Envri Methane

Type Oceanographic cruise
Ship Mare Nigrum
Ship owner GeoEcoMar - National Inst. of Marine Geology ans Geo-ecology
Dates 01/04/2019 - 08/04/2019
Chief scientist(s) RUFFINE Livio ORCID

GEO-OCEAN - UMR 6538

IFREMER - Technopôle Brest-Iroise

IUEM - Rue Dumont d'Urville

29280 Plouzané

https://www.geo-ocean.fr/

DOI 10.17600/18001189
Objective

In the frame of the E.U. project Envri+, task 4.2 of the WP4 is organized around the development of a joint pilot experiment on a RIs platform at sea to measure methane transfer from the seafloor to the atmosphere. The pilot experiment will develop around joint monitoring strategies for methane detection at various levels starting from the seafloor and moving across the water column, the water/air interface and the atmosphere. The Romanian sector of the Black Sea is the selected location. This area hosts a large number of emission sites of methane-rich gases, from the continental shelf to the deepest part of the basin. It is consequently a good candidate for investigating the fate of marine methane, from the sedimentary column to the atmosphere by combining the expertise and technologies of six EU teams. The methodology applied integrates (1) sampling from the three spheres (lithosphere, hydrosphere and atmosphere) for laboratory measurements of methane concentration by well-proven standard methods together with ?13C-CH4 analysis, (2) in situ measurements of methane concentration and ?13C-CH4 into the water column and the atmosphere, and (3) the deployment of a seafloor observatory for a short monitoring period (4-5 days) to evaluate the temporal variability of gas fluxes.

Sampling operations

Bibliography

Publications

Giunta Thomas, Young Edward D., Labidi Jabrane, Sansjofre Pierre, Jézéquel Didier, Donval Jean-Pierre, Brandily Christophe, Ruffine LivioORCID (2022). Extreme methane clumped isotopologue bio-signatures of aerobic and anaerobic methanotrophy: insights from the Lake Pavin and the Black Sea sediments. Geochimica Et Cosmochimica Acta, 338, 34-53. Publisher's official version : https://doi.org/10.1016/j.gca.2022.09.034 , Open Access version : https://archimer.ifremer.fr/doc/00798/90963/


Grilli Roberto, Birot Dominique, Schumacher Mia, Paris Jean-Daniel, Blouzon Camille, Donval Jean-Pierre, Guyader VivienORCID, Leau Helene, Giunta Thomas, Delmotte Marc, Radulescu Vlad, Balan Sorin, Greinert Jens, Ruffine LivioORCID (2021). Inter-Comparison of the Spatial Distribution of Methane in the Water Column From Seafloor Emissions at Two Sites in the Western Black Sea Using a Multi-Technique Approach. Frontiers In Earth Science, 9(626372), 15p. Publisher's official version : https://doi.org/10.3389/feart.2021.626372 , Open Access version : https://archimer.ifremer.fr/doc/00708/82016/