RRS Shackleton S5/79

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Shackleton (74SF)
Cruise identifierS5/79
Cruise period1979-06-19 — 1979-07-02
Port of departureArdrossan, United Kingdom
Port of returnBarry, United Kingdom
ObjectivesThe aims of this cruise were:
(1) To service the shelf current meter mooring at 57N, 9W. Accomplished.
(2) To lay current meter moorings in the Little Minch for the duration of the cruise. Accomplished, but one meter suffered from jellyfish fouling.
(3) Make a comprehensive CTD survey of the shelf to the west of Scotland. CTD sections worked northwards on the shelf from the North Channel to Cape Wrath, plus five sections from the slope to the west coasts of the islands..
(4) To make CTD observations to examine the paths of the Norwegian Sea deep water overflow into the northern Rockall Channel. Stations worked between the shelf edge and the Ymir Ridge.
(5) To work the Rockall via Anton Dohrn Seamount (Ellett Line) CTD section. Not done due to lack of time.
(6) To lay two fouling study moorings to the west of South Uist.
(7) To collect large-volume surface water samples for radiocaesium analysis, accompanied by CTD profiles, at stations across the Scottish continental shelf. Sampling accomplished at all ten stations, but CTDs only possible on the five westernmost stations.
(8) To send near real-time temperature profiles to the Met Office. Accomplished.
Chief scientistDavid J Ellett (Scottish Marine Biological Association)
Cruise reportRRS Shackleton S5/79 cruise report shackleton5_79.pdf (0.29 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
Track chartsRRS Shackleton S5/79 cruise track — trk2343.html
Physical oceanography 
Water bottle stationsQuantity: activity duration in days = 12
Description: Surface samples collected for salinity measurements.
CTD stationsQuantity: number of profiles = 109
Description: noisy salinity where maximum cast depth >200m
Current metersQuantity: number of recoveries = 6
Description: 2 moorings (47 days) laid by Challenger recovered. 4 short-term (8 days) moorings deployed during the cruise recovered.
Current metersQuantity: number of deployments = 6
Description: two long-term and four short-term moorings deployed.
Chemical oceanography 
RadioactivityQuantity: number of samples = 10
Description: large-volume surface water samples for radio-caesium.
Biology and fisheries 
Other biological/fisheries measurementQuantity: number of deployments = 3
Description: fouling panels for collection of borers and foulers