Wave-driven sediment mobility on the Eastern Brazilian shelf under different weather systems

Oliveira, Kyssyanne Samihra Santos; Quaresma, Valéria da Silva; Nogueira, Izabel Christina Martins; Vieira, Fernanda V.; Bastos, Alex Cardoso

doi:10.1007/s00367-021-00699-3

Cited by 5 publications

(1 citation statement)

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“…The extremely fine grains of tailings increase their settling time (Grilo et al, 2018), which can generate a high-concentration mud suspension and promote the resuspension and dispersion of the tailings through the continental shelf (Quaresma et al, 2020). Our results indicate a possible modern input by the river of a material contaminated by mining in the wet season (rainy periods) and its remaining on the shelf over the years due to meteorological and oceanographic factors (Oliveira et al, 2021).…”

Section: Resultsmentioning

confidence: 76%

Rare earth elements as tracers of iron ore tailings on the Brazilian eastern continental shelf

Cagnin,

Costa,

Longhini

et al. 2023

Integr Envir Assess & Manag

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Iron ore tailings are stored in large dams and pose risks to the environment around the world. In Brazil, the rupture of these dams has become frequent and generated environmental and social concern. Rare earth elements are good tracers of sediment sources and our results indicated chronic contamination of the seabed sediment from the marine region affected by the Fundão Dam tailings since 2015, including areas of environmental protection. This research, carried out between November 2018 and September 2021, with a database of 575 samples, showed a greater contaminated material in the marine region adjacent to the Doce River mouth. Although data suggest prior mining contamination of the Doce River basin, the Fundão episode was an empirical and massive example of the environmental damage caused by these human activities over the centuries, showing that the impact remains in the shallow marine environments for years.

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Section: Resultsmentioning

confidence: 76%