@Article{CornaggiaBeGiSiNaJo:2020:AbOcCi,
               author = "Cornaggia, Flaminia and Bernardini, Simone and Giorgini, Martino 
                         and Silva, Gabriel Lucas Xavier da and Nagy, Andr{\'e} Istvan M. 
                         Nagy and Jovane, Luigi",
          affiliation = "{Universidade de S{\~a}o Paulo (USP)} and {Universit{\`a} Roma 
                         Tre} and {Universidade de Bras{\'{\i}}lia (UnB)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Faculdade Sul 
                         Americana} and {Universidade de S{\~a}o Paulo (USP)}",
                title = "Abyssal oceanic circulation and acidification during the Middle 
                         Eocene Climatic Optimum (MECO)",
              journal = "Scientific Reports",
                 year = "2020",
               volume = "10",
               number = "1",
                pages = "e6674",
                month = "Dec.",
             abstract = "The Middle Eocene Climatic Optimum (MECO) is a global warming 
                         event that occurred at around 40Ma and lasted about 500 kyr. We 
                         study this event in an abyssal setting of the Tasman Sea, using 
                         the IODP Core U1511B-16R, collected during the expedition 371. We 
                         analyse magnetic, mineralogical, and chemical parameters to 
                         investigate the evolution of the sea bottom conditions at this 
                         site during the middle Eocene. We observe signifcant changes 
                         indicating the response to the MECO perturbation. Mn oxides, in 
                         which Mn occurs under an oxidation state around +4, indicate a 
                         high Eh water environment. A prominent Mn anomaly, occurring just 
                         above the MECO interval, indicates a shift toward higher pH 
                         conditions shortly after the end of this event. Our results 
                         suggest more acid bottom water over the Tasman abyssal plain 
                         during the MECO, and an abrupt end of these conditions. This work 
                         provides the frst evidence of MECO at abyssal depths and shows 
                         that acidifcation afected the entire oceanic water column during 
                         this event.",
                  doi = "10.1038/s41598-020-63525-3",
                  url = "http://dx.doi.org/10.1038/s41598-020-63525-3",
                 issn = "2045-2322",
             language = "en",
           targetfile = "cornaggia_abyssal.pdf",
        urlaccessdate = "27 abr. 2024"
}