RRS Challenger CH14A/75

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH14A/75
Cruise period1975-11-07 — 1975-11-12
Port of departureDunstaffnage, United Kingdom
Port of returnDunstaffnage, United Kingdom
ObjectivesThe objectives of this cruise were:
1. Work the Rockall via Anton Dohrn Seamount (Ellett Line) hydrographic section. Accomplished.
2. Nutrient sampling using a submersible pump at stations across the Scottish and Rockall shelf edges. Accomplished.
3. Collection of shelf sediment Shipek Grab samples for Aberystwyth University. Accomplished.
4. Work additional STD stations across the Scottish shelf edge. St. Kilda shelf-edge section worked.
5. Collection of large-volume water samples for radio-caesium measurements. Accomplished
6. Near real-time supply of temperature profiles to the Met Office. Accomplished.
Chief scientistDavid J Ellett (Scottish Marine Biological Association)
Cruise reportRRS Challenger CH14A/75 cruise report ch14a_75.pdf (0.09 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
North East Atlantic Ocean (limit 40W)
SpecificRockall, Malin Shelf, Anton Dohrn Seamount
Track chartsRRS Challenger CH14A/75 cruise track — trk1478a.html
Physical oceanography 
Water bottle stationsQuantity: number of stations = 58
Description: 21 T surface 56 S surface
CTD stationsQuantity: number of stations = 58
Chemical oceanography 
NitrateQuantity: number of stations = 24
Description: profiles
SilicateQuantity: number of stations = 24
Description: profiles
RadioactivityQuantity: number of samples = 10
Description: Cs137 surface samples
Geology and geophysics 
GrabQuantity: number of samples = 32