Electrical resistivity tomography, VES and magnetic surveys for dam site characterization, Wukro, Northern Ethiopia

Haile, Tigistu; Atsbaha, Solomun

doi:10.1016/j.jafrearsci.2014.03.023

Cited by 14 publications

(5 citation statements)

References 11 publications

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“…Geophysics has been traditionally employed in exploration for identification and delimitation of mineral deposits and has played an important role in reducing geological uncertainty in mining. Haile & Atsbaha [17] comment that geophysical techniques are routinely used as part of geological investigations to map subsurface geological structures. According to Frasheri et al [18], the most common geophysical methods employed in mineral exploration are electrical, electromagnetic, gravimetric, magnetic and seismic.…”

Section: Methodsmentioning

confidence: 99%

The role of geophysics in enhancing mine planning decision-making in small-scale mining

et al. 2020

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Small-scale mining usually operates under high geological uncertainty conditions. This turns mine planning into a complex and sometimes inaccurate task, resulting in low productivity and substantial variability in the quantity and quality of the mineral products. This research demonstrates how the application of a novel methodology that relies on traditional and low-cost geophysical methods can contribute to mine planning in small-scale mining. A combination of resistivity and induced polarization methods is applied to enhance mine planning decision-making in three small-scale mining operations. This approach allows for the acquisition of new data regarding local geological settings, supporting geological modelling and enhancing decision-making processes for mine planning in a timely and low-cost fashion. The results indicate time savings of up to 77% and cost reductions of up to 94% as compared with conventional methods, contributing to more effective mine planning and, ultimately, improving sustainability in small-scale mining.

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Section: Methodsmentioning

confidence: 99%

The role of geophysics in enhancing mine planning decision-making in small-scale mining

et al. 2020

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“…ERT has the advantages of low cost, high efficiency, and abundant information collection. As one of the important methods of shallow geophysical exploration, ERT has been widely used in environmental geological surveys [55][56][57][58], engineering geological surveys [59,60], water conservation and hydropower engineering [61,62], urban engineering, and archaeology [63,64]. The selection of comprehensive geophysical prospecting methods depends on the geological characteristics, exploration depth, and resolution of a study area [65].…”

Section: Electrical Resistivity Tomographymentioning

confidence: 99%

Application of combined electrical resistivity tomography and seismic reflection method to explore hidden active faults in Pingwu, Sichuan, China

Meng

Zhang

et al. 2020

Open Geosciences

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AbstractPingwu County, which is located at the northern end of the Longmenshan fault structural belt, has an active regional geological structure. For a long time, the Longmenshan fault tectonic belt has become intensely active with frequent earthquakes. According to the existing geological data, the Pingwu–Qingchuan fault passes through the urban area of Pingwu. However, because of the great changes in the original landform of Pingwu caused by the construction activities in this urban area, a precise judgment of the location of the Pingwu–Qingchuan fault according to the new landform characteristics is difficult. Here, the seismic reflection method, electrical resistivity tomography (ERT), and drilling method were used to determine the accurate location of the buried active faults in Pingwu County. The seismic reflection method and ERT are used to determine the location of faults, the thickness of overlying strata of the fault, and the basic characteristics of faults. The drilling data can be used to divide the bedrock lithology and confirm the geophysical results. The geological model of the faults can be constructed by 3D inversion of ERT, and the structural characteristics of the faults can be viewed intuitively. The results of this study can provide a basis for earthquake prevention and construction work in Pingwu. The finding also shows that seismic reflection method and ERT can effectively explore buried active faults in urban areas, where many sources of interferences may exist.

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“…The advantage of the new Euler deconvolution technique is that, it does not require the input of SI. There have been few publications in the literature concerning the application of Euler deconvolution in Engineering/ geotechnical characterization (Prezzi et al 2005;Adelusi et al 2013;Haile and Ayele 2014). Nordiana et al (2012) stated that the essence of applying geophysical methods in geotechnical investigation is to minimize cost and time.…”

Section: Field Application (Sebarang Jaya Parking Lot)mentioning

confidence: 99%

New approach of solving Euler deconvolution relation for the automatic interpretation of magnetic data

Usman¹,

Abdullah²,

Nawawi³

et al. 2018

Terr. Atmos. Ocean. Sci.

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The conventional Euler deconvolution has 5 unknown parameters to be solve which are the location of source (x 0 , y 0 , and z 0 ), the background field and the structural index (SI). Among these 5 unknowns, the SI is to be manually selected by the interpreter. The manual input of SI into the Euler equation makes the technique to be semiautomated. A new technique based on Euler deconvolution that estimate background, horizontal coordinate (x 0 and y 0 ), depth and structural index (SI) of gridded magnetic data is presented. The theoretical and field model study over magnetic sources demonstrates the ability of the method to solve for the source location and nature of the target, the technique does not depend on magnetic latitude. An integrated automated filter which is based on convolution window, SI deviation, regression error and analytic signal is prepared and used for selecting valid solution. Finally, the technique is applied to real magnetic data of Sebarang Jaya, the clustered depth solutions coincided with the high amplitude/values of analytic signal and these are the possible positions of the target being sought. The technique is fast means of magnetic data interpretation and easy to implement as it involves first order derivatives of the field.

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Electrical resistivity tomography, VES and magnetic surveys for dam site characterization, Wukro, Northern Ethiopia

Cited by 14 publications

References 11 publications

The role of geophysics in enhancing mine planning decision-making in small-scale mining

The role of geophysics in enhancing mine planning decision-making in small-scale mining

Application of combined electrical resistivity tomography and seismic reflection method to explore hidden active faults in Pingwu, Sichuan, China

New approach of solving Euler deconvolution relation for the automatic interpretation of magnetic data

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