نتایج جستجو برای: bakhtegan catchment

تعداد نتایج: 12282  

ژورنال: علوم آب و خاک 2004
علیرضا زارعی, , احمد ابریشم‌چی, , سیدسعید اسلامیان, ,

An approach for regional low flow frequency analysis is to use multiple regression techniques for obtaining relationships between low flows with specific return periods and catchments characteristics. In this paper, this method has been used. After single-site frequency analysis for 20 stream gauging stations, homogeneity test was performed. Regional relationships between low flows with return ...

2000
M. Radwan P. Willems A. El-Sadek J. Berlamont

Hydrological, hydrodynamic and water quality models are often used to simulate surface water in a correct way to be a good basis for decisions regarding the development and management of water resources. Molenbeek is one of the main tributaries of the River Dender basin (Belgium). The hydraulic model is implemented by using the MIKE 11 software of the Danish Hydraulic Institute (DHI). It is a v...

In this study, the pollution of the Revenj River sediments with heavy elements has been studied. Revenj River catchment with an area of ​​131 Km2 is located 20 kilometers from the city of Torbat-e-Jam (northeast of Iran). To investigate the contamination of sediments with heavy elements, 15 samples of sediments were taken from the area and analyzed by ICP-MS. In order to monitor the contamina...

2005
I. K. Diadovski

We offer a model for integrated water quality management. The proposed model integrates water protection, land and water use, preservation of ecosystem sustainability, preservation of functional unity of catchment and river flow and socio-economic activity in the catchment. The model has been developed on the basis of combining existing models, including balancing, deterministic (2D) and statis...

2016
Thomas Cornelissen Bernd Diekkrüger Heye R. Bogena Xuan Yu

Parameterization of physically based and distributed hydrological models for mesoscale catchments remains challenging because the commonly available data base is insufficient for calibration. In this paper, we parameterize a mesoscale catchment for the distributed model HydroGeoSphere by transferring evapotranspiration parameters calibrated at a highly-equipped headwater catchment in addition t...

2002
Tony H.F. Wong Tim D. Fletcher Hugh P. Duncan John R. Coleman Graham A. Jenkins

Catchment urbanisation leads to increased hydraulic and pollutant loadings into receiving waterbodies. Issues concerning pollution that endangers the sustainable utilisation of water resources have focused government authorities towards integrated catchment management, where both causes and effects of pollution are addressed. Recent research has provided a platform for improving urban stormwate...

Journal: :اکو هیدرولوژی 0
سارا آزادی کارشناس ارشد آبخیزداری، دانشکدة منابع طبیعی، دانشگاه صنعتی اصفهان سعید سلطانی دانشیار دانشکدة منابع طبیعی، دانشگاه صنعتی اصفهان

according to the importance of obtaining accurate informations on drought conditions and it risk management for water right of major wetlands in iran, in this study climatic coefficients of palmer index for 17 watersheds in country was calibrated and zonation and their range in basins containing international wetlands were investigated. results showed that in wet conditions, in basins such as c...

2005
THOMAS MEIXNER MARK FENN

In this study biogeochemical export in a set of catchments that vary from 6ha to almost 1500ha is investigated. Studying catchments across this large range of scales enables us to investigate the scale dependence and fundamental processes controlling catchment biogeochemical export that would not have been possible with a more limited data set. The Devil Canyon catchment, in the San Bernardino ...

Journal: :iran agricultural research 2008
h. abbaslou a. abtahi

pedogenesis and clay mineralogy of soils and rock samples were studied in a transect of calcareous, gypsiferous, saline soils and sediments of bakhtegan lake bank in southern iran. the main objectives of study were to determine the occurrence of clay minerals and factors controlling their distribution pattern and relative abundance in soils and parent materials. the soil parent material is high...

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