Magnetotelluric Modeling Techniques
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Some Magnetotelluric Modeling Techniques
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Author : William Victor Berge
language : en
Publisher:
Release Date : 1968
Some Magnetotelluric Modeling Techniques written by William Victor Berge and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Earth currents categories.
Magnetotelluric Modeling Techniques
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Author : Frederick William Patrick
language : en
Publisher:
Release Date : 1969
Magnetotelluric Modeling Techniques written by Frederick William Patrick and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Earth currents categories.
The process of finding one-dimensional Cagniard models to fit experimental magnetotelluric data in a least squares sense is investigated. A modification to the Newton-Raphson method for non-linear regression is developed. This method together with the gradient method is applied to data generated from exact models and is shown to be successful, provided certain conditions on the significance of the model parameters are met. A finite difference scheme for two-dimensional models is developed. The model is restricted to be a layered model in which one of the layers possesses a lateral inhomogeneity. Boundary conditions are applied in such a way as to allow eigenfunction expansions to be written in the homogeneous layers. This in turn allows proper boundary conditions to be applied at the air-earth interface and at infinity. For the scheme which is used, the finite difference equations are written only in the anomalous layer and are solved using a direct method. Results are presented for both the transverse electric and transverse magnetic polarizations for a typical model. The impedances generated from this model are used as experimental data to demonstrate the effect of fitting data generated from a two-dimensional earth with one-dimensional models. (Author).
Models And Methods Of Magnetotellurics
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Author : Mark N. Berdichevsky
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-07-15
Models And Methods Of Magnetotellurics written by Mark N. Berdichevsky and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-15 with Science categories.
Magnetotellurics is finding increasing applications for imaging electrically conductive structures below the Earth`s surface - in both industrial and academic research projects. In this book the authors provide a systematic approach to understanding the modern theory of ill-posed problems which is essential to making confident meaningful interpretations of magnetotelluric and magnetovariational soundings. The interpretation is conducted in an interactive way.
The Magnetotelluric Method
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Author : Alan D. Chave
language : en
Publisher: Cambridge University Press
Release Date : 2012-04-26
The Magnetotelluric Method written by Alan D. Chave and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-04-26 with Science categories.
A rigorous introduction to magnetotelluric imaging of Earth's electrical conductivity and structure, for researchers, advanced students and industrial practitioners.
Application Of The Rayleigh Fft Technique To Magnetotelluric Modeling
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Author : Russell Kei Kojima
language : en
Publisher:
Release Date : 1985
Application Of The Rayleigh Fft Technique To Magnetotelluric Modeling written by Russell Kei Kojima and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Magnetotelluric prospecting categories.
Magnetotelluric Modelling By A Contour Integral Technique
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Author : Ross Wilson Groom
language : en
Publisher:
Release Date : 1984
Magnetotelluric Modelling By A Contour Integral Technique written by Ross Wilson Groom and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with categories.
The Magnetotelluric Method
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Author : Alan Dana Chave
language : en
Publisher:
Release Date : 2014-05-14
The Magnetotelluric Method written by Alan Dana Chave and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-14 with Earth currents categories.
"The Magnetotelluric Method Theory and Practice 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. It is increasingly used in geological applications and the petroleum industry. This book forms the first comprehensive overview of magnetotellurics from the salient physics and its mathematical representation, to practical implementation in the field, data processing, modeling, and geological interpretation"--Provided by publisher.
One Dimensional Magnetotelluric Inversion Techniques
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Author : Charles E Laird (Jr)
language : en
Publisher:
Release Date : 1970
One Dimensional Magnetotelluric Inversion Techniques written by Charles E Laird (Jr) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.
The general nonlinear regression problem associated with the inversion of magnetotelluric data to a one-dimensional, horizontally homogeneous earth model is investigated. An automatic program that will invert most magnetotelluric data encountered by the author to a significant one-dimensional model without any interaction on the part of the computer operator is presented. A comparison is made of the Gauss-Newton method, a modified Newton-Raphson method, and the Nelder and Mead flexible simplex method for fitting data with a model in a least square sense. It is concluded that the modified Newton0Raphson method with a gradient starter is generally the most successful algorithm for inverting magnetotelluric data and also for use in the automatic program. Another study is made to determine what range of frequencies of the surface data are altered most by perturbations in the model at various depths. From this study and other work an algorithm is presented that generates a first guess model for a magnetotelluric inversion program. In addition, this perturbation technique is useful in determining what frequency range of data is necessary to define a particular geological profile. Many program and model insensitivities that occur during the inversion process are categorized and discussed, and corrections for each type of insensitive program termination are suggested for use in the automatic program. Several examples of the automatic program inversions of theoretical data with and without noise and actual field data are presented and discussed. (Author).
Practical Magnetotellurics
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Author : Fiona Simpson
language : en
Publisher: Cambridge University Press
Release Date : 2005-02-03
Practical Magnetotellurics written by Fiona Simpson and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-02-03 with Science categories.
Publisher Description
Magnetotellurics In The Context Of The Theory Of Ill Posed Problems
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Author : Mark Naumovich Berdichevskiĭ
language : en
Publisher: SEG Books
Release Date : 2002
Magnetotellurics In The Context Of The Theory Of Ill Posed Problems written by Mark Naumovich Berdichevskiĭ and has been published by SEG Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Science categories.
This volume serves as an introduction to modern magnetotellurics originating with the pioneering work of Tikhonov and Cagniard. It presents a comprehensive summary of theoretical and methodological aspects of magnetotellurics. It provides a bridge between textbooks on electrical prospecting and numerous papers on magnetotelluric methods scattered among various geophysical journals and collections. The book has been written in the terms of the theory of ill-posed problems and contains a special chapter encouraging readers to master the elements of this theory that defines the philosophy of the physical experiment. The book thus offers the connected and consistent account of the principles of magnetotellurics from that single viewpoint. The book also brings together developments from many sources and involves some little-known results developed in Russia in Tikhonov's magnetotellurics school. Of particular interest are concluding chapters of the book that demonstrate the potential of magnetotellurics in oil and gas surveys, including discovery of the Urengoy gas field in Western Siberia, one of the largest gas fields in the world. This potential also is revealed in studies of the earth's crust and upper mantle.