Aquifers are bodies of water located underground. They may be enclosed within surrounding rock, which is called a confined aquifer, or exist within a layer of water-saturated gravel or sand, which is called an unconfined aquifer. Both kinds of aquifers are used for irrigation, industrial applicat...
Unconfined and Deep Confined Aquifer Interactions Evaluated by Isotopic Techniques San Luis Valley, ColoradoO compositions and distributions, suggest that mountain front recharge is the principle recharge mechanism for the upper and lower confined aquifers with travel times in the northern valley of more ...
Mixed confined and unconfined groundwater flow occurs in a bounded initially dry aquifer when the hydraulic head at the side boundary suddenly rises above the elevation of the aquifer's top boundary. The flow problem as modelled by the Boussinesq equation is non-trivial because of the involvement...
1.infiltrate v.渗透 2.aquifer n.含水土层, 蓄水层 3.unconfined aquifer 非承压含水层 无压含水层 4.confined aquifer 自流含水层 承压含水层 5.recharge area 补给区 6.water table n. 地下水面(门窗泻水台)7.vadose zone 渗流区 8.aquitard 半透水层 弱含水层 9.aquiclude n.含水土...
A three dimensional finite element model for fluid flow and transport in confined or unconfined aquifer : F. Jacob, J. M. Crolet, P. Lesaint & J. Mania, in: Water pollution III: modeling, measuring and prediction, ed L.C. Wrobel & P. Latinopoulos, (Computational Mechanics Publications)...
aAs mentioned earlier, beneath the lower Guadal- quivir valley there is an extensive detritic aquifer some 3,000 km ~ in area. Approximately half of this aquifer is unconfined and receives direct recharge from rain- fall. The other half remains confined beneath the muds and clays of the ...
Mixed confined and unconfined groundwater flow occurs in a bounded initially dry aquifer when the hydraulic head at the side boundary suddenly rises above the elevation of the aquifer's top boundary. The flow problem as modelled by the Boussinesq equation is non-trivial because of the involvement...
Li L,Lockingtona DA,Barry DA,et al.Confined-unconfined flow in a horizontal confined aquifer. Journal of Hydronautics . 2003Li L, Lockington DA, Barry DA, Parlange JY, Perrochetet P. Confined-unconfined flow in a horizontal confined aquifer. J Hydrol 2003;271:150-5....
Mixed confined and unconfined groundwater flow occurs in a bounded initially dry aquifer when the hydraulic head at the side boundary suddenly rises above the elevation of the aquifer's top boundary. The flow problem is modelled by the Boussinesq equation and involves two moving boundaries. Here,...
Analysis of steady ground water flow toward wells in a confined-unconfined aquifer. A confined aquifer may become unconfined near the pumping wells when the water level falls below the confining unit in the case where the pumping rate is g... Chen Chong‐Xi,Hu Li‐Tang,Wang Xu‐Sheng - ...