Detection of Magnetically Susceptible Dyke Swarms in a Fresh Coastal Aquifer

Subsurface faults detection based on magnetic anomalies investigation: A field example at Taba protectorate, South Sinai

“…The magnetic method has a well-established role in the interpretation of the complex structure, tectonic framework, faults, shear zones, and fractures (e.g., Verduzco et al, 2004;Wijns et al, 2005;Anudu et al, 2012;Khalil, 2012;Khalil, 2013). Variety of semiautomatic filtering techniques based on the derivatives of the magnetic data has been developed for determination of the magnetic source parameters such as locations of boundaries and depths (e.g., Petar Stavrev, 2006;Furness, 2007;Khalil, 2013).…”

“…Variety of semiautomatic filtering techniques based on the derivatives of the magnetic data has been developed for determination of the magnetic source parameters such as locations of boundaries and depths (e.g., Petar Stavrev, 2006;Furness, 2007;Khalil, 2013). Noteworthy, wavelength and wavelets filters applying discrete Fourier-transform algorithms in the wavenumber domain (Cooper and Cowan, 2006) play significant roles in the separation of the surface geology as well as deep tectonic structure (Lahti and Karinen, 2010).…”

“…Noteworthy, the degree of Butterworth filter roll-off is controlled, while leaving the central wavenumber fixed. Usually, filter order "1" is employed for a very gentle roll-off, whereas order "20" or higher is employed for a much sharper roll-off (default value is "8") (Khalil, 2013). In the study area, a BWHP filter of roll-off order "8" and wavelengths b 25, 50, 75, 100, and 150 m were designed to pass the shallower anomalies.…”

Application of electrical resistivity for groundwater exploration in Wadi Rahaba, Shalateen, Egypt

“…Groundwater is considered as a preferable alternative solution to face that type of problems. The study area attracted many authors such as Abdel Moneim (2005), Yousef et al (2009), Shawky et al(2012), Soussa et al (2012) and Khalil (2014). The main objective of this study is to identify the shallow aquifer and salt/fresh water zone distribution in the study area using geophysical technique represented by electrical resistivity method.…”

“…The rainfall plays an important role as it is considered as the main source of aquifer recharge. The annual rainfall is less than 150 mm/year (Khalil, 2014), while the relative humidity ranges between 28% and 52% (Hassanein et al, 2004).…”