Levi Nwankwo

Levi Nwankwo
Federal University, Kashere · Department of Physics

About

38
Publications
11,256
Reads
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408
Citations
Citations since 2016
14 Research Items
324 Citations
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
20162017201820192020202120220102030405060
Introduction
Levi Nwankwo currently works at Federal University Kashere, Nigeria.

Publications

Publications (38)
Article
Full-text available
Micro-hydrokinetic river (MHR) system is one of the promising technologies to be used for remote rural electrification. It simply requires the flow of water instead of elevation or head, leading to expensive civil works. It also demonstrates an economic benefit offered by a MHR system when compared to the commonly used systems such as solar, wind a...
Article
The present study interpreted high-resolution aeromagnetic data using spectral analysis interpretation technique to carry out a regional estimation of geothermal resources of the entire Benue trough, Nigeria. The data was partitioned into 46 overlapping blocks and the depths to top, bottom and center of the magnetic sources for each overlapping dat...
Article
Full-text available
The present study interpreted high-resolution aeromagnetic data using spectral analysis interpretation technique to carry out a regional estimation of geothermal resources of the entire Benue trough, Nigeria. The data was partitioned into 46 overlapping blocks and the depths to top, bottom, and center of the magnetic sources for each overlapping da...
Article
An effort has been made in this paper to advocate a panacea to the prevailing energy crisis in Nigeria by reviewing the country’s geothermal energy resource potential from regional aeromagnetic calculations. There is widespread occurrence of warm/hot springs in Nigeria, which gives credence to the availability and abundance of geothermal reserves....
Article
Full-text available
Depth to magnetic basement and mapping of source geometries were estimated from High Resolution Aeromagnetic (HRAM) data of Benisheikh using wavelet transformation technique. This technique was chosen because it has been proven to be a powerful and efficient tool in interpreting potential field data. In this work, a non-orthogonal wavelet function...
Article
Full-text available
Understanding the thermal distribution within the crust and rheology of the earth’s lithosphere requires the knowledge of the Depth to the Bottom of Magnetic Sources (DBMS). This depth is an important parameter in this regard, which can be derived from aeromagnetic data and can be used as a representation for temperature at depth where heat flow va...
Article
Full-text available
A regional estimation of Curie-point depths (CPDs) and succeeding geothermal gradients and subsurface crustal heat flow has been carried out from the spectral centroid analysis of the recently acquired high-resolution aeromagnetic (HRAM) data of the entire Bida Basin in north-central Nigeria. The HRAM data were divided into 28 overlapping blocks, a...
Article
Geomagnetic modeling and Euler deconvolution technique was used quantitatively to decipher the crustal structure of the Ilesha, Nigeria. The total magnetic intensity map of the study area was first reduced to the magnetic pole. Next, analytic signal map was obtained from the pole reduced map, which was used to delineate the boundaries and location...
Article
Full-text available
The environmental security and quality of every society are important in the determination of human development and socioeconomic developments and its level of peace. The potential of environmental security of a location depends on the sustainable management of its forest. This is because of the ecological services being rendered by forest to the e...
Article
Full-text available
A geophysical investigation of groundwater contamination within the solid waste disposal site was carried out at Tanke Tipper Garage, a typical non-controlled open dumpsite located in Ilorin, Nigeria. The aim of the investigation is to study the spatial distribution of contaminant plumes in the groundwater and ascertain if areas that can be free fr...
Article
Full-text available
Mining and smelting activities are the main causes for the increasing pollution of heavy metals from water sources. The toxicity of these heavy metals from the mining, milling and smelting companies can cause harmful and even lethal effects on the human health. The objective of this study was to investigate the level of As, Cr, Zn, Mg, Fe, Pb, Cd,...
Article
Full-text available
The depth to magnetic sources has been estimated from gradient inversion analysis of the acquired aeromagnetic magnetic data of Binji, northwestern Nigeria. The study area is bounded by Longitude 4° 30' E and 5° E and Latitude 13° N and 13° 30' N. The total magnetic field was separated into regional and residual fields using least squares polynomia...
Article
An evaluation of Curie-point depths, geothermal gradients and near-surface heat flow has been carried out from the spectral analysis of the recently acquired high resolution aeromagnetic (HRAM) data of the entire Sokoto Basin in northwestern Nigeria. The HRAM data was divided into twenty two (22) overlapping blocks and each block analyzed using the...
Article
The recent paper by Obande et al. (2014) [Spectral analysis of aeromagnetic data for geothermal investigation of Wikki warm Spring, north-east Nigeria] applied the centroid method adopted by Okubo et al. (1985) in the estimation of Curie Point Depth (CPD) from spectral analysis of aeromagnetic data, however the implementation of the background math...
Article
An estimate of depths to the bottom of magnetic sources (DBMS) in the upper part of Sokoto Basin, north-west Nigeria has been made from the modified centroid method based on a fractal source distribution of magnetic sources and spectral analysis of aeromagnetic data. DBMS is used as an estimate of the Curie-point depth and hence a proxy for tempera...
Article
Full-text available
Measurements of ionizing radiation and corresponding dose rate around bottling and pharmaceutical facilities in Ilorin, Nigeria, have been carried out using three duly calibrated Radalert Nuclear Radiation Meters and Global Positioning System. The survey meters were held at 1 m above the ground surface while obtaining readings at 31 locations withi...
Article
Full-text available
Aeromagnetic data of a part of Chad basin, Nigeria, has been analyzed using the wavelet transform method with the aim of estimating the depth to the magnetic basement structures and also to identify the trend of underlying structural features. The wavelet transform was chosen because it has been proven to be a powerful and efficient tool in interpr...
Article
Full-text available
An environmental ionizing radiation survey around quarry sites in Ilorin was carried out using three Radalert Nuclear Radiation Monitors and Global Positioning System (GPS) in order to assess and provide up to date information on radiation levels in the environment. Measured mean radiation levels ranged from 1.11±0.05 to 1.72±0.03 mSv/yr with an av...
Article
Full-text available
The recent paper by Abraham et al. (2014) ‘Spectral analysis of aeromagnetic data for geothermal energy investigation of Ikogosi Warm Spring - Ekiti State, southwestern Nigeria’ applied spectral analysis in the interpretation of aeromagnetic data for estimation of curie-point depths using a data window of 55 × 55 km; however, the employment of such...
Article
Full-text available
s Thermal resistive effect of embedded materials in composite bricks resulting in cooling have been investigated. Different particulate materials and continuously aligned polyethylene fibers were used as supposed thermal resistors in preparing the bricks for houses in the tropical regions. The face change in temperature {Outside temperature(T1)-Inn...
Article
Full-text available
Marbles are formed from recrystallization of limestone or dolomite during metamorphism and occur as a coarse grain rocks composed of interlocking calcite crystals. The structural and porosity analysis of some selected Nigerian marbles were investigated with a view of establishing crystal configuration and constituents of the marble in Nigeria namel...
Article
A geo-resistivity exploration has been carried out for groundwater within the Akobo catchment of the ancient city of Ibadan. The area lies within the basement rock terrain of South Western Nigeria and bounded by longitudes 3o 51′ – 3o 53′E and latitudes 7o 22′ – 7o 24′N. The exploration was done using SYSCAL KID meter while a total of 10 VES with a...
Article
A study of the radioactivity in groundwater from Tanke-Ilorin, Nigeria, has been carried out. Ten water samples were analyzed by y-ray spectroscopy to determine the 226Ra and 228Ra concentrations. The activity concentration values range from 0.81 ± 0.08 to 7.4 ± 2.2 Bq/l for 226Ra and from 1.8 ± 0.3 to 5.6 ± 2.6 Bq/l for 228Ra. The derived Annual E...
Article
An estimate of Heat flows in the Northern part of the Sedimentary Nupe Basin, West of Central Nigeria has been made from the spectral analysis of aeromagnetic data. This is in view of increased efforts to explore for new and more energy locations in Nigeria. Airborne magnetometer survey maps covering an area bounded by latitudes 8°30' and 10°00' No...
Article
A 2D electrical resistivity survey has been carried out for water exploration at the MAGDAS Observatory, University of Ilorin. This is in view of the possibility that the observatory could gain international recognition and therefore the need to secure the area from acute water shortages for observers and researchers. The area lies within the basem...
Article
Full-text available
An estimate of Curie-point isotherm depths has been made in the northern part of the Nupe Basin, west of Central Nigeria, from the spectral analysis of aeromagnetic data. Curie-point, the temperature at which rocks lose their ferromagnetic properties, provides a link between thermal models and models based on the analysis of magnetic sources. The r...
Thesis
Full-text available
Large increases in energy cost during the past two decades have rapidly increased the search for and the development of nonfossil fuel and renewable alternative energy sources all over the world, of which geothermal resources is one of them. Magnetic surveying is an important part of geothermal exploration. In this study, total field magnetic inten...
Article
Full-text available
A study of the external background radiation in Offa industrial area of Kwara State is hereby reported. An in-situ measurement using two Digilert radiation monitors at five different stations were carried out. A mean exposure rate of 0.0132mR/hr, which represents 20% elevation from the standard background radiation, was obtained. This suggests the...
Article
An external background ionizing radiation study has been carried out within the Asa Dam Industrial Layout of Ilorin in Kwara State. The study was carried out in 5 stations within the industrial area using two Digilert Nuclear Radiation Monitors. The study has revealed that the external background ionizing radiation is averagely 0.0134 mR/hr with a...

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Archived project
Kraków, Poland | 28 November-2 December 2018 The 2nd International Conference on Sustainability, Human Geography and Environment 2018 (ICSHGE18) targets professors, scientists, engineers, scholarly students and representatives from top business and international organisations to exchange and share their experimentation, novel ideas and research results regarding all aspects of the Conference’s four themes: sustainability, human geography, environment and interdisciplinary societal studies. The format will have simultaneous dual-platform presentations, workshop sessions, an exhibition of poster presentations and two days of excursions and tours of southern Poland.