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2021
Magnetotellurics (MT) is an electromagnetic, passive geophysical method that permits to explore the electrical resistivity distribution inside the Earth. It takes advantage of the naturally variable geomagnetic field at Earth's surface that induces secondary electromagnetic field in the diffusive limit.
A. Siniscalchi, G. Romano, S. Tripaldi
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Magnetotellurics (MT) is an electromagnetic, passive geophysical method that permits to explore the electrical resistivity distribution inside the Earth. It takes advantage of the naturally variable geomagnetic field at Earth's surface that induces secondary electromagnetic field in the diffusive limit.
A. Siniscalchi, G. Romano, S. Tripaldi
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Magnetotelluric exploration for hydrocarbons
Proceedings of the IEEE, 1989The magnetotelluric (MT) method utilizes naturally occurring low-frequency electromagnetic energy to determine the electrical resistivity of the Earth's subsurface. The resistivity distribution of the subsurface is then interpreted in terms of rock type and geologic structure.
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MTpy: A Python toolbox for magnetotellurics
Computers & Geosciences, 2014We present the software package MTpy that allows handling, processing, and imaging of magnetotelluric (MT) data sets. Written in Python, the code is open source, containing sub-packages and modules for various tasks within the standard MT data processing and handling scheme.
Lars Krieger, Jared R. Peacock
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2012
The magnetotelluric method is a technique for imaging the electrical conductivity and structure of the Earth, from the near surface down to the 410 km transition zone and beyond. This book forms the first comprehensive overview of magnetotellurics from the salient physics and its mathematical representation, to practical implementation in the field ...
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The magnetotelluric method is a technique for imaging the electrical conductivity and structure of the Earth, from the near surface down to the 410 km transition zone and beyond. This book forms the first comprehensive overview of magnetotellurics from the salient physics and its mathematical representation, to practical implementation in the field ...
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Random scattering in magnetotellurics
Geophysics, 2001Abstract Typical well logs show substantial variations of formation electrical resistivity over small spatial scales, down to the resolution of the logging tool. Using a plane stratified earth model, we examine the effects of this fine-scale microstructure on scattering of the naturally occurring electromagnetic (EM) waves used in ...
Benjamin S. White +2 more
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Directional noise cancelling in magnetotellurics
55th EAEG Meeting, 1993In Magnetotelluric (MT) data processing, poor signal-to-noire ratio usually biaces the impedance tensor Z elements estimates. Strong electromagnetic (EM) noise may thus render the MT method impracticable in industrial areas. Noise due to periodic sources (i.e. power line harmonies) is easily removed by analog filtering in the field; but non-periodic EM
Spagnolini, U., Santarato, G.
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Magnetotelluric measurements in Antarctica
Physics of the Earth and Planetary Interiors, 1990During austral summer 1984–1985 magnetotelluric measurements were carried out in North Victoria Land, Antarctica. The magnetic field was measured by a three-component fluxgate magnetometer. Copper screens (50 cm × 50 cm) were used as electrodes for recording the electric field, connected to a two channel electrograph with an input impedance of 1012 ω ...
M. Beblo, V. Liebig
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An Interpretive Analysis of Magnetotelluric Data
Exploration Geophysics, 1984Abstract A simple analysis to determine the dimensionality of magnetotelluric resistivity variations, to separate the near-surface resistivity variation from the variations at depth, and to find the relative resistivity variations with depth is described.
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Journal of Geophysical Research: Solid Earth, 1987
The study of the electrical conductivity structure of the lower crust and the upper mantle and midmantle promises to place important constraints on the thermobaric and compositional state of the earth's interior. Such work, particularly for depths above approximately 400 km, is best attempted by magnetotelluric sounding, an effort frustrated by the ...
Adam Schultz, John Booker, Jim Larsen
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The study of the electrical conductivity structure of the lower crust and the upper mantle and midmantle promises to place important constraints on the thermobaric and compositional state of the earth's interior. Such work, particularly for depths above approximately 400 km, is best attempted by magnetotelluric sounding, an effort frustrated by the ...
Adam Schultz, John Booker, Jim Larsen
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The magnetotelluric inverse problem
Geophysical Surveys, 1983The magnetotelluric inverse problem is reviewed, addressing the following mathematical questions: (a)Existence of solutions: A satisfactory theory is now available to determine whether or not a given finite collection of response data is consistent with any one-dimensional conductivity profile. (b)Uniqueness: With practical data, consisting of a finite
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