FRV Clupea 0504C

Cruise summary report

Cruise Info. 
Ship name (ship code)FRV Clupea (74CU)
Cruise identifier0504C
Cruise period2004-03-20 — 2004-03-29
Port of departureFraserburgh, United Kingdom
Port of returnFraserburgh, United Kingdom
Objectives1. To investigate variation of sandeel population age structure at different locations on the Wee Bankie and Marr Bank from samples collected using the sandeel dredge.
2. To determine spatial variation in seawater temperature/salinity and chlorophyll across the study area using a Seabird CTD sampler.
3. To investigate potential new sites for sandeel dredging, using the sandeel dredge and day grab in the Firth of Forth.
Chief scientistHelen M Fraser (Fisheries Research Services Aberdeen Marine Laboratory)
Cruise reportFRV Clupea 0504C cruise report 0504c.pdf (0.06 MB) 
Ocean/sea areas 
GeneralNorth Sea
SpecificWee Bankie; Marr Bank; Firth of Forth
Physical oceanography 
CTD stationsQuantity: number of profiles = 11
Description: CTD casts (temperature, salinity, fluorometry, transmissometry)
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of profiles = 11
Description: Chlorophyll samples for fluorometer calibration
Pelagic fishQuantity: number of profiles = 11
Description: Sandeel dredges, sandeel biological data (number, weight, length, age)
Geology and geophysics 
GrabQuantity: number of samples = 580
Description: Sediment samples taken from each grab