Research Grants 20/14356-5 - Sedimentologia, Talude continental - BV FAPESP
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The Santos Bifurcation: present and past

Grant number: 20/14356-5
Support Opportunities:Research Projects - Thematic Grants
Field of knowledge:Physical Sciences and Mathematics - Oceanography - Geological Oceanography
Principal Investigator:Michel Michaelovitch de Mahiques
Grantee:Michel Michaelovitch de Mahiques
Host Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Pesquisadores principais:
Ilana Elazari Klein Coaracy Wainer ; Rubens Cesar Lopes Figueira
Associated researchers:César Barbedo Rocha ; Cesar de Castro Martins ; Luis Americo Conti ; Luiz Antonio Pereira de Souza ; Márcia Caruso Bícego ; Rafael Andre Lourenço ; Renata Hanae Nagai ; Silvia Helena de Mello e Sousa
Associated research grant(s):22/02865-8 - Multi-user equipment approved in grant 20/14356-5: Laser granulometer, AP.EMU
22/02867-0 - Multi-User equipment approved in grant 20/14356-5 ICP-MS, AP.EMU
Associated scholarship(s):24/16858-9 - Reconstruction of changes in the carbonate system in intermediate waters of the Southwest Atlantic over the past 25,000 years through the calibration and application of a new proxy based on calcareous nannofossils, BP.PD
24/04249-8 - Changes in environmental conditions (temperature and [CO3 2-]) of the surface and intermediate waters of the southeastern Brazilian continental margin in the last two millennia based on the geochemical composition of foraminifera tests, BP.MS
24/18181-6 - Radiocarbon geochronology of the Santos Basin continental slope, BP.IC
+ associated scholarships 24/07120-6 - The dynamics of the Santos bifurcation during the last glacial maximum: exploring its relations to the Atlantic meridional circulation, BP.DR
24/02937-4 - Paleoceanographic changes on the Brazilian S/SE continental margin during the Last Glacial Cycle: A multiproxy approach, BP.DR
24/04985-6 - Molecular and isotopic markers in the Santos Bifurcation region, BP.TT
24/04114-5 - Geochemical signatures of sediments in the Santos Bifurcation region: a paleoceanographic reconstruction, BP.TT
23/17753-3 - Paleoceanographic variations in the Santos Bifurcation: molecular organic markers as indicators of seawater temperature and organic matter input, BP.DR
23/15181-2 - Isotopic and elemental analyses in foraminifera from the Santos Bifurcation, BP.TT
23/14747-2 - Morphotectonics in the region of the Santos Bifurcation, BP.TT
23/09027-0 - Climate crisis influence in the mesopelagic ichthyofauna during the Anthropocene, BP.PD
23/14751-0 - Use of benthic foraminifera as proxy of environmental assessment during the Holocene in the northern region of Santos Basin, BP.IC
23/10872-7 - Grain size populations and estimate of ocean currents in the santos Bifurcation, BP.IC
23/05107-0 - Continental slope morphology in the Santos Bifurcation area of influence, BP.MS
23/05036-5 - Geochemical signatures of sediments in the Santos Bifurcation region: a paleoceanographic reconstruction, BP.TT
23/05207-4 - Radiomatric and grain-size analyses in the geological record of the Santos Bifurcation region, BP.TT
22/13955-8 - Distribution of the natural radioactive elements in cores of the santos Bifurcation (South Atlantic), BP.IC
22/09631-2 - Analysis of grain-size populations and estimates of paleocurrents associated with the flow of the Antarctic intermediate water, on the slope of Santos Basin, BP.IC
21/04984-1 - Paleoceanographic evolution of the Western South Atlantic Ocean circulation: a hotspot of evidence for global climate changes, BP.PD - associated scholarships

Abstract

Studies on the geological record of the Antarctic Intermediate Water in the Southwest Atlantic are quite scarce, despite its fundamental role in the southern circulation. This water mass, transported by the Subtropical Gyre, undergoes a bifurcation when reaching the South Atlantic's west margin, forming the Santos Bifurcation.In this project, we propose to study the Santos Bifurcation at different time scales, in an interdisciplinary approach, which involves its spatial variability over tens to thousands of years. When studying the Bifurcation variability, the authors understand that it is possible to recognize the Antarctic Intermediate Water's variability. The methodological approach involves everything from current velocity measurements to paleoceanographic analyzes involving the study of cores and large-scale modeling. The project involves researchers from three institutes in São Paulo, one from Paraná and one from the United States. (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
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Scientific publications
(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)
DE MAHIQUES, MICHEL MICHAELOVITCH; NAGAI, RENATA HANAE; DIAS, GILBERTO PEREIRA; FIGUEIRA, RUBENS CESAR LOPES. An 80 kyr record of intermediate-depth water flow on the western South Atlantic margin. SEDIMENTOLOGY, v. N/A, p. 13-pg., . (10/06147-5, 14/08266-2, 20/14356-5)
SCHATTNER, U.; ROCHA, C. B.; RAMOS, R. B.; SHTOBER-ZISU, N.; LOBO, F. J.; DE MAHIQUES, M. M.. Lateral shift from turbidite- to contourite-dominated continental slope, a case study from southeast Brazil slope. Geomorphology, v. 447, p. 11-pg., . (20/14356-5)
PERES, FRANCIELLI V.; PAULA, FABIANA S.; BENDIA, AMANDA G.; GONTIJO, JULIA B.; DE MAHIQUES, MICHEL M.; PELLIZARI, VIVIAN H.. Assessment of prokaryotic communities in Southwestern Atlantic deep-sea sediments reveals prevalent methanol-oxidising Methylomirabilales. SCIENTIFIC REPORTS, v. 13, n. 1, p. 12-pg., . (20/14356-5, 10/06147-5, 14/08266-2)

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