Resources

RRS Charles Darwin CD85

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Charles Darwin (74AB)
Cruise identifierCD85
Cruise period1994-04-11 — 1994-05-07
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
PurposeResearch
ObjectivesUK contribution to OMEX to quantify the biologically mediated cross-slope exchanges and vertical fluxes of biogenic material in the region of the Goban Spur.
Main Tasks:
1. 2 x SeaSoar survey to investigate hydrographic structure of region
2. Net sampling to study the data and night vertical distribution of macroplankton and micronekton.
3. Observe patterns of acoustic back-scatter using ship-borne ADCP; and 'sea-truthing' of data using LHPR net samples.
4. Asses marine snow distribution and abundance, using sediment trap moorings, cameras and large water bottles.
5. Evaluate cross-slope changes in phytoplankton and microzooplankton.
Chief scientistPhil Pugh (Institute of Oceanographic Sciences Deacon Laboratory)
ProjectOMEX II/MAST
Coordinating bodyEC
Cruise reportRRS Charles Darwin CD85 cruise report cd85.pdf (1.47 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificNE Atlantic, Goban Spur 49-50N;11-13W;, St. H 49N;16.5W
Track chartsRRS Charles Darwin CD85 cruise track — trk4073a.html RRS Charles Darwin CD85 cruise track — trk4073b.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Description: continuous thermosalinograph surface measurements
BathythermographQuantity: number of profiles = 36
Description: XBTs - DRA system, T7 and a few T5 probes
Water bottle stationsQuantity: number of stations = 18
Description: multisampler for microzooplankton collection on CTD
Water bottle stationsQuantity: number of stations = 20
Description: 100l water bottles to collect marine snow
Water bottle stationsQuantity: number of stations = 31
Description: 1 with S only)30l Niskins
CTD stationsQuantity: number of stations = 30
Description: CTD and marine snow profiling camera
CTD stationsQuantity: number of stations = 18
Description: CTD and multisampler for microzooplankton collection
Subsurface temperature and salinity measurementsQuantity: number of surveys = 2
Description: 2 SeaSoar surveys, towed undulating CTD plus fluorometer
Current profiler (eg ADCP)Description: continuous shipborne ADCP
Chemical oceanography 
PhosphateQuantity: number of surveys = 2
Description: autoanalyser run in conj. w. SeaSoar surveys, surface
PhosphateQuantity: number of stations = 31
Description: 30l Niskins
NitrateQuantity: number of stations = 31
Description: 30l Niskins
NitrateQuantity: number of surveys = 2
Description: autoanalyser run in conj. w. SeaSoar surveys, surface
NitriteQuantity: activity duration in days = 4
Description: ng autoanalyser run in conj. w. SeaSoar surveys, surface
AmmoniaQuantity: activity duration in days = 4
SilicateQuantity: number of stations = 31
Description: 30l Niskins
SilicateQuantity: activity duration in days = 4
Description: OPALWCP7 Particulate opaline silica
RadioactivityQuantity: number of samples = 31
Description: 30l Niskins
Biology and fisheries 
Primary productivityQuantity: number of stations = 31
Description: 30l Niskins
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: activity duration in days = 3
Description: CPHLPR01 In-situ fluorometer chlorophyll
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 31
Description: 30l Niskins
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of surveys = 2
Description: 2 SeaSoar surveys, towed undulating CTD plus fluorometer
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of experiments = 1
Description: MZCTDDTX Daily chlorophyll turnover by microzooplankton grazing
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: activity duration in days = 4
Description: CPHLFLP1 Fluorometric chlorophyll-a
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of surveys = 2
Description: SCHLFLPF Size-fractionated fluorometric chl-a
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of surveys = 2
Description: SCHLFLPB Size-fractionated fluorometric chl-a
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of surveys = 2
Description: CPHLFLP4 Fluorometric chlorophyll-a
Phytoplankton pigs (eg chlorophyll, fluorescence)Description: continuous fluorescence surface measurements
Particulate organic matter (inc POC, PON)Quantity: activity duration in days = 4
Description: CORGCAP1 Particulate organic carbon (acidified)
ZooplanktonQuantity: number of hauls = 28
Description: IOS RMT 1+8M towed multinet for microzooplankton and micronekton
ZooplanktonQuantity: number of deployments = 4
Description: Longhurst-Hardy plankton rec. for zooplank. to 'sea-truth' ADCP data
ZooplanktonQuantity: number of stations = 18
Description: multisampler for microzooplankton collection on CTD
ZooplanktonQuantity: number of hauls = 12
Description: various vertical nets for zooplankton
ZooplanktonQuantity: number of hauls = 17
Description: Apstein vertical nets for microzooplankton
SestonQuantity: number of stations = 20
Description: 100l water bottles to collect marine snow
SestonQuantity: number of deployments = 15
Description: CTD and marine snow profiling camera
NektonQuantity: number of hauls = 28
Description: IOS RMT 1+8M towed multinet for microzooplankton and micronekton
Other biological/fisheries measurementQuantity: number of profiles = 1
Description: MZBNMITX Total microzooplankton abundance (cell numbers)
Other biological/fisheries measurementQuantity: number of profiles = 1
Description: MZBCMITX Total microzooplankton biomass (expressed as carbon)
Other biological/fisheries measurementDescription: samples for phytoplankton species counts
Other biological/fisheries measurementQuantity: activity duration in days = 4
Description: PHAESPP1 Spectrophotometric phaeopigments (Lorenzen)
Moorings, landers, buoys 
Physical oceanography 
Current profiler (eg ADCP)49° 25' 0" N  11° 46' 59" W — moored ADCP laid 13 April, rec. 26 April
Biology and fisheries 
Primary productivity49° 31' 0" N  11° 28' 59" W — drifting prim. prod. rig depl. during daylight 1 May
Primary productivity49° 16' 0" N  12° 15' 0" W — drifting prim. prod. rig depl. during daylight 21 Apr
Primary productivity49° 10' 0" N  12° 46' 0" W — drifting prim. prod. rig depl. during daylight, 18 Apr
Sediment traps48° 58' 59" N  16° 22' 0" W — IOS sediment trap mooring, laid Sept 92, release fired, but no mooring
Sediment traps49° 25' 0" N  11° 31' 59" W — OMEX1 sediment trap mooring, laid Jan 94, not found
Sediment traps49° 10' 59" N  12° 49' 0" W — OMEX2 sediment trap mooring, rec. & redepl.
Sediment traps48° 58' 0" N  16° 28' 59" W — replacement IOS sediment trap mooring laid
Data held at BODC Get data
Series/Profiles 
55  Bottle station
Reference numbers
Carotenoid and flavenoid pigment concentrations in water bodies
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Vertical spatial coordinates
Silicate concentration parameters in the water column
Ammonium and ammonia concentration parameters in water bodies
Phaeopigment concentrations in the water column
Nitrate concentration parameters in the water column
Quality control flags
Chlorophyll pigment concentrations in water bodies
Reference numbers
Carotenoid and flavenoid pigment concentrations in water bodies
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Vertical spatial coordinates
Silicate concentration parameters in the water column
Ammonium and ammonia concentration parameters in water bodies
Phaeopigment concentrations in the water column
Nitrate concentration parameters in the water column
Quality control flags
Chlorophyll pigment concentrations in water bodies

BODC idDate/TimeLocationDoc.
16901441994-04-23 04:20 49° 24' 55" N  11° 35' 22" W  View metadata report for BODC series reference number 1690144
16901931994-04-27 23:23 49° 25' 42" N  11° 14' 44" W  View metadata report for BODC series reference number 1690193
16902121994-05-01 04:15 49° 31' 5" N  11° 28' 53" W  View metadata report for BODC series reference number 1690212
12680541994-05-01 04:15 49° 31' 5" N  11° 28' 53" W  View metadata report for BODC series reference number 1268054
12679291994-04-18 23:42 49° 7' 48" N  12° 49' 11" W  View metadata report for BODC series reference number 1267929
12679661994-04-23 04:20 49° 24' 55" N  11° 35' 22" W  View metadata report for BODC series reference number 1267966
12679781994-04-25 04:44 49° 20' 19" N  11° 38' 19" W  View metadata report for BODC series reference number 1267978
12679911994-04-26 04:38 49° 22' 0" N  11° 36' 29" W  View metadata report for BODC series reference number 1267991
12680171994-04-26 06:50 49° 23' 3" N  11° 35' 27" W  View metadata report for BODC series reference number 1268017
16651651994-04-18 03:40 49° 8' 40" N  12° 47' 11" W  View metadata report for BODC series reference number 1665165
16651891994-04-27 05:54 49° 30' 43" N  10° 58' 45" W  View metadata report for BODC series reference number 1665189
16801131994-04-18 06:50 49° 10' 10" N  12° 46' 30" W  View metadata report for BODC series reference number 1680113
16801861994-04-26 05:00 49° 22' 11" N  11° 36' 16" W  View metadata report for BODC series reference number 1680186
12824041994-04-27 05:54 49° 30' 43" N  10° 58' 45" W  View metadata report for BODC series reference number 1282404
16520931994-04-23 02:31 49° 25' 9" N  11° 33' 59" W  View metadata report for BODC series reference number 1652093
16651771994-04-18 06:02 49° 9' 54" N  12° 46' 5" W  View metadata report for BODC series reference number 1665177
16801501994-04-22 02:41 49° 12' 11" N  12° 15' 5" W  View metadata report for BODC series reference number 1680150
16802541994-05-02 22:50 49° 29' 36" N  10° 59' 27" W  View metadata report for BODC series reference number 1680254
16901681994-04-26 04:38 49° 22' 0" N  11° 36' 29" W  View metadata report for BODC series reference number 1690168
16902241994-05-02 04:59 49° 19' 48" N  11° 23' 54" W  View metadata report for BODC series reference number 1690224
12680051994-04-26 05:00 49° 22' 11" N  11° 36' 16" W  View metadata report for BODC series reference number 1268005
12680421994-04-30 04:03 49° 5' 48" N  13° 17' 53" W  View metadata report for BODC series reference number 1268042
12680781994-05-02 06:48 49° 20' 7" N  11° 24' 34" W  View metadata report for BODC series reference number 1268078
16801251994-04-20 12:15 49° 7' 3" N  12° 23' 37" W  View metadata report for BODC series reference number 1680125
16801741994-04-23 02:31 49° 25' 9" N  11° 33' 59" W  View metadata report for BODC series reference number 1680174
16802051994-04-27 03:50 49° 30' 19" N  10° 59' 39" W  View metadata report for BODC series reference number 1680205
16802661994-05-05 12:06 49° 33' 46" N  11° 7' 6" W  View metadata report for BODC series reference number 1680266
16902001994-04-30 04:03 49° 5' 48" N  13° 17' 53" W  View metadata report for BODC series reference number 1690200
12679421994-04-22 02:41 49° 12' 11" N  12° 15' 5" W  View metadata report for BODC series reference number 1267942
12680661994-05-02 04:59 49° 19' 48" N  11° 23' 54" W  View metadata report for BODC series reference number 1268066
12824161994-05-01 05:23 49° 31' 23" N  11° 28' 27" W  View metadata report for BODC series reference number 1282416
16801371994-04-20 12:58 49° 7' 4" N  12° 23' 28" W  View metadata report for BODC series reference number 1680137
16801491994-04-20 13:03 49° 7' 3" N  12° 23' 27" W  View metadata report for BODC series reference number 1680149
16801621994-04-22 20:24 49° 21' 1" N  11° 49' 44" W  View metadata report for BODC series reference number 1680162
16802421994-05-02 06:48 49° 20' 7" N  11° 24' 34" W  View metadata report for BODC series reference number 1680242
16901071994-04-16 04:58 49° 23' 57" N  12° 48' 44" W  View metadata report for BODC series reference number 1690107
16901191994-04-18 02:18 49° 8' 26" N  12° 47' 2" W  View metadata report for BODC series reference number 1690119
16901561994-04-25 04:44 49° 20' 19" N  11° 38' 19" W  View metadata report for BODC series reference number 1690156
12679051994-04-16 04:58 49° 23' 57" N  12° 48' 44" W  View metadata report for BODC series reference number 1267905
12679171994-04-18 02:18 49° 8' 26" N  12° 47' 2" W  View metadata report for BODC series reference number 1267917
16652081994-04-30 02:30 49° 5' 4" N  13° 18' 4" W  View metadata report for BODC series reference number 1665208
16802291994-04-30 04:03 49° 5' 48" N  13° 17' 53" W  View metadata report for BODC series reference number 1680229
16901321994-04-21 01:06 49° 10' 37" N  12° 20' 53" W  View metadata report for BODC series reference number 1690132
12679301994-04-21 01:06 49° 10' 37" N  12° 20' 53" W  View metadata report for BODC series reference number 1267930
12680291994-04-27 03:50 49° 30' 19" N  10° 59' 39" W  View metadata report for BODC series reference number 1268029
12680301994-04-27 23:23 49° 25' 42" N  11° 14' 44" W  View metadata report for BODC series reference number 1268030
16651901994-04-27 06:38 49° 30' 49" N  10° 58' 7" W  View metadata report for BODC series reference number 1665190
16801981994-04-26 06:50 49° 23' 3" N  11° 35' 27" W  View metadata report for BODC series reference number 1680198
16802171994-04-27 23:23 49° 25' 42" N  11° 14' 44" W  View metadata report for BODC series reference number 1680217
16901811994-04-27 03:50 49° 30' 19" N  10° 59' 39" W  View metadata report for BODC series reference number 1690181
12679541994-04-23 02:31 49° 25' 9" N  11° 33' 59" W  View metadata report for BODC series reference number 1267954
16521001994-04-30 04:03 49° 5' 48" N  13° 17' 53" W  View metadata report for BODC series reference number 1652100
16695111994-05-01 05:23 49° 31' 23" N  11° 28' 27" W  View metadata report for BODC series reference number 1669511
16802301994-05-01 04:15 49° 31' 5" N  11° 28' 53" W  View metadata report for BODC series reference number 1680230
16901201994-04-18 23:42 49° 7' 48" N  12° 49' 11" W  View metadata report for BODC series reference number 1690120
30  CTD/STD cast
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Density of the water column
Chlorophyll pigment concentrations in water bodies
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Density of the water column
Chlorophyll pigment concentrations in water bodies

BODC idDate/TimeLocationDoc.
8873491994-04-23 05:38 49° 24' 20" N  11° 36' 25" W  View metadata report for BODC series reference number 887349
8873981994-05-05 12:46 49° 33' 45" N  11° 7' 2" W  View metadata report for BODC series reference number 887398
8873131994-04-18 05:53 49° 9' 54" N  12° 46' 4" W  View metadata report for BODC series reference number 887313
8873501994-04-26 05:18 49° 22' 25" N  11° 36' 0" W  View metadata report for BODC series reference number 887350
8873861994-05-05 04:01 49° 34' 4" N  11° 10' 37" W  View metadata report for BODC series reference number 887386
8872331994-04-22 16:36 49° 25' 47" N  11° 46' 42" W  View metadata report for BODC series reference number 887233
8872821994-04-25 21:50 49° 21' 17" N  11° 36' 54" W  View metadata report for BODC series reference number 887282
8873251994-04-18 21:15 49° 7' 58" N  12° 49' 19" W  View metadata report for BODC series reference number 887325
8873621994-04-16 06:51 49° 25' 17" N  12° 46' 35" W  View metadata report for BODC series reference number 887362
8875221994-05-02 06:20 49° 19' 53" N  11° 24' 24" W  View metadata report for BODC series reference number 887522
8874541994-04-27 00:24 49° 27' 51" N  11° 11' 13" W  View metadata report for BODC series reference number 887454
8872571994-04-22 21:33 49° 21' 9" N  11° 49' 32" W  View metadata report for BODC series reference number 887257
8872691994-04-23 01:13 49° 25' 2" N  11° 33' 15" W  View metadata report for BODC series reference number 887269
8872941994-04-15 00:25 49° 16' 18" N  12° 13' 49" W  View metadata report for BODC series reference number 887294
8874421994-04-26 06:16 49° 22' 48" N  11° 35' 36" W  View metadata report for BODC series reference number 887442
8874661994-04-27 05:37 49° 30' 43" N  10° 58' 45" W  View metadata report for BODC series reference number 887466
8875091994-05-01 05:08 49° 31' 23" N  11° 28' 27" W  View metadata report for BODC series reference number 887509
8873011994-04-18 03:36 49° 8' 40" N  12° 47' 11" W  View metadata report for BODC series reference number 887301
8873741994-05-02 21:16 49° 29' 34" N  10° 59' 24" W  View metadata report for BODC series reference number 887374
8874781994-04-27 21:15 49° 26' 27" N  11° 14' 51" W  View metadata report for BODC series reference number 887478
8872451994-04-22 17:05 49° 25' 43" N  11° 46' 35" W  View metadata report for BODC series reference number 887245
8872701994-04-23 06:02 49° 24' 13" N  11° 36' 35" W  View metadata report for BODC series reference number 887270
8873371994-04-20 09:59 49° 7' 7" N  12° 23' 52" W  View metadata report for BODC series reference number 887337
8875101994-05-02 05:29 49° 19' 48" N  11° 24' 7" W  View metadata report for BODC series reference number 887510
8874051994-04-27 06:36 49° 30' 49" N  10° 58' 7" W  View metadata report for BODC series reference number 887405
8874171994-04-27 22:20 49° 26' 13" N  11° 14' 42" W  View metadata report for BODC series reference number 887417
8874911994-04-30 02:24 49° 5' 4" N  13° 18' 4" W  View metadata report for BODC series reference number 887491
8874291994-04-30 03:09 49° 5' 23" N  13° 18' 0" W  View metadata report for BODC series reference number 887429
8874301994-04-22 00:57 49° 11' 45" N  12° 14' 31" W  View metadata report for BODC series reference number 887430
8875341994-04-21 01:50 49° 10' 29" N  12° 20' 58" W  View metadata report for BODC series reference number 887534
2  Paddle wheel current meter
Transmittance and attenuance of the water column
Date and time
Salinity of the water column
Temperature of the water column
Horizontal velocity of the water column (currents)
Electrical conductivity of the water column
Transmittance and attenuance of the water column
Date and time
Salinity of the water column
Temperature of the water column
Horizontal velocity of the water column (currents)
Electrical conductivity of the water column

BODC idDate/TimeLocationDoc.
4443081994-04-18 14:04  — 1994-09-16 09:04:59 49° 11' 11" N  12° 49' 9" W  View metadata report for BODC series reference number 444308
4443211994-04-18 13:56  — 1994-09-16 09:57 49° 11' 11" N  12° 49' 9" W  View metadata report for BODC series reference number 444321
1  Pumped water sample
Horizontal spatial co-ordinates
Date and time
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies
Horizontal spatial co-ordinates
Date and time
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies

BODC idDate/TimeLocationDoc.
16762551994-04-13 17:15  — 1994-05-04 23:30 49° 5' 49" N  12° 43' 55" W — 49° 30' 48" N  10° 58' 26" W  View metadata report for BODC series reference number 1676255
Discrete samples 
8  1 metre sq. Indian Ocean standard net
17  Apstein opening-closing mesh zooplankton net
33  CTD frame plus rosette samplerCarotenoid and flavenoid pigment concentrations in water bodies
Nitrite concentration parameters in the water column
Phosphate concentration parameters in the water column
Salinity of the water column
Temperature of the water column
Phytoplankton generic biomass in water bodies
Silicate concentration parameters in the water column
Phytoplankton generic abundance in water bodies
Density of the water column
Ammonium and ammonia concentration parameters in water bodies
Microzooplankton non taxonomy-related biomass expressed as carbon per unit volume of the water column
Phaeopigment concentrations in the water column
Microzooplankton generic abundance in water bodies
Nitrate concentration parameters in the water column
Concentration of silicon species in the water column
Particulate total and organic carbon concentrations in the water column
Chlorophyll pigment concentrations in water bodies
36  Expendable Bathythermograph
3  In situ productivity incubations
3  Instrument mooringSedimentation flux of identified biota in the water column
Sedimentation flux of metallic and metalloid elements and isotopes in water bodies
Sedimentation flux of carbon, nitrogen or organic matter in the water column
Stable isotopes in water bodies
Sedimentation flux of pigments in the water column
Sedimentation flux of non-metallic inorganic species in the water column
Sedimentation flux of alkenones and alkenoates in the water column
Sediment grain size parameters
Sedimentation flux quantification in the water column
4  Longhurst-Hardy Plankton Recorder
19  Marine snow catcher
77  RMT multiple zooplankton net towZooplankton taxonomy-related abundance per unit volume of the water column
Zooplankton carbon biomass per unit area of the water column
38  Sample taken from ship's non-toxic supplySalinity of the water column
Phaeopigment concentrations in the water column
Chlorophyll pigment concentrations in water bodies
159  SeaSoar profile from gridded data
4  SeaSoar tow
3154  Shipborne Acoustic Doppler Current Profile
4  WP-2 zooplankton net
29  Water bottle hydrocastUptake of other nutrients in the water column
Regenerated production in water bodies
Carotenoid and flavenoid pigment concentrations in water bodies
Nitrite concentration parameters in the water column
Phytoplankton taxonomic abundance in water bodies
Phosphate concentration parameters in the water column
Silicate concentration parameters in the water column
Ammonium and ammonia concentration parameters in water bodies
Microzooplankton non taxonomy-related biomass expressed as carbon per unit volume of the water column
Microzooplankton grazing
Phaeopigment concentrations in the water column
Metadata parameters
Microzooplankton generic abundance in water bodies
Nitrate concentration parameters in the water column
New production in water bodies
Primary production in the water column
Concentration of silicon species in the water column
Particulate total and organic carbon concentrations in the water column
Chlorophyll pigment concentrations in water bodies