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Author | : E. Tema |
Publisher | : Geological Society of London |
Total Pages | : 237 |
Release | : 2020-10-15 |
Genre | : Science |
ISBN | : 1786204738 |
Download Geomagnetic Field Variations in the Past Book in PDF, ePub and Kindle
In the last decades, palaeomagnetic research has provided important information about the past variation of the Earth’s magnetic field (EMF) from its origin to the present day. However, questions regarding the origin and evolution of the EMF as well as the frequency and spatial distribution of its variations still remain open to debate. This Special Publication provides new insights into the study of the temporal and spatial evolution of the EMF presenting new data from palaeomagnetic and rock magnetic studies of archaeological materials, sediments and lavas. The papers presented cover a wide range of topics related to archaeology, stratigraphy and climate, including new data from several parts of the world, such as Europe, Africa, Australia, New Zealand, India and the Baltic Sea. This Special Publication aims to present an overview of the most recent secular variation studies and their use to disclose fundamental properties of the EMF evolution.
Author | : McElhinny |
Publisher | : Academic Press |
Total Pages | : 417 |
Release | : 1984-01-04 |
Genre | : Science |
ISBN | : 0080954634 |
Download The Earth's Magnetic Field : Its History, Origin, and Planetary Perspective Book in PDF, ePub and Kindle
The Earth's Magnetic Field : Its History, Origin, and Planetary Perspective
Author | : K.H. Glaßmeier |
Publisher | : Springer Science & Business Media |
Total Pages | : 221 |
Release | : 2008-10-20 |
Genre | : Science |
ISBN | : 3540769390 |
Download Geomagnetic Field Variations Book in PDF, ePub and Kindle
Earth’s magnetic field is currently changing dramatically. Is the observed decrease of the dipole moment indicating a future polarity transition? What would be the effects of such a drastic change on system Earth? Can any positive or negative effects on our biosphere or even humans be expected? This book gives a first overview about the geomagnetic field in general and serves as an introduction into geomagnetism. As the topic of the book covers a wide range of scientific disciplines, the first chapter summarises basic principles of geomagnetism and related fields including a historic overview, instruments and measurements, paleomagnetic fields, basics of dynamo theory, etc. The contributed chapters review major results of international activities aiming at understanding the causes and effects of geomagnetic field variations in view of the questions above.
Author | : Masaru Kono |
Publisher | : Elsevier |
Total Pages | : 605 |
Release | : 2010-05-11 |
Genre | : Science |
ISBN | : 0444535780 |
Download Treatise on Geophysics, Volume 5 Book in PDF, ePub and Kindle
Treatise on Geophysics: Geomagnetism, Volume 5, provides an overview of the most important aspects of geomagnetism. The book begins by tracing the history of the study of geomagnetism. It then reviews global models of the Earth's magnetic field; the main sources of external magnetic field contributions; and the instruments and practices used to observe and measure the full range of features of the geomagnetic field. It discusses the origins of current knowledge of the secular variation of the Earth's magnetic field; crustal magnetism; geomagnetic excursions; the study of geophysical electromagnetic induction; the magnetization process; and the status of recent magnetic field data and their applications. The remaining chapters cover the geometry of the geomagnetic field and its temporal variability as recorded in volcanic and sedimentary rocks over the past few million years; the ocean crust as a recorder of geomagnetic field variations; and the theoretical basis for paleointensity experiments in igneous and sedimentary environments. The final chapter explains the concept of true polar wander (TPW), defined as shifts in the geographic location of Earth's daily rotation axis and/or by fluctuations in the spin rate (length of day anomalies). Self-contained volume starts with an overview of the subject then explores each topic with in depth detail Extensive reference lists and cross references with other volumes to facilitate further research Full-color figures and tables support the text and aid in understanding Content suited for both the expert and non-expert
Author | : Mioara Mandea |
Publisher | : Cambridge University Press |
Total Pages | : 347 |
Release | : 2019-11-14 |
Genre | : Science |
ISBN | : 1108418481 |
Download Geomagnetism, Aeronomy and Space Weather Book in PDF, ePub and Kindle
An interdisciplinary review of research in geomagnetism, aeronomy and space weather, written by eminent researchers from these fields.
Author | : F.R. Stephenson |
Publisher | : Springer Science & Business Media |
Total Pages | : 511 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 9400930119 |
Download Secular Solar and Geomagnetic Variations in the Last 10,000 Years Book in PDF, ePub and Kindle
Solar and geomagnetic variability are of considerable interest for scientists of many different persuasions and indeed one has the distinct impression that for the sun at least, there is direct relevance for mankind in general as the interrelation between solar and terrestrial phenomena is starting to be appreciated. From the vast time scale of interest in the variability field, attention was confined to the last 10,000 years in a NATO Advanced Research Workshop held from April 6 - 10, 1987 in Durham, England, and the present publication comprises the lectures given there. Such a Workshop was very timely in view of the impressive new data available from 14C analysis in dated tree rings and lOBe in polar ice cores, from natural palaeomagnetic records in lacustrine sediments and from archaeomagnetic material. Also to be mentioned are new studies of historical accounts of naked-eye sunspots and aurorae. All the data have contributed to improvements in under standing the relative variations of solar properties, the geomagnetic field and climate and it is hoped that this volume will convey the flavour of these advances in knowledge. A feature of the Workshop was the lively discussions which followed so many of the papers. There were several instances of healthy disagreement and this is reflected in the opposing views presented inanumber of the papers published here.
Author | : Kilifarska N.A. |
Publisher | : Elsevier |
Total Pages | : 230 |
Release | : 2020-06-19 |
Genre | : Science |
ISBN | : 0128193476 |
Download The Hidden Link Between Earth’s Magnetic Field and Climate Book in PDF, ePub and Kindle
The Hidden Link Between Earth’s Magnetic Field and Climate offers a new framework of understanding and interpretation for both well-known and less known relations between different geophysical and meteorological variables which can improve the quality of climate modeling. The book reviews the most current research on both current and paleo data to introduce a causal chain of interactions between the geomagnetic field, energetic particles which bombard the Earth’s atmosphere, ozone and humidity near the tropopause, and surface temperature. The impacts of these complicated interactions is not uniformly distributed over the globe, thus contributing to our understanding of regional differences in climatic changes and the asymmetrical ozone distribution over the globe. Covers the newly discovered autocatalytic cycle for ozone production in the lower stratosphere, providing a better understanding of the heterogeneous distribution of ozone globally Outlines a mechanism for the lower stratospheric ozone influence on the temperature and humidity of the upper troposphere Provides a single resource on research in energetic particles’ modulation by heterogeneous geomagnetic fields, mechanisms of the influence of particles on the atmospheric ozone, and the influence of ozone on climate
Author | : Sheng-shyong Lee |
Publisher | : |
Total Pages | : 400 |
Release | : 1975 |
Genre | : Geomagnetism |
ISBN | : |
Download Secular Variation of the Intensity of the Geomagnetic Field During the Past 3,000 Years in North, Central, and South America Book in PDF, ePub and Kindle
Author | : David J. Knecht |
Publisher | : |
Total Pages | : 140 |
Release | : 1972 |
Genre | : Cosmic magnetic fields |
ISBN | : |
Download The Geomagnetic Field Book in PDF, ePub and Kindle
This survey summarizes what is known about the magnetic field of the earth, based on information available through 1971. Observed phenomena are described and interpreted in terms of the most widely accepted physical explanations. An overview of the geomagnetic field and its dynamic relationship with its terrestrial and interplanetary environment is first presented as briefly as possible, followed by more detailed descriptions of geomagnetic measurements and experimental methods, precise current models and past behavior of the main field, regular variations in the field resulting from the motion of the earth, disturbance variations of the field produced by interplanetary environment, and dynamic processes occurring in the outer magnetosphere. Extensive references is a replacement for Chapter 11 of Handbook of Geophysics and Space Environment (Shea L. Valley, ed.), Air Force Cambridge Research Laboratories and McGraw-Hill Book Co., New York, 1965.
Author | : Wallace Hall Campbell |
Publisher | : |
Total Pages | : 24 |
Release | : 1971 |
Genre | : Geomagnetism |
ISBN | : |
Download Introduction to Solar Terrestrial Activity for Geomagnetic Studies Book in PDF, ePub and Kindle
The purpose of this paper is to introduce the reader to the active sun as a source of disturbance that affect the magnetic field measured at the earth's surface. Included under this topic are the general sun's properties, solar surface activity centers and characteristics of the solar field and ejecta flowing into interplanetary space.