RV Eastella EA0688
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RV Eastella (740A) |
| Cruise identifier | EA0688 |
| Cruise period | 1988-06-11 — 1988-06-24 |
| Status | Completed |
| Port of departure | Aberdeen, United Kingdom |
| Port of return | Aberdeen, United Kingdom |
| Purpose | Research |
| Objectives | 1. To study the distribution and biomass of plankton organisms in mixed, frontal and stratified regions of the northern North Sea using dual frequency acoustic back-scattering methods, sampling with opening and closing net systems and optical sensors.
2. To study the relationship between hydrography and nitrogen limitation of phytoplankton growth in contrasting regions of the northern North Sea. 3. To study the reproduction rates of copepod species in contrasting regions of the northern North Sea and relate these to hydrography and the nitrogen status of phytoplankton. |
| Chief scientist | Mike R Heath (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory) |
| Cruise report |  (0.10 MB) |
| Ocean/sea areas | |
| General | North Sea |
| Specific | N. North Sea |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| CTD stations | Quantity: number of stations = 10 |
| Subsurface temperature and salinity measurements | |
| Transparency (eg transmissometer) | |
| Optics (eg underwater light levels) | |
| Surface drifters/drifting buoys | Quantity: number of deployments = 2 Description: argos buoys |
| Chemical oceanography | |
| Other chemical oceanographic measurements | Description: nutrients |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Description: fluorescence |
| Phytoplankton | Quantity: 10 Description: detailed site studies |
| Zooplankton | |
| Eggs and larvae | |
| Acoustic reflection on marine organisms. | Description: whole cruise |
