RRS Discovery D148
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Discovery (74E3) |
| Cruise identifier | D148 |
| Cruise period | 1984-05-21 — 1984-06-11 |
| Status | Completed |
| Port of departure | Falmouth, United Kingdom |
| Port of return | Funchal, Portugal |
| Purpose | Research |
| Objectives | 1. To sample repeatedly at a depth >3000m in order to provide a statistical basis for future deep-sea sampling programmes.
2. To fish a transect of oblique midwater nets between 44N and 36N to study the latitudinal succession of different species and the effects of different water masses upon these. 3. To fish a transect of otter trawls between 48N and 35N to study latitudinal differences in benthic fish populations. 4. To catch midwater and benthic animals for a variety of biochemical and experimental observations. 5. To test a new near-bottom echo sounder fitted to the midwater trawls. 6. To test a new linear release gear for midwater trawls. |
| Chief scientist | Howard S J Roe (Institute of Oceanographic Sciences Wormley Laboratory) |
| Cruise report |  (0.64 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Specific | Azores - Biscay Rise |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Bathythermograph | Quantity: number of profiles = 45 |
| CTD stations | Quantity: number of stations = 6 |
| Biology and fisheries | |
| Zooplankton | Quantity: number of hauls = 61 |
| Nekton | Quantity: number of hauls = 122 |
| Pelagic fish | Quantity: number of hauls = 61 Description: survey:taxonomy,distribution,biomass determination |
| Gear research | |
| Other biological/fisheries measurement | Description: bioluminescence |
| Meteorology | |
| Routine standard measurements | |
| Geology and geophysics | |
| Multi-beam echosounding | Quantity: track kilometres = 1480 |
