Author: Leonid S. Alperovich
Publisher: Springer Science & Business Media
ISBN: 1402066376
Category : Science
Languages : en
Pages : 437
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Book Description
Here is a fascinating text that integrates topics pertaining to all scales of the MHD-waves, emphasizing the linkages between the ULF-waves below the ionosphere on the ground and magnetospheric MHD-waves. It will be most helpful to graduate and post-graduate students, familiar with advanced calculus, who study the science of MHD-waves in the magnetosphere and ionosphere. The book deals with Ultra-Low-Frequency (ULF)-electromagnetic waves observed on the Earth and in Space.
Author: William F. Bellew
Publisher:
ISBN:
Category :
Languages : en
Pages : 121
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Book Description
This report details the specifications of the min-computer located at AFCRL, which has been installed for data reception in the MAGAF (Micropulsation Analysis for Geomagnetic Activity Forecasting) network. Further, mathematical analyses of magnetospheric models are presented, together with computer programs written to produce theoretical results for anticipated network problems.
Author: Henry R. Radoski
Publisher:
ISBN:
Category : Machinery
Languages : en
Pages : 24
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Book Description
The reduction of the oscillations of the magnetosphere to a simple mechanical analogue, which can be analyzed in detail, is accomplished in three stages: (1) The comparison of the wave equations for a dipole field magnetized plasma to those for a rectangular model of the plasmasphere with a unidirectional field -- the important physical characteristics are shown to be independent of the particular geometry chosen; (2) the comparison of the equations in the above hydromagnetic box with those of a mechanical system consisting of a set of oscillators, representing field lines, coupled by a wave propagating medium -- for the symmetric modes with weak ion-cyclotron coupling, the equations for the hydromagnetic and mechanical systems are essentially identical; (3) the simplification of the mechanical system to an elementary wave-oscillator model representing the coupling between resonant poloidal and toroidal modes -- the nature of the motion of this model is independent of the strength of the coupling. In general, the behavior of coupled and uncoupled modes is essentially different. When any coupling is present, steady state solutions, as normally understood, are not possible. (Author).
Author: M. Patricia Hagan
Publisher:
ISBN:
Category :
Languages : en
Pages : 53
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Book Description
This report provides a guide to the understanding of the operation of the mini-computer which is currently under development and testing, in preparation for the operation of the micropulsation network.
Author: A.D.M. Walker
Publisher: Springer Science & Business Media
ISBN: 3642778674
Category : Science
Languages : en
Pages : 355
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Book Description
This book is a study of plasma waves which are observed in the earth's magnetosphere. The emphasis is on a thorough, but concise, treatment of the necessary theory and the use of this theory to understand the manifold varieties of waves which are observed by ground-based instruments and by satellites. We restrict our treatment to waves with wavelengths short compared with the spatial scales of the background plasma in the mag netosphere. By so doing we exclude large scale magnetohydrodynamic phenomena such as ULF pulsations in the Pc2-5 ranges. The field is an active one and we cannot hope to discuss every wave phenomenon ever observed in the magnetosphere! We try instead to give a good treatment of phenomena which are well understood, and which illustrate as many different parts of the theory as possible. It is thus hoped to put the reader in a position to understand the current literature. The treatment is aimed at a beginning graduate student in the field but it is hoped that it will also be of use as a reference to established workers. A knowledge of electromagnetic theory and some elementary plasma physics is assumed. The mathematical background required in cludes a knowledge of vector calculus, linear algebra, and Fourier trans form theory encountered in standard undergraduate physics curricula. A reasonable acquaintance with the theory of functions of a complex vari able including contour integration and the residue theorem is assumed.
Author: John Carstoiu
Publisher:
ISBN:
Category : Magnetic dipoles
Languages : en
Pages : 48
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Book Description
Author: Daniel Edward Gibbons
Publisher:
ISBN:
Category :
Languages : en
Pages : 98
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Book Description
Author: Nicholas Gothárd
Publisher:
ISBN:
Category : Magnetohydrodynamics
Languages : en
Pages : 258
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Book Description
Author: Henry R. Radoski
Publisher:
ISBN:
Category : Geomagnetic micropulsations
Languages : en
Pages : 40
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Book Description
Author: Henry R. Radoski
Publisher:
ISBN:
Category : Machinery
Languages : en
Pages : 0
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Book Description
The reduction of the oscillations of the magnetosphere to a simple mechanical analogue, which can be analyzed in detail, is accomplished in three stages: (1) The comparison of the wave equations for a dipole field magnetized plasma to those for a rectangular model of the plasmasphere with a unidirectional field -- the important physical characteristics are shown to be independent of the particular geometry chosen; (2) the comparison of the equations in the above hydromagnetic box with those of a mechanical system consisting of a set of oscillators, representing field lines, coupled by a wave propagating medium -- for the symmetric modes with weak ion-cyclotron coupling, the equations for the hydromagnetic and mechanical systems are essentially identical; (3) the simplification of the mechanical system to an elementary wave-oscillator model representing the coupling between resonant poloidal and toroidal modes -- the nature of the motion of this model is independent of the strength of the coupling. In general, the behavior of coupled and uncoupled modes is essentially different. When any coupling is present, steady state solutions, as normally understood, are not possible. (Author)
