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Author: Syun-Ichi Akasofu
Publisher: Springer Science & Business Media
ISBN: 9401011648
Category : Science
Languages : en
Pages : 620
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Book Description
Man, through intensive observations of natural phenomena, has learned about some of the basic principles which govern nature. The aurora is one of the most fascinating of these natural phenomena, and by studying it, man has just begun to comprehend auroral phenomena in terms of basic cosmic electrodynamic processes. The systematic and extensive observation of the aurora during and after the great international enterprise, the International Geophysical Year (lGY), led to the concept of the auroral substorm. Like many other geophysical phenomena, auroral displays have a dual time (universal- and local-time) dependence when seen by a ground-based observer. Thus, it was a difficult task for single observers, rotating with the Earth once a day, to grasp a transient feature of a large-scale auroral display. Such a complexity is inevitable in studying many geophysical features, in particular the polar upper atmospheric phenomena. However, it was found that their complexity began to unfold when the concept of the auroral substorm was introduced. In a book entitled Polar and Magnetospheric Substorms, the predeces sor to this book, I tried to describe the auroral phenomena as completely as possible in terms of the concept of the auroral substorm. At that time, the first satellite observations of particles and magnetic fields during substorms were just becoming available, and it was suggested that the auroral sub storm is a manifestation of a magnetospheric phenomenon called the magnetospheric substorm.
Author: Syun-Ichi Akasofu
Publisher: Springer Science & Business Media
ISBN: 9401011648
Category : Science
Languages : en
Pages : 620
Get Book Here
Book Description
Man, through intensive observations of natural phenomena, has learned about some of the basic principles which govern nature. The aurora is one of the most fascinating of these natural phenomena, and by studying it, man has just begun to comprehend auroral phenomena in terms of basic cosmic electrodynamic processes. The systematic and extensive observation of the aurora during and after the great international enterprise, the International Geophysical Year (lGY), led to the concept of the auroral substorm. Like many other geophysical phenomena, auroral displays have a dual time (universal- and local-time) dependence when seen by a ground-based observer. Thus, it was a difficult task for single observers, rotating with the Earth once a day, to grasp a transient feature of a large-scale auroral display. Such a complexity is inevitable in studying many geophysical features, in particular the polar upper atmospheric phenomena. However, it was found that their complexity began to unfold when the concept of the auroral substorm was introduced. In a book entitled Polar and Magnetospheric Substorms, the predeces sor to this book, I tried to describe the auroral phenomena as completely as possible in terms of the concept of the auroral substorm. At that time, the first satellite observations of particles and magnetic fields during substorms were just becoming available, and it was suggested that the auroral sub storm is a manifestation of a magnetospheric phenomenon called the magnetospheric substorm.
Author: Syun-Ichi Akasofu
Publisher: Springer Science & Business Media
ISBN: 9401034613
Category : Science
Languages : en
Pages : 293
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Book Description
It has become increasingly clear that the magnetosphere becomes intermittently unstable and explosively releases a large amount of energy into the polar upper atmos phere. This particular magnetospheric phenomenon is called the magnetospheric sub storm. It is manifested as an activity or disturbance ofvarious polar upper atmospheric phenomena, such as intense auroral displays and X-ray bursts. Highly active conditions in the polar upper atmosphere result from a successive occurrence of such an element ary activity, the polar substorm, which lasts typically of order one to three hours. The concept of the magnetospheric substorm and its manifestation in the polar upper atmosphere, the polar substorm, has rapidly crystallized during the last few years. We can find a hint of such a concept in the term 'polar elementary storm' introduced by Kristian Birkeland as early as 1908. However, we are greatly indebted to Sydney Chapman, who established the basic foundation of magnetospheric physics and has led researches in this field during the last half century. Indeed, the terms 'polar magnetic substorm' and 'auroral substorm' were first suggested by Sydney Chapman. The concept of the substorm was then soon extended by Neil M. Brice of Cornell University, and Kinsey A. Anderson and his colleagues at the University ofCaliforrlia, Berkeley, who introduced the term 'magnetospheric substorm'. We owe many of these recent developments in magnetospheric physics to the great international enterprise, the International Geophysical Year (IGY) and subse quent international cooperative effort (IGC, IQSY).
Author: Joseph R. Kan
Publisher: American Geophysical Union
ISBN:
Category : Science
Languages : en
Pages : 504
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Book Description
Papers from the Chapman Conference on Magnetospheric Substorms, held Sept. 3-7, 1990, in Hakone, Japan.
Author: E.R. Dyer
Publisher: Springer Science & Business Media
ISBN: 9401031304
Category : Science
Languages : en
Pages : 322
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Book Description
Author: COSPAR. Scientific Assembly
Publisher: Pergamon
ISBN:
Category : Science
Languages : en
Pages : 236
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Book Description
Paperback. Magnetic reconnection is a fundamental process in a space, solar or astrophysical plasma. It changes the connectivity of plasma elements and has wide-ranging consequences, including the conversion of magnetic energy into other forms and the acceleration of particles by a variety of mechanisms. A series of numerical experiments have recently stimulated a new generation of fluid theories, with current hot topics including the 3D nature of reconnection and its properties in a collisionless plasma. The applications include energy release to heat the solar corona and power solar flares and connectivity changes in flux transfer events and geomagnetic substorms in the Magnetosphere. Containing 38 papers divided into four chapters, the present volume represents the proceedings of a memorable two-day symposium held during the COSPAR General Assembly on the theory and applications of reconnection in the Sun's corona and Earth's magnetosphere.
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 692
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Book Description
Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 408
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Book Description
Author: R. D. Hunsucker
Publisher: Cambridge University Press
ISBN: 1139435000
Category : Science
Languages : en
Pages : 639
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Book Description
A modern treatment of the physics and phenomena of the ionosphere, beginning with the basics of radio propagation and the use of radio techniques in ionospheric studies. Ample cross-referencing, chapter summaries and reference lists make this book an invaluable aid for graduate students, ionospheric physicists and radio engineers.
Author: Charles F. Kennel
Publisher: Oxford University Press
ISBN: 0195359070
Category : Science
Languages : en
Pages : 429
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Book Description
The magnetosphere is the region where cosmic rays and the solar wind interact with the Earth's magnetic field, creating such phenomena as the northern lights and other aurorae. The configuration and dynamics of the magnetosphere are of interest to planetary physicists, geophysicists, plasma astrophysicists, and to scientists planning space missions. The circulation of solar wind plasma in the magnetosphere and substorms have long been used as the principle paradigms for studying this vital region. Charles F. Kennel, a leading scientist in the field, here presents a synthesis of the convection and substorm literatures, and an analysis of convection and substorm interactions; he also suggests that the currently accepted steady reconnection model may be advantageously replaced by a model of multiple tail reconnection events, in which many mutually interdependent reconnections occur. Written in an accessible, non-mathematical style, this book introduces the reader to the exciting discoveries in this fast-growing field.
Author: International Symposium on Solar-Terrestial Physic
Publisher: Springer Science & Business Media
ISBN: 9400936931
Category : Science
Languages : en
Pages : 937
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Book Description
This volume contains the review papers presented at the International Symposium on Solar-Terrestrial Physics held at the Tavrichesky Palace, Leningrad, U.S.S.R., 11-19 May 1970. The Symposium may be regarded as the most recent member of a series of inter national symposia - for instance, the Symposium on Solar-Terrestrial Physics, Belgrade (1966), the Joint IQSY-COSPAR Symposium on Solar-Terrestrial Physics, London (1967), and the Symposium on the Physics of the Magnetosphere, Washington (1968). Like those earlier symposia, the Leningrad Symposium was sponsored by the International Astronomical Union (IAU), the International Union of Geodesy and Geophysics (IUGG), the International Union of Radio Sciences (URSI), and the ICSU Committee on Space Research (COSPAR). These bodies are all concerned with one or another aspect of solar-terrestrial physics, and all joined in believing that the time was ripe for another comprehensive symposium on all aspects of this very active field of research.
