Características da hidrografia, circulação e transporte de sal: Barra de Cananéia, Sul do Mar de Cananéia e Baía do Trapandé

Bérgamo, Alessandro Luvizon; Miranda, Luíz Bruner de

doi:10.11606/d.21.2000.tde-27052004-190010

Cited by 29 publications

(41 citation statements)

References 14 publications

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“…Therefore, the dimensionless depth was estimated using Equation 1 (MIRANDA et al, 2002), where the vertical axis is zero at the bottom and 1 at the surface: With these new dimensionless heights, the cubic spline method indicated by Miranda et al (2002), Bérgamo (2000) and Cavalcante et al (2013) was used in order to interpolate velocity values. According to these authors, this method improves the data adjustment through a third-degree polynomial.…”

Section: Field Measurementsmentioning

confidence: 99%

Hydrodynamics of a tropical estuary: Buranhém River, Porto Seguro, Brazil

Silva

Bernardes

Assireu

et al. 2018

RBRH

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Estuaries are dynamic environments that are highly vulnerable to anthropogenic influences, especially when adjacent to urban areas. In this study it is assessed for the first time the hydrodynamic characteristics of the Buranhém estuary (Northeast Brazil). The aim is to define the salt transport mechanisms and the hydrodynamics and stratification patterns of this tropical estuary, under both spring and neap tidal conditions. Fieldwork was carried out during 8 days covering varying tidal range conditions (July 30 th to August 7 th , 2015). Salinity and temperature were continuously monitored at moored stations at both the surface and bottom, whereas velocity profile was sampled by a bottom-mounted instrument. Average velocity in the water column was 0.46 m.s -1 during flood tides and 1.0 m.s -1 during ebb tides. Residual currents were seaward, with ebb dominance. The dominant salt transport mechanism is turbulent diffusion. Most of the layer Richardson values did not exceed 2, indicating well mixed conditions mainly during spring tides. Stratification varies with tide condition, with spring tides being able to further mix the vertical structure. Vertical velocity gradients that generate vertical mixing overcome the stabilizing effects generated by vertical density gradients.

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Section: Field Measurementsmentioning

confidence: 99%

Hydrodynamics of a tropical estuary: Buranhém River, Porto Seguro, Brazil

Silva

Bernardes

Assireu

et al. 2018

RBRH

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“…Assim potenciais extrapolações destes padrões através de redução de escala podem ser inapropriadas (Schneider 2001), sobretudo, neste caso, onde a força do gradiente estuarino regional pode obscurecer fenômenos locais, como aqueles dentro de um setor do estuário (Chagas et al 2006 (Miyao et al 1986;Schaeffer-Novelli et al 1990, Bergamo 2000, BarreraAlba et al 2009, Conti et al 2011. Apesar de evidências indicarem relativa persistência sazonal na cunha salina da baía (Miyao et al 1986;Bergamo 2000), pulsos episódicos de descarga continental podem provocar sua retração à jusante Conti et al 2011).…”

Section: Rueda and Defeo 2003)unclassified

“…Apesar de evidências indicarem relativa persistência sazonal na cunha salina da baía (Miyao et al 1986;Bergamo 2000), pulsos episódicos de descarga continental podem provocar sua retração à jusante Conti et al 2011). Este estudo foi conduzido sob tal cenário, com chuvas no início do período chuvoso 60% acima da média histórica (fig.…”

Section: Rueda and Defeo 2003)unclassified

“…2d); (II) a baía é habitada sazonalmente por recrutas , indicando que sazonalidade pode expressar-se por recrutamentos (Sheaves et al 2010); (III) a influência marinha (i.e. salinidade e concentração de oxigênio), exposição à ondulação e sujeição às correntes de maré são maiores na foz do que na área interna da baía , Bergamo 2000, Barcellos 2005, Conti et al 2011). Esta hidrodinâmica é um forte determinante da topografia de fundo, produzindo consistente aumento na variabilidade batimétrica da zona interna à desembocadura , Barcellos 2005, Conti et al 2011 canal exerce influência na baía, à qual provê substancial aporte de lamas e água doce (Bernardes & Miranda 2001;Mahiques et al 2009;Conti et al 2011).…”

Section: Rueda and Defeo 2003)unclassified

“…Esta hidrodinâmica é um forte determinante da topografia de fundo, produzindo consistente aumento na variabilidade batimétrica da zona interna à desembocadura , Barcellos 2005, Conti et al 2011 canal exerce influência na baía, à qual provê substancial aporte de lamas e água doce (Bernardes & Miranda 2001;Mahiques et al 2009;Conti et al 2011). As marés no estuário são semi-diurnas, com ineqüidades diurnas e amplitudes máximas de 1.25 m (Bergamo 2000). A precipitação (média anual = 2200 mm) e a temperatura da água (média anual de 21 C) exibem clara sazonalidade, sendo maiores no verão (25°C, 267 mm) e menores no inverno (17°C, 95 mm; Bergamo 2000).…”

Section: Rueda and Defeo 2003)unclassified

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Padrões ecológicos locais e multidecadais da ictiofauna do estuário Cananéia-Iguape

Contente¹

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Estimating river discharge from rainfall satellite data through simple statistical models

Birocchi

Silva

Sasaki

et al. 2023

Theor Appl Climatol

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Quantitative knowledge of river discharge measurements is essential for understanding coastal and estuarine dynamics and salinity variations. However, direct measurements are scarce for a large portion of rivers in Brazil. In this study, ve simple models based on remote sensing and local rainfall datasets (MERGE) from the Ribeira de Iguape catchment are used to estimate the Valo Grande Channel (VGC) discharge on the southeastern coast of Brazil. These models use linear, quadratic, exponential and two different multiple linear regression methods. The predicted VGC discharge time series resulting from each model is compared with the estimated time series based on in situ data from the Water and Electric Energy Department (DAEE in Portuguese). The estimated time series presented reasonable results, with skills varying from 0.84 to 0.92 and Nash-Sutcliffe e ciency (NSE) indices varying from 0.54 to 0.75, with the highest values corresponding to the multiple linear regression models. This methodology allowed us to reproduce longer time series at a daily frequency, as well as monthly averages between 2000 and 2020.

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Características da hidrografia, circulação e transporte de sal: Barra de Cananéia, Sul do Mar de Cananéia e Baía do Trapandé

Cited by 29 publications

References 14 publications

Hydrodynamics of a tropical estuary: Buranhém River, Porto Seguro, Brazil

Hydrodynamics of a tropical estuary: Buranhém River, Porto Seguro, Brazil

Padrões ecológicos locais e multidecadais da ictiofauna do estuário Cananéia-Iguape

Estimating river discharge from rainfall satellite data through simple statistical models

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