The use of magnetic and geo-electrical data to delineate the subsurface structures and groundwater potentiality in Southeastern Sinai, Egypt (2013)

The study area is located in the southern part of
Sinai Peninsula. This study was done to delineate the
subsurface structure of the basement rocks affecting the
groundwater potentiality in the study area and to perform
the lateral and vertical variations in the subsurface lithologic properties. To achieve these, a high-resolution total
intensity magnetic map and geo-electrical survey were
acquired. Two-dimensional power spectrum, analytical
signal, and Euler deconvolution techniques are applied on
magnetic data. The geo-electric data interpretations concluded that, the study area can be classified into five units
of sediments arranged as: (1) the top surficial layer of dry
sand and gravels; (2) the second layer of silty sand layer
with thickness ranging from 5 to 35 m; (3) the third layer
of dry sand with thickness ranging from 5 to 130 m; (4) the
fourth layer composed of saturated sand which was considered as the water-bearing zone of the investigated
interval, its thickness ranges between 50m and more than
200 m; (5) the fifth layer is interpreted as basement rocks.
The depth to the basement surface has an average value of
156 m at the eastern side and 758 m at the western side of
the study area. This area is characterized by a graben
structure bounded by major faults striking in the NW–SE
direction and is considered one of the most promising
regions for water resources in Sinai