RRS Challenger CH6A/81
Cruise summary report
|Ship name (ship code)||RRS Challenger (74CH)|
|Cruise period||1981-04-06 — 1981-04-15|
|Port of departure||Barry, United Kingdom|
|Port of return||Stornoway, United Kingdom|
|Objectives||The objectives of this cruise were:
(1) To service current meter moorings at station R (shelf: 57N, 9W) and re-lay current meter moorings at stations M (deep water: 57° 18 min N, 10° 23 min W) and F (deep water: 57.5N, 12.25W). Accomplished.
(2) To sample benthos in the southern and central Rockall Trough. Successful epibenthic sled and Agassiz trawl hauls at the SMBA permanent station and station M.
(3) To recover the corrosion potential current meter mooring off South Uist. Accomplished.
(4) To work the Rockall via Anton Dohrn Seamount (Ellett Line) CTD section. Stations R (shelf) to O (deep water between the slope and the seamount) of the section worked. Additional CTD sections on the shelf worked from Loch Moidart past Oigh Sgeir and at right angles into Loch Bracadale, Skye.
(5) To determine bottom topography at future mooring sites to the west of Porcupine Bank. Accomplished.
(6) 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 on all but one station.
|Chief scientist||David J Ellett (Scottish Marine Biological Association)|
|Cruise report||(0.25 MB)|
|General||Inner Seas off the West Coast of Scotland|
North East Atlantic Ocean (limit 40W)
|Specific||Rockall Channel/ Scottish Cont. Shelf|
|CTD stations||Quantity: number of stations = 29|
|Current meters||Quantity: number of stations = 1|
Description: mooring(2 c.m.)recovered and not relaid;36 days
|Other physical oceanographic measurements||Quantity: number of deployments = 75|
Description: one corrosion potential c.m.
|Radioactivity||Quantity: number of samples = 10|
|Biology and fisheries|
|Zooplankton||Quantity: number of hauls = 1|
|Zoobenthos||Quantity: number of hauls = 2|