An integrated approach to evaluate the possibility of urban development around Sohag Governorate, Egypt, using potential field data

Ghazala, Hosni; Ibraheem, Ismael M.; Haggag, Menna; Lamees, M.

doi:10.1007/s12517-018-3535-1

Cited by 17 publications

(5 citation statements)

References 37 publications

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“…The spectral analysis technique was used in order to determine the depth of the buried magnetic sources (Bhattacharyya, 1966; Spector and Grant, 1970; Cassano and Rocca, 1975; Hahn et al ., 1976; Fedi et al ., 1997; Ghazala et al ., 2018; Ibraheem et al ., 2018b). The power spectrum of the magnetic data is the product of the two‐dimensional (2D) Fourier transform and its complex conjugate.…”

Section: Geophysical Methodsmentioning

confidence: 99%

Archaeogeophysical exploration in Neuss‐Norf, Germany using electrical resistivity tomography and magnetic data

Ibraheem

Bergers

Tezkan

2021

Near Surface Geophysics

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A combination of electrical resistivity tomography (ERT) and magnetic gradiometry was selected to examine a hypothesis concerning the presence of remains of one of the oldest archaeological churches in the Rhineland, located in Neuss‐Norf, Germany. The gradiometer survey was carried out to measure the vertical gradient of the magnetic field using a proton precession magnetometer along several profiles. The magnetic data were reduced to the magnetic pole; then analytic signal and power spectrum techniques were applied. The ERT survey was based on the magnetic results, and both Wenner and dipole–dipole configurations were employed to collect the apparent resistivity data along 12 ERT profiles. The field ERT data from these two arrays were merged into one dataset to form a non‐conventional mixed array. The robust (blocky) inversion technique was applied to the resistivity data in order to derive the two‐dimensional resistivity distribution of the subsurface. Despite the noisy surroundings, the magnetic survey was able to give an indication of potential walls of the ancient church in addition to several subsurface magnetic sources. Moreover, highly resistivity anomalies were observed within the first 1–2 m of the subsurface soil and were interpreted as possible remains of man‐made structures. This depth range was also confirmed by the spectral analysis of the magnetic data. A strong consistency between the two methods was observed in some locations of the site. In addition, the ERT measurements confirm and complement most of the magnetic results. We successfully detected anomalous zones that could be associated with the walls of at least one ancient church building in addition to several possible archaeological structures in the survey area.

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Section: Geophysical Methodsmentioning

confidence: 99%

Archaeogeophysical exploration in Neuss‐Norf, Germany using electrical resistivity tomography and magnetic data

Ibraheem

Bergers

Tezkan

2021

Near Surface Geophysics

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“…The method can be applied to huge data sets using the moving window technique, where the structural index (SI) must be assumed before applying the technique. This is a critical procedure as the estimated depth can be greatly affected by using the wrong structure index [23,24]. Like all the techniques introduced above, noise may be increased in the data as the Euler technique uses first-order derivatives.…”

Section: Background and Methodologymentioning

confidence: 99%

“…To the southeast of Gerga city, Precambrian basement rock fragments were found within Qena and Abassia Formations [25]. The subsurface stratigraphy was inferred from the lithology of the Balyana-1 well [24], where it encounters the Precambrian crystalline basement at a depth of 1640 m. The subsurface sediments belong to the Cretaceous, Tertiary, and Quaternary [32]. It is worth to mention that an uneconomic amount of gas was reported at a depth of 880 m within the Nile Valley fill sediments.…”

Section: Location Geology and Structure Of The Study Areamentioning

confidence: 99%

Edge Detectors as Structural Imaging Tools Using Aeromagnetic Data: A Case Study of Sohag Area, Egypt

Ibraheem

Haggag²,

Tezkan

2019

Geosciences

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The present study was designed to give a clear and comprehensive understanding of the structural situation in the Sohag region and surrounding area by applying several edge detectors to aeromagnetic data. In this research, the International Geomagnetic Reference Field (IGRF) values were removed from the aeromagnetic data and the data obtained were then reduced to the north magnetic pole (RTP). A combination of different edge detectors was applied to determine the boundaries of the magnetic sources. A good correlation was noticed between these techniques, indicating that their integration can contribute to delineating the structural framework of the area. Consequently, a detailed structural map based on the results was constructed. Generally, E-W, N45-60E, and N15-30W directions represent the main tectonic trends in the survey area. The structural map shows the existence of two main basins constituting the most probable places for hydrocarbon accumulation. The results of this study provide structural information that can constitute an invaluable contribution to the gas and oil exploration process in this promising area. They show also that the decision in choosing the location of the drilled boreholes (Balyana-1 and Gerga) was incorrect, as they were drilled in localities within an area of a thin sedimentary cover.

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“…Seven 2D magnetic models (W-W', A-A', B-B', C-C', D-D', E-E', and F-F') were constructed along profiles dissecting the study area in the NW-SE and NE-SW directions in order to display the basement topography using the GM-SYS software of NGA (2004) (Figure 7b) [70]. The basement surface was calibrated by the basement depth in El-Balyana (EC-70-1) borehole (1.737 km) at the northwest and Qena-1 borehole (0.54 km) at the northeast near the study area [71,72]. The basement rocks were considered of granitic composition and the sedimentary cover was assumed to have a minimum magnetic susceptibility of about 0.000041 cgs according to the boreholes and geophysical studies at adjacent areas (e.g., ElGalladi, 2007) [24].…”

Section: The Structural Framework Of the Study Areamentioning

confidence: 99%

Mapping the Groundwater Potentiality of West Qena Area, Egypt, Using Integrated Remote Sensing and Hydro-Geophysical Techniques

et al. 2020

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The integrated use of remote sensing imagery and hydro-geophysical field surveys is a well-established approach to map the hydrogeological framework, and thus explore and evaluate the groundwater potentiality of desert lands, where groundwater is considered as the main source of freshwater. This study uses such integrated approach to map the groundwater potentiality of the desert alluvial floodplain of the Nile Valley west of Qena, Egypt, as alternative water source to the River Nile. Typically ground gradient, faults and their stress field, lateral variation of rock permeability, drainage patterns, watersheds, rainfall, lithology, and soil types are the main factors believed to affect the groundwater recharge and storage from the infiltration of present-time and paleo-runoff. Following this generally accepted approach, different remote sensing data sets (SRTM DEM, Landsat-8, ALOS/PALSAR-1, Sentinel-1, and TRMM) as well as auxiliary maps (geological and soil maps) were used to identify and map these factors and prepare thematic maps portraying the different influences they exert on the groundwater recharge. These thematic maps were overlaid and integrated using weights in a GIS framework to generate the groundwater potentiality map which categorizes the different recharge capabilities into five zones. Moreover, the aeromagnetic data were processed to map the deep-seated structures and estimate the depth to basement rocks that may control the groundwater occurrence. In addition, the vertical electrical sounding (VES) measurements were applied and calibrated with the available borehole data to delineate the subsurface geological and hydrogeological setting as well as the groundwater aquifers. Different geoelectric cross-sections and hydro-geophysical maps were constructed using the borehole information and VES interpretation results to show the lateral extension of the different lithological units, groundwater-bearing zones, water table, and the saturated thickness of the aquifer. The GIS model and geophysical results show that the southwest part of Nag’a Hammadi-El-Ghoneimia stretch has very high recharge and storage potentiality and is characterized by the presence of two groundwater-bearing zones. The shallow groundwater aquifer is located at a depth of 30 m with a saturation thickness of more than 43 m. However, there are NW–SE faults crossing the study area and most likely serve as recharge conduits by connecting the shallow aquifer with the deeper ones. Such aquifers connection has been confirmed by investigating the chemical and isotopic composition of their groundwater.

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An integrated approach to evaluate the possibility of urban development around Sohag Governorate, Egypt, using potential field data

Cited by 17 publications

References 37 publications

Archaeogeophysical exploration in Neuss‐Norf, Germany using electrical resistivity tomography and magnetic data

Archaeogeophysical exploration in Neuss‐Norf, Germany using electrical resistivity tomography and magnetic data

Edge Detectors as Structural Imaging Tools Using Aeromagnetic Data: A Case Study of Sohag Area, Egypt

Mapping the Groundwater Potentiality of West Qena Area, Egypt, Using Integrated Remote Sensing and Hydro-Geophysical Techniques

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