نتایج جستجو برای: groundwater quality index

تعداد نتایج: 1132664  

2011
Guey-Shin Shyu Bai-You Cheng Chi-Ting Chiang Pei-Hsuan Yao Tsun-Kuo Chang

In Taiwan many factors, whether geological parent materials, human activities, and climate change, can affect the groundwater quality and its stability. This work combines factor analysis and kriging with information entropy theory to interpret the stability of groundwater quality variation in Taiwan between 2005 and 2007. Groundwater quality demonstrated apparent differences between the northe...

Journal: :J. Geographic Information System 2010
Natarajan Venkat Kumar Samson Mathew Ganapathiram Swaminathan

The present study aims to develop a new hybrid Fuzzy Simulink model to assess the groundwater quality levels in Tiruchirappalli city, South India. Water quality management is an important issue in the modern times. The data collected for Tiruchirappalli city have been utilized to develop the approach. This is illustrated with seventy nine groundwater samples collected from Tiruchirappalli city ...

Journal: :مدیریت آب و آبیاری 0
حسین انصاری دانشیار گروه مهندسی آب، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد - ایران محمد نادریان فر دانشجوی دکتری تخصصی گروه مهندسی آب، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد - ایران

in recent decades, neyshabour basin as a semi-arid climate has faced with dramatic increasing of groundwater withdrawal. so, water demand management is important in this basin. in this study, the effects of evapotranspiration and rainfall on groundwater fluctuations have been considered with 22 rain gage and evaporation gage station data during 1973-2006. the average amount of rainfall and evap...

Journal: :Environmental science and pollution research international 2013
Ying Ouyang Jia-En Zhang Prem Parajuli

Characterization of groundwater quality allows the evaluation of groundwater pollution and provides information for better management of groundwater resources. This study characterized the shallow groundwater quality and its spatial and seasonal variations in the Lower St. Johns River Basin, Florida, USA, under agricultural, forest, wastewater, and residential land uses using field measurements...

Introduction: Being located in an arid and semi-arid region, Iran has always faced with limited water resources. As groundwater extraction has now exceeded the permitted limits all over Iran and the country faces considerable constraints in developing groundwater resources, severe water crisis looms large in the horizon. In this regard, a quick solution should be considered to supply water from...

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