• Metadata catalogue
  •  
  •  
  •  

Spatial distribution of (sub-)outcropping methane-derived authigenic carbonate structures at the outer Aquitaine Shelf

The present database is composed of a polygon shape file (.shp) dedicated to GIS applications. This seafloor surface represents the area within which (sub-)outcropping methane derived authigenic carbonates were identified based on ship-borne multibeam bathymetry and seafloor backscatter data; as displayed in Figs. 4 and S1a of Dupré et al. 2020 (Dupré S, Loubrieu B, Pierre C, Scalabrin C, Guérin C, Ehrhold A, Ogor A, Gautier E, Ruffine L, Biville R, Saout J, Breton C, Floodpage J, Lescanne M (2020) The Aquitaine Shelf Edge (Bay of Biscay): A Primary Outlet for Microbial Methane Release. Geophysical Research Letters 47 (7):e2019GL084561. doi:10.1029/2019gl084561). The presence of (sub-)outcropping methane-derived authigenic carbonates at the seafloor was confirmed by remotely-operated-vehicle dives during the GAZCOGNE2 marine expedition.

The acoustic data were acquired in 2013 on board the R/V Le Suroît during the GAZCOGNE1 expedition with two ship-borne multibeam echosounders, the Kongsberg EM302 and EM2040, with transmission frequency of 30 and 200 kHz, respectively. Details on multibeam data acquisition, processing and interpretation of sub-outcropping methane-derived authigenic carbonate structures are presented in Dupré et al 2020 (including a Supporting Information section).

Cited from Dupré et al 2020: “The carbonates are exclusively located along the shelf edge with the majority (98%) between 140 and 220 m water depths. The (sub-)outcropping carbonates are spread over a 375 km2 area that extends over a distance of 80 km between the Cap Ferret and Capbreton canyons. The western spatial limit of the methane-derived authigenic carbonates coincides with the shelf break.”

 
Citation proposal
DUPRÉ Stéphanie (Ifremer, Geo-Ocean UMR, France, Plouzané) (2024) . Spatial distribution of (sub-)outcropping methane-derived authigenic carbonate structures at the outer Aquitaine Shelf. https://services.mspdata.eu:/geonetwork/srv/api/records/seanoe:98661

Simple

Date ( Publication )
2024-01
Date ( Revision )
2024-02-06
Other citation details
Dupré Stéphanie (2024). Spatial distribution of (sub-)outcropping methane-derived authigenic carbonate structures at the outer Aquitaine Shelf. SEANOE. https://doi.org/10.17882/98661
Credit
The marine expedition GAZCOGNE1 (https://doi.org/10.17600/13020070) and GAZCOGNE2 (https://doi.org/10.17600/13030090) were co-funded by TotalEnergies and IFREMER as part of the PAMELA (Passive Margin Exploration Laboratories) scientific project (http://dx.doi.org/10.18142/236).

  Author

Ifremer, Geo-Ocean UMR, France, Plouzané - DUPRÉ Stéphanie  

  Publisher

SEANOE  
Keywords ( Theme )
  • Marine geology
SeaDataNet Parameter Disciplines ( parameter )
  • Marine geology
Use constraints
Other restrictions
Other constraints
Date ( Publication )
2020

  Publisher

American Geophysical Union (AGU)  

  Author

Dupré S.  

  Author

Loubrieu B.  

  Author

Pierre C.  

  Author

Scalabrin C.  

  Author

Guérin C.  

  Author

Ehrhold A.  

  Author

Ogor A.  

  Author

Gautier E.  

  Author

Ruffine L.  

  Author

Biville R.  

  Author

Saout J.  

  Author

Breton C.  

  Author

Floodpage J.  

  Author

Lescanne M.  
Association Type
Cross reference
Initiative Type
Study
Association Type
Cross reference
Initiative Type
Platform
Association Type
Cross reference
Initiative Type
Platform
Metadata language
English
Topic category
  • Oceans
N
S
E
W


Distribution format
  • SHP ( )

OnLine resource
Processed data  

Data - 261 KB

OnLine resource
DOI of the product  
OnLine resource
Seanoe  
Hierarchy level
Dataset
Statement

Metadata

File identifier
seanoe:98661   XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2024-02-06
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0

  Point of contact

 

 
 

  Overviews

Spatial distribution of (sub-)outcropping methane-derived authigenic carbonate structures at the outer Aquitaine Shelf. Background bathymetry from Emodnet, version 2020 (https://www.emodnet-bathymetry.eu/)

Provided by

Access to the portal
Read here the full details and access to the data.

Associated resources

Not available


  •  
  •  
  •