Hydrologic Variation
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Estimating design hydrographs at the basin scale: from event-based to continuous hydrological simulation
RESUMO Hidrogramas de projeto são amplamente utilizados em engenharia hidrológica. Típicas aplicações adotam métodos baseados em eventos (EB), utilizando modelos chuva-vazão para converter hietogramas de projeto em hidrogramas. Incertezas incluem a definição de condições antecedentes e a premissa de equivalência entre tempos de retorno da chuva
RBRH. Publicado em: 18/02/2019
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2. AvaliaÃÃo do Impacto das MudanÃas ClimÃticas na Oferta HÃdrica da Bacia HidrogrÃfica do ReservatÃrio Ãros usando os Modelos de MudanÃas ClimÃticas do IPCC-AR4, levando em ConsideraÃÃo as Diversas Incertezas Associadas / Evaluation of the Impact of Climate Change on Water Supply Watershed Reservoir Models using Ãros Climate Change IPCC-AR4, taking into consideration the Various Uncertainties Associated
In the present work flow projections for the basin Ãros (CearÃ) were obtained using the precipitation of global models of the fourth report of the Intergovernmental Panel on Climate Change (IPCC-AR4) for the period 2010 to 2099 the A1B scenario. The flows were generated by the hydrologic model Soil Moisture Account Procedure (SMAP). To obtain these, the pr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/06/2012
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3. Simulação hidrológica de rios com grandes planícies de inundação
Besides understanding the current hydrologic behavior of a river and floodplain drainage system, it is important to be able to predict its future conditions in light of possible impacts due to anthropogenic activities and climate variability. Mathematical modeling is the ideal tool for this purpose. For large scale hydrologic systems, if the objective is to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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4. Conectividade e análise da estrutura taxonômica e trófica da ictiofauna em lagos do rio das Mortes, Mato Grosso - Brasil
This work describes the structure of fish assemblages in relation to environmental characteristics in two lakes with distinct levels of hydrologic connectivity associated to the lower Rio das Mortes, in the Bananal floodplain, Mato Grosso, Brazil. Tartaruga Lake is permanently connected to the main river channel, whereas Cocho Lake is connected to the river
Publicado em: 2009
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5. Estrutura e produtividade da comunidade fitoplanctÃnica de um estuÃrio tropical (SirinhaÃm, Pernambuco, Brasil)
The estuary of SirinhaÃm river located in the district of SirinhaÃm, Southern of Pernambuco state, (8Â34â-8Â37âS e 35Â04â-35Â01âW), was evaluating aiming to catalog the phytoplankton community, estimating its productive capacity, the temporal spatial dynamics and the principal environmental variables that affect its composition. The samplings of th
Publicado em: 2009
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6. Produtividade fitoplactÃnica e hidrologia no ecossistema recifal de Porto de Galinhas (Pernambuco- Brasil)
The Porto de Galinhas beach, located in the south coast of Pernambuco, Brazil, about 50 kilometers from Recife, has coral reef formations that form natural pools of extreme beauty, and thus, actually is undergoing an intense tourist activity, as one of the most visited beaches of Northeastern Brazil. The phytoplankton productivity and biomass and some hydrol
Publicado em: 2009
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7. Procedimentos para aprimorar a regionalização de vazões: estudo de caso da bacia do Rio Grande / Procedures to improve the hydrologic regionalization: study of Rio Grandes basin
The hydrologic regionalization constitutes an efficient instrument to plan and manage the water resources, and it can be used to obtain the hydrological variables, as the maximum, minimum and medium discharges, in a simple and fast way. This technique can minimize the absence of hydrologic information in sites with low or no data availability. However, some
Publicado em: 2008
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8. Proposta conceitual para a regionalização de vazões / Conceptual proposal for the hydrologic regionalization
The knowledge water availability through hydrographic net is fundamental to management water resources concession use rights. Normally this knowledge is restrict to the places where exist fluviométrica measurement station. Hydrologic regionalization is a technical tool to supply lack of information where there are few or no data availability. From a socio-
Publicado em: 2008
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9. Modelagem hidrológica dinâmica distribuída para estimativa do escoamento superficial em uma microbacia urbana
- Floods and inundations are serious problems in Brazilian cities as a result of inappropriate urbanization processes. Impervious surface reduces or makes water infiltration impossible, leading to significant increases in surface runoff. Considering this scenario, this work aims at applying a dynamic distributed hydrological model in order to estimate surfac
Publicado em: 2008
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10. Isotope characterization of the hydrologic cycle components in four sub-basins of the Piracicaba river basin (SP) / Caracterização isotópica dos componentes do ciclo hidrológico em quatro sub-bacias pertencentes à bacia do Rio Piracicaba (SP)
This project had the objective to investigate the oxygen (?18O) and hydrogen (?D) isotopic variation of shallow unconfined aquifers in four regions, in transects defined from the river to the limit of the drainage area. The transects were established within a topographical gradient in four sub-catchments of the Piracicaba river hydrographic basin. The popula
Publicado em: 2008
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11. Distribuição da taxocenose íctica em córregos de cabeceira da bacia do Alto Rio Paraná, DF
Os padrões de distribuição das comunidades biológicas aquáticas ao longo dos riachos são influenciados por diversas variáveis ambientais que operam em escalas espaciais e temporais. Buscando quantificar a contribuição dos gradientes ambientais, espaciais e temporais na estruturação da taxocenose íctica em regiões de cabeceira, o presente estudo
Publicado em: 2008
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12. Aplicação de um modelo computacional tridimensional para estimativa de balanço hídrico em aterros sanitários
The evaluation of leachate generated in the sanitary landfills is one of the most critical and important elements during the design, construction and operation of these landfills. This dissertation aimed at evaluating the Computational Model MODUELO, for the hydrologic simulation of sanitary landfills. The model, which uses a tridimensional discretization of
Publicado em: 2007