A Systematic Study of Topography Effect of ERT Based on 3-D Modeling and Inversion

Lu, Dawei; Zhou, Qiyou; Junejo, S. A.; Anlin, Xiao

doi:10.1007/s00024-014-1015-4

Cited by 15 publications

(5 citation statements)

References 33 publications

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“…Because the perturbation vector in equation () has the characteristics of being large near electrodes and gradually decreasing to zero farther from electrodes, the perturbation resulting from each event appears as a patching process, which is why this approach is called the patching method (Zhou, Shimada, and Sato ; Lu et al . ). Additionally, the inversion scheme can be easily implemented in other arrays such as a Wenner array and a dipole–dipole array, which will be examined next using synthetic data.…”

Section: Methodsmentioning

confidence: 97%

Multi‐geophysical approach for the better understanding and characterization of subsurface structures

Zhou

Dong

et al. 2015

Near Surface Geophysics

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Understanding and characterizing subsurface structures is challenging, especially when the objective is to investigate sites for nuclear waste disposal. This paper presents a multi‐geophysical approach for subsurface experimental investigations in which seismic data are used to improve electrical resistivity tomography quality. Different synthetic models ranging from simple to complex were created to quantitatively demonstrate the improvements enabled by the use of this strategy. Moreover, the scheme was tested at Beishan, a candidate site for the disposal of high‐level radioactive waste in northwestern China. The results show that the combination of geophysical data sources improves the interpretation of the subsurface over a single source. The root‐mean‐square level and runtime were found to rapidly decrease when using the proposed scheme.

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Section: Methodsmentioning

confidence: 97%

Multi‐geophysical approach for the better understanding and characterization of subsurface structures

Zhou

Dong

et al. 2015

Near Surface Geophysics

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“…By calculating the difference between the normal and back measurements, errors more significant than 15% were excluded from further calculation. Reasonable data were further calculated using the inversion method proposed by Lu et al [32,33] to obtain the soil resistivity value. However, the process will not be discussed here due to space limitations.…”

Section: High-density Electric Resistivity Tomography Methodsmentioning

confidence: 99%

Estimation Parameters of Soil Solute Transport Processes by Using the Electric Resistivity Method

Xia

Geng

et al. 2022

Processes

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Preferential solute transport is a common phenomenon in soil, and it is of great significance to accurately describe the mechanism of pollutant transport and water and soil environmental governance. However, the description of preferential solutes still relies on applying solute breakthrough curves for model parameters fitting. At present, most of the solute breakthrough curves are obtained indoors, and with some limitations. Therefore, this study established a method for securing solute breakthrough curves based on the electrical resistivity method. The research results show that the change in soil concentration during the tracer infiltration process can be captured by establishing the fitting relationship between soil resistivity and solute concentration. Then the solute breakthrough curve can be found. Through a time moment analysis, the difference between the breakthrough curve parameters obtained by the traditional method and the resistivity method is slight; the average error is less than 10%. On this basis, the sensitive response of the parameters of the “mobile–immobile” model to concentration was elucidated through different concentration tracer experiments, among which β and D are more sensitive, and w is less sensitive. The suitable tracer concentration range should be 50–120 mg/L. Therefore, the established method could obtain the breakthrough curves and describe the transport of preferential solutes at the field scale.

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“…Then, to take ac count of the ter rain mor phol ogy in the in ver sion, in for ma tion on the height of the elec trodes on the par tic u lar pro files was added to the datasets. Fail ure to take this el e ment into ac count may adversely in flu ence the in ver sion re sults (Fox et al, 1980;Loke, 2000;Lu et al, 2015). The same set of in ver sion pa ram e ters as shown in WoŸniak and Bania (2019a) has been ap plied in in version in this re search.…”

Section: Ert Field Data Processing and Inversionmentioning

confidence: 96%

Subsurface imaging of fluvial deposits of the Vistula River valley in Kraków (southern Poland) by 2D ERT survey

Bania

WOŹNIAK²

2022

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We de scribe the ap pli ca tion of 2D ERT (elec tri cal re sis tiv ity to mog ra phy) sur veys to in ves ti gate the spa tial com plex ity of fluvial de pos its of the Wis³a River val ley in the east ern part of Kraków (south ern Po land). All ERT sur vey lines were com pleted within the in dus tri ally in flu enced floodplain of the Wis³a River at two re search sites. Due to the trans for ma tion of the nat u ral state of the en vi ron ment through many years of in dus trial ac tiv ity of the ArcelorMittal Kraków plant, some of the geomorphological el e ments ana lysed have been ir re triev ably trans formed and hid den by anthropogenic ac cu mu la tions such as waste land fills and en gi neer ing struc tures. Hence, many years of soil con tam i na tion have changed the pri mary re sis tiv ity char ac ter is tics of the subsurface. For this pur pose, the mea sure ment ar ray ap plied com bines stan dard ar rays, i.e., Wenner-Schlumberger and Di pole-Di pole, which gave im proved re sults (higher res o lu tion) in com par i son to the stan dard sin gle ar ray. The data in ter pre ta tion method was sup ported by the cal cu la tion and vi su al iza tion of the ver ti cal and hor i zon tal gra di ents of the in ter preted re sis tiv ity within the re sis tiv ity sec tions. This ap proach al lowed ac cu rate de ter mi na tion of re sistiv ity bound aries on the ERT re sis tiv ity sec tions and thus helped lithological in ter pre ta tion of the flu vial de pos its in the research area. The re sis tiv ity of wa ter in a chan nel lo cated within one of the ana lysed ar eas has im pacted some of the re search re sults. Fur ther more, 2D ERT for ward mod el ing was im ple mented to gen er ate syn thetic datasets. The syn thetic data allowed in ves ti ga tion of the in flu ence of ground wa ter con tam i na tion on the re sis tiv ity dis tri bu tion within su per fi cial lay ers, and also tested the abil ity of the 2D ERT model to rec og nize the de tailed spa tial dis tri bu tion of palaeomeander (me an der scar) infills. All meth ods have pro vided new in for ma tion on the in dus tri ally in flu enced floodplain of the Wis³a River in Kraków.Key words: elec tri cal re sis tiv ity to mog ra phy (ERT), gra di ents of in ter preted re sis tiv ity, 2D ERT mod el ing, flu vial de pos its, Wis³a River val ley, south ern Po land.

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A Systematic Study of Topography Effect of ERT Based on 3-D Modeling and Inversion

Cited by 15 publications

References 33 publications

Multi‐geophysical approach for the better understanding and characterization of subsurface structures

Multi‐geophysical approach for the better understanding and characterization of subsurface structures

Estimation Parameters of Soil Solute Transport Processes by Using the Electric Resistivity Method

Subsurface imaging of fluvial deposits of the Vistula River valley in Kraków (southern Poland) by 2D ERT survey

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