18. Indication of Groundwater Contamination with the Induced-Polarization (IP) Method

Draskovits, P.; Vero, L.

doi:10.1190/1.9781560801719.ch18

Cited by 5 publications

(3 citation statements)

References 6 publications

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“…This increase in resistivity was shown to occur at the surface of the saturated zone in case of a hydrocarbon spill (Benson et al, 1997) as well as in controlled tank experiments with hydrocarbon contaminants (Schneider and Greenhouse, 1992;DeRyck et al, 1993;Schneider et al, 1993). Several researchers used the induced polarization (IP) method to measure the chargeability (Olhoeft, 1985;Vanhala et al, 1992;Aristodemu and Thomas-Betts, 2000;Draskovits and Vero, 2005). Olhoeft (1985), for instance, found layer resistivities to be higher but also lower than background values depending on the type of organic compound.…”

Section: Introductionmentioning

confidence: 95%

“…Although these water samples provide a good and generally accurate inventory of contamination, monitoring wells are invasive, can be misplaced and may not intercept the contaminated zone and, most notably, they yield only point information. Conversely, geophysical methods, such as geoelectrics, electromagnetic methods, very low frequency (VLF), and induced polarization (IP) are non-invasive and can often provide information over larger areas (Frohlich et al, 1994;Dahlin, 1996;Aristodemu and Thomas-Betts, 2000;Draskovits and Vero, 2005). These are reasons why geophysical methods can complement and partially substitute for monitoring well based site investigations.…”

Section: Introductionmentioning

confidence: 96%

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Investigating changes of electrical characteristics of the saturated zone affected by hazardous organic waste

Frohlich¹,

Barosh²,

Boving

2008

Journal of Applied Geophysics

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 96%

Investigating changes of electrical characteristics of the saturated zone affected by hazardous organic waste

Frohlich¹,

Barosh²,

Boving

2008

Journal of Applied Geophysics

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“…A amplitude desta curva de descarga determina a magnitude da polarização contida no meio geológico onde o método foi utilizado. Esta curva pode ser analisada em sua totalidade ou em intervalos de tempo (figura 4) (DRASKOVITS & LASZLO, 2005;SANTOS, 2012). Para aquisição de dados de eletrorresistividade e polarização elétrica induzida em campo, assim como outros dados Geoelétricos, utiliza-se aparelho conhecido como Resistivímetro, (figura 5-II).…”

Section: Eletrorresistividade (Er) E Polarização Induzida (Ip)unclassified

Geotechnologies and Their Approaches in Geomorphological Studies: Challenges and Possibilities Beyond Geographical Information Systems (Gis)

Filho

Lämmle

Moreira³

2020

WMD

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O conceito de Geotecnologia se consolidou associado a plataformas SIG’s, softwares de geoprocessamento e/ou processamento digital de imagens. Com o aperfeiçoamento e surgimento de novas técnicas nas últimas décadas devido a constantes avanços tecnológicos, essa limitação conceitual deve ser ampliada, compreendendo geotecnologias como o conjunto de técnicas utilizadas para obtenção de dados em determinado local geográfico, com o objetivo de processar e analisá-los em função de uma hipótese proposta. O objetivo do presente trabalho é abordar as diferentes possibilidades de uso das mesmas a partir de alguns exemplos, além de fomentar a abordagem das mesmas no âmbito da geomorfologia brasileira. O procedimento metodológico ocorreu em duas etapas, sendo a primeira revisão de literatura sobre exemplos de técnicas que podem ser consideradas geotecnologias; e a segunda, análise e quantificação de publicações em anais dos últimos 10 anos do Simpósio Nacional de Geomorfologia (SINAGEO), obtendo, assim, panorama a partir da maior base da dados de trabalhos na temática realizados no Brasil. Ressalta-se que o pesquisador deve considerar a escala de análise adotada para utilizar as Geotecnologias, uma vez que a utilização ou correlação equivocada pode comprometer os resultados e até invalidá-los. Este parece ser o caminho a seguir, sendo a Geografia, Geologia e Geomorfologia brasileira parte desse movimento, contribuindo para o avanço da ciência.

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A survey of current trends in near-surface electrical and electromagnetic methods

et al. 2006

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Electrical and electromagnetic ͑E&EM͒ methods for nearsurface investigations have undergone rapid improvements over the past few decades. Besides the traditional applications in groundwater investigations, natural-resource exploration, and geological mapping, a number of new applications have appeared. These include hazardous-waste characterization studies, precision-agriculture applications, archeological surveys, and geotechnical investigations. The inclusion of microprocessors in survey instruments, development of new interpretation algorithms, and easy access to powerful computers have supported innovation throughout the geophysical community and the E&EM community is no exception. Most notable are development of continuous-measurement systems that generate large, dense data sets efficiently. These have contributed significantly to the usefulness of E&EM methods by allowing measurements over wide areas without sacrificing lateral resolution. The availability of these luxuriant data sets in turn spurred development of interpretation algorithms, including: Laterally constrained 1D inversion as well as innovative 2D-and 3D-inversion methods. Taken together, these developments can be expected to improve the resolution and usefulness of E&EM methods and permit them to be applied economically. The trend is clearly toward dense surveying over larger areas, followed by highly automated, post-acquisition processing and interpretation to provide improved resolution of the shallow subsurface in a cost-effective manner.

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18. Indication of Groundwater Contamination with the Induced-Polarization (IP) Method

Cited by 5 publications

References 6 publications

Investigating changes of electrical characteristics of the saturated zone affected by hazardous organic waste

Investigating changes of electrical characteristics of the saturated zone affected by hazardous organic waste

Geotechnologies and Their Approaches in Geomorphological Studies: Challenges and Possibilities Beyond Geographical Information Systems (Gis)

A survey of current trends in near-surface electrical and electromagnetic methods

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