Sea/Ocean |
North Sea (Southern North Sea) |
Ports |
Port of departure : Brest (France)
Port of return : Boulogne (France)
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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 |
82 specimens |
VERIN Yves |
D90 |
Other physical oceanographic meas. Age determination for the main commercial species |
4500 specimens |
VERIN Yves |
G73 |
Single-beam echosounding EK500 sounder on MOVIES+ in routine |
- |
VERIN Yves |
H10 |
CTD stations Seabird SBE19 bathysonde - Temperature and salinity |
81 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 |
- -82 bottom trawling (GOV 36/47 trawl) made 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 4,500otolith samples on: cod, whiting, haddock, sprat, herring, Norway pout and plaice. -81 vertical temperature and salinity profiles using the SBE 19 CDT-58 stations surveyed with larva nets (calculating larval abundance index for herring and sprat). -Recording of acoustic data during the trawl hauls and on trips between stations. -In the framework of the European RASER (Reproduction And Stock Evaluation for Recovery) program coordinated by the CEFAS in Lowestoft (UK), assessment inter alia of cod broodstock potential with respect to its geographic distribution. -Live fish captured for Nausicaa, the national sea experience centre in Boulogne/mer
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Location map |
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Positionning system |
Geodetic system : WORLD GEODETIC SYSTEM 1984 = WGS84
Positioning system : GPS différentiel
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