Cruise inventory

RV Prince Madog PD07/08

Cruise summary report

Cruise inventory

Cruise Info. 
Ship name (ship code)RV Prince Madog (74P2)
Cruise identifierPD07/08
Cruise period2008-03-10 — 2008-03-15
StatusCompleted
Port of departureBarrow-in-Furness, United Kingdom
Port of returnBarrow-in-Furness, United Kingdom
PurposeResearch
ObjectivesObjectives
1. At 53 32 N 3 21.8 W, half a mile west of the Mersey Bar Light Vessel (site A)
To recover: (a) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves. A Sea-Bird SBE 16plus with pumped conductivity sensor, digiquartz pressure sensor and a SeaPoint turbidity sensor was fitted to the frame. The frame was fitted with a SonTek ADV; (b) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring. Attached to the mooring wire are SeaBird MicroCat temperature, conductivity loggers at 5 and 10m below the surface and miniloggers at 7.5 and 15 m below the surface.
To deploy: (c) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves. A Sea-Bird SBE 16plus with pumped conductivity sensor, digiquartz pressure sensor, a SeaPoint turbidity sensor, Aanderaa optode and a SonTek ADV were fitted to the frame; (d) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring. Attached to the mooring wire are Sea-Bird MicroCat temperature, conductivity loggers at 5 and 10m below the surface and miniloggers at 7.5 and 15 m below the surface.
2. At 53 27 N 3 38.6 W (site 21, second site, B)
To recover: (a) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves. A Sea-Bird SBE 16plus with pumped conductivity sensor, digiquartz pressure sensor and a SeaPoint turbidity sensor were fitted to the frame. A 1200 kHz telemetry ADCP was fitted to the frame; (b) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring. Attached to the mooring wire are Sea-Bird MicroCat temperature, conductivity loggers at 5 and 10m below the surface and miniloggers at 7.5 and 15 m below the surface; (c) A telemetry toroid.
To deploy: (d) A sea bed frame for a 600 kHz ADCP (waves ADCP) to measure the mean current profile, pressures and directional waves. A Sea-Bird SBE 16plus with pumped conductivity sensor, digiquartz pressure sensor, a SeaPoint turbidity sensor were fitted to the frame. A 1200 kHz telemetry ADCP was fitted to the frame; (e) A CEFAS SmartBuoy (with cellulose bags) in a single point mooring. Attached to the mooring wire are Sea-Bird MicroCat temperature, conductivity loggers at 5 and 10m below the surface and miniloggers at 7.5 and 15 m below the surface; (f) A telemetry toroid.
3. To conduct a CTD / LISST survey of 34 sites every 5 miles covering the eastern Irish Sea between the North Wales coast and Blackpool and the Lancashire coast and the Great Orme, to determine the effects of the rivers Dee, Mersey and Ribble on Liverpool Bay. To obtain calibration samples for salinity, transmittance, suspended sediment and for chlorophyll at selected stations. To obtain near surface and bed water samples for nutrient and suspended sediment determination.
4. Collect 10 vertical net hauls at mooring site A.
5. Collect sediment samples at each of the CTD sites.
6. To recover an ADCP frame at 53 27 N 3 30.2 W (site 12)
7. To conduct a 25 hour CTD / LISST survey every 30 minutes and recover a STABLE lander at 53 22.4 N 3 14.1 W (Hilbre Channel, Dee Estuary)
8. To conduct a 25 hour CTD / LISST survey every 30 minutes and recover a Mini-STABLE lander at 53 22.2 N 3 19.6 W (Welsh Channel, Dee Estuary)
Chief scientistPhil J Knight (Proudman Oceanographic Laboratory)
ProjectCoastal Observatory Cruises
Coordinating bodyPOL
Cruise reportRV Prince Madog PD07/08 cruise report pd07_08.pdf — access key 'C' (0.31 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
SpecificIrish Sea
Track chartsRV Prince Madog PD07/08 cruise track — pd07_08trk.pdf (0.05 MB) 
Measurements 
Physical oceanography 
CTD stationsQuantity: number of profiles = 30
Description: SeaBird CTD
Transparency (eg transmissometer)Quantity: number of profiles = 30
Description: Transmissometer and LISST on CTD
Optics (eg underwater light levels)Quantity: number of profiles = 30
Description: Irradiance sensors on CTD
Chemical oceanography 
NitrateQuantity: number of stations = 23
Description: Water samples for nutrient analysis
NitriteQuantity: number of stations = 23
Description: Water samples for nutrient analysis
SilicateQuantity: number of stations = 23
Description: Water samples for nutrient analysis
Other chemical oceanographic measurementsQuantity: number of stations = 23
Description: Water samples for nutrient analysis
Contamination 
Suspended matterQuantity: number of stations = 23
Description: Filtration of near surface and near bed water samples
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of profiles = 30
Description: Fluorometer on CTD
PhytoplanktonQuantity: number of stations = 10
Description: Net hauls at 53 32N 3 22W
PhytoplanktonQuantity: number of stations = 9
Description: Lab analysis for phytoplankton from water bottle samples
ZooplanktonQuantity: number of stations = 10
Description: Net hauls at 53 32N 3 22W
Geology and geophysics 
GrabQuantity: number of stations = 22
Description: Sediment grabs
Moorings, landers, buoys 
Physical oceanography 
Current profiler (eg ADCP)53° 22' 23" N  3° 14' 5" W — Recover STABLE, ADCPs, ADVs, optical back scatter, LIST100X
Current profiler (eg ADCP)53° 22' 11" N  3° 19' 35" W — Recover Mini STABLE, ADCP, ADVs, POL ABS, LIST 100
Current profiler (eg ADCP)53° 31' 59" N  3° 21' 59" W — Deploy Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity & Aanderaa oxygen sensors and SonTek ADV.
Current profiler (eg ADCP)53° 27' 0" N  3° 38' 59" W — Recover Sea Bed Frame ADCPs, Sea-Bird CTD 16 Plus with turbidity.
Current profiler (eg ADCP)53° 27' 0" N  3° 30' 11" W — Recover Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity
Current profiler (eg ADCP)53° 27' 0" N  3° 38' 59" W — Deploy Sea Bed Frame ADCPs, Sea-Bird CTD 16 Plus with turbidity sensor.
Current profiler (eg ADCP)53° 31' 59" N  3° 21' 59" W — Recover Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity sensor and SonTek ADV.
Sea level (inc. bot. press., inverted echosounder)53° 27' 0" N  3° 30' 11" W — Recover Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity
Sea level (inc. bot. press., inverted echosounder)53° 31' 59" N  3° 21' 59" W — Recover Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity sensor and SonTek ADV.
Sea level (inc. bot. press., inverted echosounder)53° 27' 0" N  3° 38' 59" W — Deploy Sea Bed Frame ADCPs, Sea-Bird CTD 16 Plus with turbidity sensor.
Sea level (inc. bot. press., inverted echosounder)53° 27' 0" N  3° 38' 59" W — Recover Sea Bed Frame ADCPs, Sea-Bird CTD 16 Plus with turbidity.
Sea level (inc. bot. press., inverted echosounder)53° 31' 59" N  3° 21' 59" W — Deploy Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity & Aanderaa oxygen sensors and SonTek ADV.
Other physical oceanographic measurements53° 27' 0" N  3° 38' 59" W — Deploy Surface Buoy Mooring Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Other physical oceanographic measurements53° 31' 59" N  3° 21' 59" W — Deploy Surface Buoy Mooring Surface water sampler, Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Other physical oceanographic measurements53° 31' 59" N  3° 21' 59" W — Recover Surface Buoy Mooring Surface water sampler, Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Other physical oceanographic measurements53° 27' 0" N  3° 30' 11" W — Recover Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity
Other physical oceanographic measurements53° 27' 0" N  3° 38' 59" W — Recover Sea Bed Frame ADCPs, Sea-Bird CTD 16 Plus with turbidity.
Other physical oceanographic measurements53° 31' 59" N  3° 21' 59" W — Deploy Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity & Aanderaa oxygen sensors and SonTek ADV.
Other physical oceanographic measurements53° 31' 59" N  3° 21' 59" W — Recover Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity sensor and SonTek ADV.
Other physical oceanographic measurements53° 22' 11" N  3° 19' 35" W — Recover Mini STABLE, ADCP, ADVs, POL ABS, LIST 100
Other physical oceanographic measurements53° 22' 23" N  3° 14' 5" W — Recover STABLE, ADCPs, ADVs, optical back scatter, LIST100X
Other physical oceanographic measurements53° 27' 0" N  3° 38' 59" W — Recover Surface Buoy Mooring Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats.
Other physical oceanographic measurements53° 27' 0" N  3° 38' 59" W — Deploy Sea Bed Frame ADCPs, Sea-Bird CTD 16 Plus with turbidity sensor.
Chemical oceanography 
Oxygen53° 31' 59" N  3° 21' 59" W — Deploy Sea Bed Frame ADCP, Sea-Bird CTD 16 Plus with turbidity & Aanderaa oxygen sensors and SonTek ADV.
Nitrite53° 27' 0" N  3° 38' 59" W — Deploy Surface Buoy Mooring Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Nitrite53° 27' 0" N  3° 38' 59" W — Recover Surface Buoy Mooring Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats.
Nitrite53° 31' 59" N  3° 21' 59" W — Recover Surface Buoy Mooring Surface water sampler, Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Nitrite53° 31' 59" N  3° 21' 59" W — Deploy Surface Buoy Mooring Surface water sampler, Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Silicate53° 27' 0" N  3° 38' 59" W — Deploy Surface Buoy Mooring Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Silicate53° 31' 59" N  3° 21' 59" W — Deploy Surface Buoy Mooring Surface water sampler, Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Silicate53° 27' 0" N  3° 38' 59" W — Recover Surface Buoy Mooring Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats.
Silicate53° 31' 59" N  3° 21' 59" W — Recover Surface Buoy Mooring Surface water sampler, Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Biology and fisheries 
Other biological/fisheries measurement53° 27' 0" N  3° 38' 59" W — Deploy Surface Buoy Mooring Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Other biological/fisheries measurement53° 27' 0" N  3° 38' 59" W — Recover Surface Buoy Mooring Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats.
Other biological/fisheries measurement53° 31' 59" N  3° 21' 59" W — Recover Surface Buoy Mooring Surface water sampler, Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Other biological/fisheries measurement53° 31' 59" N  3° 21' 59" W — Deploy Surface Buoy Mooring Surface water sampler, Surface CTD, Surface mounted cellulose bags, Sea-Bird microcats and Vemco loggers.
Data held at BODC 
Series/Profiles 
30  CTD/STD cast
Raw suspended particulate material optical sensor output
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Raw fluorometer output
Dissolved oxygen parameters in the water column
Temperature of the water column
Salinity of the water column
Vertical spatial coordinates
[Show series]
Raw suspended particulate material optical sensor output
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Raw fluorometer output
Dissolved oxygen parameters in the water column
Temperature of the water column
Salinity of the water column
Vertical spatial coordinates
[Hide series]

BODC idDate/TimeLocationDoc.
9469232008-03-13 11:01 53° 22' 9" N  3° 19' 53" W  View metadata report for BODC series reference number 946923
9469352008-03-13 11:31 53° 22' 8" N  3° 19' 54" W  View metadata report for BODC series reference number 946935
9469472008-03-13 12:00 53° 22' 9" N  3° 19' 53" W  View metadata report for BODC series reference number 946947
9469592008-03-13 12:30 53° 22' 9" N  3° 19' 53" W  View metadata report for BODC series reference number 946959
9469602008-03-13 12:59 53° 22' 9" N  3° 19' 53" W  View metadata report for BODC series reference number 946960
9471762008-03-15 09:06 53° 37' 4" N  3° 13' 29" W  View metadata report for BODC series reference number 947176
9471882008-03-15 09:46 53° 41' 58" N  3° 13' 34" W  View metadata report for BODC series reference number 947188
9472072008-03-15 10:24 53° 41' 55" N  3° 22' 21" W  View metadata report for BODC series reference number 947207
9472192008-03-15 11:30 53° 46' 55" N  3° 21' 40" W  View metadata report for BODC series reference number 947219
9472202008-03-15 12:10 53° 47' 8" N  3° 13' 28" W  View metadata report for BODC series reference number 947220
9472322008-03-15 13:00 53° 52' 5" N  3° 21' 52" W  View metadata report for BODC series reference number 947232
9469722008-03-13 18:45 53° 27' 2" N  3° 13' 30" W  View metadata report for BODC series reference number 946972
9469842008-03-13 21:52 53° 26' 59" N  3° 21' 35" W  View metadata report for BODC series reference number 946984
9469962008-03-13 22:48 53° 26' 55" N  3° 29' 50" W  View metadata report for BODC series reference number 946996
9470112008-03-13 23:48 53° 22' 54" N  3° 38' 15" W  View metadata report for BODC series reference number 947011
9470232008-03-14 00:35 53° 22' 57" N  3° 46' 37" W  View metadata report for BODC series reference number 947023
9470352008-03-14 01:28 53° 22' 2" N  3° 55' 14" W  View metadata report for BODC series reference number 947035
9470472008-03-14 02:15 53° 27' 6" N  3° 55' 6" W  View metadata report for BODC series reference number 947047
9470592008-03-14 03:04 53° 31' 53" N  3° 55' 4" W  View metadata report for BODC series reference number 947059
9470602008-03-14 04:01 53° 31' 49" N  3° 46' 41" W  View metadata report for BODC series reference number 947060
9470722008-03-14 04:45 53° 27' 8" N  3° 46' 50" W  View metadata report for BODC series reference number 947072
9470842008-03-14 05:52 53° 31' 58" N  3° 38' 43" W  View metadata report for BODC series reference number 947084
9470962008-03-14 06:40 53° 31' 49" N  3° 30' 16" W  View metadata report for BODC series reference number 947096
9471032008-03-14 07:57 53° 32' 3" N  3° 22' 4" W  View metadata report for BODC series reference number 947103
9471152008-03-14 11:31 53° 31' 45" N  3° 21' 4" W  View metadata report for BODC series reference number 947115
9471272008-03-14 13:43 53° 32' 8" N  3° 15' 25" W  View metadata report for BODC series reference number 947127
9471392008-03-14 15:36 53° 26' 57" N  3° 38' 22" W  View metadata report for BODC series reference number 947139
9471402008-03-14 19:34 53° 26' 52" N  3° 39' 11" W  View metadata report for BODC series reference number 947140
9471522008-03-15 07:39 53° 36' 56" N  3° 30' 10" W  View metadata report for BODC series reference number 947152
9471642008-03-15 08:23 53° 36' 58" N  3° 21' 51" W  View metadata report for BODC series reference number 947164
2  Fluorometers
Date and time
Raw fluorometer output
Reference numbers
Chlorophyll pigment concentrations in the water column
[Show series]
Date and time
Raw fluorometer output
Reference numbers
Chlorophyll pigment concentrations in the water column
[Hide series]

BODC idDate/TimeLocationDoc.
8622882008-03-14 11:00  — 2008-04-13 23:30 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 862288
8623932008-03-14 19:00  — 2008-04-16 17:00 53° 26' 53" N  3° 38' 18" W  View metadata report for BODC series reference number 862393
1  GPS positioning system
Date and time
Horizontal spatial co-ordinates
Platform or instrument orientation
Bathymetry and Elevation
Horizontal platform movement
[Show series]
Date and time
Horizontal spatial co-ordinates
Platform or instrument orientation
Bathymetry and Elevation
Horizontal platform movement
[Hide series]

BODC idDate/TimeLocationDoc.
9321532008-03-10 23:46  — 2008-03-15 14:28 53° 21' 15" N  3° 55' 32" W — 54° 4' 28" N  3° 0' 43" W  View metadata report for BODC series reference number 932153
1  In-situ dissolved gas analyser
Metadata parameters
Date and time
Dissolved oxygen parameters in the water column
Reference numbers
[Show series]
Metadata parameters
Date and time
Dissolved oxygen parameters in the water column
Reference numbers
[Hide series]

BODC idDate/TimeLocationDoc.
8629222008-03-14 11:00  — 2008-04-16 10:30 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 862922
1  In-situ nutrient analyser
Date and time
Nitrate concentration parameters in the water column
Reference numbers
[Show series]
Date and time
Nitrate concentration parameters in the water column
Reference numbers
[Hide series]

BODC idDate/TimeLocationDoc.
10823712008-03-14 11:00  — 2008-03-22 00:30 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 1082371
1  Meteorological data logger
Date and time
Wind speed and direction
Horizontal spatial co-ordinates
Air temperature
Solar Radiation
Atmospheric humidity
Air pressure
[Show series]
Date and time
Wind speed and direction
Horizontal spatial co-ordinates
Air temperature
Solar Radiation
Atmospheric humidity
Air pressure
[Hide series]

BODC idDate/TimeLocationDoc.
9321412008-03-10 23:46  — 2008-03-15 14:28 53° 21' 15" N  3° 55' 32" W — 54° 4' 28" N  3° 0' 43" W  View metadata report for BODC series reference number 932141
8  Moored CTD
Moored instrument depth
Metadata parameters
Date and time
Electrical conductivity of the water column
Sea level expressed as pressure
Dissolved oxygen parameters in the water column
Temperature of the water column
Concentration of suspended particulate material in the water column
Salinity of the water column
Reference numbers
[Show series]
Moored instrument depth
Metadata parameters
Date and time
Electrical conductivity of the water column
Sea level expressed as pressure
Dissolved oxygen parameters in the water column
Temperature of the water column
Concentration of suspended particulate material in the water column
Salinity of the water column
Reference numbers
[Hide series]

BODC idDate/TimeLocationDoc.
7723742008-03-14 10:30:03  — 2008-04-16 12:30:03 53° 32' 1" N  3° 21' 24" W  View metadata report for BODC series reference number 772374
7723862008-03-14 11:00  — 2008-04-16 10:40 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 772386
7724052008-03-14 11:00  — 2008-04-16 10:40 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 772405
7724292008-03-14 18:50:03  — 2008-04-16 15:20:03 53° 26' 58" N  3° 38' 31" W  View metadata report for BODC series reference number 772429
7723982008-03-14 19:00:01  — 2008-04-16 17:10:01 53° 26' 53" N  3° 38' 18" W  View metadata report for BODC series reference number 772398
7724172008-03-14 19:00:01  — 2008-04-16 17:10:01 53° 26' 53" N  3° 38' 18" W  View metadata report for BODC series reference number 772417
8620802008-03-14 11:00  — 2008-04-01 23:30 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 862080
8621842008-03-14 19:00  — 2008-04-16 17:00 53° 26' 53" N  3° 38' 18" W  View metadata report for BODC series reference number 862184
2  Nephelometers and optical backscatter sensors
Date and time
Concentration of suspended particulate material in the water column
Reference numbers
[Show series]
Date and time
Concentration of suspended particulate material in the water column
Reference numbers
[Hide series]

BODC idDate/TimeLocationDoc.
8625042008-03-14 11:00  — 2008-04-16 10:30 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 862504
8626082008-03-14 19:00  — 2008-04-16 17:00 53° 26' 53" N  3° 38' 18" W  View metadata report for BODC series reference number 862608
1  Ship's non-toxic supply
Date and time
Raw suspended particulate material optical sensor output
Transmittance and attenuance of the water column
Horizontal spatial co-ordinates
Raw fluorometer output
Temperature of the water column
Salinity of the water column
[Show series]
Date and time
Raw suspended particulate material optical sensor output
Transmittance and attenuance of the water column
Horizontal spatial co-ordinates
Raw fluorometer output
Temperature of the water column
Salinity of the water column
[Hide series]

BODC idDate/TimeLocationDoc.
9321282008-03-10 23:46  — 2008-03-15 14:28 53° 21' 15" N  3° 55' 32" W — 54° 4' 28" N  3° 0' 43" W  View metadata report for BODC series reference number 932128
2  Water temperature and/or salinity monitor
Date and time
Temperature of the water column
Reference numbers
[Show series]
Date and time
Temperature of the water column
Reference numbers
[Hide series]

BODC idDate/TimeLocationDoc.
7724302008-03-14 11:00  — 2008-04-16 10:40 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 772430
7724422008-03-14 11:00  — 2008-04-16 10:40 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 772442
2  radiometers
Date and time
Light extinction and diffusion coefficients
Visible waveband radiance and irradiance measurements in the water column
Reference numbers
[Show series]
Date and time
Light extinction and diffusion coefficients
Visible waveband radiance and irradiance measurements in the water column
Reference numbers
[Hide series]

BODC idDate/TimeLocationDoc.
8627132008-03-14 11:00  — 2008-04-16 10:30 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 862713
8628172008-03-14 11:00  — 2008-04-16 10:30 53° 32' 1" N  3° 21' 29" W  View metadata report for BODC series reference number 862817
Discrete samples 
30  CTD frame plus rosette samplerRaw suspended particulate material optical sensor output
Phosphate concentration parameters in the water column
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Electrical conductivity of the water column
Phaeopigment concentrations in the water column
Raw fluorometer output
Silicate concentration parameters in the water column
Ammonium concentration parameters in the water column
Dissolved oxygen parameters in the water column
Nitrate concentration parameters in the water column
Temperature of the water column
Concentration of suspended particulate material in the water column
Raw light meter output
Salinity of the water column
Nitrite concentration parameters in the water column
Chlorophyll pigment concentrations in the water column
4  Sample taken from ship's non-toxic supplySalinity of the water column