Consulta: subjectFacets:"SWAT"
Registros recuperados: 23
Data/hora: 06/06/2024 05:24:51

Potencial para producir Jatropha curcas L. como materia prima para biodiésel en el estado de Veracruz.
Provedor de dados: 32
Autores: Inurreta Aguirre, Héctor Daniel.
Existe gran interés alrededor del mundo en utilizar el aceite de Jatropha curcas L. como materia prima para biodiésel; sin embargo, con el fin de aumentar la eficiencia energética y económica de su cultivo, es necesario identificar áreas con condiciones agroecológicas óptimas y estimar su productividad en zonas marginales para evitar competencia con la producción de alimentos. El objetivo de este trabajo fue conocer la variación del potencial productivo de Jatropha curcas L. en respuesta a las distintas condiciones edafoclimáticas del estado de Veracruz. Se utilizó el modelo Soil and Water Assessment Tool (SWAT) para simular el rendimiento de semilla de Jatropha curcas L. Las unidades de cálculo fueron las Unidades de Respuesta Hidrológica (URH), definidas...
Palavras-chave: SWAT; Modelos de simulación; Zonificación; SIG; Simulation models; Zoning; GIS; Agroecosistemas locales; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/1700

Zonificación del potencial productivo de biomasa para etanol de segunda generación en agroecosistemas con pasto Pennisetum purpureum en el estado de Veracruz.
Provedor de dados: 32
Autores: López Escudero, Roberto de Jesús.
El etanol lignocelulósico generado a partir de la biomasa seca de especies como Pennisetum purpureum puede ser la solución a problemáticas actuales como la crisis energética, la ineficiencia de los biocombustibles de primera generación, el desplazamiento de tierras destinadas al sustento humano y el cambio en el uso de los suelos. Sin embargo, con la finalidad de aumentar la eficiencia energética de esta especie, es necesario identificar áreas con condiciones agroecológicas óptimas que no compitan con la producción de alimentos. Por lo anterior el objetivo de este trabajo fue cartografiar y generar un índice de productividad de Pennisetum purpureum con base a las condiciones agroecológicas del estado de Veracruz. Se utilizó el modelo Soil and Water...
Palavras-chave: Etanol; Pennisetum purpureum; Modelos de simulación; SWAT; URH; Ethanol; Simulation models; Agroecosistemas Tropicales; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2343

El modelo de simulación hidrológica SWAT aplicado en la cuenca del río Amajac, Hidalgo, México
Provedor de dados: 32
Autores: Mata Espinosa, Héctor Armando.
El objetivo de ésta investigación fue realizar una simulación de la producción de agua en la cuenca del río Amajac, Hidalgo, México, mediante la aplicación del modelo hidrológico SWAT (Soil and Water Assessment Tool).  Previamente se realizó una calibración del modelo, ajustando sus parámetros más sensibles, tales como: curva numérica (CN2), capacidad de agua disponible en el suelo, factor de compensación de la evaporación en el suelo, y coeficiente de agua subterránea.  En la etapa de simulación se empleó el Sistema de Información Geográfica Arc View 3.2 y para alimentar el modelo, se utilizó la información climatológica proporcionada por el Servicio Meteorológico Nacional (SMN) para un periodo de cinco años (1996-2000), la información hidrométrica fue...
Tipo: Tesis
Palavras-chave: Simulación; Producción de agua; Modelo hidrológico; SWAT; Maestría; Hidrociencias; Simulation; Water yield; Hydrologic model; SWAT.
Ano: 2008
URL: http://hdl.handle.net/10521/1600

An integrated social and ecological modeling framework&amp;#8212;impacts of agricultural conservation practices on water quality
Provedor de dados: 7
Autores: Dalo&amp;#287;lu, Irem; School of Natural Resources and Environment, University of Michigan; daloglu@umich.edu; Nassauer, Joan Iverson; School of Natural Resources and Environment, University of Michigan; nassauer@umich.edu; Riolo, Rick; Center for the Studies of Complex Systems, University of Michigan; rlriolo@umich.edu; Scavia, Donald; School of Natural Resources and Environment, University of Michigan; Graham Environmental Sustainability Institute, University of Michigan; scavia@umich.edu.
We present a modeling framework that synthesizes social, economic, and ecological aspects of landscape change to evaluate how different agricultural policy and land tenure scenarios and land management preferences affect landscape pattern and downstream water quality. We linked a stylized agent-based model (ABM) of farmers&amp;#8217; conservation practice adoption decisions with a water quality model, the Soil and Water Assessment Tool (SWAT), to simulate the water quality effects of changing land tenure dynamics and different policies for crop revenue insurance in lieu of commodity payments over 41 years (1970&amp;#8211;2010) for a predominantly agricultural watershed of Lake Erie.  Results show that non-operator owner involvement in land management...
Tipo: Peer-Reviewed Reports
Palavras-chave: ABM; Agricultural policy; Agriculture; Conservation practice; Integrated modeling; SWAT; Water quality.
Ano: 2014

Hydrological simulation using SWAT model in headwater basin in Southeast Brazil
Provedor de dados: 70
Autores: Pereira,Donizete dos R.; Martinez,Mauro A.; Almeida,André Q. de; Pruski,Fernando F.; Silva,Demetrius D. da; Zonta,João H.
Hydrological models are important tools that have been used in water resource planning and management. Thus, the aim of this work was to calibrate and validate in a daily time scale, the SWAT model (Soil and Water Assessment Tool) to the watershed of the Galo creek , located in Espírito Santo State. To conduct the study we used georeferenced maps of relief, soil type and use, in addition to historical daily time series of basin climate and flow. In modeling were used time series corresponding to the periods Jan 1, 1995 to Dec 31, 2000 and Jan 1, 2001 to Dec 20, 2003 for calibration and validation, respectively. Model performance evaluation was done using the Nash-Sutcliffe coefficient (E NS) and the percentage of bias (P BIAS). SWAT evaluation was also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hydrological modeling; SWAT; Calibration; Validation.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000400018

Hydrologic model of the Paracatu River Basin: calibration and validation.
Provedor de dados: 14
Autores: WEHLING, M.; RODRIGUES, L. N.; DAM, J. C. van; DIJKSMA, R.
A Bacia do Rio Paracatu é um afluente do Rio São Francisco com uma área total de drenagem de 45.600 km2. O Rio Paracatu é responsável por 24% da vazão do rio São Francisco, com uma descarga média variando entre 200 m3/s e 1.000 m3/s. O uso do solo nessa bacia é predominantemente Cerrado, cuja área diminuiu significativamente nos últimos 30 anos. Atualmente faz-se necessário entender melhor quais serão os impactos nos recursos hídricos advindos das mudanças climáticas e no uso da terra nessa bacia. Esse artigo objetivou preparar, calibrar e validar um modelo de simulação hidrológica para simulação das vazões do rio Paracatu. Para isto, utilizou-se o modelo hidrológico SWAT, que é um modelo físico e distribuído, sendo o clima, a hidrologia, as propriedades...
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Recursos hídricos; Nash Sutcliffe; SWAT; Rio Paracatu; Modelo hidrológico.; Cerrado.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1063711

Modeling of Faecal Contamination in Water from Catchment to Shellfish Growing Area
Provedor de dados: 5
Autores: Bougeard, Morgane; Le Saux, Jean-claude; Perenne, Nicolas; Le Guyader, Soizick; Pommepuy, Monique.
During rainstorms, watersheds can introduce large amounts of faecal pollution into the rivers and sea, leading to shellfish contamination. In this study, we assessed Escherichia coli fluxes from a catchment, and their impact on estuarine water quality, using two assembled models. For the catchment, the agro-hydrological model SWAT was implemented integrating land uses, soil, topography, rainfall and other climatic data on Daoulas watershed (France). Initially, the SWAT model was calibrated and validated for river flow rates, and results were found satisfactory. Subsequently, different faecal contamination sources were integrated into the model: point sources (WWTP discharges into rivers) and non-point sources (manure spreading on fields). During rainfall...
Tipo: Text
Palavras-chave: Modeling; SWAT; MARS; E. coli; Shellfish; Catchment; Estuary.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/00066/17748/15270.pdf

Modeling of Escherichia coli Fluxes on a Catchment and the Impact on Coastal Water and Shellfish Quality
Provedor de dados: 5
Autores: Bougeard, Morgane; Le Saux, Jean-claude; Perenne, Nicolas; Baffaut, Claire; Robin, Marc; Pommepuy, Monique.
The simulation of the impact of Escherichia coli loads from watersheds is of great interest for assessing estuarine water quality, especially in areas with shellfish aquaculture or bathing activities. For this purpose, this study investigates a model association based on the Soil and Water Assessment Tool (SWAT) coupled with a hydrodynamic model (MARS 2D; IFREMER). Application was performed on the catchment and estuary of Daoulas area (France). The daily E. coli fluxes simulated by SWAT are taken as an input in the MARS 2D model to calculate E. coli concentrations in estuarine water and shellfish. Model validation is based on comparison of frequencies: a strong relationship was found between calculated and measured E. coli concentrations for river quality...
Tipo: Text
Palavras-chave: SWAT; Watershed; Estuary modeling; E coli; Shellfish; Water quality.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00033/14393/11728.pdf

The Soil and Water Assessment Tool: Historical Development, Applications, and Future Research Directions
Provedor de dados: 31
Autores: Gassman,   Philip W.; Reyes,   Manuel R.; Green,   Colleen H.; Arnold,   Jeffrey G.
The Soil and Water Assessment Tool (SWAT) model is a continuation of nearly 30 years of modeling efforts conducted by the U.S. Department of Agriculture (USDA), Agricultural Research Service. SWAT has gained international acceptance as a robust interdisciplinary watershed modeling tool, as evidenced by international SWAT conferences, hundreds of SWAT-related papers presented at numerous scientific meetings, and dozens of articles published in peer-reviewed journals. The model has also been adopted as part of the U.S. Environmental Protection Agency's BASINS (Better Assessment Science Integrating Point &amp; Nonpoint Sources) software package and is being used by many U.S. federal and state agencies, including the USDA within the Conservation Effects...
Tipo: Working or Discussion Paper
Palavras-chave: Developmental history; Flow analysis; Modeling; SWAT; Water quality; Resource /Energy Economics and Policy.
Ano: 2007
URL: http://purl.umn.edu/10285

Calibration and Validation of SWAT for the Upper Maquoketa River Watershed
Provedor de dados: 31
Autores: Kanwar,   Ramesh S.; Reungsang,   Pipat; Jha,   Manoj K.; Gassman,   Philip W.; Ahmad,   Khalil; Saleh,   Ali.
A validation study has been performed using the Soil and Water Assessment Tool (SWAT) model with data collected for the Upper Maquoketa River Watershed (UMRW), which drains over 16,000 ha in northeast Iowa. This validation assessment builds on a previous study with nested modeling for the UMRW that required both the Agricultural Policy EXtender (APEX) model and SWAT. In the nested modeling approach, edge-of-field flows and pollutant load estimates were generated for manure application fields with APEX and were then subsequently routed to the watershed outlet in SWAT, along with flows and pollutant loadings estimated for the rest of the watershed routed to the watershed outlet. In the current study, the entire UMRW cropland area was simulated in SWAT, which...
Tipo: Working or Discussion Paper
Palavras-chave: Calibration; Modeling; Nitrate; SWAT; Validation; Water quality; Resource /Energy Economics and Policy.
Ano: 2005
URL: http://purl.umn.edu/18440

THE IMPACTS OF CLIMATE CHANGE ON STREAM FLOW IN THE UPPER MISSISSIPPI RIVER BASIN:  A REGIONAL CLIMATE MODEL PERSPECTIVE
Provedor de dados: 31
Autores: Jha,   Manoj K.; Pan,   Zaitao; Takle,   Eugene S.; Gu,   Roy.
We evaluate the impact of climate change on stream flow in the Upper Mississippi River Basin (UMRB) by using a regional climate model (RCM) coupled with a hydrologic model, the Soil and Water Assessment Tool (SWAT). The SWAT model was calibrated and validated against measured stream flow data using observed weather data and inputs from the Environmental Protection Agency's BASINS (Better Assessment Science Integrating Point and Nonpoint Sources) geographical information/database system. The combined performance of the SWAT and RCM was examined using observed weather data as a lateral boundary condition in the RCM. The SWAT and RCM were found to perform well, especially on an annual basis. The potential impacts of climate change on water yield and other...
Tipo: Working or Discussion Paper
Palavras-chave: Climate change; Hydrological modeling; RCM; SWAT; Uncertainty analysis; Upper Mississippi River Basin; Environmental Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/18403

IMPACT OF WATERSHED SUBDIVISION LEVEL ON FLOWS, SEDIMENT LOADS, AND NUTRIENT LOSSES PREDICTED BY SWAT
Provedor de dados: 31
Autores: Jha,   Manoj K.; Gassman,   Philip W.; Secchi,   Silvia; Gu,   Roy; Arnold,   Jeffrey G.
The size, scale, and number of subwatersheds can affect a watershed modeling process and subsequent results. The objective of this study was to determine the appropriate level of subwatershed division for simulating sediment yield. The Soil and Water Assessment Tool (SWAT) model with a geographic information system interface (AVSWAT) was applied to four Iowa watersheds that varied greatly in drainage area. Annual output was analyzed from each simulation, which was executed for 30 years using climatic data representing the 1970 to 2000 period. The optimal threshold subwatershed size of the total drainage area to adequately predict sediment yield was found to be around 3 percent. Decreasing the size of subwatersheds beyond this level does not significantly...
Tipo: Working or Discussion Paper
Palavras-chave: AVSWAT; Modeling of sediment yield; SWAT; Soil and Water Assessment Tool; Threshold subwatershed size; Watershed subdivision; Resource /Energy Economics and Policy.
Ano: 2002
URL: http://purl.umn.edu/18487

Water Quality Modeling for the Raccoon River Watershed Using SWAT
Provedor de dados: 31
Autores: Jha,   Manoj K.; Arnold,   Jeffrey G.; Gassman,   Philip W.
The Raccoon River Watershed (RRW) in West-Central Iowa has been recognized as exporting some of the highest nitrate-nitrogen loadings in the United States and is a major source of sediment and other nutrient loadings. An integrated modeling framework has been constructed for the RRW that consists of the Soil and Water Assessment Tool (SWAT) model, the interactive SWAT (i_SWAT) software package, Load Estimator (LOADEST) computer program, and other supporting software and databases. The simulation framework includes detailed land use and management data such as different crop rotations and an array of nutrient and tillage management schemes, derived from the U.S. Department of Agriculture's National Resources Inventory databases and other sources. This paper...
Tipo: Working or Discussion Paper
Palavras-chave: Calibration; Management practices; Raccoon River Watershed; SWAT; Resource /Energy Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/18455

Using Carbon Offsets to Fund Agricultural Conservation Practices in a Working-Lands Setting
Provedor de dados: 31
Autores: Reeling,   Carson J.; Gramig,   Benjamin M.
The nitrogen cascade concept indicates that agriculture serves as a significant link between emissions of the potent greenhouse gas (GHG) nitrous oxide and losses of nitrate-N to surface waters.  Conservation practices have the potential to exploit this link, as their implementation is found to reduce fluxes of GHGs and nonpoint source (NPS) water pollution.  Several studies have recognized this link and have documented the potential to improve environmental quality through the use of programs which retire land, the cost of which can be offset by the sale of carbon credits.  However, the ability to use land for both agricultural production and environmental conservation is important.  As such, this study provides a novel analytical framework that is used...
Tipo: Conference Paper or Presentation
Palavras-chave: Greenhouse gases; Nonpoint source pollution; Agricultural conservation practices; DAYCENT; SWAT; Genetic algorithm; Environmental Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/103577

Simulação da produção de sedimentos para a microbacia hidrográfica do Ribeirão dos Marins (SP)
Provedor de dados: 90
Autores: Machado,R. E.; Vettorazzi,C. A.
O modelo SWAT (Soil and Water Assessment Tool) foi aplicado para simular a carga de sedimentos produzida pela microbacia hidrográfica do Ribeirão dos Marins, em Piracicaba (SP), no biênio 1999/2000. A aplicação do modelo requer a entrada dos dados na forma espacializada que foi feita com o auxílio de uma interface entre o modelo e um Sistema de Informações Geográficas (SIG's). A microbacia foi discretizada em sub-bacias para determinar os parâmetros de entrada no modelo. Os resultados obtidos na simulação da produção de sedimentos foram comparados aos dados observados em um posto hidrossedimentométrico, localizado no terço superior da microbacia, utilizando o Coeficiente de Eficiência de Nash e Sutcliffe (COE) e o desvio dos dados simulados em relação aos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Erosão; Modelos hidrológicos; Poluição difusa; SIG's; SWAT.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832003000400018

Simulação de cenários alternativos de uso da terra em uma microbacia utilizando técnicas de modelagem e geoprocessamento
Provedor de dados: 90
Autores: Machado,R. E.; Vetorazzi,C. A.; Xavier,A. C.
O modelo SWAT (Soil and Water Assessment Tool) foi aplicado na simulação de cenários alternativos de uso da terra na microbacia hidrográfica do Ribeirão dos Marins, em Piracicaba (SP), no biênio 1999/2000. Dois cenários foram simulados. No primeiro, o uso atual foi mantido numa faixa de mata ciliar de 30 m em toda a extensão dos cursos d'água e de 50 m ao redor das nascentes, de acordo com o Código Florestal. No segundo cenário, como as pastagens ocupavam 30,9 % da área da microbacia, nas encostas mais íngremes, com alto potencial erosivo, as áreas de pastagem foram substituídas por vegetação florestal. As simulações dos dois cenários foram comparadas com as condições do cenário atual em termos de produção de sedimentos. Os cenários geraram diferentes...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modelos de simulação; Poluição difusa; Sedimentos; SIG's; SWAT.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832003000400017

Impacts of deforestation on water balance components of a watershed on the Brazilian East Coast
Provedor de dados: 90
Autores: Pereira,Donizete dos Reis; Almeida,André Quintão de; Martinez,Mauro Aparecido; Rosa,David Rafael Quintão.
The Brazilian East coast was intensely affected by deforestation, which drastically cut back the original biome. The possible impacts of this process on water resources are still unknown. The purpose of this study was an evaluation of the impacts of deforestation on the main water balance components of the Galo creek watershed, in the State of Espírito Santo, on the East coast of Brazil. Considering the real conditions of the watershed, the SWAT model was calibrated with data from 1997 to 2000 and validated for the period between 2001 and 2003. The calibration and validation processes were evaluated by the Nash-Sutcliffe efficiency coefficient and by the statistical parameters (determination coefficient, slope coefficient and F test) of the regression...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SWAT; Watershed management; Hydrological modeling; Atlantic Forest.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400030

Simulação hidrológica em uma bacia hidrográfica representativa dos Latossolos na região Alto Rio Grande, MG
Provedor de dados: 91
Autores: Andrade,Márcio A.; Mello,Carlos R. de; Beskow,Samuel.
A simulação hidrológica consiste de uma importante ferramenta para subsidiar a gestão dos recursos hídricos em bacias hidrográficas. A bacia hidrográfica em estudo está localizada na região Alto Rio Grande, sul do estado de Minas Gerais, drenando uma área de 32 kmÂ² diretamente para o reservatório da Usina Hidrelétrica de Camargos (UHE - Camargos/Cemig) conhecida como Bacia Hidrográfica do Ribeirão Jaguara (BHRJ). Neste trabalho objetivou-se calibrar e validar o modelo SWAT (Soil and Water Assessment Tool) para a simulação do escoamento superficial na BHRJ. Para isto, o modelo requer mapas georreferenciados de uso atual do solo, unidades pedológicas e modelo digital de elevação, além de dados meteorológicos e hidrológicos. Para este estudo foi aplicada uma...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Modelo hidrológico; SWAT; Escoamento superficial; Balanço hídrico.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013000100010

Estimation of sediment production in oil palm expansion areas in the Amazon
Provedor de dados: 91
Autores: Silva,Antonio K. L.; Sousa,Adriano M. L. de; Santos,Joyse T. S. dos; Villela,João M.; Martorano,Lucieta G.; Crestana,Silvio.
ABSTRACT Currently, an activity that has become strategic at a national level is the cultivation of oil palm (Elaeis guineensis) in the northeast region of the Pará State, in eastern Brazilian Amazon. However, the impacts of this crop expansion on the hydro-sedimentological cycle are still unknown. Therefore, this study estimated the impacts of oil palm crop expansion on sediment production in a sub-basin under consolidated use of this crop. The Soil and Water Assessment Tool (SWAT) model was applied in the Mariquita sub-basin, calibrated by the flow regionalization technique, using data measured in the field with a current meter. Simulation results indicated an increase in sediment production between the years 2008 and 2013, which can be attributed to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SWAT; Ungauged river basin; Secondary forest; Northeastern Pará.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000500344

Uso da terra e perda de solo na Bacia Hidrográfica do Rio Colônia, Bahia
Provedor de dados: 91
Autores: Silva,Vinícius de A.; Moreau,Mauricio S.; Moreau,Ana M. S. dos S.; Rego,Neylor A. C.
Mudanças no uso da terra muitas vezes potencializam a erosão hídrica acarretando perda de água, solo, nutriente e matéria orgânica dos sistemas agrícolas, razão por que se estimou a perda de solo na bacia hidrográfica do rio Colônia, na Bahia, nos últimos vinte e sete anos, utilizando-se o software SWAT (Soil and Water Assessment Tool). Para tal, procedeu-se à digitalização de mapas temáticos, interpretação de fotografias aéreas de 1975; classificação supervisionada de imagens de satélites de 2002 e produção de mapas de uso da terra. O SWAT foi utilizado na obtenção de mapas temáticos digitais por sub-bacia hidrográfica do rio Colônia, quantificação das perdas de solo em cada sub-bacia e nas formas de usos obtidos por conceito teórico, simulando as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Erosão do solo; Modelagem do solo; SWAT.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662011000300013

Aplicabilidad del modelo SWAT para la estimación de la erosión hídrica en las cuencas de México
Provedor de dados: 115
Autores: Rivera-Toral,Francisco; Pérez-Nieto,Samuel; Ibáñez-Castillo,L. Alicia; Hernández-Saucedo,F. Raúl.
El modelo SWAT (Soil and Water Assessment Tool) puede ser una herramienta de gran ayuda en la estimación de sedimentos y escurrimientos, sin embargo, su aplicación tiene algunas limitantes. En este estudio se revisó la aplicabilidad del modelo de simulación hidrológica SWAT en las cuencas de México, aplicándolo a la cuenca Ixtapan del Oro, Estado de México, para estimar la pérdida de suelo, comparando los resultados con los valores estimados mediante la técnica del álgebra de mapas. Se encontró que SWAT subestima el factor topográfico en las subcuencas, sobre todo cuando las pendiente es mayor de 25 %, ya que realiza una mala estimación de la longitud de la pendiente, asignándoles valores constantes de 0.05 m. Ese valor se puede corregir si se estima fuera...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: SWAT; Erosión; Factor topográfico; Ixtapan del Oro.
Ano: 2012
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952012000200001

Calibration, validation and evaluation of a lumped hydrologic model in a mountain area in southern Ecuador
Provedor de dados: 115
Autores: Oñate-Valdivieso,Fernando; Bosque-Sendra,Joaquín; Sastre-Merlin,Antonio; Ponce,V. Miguel.
Abstract In South America the density of meteorological and hydrological stations is low with a minimum number of monitored variables; this limits the application of complex hydrological models for the study of water resources. An alternative may be to use simplified models that need a small number of variables. The study performance of simplified models in scarce information conditions is important in order to know water resources availability in areas with these conditions. The performance of the Temez lumped model and the SWAT model (semi-distributed model) were evaluated with data from six basins at the border region between Ecuador and Peru, with areas that vary between 200 and 2642 km2. Precipitation and temperature recorded in 43 climatological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Temez; Lumped hydrological model; Hydrological models comparison; SWAT.
Ano: 2016
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952016000800945

Hydrological simulation as subside for management of surface water resources at the Mortes River Basin
Provedor de dados: 64
Autores: Eduardo,Eliete Nazaré; Mello,Carlos Rogério de; Viola,Marcelo Ribeiro; Owens,Phillip Ray; Curi,Nilton.
ABSTRACT Hydrological models are tools which describe processes and allow predicting the results of making management decisions, and are an important water resource management tool, especially for small-sized watersheds. This work had as an objective to test different calibration strategies and apply the SWAT model for hydrological simulation of the Mortes River Basin, MG. We evaluated 6 fluviometric stations, with drainage area between 272 and 6070 km² for purposes of water resource management. The evaluation of the model performance was conducted by using Nash-Sutcliffe coefficients (CNS) and percent bias (PBIAS). The results obtained from the statistic indices applied in the analysis of the model performance qualified the SWAT hydrological model as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Environmental management; SWAT; Drainage area; Calibration.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542016000400390