Use of electric resistivity tomography (ERT) for detecting underground voids on highly anthropized urban construction sites

Ungureanu, Constantin; Priceputu, Adrian; Bugea, Adrian Liviu; Chirica, Anton

doi:10.1016/j.proeng.2017.11.148

Cited by 30 publications

(22 citation statements)

References 4 publications

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“…Nilai elektrik homogen dan isotropik yang akan menghasilkan hubungan diukur antara perbedaan potensial untuk pengaturan tertentu dan jarak elektroda. Salah satu metode geolistrik yang dapat dilakukan adalah dengan menggunakan metode geolistrik konvigurasi Electrical Resistivity Tomography (ERT) (Ungureanu et al, 2017). Electrical Resistivity Tomography (ERT) merupakan metode yang digunakan untuk menduga jenis dan susunan material permukaan bumi berdasarkan distribusi spasial nilai resistivitasnya (Lowrie & William, 2007) Electrical Resistivity Tomography (ERT) disebut juga dengan Sub Surface Imaging (Telford, Geldart, & Sheriff, 2004) atau Resistivity Profiling (Milsom, 2003).…”

Section: Gambar 1 Lokasi Pengukuran Geolistrik (Lintasan 250m)unclassified

Interpretasi Electrical Resistivity Tomography (ERT) untuk Pendugaan Air Tanah Dangkal pada Formasi Gunungapi Muda

Febriarta

Suswanti

Noviandaru

2020

JNTT

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Aquifers or groundwater saturated areas in the slope morphology of Merapi volcano are relatively thin due to massive rock outcrops above the surface. Because these massive igneous rocks dominate the local geological appearance, the groundwater potential on the upper foot slope is relatively lower than the lower one that has thicker aquifer materials (sand). This study was designed to investigate the thickness of potential groundwater and identify the aquifer materials by geoelectrical methods using the Electrical Resistivity Tomography (ERT) configuration. ERT has several advantages, including its ability to present multi-log lithology vertically and produce a more detailed surface appearance. In this study, rock resistivity values were measured with a survey line stretching across 250 m. The geoelectrical imaging produced actual values (potential values) of the rock resistivities through the matching curve and inversion techniques. Afterward, the actual resistivities were matched with the standard electrical resistivity of rocks and their respective hydrogeological characteristics, i.e., the capacity to store and transmit water. Interpretation on rock resistivities detected groundwater at a depth of 0.5-12 m in Manisrenggo. This shallow aquifer has an impermeable layer composed of igneous rocks, which are massive breccia, that lie in one layer of sand. According to the Groundwater Basin Map, these rock formations are part of the Karanganyar-Boyolali Groundwater Basin. The shallow aquifers and hydraulic gradient lead to the emergence of seeps or flushes on the soil surface.

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Section: Gambar 1 Lokasi Pengukuran Geolistrik (Lintasan 250m)unclassified

Interpretasi Electrical Resistivity Tomography (ERT) untuk Pendugaan Air Tanah Dangkal pada Formasi Gunungapi Muda

Febriarta

Suswanti

Noviandaru

2020

JNTT

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“…ERT is a non-destructive, non-invasive, portable and environmentally friendly technique which has very wide applications in engineering, environmental and subsurface geology (Metwaly and Alfouzan 2013;Petr et al 2017). ERT is the best method for the demarcation of underground water-saturated zones, finding underground cavities, mineral exploration, archaeological investigations, assessment of peat properties and evaluation of near-surface sediments (Metwaly and Alfouzan 2013;Araffa et al 2014;Smith et al 2014;Abd El-Gawad et al 2017;Kowalczyk et al 2017;Ungureanu et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Electrical resistivity imaging of active faults in palaeoseismology: case studies from Karachi Arc, southern Kirthar Fold Belt, Pakistan

Nabi

Liu

Gong

et al. 2020

NRIAG Journal of Astronomy and Geophysics

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Electric resistivity tomography (ERT) is applied across active concealed faults to confirm the subsurface manifestation and lateral extension of capable faults in Karachi Arc, southern Kirthar Fold Belt, Pakistan. During palaeoseismological investigations, active faults and movements along them are identified using electrical resistivity imaging and trenching. The electrical resistivity images present the general structure of the investigated area, with the possibility of tracking the fault in the subsurface. The verification of faults and comparison of ERT profiles with the excavated trench logs confirmed the success of ERT. The results of ERT and trenching in three major parts of Karachi Arc show: (i) the southern inner part of the arc was inactive in Late Quaternary time, where the Sona Fault did not experience any recent movement; (ii) Kirthar and Khud faults in the northwestern part of the study area are active but do not extend into the southern Karachi Arc; and (iii) the frontal part of Karachi Arc is characterised by Quaternary faulting of limited strike length with a moderate rate of seismic activity. Based on the Karachi Arc case studies, ERT is found to be a reliable geophysical technique for studying near-surface geological structures, subsurface lithological mapping and fault characterisation.

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“…The selected geophysical methods have wide‐ranging applications; they are used in geological, hydrological, environmental and engineering investigations, and lately, they have been playing a more and more important role in archeological research (Fasani, Bozzano, Cardarelli, & Cercato, 2013; Gołębiowski, Pasierb, Porzucek, & Łój, 2018; Leucci, Parise, Sammarco, & Scardozzi, 2016; Rizzo, Capozzoli, De Martino, & Grimaldi, 2019; Testone, Longo, Mameli, & Rovina, 2018; Tsokas et al, 2014). In the literature, there are also numerous works on the detection of anthropogenic underground objects and localization of cavities with the application of these methods (Azie, 2016; Bottari, Aringoli, Carluccio, Castellano, & Varazi, 2017; Cheng, Tao, Chen, & Binley, 2019; Fabregat et al, 2017; Gan, Han, Lan, Chen, & Zhang, 2017; Gołębiowski, Porzucek, & Pasierb, 2016; Kaufmann & Douchko, 2017; Wai‐Lok Lai, Derobert, & Annan, 2018; Martel, Castellazzi, Gloaguen, Trépanier, & Garfias, 2018; Negri et al, 2015; Panjamani, Rohit, Prabhakaran, & Vidyaranya, 2018; Pasierb, 2012; Ungureanu, Priceputu, Bugea, & Chirică, 2017; van Hoorde, Hermans, Dumont, & Nguyen, 2017). The GPR and ERT methods are the most commonly used geophysical methods to detect voids under the ground surface.…”

Section: Introductionmentioning

confidence: 99%

Not only the ‘Gold Train' – the ‘Underground Town' of Riese (Poland) – the ambiguity of interpretation ERT and GPR methods

Pasierb

Nawrocki²

2020

Archaeological Prospection

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This article presents the results of a geophysical survey conducted in the Sowie Mountains within the Walim commune (Poland) in order to verify the discovery of the 'Underground Town' of Riese. Project Riese was the biggest mining and construction project of Nazi Germany. The facility was designed as a convenient and secure location for a headquarters, an armaments factory, and warehouses for goods stolen during World War II. The discovery was made in 2015 with the application of the mysterious KS-700 apparatus, the same as was used to 'discover' the 'Gold Train', which is ground penetrating radar (GPR) according to the manufacturer. It was one of the reasons why the verification surveys of the underground sites and the KS-700 apparatus made use of the GPR method. The depth range of the GPR method was limited to 5 m due to the strong attenuation of electromagnetic waves. It was thus concluded that the underground structures detected by the 'discoverers' were probably a result of apparatus errors, in which near-surface reflections are received repeatedly and recorded as returning from a depth far greater than the actual object. Therefore, the electrical resistivity tomography (ERT) method proved to be conclusive. The three obtained characteristics and extremely high-resistivity anomalies indicated the existence of underground tunnels. A thorough analysis of the results and acquired data, as well as of the literature, has proven that it is impossible to interpret them unambiguously as data from the subsurface but as a result of the influence of the surrounding objects. At other sites where the KS-700 apparatus recorded numerous 'underground cavities', the ERT cross-sections did not yield a correlated image. Additionally, neither the analysis of the local geological structure with regard to the existence of an underground town nor the drilled boreholes confirmed the 'discoverer's' results. K E Y W O R D S 'Underground Town'-Riese, ambiguity of interpretation, archaeology, electrical resistivity tomography (ERT), geophysics, ground penetrating radar (GPR)

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Use of electric resistivity tomography (ERT) for detecting underground voids on highly anthropized urban construction sites

Cited by 30 publications

References 4 publications

Interpretasi Electrical Resistivity Tomography (ERT) untuk Pendugaan Air Tanah Dangkal pada Formasi Gunungapi Muda

Interpretasi Electrical Resistivity Tomography (ERT) untuk Pendugaan Air Tanah Dangkal pada Formasi Gunungapi Muda

Electrical resistivity imaging of active faults in palaeoseismology: case studies from Karachi Arc, southern Kirthar Fold Belt, Pakistan

Not only the ‘Gold Train' – the ‘Underground Town' of Riese (Poland) – the ambiguity of interpretation ERT and GPR methods

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