Cruise inventory

RRS Challenger CH12A/75

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH12A/75
Cruise period1975-08-26 — 1975-09-02
StatusCompleted
Port of departureDunstaffnage, United Kingdom
Port of returnDunstaffnage, United Kingdom
PurposeResearch
ObjectivesThe cruise had 6 objectives.
1. Recovery and relaying of a current meter mooring at 57N 9W.
2. Working the hydrographic sections to Anton Dohrn Seamount (Ellett Line) and Rockall and Rockall-Malin Head (Rosemary Bank to St Kilda also worked due to favourable conditions).
3. Using a submersible pump and autoanalyser for nutrient determinations along these sections.
4. Collecting Shipek grab samples of shelf sediments for Aberystwyth University.
5. Collecting large volume water samples for radio-caesium analysis by the Fisheries Radiobiological Laboratory.
6. Transmitting temperature profiles to the Met Office at Bracknell based on STD traces.
All objectives were successfully achieved.
Chief scientistDavid J Ellett (Scottish Marine Biological Association)
Cruise reportRRS Challenger CH12A/75 cruise report ch12a_75.pdf — access key 'C' (0.12 MB) 
Ocean/sea areas 
GeneralInner Seas off the West Coast of Scotland
North East Atlantic Ocean (limit 40W)
SpecificMalin Shelf, Rockall, Anton Dohrn Seamount
Track chartsRRS Challenger CH12A/75 cruise track — trk1458a.html
Measurements 
Physical oceanography 
CTD stationsQuantity: number of stations = 21
Chemical oceanography 
RadioactivityQuantity: number of samples = 10
Description: surface water samples for radio-caesium analysis.
Geology and geophysics 
GrabQuantity: number of samples = 30
Description: obtained using Shipek grab.
Data held at BODC 
Series/Profiles 
21  CTD/STD cast
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column

BODC idDate/TimeLocationDoc.
897411975-09-01 09:00 57° 45' 59" N  9° 7' 59" W  View metadata report for BODC series reference number 89741
897531975-09-01 10:38 57° 41' 29" N  8° 45' 59" W  View metadata report for BODC series reference number 89753
895201975-08-29 19:35 56° 37' 5" N  11° 33' 0" W  View metadata report for BODC series reference number 89520
895321975-08-29 23:05 56° 25' 59" N  11° 2' 53" W  View metadata report for BODC series reference number 89532
895441975-08-30 04:05 56° 14' 29" N  10° 33' 59" W  View metadata report for BODC series reference number 89544
895561975-08-30 07:11 56° 6' 59" N  10° 11' 59" W  View metadata report for BODC series reference number 89556
895681975-08-30 10:03 56° 0' 11" N  9° 49' 53" W  View metadata report for BODC series reference number 89568
895811975-08-30 12:06 55° 56' 11" N  9° 37' 59" W  View metadata report for BODC series reference number 89581
895931975-08-30 16:35 55° 46' 59" N  9° 16' 0" W  View metadata report for BODC series reference number 89593
896001975-08-30 19:10 55° 42' 5" N  9° 0' 0" W  View metadata report for BODC series reference number 89600
896121975-08-30 22:03 55° 33' 59" N  8° 37' 59" W  View metadata report for BODC series reference number 89612
896241975-08-31 00:40 55° 43' 47" N  8° 37' 59" W  View metadata report for BODC series reference number 89624
896361975-08-31 02:40 55° 54' 11" N  8° 40' 11" W  View metadata report for BODC series reference number 89636
896481975-08-31 04:10 56° 3' 59" N  8° 40' 59" W  View metadata report for BODC series reference number 89648
896611975-08-31 08:53 56° 34' 5" N  8° 44' 5" W  View metadata report for BODC series reference number 89661
896731975-08-31 12:10 56° 57' 0" N  8° 46' 59" W  View metadata report for BODC series reference number 89673
896851975-08-31 13:40 57° 0' 0" N  9° 0' 0" W  View metadata report for BODC series reference number 89685
896971975-08-31 17:00 57° 6' 0" N  9° 25' 23" W  View metadata report for BODC series reference number 89697
897041975-09-01 01:12 58° 1' 59" N  10° 22' 59" W  View metadata report for BODC series reference number 89704
897161975-09-01 06:41 57° 51' 59" N  9° 33' 59" W  View metadata report for BODC series reference number 89716
897281975-09-01 07:49 57° 49' 17" N  9° 20' 42" W  View metadata report for BODC series reference number 89728