RRS Challenger CH3/75
Cruise summary report
|Ship name (ship code)||RRS Challenger (74CH)|
|Cruise period||1975-03-04 — 1975-03-13|
|Objectives||The objectives of this cruise were:
1. Establish a current meter mooring at 57N, 9W. Deployed successfully, but a check on 11/03/1975 failed to locate it.
2. Work hydrographic sections across the Rockall Channel from 55° 34 min N, 8° 38 min W to Rockall Bank and from Rockall to 57N 9W via the Anton Dohrn Seamount (Ellett Line). The section from 57N to 9W started but abandoned due to bad weather. Malin Head to Rockall section worked successfully.
3. Collection of shelf sediment Shipek Grab samples for Aberystwyth University. Accomplished.
4. Working additional hydrographic sections. Not possible due to weather.
5. Collection of large-volume water samples for radio-caesium measurements. Accomplished
6. Testing and development of a data logging system for STD system. Accomplished.
7. Near real-time supply of temperature profiles to the Met Office. Accomplished.
|Chief scientist||David J Ellett (Scottish Marine Biological Association)|
|Cruise report||(0.12 MB)|
|General||Inner Seas off the West Coast of Scotland|
North East Atlantic Ocean (limit 40W)
|Water bottle stations||Quantity: number of stations = 6|
Description: 30 S surface
|CTD stations||Quantity: number of stations = 20|
|Current meters||Quantity: number of deployments = 1|
Description: 2x2 days
|Radioactivity||Quantity: number of samples = 10|
Description: surface water samples obtained for radio-caesium determination.
|Routine standard measurements|
|Geology and geophysics|
|Grab||Quantity: number of deployments = 25|
Description: Shipek grabs.
|Moorings, landers, buoys|
|Current meters||57° 0' 0" N 9° 0' 0" W — Current meter mooring deployed, but a check towards the end of the cruise revealed its loss.|