Induced polarization (IP) is a geophysical imaging technique used to identify the electrical chargeability of subsurface materials, such as ore.[1][2]
The polarization effect was originally discovered by Conrad Schlumberger when measuring the resistivity of rock.[3]
The survey method is similar to electrical resistivity tomography (ERT), in that an electric current is transmitted into the subsurface through two electrodes, and voltage is monitored through two other electrodes.
Induced polarization is a geophysical method used extensively in mineral exploration and mining operations. Resistivity and IP methods are often applied on the ground surface using multiple four-electrode sites. In an IP survey (and when making resistivity measurements), capacitive properties of the subsurface materials are determined as well. As a result, IP surveys provide additional information about the spatial variation in lithology and grain-surface chemistry.
The IP survey can be made in time-domain and frequency-domain mode:
In the time-domain induced polarization method, the voltage response is observed as a function of time after the injected current is switched off or on. [4]
In the frequency-domain induced polarization mode, an alternating current is injected into the ground with variable frequencies. Voltage phase-shifts are measured to evaluate the impedance spectrum at different injection frequencies — this is commonly referred to as spectral IP.
The IP method is one of the most widely used techniques in mineral exploration and in the mining industry. Additionally, IP has applications in hydrogeophysical surveying, environmental investigations and geotechnical engineering projects.[5]
^Cite error: The named reference Bleil_1953 was invoked but never defined (see the help page).
^Cite error: The named reference Zonge_2005 was invoked but never defined (see the help page).
^Cite error: The named reference Allaud_1977 was invoked but never defined (see the help page).
^Cite error: The named reference Olsson_2015 was invoked but never defined (see the help page).
^Cite error: The named reference SSI_2018 was invoked but never defined (see the help page).
and 24 Related for: Induced polarization information
Inducedpolarization (IP) is a geophysical imaging technique used to identify the electrical chargeability of subsurface materials, such as ore. The polarization...
Spectral inducedpolarization (SIP), or complex resistivity (CR) and also complex conductivity (CC), is a geophysical survey technique and an extension...
In classical electromagnetism, polarization density (or electric polarization, or simply polarization) is the vector field that expresses the volumetric...
magnetization is the vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material. Accordingly, physicists...
In electrodynamics, elliptical polarization is the polarization of electromagnetic radiation such that the tip of the electric field vector describes an...
scavenging mannose receptor CD206. Further studies have shown that M2 polarization may be induced through different activation signals leading in fact to different...
group-induced attitude polarization. Though group polarization deals mainly with risk-involving decisions and/or opinions, discussion-induced shifts...
direct current method. A related geophysical method, inducedpolarization (or spectral inducedpolarization), measures the transient response and aims to determine...
CIDNP (chemically induced dynamic nuclear polarization), often pronounced like "kidnip", is a nuclear magnetic resonance (NMR) technique that is used to...
polarization is usually small compared to electronic polarization. This originates from permanent and induced dipoles aligning to an electric field. Their orientation...
2786–2797. doi:10.1016/j.visres.2006.02.007. PMID 16564066. Chirality-inducedpolarization effects in the cuticle of scarab beetles: 100 years after Michelson...
property of a material having a refractive index that depends on the polarization and propagation direction of light. These optically anisotropic materials...
}{3\varepsilon _{0}}}\,.} If we suppose the polarization of the dipoles was induced by an external field, the polarization field opposes the applied field and...
Political polarization (spelled polarisation in British English, African and Caribbean English, and New Zealand English) is the divergence of political...
In electrodynamics, circular polarization of an electromagnetic wave is a polarization state in which, at each point, the electromagnetic field of the...
psychology term Identity preserved, an agricultural designation Inducedpolarization, a geophysical imaging technique Intercept point, a measure in amplifiers...
electric field were applied in the y {\displaystyle y} -direction the inducedpolarization would be the same in magnitude but appear in the y {\displaystyle...
chemical-induced DNP, CIDNP), optical pumping and spin injection. DNP is considered one of several techniques for hyperpolarization. DNP can also be induced using...
charges that have been induced on it line up with the brushes next to disc A [X, X1]. The charges on B induce the opposite polarization of the A-brushes' shaft...
describes the phenomenon by the induction of a polarization around the charge carrier. The inducedpolarization will follow the charge carrier when it is moving...
directions and the polarisability is now a tensor. The total density of inducedpolarization is the product of the number density of molecules multiplied by the...
Concentration polarization is a term used in the scientific fields of electrochemistry and membrane science. In electrochemistry, concentration polarization denotes...
Polarization mode dispersion (PMD) is a form of modal dispersion where two different polarizations of light in a waveguide, which normally travel at the...
attracted to it and move toward it. The attraction occurs because of inducedpolarization of the atoms inside the pith ball. All matter consists of electrically...