【2】Groundwater is stored in a variety of rock types. A groundwater reservoir from which water can be extracted is called an aquifer. We can effectively think of an aquifer as a deposit of water. Extraction of water depends on two properties of the aquifer: porosity and permeability. Betwe...
Subsurface hydrological processes and groundwater residence time in a coastal alluvium aquifer: Evidence from environmental tracers (δ18O, δ2H, CFCs, 3H) combined with hydrochemistry As an important part of the water cycle, the hydrologic process and chemical compositions of groundwater have changed...
8.Accordingtoparagraph3,whencanigneousrockserveasanaquifer? A.Whenithasmanyconnectedfractures. B.Whenitliesnexttometamorphicrock. C.Whenitliesrelativelynearthesurface. D.Whenitiscrystalline. 9.Thewordcoatinginthepassage(paragraph4)isclosestinmeaningto A.stream. B.barrier. C.amount. D.layer. 10....
We applied this technique to explore the potential of GPR for monitoring the pumping-induced groundwater level change, then estimating the hydraulic properties of an aquifer in Ulaanbaatar, the capital of Mongolia. A field survey was conducted along three different directions when a production well ...
The Nile Delta aquifer, Egypt, which is replenished directly by the Nile water, is considered another renewable resource. However, this aquifer system is in direct contact with the Mediterranean Sea from the north and the Suez Canal from the east. Groundwater resources in Nile Delta are an ...
in hydrological and biological drivers. For instance, snow melt during spring typically increases groundwater recharge compared to the frozen period31,32,33, consistent with seasonal water table level variations in surficial aquifer piezometers in the Arctic34,35. The lower magnitude of groundwater ...
Groundwater governance can be defined as the system of formal and informal rules, rule-making systems and actor networks at all levels of society that are set up to steer societies towards the control, protection and socially acceptable utilization of groundwater resources and aquifer systems. Groun...
and at the intersection of surface water bodies, but will vary locally depending on the hydrologic regime, aquifer configuration and streambed hydraulic conductivity. However, the widespread occurrence of groundwater storage losses in regions with identified GDEs underscores the need to proactively protect...
and an iterative model calibration method to reasonably consider hydraulically relevant karst conduits in the model. The paper describes the principal approach and its application to a Triassic limestone aquifer in southwestern Germany. The discussion sets a focus on the value of combining, integrating,...
In this study, we use a 1D-CNN approach14 to build 118 site-specific models, well distributed over Germany in the respective uppermost unconfined aquifer, which are able to predict weekly groundwater levels with high accuracy using only precipitation and temperature as inputs in the past. We ...