نتایج جستجو برای: for swat model

تعداد نتایج: 10950506  

2003
Sabine Grunwald

The objective of the research was to model water quality using the Soil and Water Assessment Tool (SWAT) interfaced with ArcView GIS. SWAT requires the integration of a range of GIS data layers; digital elevation model, soil types, land use, stream networks, water quality monitoring sites, point pollution sources and climatic observations. Prior to modeling water quality with SWAT, ArcView was ...

2014
Adeniyi G. Adeogun Bolaji F. Sule Adebayo W. Salami Michael O. Daramola

Estimation of water yield and water balance in a river catchment is critical to the sustainable management of water resources at watershed level in any country. Therefore, in the present study, Soil and Water Assessment Tool (SWAT) interfaced with Geographical Information System (GIS) was applied as a tool to predict water balance and water yield of a catchment area in Nigeria. The catchment ar...

2017
Ying Zhang Ling Zhang Jinliang Hou Juan Gu Chunlin Huang

Streamflow estimates are substantially important as fresh water shortages increase in arid and semi-arid regions where evapotranspiration (ET) is a significant contribution to the water balance. In this regard, evapotranspiration data can be assimilated into a distributed hydrological model (SWAT, Soil and Water Assessment Tool) for improving streamflow estimates. The SWAT model has been widely...

2008
Fayez A. Abdulla Tamer Eshtawi

Prediction of sediment yield from catchments is essential in the investigation of reservoir sedimentation and other hydrological and geological studies. Many methods have been used in the prediction of sediment yield. Soil and Water Assessment Tool (SWAT) is a newly developed model that can be applied to rural watershed. SWAT model has used Modified Universal Soil Loss Equation (MUSLE) in sedim...

The aims of this project was to assess the capability of SWAT model and SWAT-CUP software in hydrological simulation and to evaluate the uncertainty of SWAT model in estimating runoff in arid and semi-arid watersheds. Model calibration and uncertainty analysis were performed using the Sequential Uncertainty Fitting (SUFI2) algorithm. In the stage of calibration and validation of water flow, per...

Journal: :Journal of environmental quality 2013
Daniel N Moriasi Prasanna H Gowda Jeffrey G Arnold David J Mulla Srinivasulu Ale Jean L Steiner Mark D Tomer

Subsurface tile drains in agricultural systems of the midwestern United States are a major contributor of nitrate-N (NO-N) loadings to hypoxic conditions in the Gulf of Mexico. Hydrologic and water quality models, such as the Soil and Water Assessment Tool, are widely used to simulate tile drainage systems. The Hooghoudt and Kirkham tile drain equations in the Soil and Water Assessment Tool hav...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...

پایان نامه :0 1394

the aim of this thesis is an approach for assessing insurer’s solvency for iranian insurance companies. we use of economic data with both time series and cross-sectional variation, thus by using the panel data model will survey the insurer solvency.

Journal: :پژوهش های جغرافیای طبیعی 0
عطاالله کاویان دانشیار دانشکدة منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری محمد گلشن دانشجوی دکتری آبخیزداری، دانشگاه علوم کشاورزی و منابع طبیعی ساری حامد روحانی استادیار دانشکدة منابع طبیعی، دانشگاه گنبد کاووس اباذر اسمعلی عوری دانشیار دانشکدة منابع طبیعی، دانشگاه محقق اردبیلی

introduction simulations of river flow and understanding different components of hydrologic cycle are important for programming of the conservation aspects of water resources. since the study area is located in the site of dam construction, the estimation of rainfall runoff and sediment yield are very important for better management of water resources. therefore, in this study, the swat model w...

2016
Philip Walter Gassman Michael R. Burkart Richard M. Cruse Rameshwar S. Kanwar Catherine L. Kling

The Soil and Water Assessment Tool (SWAT) model is a continuation of nearly 30 years of modeling efforts conducted by the USDA Agricultural Research Service (ARS). 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 other scientific meetings, and dozen...

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