Cruise inventory

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
StatusCompleted
Port of departurePlymouth, United Kingdom
PurposeResearch
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 — access key 'C' (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
Measurements 
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