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Author: James Wait
Publisher: Elsevier
ISBN: 0323158099
Category : Technology & Engineering
Languages : en
Pages : 279
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Book Description
Geo-Electromagnetism surveys the theoretical concepts and applications of electrical prospecting methods. This book is divided into seven chapters that specifically tackle the basic electromagnetic concepts and the special mathematical functions. This text deals first with the numerical and analytical approaches to delineate earth resistivity principles, followed by a description of the three-layer model. These topics are followed by a discussion on the theory of induced electrical polarization. The subsequent chapters are devoted to relevant electromagnetic theory of low-frequency current flow in conducting with varying fields. The discussion then shifts to the geophysical problems associated with vertical electric dipole sources, with an emphasis on the quasi-static range in which all significant distances are small compared with the free-space wavelength. The last chapters outline the relevant analytical development of the magnetotelluric theory and the theoretical principles of the transient electromagnetic methods used in geophysical exploration. Geophysicists, theoreticians, and undergraduate level students will find this book invaluable.
Author: James Wait
Publisher: Elsevier
ISBN: 0323158099
Category : Technology & Engineering
Languages : en
Pages : 279
Get Book
Book Description
Geo-Electromagnetism surveys the theoretical concepts and applications of electrical prospecting methods. This book is divided into seven chapters that specifically tackle the basic electromagnetic concepts and the special mathematical functions. This text deals first with the numerical and analytical approaches to delineate earth resistivity principles, followed by a description of the three-layer model. These topics are followed by a discussion on the theory of induced electrical polarization. The subsequent chapters are devoted to relevant electromagnetic theory of low-frequency current flow in conducting with varying fields. The discussion then shifts to the geophysical problems associated with vertical electric dipole sources, with an emphasis on the quasi-static range in which all significant distances are small compared with the free-space wavelength. The last chapters outline the relevant analytical development of the magnetotelluric theory and the theoretical principles of the transient electromagnetic methods used in geophysical exploration. Geophysicists, theoreticians, and undergraduate level students will find this book invaluable.
Author: Wallace H. Campbell
Publisher: Academic Press
ISBN: 9780121581640
Category : Science
Languages : en
Pages : 206
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Book Description
An introductory guide to global magnetic field properties, Earth Magnetism addresses, in non-technical prose, many of the frequently asked questions about Earth's magnetic field. Magnetism surrounds and penetrates our Earth in ways basic science courses can rarely address. It affects navigation, communication, and even the growth of crystals. As we observe and experience an 11-year solar maximum, we may witness spectacular satellite-destroying solar storms as they interact with our magnetic field. Written by an acknowledged expert in the field, this book will enrich courses in earth science, atmospheric science, geology, meteorology, geomagnetism, and geophysics. Contains nearly 200 original illustrations and eight pages of full-color plates. * Largely mathematics-free and with a wide breadth of material suitable for general readers * Integrates material from geomagnetism, paleomagnetism, and solar-terrestrial space physics. * Features nearly 200 original illustrations and 4 pages of colour plates
Author: William Lowrie
Publisher: Oxford University Press
ISBN: 0192677136
Category : Science
Languages : en
Pages : 177
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Book Description
The Earth's magnetic field has existed for hundreds of millions of years, far longer than life has existed on Earth, and affects our lives in many ways. We can use it to orient buildings and navigate across unmarked territory. Moreover, it protects us from harmful radiation from space. Intended as an introductory guide for non-specialist readers, this book describes the historical importance of the Earth's magnetic field and its role in protecting the planet from harmful high-energy radiation from the Sun. With explanations of underlying physics of processes and references to original scientific works, the reader can explore the Earth's magnetic field and the various ways in which geomagnetics are used and measured, including the analysis of modern satellite-based investigations and the effects of solar activity on the geomagnetic field.
Author: Albert Kienzie Ludy
Publisher:
ISBN:
Category : Geomagnetism
Languages : en
Pages : 88
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Book Description
Author: Tsuneji Rikitake
Publisher: Elsevier
ISBN: 0323162509
Category : Science
Languages : en
Pages : 321
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Book Description
Electromagnetism and the Earth's Interior reviews the earth's magnetic fields in terms of physical processes that are occurring in the earth's interior. The book describes the distribution of the earth's magnetic field in terms of declination, horizontal intensity, and vertical intensity. The dynamo theory concerns the self-exciting electric generation in the interior of the earth, and can account for any geomagnetic secular variation. A workable laboratory model—a dynamo mechanism of Lowes and Wilkinson (1963) has a significant role on the dynamo theory for the model actually demonstrated Herzenberg's proof that was developed mathematically. The text also describes various aspects of long-term geomagnetic variations, such as the decrease in the dipole moment, the reversal of the geomagnetic field, the drift of eccentric dipole, the fluctuation in the length of day, and the geomagnetic secular variation. The book also investigates the possible effects of the ocean on geomagnetic variations. The characteristics of transient geomagnetic variations on islands can point to a possible special underground structure. The book is suitable for geologists, astrophysicists, seismologists, and students of the natural sciences.
Author: Viacheslav V. Spichak
Publisher:
ISBN: 0128196319
Category :
Languages : en
Pages : 462
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Book Description
Computational Geo-Electromagnetics: Methods, Models, and Forecasts, Volume Five in the Computational Geophysics series, is devoted to techniques for building of geoelectrical models from electromagnetic data, featuring Bayesian statistical analysis and neural network algorithms. These models are applied to studying the geoelectrical structure of famous volcanoes (i.e., Vesuvio, Kilauea, Elbrus, Komagatake, Hengill) and geothermal zones (i.e., Travale, Italy; Soultz-sous-Forets, Elsace). Methodological recommendations are given on electromagnetic sounding of faults as well as geothermal and hydrocarbon reservoirs. Techniques for forecasting of petrophysical properties from the electrical resistivity as proxy parameter are also considered. Computational Geo-Electromagnetics: Methods, Models, and Forecasts offers techniques and algorithms for building geoelectrical models under conditions of rare or irregularly distributed EM data and/or lack of prior geological and geophysical information. This volume also includes methodological guidelines on interpretation of electromagnetic sounding data depending on goals of the study. Finally, it details computational algorithms for using electrical resistivity for properties beyond boreholes. Provides algorithms for inversion of incomplete, rare or irregularly distributed EM data Features methodological issues of building geoelectrical models Offers techniques for retrieving petrophysical properties from EM sounding data and well logs
Author: Gregory A. Good
Publisher: Routledge
ISBN: 1136760970
Category : History
Languages : en
Pages : 460
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Book Description
The planet as seen by its inhabitants In two millenia, our knowledge of the planet and its natural laws and forces has undergone remarkable changes--from the religious belief of earth as the center of the universe to the modern astronomers' view that it is a mere speck in the cosmos. Now a first-of-its-kind reference work charts this remarkable intellectual progression in our evolving perception of the earth by surveying the history of geology, geography, geophysics, oceanography, meteorology, space science, and many other fields. Covers human understanding of the Earth in various times and cultures The Encyclopedia traces our understanding of the earth and its functioning throughout history, summarizing historical explanations of earthly occurrences, including explanations with no scientific basis. It presents the latest facts and theories, explains how our understanding of the earth has evolved, and shows why many outrageous and fanciful earlier ideas were accepted in their time. The coverage explores the physical phenomena that inform our knowledge, starting at the earth's core and extending outward through the mantle, crust, oceans, and atmosphere to the magnetosphere and beyond. Charts the evolution of our perceptions The primary focus of the Encyclopedia is the history of the study of the earth. It also discusses the institutions that advanced and shaped science and probes the interplay between science, practical applications, and social and political forces. The result is a unified historical overview of the earth across a wide canvas of time and place, from antiquity to the space age. Its wide-ranging articles summarize subjects as diverse as geography and imperialism, environmentalism, computers and meteorology, ozone formation theories since 1800, scientific rocketry, the Scopes trial, and much more. Special Features Shows how diverse disciplines, from geology to space science, fit together in a coherent view of the earth * Explains earlier ideas and theories in the context of the beliefs and scientific knowledge of their time * Spotlights important institutions that have shaped the history of science * Explores relationships between science, practical applications, and sociopolitical concerns * Provides a subject index and an index of scientists with birth/death dates
Author: Christina Reed
Publisher: Infobase Publishing
ISBN: 1438109792
Category : Juvenile Nonfiction
Languages : en
Pages : 385
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Book Description
Contains a history of earth sciences, providing definitions and explanations of related topics, plus brief biographies of scientists of the twentieth century.
Author: Misac N. Nabighian
Publisher: SEG Books
ISBN: 1560800224
Category : Electromagnetic fields
Languages : en
Pages : 989
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Book Description
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: Stéphane Sainson
Publisher: Springer
ISBN: 3319453556
Category : Science
Languages : en
Pages : 536
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Book Description
Seabed logging (SBL) gathers the electromagnetic methods of marine subsoil exploration and more specifically those dedicated to the exploration of oil and gas at sea. Appeared in 2000, these techniques, with more than 500 industrial jobs, present after 15 years of commercial success a discovery record rate of nearly 90 % and seem now to turn the world in the offshore exploration field. Proposing a serious index of the presence of hydrocarbons , electromagnetic SBL coupled with seismic reflection survey is probably the first reliable method for direct detection of hydrocarbons. Complementing the structural concepts of oil exploration used since the 1920s, the SBL now radically modifies the approach and the philosophies of exploration especially those then including drilling and well logging activities. Electromagnetic Seabed Logging: a new tool for oil and gas prospecting, which original publication in French was in 2012, presents these methods, its principles, advantages, limitations, instruments, modeling and applications. It is also designed to be a tool for a reflection on the use of electromagnetic energy for the exploration in a conductive medium as sea water thus setting the theoretical and practical limits of these investigations for future developments. This book is intended of course for the geophysicists and the petroleum geologists, but also for the earth scientists, the reservoir engineers and the log analysts
