Cruise inventory

RV Eastella EA0688

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Eastella (740A)
Cruise identifierEA0688
Cruise period1988-06-11 — 1988-06-24
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
Objectives1. 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 scientistMike R Heath (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)
Cruise reportRV Eastella EA0688 cruise report eastella_jun88.pdf — access key 'C' (0.10 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificN. North Sea
Track chartsRV Eastella EA0688 cruise track — trk3576a.html RV Eastella EA0688 cruise track — trk3576b.html
Physical oceanography 
CTD stationsQuantity: number of stations = 10
Subsurface temperature and salinity measurements
Transparency (eg transmissometer)
Optics (eg underwater light levels)
Surface drifters/drifting buoysQuantity: number of deployments = 2
Description: argos buoys
Chemical oceanography 
Other chemical oceanographic measurementsDescription: nutrients
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Description: fluorescence
PhytoplanktonQuantity: 10
Description: detailed site studies
Eggs and larvae
Acoustic reflection on marine organisms.Description: whole cruise