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RRS Discovery D278

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD278
Cruise period2004-03-19 — 2004-03-30
StatusCompleted
Port of departureFreeport, Bahamas
Port of returnFreeport, Bahamas
ObjectivesPrincipally a mooring deployment cruise in the western North Atlantic Ocean at 26.5degN - six moorings deployed. This was followed by a hydrographic survey at the Abaco Western Boundary Array during which sixteen CTD casts were measured. Ship returned to Freeport, Grand Bahama, where the cruise ended.
Chief scientistStuart A Cunningham (Southampton Oceanography Centre)
ProjectRAPID
Coordinating bodyNERC
Cruise reportRRS Discovery D278 cruise report d277_d278.pdf (4.44 MB) 
Ocean/sea areas 
GeneralNorth West Atlantic Ocean (limit 40W)
SpecificNorth Atlantic western boundary
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 11
Description: Sea surface hydrography underway measurements
Surface measurements underway (T,S)Quantity: activity duration in days = 11
Description: Autoflux. Measurement of air-sea C0**2 flux.
Surface measurements underway (T,S)Quantity: activity duration in days = 11
Description: Discrete sampling from the non-toxic water supply for calibration of underway temperature/salinity
Water bottle stationsQuantity: activity duration in days = 11
Description: Discrete sampling from CTD bottles for calibration of the CTD salinity
CTD stationsQuantity: number of stations = 16
Description: SeaBird 9/11. 16 CTD casts (including 1 test cast). Parameters: temperature, salinity, pressure, oxygen, fluorescence, beam attenuation, beam transmission.
Current metersQuantity: number of stations = 3
Description: Current meters
Chemical oceanography 
Carbon dioxideQuantity: activity duration in days = 11
Description: Autoflux. Measurement of air-sea C0**2 flux.
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 11
Description: Surfmet. Air temp, humidity, wind speed/direction, TIR, PAR, incoming long wave radiation.
Moorings, landers, buoys 
Physical oceanography 
CTD stations26° 30' 1" N  76° 35' 57" W — Site: WBH2#1. Water depth: 4800m. Deployment: 25/03/2004. Instruments: 6 CTDs at 4350, 4450, 4550, 4700, 4750, 3837m; WLR at 4799m.
CTD stations26° 30' 55" N  76° 44' 27" W — Site: WB2#1. Water depth: 3898m. Deployment: 26/03/2004. Instruments: 14 CTDs at 104, 154, 304, 400, 600, 800, 1000, 1200, 1600, 2000, 2500, 3000, 3500, 3733m; 7 current meters at 154, 400, 800, 1200, 2000, 3000, 3876m; WLR at 3895m.
CTD stations26° 30' 1" N  76° 41' 53" W — Site: WBH1#1. Water depth: 4287m. Deployment: 25/03/2004. Instruments: 5 CTDs at 3837, 3937, 4037, 4187, 4237m; WLR at 4286m.
CTD stations26° 29' 26" N  76° 2' 35" W — Site: WB4#1. Water depth: 4790m. Deployment: 23/03/2004. Instruments: 2 current meters at 50 and 4775m; MMP at 4475m; CTD at 4775m; WLR at 4789m.
Current meters26° 29' 26" N  76° 2' 35" W — Site: WB4#1. Water depth: 4790m. Deployment: 23/03/2004. Instruments: 2 current meters at 50 and 4775m; MMP at 4475m; CTD at 4775m; WLR at 4789m.
Current meters26° 30' 55" N  76° 44' 27" W — Site: WB2#1. Water depth: 3898m. Deployment: 26/03/2004. Instruments: 14 CTDs at 104, 154, 304, 400, 600, 800, 1000, 1200, 1600, 2000, 2500, 3000, 3500, 3733m; 7 current meters at 154, 400, 800, 1200, 2000, 3000, 3876m; WLR at 3895m.
Current meters26° 30' 9" N  76° 48' 49" W — Site: WB1#1. Water depth: 1382m. Deployment: 27/03/2004. Instruments: 9 current meters at 50, 100, 250, 400, 600, 800, 1000, 1200, 1350m; WLR at 1380m.
Current meters26° 30' 1" N  76° 41' 53" W — Site: WBH1#1. Water depth: 4287m. Deployment: 25/03/2004. Instruments: 5 CTDs at 3837, 3937, 4037, 4187, 4237m; WLR at 4286m.
Current profiler (eg ADCP)26° 29' 26" N  76° 2' 35" W — Site: WB4#1. Water depth: 4790m. Deployment: 23/03/2004. Instruments: 2 current meters at 50 and 4775m; MMP at 4475m; CTD at 4775m; WLR at 4789m.
Current profiler (eg ADCP)26° 32' 21" N  76° 52' 51" W — Site: WBADCP#1. Water depth: 395m. Deployment: 20/03/2004. Instruments: ADCP at 394m; WLR at 394m.
Sea level (inc. bot. press., inverted echosounder)26° 29' 26" N  76° 2' 35" W — Site: WB4#1. Water depth: 4790m. Deployment: 23/03/2004. Instruments: 2 current meters at 50 and 4775m; MMP at 4475m; CTD at 4775m; WLR at 4789m.
Sea level (inc. bot. press., inverted echosounder)26° 30' 55" N  76° 44' 27" W — Site: WB2#1. Water depth: 3898m. Deployment: 26/03/2004. Instruments: 14 CTDs at 104, 154, 304, 400, 600, 800, 1000, 1200, 1600, 2000, 2500, 3000, 3500, 3733m; 7 current meters at 154, 400, 800, 1200, 2000, 3000, 3876m; WLR at 3895m.
Sea level (inc. bot. press., inverted echosounder)26° 30' 9" N  76° 48' 49" W — Site: WB1#1. Water depth: 1382m. Deployment: 27/03/2004. Instruments: 9 current meters at 50, 100, 250, 400, 600, 800, 1000, 1200, 1350m; WLR at 1380m.
Sea level (inc. bot. press., inverted echosounder)26° 32' 21" N  76° 52' 51" W — Site: WBADCP#1. Water depth: 395m. Deployment: 20/03/2004. Instruments: ADCP at 394m; WLR at 394m.
Sea level (inc. bot. press., inverted echosounder)26° 30' 1" N  76° 35' 57" W — Site: WBH2#1. Water depth: 4800m. Deployment: 25/03/2004. Instruments: 6 CTDs at 4350, 4450, 4550, 4700, 4750, 3837m; WLR at 4799m.
Other physical oceanographic measurements26° 29' 26" N  76° 2' 35" W — Site: WB4#1. Water depth: 4790m. Deployment: 23/03/2004. Instruments: 2 current meters at 50 and 4775m; MMP at 4475m; CTD at 4775m; WLR at 4789m.
Data held at BODC Get data
Discrete samples 
16  CTD frame plus rosette samplerDensity of the water column
Transmittance and attenuance of the water column
Chlorophyll pigment concentrations in water bodies
Salinity of the water column
Temperature of the water column
9  Instrument mooring
38  Sample taken from ship's non-toxic supplySalinity of the water column