نتایج جستجو برای: ground water modeling

تعداد نتایج: 1046335  

2013
Zulfiqar Ahmad Arshad Ashraf Gulraiz Akhter Iftikhar Ahmad

Contaminant hydrology is the study of processes that affect both ground and surface water pollution. It draws on the principles of hydrology and chemistry. Contaminant hydrology and water quality research seeks to understand the role of soil properties and hydrologic processes on ground and surface water pollution and develop strategies to mitigate their impacts. Research is done at all scales ...

Journal: :Ground water 2007
Eileen Poeter

Hydrology is modeling, starting from the moment a hydrologist stands on a hill and develops a concept of the system; continuing with application of an analytical model such as Darcy’s law, the Theis equation, or chemical equilibria; and sometimes extending to elaborate numerical models. Darcy created the first quantitative ground water model in 1856, driven by the practical goal of providing a ...

2004
Ralph L. Seiler Kenneth G. Stollenwerk John R. Garbarino

An investigation of a childhood leukemia cluster by US Centers for Disease Control and Prevention revealed that residents of the Carson Desert, Nevada, are exposed to high levels of W and this prompted an investigation of W in aquifers used as drinking water sources. Tungsten concentrations in 100 ground water samples from all aquifers used as drinking water sources in the area ranged from 0.27...

Journal: :journal of research in health sciences 0
mahdi reyahi khoram mino nafea hossein mahjub marzieh hashemy maesumeh parchian

background: the aim of this study was to assess the effects of road deicing salt on the quality of the ground water resources in hamadan province during winter season. methods: water samples were taken monthly from thirty wells located around the hamadan-asadabad highway. the quality of well water was examined by measuring amount of sodium, chloride, total hardness, total dissolved solid, elect...

Journal: :international journal of environmental research 0

wetlands are ecosystems with specific features and functions which have been unfortunatelydamaged by recent pressures and limitations. fast reduction of surface flows, water and wind erosion of soil,changes in the quality of water and soil resources, increasing exploitation of underground water, agriculturaldevelopment, climate change, etc. have had the most effect on these ecosystems. so this ...

Journal: :iranian journal of earth science 0
a. k. m. munirul haque local and revenue audit directorate, audit complex, segun bagicha, dhaka – 1000, bangladesh . m. sarwar jahan institute of environmental science, university of rajshahi , rajshahi – 6205, bangladesh . md. abul kalam azad institute of environmental science, university of rajshahi , rajshahi – 6205, bangladesh .

a case study was carried out to see the impacts of shrimp culture on the surface (pond) and ground water (tube-well) quality in three coastal sub-districts of bagherhat sadar, rampal and morrelganj of bangladesh. the people of rampal (100%), morrelgonj (87.5%) and bagherhat (75.5%) expressed that salinity of both surface and ground water increased after shrimp culture, and water becomes more tu...

Journal: :Computational Water, Energy, and Environmental Engineering 2013

A. K. M. Munirul Haque M. Sarwar Jahan Md. Abul Kalam Azad

A case study was carried out to see the impacts of shrimp culture on the surface (pond) and ground water (tube-well) quality in three coastal sub-districts of Bagherhat Sadar, Rampal and Morrelganj of Bangladesh. The people of Rampal (100%), Morrelgonj (87.5%) and Bagherhat (75.5%) expressed that salinity of both surface and ground water increased after shrimp culture, and water becomes more tu...

Journal: :Journal of environmental quality 2008
Hedeff I Essaid Celia M Zamora Kathleen A McCarthy Jason R Vogel John T Wilson

Estimates of streambed water flux are needed for the interpretation of streambed chemistry and reactions. Continuous temperature and head monitoring in stream reaches within four agricultural watersheds (Leary Weber Ditch, IN; Maple Creek, NE; DR2 Drain, WA; and Merced River, CA) allowed heat to be used as a tracer to study the temporal and spatial variability of fluxes through the streambed. S...

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