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Variability in the stratification of the upper part of the Brazil Current water column in Abrolhos region: an isotopic approach

Grant number: 14/21028-3
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): November 01, 2014
Effective date (End): October 31, 2015
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geology
Principal researcher:Cristiano Mazur Chiessi
Grantee:Dereck Ebbinghaus Carrari
Home Institution: Escola de Artes, Ciências e Humanidades (EACH). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:12/17517-3 - Response of the Western Atlantic Ocean to changes in the Atlantic meridional overturning circulation: from millennial to seasonal variability, AP.PFPMCG.JP

Abstract

Conceptual and numerical models suggest that abrupt changes in the Atlantic meridional overturning circulation affected the upper water column of the Brazil Current, but this suggestion lacks corroboration. Within this project we will use results from stable oxygen isotopic analyses performed in planktonic foraminifera to: (I) reconstruct the stratification of the upper water column of the Brazil Current around Abrolhos during the last 48.000 years; and (II) verify if the reconstructed changes are related to changes in the strength of the Atlantic meridional overturning circulation.

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