Aquifers are of particular interest in the vicinity rivers, lakes and coastal areas due to their extensive usage. Hydraulic properties such as transmissivity storativity can be deduced from periodical water level fluctuations both open bodies groundwater. Here, we model effect complex wave propagation into adjacent isotropic homogeneous aquifers. Besides confined aquifers, also study leaky aqui...

This study investigated concentrations of various N species in shallow groundwater (<2.2m below ground level) and N losses from dairy production involving grazing over the winter period on a clay loam soil with a high natural attenuation capacity in southern Ireland (52°51'N, 08°21'W) over a 2-year period. A dense network of shallow groundwater piezometers was installed to determine groundwater...

Scientific knowledge of the wet zone - the lagg - that tends to form at the edge of ombrotrophic peatlands is surprisingly limited. In this study, we aim to improve the understanding of the ecohydrological functions of this transition by describing the form and abiotic controls of the laggs and margins of bog peatlands. Data collected in wells and piezometers along 10 transects (within 6 bogs),...

Septic systems can be a potential source of phosphorus (P) in groundwater and contribute to eutrophication in aquatic systems. Our objective was to investigate P transport from two conventional septic systems (drip dispersal and gravel trench) to shallow groundwater. Two new in-situ drainfields (6.1 m long by 0.61 m wide) with a 3.72 m2 infiltrative surface were constructed. The drip dispersal ...

in this paper, the artificial neural network (ann) approach is applied for forecasting groundwater level fluctuation in aghili plain,southwest iran. an optimal design is completed for the two hidden layers with four different algorithms: gradient descent withmomentum (gdm), levenberg marquardt (lm), resilient back propagation (rp), and scaled conjugate gradient (scg). rain,evaporation, relative...

in this paper, the artificial neural network (ann) approach is applied for forecasting groundwater level fluctuation in aghili plain,southwest iran. an optimal design is completed for the two hidden layers with four different algorithms: gradient descent withmomentum (gdm), levenberg marquardt (lm), resilient back propagation (rp), and scaled conjugate gradient (scg). rain,evaporation, relative...

The Okavango Delta in northern Botswana is an endorheic ecosystem formed by 150,000 islands surrounded a flood plain. vegetation of these displays external tree ring enclosing barren interior domain with evaporitic deposits. We sampled the groundwater into piezometers across island at southwest Delta, and drilled sediments. geochemical analysis water exhibits two different compositions: fresh f...

In order to characterize the chemical composition and age of water circulating in critical zone Strengbach catchment (Vosges mountains, France), samples from springs, 10–15 m deep piezometers 50–120 boreholes were collected analyzed elementary concentrations, Sr, Nd, U isotopic ratios, chlorofluorocarbon (CFC) sulfur hexafluoride (SF6) concentrations. The results evidence a clear distinction be...

Intercomparison of surface water-groundwater (SW-GW) exchange fluxes at the regional scale is rarely undertaken, mainly because estimates are method and scale-dependent usually associated with large errors. In present study, we compare SW-GW calculated from a multitracer mass balance in river, an application Darcy's law using near-river piezometers surface-subsurface flow model calibrated catch...

Predicting the fate and transport of redox-sensitive species in ground water systems requires an accurate characterization of the distribution and concentrations of all related (or interdependent) chemical constituents and the reaction rates at which these constituents interact. Ground and surface water sampling of chemical and physical properties in the streamaquifer system of Colorado’s Arkan...