Cruise inventory

RRS John Murray JM6/79 (B/3/79)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM6/79 (B/3/79)
Cruise period1979-05-17 — 1979-05-20
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
ObjectivesBristol Channel survey continuing a series of cruises to monitor the performance of the area to update the validation of the ecosystem model GEMBASE. To collect water and sediment samples from the Scarweather Sands and Kenfig Patches to study the heavy metal distribution using bioassay and analytical chemistry techniques.
Chief scientistMichael B Jordan (Institute of Marine Environmental Research, Plymouth)
Cruise reportRRS John Murray JM6/79 (B/3/79) cruise report john_murray6_79.pdf — access key 'C' (0.08 MB) 
Ocean/sea areas 
GeneralBristol Channel
Track chartsRRS John Murray JM6/79 (B/3/79) cruise track — john_murray6_79track.pdf (0.02 MB) 
Physical oceanography 
Surface measurements underway (T,S)Description: continuous surface measurements.240 miles approx.
Transparency (eg transmissometer)Description: continuous surface measurements.240 miles approx.
Chemical oceanography 
NitrateDescription: continuous surface measurements.240 miles approx.
Suspended matterDescription: continuous surface measurements.240 miles approx.
Trace metalsQuantity: number of samples = 17
Bottom depositsQuantity: number of samples = 17
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 88
PhytoplanktonQuantity: number of stations = 26
ZooplanktonQuantity: number of stations = 26
Description: identification,distribution,monitoring
Geology and geophysics 
GrabQuantity: number of samples = 17
Description: chemical analysis of sediments
Data held at BODC 
Discrete samples 
203  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
Temperature of the water column
Phaeopigment concentrations in the water column