Análise da renovação das águas do Sistema Estuarino de Santos usando modelagem computacional

Roversi, Fernando; Rosman, Paulo César Colonna; Harari, Joseph

doi:10.4136/ambi-agua.1770

Cited by 22 publications

(12 citation statements)

References 5 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For instance, a study carried out in an estuarine system of Santos Basin (SP), showed the presence of saline plume. The referred author simulated Rt behavior [84] and estimated a value close to 30 days; therefore, when Rt value was compared to results in the present research, such value was relatively close to that of the estuarine system in Santos Basin at the dry period (November); of the period presenting lower rainfall and of the period when there was greater oceanic tide influence over upstream Amazonian estuary. In other words, saltwater is potentially more influential in the estuary at this period [10].…”

Section: Discussionsupporting

confidence: 78%

Hydrodynamic Modeling and Simulation of Water Residence Time in the Estuary of the Lower Amazon River

Abreu

Barros

Brito

et al. 2020

Water

View full text Add to dashboard Cite

Studies about the hydrodynamic behavior in the lower Amazon River remain scarce, despite their relevance and complexity, and the Water Residence Time (Rt) of this Amazonian estuary remains poorly unknown. Therefore, the present study aims to numerically simulate three seasonal Rt scenarios based on a calibrated hydrodynamic numerical model (SisbaHiA) applied to a representative stretch of the lower Amazon River. The following methodological steps were performed: (a) establishing experimental water flow in natural channels; (b) statistically test numerical predictions (tidal range cycles for different hydrologic periods); and (c) simulating velocity fields and water discharge associated with Rt numerical outputs of the hydrodynamic model varied from 14 ≤ Rt ≤ 22 days among different seasonal periods. This change has shown the significant influence of hydrologic period and geomorphological features on Rt. Rt, in its turn, has shown significant spatial heterogeneity, depending on location and stretch of the channels. Comparative analyses between simulated and experimental parameters evidenced statistical correlations higher than 0.9. We conclude that the generated Rt scenarios were consistent with other similar studies in the literature. Therefore, they depicted the applicability of the hydrodynamics to the conservation of the Amazonian aquatic ecosystem, as well as its relevance for biochemical and pollutant dispersion studies, which still remain scarce in the literature.

show abstract

Section: Discussionsupporting

confidence: 78%

Hydrodynamic Modeling and Simulation of Water Residence Time in the Estuary of the Lower Amazon River

Abreu

Barros

Brito

et al. 2020

Water

View full text Add to dashboard Cite

show abstract

“…On the other hand, in developing countries, due to the high rate of urban occupation associated with technological deficiencies and public mismanagement, the discharge of sanitary effluents is one of the most concerning sources of pollution in coastal water bodies (MIRANDA; CASTRO; KJERFVE, 2002;DSIKOWITZKY et al, 2016;ROVERSI et al, 2016;WETZ et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Space time evolution of the trophic state of a subtropical lagoon: Lagoa da Conceição, Florianópolis Island of Santa Catarina, Brazil

Silva

Franco

Fonseca

et al. 2017

RBRH

View full text Add to dashboard Cite

High levels of eutrophication in coastal lagoons due to human activity have been documented worldwide. Among the main impacts observed are anoxia, hypoxia, toxic algal blooms, fish kills, loss of biodiversity and loss of bathing. This study aimed to evaluate the evolution of the trophic state of Lagoa da Conceição, a subtropical lagoon located in an urbanized watershed on the island of Santa Catarina -Brazil. Spatio temporal patterns of stratification and eutrophication were investigated to understand the main biochemical changes over time. The water quality data were obtained from field campaigns supplemented with literature of the last 15 years. The vertical structure of the water column and the trophic state were evaluated by the stratification index and the TRIX index, respectively. Analyses of variance were performed in order to identify possible temporal variations in vertical stratification and trophic level. Eutrophication effects on biogeochemical cycles were verified through a multi-dimensional cluster analysis (MDS) and correlations between variables related to physical, chemical and biological processes were verified by principal component analysis (PCA). The results showed that the water column is homogeneous in all regions except in the central region of the lagoon, and the highest ammonia concentrations and lowest dissolved oxygen concentrations with periods of anoxia are observed in bottom waters. The study looked at the high trophic level of the lagoon and its inability to process the biogeochemical changes imposed by urban development.Keywords: TRIX; Coastal lagoons; Stratification; Hypoxia; Biogeochemical cycles. RESUMONíveis elevados de eutrofização em lagunas costeiras devido à atividade antrópica têm sido documentados no mundo inteiro. Dentre os impactos observados pode-se destacar anoxia, hipoxia, floração de algas tóxicas, mortalidade de peixes, redução da biodiversidade e perda da balneabilidade. O presente estudo teve por objetivo avaliar a evolução do estado trófico da Lagoa da Conceição, uma laguna subtropical localizada em uma bacia hidrográfica urbanizada na Ilha de Santa Catarina -Brasil. Para compreender as principais modificações biogeoquímicas ao longo do tempo foram investigados os padrões espaço-temporais da estratificação e da eutrofização. Os dados de qualidade da água foram obtidos a partir de campanhas de campo complementados com dados da literatura dos últimos 15 anos. A estrutura vertical da coluna da água e o estado trófico foram avaliados pelo o índice de estratificação e o índice TRIX, respectivamente. Análises de variância foram realizadas com o objetivo de identificar possíveis variações temporais na estratificação vertical e no nível trófico. Efeitos da eutrofização nos ciclos biogeoquímicos foram verificados através de uma análise de agrupamento multidimensional (MDS) e correlações entre as variáveis relacionadas a processos físico-químicos e biológicos foram verificadas através da análise de componentes principais (PCA). Os resultados mostraram que há hom...

show abstract

“…No intervalo de 510 a 780 minutos o SisBAHIA mostrou-se também bastante promissor na simulação real da altura de maré. Observou-se neste intervalo uma concordância entre o ICH e o SisBAHIA, mostrando mais uma vez a potencialidade de simulação de níveis de maré pela ICH, tendo em vista que o SisBAHIA é um software bem conceituado nacionalmente pela literatura especializada em cálculos hidrodinâmicos (FEITOSA et al, 2013;ROVERSI et al, 2016).…”

Section: Resultados E Discussão Comparação E Potencialidade Da Ichunclassified

Potencialidade Do Uso De Método Matemático Para Previsão De Maré Astronômica No Porto Da Cidade De Belém-Pa

Progênio¹,

Filho²,

Barbosa³

et al. 2017

Enci Bio

View full text Add to dashboard Cite

Análise da renovação das águas do Sistema Estuarino de Santos usando modelagem computacional

Cited by 22 publications

References 5 publications

Hydrodynamic Modeling and Simulation of Water Residence Time in the Estuary of the Lower Amazon River

Hydrodynamic Modeling and Simulation of Water Residence Time in the Estuary of the Lower Amazon River

Space time evolution of the trophic state of a subtropical lagoon: Lagoa da Conceição, Florianópolis Island of Santa Catarina, Brazil

Potencialidade Do Uso De Método Matemático Para Previsão De Maré Astronômica No Porto Da Cidade De Belém-Pa

Contact Info

Product

Resources

About