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Author : Alexander A. Kaufman,George Vernon Keller
Publisher : Elsevier Publishing Company
Page : 716 pages
File Size : 50,6 Mb
Release : 1983
Category : Electromagnetic fields
ISBN : UCAL:B4118514
Author : Alex A. Kaufman,Dimitry Alekseev,Michael Oristaglio
Publisher : Newnes
Page : 794 pages
File Size : 51,7 Mb
Release : 2014-06-27
Category : Science
ISBN : 9780444538307
Principles of Electromagnetic Methods in Surface Geophysics contains information about the theory of electromagnetic fields in a conducting media. It describes the theoretical and physical principles of the main geophysical methods using electromagnetic fields, including frequency and transient soundings, electromagnetic profiling, and magnetotelluric soundings. Special attention is paid to models and signal processing methods used in modern exploration geophysics for groundwater, mineral and hydrocarbon exploration. Offers an integrated approach to the description of electromagnetic geophysical fields used for surface geophysical surveys Provides a clear introduction to the physical background of electromagnetic methods and their application Rounds off the treatment of the main geophysical methods: gravity, magnetic seismic, electric and electromagnetic methods
Author : Alexander A. Kaufman,P. Hoekstra
Publisher : Elsevier Science & Technology
Page : 560 pages
File Size : 52,5 Mb
Release : 2001
Category : Science
ISBN : UCSD:31822029512290
Providing the latest developments in the application of electromagnetic methods, this title is a revised edition of the book "Frequency and Transient Soundings" by A.A. Kaufman and G.V. Keller published in 1983.In this volume the physical principles, theory and interpretation of electromagnetic soundings and profiling are developed and explained. The authors systematically derive the relationships between components of electromagnetic fields measured, transmitter-receiver separations and frequency spectrum on the one hand, and parameters of geoelectric sections on the other hand.In addition you will find case histories illustrating the applications of modern instruments for electromagnetic soundings and profiling in agricultural and geotechnical engineering, environmental site assessments and ground water investigations.
Author : Misac N. Nabighian
Publisher : SEG Books
Page : 989 pages
File Size : 43,8 Mb
Release : 1988
Category : Electromagnetic fields
ISBN : 9781560800224
As a slag heap, the result of strip mining, creeps closer to his house in the Ohio hills, fifteen-year-old M. C. is torn between trying to get his family away and fighting for the home they love.
Author : Michael S. Zhdanov
Publisher : Elsevier
Page : 804 pages
File Size : 54,6 Mb
Release : 2017-10-27
Category : Science
ISBN : 9780444638915
Foundations of Geophysical Electromagnetic Theory and Methods, Second Edition, builds on the strength of the first edition to offer a systematic exposition of geophysical electromagnetic theory and methods. This new edition highlights progress made over the last decade, with a special focus on recent advances in marine and airborne electromagnetic methods. Also included are recent case histories on practical applications in tectonic studies, mineral exploration, environmental studies and off-shore hydrocarbon exploration. The book is ideal for geoscientists working in all areas of geophysics, including exploration geophysics and applied physics, as well as graduate students and researchers working in the field of electromagnetic theory and methods. Presents theoretical and methodological foundations of geophysical field theory Synthesizes fundamental theory and the most recent achievements of electromagnetic (EM) geophysical methods in the framework of a unified systematic exposition Offers a unique breadth and completeness in providing a general picture of the current state-of-the-art in EM geophysical technology Discusses practical aspects of EM exploration for mineral and energy resources
Author : L. L. Vanyan
Publisher : Springer Science & Business Media
Page : 317 pages
File Size : 48,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9781468406702
10.------------------------, 10.------------------------. N ::IE ~ w ~ '" "'0.1 \~ 0 M z SIDE VIEW PLAN VIEW 0.01 LI --'---'---LLL-'---LLLlI ~-L---"---LLL..ll..L.LJ'-':';;' 0.01 1 100 10 100 fr Fig. 1. The behavior of the magnetic and electric fields from a vertical magnetic dipole source at the surface of the earth (after Wait [1951,1955]). earth, the experimental curve so plotted should have the same shape as a portion of the ap propriate theoretical curve, but with the ordinates and abscissas shifted by an amount dependent on the resistivity. The conductivity can be determined from the amount of shift between the field data and the theoretical curve. A detailed description of the curve matching procedure is found in a text by Keller and Frischknecht (1966). The curve matching procedure, though used, has several disadvantages. Measurements must be made over a diagnostic portion of the theoretical curve, one in which there is some curvature, so that the amount of shift required to make a match can be determined uniquely. This means that the approximate conductivity of the earth must be known when measurements are made. Secondly, determination of a single value of conductivity requires measurements made over a wide range of frequencies. This would appear to be wasteful of data, inasmuch as the equations indicate that a single measurement at a single frequency should be enough to de termine conductivity.
Author : Viacheslav V. Spichak
Publisher : Elsevier
Page : 482 pages
File Size : 45,5 Mb
Release : 2015-07-02
Category : Science
ISBN : 9780444635570
Electromagnetic Sounding of the Earth's Interior 2nd edition provides a comprehensive up-to-date collection of contributions, covering methodological, computational and practical aspects of Electromagnetic sounding of the Earth by different techniques at global, regional and local scales. Moreover, it contains new developments such as the concept of self-consistent tasks of geophysics and , 3-D interpretation of the TEM sounding which, so far, have not all been covered by one book. Electromagnetic Sounding of the Earth's Interior 2nd edition consists of three parts: I- EM sounding methods, II- Forward modelling and inversion techniques, and III - Data processing, analysis, modelling and interpretation. The new edition includes brand new chapters on Pulse and frequency electromagnetic sounding for hydrocarbon offshore exploration. Additionally all other chapters have been extensively updated to include new developments. Presents recently developed methodological findings of the earth’s study, including seismoelectrical and renewed magnetovariational approaches Provides methodological guidelines for Electromagnetic data interpretation in various geological environments Contains a balanced set of lectures covering all aspects of Electromagnetic sounding at global, regional and local levels along with case studies, highlighting the practical importance of electromagnetic data Updates current findings in the field, in particular MT, magnetovariational and seismo-electrical methods and the practice of 3D interpretations
Author : Jerry Brown,M. C. Metz,Pieter Hoekstra
Publisher : Unknown
Page : 126 pages
File Size : 46,9 Mb
Release : 1985
Category : Frozen ground
ISBN : MINN:31951002978687Y
Author : Cold Regions Research and Engineering Laboratory (U.S.)
Publisher : Unknown
Page : 126 pages
File Size : 42,9 Mb
Release : 1985
Category : Arctic regions
ISBN : MINN:31951000735472G
Author : P. Vallabh Sharma
Publisher : Cambridge University Press
Page : 496 pages
File Size : 42,9 Mb
Release : 1997-11-20
Category : Science
ISBN : 0521576326
This advanced undergraduate textbook comprehensively describes principal geophysical surveying techniques for environmental and engineering problems.
Author : Geological Survey (U.S.)
Publisher : Unknown
Page : 546 pages
File Size : 45,5 Mb
Release : 1948
Category : Geology
ISBN : UCBK:C033791787
Author : Anonim
Publisher : Unknown
Page : 544 pages
File Size : 53,8 Mb
Release : 1986
Category : Geology
ISBN : STANFORD:36105006313634
Author : Michael S Zhdanov
Publisher : Elsevier
Page : 635 pages
File Size : 52,8 Mb
Release : 2002-04-24
Category : Science
ISBN : 9780080532509
This book presents state-of-the-art geophysical inverse theory developed in modern mathematical terminology. The book brings together fundamental results developed by the Russian mathematical school in regularization theory and combines them with the related research in geophysical inversion carried out in the West. It presents a detailed exposition of the methods of regularized solution of inverse problems based on the ideas of Tikhonov regularization, and shows the different forms of their applications in both linear and nonlinear methods of geophysical inversion. This text is the first to treat many kinds of inversion and imaging techniques in a unified mathematical manner. The book is divided in five parts covering the foundations of the inversion theory and its applications to the solution of different geophysical inverse problems, including potential field, electromagnetic, and seismic methods. The first part is an introduction to inversion theory. The second part contains a description of the basic methods of solution of the linear and nonlinear inverse problems using regularization. The following parts treat the application of regularization methods in gravity and magnetic, electromagnetic, and seismic inverse problems. The key connecting idea of these applied parts of the book is the analogy between the solutions of the forward and inverse problems in different geophysical methods. The book also includes chapters related to the modern technology of geophysical imaging, based on seismic and electromagnetic migration. This volume is unique in its focus on providing a link between the methods used in gravity, electromagnetic, and seismic imaging and inversion, and represents an exhaustive treatise on inversion theory.
Author : Avital Kaufman,Yu.A. Dashevsky
Publisher : Elsevier
Page : 657 pages
File Size : 41,8 Mb
Release : 2003-05-23
Category : Science
ISBN : 9780080539621
The monograph introduces the reader to the world of inductive well logging - an established method for surveying the electrical conductivity of rocks surrounding a borehole. The emphasis is on developing a theory of inductive logging and on understanding logging tools basic physics, since this theory and understanding furnish valuable insights for inventing practical induction logging techniques. The first chapter of the book presents the basic laws of electromagnetism from a point of view that will facilitate the application of the theory to problems in electromagnetic logging. Many topics that play an important role in the design and interpretation of tools readings are covered. The vertical resolution and radial depth of investigation of different induction tools is systematically considered. Special attention is paid to principles of induction logging with transversal induction coils, to transient method of induction logging in media with cylindrical and horizontal interfaces and to the influence of anisotropy on the electromagnetic field measured in a conducting medium. Multi-coil differential induction probes and induction logging based on measuring the inphase component of the secondary field or the quadrature component difference are also described in detail. The last chapter is devoted to mathematical modeling of the response of induction logging tools in 3D geometries. The theory of inductive logging presented in this volume can be applied to logging after drilling as well as logging while drilling.
Author : P.E. Wannamaker,Michael S. Zhdanov
Publisher : Elsevier
Page : 304 pages
File Size : 54,9 Mb
Release : 2002-07-08
Category : Science
ISBN : 0080542999
"3-D modeling and inversion is a reality, and not an illusion." This is the clear conclusion of the Second International Symposium on Three-Dimensional Electromagnetics held at the University of Utah in 1999. Containing papers submitted by 36 authors, this volume, by the sheer number of works, their diversity, and the truly international character of the efforts attests to the vigor with which the problems of the field are pursued today. The papers in this book are grouped in three parts: 3-D EM modeling; 3-D EM inversion; and 3-D EM in practice. They cover a wide range of topics in forward modeling and inversion based on new fast approximate approaches and new efficient solutions by integral equation, finite difference and finite elements techniques. If the 1980s were the decade of rapid development in 3D seismics, the 1990s became the decade of growing interest of practical geophysicists in 3D EM modeling and inversion methods. The contributions contained in this volume represent a snapshot of today's state-of-the-art in three-dimensional electromagnetics.