Cruise inventory

RRS John Murray JM1/76 (B/1/76)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM1/76 (B/1/76)
Cruise period1976-01-09 — 1976-01-15
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
ObjectivesBristol Channel survey.
1. To measure rates of primary and secondary production.
2. To investigate dissolved inorganic and organic nutrients.
Chief scientistIan Joint (Institute of Marine Environmental Research, Plymouth)
Cruise reportRRS John Murray JM1/76 (B/1/76) cruise report john_murray1_76.pdf — access key 'C' (0.10 MB) 
Ocean/sea areas 
GeneralBristol Channel
Track chartsRRS John Murray JM1/76 (B/1/76) cruise track — trk1544.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 6
Description: surface only
CTD stationsQuantity: number of stations = 6
Transparency (eg transmissometer)Quantity: number of stations = 6
Chemical oceanography 
PhosphateQuantity: number of stations = 6
Total - PQuantity: number of stations = 6
NitrateQuantity: number of stations = 6
NitriteQuantity: number of stations = 6
SilicateQuantity: number of stations = 6
Suspended matterQuantity: number of stations = 6
Biology and fisheries 
Primary productivityQuantity: number of stations = 6
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 6
Particulate organic matter (inc POC, PON)Quantity: number of stations = 6
Dissolved organic matter (inc DOC)Quantity: number of stations = 6
ZooplanktonQuantity: number of stations = 6
Description: food chain energy transfers
ZoobenthosQuantity: number of stations = 2
Other biological/fisheries measurementQuantity: number of stations = 6
Description: ATP-ADP-AMP concentrations
Data held at BODC 
Discrete samples 
249  General station with STD/bottles/additional instrumentsChlorophyll pigment concentrations in water bodies
Salinity of the water column
Concentration of suspended particulate material in the water column
Dissolved organic carbon concentration in the water column
Temperature of the water column
Phaeopigment concentrations in the water column