Adriane Rangel

Adriane Rangel
University of São Paulo | USP · Oceanographic Institute (IO) (São Paulo)

Master of Science

About

8
Publications
1,026
Reads
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34
Citations
Citations since 2016
7 Research Items
34 Citations
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20162017201820192020202120220246810
20162017201820192020202120220246810
20162017201820192020202120220246810
Introduction
Ph.D. Candidate at the Oceanographic Institute of the University of São Paulo focuses on marine geophysics, seismic stratigraphy of clastic systems, sea-level variations and origin, evolution and sedimentary processes on modern continental shelves, incised valleys, and coastal zones.

Publications

Publications (8)
Article
Full-text available
The present study used shallow high-resolution seismic surveys to characterize the architecture and stratigraphic evolution of the last depositional sequence of the São Francisco Delta (SFDS). The sequence was accumulated within a bathymetric low (BL) on the shelf located in front of the São Francisco river. This antecedent topography provided addi...
Article
Submarine canyons play a major role in sediment transfer to the deep sea. When connected with fluvial systems, they can produce large submarine fans, whose sandy bodies have a high potential as petroleum reservoirs. Although canyon-river connections are common on passive margins during lowstands, they are rare during highstands. So far, the only ca...
Article
Full-text available
The São Francisco River is one of the most important rivers in Brazil. The wave-dominated delta at its mouth includes a well-developed muddy clinoform on the adjacent shelf. This study aimed to understand sedimentary organic matter (OM) distribution and the relative contribution of terrestrial/fluvial and marine sources. A dense and evenly distribu...
Article
Foraminifera distribution in surface sediment of the continental shelf is controlled by several environmental factors. Expansion and spreading of fluvial plumes significantly change environmental conditions at shelf areas facing river mouths. The present work contributes with an in situ reference study on the spatial distribution of foraminiferal a...
Poster
Full-text available
O perfil longitudinal típico dos grandes rios é côncavo entre a nascente e a foz. Desvios deste padrão típico com a presença de quebras de declive indicam a atuação de processos tectônicos, eustáticos ou variações litológicas no leito do rio. O presente estudo incide no sector médio do rio São Francisco, o quarto maior rio da América do Sul. Este r...
Article
The present study used shallow high-resolution seismic surveys to characterize the architecture and stratigraphic evolution of the last depositional sequence of the São Francisco Delta (SFDS). The sequence was accumulated within a bathymetric low (BL) on the shelf located in front of the São Francisco river. This antecedent topography provided addi...
Presentation
Full-text available
The shallow (<60m) and narrow (<40km) shelf off east-northeast Brazil makes it difficult to investigate the effects of the last eustatic sea-level rise in the development of the brazilian deltas. In addition, high wave energy results in greater shear stress at the bottom, precluding the development of deltaic clinoforms exhibiting a classical sigmo...
Conference Paper
Full-text available
During the Quaternary, sea level variations combined with sediment input from rivers resulted in the development of fluvial, estuarine and deltaic environments in the valleys of large rivers. The delta of the São Francisco River is internationally considered to be an example of a wave-dominated delta. The present study had the objective of investig...

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Projects

Projects (2)
Project
Given the lack of information and the growing search for understanding the role played by the eustatic and relative sea level variations during the Quaternary in the sedimentation of the Southern Brazilian continental shelf, the present project aims to carry out a sismostratigraphic study and to evaluate how the sea level variations during the Upper Quaternary together with the role played by the hydrodynamic factors controlled the sedimentary dynamics and evolution of this sector of the continental shelf.
Project
Carry out a seismic stratigraphic study of the last depositional sequence accumulated post the Last Glacial Maximum (20 ky BP); evaluate the role played by sea-level rise rates in the accumulation of the last depositional sequence of the São Francisco delta; understand how a sigmoidal clinoform accumulated on a continental shelf so shallow (<50m) and narrow (<30km) and exposed to high energy wave.