Cruise inventory

RRS John Murray JM9/76 (B/6/76)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM9/76 (B/6/76)
Cruise period1976-07-15 — 1976-07-20
StatusCompleted
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
PurposeResearch
ObjectivesBristol Channel survey:
1) To measure the rates of primary and secondary production
2) To measure spatial variability of zoo plankton
3) To measure distribution and concentration of inorganic and organic nutrients
Chief scientistIan Joint (Institute of Marine Environmental Research, Plymouth)
Cruise reportRRS John Murray JM9/76 (B/6/76) cruise report john_murray9_76.pdf — access key 'C' (0.11 MB) 
Ocean/sea areas 
GeneralIrish Sea and St. George's Channel
Track chartsRRS John Murray JM9/76 (B/6/76) cruise track — trk1643.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: number of stations = 5
Description: 5 stations + 300nm
Chemical oceanography 
PhosphateQuantity: number of stations = 5
Description: 5 stations + 300nm
NitrateQuantity: number of stations = 5
Description: 5 stations + 300nm
NitriteQuantity: number of stations = 5
Description: 5 stations + 300nm
Contamination 
Suspended matterQuantity: number of stations = 5
Biology and fisheries 
Primary productivityQuantity: number of stations = 5
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 5
Particulate organic matter (inc POC, PON)Quantity: number of stations = 5
Dissolved organic matter (inc DOC)Quantity: number of stations = 5
PhytoplanktonQuantity: number of stations = 5
ZooplanktonQuantity: number of stations = 5
Description: identification,distribution
Pelagic bacteria/micro-organismsQuantity: number of stations = 5
ZoobenthosDescription: biomass determination
Data held at BODC 
Discrete samples 
610  General station with STD/bottles/additional instrumentsChlorophyll pigment concentrations in water bodies
Salinity of the water column
Dissolved organic carbon concentration in the water column
Concentration of suspended particulate material in the water column
Temperature of the water column
Phaeopigment concentrations in the water column