Cruise inventory

RRS Charles Darwin CD91B

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Charles Darwin (74AB)
Cruise identifierCD91B
Cruise period1995-03-22 — 1995-04-02
StatusCompleted
Port of departureFairlie, United Kingdom
Port of returnFairlie, United Kingdom
PurposeResearch
ObjectivesDeployment of moorings, CTD and water sampling, coring, sea-bed survey. Second part of two leg cruise. CD 91B - LOIS SES 1B
Chief scientistJohn Huthnance (Proudman Oceanographic Laboratory)
ProjectLOIS - SES
Coordinating bodyNERC
Cruise reportRRS Charles Darwin CD91B cruise report cd91.pdf — access key 'C' (2.21 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificNE Atlantic, Hebrides shelf edge & slope east of Hebrides terrace seamount
Track chartsRRS Charles Darwin CD91B cruise track — trk4074.html
Measurements 
Physical oceanography 
BathythermographQuantity: number of profiles = 1
Water bottle stationsQuantity: number of stations = 8
CTD stationsQuantity: number of stations = 10
Transparency (eg transmissometer)Quantity: number of stations = 10
Description: attached to CTD
Optics (eg underwater light levels)Quantity: number of stations = 10
Description: attached to CTD
Current profiler (eg ADCP)Quantity: activity duration in days = 9
Description: shipborne ADCP, vertical profile every 2 mins
Chemical oceanography 
OxygenQuantity: number of stations = 10
Description: attached to CTD
PhosphateQuantity: number of stations = 8
Total - PQuantity: number of stations = 8
NitrateQuantity: number of stations = 8
NitriteQuantity: number of stations = 8
Total - NQuantity: number of stations = 8
AmmoniaQuantity: number of stations = 8
SilicateQuantity: number of stations = 8
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 10
Description: attached to CTD
Particulate organic matter (inc POC, PON)Quantity: number of stations = 8
Dissolved organic matter (inc DOC)Quantity: number of stations = 8
Description: dissolved organic nitrogen
PhytoplanktonQuantity: number of stations = 8
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 6
Description: 3 Kasten, 2 gravity, 1 box
Bottom photographyQuantity: number of deployments = 6
Description: bed hop camera; 20 black and white photos/station
Multi-beam echosoundingQuantity: track kilometres = 969
Description: swathe bathymetry (simrad EM12)
Long/short range side scan sonarQuantity: track kilometres = 969
Description: swathe bathymetry (simrad EM12)
Moorings, landers, buoys 
Physical oceanography 
Subsurface temperature measurements56° 27' 6" N  9° 9' 29" W — +H16,D90 S700; surface toriod - sensors (t,c,transmittance); depl. 27 Mar 95
Transparency (eg transmissometer)56° 43' 59" N  9° 25' 5" W — +D01,D90,B73 N1500, 1 cm+t,c,transmittance,sediment trap; depl. 29 Mar 95
Transparency (eg transmissometer)56° 28' 5" N  8° 57' 42" W — +D01 S140, 2 cms+t; depl. 31 Mar 95
Transparency (eg transmissometer)56° 27' 11" N  9° 2' 48" W — +D01,D90,H24 S200, 3 cms+t,c;transmissometer,nitrate analyser; depl. 31 Mar 95
Transparency (eg transmissometer)56° 28' 30" N  9° 3' 36" W — +D01,D90 S300, 3 cms+t,c; 1 transmissometer; depl. 28 Mar 95
Transparency (eg transmissometer)56° 27' 42" N  9° 9' 42" W — +D01,D90 S700, 3 cms+t,c; 1 transmissometer;depl. 29 Mar 95
Transparency (eg transmissometer)56° 27' 6" N  9° 9' 29" W — +H16,D90 S700; surface toriod - sensors (t,c,transmittance); depl. 27 Mar 95
Transparency (eg transmissometer)56° 27' 6" N  9° 2' 53" W — +B02,H24,H16 S200,(t,s,transmittance,fluorescence,nitrate anal) depl.31 Mar 95
Current meters56° 27' 11" N  9° 2' 48" W — +D01,D90,H24 S200, 3 cms+t,c;transmissometer,nitrate analyser; depl. 31 Mar 95
Current meters56° 27' 42" N  9° 9' 42" W — +D01,D90 S700, 3 cms+t,c; 1 transmissometer;depl. 29 Mar 95
Current meters56° 43' 59" N  9° 25' 5" W — +D01,D90,B73 N1500, 1 cm+t,c,transmittance,sediment trap; depl. 29 Mar 95
Current meters56° 28' 30" N  9° 3' 36" W — +D01,D90 S300, 3 cms+t,c; 1 transmissometer; depl. 28 Mar 95
Current meters56° 28' 5" N  8° 57' 42" W — +D01 S140, 2 cms+t; depl. 31 Mar 95
Sea level (inc. bot. press., inverted echosounder)56° 27' 29" N  8° 58' 29" W — S140, bottom pressure recorder; depl. 27 Mar 95
Sea level (inc. bot. press., inverted echosounder)56° 27' 6" N  9° 38' 30" W — S1500, bottom pressure recorder; depl. 31 Mar 95
Other physical oceanographic measurements56° 43' 59" N  9° 25' 5" W — +D01,D90,B73 N1500, 1 cm+t,c,transmittance,sediment trap; depl. 29 Mar 95
Other physical oceanographic measurements56° 28' 30" N  9° 3' 36" W — +D01,D90 S300, 3 cms+t,c; 1 transmissometer; depl. 28 Mar 95
Other physical oceanographic measurements56° 27' 6" N  9° 9' 29" W — +H16,D90 S700; surface toriod - sensors (t,c,transmittance); depl. 27 Mar 95
Other physical oceanographic measurements56° 27' 42" N  9° 9' 42" W — +D01,D90 S700, 3 cms+t,c; 1 transmissometer;depl. 29 Mar 95
Other physical oceanographic measurements56° 27' 6" N  9° 2' 53" W — +B02,H24,H16 S200,(t,s,transmittance,fluorescence,nitrate anal) depl.31 Mar 95
Other physical oceanographic measurements56° 27' 11" N  9° 2' 48" W — +D01,D90,H24 S200, 3 cms+t,c;transmissometer,nitrate analyser; depl. 31 Mar 95
Chemical oceanography 
Nitrate56° 27' 6" N  9° 2' 53" W — +B02,H24,H16 S200,(t,s,transmittance,fluorescence,nitrate anal) depl.31 Mar 95
Nitrate56° 27' 11" N  9° 2' 48" W — +D01,D90,H24 S200, 3 cms+t,c;transmissometer,nitrate analyser; depl. 31 Mar 95
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)56° 27' 6" N  9° 2' 53" W — +B02,H24,H16 S200,(t,s,transmittance,fluorescence,nitrate anal) depl.31 Mar 95
Sediment traps56° 43' 59" N  9° 25' 5" W — +D01,D90,B73 N1500, 1 cm+t,c,transmittance,sediment trap; depl. 29 Mar 95
Meteorology 
Other meteorological measurements56° 27' 6" N  8° 58' 18" W — S140, surface met. buoy; depl. 23 Mar 95
Data held at BODC 
Series/Profiles 
8  Bottle station
Quality control flags
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Phaeopigment concentrations in the water column
Reference numbers
Quality control flags
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Phaeopigment concentrations in the water column
Reference numbers

BODC idDate/TimeLocationDoc.
16710541995-03-25 11:48 56° 37' 20" N  8° 55' 47" W  View metadata report for BODC series reference number 1671054
16710661995-04-01 14:02 56° 27' 57" N  9° 3' 11" W  View metadata report for BODC series reference number 1671066
16710781995-03-26 09:36 56° 37' 42" N  9° 0' 10" W  View metadata report for BODC series reference number 1671078
16710911995-03-26 18:55 56° 38' 13" N  9° 0' 57" W  View metadata report for BODC series reference number 1671091
16711091995-03-27 20:13 56° 26' 56" N  9° 10' 0" W  View metadata report for BODC series reference number 1671109
16711101995-03-28 16:50 56° 29' 24" N  9° 2' 53" W  View metadata report for BODC series reference number 1671110
16711221995-03-29 12:30 56° 28' 18" N  9° 9' 11" W  View metadata report for BODC series reference number 1671122
16711341995-03-31 14:43 56° 29' 2" N  8° 58' 19" W  View metadata report for BODC series reference number 1671134
1  Bottom pressure sensor tide gauge
Sea level
Temperature of the water column
Date and time
Sea level
Temperature of the water column
Date and time

BODC idDate/TimeLocationDoc.
4426391995-03-27 22:45:30  — 1995-05-11 14:15:30 56° 27' 31" N  8° 58' 28" W  View metadata report for BODC series reference number 442639
10  CTD/STD cast
Density of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Density of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column

BODC idDate/TimeLocationDoc.
8479131995-03-26 18:40 56° 38' 13" N  9° 0' 57" W  View metadata report for BODC series reference number 847913
8479251995-03-28 16:35 56° 29' 24" N  9° 2' 52" W  View metadata report for BODC series reference number 847925
8479371995-04-01 13:47 56° 27' 57" N  9° 3' 11" W  View metadata report for BODC series reference number 847937
8479491995-03-25 11:30 56° 37' 19" N  8° 55' 47" W  View metadata report for BODC series reference number 847949
8479501995-03-26 09:26 56° 37' 42" N  9° 0' 10" W  View metadata report for BODC series reference number 847950
8479621995-03-27 19:46 56° 26' 56" N  9° 10' 0" W  View metadata report for BODC series reference number 847962
8479741995-03-28 13:02 56° 29' 24" N  9° 0' 36" W  View metadata report for BODC series reference number 847974
8479861995-03-29 12:04 56° 28' 18" N  9° 9' 11" W  View metadata report for BODC series reference number 847986
8479981995-03-29 16:38 56° 44' 49" N  9° 25' 41" W  View metadata report for BODC series reference number 847998
8480011995-03-31 14:29 56° 29' 1" N  8° 58' 19" W  View metadata report for BODC series reference number 848001
1  Fluorometers
Chlorophyll pigment concentrations in water bodies
Raw fluorometer output
Date and time
Chlorophyll pigment concentrations in water bodies
Raw fluorometer output
Date and time

BODC idDate/TimeLocationDoc.
4761991995-03-31 21:02:56  — 1995-04-16 13:02:57 56° 27' 10" N  9° 2' 46" W  View metadata report for BODC series reference number 476199
9  Paddle wheel current meter
Moored instrument depth
Transmittance and attenuance of the water column
Electrical conductivity of the water column
Salinity of the water column
Horizontal velocity of the water column (currents)
Temperature of the water column
Date and time
Moored instrument depth
Transmittance and attenuance of the water column
Electrical conductivity of the water column
Salinity of the water column
Horizontal velocity of the water column (currents)
Temperature of the water column
Date and time

BODC idDate/TimeLocationDoc.
4390421995-03-31 20:25  — 1995-04-16 12:55 56° 27' 10" N  9° 2' 46" W  View metadata report for BODC series reference number 439042
4392261995-03-31 20:25  — 1995-04-16 12:55 56° 27' 10" N  9° 2' 46" W  View metadata report for BODC series reference number 439226
4392141995-03-29 22:30  — 1995-05-13 05:30 56° 43' 5" N  9° 24' 29" W  View metadata report for BODC series reference number 439214
4361361995-03-28 15:35  — 1995-04-10 23:05 56° 28' 27" N  9° 3' 42" W  View metadata report for BODC series reference number 436136
4391951995-03-29 10:38  — 1995-05-09 23:48 56° 27' 43" N  9° 9' 40" W  View metadata report for BODC series reference number 439195
4312611995-03-31 20:25  — 1995-04-16 12:55 56° 27' 10" N  9° 2' 46" W  View metadata report for BODC series reference number 431261
4361611995-03-29 10:55  — 1995-04-27 01:45 56° 27' 43" N  9° 9' 40" W  View metadata report for BODC series reference number 436161
4391831995-03-31 13:35  — 1995-05-08 14:55 56° 28' 4" N  8° 57' 40" W  View metadata report for BODC series reference number 439183
4391711995-03-31 13:35  — 1995-05-08 14:55 56° 28' 4" N  8° 57' 40" W  View metadata report for BODC series reference number 439171
1  Pumped water sample
Chlorophyll pigment concentrations in water bodies
Horizontal spatial co-ordinates
Phaeopigment concentrations in the water column
Date and time
Chlorophyll pigment concentrations in water bodies
Horizontal spatial co-ordinates
Phaeopigment concentrations in the water column
Date and time

BODC idDate/TimeLocationDoc.
16579271995-03-25 10:50  — 1995-04-01 14:28 56° 27' 10" N  9° 25' 35" W — 56° 44' 44" N  8° 56' 24" W  View metadata report for BODC series reference number 1657927
2  Thermistor chain
Vertical spatial coordinates
Temperature of the water column
Date and time
Vertical spatial coordinates
Temperature of the water column
Date and time

BODC idDate/TimeLocationDoc.
4396201995-03-31 20:20  — 1995-04-16 13:00 56° 27' 10" N  9° 2' 46" W  View metadata report for BODC series reference number 439620
4395761995-03-31 20:20  — 1995-04-16 13:00 56° 27' 10" N  9° 2' 46" W  View metadata report for BODC series reference number 439576
2  Transmissometer
Transmittance and attenuance of the water column
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Date and time
Transmittance and attenuance of the water column
Electrical conductivity of the water column
Salinity of the water column
Temperature of the water column
Date and time

BODC idDate/TimeLocationDoc.
4961151995-03-27 18:20:40  — 1995-04-01 11:57:39 56° 27' 6" N  9° 9' 30" W  View metadata report for BODC series reference number 496115
4960721995-03-31 20:20  — 1995-04-16 13:02 56° 27' 10" N  9° 2' 46" W  View metadata report for BODC series reference number 496072
Discrete samples 
10  CTD frame plus rosette samplerDensity of the water column
Transmittance and attenuance of the water column
Visible waveband radiance and irradiance measurements in the water column
Chlorophyll pigment concentrations in water bodies
Salinity of the water column
Concentration of suspended particulate material in the water column
Temperature of the water column
Phaeopigment concentrations in the water column
1  Instrument mooringSedimentation flux of carbon, nitrogen or organic matter in the water column
Carbon concentrations in suspended particulate material
Concentration of silicon species in suspended particulate material
Sedimentation flux of non-metallic inorganic species in the water column
Nitrogen concentrations in suspended particulate material
Other physical and chemical properties of suspended particulate material
Sedimentation flux quantification in the water column
9  Sample taken from ship's non-toxic supplyChlorophyll pigment concentrations in water bodies
Phaeopigment concentrations in the water column