Cruise inventory

FRV Explorer 10/72

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Explorer (74EX)
Cruise identifier10/72
Cruise period1972-11-17 — 1972-12-22
StatusCompleted
Port of returnAberdeen, United Kingdom
PurposeResearch
Objectives1) Extra plankton sampling was done off Irvine Bay
2) Extra pollution sampling was carried out in Scapa Flow - mercury analysis
3) Cod, T.esmarkii, N. poutassou and several other gadoids were frozen and taken back to the laboratory for examination
4) Dutch Gulf III samples of plankton were preserved in formalin for herring larval studies and other samples deep frozen for dry weight estimation

The ship was forced to shelter in Minch on the due to bad weather, sampling and trawling got delayed on several occasions. The ship put into Greenock on the 30/11/1972 for change in ship's personnel, water and engine repairs leaving on the 01/12/1972.
Chief scientistNorman T Nicoll (Department of Agriculture and Fisheries for Scotland Aberdeen Marine Laboratory)
Cruise reportFRV Explorer 10/72 cruise report explorer10_72.pdf — access key 'C' (0.10 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificMoray Firth, Clyde, Hebreides, N. Ireland, Orkney, S of St Kilda
Measurements 
Physical oceanography 
Water bottle stationsQuantity: number of stations = 40
Chemical oceanography 
PhosphateQuantity: 40
NitrateQuantity: 40
SilicateQuantity: 40
Contamination 
Other contaminant measurementsQuantity: 5
Description: chemical pollution
Biology and fisheries 
Primary productivityQuantity: 47
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: 40
Particulate organic matter (inc POC, PON)Quantity: 40
PhytoplanktonQuantity: number of hauls = 20
Description: Standard nets. Duplicate Dutch Gulf III samples were taken at all stations worked.
ZooplanktonQuantity: 40
Pelagic fishQuantity: number of stations = 35
Description: Whiting, haddock, dogfish, squid, herring, cod, T.esmarkii, N. poutassou, several other gadoids, 250 hake otoliths were collected in tubes of seawater
Demersal fishQuantity: number of stations = 35
Description: Whiting, haddock, dogfish, squid, herring, cod, T.esmarkii, N. poutassou, several other gadoids, 250 hake otoliths were collected in tubes of seawater