A5073514224- Geophysical and Geoelectrical Methods
- Geophysical Methods and Applications
- Geological and Geophysical Studies Worldwide
- Planetary Science and Exploration
- Seismic Waves and Analysis
- Mine drainage and remediation techniques
- Geological and Tectonic Studies in Latin America
- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Paleontology and Stratigraphy of Fossils
- Archaeological and Historical Studies
- Geological and Geophysical Studies
- Landslides and related hazards
- Geomagnetism and Paleomagnetism Studies
- Geological formations and processes
- Geochemistry and Geologic Mapping
- Archaeological and Geological Studies
- Historical and socio-economic studies of Spain and related regions
- Metal Extraction and Bioleaching
- Astro and Planetary Science
- Space Exploration and Technology
- Aeolian processes and effects
- Microbial Community Ecology and Physiology
- Methane Hydrates and Related Phenomena
Universidad Rey Juan Carlos
2015-2025
Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán
2023
University of Calabar
2022
Vietnam National University, Hanoi
2022
King Saud University
2022
Universidad Nacional de Colombia
2021
Universidad Complutense de Madrid
2005
This study involves the use of high-resolution airborne magnetic data to evaluate thicknesses sedimentary series in Bornu Basin, Northeast Nigeria, using three depth approximation techniques (source parameter imaging, standard Euler deconvolution, and 2D GM-SYS forward modelling methods). Three evenly spaced profiles were drawn N-S direction on total intensity map perpendicular regional structures. These used generate 2-D models. The signatures visually assessed determine thickness...
Lineament detector and depth estimation method involving modern aeromagnetic data were employed to study parts of the Obudu Plateau Lower Benue Trough (southeast Nigeria) with aim mapping thermo-tectonic geologic structures estimating sediment thicknesses. In this investigation, enhanced horizontal gradient amplitude (EHGA) (applied both simulated real data) tilt approaches operated. The magnetic model employing EHGA generated sharp properly defined edges bodies capacity place peaks over...
One major purpose of interpretation magnetic data is to highlight edges geology structures. In this paper, we applied the edge methods such as enhancement total gradient (ETG), normalized horizontal (TDX), theta map (TM) and fast sigmoid (FSED) delineate geological structures that appear lineaments in transformed anomaly maps. Initially, these were estimated on a model for understanding their capability. Further, real aeromagnetic determining Wadi Umm Dulfah area. Additionally, depths...
In this paper, a geophysical strategy based on the recently proposed Manta-Ray Foraging (MRF) Optimization algorithm is adapted and presented for blind computation of depth/shape defining parameters from magnetic anomalies due to buried geo-bodies. The model deciphered are coefficient amplitude (K), structure’s origin (x 0 ), depth (z), magnetization angle (α), shape factor (q). After detailed piecewise design, new inversion tool originally trial-tested anomaly data generated synthetically....
Abstract Structural lineaments of Southeast Nigeria were delineated using high-resolution aeromagnetic data. Advanced methods such as enhanced horizontal gradient amplitude (EHGA) involving a 3D model and tilt depth method (TDM) used in this study. The simulated magnetic the EHGA detector positioned peaks over source borders created sharp clear edges for sources. TDM is cutting-edge determination revealing contacts thickness sedimentary bodies that vary from ∼500 to ∼2,500 m ∼3,000 ∼5,000 m,...
Edge detection techniques identify the horizontal extents of underground geological bodies and work well in association with magnetic as seismic data. Even though detected edges might not be a lithological contact, they offer first-hand information regarding various rocks that ultimately offers an extra argument for existing tectonics. Most edge enhancement depend either on gradient or total potential fields. As now, no single filter performance is best all conditions. The study proposes...
This study used spatiotemporal land gravity data to investigate the 2021 eruption that occurred in Cumbre Vieja volcano (La Palma, Canary Islands). First, we produced a density model by inverting local field using collected July 2005 and 2021. revealed low-density body beneath western flank of explains highly fractured altered structure related active hydrothermal system. Then, retrieved changes GNSS vertical displacements from repeated measurements made network before (July 2021) after...
Aeromagnetic data from the Ogoja region, Southeast Nigeria, were enhanced using high-precision methods including tilt angle of total horizontal gradient (TAHG), softsign function (SF), and improved logistic (IL) with aim creating a new structural map. This map can help improve understanding trend, spatial distribution, pattern lineaments. The TAHG, SF, IL generated geologic structures correlating trends, distributions, patterns. However, SF techniques mapped borders more precisely....
The Abakaliki Anticlinorium and its adjoining areas were appraised with the object of delineating high geothermal potential zones. Spectral depth analysis involving an improved centroid technique was used to analyze high-quality magnetic data. obtained parameters gridded map various features within investigated area. results varied from 4.99–9.35 km, 2.31–6.15 6.11–16.28 35.63°C–94.93°C/km, 89.07–237.32 mW/m 2 for depth, top Curie point gradient, heat flow values, respectively. delineated...
ABSTRACT Mining activity in the Iberian Pyrite Belt, on south‐west of Peninsula, has generated a great amount mine tailing ponds, which once extractive is finished, are abandoned and become serious environmental problem. Here we present results applying electrical resistivity tomography (ERT) technique to characterize ponds two sites: Monte Romero Mina Concepción. ERT allowed us determine both general geometry pond’s base maximum thickness tailings. In all cases, contrast between infilling...
Abstract Similarities between the Atacama Desert (Chile) and Mars include extreme aridity, highly oxidizing chemistry, intense ultraviolet radiation that promoted photochemical production of perchlorates nitrates. Concentration these ions under hyperarid conditions led to formation nitrate‐ perchlorate‐bearing deposits in ephemeral lakes, followed by later deposition chlorides sulfates. At some locations, such as Salar Grande, hypersaline have remained unaltered for millions years. We...
La Banya spit, located at the south of River Ebro Delta, is a sandy formation, developed by annexation bars forming successive beach ridges, which are oriented and modeled eastern southern waves. The initial ridges run parallel to coastline, above them small dunes developed, crests dominant winds, foredune barchans. This study attempted test number techniques in order understand dune dynamic on this coastal spit between 2004 2012: LiDAR data were used reconstruct changes surface volume...
Mapping the boundaries of subsurface geological structures constitutes a fundamental aspect interpreting gravity data. Various methods relying on derivatives have been introduced to delineate these boundaries. However, approaches are not without their limitations, often leading generation false edges or resulting in divergent outcomes. This article introduces novel method that utilizes power law approach and balanced total horizontal derivative for mapping data edges. To assess robustness...