RRS Challenger CH6B/81
Cruise summary report
|Ship name (ship code)||RRS Challenger (74CH)|
|Cruise period||1981-04-16 — 1981-04-25|
|Port of departure||Stornoway, United Kingdom|
|Port of return||Ardrossan, United Kingdom|
|Objectives||The objectives of this cruise were:
(1) To service the IOS current meter moorings NE of Rockall (I1-I4) and retrieve and experimental mooring deployed at 56° 49 min N, 9° 16 min W. Accomplished.
(2) To re-lay the corrosion potential current meter mooring off South Uist. Accomplished.
(3) To measure chlorophyll concentrations over the shelf and shelf-edge. Accomplished.
(4) To work CTD sections across the shelf and shelf-edge. Five sections were worked from the full Rockall via Anton Dohrn Seamount (Ellett Line) section in the south northwards to a section from off the Butt of Lewis to 60N, 10W.
|Chief scientist||Roy Bowers (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|
|Surface measurements underway (T,S)|
|Water bottle stations||Description: S surface only|
|CTD stations||Quantity: number of stations = 58|
|Current meters||Quantity: number of stations = 4|
Description: ios stations;4 moorings with 11 c.m.recovered;4 deployed;195 days
|Other physical oceanographic measurements||Quantity: number of deployments = 1|
Description: corrosion potential c.m.deployed
|Biology and fisheries|
|Phytoplankton pigs (eg chlorophyll, fluorescence)||Quantity: number of samples = 32|
Description: plus continuous surface chlorophyll measurements throughout the cruise