Influence of Hydrological Factors on the Distribution of Methane Fields in the Water Column of the Bransfield Strait: Cruise 87 of the R/V “Academik Mstislav Keldysh”, 7 December 2021–5 April 2022

Within the framework of expedition research “Complex studies Antarctic marine ecosystem in areas transport and interaction water masses Atlantic sector Antarctica, Scotia Sea Drake Strait” (cruise 87 R/V “Academik Mstislav Keldysh”, 7 December 2021–5 April 2022), distribution gas-geochemical fields methane Bransfield Strait was studied detail for first time. The connection with complex hydrological regime strait has been revealed. Elevated values concentrations brought to warm current flow from Bellingshausen have established. Low also mark cold waters Weddell Sea, which carry out transit into Ocean. carried within theme FWMM-2022-033 “Integrated environmental Southern Ocean” AAAA17-117030110035-4 international obligations Russian Federation as a party Treaty Convention on Conservation Marine Living Resources.