Cruise inventory

RRS Discovery D209

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD209
Cruise period1994-08-03 — 1994-08-22
StatusCompleted
Port of departureMuscat, Oman
Port of returnMuscat, Oman
PurposeResearch
Objectives1. To investigate the physicochemical feature of the upper ocean with a 10x50km SeaSoar survey with particular reference to the oxygen minimum.
2. To study the distribution patterns of zooplankton and micronekton using ADCp with LHPR and RMT sampling.
3. To determine the nutrient budget for the region by means of CTD profiles from the surface to the bottom, in a box of stations surrounding the SeaSoar survey.
4. To collect data on the optical characteristics of the upper water column, using instruments mounte dof the CTD, SeaSoar and Lightfish.
5. To investigate the vertical distribution of bioluminescence in pumpre profiles, and the biochemical characteristics of some of the bioluminescent organisms.
6. To carry out a predetermined suite of measurements at the Arabesque reference station at the start and end of the cruise.
Chief scientistPeter J Herring (Institute of Oceanographic Sciences Deacon Laboratory)
ProjectPart WOCE
Coordinating bodyIOC/WMO; within UK - NERC
Cruise reportRRS Discovery D209 cruise report d209.pdf — access key 'C' (2.05 MB) 
Ocean/sea areas 
GeneralIndian Ocean
Arabian Sea
SpecificNW Indian Ocean/Arabian Sea, 1830-20N; 58-59 30E
Track chartsRRS Discovery D209 cruise track — d209trk.pdf (00 MB) 
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of stations = 15
CTD stationsQuantity: number of stations = 15
Description: Neil Brown MKIII with sensors
Subsurface temperature and salinity measurementsQuantity: number of surveys = 2
Description: SeaSoar (CTD with sensors)
Transparency (eg transmissometer)Quantity: number of stations = 15
Description: CTD sensor
Optics (eg underwater light levels)Quantity: number of surveys = 2
Description: SeaSoar (CTD,fluorometer,irradiance sensor,light sensor)
Optics (eg underwater light levels)Quantity: number of deployments = 4
Description: lightfish with up and downlooking irradiance sensors
Current profiler (eg ADCP)Description: continuous shipborne ADCP profiles
Chemical oceanography 
OxygenQuantity: number of stations = 15
Description: CTD sensor
OxygenQuantity: number of surveys = 2
Description: SeaSoar (CTD, O2 sensor)
OxygenQuantity: number of stations = 15
PhosphateQuantity: number of stations = 15
NitrateQuantity: number of stations = 15
NitriteQuantity: number of stations = 15
SilicateQuantity: number of stations = 15
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 15
Description: CTD sensor (fluorometer)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 15
Phytoplankton pigs (eg chlorophyll, fluorescence)
Phytoplankton
ZooplanktonQuantity: number of hauls = 51
Description: rectangular mid-water trawls (RMT 1+8m), horizontal tows
ZooplanktonQuantity: number of hauls = 6
Description: Longhurst Hardy Plankton Recoder
NektonQuantity: number of hauls = 51
Description: rectangular mid-water trawls (RMT 1+8m), horizontal tows
Pelagic bacteria/micro-organismsQuantity: number of samples = 8
Description: samples for luminous and non-luminous bacteria
Acoustic reflection on marine organisms.Description: continuous from shipborne ADCP, to correlate with net samples
Other biological/fisheries measurementQuantity: number of profiles = 12
Description: French bioluminescence profiler
Meteorology 
Routine standard measurementsDescription: continuous
Data held at BODC 
Series/Profiles 
17  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.
12997231994-08-05 17:57 18° 59' 47" N  59° 0' 51" E  View metadata report for BODC series reference number 1299723
12997351994-08-06 03:42 18° 50' 23" N  59° 8' 21" E  View metadata report for BODC series reference number 1299735
12997471994-08-06 08:00 19° 1' 3" N  59° 15' 8" E  View metadata report for BODC series reference number 1299747
12997591994-08-06 14:37 19° 13' 15" N  59° 23' 13" E  View metadata report for BODC series reference number 1299759
12997601994-08-07 01:25 19° 19' 26" N  59° 11' 39" E  View metadata report for BODC series reference number 1299760
12997721994-08-07 06:31 19° 25' 55" N  59° 0' 29" E  View metadata report for BODC series reference number 1299772
12997841994-08-07 11:05 19° 32' 17" N  58° 49' 27" E  View metadata report for BODC series reference number 1299784
12997961994-08-07 15:04 19° 39' 29" N  58° 38' 7" E  View metadata report for BODC series reference number 1299796
12998031994-08-07 18:35 19° 46' 47" N  58° 25' 43" E  View metadata report for BODC series reference number 1299803
12998151994-08-07 23:00 19° 30' 6" N  58° 14' 28" E  View metadata report for BODC series reference number 1299815
12998271994-08-08 02:34 19° 12' 9" N  58° 3' 3" E  View metadata report for BODC series reference number 1299827
12998391994-08-08 07:08 19° 5' 20" N  58° 14' 35" E  View metadata report for BODC series reference number 1299839
12998401994-08-08 10:52 18° 58' 30" N  58° 25' 52" E  View metadata report for BODC series reference number 1299840
12998521994-08-08 15:35 18° 51' 37" N  58° 36' 52" E  View metadata report for BODC series reference number 1299852
12998641994-08-08 21:53 18° 44' 35" N  58° 48' 44" E  View metadata report for BODC series reference number 1299864
12998761994-08-09 02:33 18° 38' 19" N  59° 0' 9" E  View metadata report for BODC series reference number 1299876
12998881994-08-21 02:33 18° 59' 27" N  58° 59' 41" E  View metadata report for BODC series reference number 1299888
21  CTD/STD cast
Density of the water column
Transmittance and attenuance of 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
Chlorophyll pigment concentrations in water bodies
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column

BODC idDate/TimeLocationDoc.
10063801994-08-05 16:27 18° 59' 47" N  59° 0' 51" E  View metadata report for BODC series reference number 1006380
10063921994-08-06 02:20 18° 50' 22" N  59° 8' 21" E  View metadata report for BODC series reference number 1006392
10064111994-08-06 06:41 19° 1' 4" N  59° 15' 8" E  View metadata report for BODC series reference number 1006411
10064231994-08-06 13:15 19° 13' 15" N  59° 23' 13" E  View metadata report for BODC series reference number 1006423
10064351994-08-07 00:08 19° 19' 26" N  59° 11' 39" E  View metadata report for BODC series reference number 1006435
10064471994-08-07 05:17 19° 25' 55" N  59° 0' 29" E  View metadata report for BODC series reference number 1006447
10064591994-08-07 09:56 19° 32' 16" N  58° 49' 27" E  View metadata report for BODC series reference number 1006459
10064601994-08-07 14:29 19° 39' 29" N  58° 38' 7" E  View metadata report for BODC series reference number 1006460
10064721994-08-07 18:20 19° 46' 47" N  58° 25' 43" E  View metadata report for BODC series reference number 1006472
10064841994-08-07 22:45 19° 30' 6" N  58° 14' 28" E  View metadata report for BODC series reference number 1006484
10064961994-08-08 02:22 19° 12' 9" N  58° 3' 3" E  View metadata report for BODC series reference number 1006496
10065031994-08-08 06:34 19° 5' 21" N  58° 14' 35" E  View metadata report for BODC series reference number 1006503
10065151994-08-08 09:38 18° 58' 30" N  58° 25' 52" E  View metadata report for BODC series reference number 1006515
10065271994-08-08 14:18 18° 51' 37" N  58° 36' 52" E  View metadata report for BODC series reference number 1006527
10065391994-08-08 20:40 18° 44' 35" N  58° 48' 44" E  View metadata report for BODC series reference number 1006539
10065401994-08-09 01:09 18° 38' 19" N  59° 0' 9" E  View metadata report for BODC series reference number 1006540
10065521994-08-10 03:15 19° 36' 55" N  58° 30' 58" E  View metadata report for BODC series reference number 1006552
10065641994-08-12 13:44 19° 8' 36" N  59° 5' 24" E  View metadata report for BODC series reference number 1006564
10065761994-08-16 18:47 18° 56' 56" N  59° 5' 24" E  View metadata report for BODC series reference number 1006576
10065881994-08-18 05:35 19° 3' 31" N  58° 12' 11" E  View metadata report for BODC series reference number 1006588
10066071994-08-21 01:02 18° 59' 27" N  58° 59' 41" E  View metadata report for BODC series reference number 1006607
1  Pumped water sample
Horizontal spatial co-ordinates
Nitrate concentration parameters in the water column
Date and time
Phosphate concentration parameters in the water column
Horizontal spatial co-ordinates
Nitrate concentration parameters in the water column
Date and time
Phosphate concentration parameters in the water column

BODC idDate/TimeLocationDoc.
13604581994-08-10 19:30  — 1994-08-18 02:05 18° 43' 15" N  58° 3' 2" E — 19° 46' 25" N  59° 23' 17" E  View metadata report for BODC series reference number 1360458
Discrete samples 
21  CTD frame plus rosette samplerDensity of the water column
Transmittance and attenuance of the water column
Chlorophyll pigment concentrations in water bodies
Silicate concentration parameters in the water column
Salinity of the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Phaeopigment concentrations in the water column
Dissolved oxygen parameters in the water column
Phosphate concentration parameters in the water column
167  Sample taken from ship's non-toxic supplyChlorophyll pigment concentrations in water bodies
Salinity of the water column
Nitrate concentration parameters in the water column
Phaeopigment concentrations in the water column
Dissolved oxygen parameters in the water column
Phosphate concentration parameters in the water column
276  SeaSoar profile from gridded dataDensity of the water column
Chlorophyll pigment concentrations in water bodies
Salinity of the water column
Temperature of the water column