الفهرس 
CHAPTER ONE INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The present study inWadiGerafy area is done to contribute in the development of east central Sinai by helping to explore and find the groundwater aquifers and mapping the surface and subsurface structures controlling the regional geometry of the groundwater aquifers, groundwater flow and accumulation in order to raise the economic value and outcomes of this area. The study area is located in the Naqab area, east central of Sinai, Egypt, between latitudes 29°30’, 30° 30’ N and longitudes 33°20’,34° 55’ 00” E. The area is apart of East central Sinai which is covered by crystalline rocks of precambrian and sedimentary rocks of Cretaceous and Eocene ages. To achieve the objectives of this study, two major techniques were used:
1-Remote sensing (RS) and geographic information system (GIS),
2-Land geophysical techniques (magnetic, gravity, electrical resistivity).
The (RS) and (GIS) technique was used to detect the surface lineament structures and hydrogeological parameters (drainage pattern, basins, watershed, 3D-view of SRTM DEM and streams, drainage pattern with lineament structures). The geophysical measurements were used to explore the groundwater aquifers, the subsurface structures affecting the movement and accumulation of the groundwater, detection of subsurface rock units, and the depth to the surface of the basement rocks and thus locate and define the extent of sedimentary basins.