Spatial Mapping of Conductive Ground Water Contamination With Electromagnetic Induction

Weber, Dennis; Scholl, James F.; LaBrecque, Douglas; Walther, Eric G.; Evans, Roy B.

doi:10.1111/j.1745-6592.1984.tb00896.x

Cited by 7 publications

(4 citation statements)

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“…, 2008). To speed up the process, various studies have shown how non‐contact electromagnetic (EM) induction probes can be used to map the areal distribution of a leachate plume (Weber et al. , 1984; Woldt et al.…”

Section: Introductionmentioning

confidence: 99%

“…Use has been made of geophysical techniques, most commonly direct current (dc) resistivity techniques such as in Malaysia (Samsudin et al, 2006), USA (Zume et al, 2006), Turkey (Kaya et al, 2007) and Israel (Frid et al, 2008). To speed up the process, various studies have shown how non-contact electromagnetic (EM) induction probes can be used to map the areal distribution of a leachate plume (Weber et al, 1984;Woldt et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

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Detecting a leachate plume in an aeolian sand landscape using a DUALEM‐421 induction probe to measure electrical conductivity followed by inversion modelling

Triantafilis

Roe

Santos

2011

Soil Use and Management

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Solid waste poses a serious health risk when it is disposed of inadequately because water‐based solutions derived from the decomposition of solid waste products (leachate) can enter groundwater systems via plumes. To assess the public health risk and potential ecological impacts, we require knowledge on the pedological and hydrogeological settings in which waste is disposed. This is particularly the case in coarse textured highly permeable soil. To rapidly collect data, geophysical methods such as direct current (dc) resistivity techniques have been used. Moreover, non‐contact electromagnetic (EM) induction instruments have also been employed. The aim of this research was to demonstrate how the inversion using a 1‐dimensional inversion algorithm with lateral constraints of the apparent electrical conductivity (σa) measured in the horizontal coplanar (HCP) and perpendicular co‐planar arrays (PRP) of a DUALEM‐421 EM induction probe can be used to develop a two‐dimensional model of the true electrical conductivity (σ) within a Quaternary aeolian sand in the Tuggerah Soil Landscape southeast of Sydney in Australia. Our results from 2D models of σ accord with estimates of bulk electrical conductivity (σb) of a leachate plume and uncontaminated groundwater, the stratigraphy of the Tuggerah soil landscape unit and the depth of sand used to landscape the decommissioned landfill. Further research is needed to determine the origin of the plume and a quasi‐3D modelling approach is applicable.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Detecting a leachate plume in an aeolian sand landscape using a DUALEM‐421 induction probe to measure electrical conductivity followed by inversion modelling

Triantafilis

Roe

Santos

2011

Soil Use and Management

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“…EM methods the surface is not affected by changes in the location of applied downhole or between holes require nonconthe source electrode ii' the source electrode is relatively ductive (such as PVC) cased holes that could be located far away, Thus, the differencing of apparent ouLside the cover boundary. Electromagnetic induction resistivities measured on the surface from two source surveys are described by Benson (1984); McNeill positions at depth would be small in the absence o1'the (1980); Topp et al (1980);Weber et al (1984Weber et al ( , 1985, deep feature (concrete vault), However, because the Ground penetrating radar surveys are described by vault is relatively close to the buried electrodes, the Danicls (1989) and Benson (1984). Crosshole pattern of potential distribution changes significantly electronmgnetic surveys are described by Daily and for changes in source position.…”

Section: -36mentioning

confidence: 99%

Low-level radioactive waste disposal facility closure

Ferns¹,

Otis²,

Marts³

et al. 1990

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This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their Washington, DC 20555 employees, makes any warranty, express or implied, or assumes any legal liability or responsi-NRC FIN A6853 hility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

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“…In the near surface, a Geonics EM31 was used to map the areal distribution of a leachate plume in coastal sands (Nobes et al, 2000). Where depth to water table information was required, Weber et al (1984) employed a one‐dimensional linearized inverse approach, while Woldt et al (1998) resolved the depth of a leachate plume by calculating the depth where most of the EM34 signal contribution occurs. More recently, Kaya et al (2007) delineated soil and groundwater contamination using very low frequency EM methods.…”

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confidence: 99%

Inferring the Location of Preferential Flow Paths of a Leachate Plume by Using a DUALEM‐421 and a Quasi‐Three‐Dimensional Inversion Model

Triantafilis

Ribeiro

Page

et al. 2013

Vadose Zone Journal

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In urban landscapes, information is required to describe the heterogeneous nature of pedological and hydrological resources. This is particularly the case in areas previously used as municipal landfills. Increasingly, geophysical techniques such as electromagnetic (EM) induction are being used. Here we describe how a single‐frequency and multiple‐coil EM instrument can be used in conjunction with a one‐dimensional spatially constrained quasi‐three‐dimensional inversion algorithm to map electrical conductivity (σ). The algorithm is briefly described and then applied to soil apparent electrical conductivity (σa) data observed with a DUALEM‐421 and across a former municipal landfill at Astrolabe Park in Daceyville, Sydney. The results are presented as isosurface maps of σ. In general, the results compare favorably with existing knowledge and previous research results performed within a highly modified aeolian sand landscape. Specifically, the isosurface maps allow us to discern a gradient in, as well as identify contiguous corridors of, σ, which allow us to infer the likely location of leachate plume flow paths and their origin. The results demonstrate how EM instruments can provide rapid measurements of σa. In addition, coupled to a one‐dimensional spatially constrained quasi‐three‐dimensional inversion algorithm, the data enable robust estimates of σ, which may be useful for informing future natural resource management and research needs in a decommissioned municipal landfill at Astrolabe Park, which is impacted by a leachate plume.

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Spatial Mapping of Conductive Ground Water Contamination With Electromagnetic Induction

Cited by 7 publications

References 0 publications

Detecting a leachate plume in an aeolian sand landscape using a DUALEM‐421 induction probe to measure electrical conductivity followed by inversion modelling

Detecting a leachate plume in an aeolian sand landscape using a DUALEM‐421 induction probe to measure electrical conductivity followed by inversion modelling

Low-level radioactive waste disposal facility closure

Inferring the Location of Preferential Flow Paths of a Leachate Plume by Using a DUALEM‐421 and a Quasi‐Three‐Dimensional Inversion Model

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