RV Cirolana CIR7/81

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Cirolana (74CZ)
Cruise identifierCIR7/81
Cruise period1981-07-08 — 1981-08-05
Port of departureGrimsby, United Kingdom
Port of returnGrimsby, United Kingdom
Objectives1. To continue the examination of the distribution of caesium-137, caesium-134, strontium-90, plutonium-238, plutonium-239/240 and americium-241 in seawater.
2. To continue work on the examination of the oxidation states of plutonium and americium, om seawater.
3. To determine the suspended load in seawter especially at stations where samples were to be analysed for plutonium.
4. To collect large volume samples of surface seawater in 6 areas north of 70ºN, and initially prepare on board for the determination of 134Cs and 137Cs by Woods Hole Oceanographic Institute.
5. To retain samples of suspended load from surface and bottom water for Dr R K O'Nions (University of Cambridge).

All aims were achieved but with some modification and additions to the original propsed programme.
Chief scientistDouglas F Jefferies (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Cirolana CIR7/81 cruise report ci7_81.pdf (0.17 MB) 
Ocean/sea areas 
GeneralBarents Sea
North Sea
Greenland Sea
Norwegian Sea
SpecificNorth Sea,Norwegian Sea,Barents Sea,W.Spitzbergen,N.E.Greenland
Track chartsRV Cirolana CIR7/81 cruise track — trk2649.html
Physical oceanography 
Surface measurements underway (T,S)Description: T only
Water bottle stationsQuantity: number of stations = 190
Description: 190 S surface
CTD stationsQuantity: number of stations = 95
Description: CTD was run and plots of salinity, temperature and in situ density were obtained by use of the Hewlett Packard computer.
Chemical oceanography 
RadioactivityQuantity: number of stations = 190
Description: surface and depth samples for analysis