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@Article{Portilho-RamosCBRMVSRVCS:2018:MeReSo,
               author = "Portilho-Ramos, R. C. and Cruz, A. P. S. and Barbosa, C{\'a}tia 
                         F. and Rathburn, A. E. and Mulitza, S. and Venancio, Igor Martins 
                         and Schwenk, Tilmann and R{\"u}hlemann, C. and Vidal, L. and 
                         Chiessi, Cristiano M. and Silveira, C. S.",
          affiliation = "{University of Bremen} and {Universidade Federal Fluminense (UFF)} 
                         and {Universidade Federal Fluminense (UFF)} and {California State 
                         University Bakersfeld} and {University of Bremen} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {University of Bremen} 
                         and {Federal Institute for Geosciences and Natural Resources} and 
                         {Aix-Marseille University} and {Universidade de S{\~a}o Paulo 
                         (USP)} and {Universidade Federal Fluminense (UFF)}",
                title = "Methane release from the southern Brazilian margin during the last 
                         glacial",
              journal = "Scientific Report",
                 year = "2018",
               volume = "8",
                pages = "e5948",
                month = "Apr.",
             abstract = "Seafloor methane release can significantly affect the global 
                         carbon cycle and climate. Appreciable quantities of methane are 
                         stored in continental margin sediments as shallow gas and hydrate 
                         deposits, and changes in pressure, temperature and/or 
                         bottom-currents can liberate significant amounts of this 
                         greenhouse gas. Understanding the spatial and temporal dynamics of 
                         marine methane deposits and their relationships to environmental 
                         change are critical for assessing past and future carbon cycle and 
                         climate change. Here we present foraminiferal stable carbon 
                         isotope and sediment mineralogy records suggesting for the first 
                         time that seafloor methane release occurred along the southern 
                         Brazilian margin during the last glacial period (40-20 cal ka BP). 
                         Our results show that shallow gas deposits on the southern 
                         Brazilian margin responded to glacial-interglacial 
                         paleoceanographic changes releasing methane due to the synergy of 
                         sea level lowstand, warmer bottom waters and vigorous bottom 
                         currents during the last glacial period. High sea level during the 
                         Holocene resulted in an upslope shift of the Brazil Current, 
                         cooling the bottom waters and reducing bottom current strength, 
                         reducing methane emissions from the southern Brazilian margin.",
                  doi = "10.1038/s41598-018-24420-0",
                  url = "http://dx.doi.org/10.1038/s41598-018-24420-0",
                 issn = "2045-2322",
           targetfile = "portilho_methane.pdf",
        urlaccessdate = "30 nov. 2020"
}


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