@Article{CamposCVPCKSDAPBM:2020:CoMiCh,
               author = "Campos, Mar{\'{\i}}lia C. and Chiessi, Cristiano M. and 
                         Ven{\^a}ncio, Igor Martins and Pinho, Tain{\~a} M. L. and 
                         Crivellari, Stefano and Kuhnert, Henning and Schmiedl, Gerhard and 
                         D{\'{\i}}az, Rut A. and Albuquerque, Ana Luiza S. and 
                         Portilho-Ramos, Rodrigo C. and Bahr, Andr{\'e} and Mulitza, 
                         Stefan",
          affiliation = "{Universidade de S{\~a}o Paulo (USP)} and {Universidade de 
                         S{\~a}o Paulo (USP)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Universidade de S{\~a}o Paulo (USP)} and 
                         {Universidade de S{\~a}o Paulo (USP)} and {University of Bremen} 
                         and {University of Hamburg} and {Universidade Federal Fluminense 
                         (UFF)} and {Universidade Federal Fluminense (UFF)} and {University 
                         of Bremen} and {Heidelberg University} and {University of 
                         Bremen}",
                title = "Constraining millennial-scale changes in northern component water 
                         ventilation in the western tropical South Atlantic",
              journal = "Paleoceanography and Paleoclimatology",
                 year = "2020",
               volume = "35",
               number = "7",
                pages = "e2020PA003876",
                month = "July",
             abstract = "Negative excursions in the stable carbon isotopic composition 
                         (\δ13C) at Atlantic intermediate to mid\‐depths are 
                         common features of millennial\‐scale events named Heinrich 
                         Stadials. The mechanisms behind these excursions are not yet fully 
                         understood, but most hypotheses agree on the central role played 
                         by the weakening of the Atlantic meridional overturning 
                         circulation. Marine records registering millennial\‐scale 
                         negative \δ 13C excursions in the Atlantic are mostly 
                         restricted to the Heinrich Stadials of the last deglacial, while 
                         the Heinrich Stadials of the last glacial are poorly studied. 
                         Here, we constrain changes in bottom water ventilation in the 
                         western tropical South Atlantic mid\‐depth during Heinrich 
                         Stadials of the last glacial and deglacial by investigating marine 
                         core M125\‐95\‐3. The concurrent decreases in 
                         benthic foraminifera \δ13C and increases in bulk sediment 
                         sulfur indicate an increased Northern Component Water (NCW) 
                         residence time in the western tropical South Atlantic 
                         mid\‐depth during Heinrich Stadials. Furthermore, a 
                         coherent meridional pattern emerges from the comparison of our new 
                         data to previously published mid\‐depth records from the 
                         western South Atlantic. While our record shows the largest 
                         negative \δ13C excursions during almost all Heinrich 
                         Stadials, the western equatorialAtlantic showed medium and the 
                         subtropical South Atlantic showed the smallest negative 
                         excursions. This meridional pattern supports the notion that 
                         during Heinrich Stadials, a reduction in the NCW \δ13C 
                         source signal together with the accumulation of respired carbon at 
                         NCW depths drove the negative \δ13C excursions. We suggest 
                         that the negative \δ13C excursions progressively increase 
                         along the NCW southwards pathway until the signal 
                         dissipates/dilutes by mixing with Southern Component Water.",
                  doi = "10.1029/2020PA003876",
                  url = "http://dx.doi.org/10.1029/2020PA003876",
                 issn = "0031-0182",
             language = "en",
           targetfile = "campos-constrainign.pdf",
        urlaccessdate = "27 abr. 2024"
}