FRV Explorer 4B/68
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Explorer (74EX) |
| Cruise identifier | 4B/68 |
| Cruise period | 1968-05-22 — 1968-06-01 |
| Status | Completed |
| Port of departure | Stornoway, United Kingdom |
| Port of return | Aberdeen, United Kingdom |
| Purpose | Research |
| Objectives | 1) Hydro-Plankton survey of the bank was carried out till the 30/05/1968.
2) Hydro stations were worked at to St. Kilda The Technicon Anaylser was run continuously throughout the cruise to provide surface silicate data. Phytoplankton sedimentation samples were collect for Dr Gillbricht, Kiel, for comparison with chlorophyll data and with carbon-14 estimates of production. Deep water microbiological studies were carried out by Dr Munro in the centre of the channel between Rockall and St. Kilda |
| Chief scientist | John H Steele (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
| Cruise report |  (0.20 MB) |
| Ocean/sea areas | |
| General | North Atlantic Ocean |
| Specific | Rockall, Moray Firth |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Description: T only |
| Bathythermograph | Quantity: number of profiles = 7 Description: mechanical |
| Water bottle stations | Quantity: number of stations = 34 Description: 74 T surface |
| Chemical oceanography | |
| Phosphate | Quantity: 31 Description: Technicon Anaylser was run continuously throughout the cruise to provide surface data |
| Nitrate | Quantity: 13 Description: Technicon Anaylser was run continuously throughout the cruise to provide surface data |
| Isotopes | Description: C |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: 32 Description: The Turner fluorometer was run continuously for chlorophyll. |
| Phytoplankton | Quantity: 67 Description: In virto sampling carried out for calibration purposes |
