Currents Circulation
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Circulação e massas de água na plataforma continental leste do Ceará: modelagem numérica e observações / Circulation and water masses in continental shelf of Ceará State: numerical modeling and observations
A Plataforma Continental do Estado do Ceará (PCCE) foi dividida em: Plataforma Continental Externa (PCE), Plataforma Continental Média (PCM) e Plataforma Continental Interna (PCI). Os critérios físicos adotados levaram em consideração intrusões mais ou menos intensas de água tropical (AT) transportada pela Corrente Norte do Brasil (CNB) em direção
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/2011
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2. A Dinâmica Sazonal da Plataforma Continental Leste Brasileira entre 10ºS e 16ºS / The Seasonal Dynamics of the Eastern Brazilian Shelf between 10ºS e 16ºS.
A circulação sazonal da Plataforma Continental Leste Brasileira (PCLB) entre 10oS e 16oS é investigada com base em um inédito conjunto de dados in situ e em modelagem hidrodinâmica. Os dados observados possibilitaram a compreensão da dinâmica da circulação em partes específicas da região de estudo e a sua interação com os diversos mecanismos for
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/10/2011
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3. Reconstrução da hidrografia superficial do Atlântico Sul Ocidental desde o Último Máximo Glacial a partir do estudo de foraminíferos planctônicos / Sea surface hydrography reconstruction of the Western South Atlantic since the Last Glacial Maximum based on the study of planktonic foraminifera
The goal of this thesis is to document the paleoclimatic and paleoceanographic changes occurred at the millennial scale since the Last Glacial Maximum at the surface Western South Atlantic. Paleotemperature, paleosalinity and paleoproductivity estimates were obtained for this purpose based on faunal changes of foraminifera assemblages, carbon and oxygen stab
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/03/2010
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4. A finite element model for the ocean circulation driven by wind and atmospheric heat flux
A finite element model for solving ocean circulation forced by winds and atmospheric heat fluxes is presented. It is vertically integrated 1 1/2 layer model which solves the motion and continuity hydrodynamic equations coupled with the advection-diffusion transport equation for temperature. A space-time Petrov-Galerkin formulation is used to minimize the und
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-03
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5. Aplicação do diagrama de Pejrup na interpretação da sedimentação e da dinâmica do estuário da Baía de Marajó-PA
From statistical parameters of the bottom morphology and of the application of the diagram proposed by Pejrup(1988) it was possible to characterize the dynamic and sedimentary processes that occur in the estuary of the Marajó bay. The sediments that recover the bottom of the studied area are formed by medium to very fine sands that grade to coarse to fine s
Publicado em: 2010
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6. Projeto de filtros para atenuação de correntes de modo comum e de sobretensões em acionamentos de motores elétricos utilizando inversores PWM
The use of inverters in most of electrical motor drives applications has been accompanie by several undesirable effects, such as overvoltage at the motor terminals, circulation of common mode currents and electromagnetic interference problems. The determining factors for most of these problems come with the high switching speed and frequency of the semicondu
Publicado em: 2010
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7. Distribution, income rate, chemical composition and identification of plastic pellets emissions at Santos Bay, SP, Brazil / Distribuição, taxa de entrada, composição química e identificação de fontes de grânulos plásticos na Enseada de Santos, SP, Brasil
Among the various pollutants that threaten the ocean are plastic pellets, prime resource in the form of 5mm granules that are being dumped in the environment during production, utilization and transport stages. This project aims to understand of the contamination of the beaches of the Santos Bay, coast of the state of São Paulo, as a pilot area to address t
Publicado em: 2009
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8. Resposta da Plataforma Continental Sudeste a ventos sazonais e sinóticos de verão: estudos numéricos / Response of the South Brazil bight to summer seasonal and synoptic winds: numerical studie
In order to study the pertubations caused on the South Brazil Bigth (SBB) caused by the passage of a cold front during Summer, a mean basic state for currents was obtained using the POM (Princeton Ocean Model) through diagnostic simulation, followed by a short round prognostic. The mean currents modeled are in certain instancies similar to the currents measu
Publicado em: 2008
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9. Transporte de volume e condições hidrográficas no Canal de São Sebastião / Volume transport and hydrographic conditions in the São Sebastião Channel
Current data obtained using an "Acoustic Doppler Current Profiler " (ADCP) towed by a research boat and nearly synoptic hydrographic data were sampled in the São Sebastião Channel (SSC) during six cruises between 2001 and 2006. This study also uses ocean-surface wind fields for the South Brazil Bight (SBB) area derived from the QuikSCAT scatterometer. The
Publicado em: 2008
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10. Análise crítica da utilização de modelagem matemática na avaliação da dispersão de efluentes leves no litoral da Baixada Santista ( Estado de São Paulo). / The analysis of mathematical models in the assessment of effuents dispersion in Baixada Santista coastline (State of São Paulo).
The prediction of the hydrodynamic water circulation and pollutants dispersion, mainly in coastal areas, has been a problem that engineers have been facing. This is due to the increase environmental impacts that involve coastal engineering work and management. The usage of mathematic modeling as assessment tool is necessary for these studies. The main purpos
Publicado em: 2008
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11. Hydrossedimentological features of Maranhão Port Area sediment transport and tidal currents circulation. / Caracterização hidrossedimentológica das correntes de maré e do transporte de sedimentos associado à Área Portuária do Maranhão.
A Área Portuária do Maranhão constitui-se no segundo maior complexo portuário da América Latina e um dos maiores do mundo em termos de movimentação de carga, com mais de 85 milhões de toneladas movimentadas em 2006, isto é mais de 15% da movimentação portuária anual do país. Tendo em vista a grande quantidade de informações disponíveis da reg
Publicado em: 2007
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12. CirculaÃÃo hidrodinÃmica na regiÃo costeira dos municÃpios de Recife e JaboatÃo dos Guararapes durante o verÃo austral
The SisBaHia model system was used to analyze the hydrodynamic circulation and the sediment transport potential on the coastal region of Recife and JaboatÃo dos Guararapes cities during the austral summer. In the first part of the study, the results of the hydrodynamic model were analyzed and compared with the experimental data gathered at sea with the Acou
Publicado em: 2007