Circulation dynamics in the bottom limit layer of the Cruzeiro do Sul rift (Rio Grande Rise; 28S, 39°W--35°S, 32°W)

• Grant number: 20/04315-0
• Support Opportunities: Scholarships in Brazil - Master
• Start date: September 01, 2020
• End date: March 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Oceanography - Physical Oceanography
• Principal Investigator: Ilson Carlos Almeida da SIlveira
• Grantee: Pedro Walfir Martins e Souza Neto
• Host Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The Southwest Atlantic is one of the most unexplored parts of the world ocean. The Rio Grande Rise (RGR) is located in this region and is the largest Plateau of the South Atlantic, presenting the formation of polymetallic crusts, which arouses political and economic interest in the region. The graben Cruzeiro do Sul Rift (CSR) cuts the RGR from northwest to southeast and presents a unique hydrodynamics in the region. Thus, it is extremely important to understand how the flow is inside the graben, especially close to the bottom boundary layer, since it controls the deposition of sediments, a factor that determines the exposure of polymeric crusts. This proposal aims to characterize the circulation patterns within the CSR, with an emphasis on the bottom boundary layer and its surroundings. The development of this work will occur through the analysis of data from the mooring array and profiling of CTD and LADCP obtained by the Marine-Etech project (Proc. FAPESP: 2014/50820-7), in addition to the development of a numerical model. From the analysis, profiles, sections, time series and numerical simulations will be developed to reveal the circulation pattern inside the CSR. (AU)

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)

VILELA-SILVA, FELIPE; SILVEIRA, ILSON C. A.; NAPOLITANO, DANTE C.; SOUZA-NETO, PEDRO W. M.; BILO, TIAGO C.; GANGOPADHYAY, AVIJIT. On the Deep Western Boundary Current Separation and Anticyclone Genesis off Northeast Brazil. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, v. 128, n. 1, p. 21-pg., 2023-01-01. (15/21729-4, 18/06153-7, 20/04315-0)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SOUZA NETO, Pedro Walfir Martins e. The Circulation On The Rio Grande Rise: Mean Flow, Internal Tides, and Eddies. 2022. Master's Dissertation - Universidade de São Paulo (USP). Instituto Oceanográfico (IO/DIDC) São Paulo.