Cruise inventory

RRS John Murray JM7A/75 (B/6/75)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM7A/75 (B/6/75)
Cruise period1975-05-08 — 1975-05-14
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
ObjectivesBristol Channel survey
Chief scientistIan Joint (Institute of Marine Environmental Research, Plymouth)
Ocean/sea areas 
GeneralBristol Channel
Track chartsRRS John Murray JM7A/75 (B/6/75) cruise track — trk1424.html
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of stations = 4
Water bottle stationsQuantity: number of stations = 10
Description: surface only
Transparency (eg transmissometer)Quantity: number of stations = 4
Chemical oceanography 
PhosphateQuantity: number of stations = 4
Total - PQuantity: number of stations = 4
NitrateQuantity: number of stations = 4
NitriteQuantity: number of stations = 4
SilicateQuantity: number of stations = 4
Suspended matterQuantity: number of stations = 4
Biology and fisheries 
Primary productivityQuantity: number of stations = 11
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 11
Particulate organic matter (inc POC, PON)Quantity: number of stations = 11
Biochemical measurements (eg lipids, amino acids)Quantity: number of stations = 11
PhytoplanktonQuantity: number of stations = 11
ZooplanktonQuantity: number of stations = 11
Description: physiology
Pelagic bacteria/micro-organismsQuantity: number of stations = 11
ZoobenthosQuantity: number of stations = 1
Description: identification,description of communities
Geology and geophysics 
DredgeQuantity: number of deployments = 1
GrabQuantity: number of samples = 9
Description: chemical analysis of sediments
Data held at BODC 
Discrete samples 
11  General station with STD/bottles/additional instrumentsChlorophyll pigment concentrations in water bodies
Salinity of the water column
Temperature of the water column
Phaeopigment concentrations in the water column