RV Corella 8/71

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corella (74CX)
Cruise identifier8/71
Cruise period1971-04-29 — 1971-05-09
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. To carry out a survey of the distributions of fish eggs and larvae in the Southern Bight and Flamborough spawning grounds in the North Sea.
2. To monitor turbidity, chlorophyll 'a' and temperature continuously in
the sea surface water.
3. To record fish traces using a MS 29 echo sounder.
4. To measure temperature/depth profiles and Iight penetration at selected stations.
5. To collect samples of water for trace element analysis by atomic absorption spectrophotometry.
6. To collect samples of live planktonic copepods.
7. To carry out vertical distribution studies of fish larvae using the Lowestoft changing net sampler.
8. To try out a neuston net for fish larvae living close to the surface.
Chief scientistDerek Harding (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Corella 8/71 cruise report corella08_71.pdf (0.18 MB) 
Ocean/sea areas 
GeneralNorth Sea
Specific51.30-55N 01W-05E
Physical oceanography 
Water bottle stationsDescription: T.D. profiles only 129 surface
Optics (eg underwater light levels)Description: turbidity light penetration at 8 selec. stations
Chemical oceanography 
Trace elementsDescription: water samp. for analysis
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Description: chlorophyll a cont.
PhytoplanktonQuantity: number of stations = 131
ZooplanktonQuantity: number of stations = 131
NeustonQuantity: number of samples = 1
Eggs and larvaeQuantity: number of stations = 131
Occasional standard measurements
Other meteorological measurementsDescription: sea and swell
Geology and geophysics 
Multi-beam echosounding