Sediment Transport Model
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. MODELING OF PHOSPHORUS LOSSES BY WATER EROSION
ABSTRACT Phosphorus losses in runoff water and eroded sediment may increase the risk of eutrophication. Erosion prediction models can be used to assess and quantify nutrient losses and transport in different soil management scenarios. This study aimed to assess the performance of models to estimate the losses of available phosphorus in eroded sediments and a
Eng. Agríc.. Publicado em: 2018-01
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2. MODELING OF WATER, SEDIMENT AND PHOSPHORUS LOADS IN AN AGRICULTURAL WATERSHED IN SOUTHERN BRAZIL / MODELAGEM DO ESCOAMENTO, DA PRODUÇÃO DE SEDIMENTOS E DA TRANSFERÊNCIA DE FÓSFORO EM BACIA RURAL NO SUL DO BRASIL
Areas under intensive tobacco crop cultivation have been impacting the water balance and increasing soil erosion in Southern Brazil. Application of large amounts of mineral fertilizers, higher than the tobacco requirement, contributes to excessive phosphorus loads in soil and water bodies. The assessment of potential environmental impacts due to changes in l
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/03/2011
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3. Impacto de condicionantes hidrológicas na definição de traçados rodoviários : aplicação na rodovia TO-247
The contribution of this research is given by the design of effective impacts of highways, through the expansion of the influence areas beyond the linear tracks, adding the assessment of the environmental sensitivity of watersheds in order to optimize the layout of road projects. It was produced an orderly and systematic approach of the cause and consequence
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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4. Avaliação da produção de sedimento na bacia hidrográfica do rio Potengi através do modelo SWAT
Anthropic disturbances in watersheds, such as inappropriate building development, disorderly land occupation and unplanned land use, may strengthen the sediment yield and the inflow into the estuary, leading to siltation, changes in the reach channel conformation, and ecosystem/water quality problems. Faced with such context, this study aims to assess the ap
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/12/2010
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5. Dinâmica da desembocadura do rio Itanhém, Alcobaça, BA / Morphodynamics at the Itanhaém Inlet, Alcobaça, BA
The morphodynamic processes at inlet systems are related to a variety of forcing conditions that create unique hydrodynamic conditions. The interaction of tidal currents, wave conditions, and river discharge at different levels result in complex dynamic patterns. The present work aims to understand the processes that control the dynamics of the Itanhaém Riv
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/10/2010
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6. Deficit of sand in a sediment transport model favors coral reef development in Brazil
Este trabalho mostra que a localização dos recifes de coral ao longo dos litorais leste e nordeste do Brasil, em uma aproximação de primeira ordem, parece ser controlada pelo déficit de sedimentos no sistema costeiro. O padrão de transporte de sedimentos definido por modelagem numérica a partir de diagramas de refração de ondas, representando cerca
Anais da Academia Brasileira de Ciências. Publicado em: 2008-03
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7. SEDIMENT ACUMULATION AND TRANSPORT IN THE MICRODRAINAGE: MONITORING AND MODELING. / ACUMULAÇÃO E TRANSPORTE DE SEDIMENTOS NA MICRODRENAGEM: MONITORAMENTO E MODELAGEM
This research aims to contribute to understanding the acumulation and distribuitions process of sediments in the urban microdrainage, through monitoring the dry sediments in gutter of asphalted streets, sedimentologic monitoring in the outflow of microdrainage and the use of SWMM model to better understand the process involved. We collected dry samples sedim
Publicado em: 2008
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8. 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
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9. AplicaÃÃo de um modelo paramÃtrico para a estimativa do transporte de sedimentos arenosos na Bacia de Campos / Application of a parametric model to assess the sandy sediment transport in the Campos Basin
Studies about sediment transport processes that occur in the Campos Basin are of great importance, since they can contribute for example to improve the comprehension of how the sedimentary deposits, that are potential oil reservoirs, take form or to provide elements that can help to understand the changes in marine bed forms on areas where submarine pipeline
Publicado em: 2006
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10. Modelagem do Escoamento Superficial e da ErosÃo HÃdrica na Sub-bacia HidrogrÃfica do RibeirÃo Marcela, Alto Rio Grande - MG / Surface runoff and erosion modeling in Marcela watershed, Alto Rio Grande region, MG.
The inadequate management of the soil and water resources has produced serious ecological, economical and social impacts. Watersheds are important environmental units which supply water for reservoirs, urban regions and farms. Water cycle dynamic in watershed is being seriously affected by soil erosion and sediment transport. This investigation goals to stud
Publicado em: 2006
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11. A WATERSHED INFORMATION SYSTEM (WIS) FOR WATER QUALITY ANALYSES
Assessments of water quality in surface water bodies are increasingly incorporating both point and non-point pollutant sources. Water quality constituents are transported in the water as well as on the sediments. Predictions of constituent concentrations in the water and on the sediments require simulation models of water and sediment transport processes ove
Publicado em: 2005
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12. Dinâmica Costeira dos Campos petrolíferos Macau/Serra, litoral setentrional do Estado do Rio Grande do Norte
This thesis describes the general behavior of the northern shore of the State of Rio Grande do Norte relating beach profile morphology with hydrodynamic and sedimentological parameters. The Macau and Serra Oil Field are inserted on this area and are under accelerated coastal erosion. At these oil fields are installed oil wells from PETROBRAS, nowadays locate
Publicado em: 2005