Sea/Ocean |
Bay of Biscay (Golfe de Gascogne, Mer d'Iroise et Mer Celtique) |
Ports |
Port of departure : Brest (France)
Port of return : Brest (France)
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Project |
HALIEUTIC RESOURCES ASSESSMENT-WEST EUROPE (EVHOE),INFORMATION SYSTEMS, ECONOMY, DIAGNOSIS OF RESOURCES |
Scientific Authority |
ÉCOLOGIE ET MODÈLES POUR L'HALIEUTIQUE Centre Ifremer de Nantes Rue de l'Ile d'Yeu 44311 Nantes Cedex 3 +33 (0)2 40 37 41 67 |
Participating bodie(s) |
IFREMER/DRV/RH/ Boulogne sur mer, Lorient, Nantes, L'Houmeau
IFREMER/DRV/RH/ECOHAL/Nantes
IFREMER/DRV/DEL/La Trinite sur mer
IFREMER/TMSI/TP Lorient et Brest
LBEM/Université La Rochelle
MNHM/CRMM/ La Rochelle
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Discipline(s) |
- TECHNOLOGY
- BIOLOGICAL OCEANOGRAPHY
- FISHERIES
- PHYSICAL OCEANOGRAPHY
Code |
Label |
Quantity |
PI |
B19 |
Demersal fish Tri, pesees, mensurations/espece/station |
153 specimens |
MAHE Jean-Claude |
B20 |
Molluscs Tri, pesees, mensurations/espece/station |
153 specimens |
MAHE Jean-Claude |
B21 |
Crustaceans Tri, pesees, mensurations/espece/station |
153 specimens |
MAHE Jean-Claude |
B90 |
Other biological/fisheries meas. Determinations d'age pour diverses especes |
3000 specimens |
BAVOUZET Gérard |
D90 |
Other physical oceanographic meas. Geometrie des chaluts en peche |
- |
MAHE Jean-Claude |
G73 |
Single-beam echosounding En continu, en station et en transit |
- |
MAHE Jean-Claude |
H10 |
CTD stations Profils verticaux |
161 stations |
MAHE Jean-Claude |
|
Summary of measurements |
- -161 standardized daytime bottom trawl hauls (153 of which were valid), lasting 30 min. after the geometric parameters of the GOV 36/47 trawl were stabilized, in 27 geographical-bathymetric strata, on seabeds
from 15 to 600 meters. - 7 night-time pelagic trawlings were made over deep seabeds in the Bay of Biscay, at depths of 1,300, 1,000, 500 and 200 m, to collect unknown or poorly known meso- and bathypelagic species. -161 vertical temperature and salinity profiles taken using the Seabird 19 CTD at the bottom trawl positions. Data were transmitted to CORIOLIS. - With each trawl haul: determination, weighing and measuring of each species caught; sex determination for main commercial species, and hard organ (otoliths, illicia) samples were taken. - With each trawl haul: New biological parameters were acquired for various species. The benthos collected was analyzed by LBEM/University of La Rochelle. -Measurement of the tension on the GOV 36/47 rigging on 38 hauls to improve knowledge about the fishing rig, check the weighing of the groundrope on the bottom while the station was sampled, etc. -Acquiring data to model the operations of slacking out and turning the trawl (TMSI/TP/Lorient). -Fish grading machine trials (TMSI/TP/Brest) -Receiving, using and archiving CATSAT data. Mainly used on board for weather reports and short-term scheduling of studies.
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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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