Cruise inventory

RV Corella 3/76

Cruise summary report

Cruise Info. 
Ship name (ship code)RV Corella (74CX)
Cruise identifier3/76
Cruise period1976-02-18 — 1976-02-28
Port of departureLowestoft, United Kingdom
Port of returnLowestoft, United Kingdom
Objectives1. Investigate the distribution and abundance of planktonic fish
eggs and larvae, zooplankton predators and competitors and the
phytoplankton using the Lowestoft multipurpose plankton sampler.
2. Monitor the sub-surface water continuously along the ship's track
for temperature, salinity, transparency and chlorophyll "a".
3. Collect water samples from the pump for salinity and nutrient
analyses; calibrate the fluorometer with chlorophyll "a" extracts;
measure phaeophytin, and identify the phytoplankton contribution
to chlorophyll "a" fluorescence including the preparation of slides
for electron microscope examination of the micro-flagellates.
4. Carry out hauls with the Boothbay net to sample young fish.
5. Use the changing net sampler to investigate vertical distribution
of fish eggs and larvae and the zooplankton, alternating with
water bottle casts for phytoplankton, chlorophyll "a" and
phaeophytin in relation to temperature and light penetration
into the water column over a 26 hour period.
6. Collect samples of fish for stomach content analysis using the
young gadoid trawl in midwater.
7. Collect live plankton and fish eggs as required.
Chief scientistJohn H Nichols (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)
Cruise reportRV Corella 3/76 cruise report corella03_76.pdf — access key 'C' (0.31 MB) 
Ocean/sea areas 
GeneralNorth Sea
Track chartsRV Corella 3/76 cruise track — trk1730.html
Physical oceanography 
Surface measurements underway (T,S)Description: S only
Water bottle stationsQuantity: number of stations = 7
Description: T surface
Transparency (eg transmissometer)Description: continuous
Optics (eg underwater light levels)Quantity: number of profiles = 3
Description: light absorption
Surface drifters/drifting buoysQuantity: number of deployments = 700
Description: bottom
Chemical oceanography 
OxygenDescription: continuous
PhosphateQuantity: number of samples = 100
NitrateQuantity: number of samples = 100
SilicateQuantity: number of samples = 100
pHDescription: continuous
Biology and fisheries 
Primary productivityDescription: continuous
Phytoplankton pigs (eg chlorophyll, fluorescence)Description: continuous
PhytoplanktonQuantity: number of samples = 114
Description: taxonomy
ZooplanktonQuantity: number of samples = 100
Eggs and larvaeQuantity: number of samples = 100
Description: population and environment,distribution
Pelagic fishQuantity: number of hauls = 10
Description: population and environment
Incident radiationDescription: continuous solarimeter measurements in daylight hours