Measurements of spectral induced polarization for environmental purposes

Weller, Andreas; Börner, F.

doi:10.1007/bf00766702

Cited by 66 publications

(30 citation statements)

References 8 publications

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“…Polarization of oxides and carbonates minerals such as calcite is related to the polarization of the electrical double layer (EDL) surrounding the particles under an external alternating current or electrical field (Chelidze & Gueguen 1999;Jougnot et al 2010;Revil & Florsch 2010). When a sinusoidal current at a range of frequencies is applied to the charged porous medium and the resulting difference of electrical potential is measured, complex conductivity is referred to as spectral induced 124 P. Leroy et al polarization (SIP) (Collet 1990;Weller & Borner 1996;Luo & Zhang 1998;Huisman et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Modeling the evolution of complex conductivity during calcite precipitation on glass beads

Leroy

Li²,

Jougnot

et al. 2017

Geophys. J. Int.

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S U M M A R YWhen pH and alkalinity increase, calcite frequently precipitates and hence modifies the petrophysical properties of porous media. The complex conductivity method can be used to directly monitor calcite precipitation in porous media because it is sensitive to the evolution of the mineralogy, pore structure and its connectivity. We have developed a mechanistic grain polarization model considering the electrochemical polarization of the Stern and diffuse layers surrounding calcite particles. Our complex conductivity model depends on the surface charge density of the Stern layer and on the electrical potential at the onset of the diffuse layer, which are computed using a basic Stern model of the calcite/water interface. The complex conductivity measurements of Wu et al. on a column packed with glass beads where calcite precipitation occurs are reproduced by our surface complexation and complex conductivity models. The evolution of the size and shape of calcite particles during the calcite precipitation experiment is estimated by our complex conductivity model. At the early stage of the calcite precipitation experiment, modelled particles sizes increase and calcite particles flatten with time because calcite crystals nucleate at the surface of glass beads and grow into larger calcite grains. At the later stage of the calcite precipitation experiment, modelled sizes and cementation exponents of calcite particles decrease with time because large calcite grains aggregate over multiple glass beads and only small calcite crystals polarize.

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Section: Introductionmentioning

confidence: 99%

Modeling the evolution of complex conductivity during calcite precipitation on glass beads

Leroy

Li²,

Jougnot

et al. 2017

Geophys. J. Int.

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“…Inroads have been made on the use of seismic data [Rubin et al, 1992] and ground-penetrating radar (GPR) [Beres and Haeni, 1991] to map hydraulic heterogeneity. Recently, measurements of induced polarization [Weller and Borner, 1996] and nuclear magnetic resonance (NMR) [Herron et al, 1999] have been shown to correlate with hydraulic conductivity. Nonetheless, none of these techniques has become widely accepted or used, and as a result, the problem of poorly resolved estimates of hydraulic heterogeneity persists to this day.…”

Section: Introductionmentioning

confidence: 99%

On the electrical‐hydraulic conductivity correlation in aquifers

Purvance¹,

Andričević²

2000

Water Resources Research

130

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Abstract. As a justification for the geoelectric characterization of the hydraulic conductivity field, this paper shows theoretically and empirically that electrical and hydraulic (eh) conductivities of aquifers can be correlated. The correlation, demonstrated at the microscale by a published network model of eh transport, arises from the fact that both eh conductivities are a function of connected pore volumes and connected pore surface areas. By considering skewed pore size distributions the microscale equations of eh conductivity scale up to power laws of porosity and specific surface area similar to Archie's law and the Kozeny equation. Also, a third, apparently unreported Archie-type power law relating electrical conductivity to specific surface area and the cation exchange phenomenon is predicted theoretically and confirmed experimentally. These equations imply a simple log-log linear correlation between eh conductivities that is either positive or negative. The positive correlation corresponds to a pore-volume-dominated electrical flow environment and the negative correlation corresponds to a pore-surface-dominated electrical flow environment. These relationships are supported by many published laboratory and field investigations cited in the paper.

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“…Laboratory investigations have shown that contaminants may cause changes of polarization effects in rocks (Olhoeft, 1985;Vanhala et al, 1992;Börner et al, 1993). Weller and Börner (1996) presented a method to determine the hydraulic properties of sediments using resistivity and polarization.…”

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confidence: 99%

Investigation of a Bronze Age plankway by spectral induced polarization

Schleifer

Weller

Schneider

et al. 2002

Archaeological Prospection

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The induced polarization (IP) method was developed originally for ore exploration. The transition from electronic to electrolytic conduction causes strong polarization effects in ores. However, other porous materials also exhibit polarization effects. They are caused by electrochemical processes at the internal interface between the pore fluid and the mineral grains. Although these effects are one to two orders smaller in size, modern IP equipment is able to resolve these phenomena. Spectral induced polarization (SIP) investigates the polarization effect in a wide frequency range. As a SIP measurement has an identical setup to conventional resistivity survey, a multichannel geoelectrical instrument (SIP-256) was developed that is able to measure both apparent resistivity and the polarization effect using a multi-electrode array. The Federsee bog near Lake Konstanz with its optimal preservation conditions is of international importance for archaeology. Pile dwelling settlements dating back to the eneolithicum have been revealed. Wood samples of a Bronze Age plankway (1500-1400 BC) were collected and investigated. The astonishing result of the laboratory measurements was that the samples showed a remarkable polarization effect in the classic frequency range of IP. Wood therefore can be regarded as a polarizable material. As a consequence a SIP survey was performed in order to investigate the plankway. The SIP survey was carried out in a frequency range from 1 to 60 Hz, where the maximum polarization effect in the laboratory was observed. Two profiles were measured, one parallel and one perpendicular to the plankway. In contrast to the result of the resistivity measurement, the plankway could be identified by weakly increased polarization effects.

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Measurements of spectral induced polarization for environmental purposes

Cited by 66 publications

References 8 publications

Modeling the evolution of complex conductivity during calcite precipitation on glass beads

Modeling the evolution of complex conductivity during calcite precipitation on glass beads

On the electrical‐hydraulic conductivity correlation in aquifers

Investigation of a Bronze Age plankway by spectral induced polarization

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