Modeling pollutant dispersion scenarios in high vessel-traffic areas of the Lower Amazon River

Cunha, Alan Cavalcanti da; Abreu, Carlos Henrique Medeiros de; Crizanto, Jonathan Luz Pires; Cunha, Helenilza Ferreira Albuquerque; Brito, Alaan Ubaiara; Pereira, Newton Narciso

doi:10.1016/j.marpolbul.2021.112404

Cited by 23 publications

(65 citation statements)

References 38 publications

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“…Tidal rivers are characterized by oscillatory and nonstationary gradients of water velocity and level and are controlled by interactions between river flow and tides (Abreu et al, 2020;Cunha et al, 2021;Sassi and Hoitink, 2013). The storage and release of water controls the variability in river discharge, water level, and water velocity.…”

Section: Discussionmentioning

confidence: 99%

“…Under natural conditions, tidal rivers usually exhibit temporal variability of their hydrodynamic conditions, including tidal fluctuations and seasonal variations of discharge (Kosuth et al, 2009;Matte, Secretan, and Morin, 2014). The seasonal variability of discharge is a key component of hydrodynamic patterns in river systems, and daily variability is equally important in tidal systems (Abreu et al, 2020;Cunha et al, 2021). During the past two decades, the scientific community has recognized the importance of the lower reaches of rivers and the coastal zone to the global carbon cycle (Borges, 2005;Cai, 2011;Sawakuchi et al, 2017;Wollast, 1998).…”

Section: Introductionmentioning

confidence: 99%

“…Considering the global importance of the Amazon River, investigations related to the drivers and influencing factors of its hydrodynamic behavior are necessary to understand biogeochemical cycles and climate change scenarios (Abreu et al, 2020). In addition, that information is essential to allow future calibration of numerical models (Abreu et al, 2020;Cunha et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…These data can support ecological studies such as the quantification of nutrient flux, greenhouse emissions, sedimentation processes, oxygen balance, mineralization, and primary production. Sanitation issues such as self-depuration, residence time, and dilution capacity may be addressed as well (Abreu et al, 2020;Braunschweig et al, 2003;Cunha et al, 2021;Gagne-Maynard et al, 2017;Sawakuchi et al, 2017;Valerio et al, 2018;Ward et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Seasonal and Daily Variation of Hydrodynamic Conditions in the Amazon River Mouth: Influence of Discharge and Tide on Flow Velocity

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Ward

Richey

et al. 2021

Journal of Coastal Research

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Hydrodynamics characteristics control various biogeochemical processes related to the phenomena of transport of particulate materials, biogeochemical components, and greenhouse emissions; however, the hydrodynamic conditions in the North Channel of the Amazon River Mouth is relatively little understood. The seasonal and tidal variability of hydrodynamic characteristics in the North Channel of the Amazon River Mouth were investigated using an acoustic measurement technique. The measurements of discharge (Q), water velocity (U), and water level (h) were performed during a semidiurnal tidal cycle in a 12 km wide transect during four hydrological seasons. The hydrodynamics are mainly controlled by the river discharge, being directly related to the rain pattern with a well-defined time lapse for the Amazon Basin. The amplitude of the tides, the mean discharge, and the velocity of the natural flow presented during high discharge season were 3 m, 12,423 m 3 s -1 and 1.18 m s -1 , respectively. The analyses of tidal effects showed a phase opposition between the water level, river discharge, and water velocity; the water velocity was~42% higher during the ebb tide with a duration~1 hour and 30 minutes longer than the flood phase. The U and h are inversely proportional (R ¼ -0.72, p , 0.01); significant variations in velocity throughout the tidal cycle are associated with the highest values observed at ebb tide, when the velocity and level of the water are significantly influenced by both diurnal and seasonal components. Thus, the results can contribute to the evaluations of more detailed potential interactions of the advective processes, such as mixing and dilution of passive agents of the natural flow, which are very poorly recorded in the existing literature.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonal and Daily Variation of Hydrodynamic Conditions in the Amazon River Mouth: Influence of Discharge and Tide on Flow Velocity

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Ward

Richey

et al. 2021

Journal of Coastal Research

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“…A região estuarina do baixo Rio Amazonas, e sua zona costeira no Estado do Amapá (Brasil), são formadas por ambientes hidrossedimentares com características biogeoquímicas peculiares. Pela relativa proximidade com o Oceano Atlântico, os rios estuarinos deste trecho apresentam complexa influência hidrológica devido a ação espaçosazonal das marés semidiurnas intermediadas pelo Rio Amazonas que levam à erosão, deposição e variação da qualidade da água (Ward et al, 2013;Abreu et al, 2020;Da Cunha et al, 2021).…”

Section: Introductionunclassified

Qualidade da Água e Hidrodinâmica como Parâmetros Ambientais na Piscicultura de Tanques-Rede no Estuário do Rio Amazonas

Souza¹,

Neto²,

Furtado³

et al. 2021

Rev. Bras. Geog. Fis.

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The cultivation of fish in net cages is an activity sensitive to environmental pollution, but also has the ability to cause environmental impact. The aim of study was to investigate spatial-temporal variations of physico-chemical and microbiological parameters of water quality (WQ) in a stretch of the Matapi River, State of Amapá/Brazil. This study presents an environmental analysis of fish culture on net cages systems, specially hydrodynamic and WQ condictions. Three sampling sites were distributed in ≈15 km of river to quantify variations of the WQ and hydrodynamic parameters. We notice a significant hydrodynamic seasonal influence of the WQ (p <0.05), which presented reduced spatial influence (p>0.05). We observed that both the hydrological-seasonal condictions, tide phase and site localization, explain the variation of WQ in these floodplans area (p<0.05, ANCOVA). We conclude that net cage system presented low environmental impact but local viability, both dependent on hydrodynamic conditions and scale studied.

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Water surface variability in oceanic and estuarine coasts of Amapá, Brazil

Sousa,

Araújo,

da Cunha

2024

Aquat Sci

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Modeling pollutant dispersion scenarios in high vessel-traffic areas of the Lower Amazon River

Cited by 23 publications

References 38 publications

Seasonal and Daily Variation of Hydrodynamic Conditions in the Amazon River Mouth: Influence of Discharge and Tide on Flow Velocity

Seasonal and Daily Variation of Hydrodynamic Conditions in the Amazon River Mouth: Influence of Discharge and Tide on Flow Velocity

Qualidade da Água e Hidrodinâmica como Parâmetros Ambientais na Piscicultura de Tanques-Rede no Estuário do Rio Amazonas

Water surface variability in oceanic and estuarine coasts of Amapá, Brazil

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