- Geophysical and Geoelectrical Methods
- Geophysical Methods and Applications
- Groundwater and Watershed Analysis
- Seismic Waves and Analysis
- Geochemistry and Geologic Mapping
- Seismic Imaging and Inversion Techniques
- Groundwater and Isotope Geochemistry
- Archaeological Research and Protection
- Earthquake Detection and Analysis
- Archaeology and Historical Studies
- Geological and Geophysical Studies
- Groundwater flow and contamination studies
- 3D Surveying and Cultural Heritage
- Hydrological Forecasting Using AI
- Landslides and related hazards
- Ancient Mediterranean Archaeology and History
- Flood Risk Assessment and Management
- Hydrology and Watershed Management Studies
- Geological and Geophysical Studies Worldwide
- Water Quality and Pollution Assessment
- Remote Sensing and LiDAR Applications
- Automated Road and Building Extraction
- Soil Geostatistics and Mapping
- Reservoir Engineering and Simulation Methods
University of Cologne
2017-2025
An assessment of potential groundwater areas in the Ifni basin, located western Anti-Atlas range Morocco, was conducted based on a multicriteria analytical approach that integrated set geomorphological and hydroclimatic factors influencing availability this resource. This involved use geographic information systems (GIS) hierarchical process (AHP) models. Different were classified weighted according to their contribution impact reserves. Their normalized weights evaluated using pairwise...
Abstract One of the main goals interpretation magnetic data is imaging boundaries subsurface structures. In this study, a new edge detector called improved horizontal tilt angle (impTDX) has been introduced and tested on synthetic measured data. The filter exhibits high efficiency not only in detecting sources, but also determining sources from different depth levels. impTDX produces more precise sharper boundaries, increases discernibility neighboring anomalies, advantage avoiding creation...
Groundwater salinization poses a critical threat to sustainable development in arid and semi-arid rurbanizing regions, exemplified by Kerman Province, Iran. This region experiences groundwater ecosystem degradation as result of the rapid conversion rural agricultural land urban areas under chronic drought conditions. study aims enhance Pollution Risk (GwPR) mapping integrating DRASTIC index with machine learning (ML) models, including Random Forest (RF), Boosted Regression Trees (BRT),...
Groundwater availability in semi-arid regions like the Widyan Basin, Kingdom of Saudi Arabia (KSA), is a critical challenge due to climatic, topographic, and hydrological variations. The accurate identification groundwater zones essential for sustainable development. Therefore, this study combines remote-sensing datasets (Sentinel-2 ASTER-DEM) with conventional data using Geographic Information System (GIS) analytical hierarchy process (AHP) techniques delineate potential (GWPZs). basin’s...
The present study was designed to give a clear and comprehensive understanding of the structural situation in Sohag region surrounding area by applying several edge detectors aeromagnetic data. In this research, International Geomagnetic Reference Field (IGRF) values were removed from data obtained then reduced north magnetic pole (RTP). A combination different applied determine boundaries sources. good correlation noticed between these techniques, indicating that their integration can...
Abstract Electrical resistivity tomography (ERT) and ground magnetic surveys were applied to characterize an old uncontrolled landfill in a former exploited sand gravel quarry area the north-west of city Cologne, Germany. The total field its vertical gradient recorded using proton precession magnetometer cover about 43,250 m 2 . data transferred frequency domain then reduced north pole. amplitude analytical signal was calculated define materials within outside landfill. Eight ERT profiles...
This study investigates the presence and spatial extent of saline water seawater intrusion in Subiya Peninsula, Kuwait, a region designated for establishment new Silk City. We collected transient electromagnetic (TEM) data at 63 stations using coincident loop setup on regional, as well local, scale. The were analyzed through conventional 1D inversion techniques, including Occam Levenberg–Marquardt methods, to create detailed resistivity models subsurface. Our findings indicate significant...
Abstract This study applies the cuckoo optimization algorithm (COA), inspired by brood reproduction technique of birds, to interpret magnetic anomalies 2D dipping dyke-like structures. The primary issue addressed is need for accurate delineation and explanation dyke parameters, which are crucial visualizing propagation (important volcanic hazard assessment), tracing mineralized zones associated with dykes, understanding their geodynamic significance. Our method identifies parameters at...
The Mateur aquifer system in Northern Tunisia was examined using data from 19 water boreholes, 69 vertical electrical sounding (VES) stations, and a Sentinel-2 satellite image. Available boreholes their corresponding logs were compared to define precisely the multi-layer system, including Quaternary Campanian aquifers of plain. Quantitative interpretation qualitative evaluation VES conducted geometry these reservoirs. These interpretations enhanced by remote sensing imagery processing, which...
The geoelectric survey includes 93 Vertical Electric Soundings (VES) and 26 TEM stations were conducted to delineate the subsurface structures hydrogeological regime of El-Nubariya–Wadi El-Natrun area. VESes AB/2 was varying from 1 up 700 m in successive steps, while measured using coincident loop 50 side length.The interpretation geoelectrical data shows that depth main aquifer ranges 6 at northern part near Nubariya city about 90 southern parts where it increases south southeast...
A new phase-based filter (called improved analytical signal (IAS)) is introduced to detect buried unexploded ordnance (UXO) precisely from magnetic fields using the arcsine function of ratio first-order vertical derivative derivatives x-, y-, and z-components signal. The calculations are computed in frequency domain then transformed back into space inverse Fourier transform. has been tested on data collected at a test site with UXO bodies variable orientation. It was also validated measured...
The current study focuses mainly on understanding the hydrogeological framework of southeast Hiw, Qena, Egypt, as one promising regions for land reclamation and future development. This includes defining groundwater aquifers delineating their lateral extents, depths, thicknesses, well getting some information quality in area. These objectives have been accomplished by integrated interpretation remote sensing imagery vertical electrical sounding (VES) data. digital elevation model (DEM)...
It has recently become more popular to involve 3-D modeling and digital documentation in the conservation restoration of heritage sites. The main objective current study is develop a process using laser scanning for Abu Simbel Temple, which one most famous archaeological sites Egypt. We focus on these techniques replace traditional methods building documentation. To create model with geographic coordinates measure rate deformation, precise geodetic network five points was established around...
The transition zone between the North and Central Eastern Desert of Egypt has been investigated using airborne magnetic radiometric data to better characterize subsurface structures, tectonic framework, mineral occurrences in area. were subjected several filtering depth estimation techniques including edge detectors, Euler deconvolution, 2D forward modeling 3D inversion. Statistical trend analysis lineaments obtained from geological filtered maps shows that major trends are NNE–SSW, NE–SW,...
Abstract The gravity data of Gebel El-Maghara area and its surrounding region in northern Sinai Peninsula, Egypt have been subjected to high precision edge detection filters order evaluate the structural tectonic settings study area. Various traditional modern were tested on synthetic then most successful boundaries causative bodies used accomplish study's objectives. By examining power spectrum data, three maps generated using low-pass, band-pass high-pass filters, respectively,...
The main purpose of the present study is to identify surface and subsurface structural features configuration basement in area around Sohag Governorate using Geographic Information System (GIS) potential field data (gravity aeromagnetic). hill shade was found as most suitable image for lineament delineation produce a fault prediction map overlay model technique. faults contacts were detected traced out from reduced pole (RTP) magnetic, Bouguer gravity anomaly, tilt derivative maps. has been...
Abstract Geophysical techniques have become increasingly crucial for characterizing landfills, offering noninvasive methods subsurface exploration and contamination assessment. In this study, an integrated geophysical approach—utilizing magnetic, electrical resistivity tomography (ERT), transient electromagnetic (TEM) surveys—was employed to characterize the Weidenpesch landfill in Cologne, Germany assess potential groundwater contamination. The results from these were consistent,...
SUMMARY Induced polarization (IP) effects can significantly affect and superimpose the inductive earth response, leading to heavily distorted data and, if overlooked, false geological interpretation. In this paper, we implemented Levenberg–Marquardt (LM) very fast simulated annealing (VFSA) algorithms recover IP from central loop transient electromagnetic (TEM) data. To incorporate effect in TEM used Cole–Cole parametrization, maximum phase angle (MPA), imaginary conductivity (MIC) Jeffrey...
ABSTRACT A combination of electrical resistivity tomography (ERT) and magnetic gradiometry was selected to examine a hypothesis concerning the presence remains one oldest archaeological churches in Rhineland, located Neuss‐Norf, Germany. The gradiometer survey carried out measure vertical gradient field using proton precession magnetometer along several profiles. data were reduced pole; then analytic signal power spectrum techniques applied. ERT based on results, both Wenner dipole–dipole...
Summary In recent years, geophysical methods have been broadly used in investigating the environmental problems. One of most important and serious problem is buried waste site deposits. many cases, these kinds sites constitute a main source for groundwater contamination. present study, combination magnetic ERT was employed to determine geometry landfill near Cologne city, Germany detect potential contaminated zones. The results this research suggested that has an average length 190 m width...