Disseminated ores in porous or fractured media can be polarized under the application of an
external low-frequency electrical field. This polarization is characterized by a dimensionless …

Resistivity and induced polarization methods are used for a wide range of near-surface
applications, including hydrogeology, civil engineering and archaeology, as well as …

The material properties of earth materials often change after the material has been
perturbed (slow dynamics). For example, the seismic velocity of subsurface materials …

A model combining low‐frequency complex conductivity and high‐frequency permittivity is
developed in the frequency range from 1 mHz to 1 GHz. The low‐frequency conductivity …

The surface conductivity of porous rocks has two contributions: the first is associated with the
diffuse layer coating the grains and is frequency-independent as long as the diffuse layer is …

Low-frequency geoelectrical methods include mainly self-potential, resistivity, and induced
polarization techniques, which have potential in many environmental and hydrogeological …

I developed a new model named POLARIS describing the complex conductivity of (pyrite‐
free) shaly poorly sorted sands. This model is based on the solution given by the effective …

The low-frequency conductivity response of water-saturated packs of glass beads reflects a
combination of two processes. One process corresponds to the polarization of the …

Two different equations, both of which are often called 'the Cole–Cole equation', are widely
used to fit experimental Spectral Induced Polarization data. The data are compared on the …

Best fitting of induced-polarization (IP) spectra by different models of Cole-Cole type
evidences discrepancies in the resulting model parameters. The time constant determined …