Title
Reconstruction of southwestern Atlantic sea surface temperatures during the last Century: Cabo Frio continental shelf (Brazil)
Date Issued
01 December 2014
Access level
metadata only access
Resource Type
journal article
Author(s)
Universidade Federal Fluminense
Publisher(s)
Elsevier
Abstract
Modern sea surface temperatures (SSTs) were estimated from UK'37 values of ten core-top sediment samples collected under the Cabo Frio upwelling system and validated by comparison with satellite-derived SSTs. UK'37-SSTs were found to reflect annual SST means in the offshore area and seasonal means (winter/spring) in the inshore and central areas. The latter areas are mainly influenced by upwelling processes whereas the offshore area is under the influence of the thermal front of the Brazil Current (BC). SST variability during the last century was then reconstructed from three short sediment cores. The record showed a general cooling trend in the inshore and central areas, suggesting intensification of the upwelling process. The trends at the offshore area reflected oscillations of the BC thermal front, with piling up of warmer BC waters closer to the coast since ca. 1950.
Start page
225
End page
232
Volume
415
Language
English
OCDE Knowledge area
Oceanografía, Hidrología, Recursos hídricos
Subjects
Scopus EID
2-s2.0-84910056000
Source
Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN of the container
00310182
Sponsor(s)
This work was financially supported through the Ressurgência Project by the Geochemistry Network of PETROBRAS/CENPES , by the National Petroleum Agency (ANP) of Brazil (Grant 0050.004388.08.9 ) and by LOCEAN-IPSL (CNRS/IRD/UPMC/MNHN) . We thank the Projeto PRIMO ( CNPq-590172/2011-5 ) for general support, the Ressurgência Project team for the assistance in sampling and sample preparation, and V. Klein and F. Kaczmar at LOCEAN for the analytical assistance. We are grateful to the two anonymous reviewers for their constructive comments that greatly contributed in improving the manuscript.
Sources of information:
Directorio de Producción Científica
Scopus