Firas Hamed AL-Menshed

• PhD
• Head of Department at General Commission for Groundwater

2D imaging technique was applied in (8) transects near a pit of contaminated water near contaminated well southeast of Karbala city, Iraq. Each transect was 30 m long with 1 m electrode spacing. Data acquisition was fulfilled by using Wenner electrode array. The resistivity of water-contaminated zone is found less than 3Ω.m and the top dry zone rec...

A non-symmetrical azimuthal resistivity survey was applied with three different types of electrode arrays (Wenner, Schlumberger and polar dipole–dipole arrays) at two sites near water wells contaminated with hydrocarbon materials in order to determine the flow direction of movement of a hydrocarbon mass in the unsaturated zone. A subsurface plume o...

This research is an attempt to accomplish a 3-D resistivity imaging survey, which was carried out near a water well contaminated with hydrocarbon materials in Karbala governorate. Two-dimensional resistivity imaging measurements were collected along four parallel profiles, using a Wenner array with electrode spacing of 1 m. The RES3DINV program was...

The two-dimensional electrical resistivity imaging method was applied at four selected sites between the Hit-Kubaiysa areas to determine the boundaries of the aquifer on the processed (inverse) profiles. This technique was implemented by using a Wenner-Schlumberger array along four 2D surveying traverse lines. Each line has a length of 1190 m, with...

This study investigates current radioactivity levels in the Hit-Kubaisa area, Anbar Governorate, Iraq, considering recent population expansion and the development of unpaved roads and buildings. The research aims to assess radiation doses and environmental hazards, particularly in areas covered with recently supplied soil materials. Additionally, i...

The resistivity method was used to investigate the variation of the resistivity values of the sediment sequence to determine the contact between the Fatha and Injana formations in Husaybah Al-Sharqiyah, the Western part of Iraq. Three traverses were carried out in the study area by the Wenner-Schlumberger array. The method's results help to define...

A 2D Electrical Resistivity Imaging survey was conducted at the Al-Jadiriya Campus of Baghdad University. The 2D resistivity survey was achieved on two profiles using the Wenner- Schlumberger configuration. The length of each profile is 80 meters, and the spacing between adjacent electrodes is 1 m. The obtained resistivity data were interpreted usi...

The two-dimensional electrical resistivity imaging technique was used to examine groundwater in western Ramadi. The survey was performed with a factor (n) and a-spacing values of 6 and 5 m, respectively. The inverse models clearly show the resistivity variation between the anomalous parts of the water table and all the sediments. The vertical exten...

Bismayah pumping station southern Baghdad was subjected to differential settlement in soil due to dewatering process. The geophysical electrical resistivity Imaging (ERI) survey technique along with geotechnical information were used to assess this subsidence soil.

Six ERI profiles using Wenner Schlumberger array were carried out at Baghdad University (ALJadiriya campus) to investigate soil at two sites. The spacing between electrodes of four profiles surrounding the new building in the Campus at the first site is 1 m, and the profile length ranges from 50 to 90 m. In comparison, two across profiles in the ga...

Unknown subsurface leaking water sources and possible subsurface seepage from a sewage tank in a garden at Al-Khawarizmi engineering college, University of Baghdad, were detected in this study. The 2D electrical resistivity imaging. The ERI survey is carried out along two lines, 60m and 50m long, with an electrode spacing of 1 m, forming a cross us...

The electrical resistivity method is one of the geophysical methods for detecting weak subsurface zone. The 2D resistivity data were used to compare three electrode configurations, Wenner, Dipole-dipole, and Schlumberger, to detect weak subsurface zones along a profile south of Baghdad near the Bismayah pumping station. The results show many zones...

A survey was conducted to investigate buried archaeological walls near the Ishtar temple in the ancient Babylon city using electrical resistivity tomography and ground‐penetrating radar methods. The survey includes applying 12 electrical resistivity tomography profiles using Dipole‐dipole array and a ground‐penetrating radar grid of 55 m × 50 m usi...

Ramadi city, western Iraq, is considered an area with risks resulting from the presence of gypsum soil near the surface and the water table on shallow depth which facilitates the solubility of the soil and creates a weak area. So a dipole-dipole array with an n factor of 6 and a -spacing of 2 m was used. Ten 2D resistivity imaging traverses and 3D...

Electrical resistivity tomography (ERT) and ground-penetrating radar (GPR) were collected on the eastern side of the northern Ishtar gate in ancient Babylon, Iraq, to locate the palace wall and other surrounding walls. Due to the presence of a low resistivity (highly conductive) top layer associated with brick rubble and other debris, the GPR refle...

The Bismayah pumping station was exposed to differential subsidence in the near surface soil due to the dewatering process. The geophysical surveys via ground penetrating radar (GPR) and electrical resistivity imaging (ERI) were used to assess the subsidence in subsurface soils. Four profiles of ERI using Wenner-Schlumberger array and four lines of...

Ground Penetration Radar investigation was used to survey the Bismayah pumping station site in Baghdad. The survey includes fifteen Ground Penetration Radar survey lines inside and outside the site, an antenna of 250 MHz was used. The total length of survey lines was about 706 m. The results of Ground Penetration Radar lines in outside station's ra...

Electrical resistivity tomography was conducted in nine locations within ancient Babylon city, using the Wenner-Schlumberger array, to map groundwater-bearing layers. The inverted models were integrated and correlated with the geological information extracted from six boreholes drilled during the 1970s. The interpreted inverse models of the Wenner-...

We investigate three types of inhomogeneity and their effect on the measured apparent resistivity and the inverse models of the electrical resistivity tomography (ERT). The inhomogeneity types are produced by the near-surface inhomogeneity (NSI), the very low resistivity (VLR) upper layer, and the High-Low-High (HLH) resistivity upper layer. The ef...

Um El-Adam cavity is one of the well-known cavities inside gypsum rocks in the Hit region, western Iraq, where this was chosen as a case study to evaluate 3D resistivity imaging technique detection and imaging of this type of cavity in complicated lithology. 3D view fulfilled by collating four 2D resistivity-imaging lines. The 2D resistivity imagin...

This study compares three conventional electrode arrays in 2D electrical resistivity imaging surveys by applying them to study the sedimentary layers and the hydrological situation in three coastal locations close to the Khor Al-Zubair, southern Iraq. At each location, a 2D imaging line of 1200 m length was implemented columnar the Khor Channel, us...

The study area intendes for agricultural investment and establishment stations of water pumping for human use to the nearby areas, southwest of Samawah city. Twelve Two-Dimension (2-D) survey points were performed by using Wenner-Schlumberger array configuration to take the measurements. The inverse models of two survey point appear the effect of t...

The 2-D Resistivity imaging survey conducted within the desert area to meet the region's need of groundwater, due to the absence of any surface water, in addition, there are no any geophysical studies carried out previously. Ten point survey was performed to study the ground water aquifers in the southwest of Samawah city, Iraq. The length of the s...

The 2-D Resistivity imaging survey conducted within the desert area to meet the region's need of groundwater, due to the absence of any surface water, in addition, there are no any geophysical studies carried out previously. Ten point survey was performed to study the ground water aquifers in the southwest of Samawah city, Iraq. The length of the s...

Electrical resistivity surveying for delineating seawater intrusion was performed in the Dibdibba aquifer in the area between the cities of Al-Zubair–Safwan and Al-Zubair–Umm Qasr in the vicinity of Khor AL-Zubair Channel, Basrah governorate, southern Iraq. Fourteen 2D resistivity profiles with a total length of 14 km were collected in the study ar...

Shallow vertical electrical sounding (VES) technique with Schlumberger electrode array (maximum distance between current electrodes was 50 m) through 25 VES points distributed on five traverses. Two 2D imaging lines with Wenner electrode array 30 m each corresponding to two VES traverses were conducted near well water contaminated with hydrocarbon...

The 3D resistivity imaging survey was carried out over Um El-Githoaa cavity in Hit area, western Iraq. Resistivity data were collected along four parallel traverses using Dipole-dipole array with electrode spacing of 2m and (n) factor equal to 6. Inversion 3D models of standard least-squares method and robust constrain method for Um El-Githoaa cavi...