نتایج جستجو برای: groundwater fluctuation

تعداد نتایج: 54428  

Journal: :Environmental pollution 2007
A Visser H P Broers B van der Grift M F P Bierkens

Recent EU legislation is directed to reverse the upward trends in the concentrations of agricultural pollutants in groundwater. However, uncertainty of the groundwater travel time towards the screens of the groundwater quality monitoring networks complicates the demonstration of trend reversal. We investigated whether trend reversal can be demonstrated by relating concentrations of pollutants i...

2016
Mahfuzur R Khan Mohammad Koneshloo Peter S K Knappett Kazi M Ahmed Benjamin C Bostick Brian J Mailloux Rajib H Mozumder Anwar Zahid Charles F Harvey Alexander van Geen Holly A Michael

Many of the world's megacities depend on groundwater from geologically complex aquifers that are over-exploited and threatened by contamination. Here, using the example of Dhaka, Bangladesh, we illustrate how interactions between aquifer heterogeneity and groundwater exploitation jeopardize groundwater resources regionally. Groundwater pumping in Dhaka has caused large-scale drawdown that exten...

2011
Ying Ouyang

Pollution of rivers with excess nutrients due to groundwater discharge, storm water runoff, surface loading, and atmospheric deposition is an increasing environmental concern worldwide. While the storm water runoff and surface loading of nutrients into many rivers have been explored in great detailed, the groundwater discharge of nutrients into the rivers has not yet been thoroughly quantified....

2006
E. A. Mohamed

Compartmentalisation, the subdivision of an aquifer into discrete and relatively isolated units, may be of critical importance for the protection of groundwater although it has been largely ignored in the groundwater literature. The Lower Triassic Sherwood Sandstone, in north west of England, UK, may be a good example of an aquifer that has been compartmentalised by numerous high angle faults w...

2015
Dhafer Alsalah Nada Al-Jassim Kenda Timraz Pei-Ying Hong Paul B. Tchounwou

This study examines the groundwater quality in wells situated near agricultural fields in Saudi Arabia. Fruits (e.g., tomato and green pepper) irrigated with groundwater were also assessed for the occurrence of opportunistic pathogens to determine if food safety was compromised by the groundwater. The amount of total nitrogen in most of the groundwater samples exceeded the 15 mg/L permissible l...

2017
Weiwei Shao Jinjun Zhou Jiahong Liu Haixing Zhang Jianhua Wang Chenyao Xiang Guiyu Yang Yun Tang

The comprehensive treatment project of groundwater over-exploitation in Hebei Province has been implemented for more than a year, and the effect of exploitation restriction is in urgent need of evaluation. This paper deals with Cheng'an County of Hebei Province as the research subject. Based on collected hydro-meteorological, socioeconomic, groundwater, and other related data, together with typ...

2011
Xiao Liang Pieter van Dijk

Since groundwater is diminishing rapidly in rural Beijing, rainwater harvesting for irrigation is being promoted. As the cost of pumping up groundwater is low, farmers have few incentives to use rainwater. To promote the consumption of rainwater, the Beijing Water Authority may in the future raise the cost of using groundwater by introducing a charge. Higher cost of groundwater will increase th...

Journal: :E3S web of conferences 2021

The existence of groundwater in coastal areas really needs attention because its vulnerability to sea water intrusion. Utilization and good management are needed maintain sustainability. purpose this research is determine the aquifer system study area calculate potency. determined by processing geoelectric sounding data using Rockworks 16 software. Groundwater potency calculated a static approa...

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