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Cruise inventory

RRS John Murray JM4/75 (B/2/75)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM4/75 (B/2/75)
Cruise period1975-02-07 — 1975-02-12
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
ObjectivesBristol Channel survey
Chief scientistWilliam W Brown (Institute of Marine Environmental Research, Plymouth)
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
Track chartsRRS John Murray JM4/75 (B/2/75) cruise track — trk1343.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 76
CTD stationsQuantity: number of stations = 76
Transparency (eg transmissometer)Quantity: number of stations = 25
Chemical oceanography 
PhosphateQuantity: number of stations = 76
Total - PQuantity: number of stations = 76
NitrateQuantity: number of stations = 76
NitriteQuantity: number of stations = 76
SilicateQuantity: number of stations = 76
Trace elementsQuantity: number of stations = 76
Suspended matterQuantity: number of stations = 76
Trace metalsQuantity: number of stations = 76
Biology and fisheries 
Primary productivityQuantity: number of measurements = 3
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 76
Particulate organic matter (inc POC, PON)Quantity: number of samples = 152
Dissolved organic matter (inc DOC)Quantity: number of stations = 76
PhytoplanktonQuantity: number of samples = 54
ZooplanktonQuantity: number of samples = 54
Other biological/fisheries measurementQuantity: number of measurements = 3
Description: Trace elements and organochlorines in zooplankton
Other meteorological measurementsQuantity: number of observations = 76
Description: sea and swell
Data held at BODC 
Discrete samples 
76  General station with STD/bottles/additional instrumentsParticulate total and organic carbon concentrations in the water column
Particulate total and organic nitrogen concentrations in the water column
Chlorophyll pigment concentrations in water bodies
Salinity of the water column
Concentration of suspended particulate material in the water column
Temperature of the water column
Phaeopigment concentrations in the water column
55  Lowestoft SamplerFish abundance in water bodies
Zooplankton taxonomy-related abundance per unit volume of the water column
Zooplankton non taxonomy-related abundance per unit volume of the water column
Fish morphology, age and physiology