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RRS Challenger CH2/81

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH2/81
Cruise period1981-01-26 — 1981-02-04
StatusCompleted
Port of departureDunstaffnage, United Kingdom
Port of returnBarry, United Kingdom
ObjectivesThe objectives of this cruise were:
(1) To service current meter moorings at stations M, (deep water: 57° 18 min N, 10° 23 min W) and R (shelf: 57N, 9W) and re-lay the mooring at F (deep water: 57.5N, 12.25W. Mooring at R recovered and re-laid: mooring at M recovered: no work at F.
(2) To work the DML Rockall via Anton Dohrn Seamount (Ellett Line) CTD section and other sections across the Rockall Channel. Stations R (shelf) to M (deep water between the slope and the seamount) of the primary section worked plus a section across the shelf west of South Uist.
(3) To deploy a corrosion potential current meter mooring off South Uist. Accomplished.
(4) To collect large-volume surface water samples for radiocaesium analysis, accompanied by CTD profiles, at stations across the Scottish continental shelf. Accomplished with CTD profiles at all but one station.
Chief scientistDavid J Ellett (Scottish Marine Biological Association)
Cruise reportRRS Challenger CH2/81 cruise report ch2_81.pdf (0.15 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificNorth Atlantic
Track chartsRRS Challenger CH2/81 cruise track — trk2739.html
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of samples = 16
Description: surface only
CTD stationsQuantity: number of stations = 21
Current metersQuantity: number of stations = 2
Description: recovered after 114d and relaid;after 112d
Other physical oceanographic measurementsQuantity: number of deployments = 1
Description: corrosion potential c.m.
Chemical oceanography 
RadioactivityDescription: surface water samples collected for radio-caesium analysis.