نتایج جستجو برای: groundwater mixing
تعداد نتایج: 91596 فیلتر نتایج به سال:
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...
Abstract As an increasingly important aspect of water management, historical dry river-channels, ponds or lakes are operated for the storage reclaimed as a landscape with need reuse water. However, percolated may have adverse effect on groundwater quality. The aims this work to evaluate potential using various constituents characteristics tracers water, clarify hydrochemical process recharge, a...
Episodic recharge as a result of infrequent, high intensity precipitation events comprises the bulk of groundwater recharge in arid environments. Climate change and shifts in precipitation intensity will affect groundwater continuity, thus altering groundwater recharge. This study aims to identify changes in the ratio of groundwater recharge and precipitation, the R:P ratio, in the arid southwe...
Saltwater intrusion into groundwater systems is a problem worldwide and induced mainly by human activities, such as overexploitation climate change. The coastal Los Planes aquifer in the southern part of Baja California Peninsula (Mexico) affected seawater due to more than 40 years overexploitation. A dataset 55 samples was compiled, including 18 from our campaigns between 2014 2016. Several me...
Soil hydrological processes play an important role in land-atmosphere system. In most climate models, these processes are described by soil moisture variations in the first 2 m of soil resulting from precipitation, evaporation, and transpiration. Groundwater effects on soil moisture variations and surface evaporation are either neglected or not explicitly treated. Although groundwater may have ...
Korea has been operating groundwater monitoring systems since 1996 as the Groundwater Act enacted in 1994 enforces nationwide monitoring. Currently, there are six main groundwater monitoring networks operated by different government ministries with different purposes: National Groundwater Monitoring Network (NGMN), Groundwater Quality Monitoring Network (GQMN), Seawater Intrusion Monitoring Net...
The enrichment of heavy metals and mixing with groundwater resources, which makes a serious threat to human health the environment. present study was conducted determine in groundwater, geochemical modelling, estimate probable risks (non-carcinogenic carcinogenic) coal mining region, eastern India. relative abundance mean metal concentration order Fe > Zn Al Ba Mn Sr Ni Ag Cu Pb V Cr Co Cd, are...
The groundwater flow system is typical dissipative structure system, and its evolution can be described with system information entropies. The information entropies of groundwater in Shijiazhuang City had been calculated between 1960 and 2005, and the results show that the entropies have a decreasing trend throughout the research period, and they can be divided into our stages based on the grou...
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