High resolution climate record for the last climatic cycle in the subtropical SW Atlantic

• Grant number: 13/50224-2
• Support Opportunities: Regular Research Grants
• Start date: August 01, 2013
• End date: July 31, 2015
• Field of knowledge: Physical Sciences and Mathematics - Oceanography - Geological Oceanography
• Agreement: Universidad de Salamanca
• Principal Investigator: Karen Badaraco Costa
• Grantee: Karen Badaraco Costa
• Principal researcher abroad: José-Abel Flores Villarejo
• Institution abroad: Universidad de Salamanca (USAL), Spain
• Host Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 11/18873-5 - Submillennial timescale paleoclimatic records during last Interglacial sensu lato (~130-71 krys), based in foraminifera and geochemistry, in the Southwestern South Atlantic, AP.PFPMCG.R

Abstract

The study site KF-12, retrieved in the SW Atlantic (Brazilian Margin) is proposed to carry out the reconstruction of sea-surface and deep ocean conditions during the last climate cycle in a region with deep and bottom waters influenced both by north and south dynamics. The main objective is to obtain several climate parameters to have a continuous record that can be used to identify climatic events with sub-millennial frequencies previously observed in other oceanic provinces and latitudes, as well as in continental ice-cores, to analyze the degree of synchronicity and the relationship existing between hemispheres and/or other regional processes and their correspondence with critical climatic parameters like the CO2 concentration. For these goals it is planned the study of different micropaleontological groups, together other biogeochemical techniques. A robust age-model is available for the proposed site, previously developed for the applicant team. A detailed analysis of the microfossil assemblages will permit to apply for statistical techniques to obtain paleotemperatures, as well new paleoproductivity proxies (AU)

Scientific publications

(5)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

TOLEDO, FELIPE A. L.; QUADROS, JULIANA P.; CAMILLO, JR., EDMUNDO; SANTAROSA, ANA CLAUDIA A.; FLORES, JOSE-ABEL; COSTA, KAREN B.. Plankton biochronology for the last 772,000 years from the western South Atlantic Ocean. MARINE MICROPALEONTOLOGY, v. 127, p. 50-62, SEP 2016. (13/50224-2)

COSTA, K. B.; CABARCOS, E.; SANTAROSA, A. C. A.; BATTAGLIN, B. B. F.; TOLEDO, F. A. L.. A multiproxy approach to the climate and marine productivity variations along MIS 5 in SE Brazil: A comparison between major components of calcareous nannofossil assemblages and geochemical records. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 449, p. 275-288, MAY 1 2016. (13/50224-2)

DE ALMEIDA, FABIANA K.; DE MELLO, RENATA M.; COSTA, KAREN B.; TOLEDO, FELIPE A. L.. The response of deep-water benthic foraminiferal assemblages to changes in paleoproductivity during the Pleistocene (last 769.2 kyr), western South Atlantic Ocean. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 440, p. 201-212, DEC 15 2015. (13/50224-2)

COSTA, KAREN BADARACO; CAMILLO JR, EDMUNDO; AOKI SANTAROSA, ANA CLAUDIA; IWAI, FABIANE SAYURI; DE QUADROS, JULIANA PEREIRA; LEIPNITZ, ITAMAR IVO; DE LIMA TOLEDO, FELIPE ANTONIO. MENARDIIFORM PLANKTONIC FORAMINIFERA STRATIGRAPHY FROM MIDDLE PLEISTOCENE TO HOLOCENE IN THE WESTERN SOUTH ATLANTIC. Revista Brasileira de Paleontologia, v. 21, n. 3, p. 225-237, SEP-DEC 2018. (13/50224-2)

GONZALES, MARIANE V.; DE ALMEIDA, FABIANA K.; COSTA, KAREN B.; SANTAROSA, ANA CLAUDIA A.; CAMILLO, JR., EDMUNDO; DE QUADROS, JULIANA P.; TOLEDO, FELIPE A. L.. HELP INDEX: HOEGLUNDINA ELEGANS PRESERVATION INDEX FOR MARINE SEDIMENTS IN THE WESTERN SOUTH ATLANTIC. JOURNAL OF FORAMINIFERAL RESEARCH, v. 47, n. 1, p. 56-69, JAN 2017. (13/50224-2)