Cruise inventory

RRS Challenger CH77

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH77
Cruise period1991-04-05 — 1991-04-20
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
PurposeResearch
ObjectivesBiogeochemical cruise to study amd model the flux of material and water. Part of the Anglo-French programme FLUXMANCHE
Chief scientistSimon Boxall (University of Southampton Department of Oceanography)
ProjectFLUXMANCHE
Coordinating bodyFLUXMANCHE Chief coordinator, Dr. L. Cabioch, Station Biologique, Roscoff
Ocean/sea areas 
GeneralEnglish Channel
SpecificEastern English Channel, Dover Straits
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 2000
Water bottle stationsQuantity: number of profiles = 81
Description: General Oceanics Multisampler, top & near bottom samples
CTD stationsQuantity: number of deployments = 150
Description: NBIS
Transparency (eg transmissometer)Quantity: number of deployments = 150
Description: NBIS
Transparency (eg transmissometer)Quantity: track kilometres = 2000
Optics (eg underwater light levels)Quantity: number of measurements = 18
Description: spectra from sea surface using spectron radiometer
Optics (eg underwater light levels)Quantity: number of deployments = 150
Description: NBIS
Current metersQuantity: number of stations = 5
Description: 10 deployed, 4 recovered
Current profiler (eg ADCP)Quantity: track kilometres = 2000
Description: RDI ADCP
Other physical oceanographic measurementsQuantity: number of flights = 2
Description: SLAR - plane over Dover Straits and Cap la Hague
Other physical oceanographic measurementsQuantity: number of flights = 2
Description: line spectro: 2 states tide - plane over Dover Straits
Chemical oceanography 
OxygenQuantity: number of deployments = 150
Description: NBIS
PhosphateQuantity: number of profiles = 67
NitrateQuantity: number of profiles = 67
NitriteQuantity: number of profiles = 67
AmmoniaQuantity: number of profiles = 67
SilicateQuantity: number of profiles = 67
IsotopesQuantity: number of profiles = 8
Description: carbon isotope
Contamination 
Suspended matterQuantity: number of profiles = 1
Description: 2 'SeaStar' pump, surface & at 5m
Suspended matterQuantity: number of profiles = 81
Description: General Oceanics Multisampler (10 litre teflon lined)
Trace metalsQuantity: number of samples = 11
Description: grab samples
Trace metalsQuantity: number of profiles = 1
Description: 2 'SeaStar' pump, surface & at 5m
Trace metalsQuantity: number of profiles = 67
Description: Al,Cd,Co,Cu,Mn,Fe,Ni,Pb,Zn,top & bottom samples
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of profiles = 81
Description: General Oceanics Multisampler (10 litre teflon lined)
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: track kilometres = 2000
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of deployments = 150
Description: NBIS
Particulate organic matter (inc POC, PON)Quantity: number of profiles = 6
Description: trace organics
Dissolved organic matter (inc DOC)Quantity: number of profiles = 6
Description: trace organics
Meteorology 
Incident radiationQuantity: track kilometres = 2000
Description: subsurface underway measurements of incident radiation
Occasional standard measurementsQuantity: number of observations = 150
Description: Met. Observations at each CTD station
Routine standard measurementsQuantity: track kilometres = 2000
Description: every 3 hours
Geology and geophysics 
GrabQuantity: number of samples = 11
Description: for particle size and chemical analysis
Single-beam echosoundingQuantity: track kilometres = 2000
Description: Underway PES bathymetry
Moorings, landers, buoys 
Physical oceanography 
Current meters50° 30' 0" N  1° 55' 59" W — (CM1) 2 Aanderaa, T,S,P sensors
Current meters49° 45' 0" N  1° 55' 59" W — (CM3), T,S,P sensors
Current meters50° 49' 59" N  1° 33' 0" E — laid/rec (6 days), CM5, T,S,P sensors
Current meters50° 4' 59" N  1° 55' 59" W — (CM2) 2 Aanderaa, T,S,P sensors
Current meters50° 46' 0" N  1° 28' 59" W — laid/rec (6 days), CM4, T,S,P sensors