Mapping of landfills using time‐domain spectral induced polarization data: the Eskelund case study

Gazoty, A.; Fiandaca, Gianluca; Pedersen, Jesper; Auken, Esben; Christiansen, Anders Vest

doi:10.3997/1873-0604.2012046

Cited by 77 publications

(42 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pelton et al, 1978;Luo and Zhang, 1998), it is today currently used for engineering and environmental studies, mapping of polluted area and for detecting organic contaminated zones (Vanhala et al, 1992;Slater and Lesmes, 2002;Gazoty et al, 2012). In addition, it is used in hydro-geophysical application to calculate the hydraulic conductivity of subsurface formation (Binley et al, 2005;Hördt et al, 2007;Revil and Florsch, 2010).…”

Section: Introductionmentioning

confidence: 99%

Assessing the high frequency behavior of non-polarizable electrodes for spectral induced polarization measurements

Abdulsamad

Florsch

Schmutz

et al. 2016

Journal of Applied Geophysics

View full text Add to dashboard Cite

During the last decades, the usage of spectral induced polarization (SIP) measurements in hydrogeology and detecting environmental problems has been extensively increased. However, the physical mechanisms which are responsible for the induced polarization response over the usual frequency range (typically 1 mHz to 10-20 kHz) require better understanding. The phase shift observed at high frequencies is sometimes attributed to the so-called Maxwell-Wagner polarization which takes place when charges cross an interface. However, SIP measurements of tap water show a phase shift at frequencies higher than 1 kHz, where no Maxwell-Wagner polarization may occur. In this paper, we enlighten the possible origin of this phase shift and deduce its likely relationship with the types of the measuring electrodes. SIP Laboratory measurements of tap water using different types of measuring electrodes (polarizable and non-polarizable electrodes) are carried out to detect the origin of the phase shift at high frequencies and the influence of the measuring electrodes types on the observed complex resistivity. Sodium chloride is used to change the conductivity of the medium in order to quantify the solution conductivity role. The results of these measurements are clearly showing the impact of the measuring electrodes type on the measured phase spectrum while the influence on the amplitude spectrum is negligible. The phenomenon appearing on the phase spectrum at high frequency (N 1 kHz) whatever the electrode type is, the phase shows an increase compared to the theoretical response, and the discrepancy (at least in absolute value) increases with frequency, but it is less severe when medium conductivity is larger. Additionally, the frequency corner is shifted upward in frequency. The dependence of this phenomenon on the conductivity and the measuring electrodes type (electrode-electrolyte interface) seems to be due to some dielectric effects (as an electrical double layer of small relaxation time formed at the electrodes interface). Therefore, this dielectric response should be taken into account at high frequency to better analytically separate the medium own response from that linked to the measuring electrodes used. We modeled this effect by adding a capacitance connected in parallel with the traditional equivalent electric circuit used to describe the dielectric response of medium.

show abstract

Section: Introductionmentioning

confidence: 99%

Assessing the high frequency behavior of non-polarizable electrodes for spectral induced polarization measurements

Abdulsamad

Florsch

Schmutz

et al. 2016

Journal of Applied Geophysics

View full text Add to dashboard Cite

show abstract

“…Induced polarization is an extension to the classical direct current (DC) resistivity method and has become increasingly popular for hydrogeologic (Binley et al, 2005;Slater et al, 2010) and environmental applications (Holland et al, 2010), for instance, to estimate the low hydraulic conductivity of clayey materials acting as permeability barriers in landfills or in radioactive waste repositories (Weller and Börner, 1996;Lesmes and Friedman, 2005;Jougnot et al, 2010;Gazoty et al, 2012;Revil et al, 2013aRevil et al, , 2013b.…”

Section: Introductionmentioning

confidence: 99%

Spectral induced polarization of clay-sand mixtures: Experiments and modeling

et al. 2014

View full text Add to dashboard Cite

International audienceSpectral induced polarization or complex conductivity is a promising electric method in hydrogeophysics because of its sensitivity to water saturation, permeability, and particle size distribution (PSD). However, the physical and chemical mechanisms that generate the low-frequency complex conductivity of clays are still debated. To explain these mechanisms, the complex conductivity of kaolinite, smectite, and clay-sand mixtures was measured in the frequency range 1.4 mHz-12 kHz with various clay contents (100%, 20%, 5%, and 1% in volume of the clay-sand mixture) and salinities (distilled water, 0.1 g L-1, 1 g L-1, and 10 g L-1 of NaCl in solution). The results indicated the strong impact of the cation exchange capacity of smectite upon the complex conductivity of the material. The quadrature conductivity increased steadily with the clay content and was fairly independent of the pore fluid salinity. A mechanistic induced polarization model was also developed. It combined a Donnan equilibrium model of the surface electrochemical properties of clays and sand, a conduction model of the Stern and diffuse layers, a polarization model of the Stern layer, and a macroscopic conductivity model based on the differential effective medium theory. It also included the effect of the PSD. Our complex conductivity model predicted very well the experimental data, except for very low frequencies (<0.1 Hz) at which membrane polarization may dominate the observed respons

show abstract

“…A secondary electrical field is generated and measured typically at two potential (voltage) electrodes M and N (or a set of potential electrodes). Timedomain induced polarization was initially developed for mining applications, and it is currently used for many other problems such as petrological imaging (Slater and Lesmes, 2002;Kemna et al, 2004) and landfill characterization (Dahlin et al, 2002;Gazoty et al, 2012). The Cole-Cole model is a simple parametric representation of the complex conductivity of porous media Macnae, 2015).…”

Section: Introductionmentioning

confidence: 99%

Induced polarization response of porous media with metallic particles — Part 3: A new approach to time-domain induced polarization tomography

Mao

Revil

2016

GEOPHYSICS

View full text Add to dashboard Cite

The secondary voltage associated with time-domain induced polarization data of disseminated metallic particles (such as pyrite and magnetite) in a porous material can be treated as a transient self-potential problem. This self-potential field is associated with the generation of a secondary-source current density. This source current density is proportional to the gradient of the chemical potentials of the p-and n-charge carriers in the metallic particles or ionic charge carriers in the pore water including in the electrical double layer coating the surface of the metallic grains. This new way to treat the secondary voltages offers two advantages with respect to the classical approach. The first is a gain in terms of acquisition time. Indeed, the target can be illuminated with a few primary current sources, all the other electrodes being used simultaneously to record the secondary voltage distribution. The second advantage is with respect to the inversion of the obtained data. Indeed, the secondary (source) current is linearly related to the secondary voltage. Therefore, the inverse problem of inverting the secondary voltages is linear with respect to the source current density, and the inversion can be done in a single iteration. Several iterations are, however, required to compact the source current density distribution, still obtaining a tomogram much faster than inverting the apparent chargeability data using the classical Gauss-Newton approach. We have performed a sandbox experiment with pyrite grains locally mixed to sand at a specific location in the sandbox to demonstrate these new concepts. A method initially developed for self-potential tomography is applied to the inversion of the secondary voltages in terms of source current distribution. The final result compares favorably with the classical inversion of the time-domain induced polarization data in terms of chargeability, but it is much faster to perform.

show abstract

Mapping of landfills using time‐domain spectral induced polarization data: the Eskelund case study

Cited by 77 publications

References 52 publications

Assessing the high frequency behavior of non-polarizable electrodes for spectral induced polarization measurements

Assessing the high frequency behavior of non-polarizable electrodes for spectral induced polarization measurements

Spectral induced polarization of clay-sand mixtures: Experiments and modeling

Induced polarization response of porous media with metallic particles — Part 3: A new approach to time-domain induced polarization tomography

Contact Info

Product

Resources

About