Sea/Ocean |
North Sea (Southern North Sea) |
Ports |
Port of departure : Boulogne (France)
Port of return : Boulogne (France)
|
Project |
INTERNATIONAL BOTTOM TRAWL SURVEY (IBTS) - FRANCE,INFORMATION SYSTEMS, ECONOMY, DIAGNOSIS OF RESOURCES |
Scientific Authority |
CENTRE MANCHE-MER DU NORD IFREMER Centre de Boulogne sur Mer 150 quai Gambetta 62321 BOULOGNE-SUR-MER CEDEX +33 (0)3 21.99.56.00 https://www.ifremer.fr/fr/implantations/l-ifremer-en-manche-mer-du-nord |
Participating bodie(s) |
IFREMER Boulogne / Brest / Nantes, Université du Havre, Université de Liege, Université de Lille. |
Discipline(s) |
- PHYSICAL OCEANOGRAPHY
- BIOLOGICAL OCEANOGRAPHY
- CHEMICAL OCEANOGRAPHY
Code |
Label |
Quantity |
PI |
B19 |
Demersal fish Sorting, weighing, measuring |
78 specimens |
VERIN Yves |
D90 |
Other physical oceanographic meas. Age determination for the main commercial species |
3000 specimens |
VERIN Yves |
G73 |
Single-beam echosounding EK500 sounder on MOVIES+ in routine |
- |
VERIN Yves |
H10 |
CTD stations Seabird SBE19 bathysonde - Temperature and salinity |
75 stations |
VERIN Yves |
H71 |
Surface measurements underway (T,S) Thermosalinometer |
- |
VERIN Yves |
M06 |
Routine standard measurements Wind and weather stations |
- |
VERIN Yves |
|
Summary of measurements |
- -78 bottom trawl hauls (GOV 36/47 trawl) done in 58 statistical rectangles.
- With each trawl haul: weighing, determination and measurement of each species caught -determining sex and stage of sexual maturity and taking 3,000 otolith samples in: cod, haddock, whiting, sprat, herring, Norway pout and plaice. -75 vertical temperature and salinity profiles taken using the CTD SBE 19. -Gonad samples taken in flounder and dab to study the biological effects of chemical contaminants on fishery resources (University of Le Havre). -39 stations with larva nets (calculation of a larval abundance index for herring and sprat). -Live cod captures (60) for rearing trials at the RA laboratory (IFREMER/Brest). -Recording of acoustic data during the trawl hauls and on trips between stations. -20 sediment grab samples on a leg.
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Location map |
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Positionning system |
Geodetic system : WORLD GEODETIC SYSTEM 1984 = WGS84
Positioning system : GPS naturel et différentiel
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