2014
DOI: 10.1590/0001-37652014107212
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Particle Fluxes and Bulk Geochemical Characterization of the Cabo Frio Upwelling System in Southeastern Brazil: Sediment Trap Experiments between Spring 2010 and Summer 2012

Abstract: Physical and biogeochemical processes in continental shelves act synergistically in both transporting and transforming suspended material, and ocean dynamics control the dispersion of particles by the coastal zone and their subsequent mixing and dilution within the shelf area constrained by oceanic boundary currents, followed by their gradual settling in a complex sedimentary scenario. One of these regions is the Cabo Frio Upwelling System located in a significantly productive area of Southeastern Brazil, unde… Show more

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Cited by 38 publications
(20 citation statements)
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“…accumulation of OM, mostly from autochthonous processes, was already demonstrated (Oliveira et al, 2013;Albuquerque et al, 2014;Cordeiro et al, 2018). Based on the sediment TOC contents reported by Cordeiro et al (2018), the total brGDGTs contents varied from 5 to 32 µg gTOC −1 , with a sharply decreasing gradient in contents from the coastal to deeper waters ( Figure 3A).…”
Section: Gdgt Distribution and Bit Ir And #Rings Tetra Indicesmentioning
confidence: 58%
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“…accumulation of OM, mostly from autochthonous processes, was already demonstrated (Oliveira et al, 2013;Albuquerque et al, 2014;Cordeiro et al, 2018). Based on the sediment TOC contents reported by Cordeiro et al (2018), the total brGDGTs contents varied from 5 to 32 µg gTOC −1 , with a sharply decreasing gradient in contents from the coastal to deeper waters ( Figure 3A).…”
Section: Gdgt Distribution and Bit Ir And #Rings Tetra Indicesmentioning
confidence: 58%
“…Two samples with the highest contents are close to the Paraíba do Sul River mouth (25 and 50 m depths, transect H), which confirm the role of this river as the main source of brGDGTs to the Campos Basin. In addition, relatively high contents of TOC-normalized brGDGTs (up to 31 µg gTOC −1 ) were also found at shallow stations from transects A and B, in the southern basin near Cabo Frio (Figure 1), suggesting coastal transport of continental materials delivered by small rivers along the coast, including contribution from the Paraíba do Sul river, located further north (Albuquerque et al, 2014).…”
Section: Sources and Fate Of Gdgts In The Marine Environmentmentioning
confidence: 92%
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“…Ocean dynamics control the dispersion of particles by riverine plumes and their subsequent mixing and dilution within coastal and oceanic boundary currents, followed by their gradual sedimentation within the shelf area (Albuquerque et al 2014). All of these sources and processes operate according to their own temporal and spatial constraints, creating a complex scenario for understanding the origins and fates of suspended particles at the ocean margin and their fluxes to the ocean floor (Liu et al 2010, Schmidt et al 2010 The Paraíba do Sul River (PSR) plays an important role in the ecosystem of the southeast continental shelf of Brazil.…”
Section: Introductionmentioning
confidence: 99%
“…These semiarid conditions are attributed to the occurrence of the coastal CFUS. This phenomenon is more intense around Cabo Frio than in the area north of the Cabo de São Tomé due to the change in the shoreline orientation from east–west to north–south, respectively (Albuquerque et al ; Palóczy et al ). Offshore Cabo Frio, the Brazilian Current separates from its bathymetric steering and disintegrates into a series of meso‐scale oceanic eddies, resulting in upwelling along the coast.…”
Section: Geological Settingmentioning
confidence: 99%