The Brazil Current (BC) represents the southern branch of the bifurcation of the South Equatorial Current that interacts with the eastern and southern Brazilian continental margins. The BC plays an important role in controlling the intensity of the South American Monsoon System that, in turn, is responsible for summer precipitation in a large sector of South America. Moreover, the BC is markedly influenced by the Atlantic Meridional Overturning Circulation whose past oscillations generated marked global abrupt climatic changes.Presently, the few paleoceanographic records available from the western South Atlantic do not allow a detailed reconstruction of the changes that happened in the BC during the last glacial cycle.This MSc. project aims at reconstructing the variability of the BC around 32oS during Marine Isotope Stages 1-3, as well as its impacts on the climate of southeastern South America. Therefore, we will investigate two marine sediment cores collected in the southern Brazilian continental margin, in a site under the influence of the BC. We will develop age models based on 14C ages, and produce downcore records of oxygen and carbon stable isotopes in tests of planktonic foraminifera, as well as records of X-ray fluorescence in bulk sediment samples.
News published in Agência FAPESP Newsletter about the scholarship: