1 An aquifer is a water - bearing rock stratum such as sandstone and chalk.

2 Pumping water from an aquifer lowers the water table.

3 The aquifer has no shield of impermeable clay and the proposed artificial barriers would not guarantee success.

4 If we drill a borehole into the aquifer the groundwater will be under sufficient pressure to overflow from the borehole.

5 Groundwater in a confined aquifer is compressed elastically, rather like air in a tyre.

6 The aquifer is unconfined locally and may be recharged.

7 Recharge areas are necessary for a healthy aquifer.

8 Such material can confine water in an artesian aquifer.

9 A confined aquifer is also known as a pressure aquifer.

10 Well - Aquifer Systems under Favorable Conditions Can Act as very Sensitive Strain Meters.

11 To the aquifer prone to heat transfixion, smaller temperature difference of pumping and recharging and larger pumping flow should be adopted under the permission conditions.

12 Australias great aquifer covers the eastern half of the country, for instance.

13 The groundwater recharge, specific yield of aquifer, groundwater storage and the yield can also be gotten by the said method.

14 For utilizing the groundwater resources in aquifer of fine silt and decreasing producing cost of water, the bridging filter shall be positively popularized.

15 If we pumped long enough we could eventually bring the potentiometric surface below the top of the aquifer.

16 When water flows out from an artesian well in a confined aquifer, none of the pore space drains completely.

17 And by sinking a well or borehole into an aquifer, groundwater can be pumped to the surface.

18 This process involves the addition of microorganisms,[] nutrients and an electron acceptor into the saturation zone of a contaminated aquifer.

19 Above this floor, rain soaks down to recharge an aquifer.

20 It passes through the confining layer somewhere above the aquifer.

21 This deficit must be satisfied before any water can infiltrate downwards through the soil to replenish the aquifer.

22 When groundwater flows naturally or is pumped from an unconfined aquifer, it drains from the pores.

23 But the borehole must go deep enough to reach the aquifer, even if this means drilling far below the potentiometric surface.

24 Surface spreading systems are applicable in many areas. Deep aquifer is undertaken in the urban area.

25 According to the identified groundwater table the inverse analytic method is applied to inversely deduce the hydraulic inductivity of the aquifer.

26 This article introduces a method for determining hydrogeological parameters such as the field capacity in zone of aeration and the specific yield in aquifer where water content is varied.

27 It is easy to obtain parameters of permeability and original pressure of deep brine aquifer by using the pressure recovery curve of a production well after it is shut up.

28 The phase lag produced by the response of the well water level to variation of air pressure results from permeation of water between the well and aquifer.

29 For example, the bore hole hosting the strain meter at the Tsang-Wen Reservoir is in such a fractured aquifer.

30 There is no experience on the gas - drive mechanism study of aquifer underground gas storages in China.

1 An aquifer is a water - bearing rock stratum such as sandstone and chalk.

31 The results shows that: 1, The spatial change of the transmissibility coefficient of aquifer complies with the normal probability distribution.

32 But Eogene aquifer cannot be taken as the main objective formation.

33 Above the reservoir of interest is high and cliffy formation which has variable lithofacies and thickness, and has developed salt bed, gypsum, mud and hi pressure aquifer.

34 Calculated aquifer can be generalized to be heterogeneous and isotropy aquifer.

35 Recognition of aquifer with both unite pump experiment data and long-time observation hole data in numerical model parametric recognition process gets a good effect.

36 Sometime the term artesian is used to denote a confined aquifer.

37 On the basis of the test the damping factor and angular frequency of natural oscillation cf the well aquifer have been calculated.

38 Particularly,() the solution for impermeable silt-layer can be used to describe the tidal fluctuation in a confined aquifer under a tidal river separated by an impermeable layer.

39 Fryeburg, in south - west Maine near the New Hampshire border, sits on an enormous aquifer.

40 The experimental results show that denitrification effects in middle aquifer with coarse sand is better than in Lower aquifer with fine sand.

41 Colored deep red by algae adapted to survive in its hypersaline waters, this lake in the Ubari Sand Sea is fed by springs from an underground aquifer created by ancient rains.

42 One of the two main types of aquifer is the unconfined aquifer.

43 The impacts of the offshore extending length and the silt-layer's dimensionless leakance on the tide-induced groundwater head fluctuation in the aquifer were analyzed and discussed.

44 Israeli projects to abstract water from the shared Mountain Aquifer are notpresented to the JWC.

45 Oakland fears that rising seas will salinate its underground aquifer.

46 In the early twentieth century, however, it was discovered that much of the High Plains was underlain by a huge aquifer (a rock layer containing large quantities of groundwater).

47 Owing to groundwater overexploitation in the plain area of Xingtai of Heilonggang, a series of geological environment problems such as land subsidence, aquifer unwatering is occurred.

48 Because of the different geographical position, geological structure, depth and aquifer rock, coseismic groundwater level changes of the same earthquake in the two wells are different.

48

49 Once the aquifer disconnect from the stream, the inverted saturated zone of the rectangular streambed show a hemicycle, and that of rectangular streambed show a vertical rhombus.

50 It describes unsteady flow toward a discharging well in an extensive aquifer.

51 Recharge to the aquifer happens through cracks in the clay lining of the playa floor and at the edges of playa basin.

52 The paper analyses groundwater regime in the confined aquifer of the area of Puxi in Shanghai.

53 The aquifer which had once fed the wells was pronounced dry.

54 As Bromberg and I followed the Auja spring east, we passed a complexof pumps and pipes behind a barbed-wire fence—a Mekorot well, drilled2, 000 feet deep to tap the aquifer.

55 It is required in the design that aquifer medium and flow field were essentially not disturbed when frame was inserted into test zone.

56 The carbonate of host bed aquifer has great influence on sandstone type uranium deposit in - situ leaching.

57 Stability of a shaft in thick and deep surface soil is studied when a bottom aquifer of Quaternary System is feeding water to Haizi Mine in Huaibei.

58 But the rights to divert water—from a river or lake or underground aquifer—are indeed sellable commodities; so too are the plants and pipes that process that water and deliver it to our taps.

59 This relationship is matched with the actual reservoir pressure history, to obtain the elastic energy factor of the reservoir and the aquifer and the water influx factor, simultaneously.

60 So the research on the water bursting mechanism and forecasting technique become the key technique of coal mining on top of the high pressure aquifer .

61 Mud composed of water with clay, zeolite, iron, calcium sulphate, etc is returned and infused to aquifer by the pressure to effectively control the nitrobenzene pervasion in groundwater.

62 The simulation results indicate that the unconsolidated confined aquifer plays a crucial role in the process of load transfer because of its fluidness and replenishment in time.