Contribution of electrical resistivity tomography in the study of aquifer geometry and groundwater salinization of Eastern Haouz and upstream Tassaout domain, Morocco

Rochdane, Samia; Elgettafi, Mohammed; Mandour, Abdennabi El; Himi, Mahjoub; Casas, A.; Daafi, Youssef; Karroum, Morad; Chouikri, Ibtissam

doi:10.1007/s12665-022-10246-7

Cited by 11 publications

(3 citation statements)

References 20 publications

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“…The high-density resistivity method is actually a resistivity method based on the difference of electrical properties of underground media [54][55][56], which integrates the electric profiling and electric sounding methods [57]. Similar to the DC method, the direct current I is supplied through electrodes A, B to the earth, and the potential difference between the measuring electrodes M, N (ΔU MN ) is recorded, after which the apparent resistivity of the measuring point can be obtained using the formula ρ s = KðΔU MN /IÞ, where K is the coefficient of the device.…”

Section: High-density Resistivity Methodmentioning

confidence: 99%

Review and Challenges in the Geophysical Mapping of Coal Mine Water Structure

Chen

Zhang

et al. 2022

Geofluids

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Generally, the water-bearing structures of coal mines mainly include coal seam, roof, coal seam, floor, and goaf, while the main water-conducting structures include faults, collapsed columns, and collapsed goaf areas. The most commonly used methods for the detection of the above structures include the seismic method, high-density electrical method, controlled source audio-frequency magnetotelluric method, and transient electromagnetic method. Theoretically, the seismic methods have a higher resolution, which can be used to determine the targets’ geometry, but unable to determine whether the target is filled with water, while the electromagnetic methods are capable of this, although with lower resolution. Therefore, it is necessary to adopt the comprehensive geophysical prospecting in the actual field measurement of the coal mine water to guarantee the detection accuracy. Based on this, in the passage, first, we introduced the characteristics of the water-bearing and water-conducting structures and then analyzed the detection results of different methods by examples. Finally, we pointed out that, first, it is essential to develop the mine or airborne methods for the sake of convenience; and second, it is time that we adopt three-dimensional detection technology, multisource and multiresolution detection technology, and electromagnetic big data technology for high accuracy.

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Section: High-density Resistivity Methodmentioning

confidence: 99%

Review and Challenges in the Geophysical Mapping of Coal Mine Water Structure

Chen

Zhang

et al. 2022

Geofluids

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“…The Electrical Resistivity Tomography (ERT) method is a non-destructive tool for nearsurface investigation [20,21]. Indeed, this technique is increasingly used for both characterizing subsurface geological structures [22][23][24][25][26][27] and hydrogeological investigations [28][29][30][31][32][33]. The growing interest in the ERT method is due to the development of multi-electrode measurement devices that have facilitated field operations and new automated data acquisition and inversion algorithms.…”

Section: Ert Surveymentioning

confidence: 99%

New Insights from Geophysical, Hydrogeological and Borehole Data into the Deep Structure of the Louta Phosphatic Deposit (Gantour Basin, Morocco): Mining Implications

Charbaoui,

Kchikach,

Jaffal

et al. 2023

Geosciences

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The Gantour Phosphatic Basin (GPB) is formed by a sedimentary series of Maastrichtian to the Eocene age, which consists of alternating phosphate layers and sterile levels. This series outcrops in the northern part of the basin, where it is exploited in open-pit mines. The exploration methodology employed by the Office Chérifien des Phosphates (OCP) group to investigate the GPB is based on direct recognition with boreholes drilled on a 500 × 500 m grid. This research is concerned with the compilation and analysis of data collected during several drilling campaigns conducted on the central segment of the GPB, namely the Louta deposit. This research also includes acquiring, processing, and interpreting new geophysical and hydrogeological data. Its main objective is to provide a better understanding of the deep structure of the phosphatic series. Therefore, the present study was carried out according to a multidisciplinary approach that comprises three parts. (i) The first one involves geological modeling of the exploration borehole data using Datamine Studio RM software (version 1.4), developed by Datamine Corporate Ltd., (Bristol, United Kingdom). It results in establishing a series of geological cross-sections that display a detailed view of the deep structure of the phosphatic series and its lateral variations. (ii) The second part is related to the hydrogeological study, whose purpose was to elaborate on an accurate and updated piezometric map of the study area. The new map helps understand the groundwater flow in the Louta deposit. Furthermore, the superimposition of the piezometric level with the geological sections throws light on the flooded volume of phosphate in this deposit. (iii) The third part of the study focuses on implementing the Electrical Resistivity Tomography (ERT) method. The interpretation of the recorded geoelectrical data not only highlights the main features controlling the mode and the proportion of the phosphate series deepening under the Plio-Quaternary cover but also confirms the evolution of the overall structure of the studied area. The obtained 2D ERT models generally corroborate the cross-sections produced by geological modeling. They also correlate with the information provided by the hydrogeological study. Such information will help guide future hydrogeological and mining extraction planning in the studied area.

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“…The Haouz plain (8°4'W -7°5'W; 31°2N -31°8'N), located at Marrakech-Saő region (Figure 2.1), is a vast agricultural plain of the Tensift basin covering an area of 6000 km 2 , stretching approximately 150 kilometers from east to west. The topography is almost ŕat with slopes not exceeding 5%, the elevation varies from 0 m to the north to about 900 m at the foothills of the Atlas (Ait Hssaine (2019); Rochdane et al (2022)). Land use in the Haouz plain consists of a mosaic of various plant categories: uncultivated crops, farmed grasslands, and sporadic patches of forests (Figure 2.2), with separate buildings in the eastern and southern parts and around the city of Marrakech.…”

Section: The Haouz Plainmentioning

confidence: 99%

Modeling the surface-atmosphere coupling in the Moroccan semi-arid plains in the context of climate change

Arjdal¹,

Driouech²,

Vignon³

et al. 2022

Preprint

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Morocco as many semi-arid Mediterranean and north African countries is facing strong pressure on water resources exacerbated by climate change. Assessing the representation and variability of the Moroccan climate by using the climate models is of major importance to strengthen the reliability of future scenarios and anticipate the water cycle evolutions.The aim of this study is to evaluate and improve the representation of the surface-atmosphere coupling, and the boundary-layer dynamics over the Haouz plain by the IPSL-CM Earth System Model. The Haouz plain is one of the most important agricultural and touristic regions of Morocco. It is located in the Tensift watershed and limited with the Atlas mountains, and it has been equipped with a network of meteorological stations. We set a simulation configuration up with a model grid refined over the Haouz plain and with a nudging towards atmospheric reanalysis outside the plain, making it possible to concomitantly compare the model outputs with in-situ data.&#160;A first evaluation of the control simulation reveals an overall good agreement between the observed daily mean temperature and the simulated one despite some cold biases. Simulated near-surface relative humidity is generally low-biased (up to 20%) while precipitation is overestimated (up to 50% of observed daily precipitation). Those biases are further deciphered through a careful evaluation of the different terms of the surface energy and water budgets. Complementary analyses conditioned to the direction of the large scale flow also investigate how model&#8217;s performances over the plain depend on the representation of the orographic flow over the Atlas. This evaluation work is a preliminary and an important step to identify which and how LMDZ parameterizations have to be improved for semi-arid African regions.&#160;

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Contribution of electrical resistivity tomography in the study of aquifer geometry and groundwater salinization of Eastern Haouz and upstream Tassaout domain, Morocco

Cited by 11 publications

References 20 publications

Review and Challenges in the Geophysical Mapping of Coal Mine Water Structure

Review and Challenges in the Geophysical Mapping of Coal Mine Water Structure

New Insights from Geophysical, Hydrogeological and Borehole Data into the Deep Structure of the Louta Phosphatic Deposit (Gantour Basin, Morocco): Mining Implications

Modeling the surface-atmosphere coupling in the Moroccan semi-arid plains in the context of climate change

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