magnetotellurics

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magnetotellurics

[mag‚ned·ō·tə′lür·iks]
(geophysics)
A geophysical exploration technique that measures natural electromagnetic fields to image subsurface electrical resistivity, providing information about the earth's interior composition and structure since naturally occurring rocks and minerals exhibit a broad range of electrical resistivities.
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References in periodicals archive ?
As a deep geophysical technique, the magnetotelluric (MT) method is being widely used for the assessment of geothermal fields in many regions and is also the most appropriate electromagnetic technique to electrically image the subsurface structures [20].
Sarafian knew that both the experimental petrology and the magnetotelluric results had to be correct.
It was done via high-resolution apparent density imaging of Bouguer gravity anomalies within the study region, combined with long-period magnetotelluric (LMT) sounding results.
The geometry of the subduction zone was studied by Lucke (2012) by means of a synoptic model which takes into account three-dimensional data (local earthquake seismic tomographies), two-dimensional cross sections (refraction and reflection seismic, magnetotellurics) and onedimensional data (receiver functions, earthquake hypocenters) to constrain a three-dimensional density model from gravity data interpretation.
To clarify the geological structure in an area of coal mining using the resistivity distribution, magnetotelluric (MT) and audio-magnetotelluric (AMT) geophysical prospecting methods are applied in deep underground surveying (Cagniard, 1953).
Tolstaya, "Minimum support nonlinear parameterization in the solution of a 3D magnetotelluric inverse problem," Inverse Problems, Vol.
By relating these laboratory measurements to magnetotelluric observations, which are sensitive to the presence of partial melts, it is possible to establish a direct relationship between the electrical conductance and the flow parameters associated with flow in this weak lower crustal layer (Fig.
First stage gravity surveys were followed by Controlled-source audio frequency magnetotelluric (CSAMT) surveys to further refine the firm's understanding of the geology and lithium brine potential for each property.
deGroot-Hedlin C, Constable S (1990) Occam inversion to generate smooth, 2-dimensional models from magnetotelluric data.
The geophysical surveys typically used Controlled Source Audio-frequency Magnetotelluric (CSAMT) techniques.
As per the contract, the vessel BOA Galatea will acquire both 3D electromagnetic (EM) and magnetotelluric (MT) data in the Red Sea over a three- month period.