Cruise inventory

British Enterprise III BE0190

Cruise summary report

Cruise Info. 
Ship name (ship code)British Enterprise III (74BZ)
Cruise identifierBE0190
Cruise period1990-01-09 — 1990-01-29
StatusCompleted
Port of departureAberdeen, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeResearch
ObjectivesDAFS charter - Fish survey.
1. To determine the horizontal distribution of herring larvae in the northern North Sea, in relation to the boundary between the North Sea water, the Norwegian Coastal Current, and the deep inflow of Atlantic water from the north.
2. To accurately map the boundary of the Coastal Current, and the core of the inflow using temperature, salinity and nitrate as tracers, and with reference to satellite photographs.
3. To investigate the 3-dimensional structure of water currents along a section of the current boundary and inflow region using the Acoustic Doppler Current Profiler.
4. To investigate the 3-dimensional distribution of herring larvae and zooplankton along a section of the current boundary and in the inflow region using LOCHNESS and ARIES, and estimate the exchange rate of larvae between the North Sea and Coastal Current waters.
5. To investigate the vertical migration behaviour of herring larvae and zooplankton using LOCHNESS and ARIES.
6. To obtain samples of herring larvae for estimation of growtth rate and biochemical condition indices.
7. To carry out prey selection experiments on herring larvae.
8. To compare the productivity and composition of the zooplankton and phytoplankton in the North Sea and Norwegian Coastal Current waters, and assess the relative suitability of the two water types for supporting the growth of herring larvae.
Chief scientistMike R Heath (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)
Cruise reportBritish Enterprise III BE0190 cruise report british_enterprise_iii_jan90.pdf — access key 'C' (0.18 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificNorthern North Sea.
Track chartsBritish Enterprise III BE0190 cruise track — trk3640.html British Enterprise III BE0190 cruise track — trk3640b.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Description: whole duration of cruise
Water bottle stationsQuantity: number of stations = 13
CTD stations
Subsurface temperature and salinity measurements
Transparency (eg transmissometer)
Current profiler (eg ADCP)Description: hull mounted whole cruise
Other physical oceanographic measurementsDescription: comps sat photos
Other physical oceanographic measurementsDescription: fluorescence
Chemical oceanography 
PhosphateQuantity: 13
Description: continuous flow analyser
NitrateQuantity: 13
Nitrite
SilicateQuantity: 13
Biology and fisheries 
Primary productivityQuantity: 4
Biochemical measurements (eg lipids, amino acids)Description: RNA/DNA analysis
PhytoplanktonDescription: tows of aries, Lochness
ZooplanktonDescription: MIKT large and small, and gulf III
Eggs and larvae
Pelagic bacteria/micro-organisms