groundwater

In comparison with tritium, CFC seems to be a better tool which possesses more advantages for young groundwater dating at present.

He said that the sewage from so much development would poison the local groundwater - and Chelmsford's wells, the town's drinking water.

Groundwater is the word used to describe water that saturates the ground, filling all the available spaces.

More than a century of groundwater over-exploitation in Vietnam has drawn the water table down and, with it, arsenic.

He added that he has not seen clear evidence of how much glaciers contribute to river flow in comparison with groundwater.

Water quality is one of the important factors to be considered for confirming the pumping well place in the groundwater source site.

It has been used to evaluate the groundwater vulnerability in Sanjiang Plain. The satisfying result is acquired.

It had a good application prospects for PRB with the peat as the reactive media in the remedy area of petroleum contaminated groundwater.

Communities of microorganisms have been found hunkered down in groundwater as far as 5 km below the surface of the land.

Spain, which after 20 years has registered less than a quarter of its groundwater structures, shows that this can take a long time.

Zero-valent iron is cheap and easy to get, and can effectively remove heavy metals including uranium in groundwater.

In the United States, China and many other places, farmers probably have to pay something for the right to draw groundwater.

Whether the parameter is confirmed reasonably, it directly influences the rationality of evaluation result of groundwater resources.

But he is calling for a review of Maine's groundwater laws, which in effect allow landowners at the moment to pump as much as they wish.

Waste drilling will not pollute the surface water and groundwater resources.

The method of the invention can be effectively used for bioremediation of the nitrate pollution in the groundwater.

Elsewhere, irrigation schemes have already caused salty groundwater to rise towards the surface and contaminate soils.

The depth of groundwater is referred to the existing ground elevation at the top of borehole.

Volcanic gases and magma heat the groundwater, turning it in a hot acid that dissolves rock into a slurry of mud and clay.

From groundwater hydrological geological unit, it had a unique formation conditions of the development.

Therefore, the land subsidence can be alleviated by limiting the withdrawal volume even if groundwater withdrawal is not stopped.

For that project, cement and chemical pre-grouting was originally used to reduce groundwater inflows.

It was the result of villagers pumping up groundwater from ever deeper aquifers.

Groundwater used for freshwater drinking supplies can be easily over-exploited.

They're afraid those hazardous substances could wind up in groundwater or the Missouri River, and contaminate area drinking water supplies.

Much of the drained groundwater ends up in the oceans where it is contributing to sea level rise.

The water resources referred to in this Law include surface water and groundwater.

FDM(Finite Difference Method) is one of the important numeric calculation methods used in Groundwater Gynamics.

The relationship between vegetation growth and groundwater in arid areas is one of the most actively researched topics in ecohydrology.

Agricultural irrigation, industry, scenic water and groundwater recharge are the main approaches of wastewater reuse.

It is known, however, that the distribution of groundwater is uneven, and that much of it lies at great depths.

environmental groups say coal ash is full of toxic metals and tends to leach into groundwater.

Groundwater is one of the main factors resulting in instability and sliding failure of the soil slope.

The city is already sinking due to its soft underground, heavy urbanization, and excessive pumping of groundwater.

Siemens' filters, and those of its competitors, are used in treating semiconductor wastewater and groundwater remediation systems.

The fuzzy multivariate statistical method has shown to be a practical, simple and useful tool to assess and prevent groundwater pollution.

Groundwater contamination----pollution that leaches into a water-saturated region.

This method can be also used for the exploration of coal, oil, groundwater and other resources.

Since then, the degree to which pumping is outpacing groundwater recharge has also more than doubled, according to the findings.

RAW cleans up the affect of contamination on soils, industrial waste, sludge, groundwater, surface water, waste water, and sewage.

For the natural condition, the middle and deep groundwater is mainly recharged by the side run-off, then is supplied by shallow groundwater.

Redox conditions (related to dissolved oxygen) and pH seem to affect which trace elements persist in groundwater.

Article 2. The " water resources " referred to in this Law includes surface water and groundwater.

But it is also the subject of a heated environmental debate, with critics alleging that the production process can pollute groundwater.

Rainwater enters the groundwater system and increases the acidity of our drinking water, which can be a health hazard for us all.

Officials referred to rivers, not groundwater, as feeding the plants tested this week.

Due to the characteristic of technical impracticability, it is hard to calculate the cost of remedying contaminated soil and groundwater.

To cope with its chronic water shortages, India employs electric groundwater pumps, diesel-powered water tankers and coal-fed power plants.

Long-term exploitation of thermal groundwater in deep-seated aquifers has led to a continual falling in water levels at geothermal wells.

Groundwater exploitation is one of the main reasons for ground subsidence.

One of these rugged devices can turn 1, 000 litres a day of contaminated groundwater, polluted river water or seawater into drinking water.

A desirable groundwater table can be obtained via a solenoid valve and a feed-back pore pressure transducer.

Groundwater is deteriorating in many parts of the country due to excessive exploitation and pollution.

To control both the upland water and groundwater is a very effective measure to take for improving the stability of the junkyard.

The groundwater models are distributively invocated with this editor. The result shows that this editor is effective and easily operable.

Agricultural irrigation is largely responsible, accounting for up to 80 percent of groundwater use worldwide.

With the rise of groundwater lever, the coefficient slope stability decreases with a quadratic function approximately.

However, with 60 golf courses found across the city, 40 million tons of groundwater are pumped up and used to irrigate the greens.

Finally, the developing direction of groundwater treatment technologies was prospected.

Surface water resources is relatively less in northern part of China, thus groundwater protection is of great importance.

Groundwater is one of the important factors to influence the safety of tunnel engineering.

Be capable of Links to: Urban Groundwater Database, USGS Water Resources Information & WWW Virtual Library - Environment.

Furthermore, the tidal effects on the freeboard of the groundwater table along the shore also relate to the thickness of the aquifers.

Soluble contaminant is one of important factors affecting pollution of groundwater.

Strict management can assure fundamentally urban groundwater resources to be exploitated and used in reason.

The groundwater is of meteoric origin resulted from the fact that the groundwater in CGB is mainly distributed along LMWL.

Other island nations like the Maldives and Kiribati will see their groundwater spoil as sea levels rise.

It is of great significance to quantify water exchange through interface between groundwater, soil moisture or atmospheric water.

Dissolution mostly occurred in groundwater recharged area along the river course, evaporation and deposition in running-discharge area.

Water chemistry and isotopes of groundwater and surface water samples, and those of soil moisture profiles in particular, have been studied.

In the 21st Century, people may be in a situation of dehydration due to long term uncontrolled exploitation of groundwater.

Land use changes can influence hydrological processes including infiltration, groundwater recharge, base flow and runoff in a watershed.

Secondly, groundwater quality set pair analysis and evaluation model was built and applied to the groundwater quality evaluation in Taiyuan.

The limits of the altered sands are considered to be the most forward penetration of the oxidizing groundwater.

Groundwater types and development patterns are summarized over the areas covered by loess in the east part of the Ordos Basin.

Does not need cooling at the season, hot water unit circle groundwater, there is no minimum evaporator water flow problem.

The groundwater resource potential is an important basis for carrying out planning of groundwater resource development and utilization.

Fault structure can be both recharge area and discharge area of groundwater for the formation of in-situ sandstone-type uranium deposit.

In this paper, a nonlinear coupled system with mixed boundary conditions is applied to the description of groundwater quality contamination.

This paper reviewed the principles of electrokinetics and its application in remediation of contaminated soils and groundwater.

Groundwater levels have steadily dropped in recent years as farmers dig ever more wells to pump up the precious liquid to irrigate crops.

Groundwater is an important part of water resources in northwest arid area, it is one of keys to oasis land use.

Drinking water source protection zones can be divided into surface water source protection areas and groundwater protection areas.

Construction of thousands of high-rise buildings, combined with the pumping of groundwater, is making the soil subside.

Most of batteries containing mercury, Infiltration into the soil or groundwater, pollution of the environment against humanity.

Discussion to the paper "control the land subsidence by adjusting the exploitation stratum of groundwater"

Plentiful rain during the winter replenished the groundwater levels and the end of the cold damp winter was marked by very early bud burst.

Groundwater is important sources in water shortage regions, and its development and management has brought worldwide attention.

In this paper, the following questions are discussed: First, the paper sets up the Environment Performance Evaluation index of groundwater.

They say it could also be used to recover nitrogen from groundwater beneath fertilized farm fields.

In - situ stress and groundwater have important influences upon the design and construction of the lining for deep and long tunnels.

reduce groundwater, surface water and air pollution, improve product quality, meet the pollution-free and healthy food requirements.

To prevent further environmental damage, both ground and groundwater in the vicinity of these landfills often require treatment.

The herbicide atrazine is among the pesticides most frequently detected in groundwater.

The method of spontaneous electric field can be used to detect seepage channels, fracture zone and groundwater flow in dams.

This analysis also provides a sound basis for suggesting groundwater recharging as an effective means to control the subsidence.

In Idaho people drawing groundwater are being ordered to work with other holders of stream water rights as the streams begin to dwindle.

Groundwater level fluctuates in response to rainfall demonstrating a vertical rainfall recharge through the superficial soil.

During the formation of oil and gas accumulation, as the displacing force and carrier, the groundwater plays an important role.

So the immediate threats from North Korea's new capability come from radioactive leaks into the atmosphere and North Korea's groundwater.

Results of this study: groundwater, structures, collapse of the Quaternary are factors.

This article aims to analyze various processing methods for groundwater excavation of the foundation ditch in earthwork construction.

Deep burial, as well as the formation of groundwater conditions, it became the most stable river basic water supply sources.

Farmers in the Indian state of Punjab, traditionally wheat and rice growers, have long relied on groundwater to irrigate their crops.

In Xuzhou Coal Mining Area the groundwater hazard is serious due to the larger mining depth and complicated hydrogeological conditions.

finally, the modulating countermeasures for groundwater sustainable development were discussed.

Instead, the mounting cost of pumping groundwater from deeper and deeper levels may eventually produce the same result.

during the weathering of granite , groundwater from the granitoid weathering crust have special chemical compositions.

Many chemical contaminants, including chlorinated solvents, BTXE, nitrate, toxic metal in groundwater systems can be biodegraded .

Jewelry, funerary masks, and pottery were also found, though the sand-covered tombs have been damaged by humidity and seeping groundwater.

This web site provides information about scientific projects, groundwater research, fund, conferences, publications, etc.

In many places, groundwater tables are dropping two meters a year or more because of over pumping.

Special law and regulation must be enacted to adapt the characteristics of transboundary groundwater.

Date Envelopment Analysis assess the environmental performance of the groundwater from the technical efficiency and the scale efficiency.

Here, the convection is of vital importance for the formation of groundwater pollution system.

Both current visualization software and computer language can realize the volume visualization of groundwater exploration and evaluation.

At present, the majority of urban groundwater by a certain degree of spot-and surface-like pollution, and the trend year-on-year increase.

The results indicated that the shallow groundwater and surface water were heavily contaminated in the intensive livestock cultivation area.

Indirect sources include contaminants that enter the water supply from soils or groundwater systems and from the atmosphere via rainwater.

Any unit which directly draws groundwater in an urban area shall be charged a water resources fee.

Third, water price must be reformed to promote the rational exploitation and utilization of groundwater.

an effective way is to combine the water curtain with the recharge well to control the decrease of the groundwater level.

The Fukushima Daiichi plants are built on the shore. Groundwater beneath appears to be linked to tidal flows.

Winkel says that these maps provide a "helpful tool" to immediately pinpoint areas that need to be prioritised for groundwater tests.

Groundwater level is a dominant environmental factor affecting the physiological characteristics of plants in Tarim River Watershed.

In several regions of Quebec and Canada and in other parts of the world, the groundwater contains naturally high levels of manganese.

Salt deposits could have come from groundwater, not standing water .

At the beginning of mining, surface subsidence is mainly caused by groundwater drainage.

The Tunnels are to build the structures under surface of the earth, which are always surrounded in a variety of groundwater.

The obtained results may baffle the implementation of the EU Water Framework Directive in groundwater quality management field.

Vision: Protection and enhancement of valuable surface and groundwater supplies for the benefit of present and future generations.

As the three reservoirs began cutting irrigation supplies in 2006, farmers had to turn to far more costly groundwater.

Regarding groundwater as the main clue, the study of assessment method of supergene eco-environment in watersheds is developing.

The results of this work can provide evidence for groundwater development and water resources management in this area.

From the environmental pollution control technology can be seen that the soil and groundwater pollution is very difficult to deal with.

The purpose of this research is the performance evaluation of groundwater recharge of storage pond in Taoyuan area.

Groundwater depth is a dominant environmental factor affecting the physiological characteristics of plants in the the Tarim River Watershed.

And the pollution degree of groundwater is affected by the conditions, scale, frequency and development stages of karst collapse.

Nitrogen fertilizer application inducing non-point source pollution is the main reason for groundwater contamination in the area.

In areas which are prone to salinization-alkalization and water-logging, measures shall be taken to control and lower the groundwater level.

Strengthen the management of groundwater resources, where strict limits, damaging exploitation of groundwater.

The groundwater level was an important reason for soil salinization its contribution was of 11. 1%.

The present geothermal field is controlled by thickness of lithosphere, structural features as well as groundwater activity.

Chartres mentioned India, where his institute is encouraging farmers to use surface water irrigation systems to recharge groundwater.

Any concentration that exceeds the Dutch Target Value (DTV) is an indication that soil or groundwater has been impacted by human activities.

Many new ways and techniques for groundwater resources evaluation and protection have been summarized.

Uranium in groundwater occurred over a wide range of pH and redox conditions because of its association with other compounds.

In Suzhou, Wuxi and Changzhou area, the land subsidence caused by the excess extraction of deep groundwater has become a serious hazard.

the main groundwater of north anchoring area is perched water with relatively less volume and the underlying sandstone is impermeable layer.

The outcomes show that the groundwater environment of Zhengzhou and Puyang are in unhealthy status and Xinxiang and Kaifeng in sub health.

Also discussed are the water-rock interaction equilibrium and mixing of shallow groundwater in the volcanic region.

A hydrogeological conceptual model is the basis of groundwater numerical modeling and groundwater resource assessments.

THE GIST Groundwater is being pumped away at rates that have more than doubled since the 1960s.

At this rate, Tucson's groundwater supply, which now provides the majority of the city's water, has a very limited life span.

The lay-like karst aquifer formed by some special strata and fossil karst are very important in the groundwater exploitation in this area.

On earth, majority of freshwater resources for poles and alpine glaciers, most of the rest goes deep groundwater.

The main characteristics of those groundwater types are described.

If the landfill leachate is discharged into the environment, the soil and groundwater environment will be polluted severely.

Research for groundwater types variety will be very important, which can support the plan of making use of groundwater in city.

Underneath a neighborhood in the southeastern part of town lies a groundwater plume contaminated with chlorinated solvents.

Pond formation history, groundwater flow-through ponds, phosphorous contamination.

Rainwater will no longer be discharged from municipal pipes but will be retained in local ponds and supplement groundwater.

The paper summarizes the application of artificial neural network in groundwater evaluation, and discusses the problems that still exist.

The distributions of the amount of salt in groundwater at different seasons showed a low temporal variability.

groundwater source heat pump air-conditioning system is in the extraction of groundwater from wells.

Concerns include the degradation of surface and groundwater owing to poultry waste nutrients and pathogenic microorganisms.

Study showed natural resources of groundwater were reducing in recent years influenced by climates and human engineering activities.

Centrifuge model tests were conducted to investigate the ground settlement due to groundwater pumping.

Thus, a modified BP neural network model was established for groundwater environmental vulnerability evaluation.

It is suggested that the deterioration of the shallow groundwater is primarily due to human activity.

The results of groundwater isotope analysis show that the groundwater in the Yinchuan Plain has different recharge patterns.

A mathematical model for groundwater pollution in a leaky aquifer system, which involves the adsorption of semipervious layer, is presented.

Construction of MRLs in the coastal area of Taoyuan County is feasible by fully utilizing surface water and groundwater.

Local stability analysis of seepage should be focused on groundwater seepage gradient in penetration point.

Its high ecological value, including its advantages can improve urban heat, light environment, conserve groundwater.

Already by the 1960s, people were pumping groundwater faster than it could be replenished by water soaking back into the ground.

The inclusion of unsaturated flow in groundwater modelling is important for obtaining physically realistic analysis results.

With this support, villagers dug long trenches to channel rain into shallow reservoirs that replenish groundwater supply.

This web site provides information about groundwater basics, news, calendar, groundwater protection, etc.

Keriya oasis is located in the Northwest extreme arid region of China, where there is less precipitation and a deficiency of groundwater.

Certain plants emit chemicals to the air. The chemicals are then brought down by the rain and enter our groundwater.

Identification of aquifer parameters plays a primary and pivotal role in ensuring proper management of groundwater resources.

For different stratum , the type of groundwater, replenishment, runoff and discharging condition is different.

Water is harmful to roadbed, road surface and tunnel. Construction of highway may influence the groundwater environment along the highway.

The research themes are: Sustainability of groundwater supply, Resource recovery, Groundwater and the Environment.

However, the quality of groundwater is under great pressure of pollution from agricultural, industrial and domestic sources.

Differentiate the groundwater inside the area by hydraulic feature for loess layer dive, shallow ministry bear pressure. . .

The test results provide valuable information for the design of air sparging system for groundwater remediation.

The under stratum, calcareous sandrock and conglomerate rock, generate dissolution of groundwater.

Microbial degradation of benzene and toluene in groundwater under enhanced denitrifying condition.

And unlike meat from those filthy places, it will not pollute rivers and streams, deplete groundwater or cause deforestation.

The applicability of nano-molecular sieve as adsorbent in removal of excess fluoride from low concentration groundwater was studied.

The residential quarter adopts groundwater-source heat pump as central air conditioning system for cooling and heating of buildings.

Activists have attacked both Coca-Cola and Pepsi, for instance, for allegedly depleting groundwater in India to make bottled drinks.

Soil organic nitrogen was not a major source of nitrate contamination of groundwater beneath Shijiazhuang City.

It's often formed by a flow of groundwater that passes upward through sand.

Perturbation of ground surface temperature reconstructions by groundwater flow?

Qian'an is a city with water shortage, limited potential for surface water development, and groundwater in overexploitation.

The optimal results of the groundwater management in the city were determined by linear programming.

we propose that the control of excessive exploitation of groundwater is the basic approach for reducing the disaster.

The confined water is subject to seasonal pumping and its water level variation pattern is influenced by groundwater extraction.

At last, the suggestion for groundwater exploitation and utilization have been put forward.

Surface-water of Jing river and groundwater are close relation, but surface-water of Malian river are collected by discharged groundwater.

Common methods for investigating groundwater infiltration of drainage systems are analyzed.

Groundwater----Subsurface water that occurs beneath a water table in soils, rocks, or in fully saturated geological formation.

In 1991 the BGS carried out a pilot research study into the chemistry of groundwater in central and northeast Bangladesh.

The dynamic transformation of groundwater was influenced distinctly by rainfall, with seasonal nature.

She speculates, however, that they used relatively clean groundwater to meet Olympic demand.

The main reason for change tendency of groundwater quality is the human activities in recent years.

San Antonio has attempted to secure water from a number of Texas groundwater conservation districts.

This paper states some treatment methods and relevant precautions of groundwater in earthwork construction.

the authors discuss the key factors that affect seawater intrusion degree in Yantai City are closely related with groundwater regime.

The heavy over-exploitation of the groundwater resources in causing huge environmental damae.

An oxbow lake may survive as a water body for some time, especially if groundwater seeps into it.

Another good tip to limit groundwater intrusion is to sink a "cutoff wall" several feet into the ground.

Exposure to perchloroethylene can occur in the workplace or in the environment following releases to air, water, land, or groundwater.

Human activities like mining, waste disposal, and construction also can contribute to trace elements in groundwater.

The precipitation, surface water resources, groundwater resources, and total volume of water resources were evaluated for Luoyang City.

The application example shows that the presented models in this paper are valid for predicting the groundwater level.

Pipe drainage system has big control of excluding agricultural groundwater and soil moisture and raise the utilization of land area.

The other influence factors include oxygen demand, chlorine ion and sulfate with the groundwater being weak acidity.

The paper finally points out that protection of groundwater reservoir environment needs special attention.

On Eco-environment Change Due to Groundwater Overdraft in Yuncheng City and Countermeasure.

Generally, groundwater recharge rate is not constant, it is affected by many factors, mainly natural and human factors.

It enters drinking water supplies through natural deposits released into the groundwater.

Treatment method and existing problems of rivers in groundwater numerical simulation were discussed.

The largest freeboard of the groundwater table in unconfined aquifers induced by tides may reach about 10% of the thickness of the aquifers.

Drainage of groundwater shall be discharged into stormwater drains after removal of silt.

Exploiting groundwater is a main reason to the ground settlement and uneven settlement can do great harm to the high- speed railway bridge.

The microscopic control refers to the effects of groundwater on migration and accumulation of oil and gas in traps or reservoirs.

Its 22 million people are running out of groundwater, and thus its prognosis is not good.

The dynamic regime of the mud springs reflects different circulation depths of groundwater.

But waste in landfill emits greenhouse gases as it rots, and can poison groundwater.

Radon, derived from naturally occurring uranium in aquifers, also occurs frequently at high levels in groundwater.

phenol and nitre content in groundwater of piedmont clinoplain were raising yearly , but totally keep in the range of first-level.

Exploration result demonstrated that owing to the existing of confining beds, salty and fresh groundwater.

Results Ferromanganese was the main heavy metal pollutant in groundwater of Kunming City from 1982 to 2008.

The remaining 10% or so comes from groundwater, and a minuscule amount from recycling.

The groundwater temperature gradually decreases with the increase of elevations.

The pressurized water forms a dam between the ocean and the groundwater basin, keeping saltwater at bay.

Pesticide residues, chlorinated solvents, MTBE petrol additives and oil and petrol may pose a threat to clean groundwater.

The paper provides a basis theoretical support for further studying of relations between polluted river and the quality of groundwater.

A large amount of clay of slip zones data statistical analysis has pointed out groundwater function in the destroy process of the slope.

However, groundwater samples outside Camp Carroll have also shown no dangerous levels of toxic contamination.

Through that summer and fall, the team searched for toxic or radioactive pollution in river sediments, groundwater, soil and air.

groundwater discharge into lake, dissolved iron and manganese contamination.

An identical soil stratum may exhibit elasticity, elasto-plasticity or visco-elastoplasticity under different modes of groundwater changing.

Frequency analytic approach is suitable to groundwater resource evaluation with long series spring flow.

There is the seasonal characters among groundwater level changes which is close relation between the local area and its precipitation.

to simulate and predict the variations of soil water content and groundwater recharge intensity before and after lake lining.