Planned maintenance — 18th January 2018 12:00 to 22nd January 2018 09:00 [more]

Cruise inventory

RRS John Murray JM18/79 (B/7/79)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM18/79 (B/7/79)
Cruise period1979-11-02 — 1979-11-05
Port of departureBarry, United Kingdom
Port of returnBarry, United Kingdom
Objectives1) To continue the series of cruises to monitor the perfomance of the Bristol Channel to update ecosystem model GEMBASE

2) To collect a series of large volume water samples from the Port Talbot to Scarweather Bank area for bioassay experiments

3) To collect sediment cores for the study of Copepod eggs
Chief scientistMichael B Jordan (Institute of Marine Environmental Research, Plymouth)
Cruise reportRRS John Murray JM18/79 (B/7/79) cruise report john_murray18_79.pdf — access key 'C' (0.05 MB) 
Ocean/sea areas 
GeneralBristol Channel
Track chartsRRS John Murray JM18/79 (B/7/79) cruise track — trk2311.html
Physical oceanography 
Surface measurements underway (T,S)Description: continuous recording,240 miles approx.
Transparency (eg transmissometer)Description: continuous recording,240 miles approx.
Chemical oceanography 
NitrateDescription: continuous recording,240 miles approx.
Suspended matterDescription: continuous recording,240 miles approx.
Biology and fisheries 
Eggs and larvae
Data held at BODC 
Discrete samples 
178  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
Nitrate concentration parameters in the water column
Temperature of the water column
Phaeopigment concentrations in the water column
Nitrite concentration parameters in the water column