor (aluminium) | 03P-4301 | 4-Apr-08 | primary (frame-mounted) |
| Sea-Bird SBE 4C conductivity sensor (titanium) | 04C-3153(T) | 22-Apr-08 | primary (frame-mounted) |
| Sea-Bird SBE 3P temperature sensor (aluminium) | 03P-4490 | 4-Apr-08 | secondary (fin-mounted) |
| Sea-Bird SBE 4C conductivity sensor (titanium) | 04C-3153(T) | 22-Apr-08 | secondary (fin-mounted) |
| Digiquartz temperature compensated pressure sensor | 83008 | 10-Sep-08 | |
| Sea-Bird SBE 32 24-way carousel | 32-45661-0621 | ||
| 20L OTE external spring water samplers | rosette positions 1-24 | ||
| Sea-Bird SBE 43 dissolved oxygen sensor (titanium) | 43-1196 | 3-Oct-08 | |
| Chelsea MKIII Aquatracka fluorometer (titanium) | 88108 | 9-Jan-08 | configured for chl- a |
| Chelsea MKII Alphatracka transmissometer (titanium) | 161045 | 8-Sep-05 | 660nm, 25cm path |
| Wetlabs BBRTD backscatter sensor (titanium) | 115R | 13-May-08 | 660nm |
| PML 2-pi PAR sensor (upwelling) | 9 | 21-Jun-08 | only fitted on casts <600m in daylight hours |
| PML 2-pi PAR sensor (downwelling) | 10 | 14-Apr-08 | only fitted on casts <600m in daylight hours |
| RDI Workhorse Monitor 300kHz ADCP (titanium) | 10629 | downward-looking master configuration | |
| Benthos PSA-916T 200kHz altimeter (titanium) | 1040 | Mar-03 | |
| NMF 10kHz pinger | B5 | ||
| Sea-Bird SBE 5T submersible pump (titanium) | 05T-4166 | primary | |
| Sea-Bird SBE 5T submersible pump (titanium) | 05T-2793 | secondary (fin-mounted) |
The replacement CTD package (stations 13-84) also comprised a Sea-Bird 911 plus CTD system, auxiliary sensors and Sea-Bird SBE 32, 24-way carousel fitted to a stainless steel frame with fin. The LADCP (s/n 4275) was damaged during the deployment of station 35 and was replaced prior to station 36. A full description of this package is as follows:
| Instrument/Sensor | Serial Number | Manufacturer's
Calibration Date |
Comments |
|---|---|---|---|
| Sea-Bird SBE 9 plus underwater unit (titanium) | 09P-24680-0637(T) | ||
| Sea-Bird SBE 11 plus deck unit (titanium) | 11P-34173-0676 | ||
| Sea-Bird SBE 3P temperature sensor (titanium) | 03P-4592(T) | 28-May-08 | primary (frame-mounted) |
| Sea-Bird SBE 4C conductivity sensor (titanium) | 04C-3272(T) | 13-Jun-08 | primary (frame-mounted) |
| Sea-Bird SBE 3P temperature sensor (aluminium) | 03P-4782 | 17-Jun-08 | secondary (fin-mounted) |
| Sea-Bird SBE 4C conductivity sensor (aluminium) | 04C-3258 | 6-Jun-08 | secondary (fin-mounted) |
| Digiquartz temperature compensated pressure sensor (titanium) | 79501 | 22-Sep-08 | |
| Sea-Bird SBE 32, 24-way carousel | 32-19817-0243 | ||
| 20L OTE external spring water samplers | rosette positions 21-24 | ||
| 10L OTE external spring water samplers | rosette positions 1-20 | ||
| Sea-Bird SBE 43 dissolved oxygen sensor (titanium) | 43-0619 | 11-Nov-08 | |
| Chelsea MKIII Aquatracka fluorometer (titanium) | 88244 | 10-Jun-08 | configured for chl- a |
| Chelsea MKII Alphatracka transmissometer (titanium) | 07-6075-001 | 18-Oct-07 | 660nm, 25cm path |
| Wetlabs BBRTD backscatter sensor (titanium) | 182 | 20-Jun-07 | 660nm |
| PML 2-pi PAR upwelling sensor | 9 | 21-Jun-08 | only used on casts <600m and in daylight |
| PML 2-pi PAR downwelling sensor | 10 | 14-Apr-08 | only used on casts <600m and in daylight |
| RDI Workhorse Monitor 300kHz LADCP (aluminium) | 4275 | downward-looking master configuration (stations 13-35) | |
| RDI Workhorse Monitor 300kHz LADCP (titanium) | 10607 | downward-looking master configuration (stations 36-84) | |
| Benthos PSA-916T 200kHz altimeter (titanium) | 41302 | 26-Apr-07 | |
| Sea-Bird SBE 5T submersible pump (titanium) | 05T-3002 | primary | |
| Sea-Bird SBE 5T submersible pump (titanium) | 05T-4513 | secondary (fin-mounted) |
