RRS Challenger CH81
Cruise summary report
|Ship name (ship code)||RRS Challenger (74CH)|
|Cruise period||1991-07-01 — 1991-07-08|
|Port of departure||Dunstaffnage, United Kingdom|
|Port of return||Troon, United Kingdom|
|Objectives||1. To collect CTD profiles and large-volume water samples at standard positions between the Sound of Mull and the shelf-edge west of Barra for radiocaesium studies.
2. To service the DML current meter mooring in the Tiree Passage.
3. To work the CTD stations of the Anton Dohrn Seamount (Ellett Line) section, between the shelf-edge and Rockall, to continue the Rockall Trough time-series as a UK contribution to WOCE Goal 3.
4. To work the Rockall - Malin Head CTD section for further investigation of recent water mass changes west of Britain.
5. To collect Craib cores for microbiological enrichment studies at 3-4 sites.
6. To work shelf CTD sections in the Sea of the Hebrides and North Channel as time permits.
7. To collect wave data for POL using the ship's radar.
|Chief scientist||David J Ellett (Dunstaffnage Marine Laboratory)|
|Cruise report||(0.15 MB)|
|General||Inner Seas off the West Coast of Scotland|
North East Atlantic Ocean (limit 40W)
|Specific||Scottish continental shelf and Rockall Channel|
|Bathythermograph||Quantity: number of profiles = 4|
Description: XBT along Rockall-Malin Head section
|CTD stations||Quantity: number of stations = 48|
|Current meters||Quantity: number of deployments = 1|
Description: 2 cms deployed
|Radioactivity||Quantity: number of stations = 10|
Description: Radiocaesium sampling, Mull to shelf edge
|Biology and fisheries|
|Biochemical measurements (eg lipids, amino acids)||Quantity: number of cores = 6|
Description: cores - Craib cores for microbiological studies
|Moorings, landers, buoys|
|Current meters||56° 37' 0" N 6° 24' 0" W — Mooring laid 1 July for recovery Nov 1991, Sounding 47m, cms at 27 & 37m depth|