Geochemical characterization of fluid seeps in the Bay of Biscay: samples taken in situ with ROV Victor on fluid seep sites on the Aquitaine shelf for analysis of fluids, sediments, rocks (authigenic precipitates including carbonates), fauna and microbial assemblages. This falls under the PAMELA project.
Sea/Ocean
Bay of Biscay
(Aquitanian Plateau)
Ports
Port of departure : A Coruña (Spain)
Port of return : A Coruña (Spain)
Project
PAssive Margins Exploration LAboratories
Scientific Authority
GÉOSCIENCES MARINES
Centre Ifremer Bretagne
ZI Pointe du Diable
29280 Plouzané
+33(0)2 98.22.42.24
Participating bodie(s)
UPMC-LOCEAN, IFP-EN, TOTAL
Discipline(s)
PHYSICAL OCEANOGRAPHY
MARINE GEOSCIENCES
Code
Label
Quantity
PI
D71
Current profiler (eg ADCP)
-
DUPRE Stéphanie
D90
Other physical oceanographic meas.
-
DUPRE Stéphanie
G03
Core rock
-
DUPRE Stéphanie
G08
Bottom photography
-
DUPRE Stéphanie
G24
Long to short range side scan sonar
-
DUPRE Stéphanie
G27
Gravity measurements
-
DUPRE Stéphanie
G71
In-situ seafloor meas. or sampling
-
DUPRE Stéphanie
G73
Single-beam echosounding
-
DUPRE Stéphanie
G74
Multi-beam echosounding
-
DUPRE Stéphanie
G75
Single channel seismic reflection
-
DUPRE Stéphanie
H11
Subsurface meas. underway (T,S)
-
DUPRE Stéphanie
H13
Bathythermograph
-
DUPRE Stéphanie
H71
Surface measurements underway (T,S)
-
DUPRE Stéphanie
M06
Routine standard measurements
-
DUPRE Stéphanie
Summary of measurements
-Seabed mapping with multibeam echosounders (7111 and 7150). -Water column acoustics with multibeam echosounders (7111 and 7150). -Profiles with sub-bottom profiler. -Calypso core samples taken. -Thermosalinity. -Victor ROV dives. -ADCP.
Positionning system
Geodetic system : WORLD GEODETIC SYSTEM 1984 = WGS84
Positioning system : GPS différentiel
Published data
Dupré Stéphanie (2024). Spatial distribution of (sub-)outcropping methane-derived authigenic carbonate structures at the outer Aquitaine Shelf. https://doi.org/10.17882/98661
Marie Louis, Loubrieu Benoit, Dupre Stephanie (2019). Seawater temperature, conductivity, pressure and salinity data offshore the Aquitaine Basin (XBT profiles and near-bottom moorings). https://doi.org/10.17882/61855
Torelli Martina, Kowalewski Isabelle, Gervais Veronique, Wendebourg Johannes, Dupré Stephanie, Wolf Sylvie, Gout Claude, Deville Eric (2021). Quantification of natural microbial methane from generation to emission in the offshore Aquitaine: A basin modelling approach. Marine And Petroleum Geology, 127, 104949 (17p.). Publisher's official version : https://doi.org/10.1016/j.marpetgeo.2021.104949 , Open Access version : https://archimer.ifremer.fr/doc/00679/79088/
Pierre Catherine, Demange Jerome, Blanc-Valleron Marie-Madeleine, Dupre Stephanie (2017). Authigenic carbonate mounds from active methane seeps on the southern Aquitaine Shelf (Bay of Biscay, France): evidence for anaerobic oxidation of biogenic methane and submarine groundwater discharge during formation. Continental Shelf Research, 133, 13-25. Publisher's official version : https://doi.org/10.1016/j.csr.2016.12.003 , Open Access version : https://archimer.ifremer.fr/doc/00361/47209/