الفهرس 
LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
The focus of this work is to develop a numerical model to study tidal effects on saltwater intrusion in coastal heterogeneous aquifers. Also, to get an idea about, the transition effect of battery of injection wells on the final solution of the coastal aquifer management problem. Two major approaches are used in this study: the first approach applied Finite Element Method (FEM) to simulate the hydraulic responses of the aquifer in large time scale and it is coupled with Finite Difference Method (FDM), in the second sub-model, to simulate the corresponding ones in small time scale. Model is modified to study the effect of different type of tidal waves on both the groundwater fluctuation and saltwater intrusion in heterogeneous confined and unconfined aquifers. The developed model is calibrated and applied on the quaternary unconfined aquifer in El Arish-Rafah area, Egypt and the unconfined aquifer at Miami Beach, Spain. The second approach presented a suggested solution for problem of saltwater intrusion using a system of recharged treated water. The study considers various conditions by changing the well spacing, different rates of injection and duration of injection. This system is applied to solve the problem of saltwater intrusion in Quaternary Aquifer in Delta Wadi El-Arish (QADWA), Egypt.