RRS Challenger CH10/81
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | CH10/81 |
| Cruise period | 1981-07-04 — 1981-07-14 |
| Status | Completed |
| Port of departure | Barry, United Kingdom |
| Port of return | Ardrossan, United Kingdom |
| Purpose | Research |
| Objectives | The objectives of this cruise were:
(1) To service the current meter mooring at 57N, 9W and the corrosion potential current meter mooring off South Uist. Current meter mooring recovered and re-laid. South Uist mooring recovered, but not re-laid. (2) To make an extensive CTD survey of the Scottish Coastal Current between the North Channel and Cape Wrath, including large-volume surface sampling for radiocaesium analysis. Large number of CTD sections worked, covering the whole of the NW Scottish shelf, including a section of the eastern Ellett Line. (3) To collect sediment cores with the WHOI tripod at locations along the axis of the Scottish Coastal Current. Cores obtained at five of six planned sites. (4) To measure chlorophyll concentrations over the shelf and shelf-edge. Accomplished. (5) To work two CTD sections across the continental slope. Accomplished. (6) To collect large-volume surface water samples for radiocaesium analysis. Accomplished. |
| Chief scientist | David T Meldrum (Scottish Marine Biological Association) |
| Cruise report |  (0.25 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland North East Atlantic Ocean (limit 40W) |
| Specific | N.E. Atlantic |
| Track charts | (0.07 MB) |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | |
| CTD stations | Quantity: number of stations = 139 Description: noisy salinity |
| Current meters | Quantity: number of stations = 1 Description: mooring with 2 c.m.recovered and relaid;90 days |
| Other physical oceanographic measurements | Quantity: activity duration in days = 80 Description: one corrosion potential c.m. |
| Chemical oceanography | |
| Radioactivity | Quantity: number of samples = 101 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Description: chlorophyl,continuous fluorometer and discrete samples |
| Geology and geophysics | |
| Core - soft bottom | Quantity: number of cores = 5 |