Thermal structure of the African continent based on magnetic data: Future geothermal renewable energy explorations in Africa

Determination of Conrad and Curie point depth relationship with the variations in lithospheric structure, geothermal gradient and heat flow beneath the central main Ethiopian rift

“…Our joint 2D magnetic and gravity model along the study area with the preferred profile ( Figure 15 ) provides a fairly fit between the calculated and observed magnetic and gravity anomalies with an error of 28.961 nT and 2.98 mGal respectively ( Figure 16 ). All existing literature states that the areas that have geothermal resources, tectonically, volcanically and seismically active regions are characterized by shallow CPD and crustal thickness (e.g., Tessema and Antoine, 2004 ; Woldetinsae, 2005 ; Maguire et al., 2006 ; Saibi et al., 2015 ; Elbarbary et al., 2022 ). This scenario is very well depicted in our 2D joint modelling.…”

“…Unlike the geothermal methods, magnetic methods are based on utilization of magnetic data to calculate the CPD on a regional scale ( Selim and Aboud, 2013 ). Multiple investigations (e.g., Espinosa-Cardeña and Campos-Enriquez, 2008 ; Obaje, 2009 ; Eletta and Udensi 2012 ; Salako 2012 ; Abdulsalam et al., 2013 ; Ikumbur et al., 2013 ; Igwesi and Umego 2013 ; Saibi et al., 2015 ; Bello et al., 2017 ; Mohammed et al., 2019 ; Abdullahi et al., 2019 ; Elbarbary et al., 2022 ) utilized aeromagnetic magnetic data elsewhere in order to determine the CPD on both a regional and local scale.…”

Understanding the crustal architecture beneath the Bangui magnetic anomaly and its interactions with central African tectonic megastructures based gravity and magnetic analysis

“…This limit represents the depth beyond which rocks lose their ferromagnetic or ferrimagnetic properties due to temperatures above their Curie point. An estimation of the Curie isothermal depths is one of the main steps allowing to approximate the thermal state of the crust (Quintero et al, 2019;Elbarbary et al, 2022). Knowledge of the Curie isothermal depth variations also provides information on the different geological discontinuities which may be due either to the regional variations in the mineralogical composition of rocks or the variations in the local or regional geothermal regime.…”

Visualization Analysis on the Current Status and Development Trend of Geothermal Research: Insights Into the Database of Web of Science

“…The thermal mechanisms of geothermal resources, as controlled by different fractures and fissures, have been analyzed (Ullah et al, 2022). Aeromagnetic data combined with gravity inversion have been used to search for insidious hot dry rock and anomalous geothermal zones (Elbarbary et al, 2022). Using hydrochemistry, the movement of fluids through the geothermal system has been studied (Wang et al, 2022).…”