Cruise inventory

RRS Discovery D200

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD200
Cruise period1993-02-06 — 1993-03-18
StatusCompleted
Port of departureCape Town, South Africa
Port of returnCape Town, South Africa
Objectives1. To make direct measurements of the flow of deep and bottom waters passing eastwards from the Enderby Abyssal Plain to the Southern Indian Ocean via deep topographic daps to the northeast and southeast of the Kerguelen Plateau. Specifically, to lay two main arrays of current meters with 10 moorings (42 current meters) and 2 Bottom Pressure Recorders in the main gap between Crozet and Kerguelen, supplemented with a mooring in the deep cleft immediately to the west of Crozet Island, and a further 5 moorings in the Princess Elizabeth Trough between the Kerguelen Plateau and Antarctica.
2. To extend two of the moorings of the main Crozet-Kerguelen array up into the near surface layers to aid the subsequent SWINDEX investigation into the interactions of the Agulhas and Antarctic Circumpolar Currents.
3. To use a range of tracers including the CFCs 10, 11, 12, 113, inorganic nutrients, dissolved oxygen and oxygen and hydrogen isotopes (indicating meltwater content) to partition the deep throughflow into its constituent water masses and to identify these as to source using a widely-spaced set of upstream measurements.
4. To make discrete measurements of CO2 partial pressure in seawater, total seawater CO2 content (TCO2) and appropriate measures of biological activity throughout the cruise-track as a BOFS/PRIME component of the BAS Antarctic Special Topic, and as a necessary determinant of WOCE.
5. To make measurements of biogenic dimethylsulphide (DMS) and its precursor (DMSP) at regular intervals throughout the ship's track, as a component programme of the BAS Antarctic Special Topic.
6. To monitor a suite of discontinuous and continuous environmental variables throughout the cruise, including bathymetry from PES, XBT ADCP, multimet, wave recorder and thermosalinograph.
7. To use a range of satellite-derived ice and weather intelligence where possible and appropriate.
All these objectives were met in full with the exception of number 4.
Chief scientistRobert R Dickson (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
ProjectADOX/WOCE
Cruise reportRRS Discovery D200 cruise report d200.pdf — access key 'C' (3.07 MB) 
Ocean/sea areas 
GeneralIndian Ocean
South East Atlantic Ocean (limit 20W)
SpecificSouthern Ocean
Track chartsRRS Discovery D200 cruise track — d200trk.pdf (00 MB) 
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 40
BathythermographQuantity: number of profiles = 138
CTD stationsQuantity: number of stations = 31
Current metersQuantity: number of stations = 16
Description: 57 cms deployed
Current profiler (eg ADCP)Quantity: activity duration in days = 40
Description: shipborne ADCP
Sea level (inc. bot. press., inverted echosounder)Quantity: number of stations = 2
Description: 2 deployed
Chemical oceanography 
OxygenQuantity: number of stations = 31
Description: 664 samples
Carbon dioxideQuantity: activity duration in days = 40
Description: cont. pCO2
Carbon dioxideDescription: TCO2
PhosphateQuantity: number of stations = 31
Description: 652 samples, also 269 surface samples
NitrateQuantity: number of stations = 31
Description: 652 samples
NitrateQuantity: number of samples = 269
Description: surface water samples
SilicateQuantity: number of stations = 31
Description: 652 samples, also 269 surface samples
IsotopesQuantity: number of samples = 690
Description: oxygen and hydrogen isotopes
Other chemical oceanographic measurementsQuantity: number of stations = 31
Description: CFC12, CFC11, CFC113, CFC10, CCl4
Other chemical oceanographic measurementsDescription: DMS and DMSP
Contamination 
Trace metalsQuantity: number of samples = 94
Description: Cadmium
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 40
Description: synoptic observations by ship's officers
Other meteorological measurementsQuantity: activity duration in days = 40
Description: wind,pressure,air temp, radiation,irradiance,lw radiation,wave height
Moorings, landers, buoys 
Physical oceanography 
Current meters63° 2' 59" S  83° 34' 59" E — 2 meters deployed
Current meters63° 30' 0" S  83° 55' 59" E — 3 meters deployed
Current meters46° 49' 59" S  53° 19' 59" E — 3 meters deployed
Current meters64° 49' 0" S  85° 7' 0" E — 2 meters deployed
Current meters48° 34' 0" S  61° 30' 0" E — 2 meters deployed
Current meters48° 22' 0" S  60° 28' 59" E — 3 meters deployed
Current meters47° 36' 0" S  56° 47' 59" E — 4 meters deployed
Current meters47° 23' 59" S  55° 36' 0" E — 4 meters deployed
Current meters45° 25' 59" S  47° 58' 59" E — 2 meters deployed
Current meters48° 0' 0" S  58° 37' 59" E — 3 meters deployed
Current meters47° 1' 59" S  54° 4' 59" E — 4 meters deployed
Current meters63° 55' 59" S  84° 17' 59" E — 3 meters deployed
Current meters64° 22' 0" S  84° 40' 59" E — 3 meters deployed
Current meters48° 10' 59" S  59° 37' 0" E — 4 meters deployed
Current meters47° 45' 0" S  58° 1' 59" E — 8 meters deployed
Current meters47° 7' 59" S  55° 6' 0" E — 7 meters deployed
Sea level (inc. bot. press., inverted echosounder)48° 34' 59" S  61° 27' 0" E — 1 bottom pressure recorder deployed
Sea level (inc. bot. press., inverted echosounder)46° 52' 0" S  53° 28' 0" E — 1 bottom pressure recorder deployed
Data held at BODC 
Series/Profiles 
26  Bottle station
Quality control flags
Silicate concentration parameters in the water column
Vertical spatial coordinates
Nitrate concentration parameters in the water column
Reference numbers
Phosphate concentration parameters in the water column
Quality control flags
Silicate concentration parameters in the water column
Vertical spatial coordinates
Nitrate concentration parameters in the water column
Reference numbers
Phosphate concentration parameters in the water column

BODC idDate/TimeLocationDoc.
12981171993-02-11 12:14 52° 0' 5" S  17° 30' 5" E  View metadata report for BODC series reference number 1298117
12981291993-02-12 10:36 54° 29' 58" S  19° 20' 59" E  View metadata report for BODC series reference number 1298129
12981301993-02-13 09:29 56° 15' 33" S  21° 7' 44" E  View metadata report for BODC series reference number 1298130
12981421993-02-14 06:32 58° 2' 12" S  23° 4' 9" E  View metadata report for BODC series reference number 1298142
12981541993-02-14 20:05 59° 40' 46" S  24° 53' 45" E  View metadata report for BODC series reference number 1298154
12981661993-02-16 06:00 62° 26' 13" S  28° 42' 38" E  View metadata report for BODC series reference number 1298166
12981781993-02-17 04:17 64° 28' 21" S  32° 26' 48" E  View metadata report for BODC series reference number 1298178
12981911993-02-17 08:20 64° 28' 35" S  32° 26' 48" E  View metadata report for BODC series reference number 1298191
12982091993-02-20 08:07 64° 40' 34" S  58° 9' 59" E  View metadata report for BODC series reference number 1298209
12982101993-02-23 09:11 62° 10' 5" S  83° 16' 12" E  View metadata report for BODC series reference number 1298210
12982221993-02-23 14:38 62° 44' 52" S  83° 28' 16" E  View metadata report for BODC series reference number 1298222
12982341993-02-24 00:34 63° 21' 16" S  83° 55' 47" E  View metadata report for BODC series reference number 1298234
12982461993-02-24 16:08 64° 10' 3" S  84° 34' 26" E  View metadata report for BODC series reference number 1298246
12982581993-02-25 00:46 64° 37' 13" S  84° 59' 37" E  View metadata report for BODC series reference number 1298258
12982711993-02-25 08:18 65° 5' 30" S  85° 19' 16" E  View metadata report for BODC series reference number 1298271
12982831993-02-26 01:02 63° 42' 46" S  84° 9' 49" E  View metadata report for BODC series reference number 1298283
12982951993-03-04 17:25 48° 28' 30" S  60° 57' 59" E  View metadata report for BODC series reference number 1298295
12983021993-03-05 16:07 48° 16' 22" S  60° 1' 4" E  View metadata report for BODC series reference number 1298302
12983141993-03-06 00:36 48° 5' 3" S  59° 9' 39" E  View metadata report for BODC series reference number 1298314
12983261993-03-06 19:15 47° 52' 23" S  58° 13' 38" E  View metadata report for BODC series reference number 1298326
12983381993-03-07 02:25 47° 40' 28" S  57° 18' 1" E  View metadata report for BODC series reference number 1298338
12983511993-03-08 19:59 47° 17' 29" S  55° 17' 26" E  View metadata report for BODC series reference number 1298351
12983631993-03-09 20:21 46° 54' 44" S  53° 38' 3" E  View metadata report for BODC series reference number 1298363
12983751993-03-10 03:00 47° 7' 48" S  54° 33' 35" E  View metadata report for BODC series reference number 1298375
12983871993-03-10 14:37 46° 46' 36" S  53° 7' 3" E  View metadata report for BODC series reference number 1298387
12983991993-03-11 15:59 45° 24' 6" S  47° 57' 55" E  View metadata report for BODC series reference number 1298399
25  CTD/STD cast
Density of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Density of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Dissolved oxygen parameters in the water column

BODC idDate/TimeLocationDoc.
10046981993-02-11 11:09 52° 0' 5" S  17° 30' 5" E  View metadata report for BODC series reference number 1004698
10047051993-02-12 09:06 54° 29' 58" S  19° 20' 59" E  View metadata report for BODC series reference number 1004705
10047171993-02-13 07:40 56° 15' 33" S  21° 7' 44" E  View metadata report for BODC series reference number 1004717
10047291993-02-14 04:19 58° 2' 12" S  23° 4' 9" E  View metadata report for BODC series reference number 1004729
10047301993-02-14 18:17 59° 40' 46" S  24° 53' 45" E  View metadata report for BODC series reference number 1004730
10047421993-02-16 04:13 62° 26' 13" S  28° 42' 38" E  View metadata report for BODC series reference number 1004742
10047541993-02-17 07:25 64° 28' 35" S  32° 26' 48" E  View metadata report for BODC series reference number 1004754
10047661993-02-20 06:30 64° 40' 34" S  58° 10' 0" E  View metadata report for BODC series reference number 1004766
10047781993-02-23 08:05 62° 10' 5" S  83° 16' 13" E  View metadata report for BODC series reference number 1004778
10047911993-02-23 13:27 62° 44' 52" S  83° 28' 16" E  View metadata report for BODC series reference number 1004791
10048091993-02-23 23:05 63° 21' 16" S  83° 55' 47" E  View metadata report for BODC series reference number 1004809
10048101993-02-24 14:31 64° 10' 3" S  84° 34' 26" E  View metadata report for BODC series reference number 1004810
10048221993-02-24 23:02 64° 37' 13" S  84° 59' 37" E  View metadata report for BODC series reference number 1004822
10048341993-02-25 07:03 65° 5' 30" S  85° 19' 16" E  View metadata report for BODC series reference number 1004834
10048461993-02-25 23:44 63° 42' 46" S  84° 9' 49" E  View metadata report for BODC series reference number 1004846
10048581993-03-04 15:29 48° 28' 30" S  60° 57' 59" E  View metadata report for BODC series reference number 1004858
10048711993-03-05 14:10 48° 16' 22" S  60° 1' 4" E  View metadata report for BODC series reference number 1004871
10048831993-03-05 22:44 48° 5' 4" S  59° 9' 39" E  View metadata report for BODC series reference number 1004883
10048951993-03-06 17:32 47° 52' 23" S  58° 13' 38" E  View metadata report for BODC series reference number 1004895
10049021993-03-07 00:45 47° 40' 28" S  57° 18' 1" E  View metadata report for BODC series reference number 1004902
10049141993-03-08 18:28 47° 17' 29" S  55° 17' 25" E  View metadata report for BODC series reference number 1004914
10049261993-03-09 19:02 46° 54' 44" S  53° 38' 3" E  View metadata report for BODC series reference number 1004926
10049381993-03-10 01:24 47° 7' 48" S  54° 33' 35" E  View metadata report for BODC series reference number 1004938
10049511993-03-10 13:33 46° 46' 36" S  53° 7' 3" E  View metadata report for BODC series reference number 1004951
10049631993-03-11 14:42 45° 24' 6" S  47° 57' 55" E  View metadata report for BODC series reference number 1004963
1  Single-beam echosounder
Bathymetry and Elevation
Horizontal spatial co-ordinates
Date and time
Bathymetry and Elevation
Horizontal spatial co-ordinates
Date and time

BODC idDate/TimeLocationDoc.
5821571993-02-06 18:46  — 1993-03-06 12:56 65° 9' 50" S  17° 27' 26" E — 34° 32' 17" S  85° 25' 8" E  View metadata report for BODC series reference number 582157
Discrete samples 
26  CTD frame plus rosette samplerStable isotope enrichment in the water column
Density of the water column
Transmittance and attenuance of the water column
Silicate concentration parameters in the water column
Other halocarbon concentrations in water bodies
Salinity of the water column
Chlorofluorocarbon concentrations in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Phosphate concentration parameters in the water column
135  Expendable BathythermographTemperature of the water column
110  Sample taken from ship's non-toxic supplyOrganosulphur and organoselenium species concentration parameters in water bodies
Chlorophyll pigment concentrations in water bodies
Phaeopigment concentrations in the water column