RRS John Murray JM2B/81

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS John Murray (74MJ)
Cruise identifierJM2B/81
Cruise period1981-03-25 — 1981-03-27
Port of departurePlymouth, United Kingdom
Objectives1) To study the relationships between light, chlorophyll, primary production and flourescence.

2) To provide 'sea truth' data for the Undulating Oceanographic Recorder on the P R Route.
Chief scientistMichael B Jordan (Institute of Marine Environmental Research, Plymouth)
Cruise reportRRS John Murray JM2B/81 cruise report john_murray2b_81.pdf (0.06 MB) 
Ocean/sea areas 
GeneralEnglish Channel
Irish Sea and St. George's Channel
Bay of Biscay
Track chartsRRS John Murray JM2B/81 cruise track — trk2566.html
Physical oceanography 
Surface measurements underway (T,S)Description: cont.over 60 nm
CTD stationsQuantity: number of stations = 7
Optics (eg underwater light levels)Quantity: number of stations = 7
Chemical oceanography 
NitrateDescription: cont.over 60 nm
Biology and fisheries 
Primary productivityDescription: cont.over 60 nm
PhytoplanktonQuantity: number of stations = 7
Description: identification,distribution