The Magnetic Field Of The Earth

Author: Ronald T. Merrill
Editor: Academic Press
ISBN: 9780124912465
File Size: 26,60 MB
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Topics involved in studies of the Earth's magnetic field and its secular variation range from the intricate observations of geomagnetism, to worldwide studies of archeomagnetism and paleomagnetism, through to the complex mathematics of dynamo theory. Traditionally these different aspects of geomagnetism have been studied and presented in isolation from each other. The Magnetic Field of the Earth draws together these major lines of inquiry into an integrated framework to highlight the interrelationships and thus to provide a more comprehensive understanding of the geomagnetic field.The text is organized so that paleomagnetists and dynamo theoreticians may both benefit from the results and arguments presented by the other. A particular example is the presentation of paleomagnetic results to illuminate the observational constraints on geodynamo theory. Conversely, dynamo theory is explained in such a way that paleomagnetists may utilize it to present their data more effectively. Other important features of the book include a discussion of planetary magnetic fields and their implications for dynamo theory and the most recent set of magnetic charts. This unique integrated approach to the subject will make The Magnetic Field of the Earth an invaluable reference book for all geophysicists, particularly those wishing to gain insight into alternative branches of research.

The Magnetic Field Of The Earth S Lithosphere

Author: R. A. Langel
Editor: Cambridge University Press
ISBN: 9780521473330
File Size: 79,75 MB
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This 1998 book documents the collection, processing and analysis of satellite magnetic field data.

The Earth S Magnetic Field Its History Origin And Planetary Perspective

Author: McElhinny
Editor: Academic Press
ISBN: 0080954634
File Size: 55,25 MB
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The Earth's Magnetic Field : Its History, Origin, and Planetary Perspective

Earth Magnetism

Author: Wallace H. Campbell
Editor: Elsevier
ISBN: 0080504906
File Size: 68,95 MB
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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

History Of The Earth S Magnetic Field

Author: David W. Strangway
Editor:
ISBN:
File Size: 79,91 MB
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Reversals Of The Earth S Magnetic Field

Author: J. A. Jacobs
Editor: Cambridge University Press
ISBN: 0521450721
File Size: 36,20 MB
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This 1994 book examines how reversals of the Earth's magnetic field have played a major role in establishing plate tectonics and a geological time scale.

An Analysis Of The Earth S Magnetic Field From 1835 To 1965

Author: Keith L. McDonald
Editor:
ISBN:
File Size: 48,13 MB
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Our Magnetic Earth

Author: Ronald T. Merrill
Editor: University of Chicago Press
ISBN: 0226520501
File Size: 49,90 MB
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For the general public, magnetism often seems more the province of new age quacks, movie mad scientists, and grade-school teachers than an area of actual, ongoing scientific inquiry. But as Ronald T. Merrill reveals in Our Magnetic Earth, geomagnetism really is an enduring, vibrant area of science, one that offers answers to some of the biggest questions about our planet’s past—and maybe even its future.

Origin And Destiny Of The Earth S Magnetic Field

Author: Thomas G. Barnes
Editor:
ISBN:
File Size: 74,72 MB
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Satellite Attitude Control Utilizing The Earth S Magnetic Field

Author: John S. White (writer on artificial satellites.)
Editor:
ISBN:
File Size: 48,71 MB
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The torque developed by the interaction of current-carrying coils with the earth's magnetic field can be used as a means of attitude control. The degree to which the attitude of a vehicle can be maintained utilizing this torque depends on the fluctuations of the magnetic field at the satellite as the satellite orbits about the earth. Due to the nature of the torque developed only two vehicle axes can be c ntinuously controlled simultaneously. With the principle described, either a two- or three-coil system can be used to control vehicle attitude about two axes. Intermittent control about three axes can be obtained. (Author).

The Earth S Magnetic Field

Author: Girija Rajaram
Editor: Oxford & IBH Publishers
ISBN:
File Size: 79,11 MB
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Brought out on the occasion of 150 years of Coloba-Alibag Observatories of India

Earth S Magnetic Field

Author: Claudia Stolle
Editor: Springer
ISBN: 9789402412246
File Size: 27,86 MB
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This volume provides a comprehensive view on the different sources of the geomagnetic field both in the Earth’s interior and from the field’s interaction with the terrestrial atmosphere and the solar wind. It combines expertise from various relevant areas of geomagnetic and near Earth space research with the aim to better characterise the state and dynamics of Earth’s magnetic field. Advances in the exploitation of geomagnetic observations hold a huge potential not only for an improved quantitative description of the field source but also for a better understanding of the underlying processes and physics. Key is the separation of the field sources in the observations, especially, but not solely, during times of quiet geomagnetic conditions, when the most subtle geomagnetic effects can be identified and become significant. The collected articles are based on the current constellation of ground and space observations, and on state-of-the-art empirical models and physics-based simulations. Thus, it provides an in-depth overview over recent achievements, current limitations and challenges, and future opportunities in the field of geomagnetism and space sciences. Originally published in Space Science Reviews, Volume 206, Issue 1-4, March 2017

Earth S Magnetic Field Secrets

Author: Dennis Brooks
Editor: Speedy Publishing LLC
ISBN: 168127485X
File Size: 41,79 MB
Format: PDF
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The Old Theory Until now, there was only one theory regarding the source of Earth's magnetic field, which is the internal dynamo theory. This theory was accepted because it offered the best explanation at the time. Also, much research has been done to support the theory. According to the internal dynamo theory, a dynamo near the center of the planet generates the current that produces the magnetic field. This dynamo would be in the liquid outer core of the planet. It would produce the magnetic axis and project it from the planet. The axis would expand and spread the magnetic field around the planet. This theory also suggests that the internal dynamo is sustaining itself by using fuel from Earth's core. The internal dynamo theory has changed over the years. At first scientists thought that a bar magnet was in the center of the planet and the compass needle pointed to the poles of that magnet. This made perfect sense at the time because we can see that the same thing happens when we put a compass near a bar magnet. The Bar Magnet In The Sun image demonstrates the idea of the bar magnet theory. However, this example shows the bar magnet imbedded within the sun because just like the planets, the sun also has a magnetic field, which is more complex than Earth's magnetic field. Scientists have tried to use the internal dynamo theory to explain the magnetic fields of all the planets, some moons, and the sun. However, the old model does not work for the sun, moon, and other planets. The bar magnet concept lasted a long time as the main theory regarding the source of Earth's magnetic field. However, while trying to apply it to other cases, scientists found problems with the theory. Over the years, they discovered that a bar magnet could not hold magnetism above the temperature of 770 degrees centigrade because high heat destroys magnetism. This caused the theory to gradually evolve over time.

Electromagnetism And The Earth S Interior

Author: Tsuneji Rikitake
Editor: Elsevier
ISBN: 0323162509
File Size: 61,56 MB
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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.

Influence Of The Earth S Magnetic Field On The Diurnal Variation Of F0f2 Fourier Analysis

Author: R. Eyfrig
Editor:
ISBN:
File Size: 60,53 MB
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Magnetic Fields

Author:
Editor:
ISBN:
File Size: 37,22 MB
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Earth S Magnetism In The Age Of Sail

Author: A. R. T. Jonkers
Editor: JHU Press
ISBN: 9780801871320
File Size: 69,10 MB
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"A fascinating tale at the interface of geophysics, maritime history, and the history of science... A remarkable blend of scientific and historical scholarship." -- Choice

The Earth S Magnetism

Author: Roberto Lanza
Editor: Springer Science & Business Media
ISBN: 3540279792
File Size: 40,45 MB
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Initially, this book reviews the general characteristics of the Earth’s magnetic field and the magnetic properties of minerals, and then proceeds to introduce the multifold applications of geomagnetism in earth sciences. The authors analyze the contribution of geomagnetism both in more general geological fields, such as tectonics and geodynamics, and in applied ones, such as prospecting and pollution. Primarily, the book is aimed at undergraduate geology or geophysics students. It is geared to provide them with a general overview of geomagnetism, allowing them to understand what contributions this branch of science can offer in the more special sectors of earth sciences. Graduate students and geology researchers will also benefit from it, as it enables them to gain a clear and concise image of the techniques which can be applied in their areas of specialization.

The Great Earth Magnet

Author: Gillian Turner
Editor: Pacific Learning Inc
ISBN: 1604578858
File Size: 59,54 MB
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"Without Earth's magnetic field, it would be impossible for us to live. So what creates Earth's magnetism--this amazing force of nature to which we owe our lives?"--P. [4] of cover.

Lessons From Tesla

Author: Michael C Ellis
Editor:
ISBN: 9781707722648
File Size: 14,17 MB
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This volume is a collection of parts dedicated to furthering Nikola Tesla's contribution to electrical engineering. Topics explored include magnetism as it exists in a plasma form, as a remotely acting energy source, transmission of electricity through the ground, radiant energy as it occurs at the beginning of electrical discharge, practical ether circuits for heating and cooling, energy generation from the earth's magnetic circuits.