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Polar Magnetic and Auroral Substorms

Author: Ching-I. Meng
Publisher:
ISBN:
Category : Auroras
Languages : en
Pages : 162

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Book Description

Polar Magnetic and Auroral Substorms

Author: Ching-I. Meng
Publisher:
ISBN:
Category : Auroras
Languages : en
Pages : 162

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Book Description

Polar and Magnetospheric Substorms

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).

Physics of Magnetospheric Substorms

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.

Dynamics of the Aurora and Associated Phenomena

Author: Syun-Ichi Akasofu
Publisher:
ISBN:
Category : Auroras
Languages : en
Pages : 430

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Book Description

Polar Auroral and Magnetic Substorms: Their Morphology and Relation to the Ring Current

Author: Ching -I. Meng
Publisher:
ISBN:
Category : Auroras
Languages : en
Pages : 600

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Book Description

Dynamics of the Aurora and Associated Phenomena. The Auroral and Polar Magnetic Substorms Over Alaska

Author: D. S. Kimball
Publisher:
ISBN:
Category : Auroras
Languages : en
Pages : 429

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Book Description

Study of Auroral X-ray Events and Their Relation to Polar Magnetic Substorms [microform]

Author: Ludovit Varga
Publisher: National Library of Canada
ISBN: 9780315129115
Category : Auroral electrojet
Languages : en
Pages : 284

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Book Description