FRV Explorer 3A/69
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Explorer (74EX) |
| Cruise identifier | 3A/69 |
| Cruise period | 1969-06-07 — 1969-06-16 |
| Status | Completed |
| Port of departure | Aberdeen, United Kingdom |
| Port of return | Lerwick, United Kingdom |
| Purpose | Research |
| Objectives | Hydrographic survey in a region north-east of Shetland, at 62 minutes North 2 degrees East at the edge of the Northern Shelf boardering the Norwegian Deeps, and 60 degrees 56 minutes and 40 minutes West off Muckle Flugga that commenced on the 08/06/1969. Additional hydrographic stations were worked near the drogues to supplement earlier observations of the area.
Preliminary trials were made of an automated chemical analysis system incorporating channel switching and automatic calibration. A full set of samples was taken with the Modified Plankton Indicator for the SMBA Laboratory Edinburgh. The echo sounder was in continuous operation and fully annotated. |
| Chief scientist | Robert Johnston (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory), Roger S Bailey (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory) |
| Cruise report |  (0.22 MB) |
| Ocean/sea areas | |
| General | North Atlantic Ocean |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Description: T only |
| Water bottle stations | Quantity: number of stations = 37 Description: also 33 T surface |
| CTD stations | Quantity: number of stations = 5 |
| Surface drifters/drifting buoys | Quantity: 16 Description: parachute drogues released at 6 positions, each drogue being tracked for at least 13 hours/curr.cross |
| Chemical oceanography | |
| Oxygen | Quantity: 6 |
| Phosphate | Quantity: 6 |
| Nitrate | Quantity: 6 |
| Nitrite | |
| Silicate | Quantity: 6 |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Description: chlorophyll |
| Phytoplankton | Quantity: 22 |
| Meteorology | |
| Routine standard measurements |
