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BODC Cruise Metadata Report for RRS Discovery (74E3) cruise D368

Introduction

This report collates information from the BODC cruise inventory and oceanographic databases. It presents

Cruise Inventory Information

Long name RRS Discovery (74E3) cruise D368
Short name D368
Objectives and Narrative CTD stations on 20W line from 50N to 20N, following the old WOCE line A16N

Physical measurements (CTDO and LADCP) and discrete samples for salt, oxygen, inorganic nutrients and alkalinity/inorganic carbon

Underway ADCP, surface ocean measurements, surface meteorology measurements.

Contribution to GO-SHIP sustained hydrography program.

Partial repeat of a hydrographic line last occupied in 2003.
Ship RRS Discovery
Departure Port Liverpool, United Kingdom
Departure Date 2011-07-15
Arrival Port Santa Cruz de Tenerife, Spain
Arrival Date 2011-08-04
Principal Scientist(s) Brian A King (National Oceanography Centre, Southampton)
Responsible Organisation Polytechnic South West Institute of Marine Studies
Associated Project(s) GO-SHIP
IHB Sea Areas Visited North East Atlantic Ocean (limit 40W)
Marsden Squares Visited 110/111/146/147/74/75
Work Area Description North Atlantic Ocean, 20W, 20N to 50N
Work Area Bounding Polygon 20N,30W; 50N,30W; 50N,10W; 20N,10W; 20N,30W
Southern Limit 20N
Northern Limit 50N
Western Limit 30W
Eastern Limit 10W

Cruise Inventory Datasets

Physical oceanography  
CTD stations Quantity: number of stations = 29
Description: Sea water velocities using a RDI WH monitor 300 kHz lowered acoustic doppler current profiler (LADCP)  
CTD stations Quantity: number of stations = 29
Description: Temperature, salinity, pressure, transmittance, fluorescence, oxygen and back-scatter using a SeaBird 911+ stainless steel CTD unit. Station depths ranged from 3404-5329 metres  
Current profiler (eg ADCP) Quantity: activity duration in days = 20
Description: Water velocities using a 75 kHz vessel mounted acoustic doppler current profiler (VMADCP)  
Current profiler (eg ADCP) Quantity: number of stations = 29
Description: Sea water velocities using a RDI WH monitor 300 kHz lowered acoustic doppler current profiler (LADCP)  
Neutrally buoyant floats Quantity: number of deployments = 3
Description: 3 PROVOR floats deployed for French Argo program  
Optics (eg underwater light levels) Quantity: activity duration in days = 20
Description: Underway salinity, temperature, transmittance and fluorescence from SurfMet system  
Subsurface temperature and salinity measurements Quantity: activity duration in days = 20
Description: Water velocities using a 75 kHz vessel mounted acoustic doppler current profiler (VMADCP)  
Surface measurements underway (T,S) Quantity: activity duration in days = 20
Description: Underway salinity, temperature, transmittance and fluorescence from SurfMet system  
Surface measurements underway (T,S) Quantity: activity duration in days = 20
Description: Discrete salinity samples from underway supply, analysed using an autosalinometer. Used to calibrate the underway salinity sensor situated in the SurfMet system.  
Transparency (eg transmissometer) Quantity: activity duration in days = 20
Description: Underway salinity, temperature, transmittance and fluorescence from SurfMet system  
Transparency (eg transmissometer) Quantity: number of stations = 29
Description: Temperature, salinity, pressure, transmittance, fluorescence, oxygen and back-scatter using a SeaBird 911+ stainless steel CTD unit. Station depths ranged from 3404-5329 metres  
Water bottle stations Quantity: number of stations = 29
Description: Discrete water samples collected from CTD bottles to determine dissolved inorganic carbon (DIC) concentration and total alkalinity using coulometry and potentiometry analysis  
Water bottle stations Quantity: number of stations = 29
Description: Discrete inorganic nutrients (N, P & Si) samples from CTD bottles, analysed using automated segmented flow analysis with colourimetric detection.  
Water bottle stations Quantity: number of stations = 29
Description: Discrete salinity samples from CTD bottles, analysed using an autosalinometer. Used to calibrate CTD salinity  
Water bottle stations Quantity: number of stations = 29
Description: Water collected from depth for discrete samples using a SeaBird 911+ stainless steel CTD frame fitted with SBE 32, 24-way carousel and 24 x 10 L Niskin bottles. Station depths ranged from 3404-5329 metres  
Water bottle stations Quantity: number of stations = 29
Description: Discrete oxygen samples from CTD bottles, analysed using Winkler titration and Metrohm 794 Basic Tritrino titration unit. Used to calibrate CTD oxygen sensor.  
Chemical oceanography  
Alkalinity Quantity: number of stations = 29
Description: Discrete water samples collected from CTD bottles to determine dissolved inorganic carbon (DIC) concentration and total alkalinity using coulometry and potentiometry analysis  
Other chemical oceanographic measurements Quantity: number of stations = 29
Description: Discrete water samples collected from CTD bottles to determine dissolved inorganic carbon (DIC) concentration and total alkalinity using coulometry and potentiometry analysis  
Oxygen Quantity: number of stations = 29
Description: Discrete oxygen samples from CTD bottles, analysed using Winkler titration and Metrohm 794 Basic Tritrino titration unit. Used to calibrate CTD oxygen sensor.  
Phosphate Quantity: number of stations = 29
Description: Discrete inorganic nutrients (N, P & Si) samples from CTD bottles, analysed using automated segmented flow analysis with colourimetric detection.  
Silicate Quantity: number of stations = 29
Description: Discrete inorganic nutrients (N, P & Si) samples from CTD bottles, analysed using automated segmented flow analysis with colourimetric detection.  
Total - N Quantity: number of stations = 29
Description: Discrete inorganic nutrients (N, P & Si) samples from CTD bottles, analysed using automated segmented flow analysis with colourimetric detection.  
Biology and fisheries  
Pelagic bacteria/micro-organisms Quantity: number of stations = 15
Description: Water samples collected from CTD bottles and concentrated by filtration. Samples were frozen immediately at -80C and stored for further molecular characterisation of the bacterial and smallest phytoplankton communities.  
Phytoplankton Quantity: number of stations = 15
Description: Water samples collected from CTD bottles and concentrated by filtration. Samples were frozen immediately at -80C and stored for further molecular characterisation of the bacterial and smallest phytoplankton communities.  
Meteorology  
Routine standard measurements Quantity: activity duration in days = 20
Description: Underway atmospheric pressure, air temperature, air humidity, total irradiance (TIR), photosynthetic radiation (PAR), wind speed and wind direction from SurfMet system  
Geology and geophysics  
Single-beam echosounding Quantity: activity duration in days = 20
Description: Sea floor depth using a SIMRAD EA600  

Cruise Inventory Mooring/Buoy Operations

No information on datasets is currently available

Summary of BODC Data Holdings for the Cruise

National Oceanographic Database

Summary

# Series Instrument Description Parameters
1 Acoustic doppler current profiler Date and time
Horizontal platform movement
Horizontal spatial co-ordinates
Horizontal velocity of the water column (currents)
Reference numbers
Vertical spatial coordinates
28 Bottle station Nitrate concentration parameters in the water column
Phosphate concentration parameters in the water column
Quality control flags
Reference numbers
Silicate concentration parameters in the water column
Vertical spatial coordinates
28 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Dissolved oxygen parameters in the water column
Electrical conductivity of the water column
Optical backscatter
Reference numbers
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates
1 CTD/STD cast Chlorophyll pigment concentrations in water bodies
Density of the water column
Electrical conductivity of the water column
Optical backscatter
Reference numbers
Salinity of the water column
Temperature of the water column
Transmittance and attenuance of the water column
Vertical spatial coordinates

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

Full List

BODC Reference Instrument Description Date/Time Location  
1102030 Acoustic doppler current profiler 2011-07-15 11:58:50Z to 2011-08-04 03:46:11Z From 23° 19' N, 27° 8' W to 53° 34' N, 4° 10' W Click for more
1137496 CTD/STD cast 2011-07-19 10:09Z 48° 39' N, 17° 1' W Click for more
1137503 CTD/STD cast 2011-07-20 05:39Z 49° 0' N, 20° 0' W Click for more
1137515 CTD/STD cast 2011-07-20 20:49Z 48° 1' N, 19° 59' W Click for more
1137527 CTD/STD cast 2011-07-21 07:13Z 47° 0' N, 19° 59' W Click for more
1137539 CTD/STD cast 2011-07-21 16:52Z 45° 59' N, 20° 0' W Click for more
1137540 CTD/STD cast 2011-07-22 02:25Z 45° 0' N, 20° 0' W Click for more
1137552 CTD/STD cast 2011-07-22 12:45Z 44° 0' N, 20° 1' W Click for more
1137564 CTD/STD cast 2011-07-22 20:30Z 43° 0' N, 19° 59' W Click for more
1137576 CTD/STD cast 2011-07-23 06:02Z 42° 3' N, 20° 0' W Click for more
1137588 CTD/STD cast 2011-07-23 14:59Z 41° 0' N, 20° 0' W Click for more
1137607 CTD/STD cast 2011-07-24 00:20Z 39° 59' N, 19° 58' W Click for more
1137619 CTD/STD cast 2011-07-24 09:34Z 39° 0' N, 20° 0' W Click for more
1137620 CTD/STD cast 2011-07-24 19:02Z 38° 0' N, 20° 0' W Click for more
1137632 CTD/STD cast 2011-07-25 06:43Z 36° 50' N, 20° 0' W Click for more
1137644 CTD/STD cast 2011-07-25 16:00Z 36° 0' N, 20° 0' W Click for more
1137656 CTD/STD cast 2011-07-26 02:36Z 35° 0' N, 20° 33' W Click for more
1137668 CTD/STD cast 2011-07-26 13:07Z 34° 0' N, 21° 7' W Click for more
1137681 CTD/STD cast 2011-07-26 23:56Z 33° 0' N, 21° 41' W Click for more
1137693 CTD/STD cast 2011-07-27 10:44Z 32° 0' N, 22° 15' W Click for more
1137700 CTD/STD cast 2011-07-27 20:45Z 31° 0' N, 22° 48' W Click for more
1137712 CTD/STD cast 2011-07-28 07:19Z 30° 0' N, 23° 22' W Click for more
1137724 CTD/STD cast 2011-07-28 17:42Z 29° 0' N, 23° 55' W Click for more
1137736 CTD/STD cast 2011-07-29 08:38Z 28° 1' N, 24° 30' W Click for more
1137748 CTD/STD cast 2011-07-29 19:18Z 27° 0' N, 25° 3' W Click for more
1137761 CTD/STD cast 2011-07-30 06:10Z 26° 0' N, 25° 37' W Click for more
1137773 CTD/STD cast 2011-07-30 16:08Z 24° 59' N, 26° 11' W Click for more
1137785 CTD/STD cast 2011-07-31 02:22Z 24° 0' N, 26° 45' W Click for more
1137797 CTD/STD cast 2011-07-31 10:51Z 23° 20' N, 27° 8' W Click for more
1137804 CTD/STD cast 2011-08-03 23:39Z 28° 46' N, 16° 0' W Click for more
1851701 Bottle station 2011-07-20 05:39Z 49° 0' N, 20° 0' W Click for more
1851713 Bottle station 2011-07-20 20:49Z 48° 1' N, 19° 59' W Click for more
1851725 Bottle station 2011-07-21 07:13Z 47° 0' N, 19° 59' W Click for more
1851737 Bottle station 2011-07-21 16:52Z 45° 59' N, 20° 0' W Click for more
1851749 Bottle station 2011-07-22 02:25Z 45° 0' N, 20° 0' W Click for more
1851750 Bottle station 2011-07-22 14:36Z 44° 0' N, 20° 1' W Click for more
1851762 Bottle station 2011-07-22 20:30Z 43° 0' N, 19° 59' W Click for more
1851774 Bottle station 2011-07-23 06:02Z 42° 3' N, 20° 0' W Click for more
1851786 Bottle station 2011-07-23 14:59Z 41° 0' N, 20° 0' W Click for more
1851798 Bottle station 2011-07-24 00:20Z 39° 59' N, 19° 58' W Click for more
1851805 Bottle station 2011-07-24 09:34Z 39° 0' N, 20° 0' W Click for more
1851817 Bottle station 2011-07-24 19:02Z 38° 0' N, 20° 0' W Click for more
1851829 Bottle station 2011-07-25 06:43Z 36° 50' N, 20° 0' W Click for more
1851830 Bottle station 2011-07-25 16:00Z 36° 0' N, 20° 0' W Click for more
1851842 Bottle station 2011-07-26 02:36Z 35° 0' N, 20° 33' W Click for more
1851854 Bottle station 2011-07-26 13:07Z 34° 0' N, 21° 7' W Click for more
1851866 Bottle station 2011-07-26 23:56Z 33° 0' N, 21° 41' W Click for more
1851878 Bottle station 2011-07-27 10:44Z 32° 0' N, 22° 15' W Click for more
1851891 Bottle station 2011-07-27 20:45Z 31° 0' N, 22° 48' W Click for more
1851909 Bottle station 2011-07-28 07:19Z 30° 0' N, 23° 22' W Click for more
1851910 Bottle station 2011-07-28 17:42Z 29° 0' N, 23° 55' W Click for more
1851922 Bottle station 2011-07-29 08:38Z 28° 1' N, 24° 30' W Click for more
1851934 Bottle station 2011-07-29 19:18Z 27° 0' N, 25° 3' W Click for more
1851946 Bottle station 2011-07-30 06:10Z 26° 0' N, 25° 37' W Click for more
1851958 Bottle station 2011-07-30 16:08Z 24° 59' N, 26° 11' W Click for more
1851971 Bottle station 2011-07-31 02:22Z 24° 0' N, 26° 45' W Click for more
1851983 Bottle station 2011-07-31 10:51Z 23° 20' N, 27° 8' W Click for more
1851995 Bottle station 2011-08-03 23:39Z 28° 46' N, 16° 0' W Click for more

Project Database

# Events Gear Type Parameters Held
110 Sample taken from ship's non-toxic supply Salinity of the water column
58 CTD frame plus rosette sampler
Salinity of the water column
Dissolved oxygen parameters in the water column

Note: Parameter terms are taken from the BODC Parameter Discovery Vocabulary XML (SKOS)

References

Track Charts

Track Chart

Reports

Cruise Report