Freshwater resources on small coral islands mainly exist in the form of freshwater lenses. The lens is highly vulnerable to salinization due natural recharge variations and urbanization construction. However, it unclear how a evolves under influence construction which factors control its evolution. Based hydrogeological data island China, corresponding 3D numerical model was established by Visu...

A key aspect of estimating transmissivity distributions from pumping tests is the spatial resolution of the estimation. Some assumption of spatial structure is needed to make an inversion possible. Both the nature of groundwater flow and assumed structure cause a smeared estimate. This research is focused on the how information content of the data smears the estimate. The inversion procedure ne...

the current study investigated and compared data generation methods for groundwater modeling. thesemethods can be divided into two classes; geostatistic and probabilistic. by comparing geostatistic methods,the best method was chosen and the hydraulic conductivity of the aquifer was generated for a study area ina grid (9-cell) format. after observing weak spatial correlation between the data, th...

Abstract Water resources management in high-stress regions is a large-scale problem affecting food and water security. Therefore, modern irrigation systems such as sprinklers, subsurface, drip irrigations are applied to manage the shortage of Nile delta. Because increase population rate climate change, freshwater supplies significantly limited must be efficiently managed. Consequently, Egypt pl...

Low permeability zones (LPZs) are major sources of groundwater contamination after active remediation to remove pollutants in adjacent high (HPZs). Slow back diffusion from LPZs HPZs can extend management polluted sites by decades. Numerical models often used simulate diffusion, estimate cleanup times, and develop site strategies. Sharp concentration gradients present at the interface between L...

Abstract A three‐dimensional variably saturated flow model was developed for assessing future global water resources and parameterized groundwater pumping. We applied this to an actual watershed verify its validity as Earth System Model. For applicability, the parameterization method multi‐layered pumping verified through comparison with observations MODFLOW results. The proposed in study is ap...