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Author: R. A. Heelis Publisher: ISBN: Category : Languages : en Pages : 17
Book Description
A broad range of scientific investigations ranging from the development of large scale models of ionospheric convection to small scale plasma flows associated with polar cap arcs is described. It is shown that during times of northward IMF, coherent mesoscale convection features can frequently be identified at high latitudes. We now have the ability to quite accurately reproduce the convective features of the plasma at high latitudes during periods of southward IMF. Advance in our understanding of electric field coupling in plasma structures and the differences in local and height integrated Joule heating rates are also described. The importance of the bottomside F-region concentration in determining the effectiveness of electrical coupling is emphasized. Keywords: Aurora; Ionosphere; Electric fields. (JHD).
Author: R. A. Heelis Publisher: ISBN: Category : Languages : en Pages : 17
Book Description
A broad range of scientific investigations ranging from the development of large scale models of ionospheric convection to small scale plasma flows associated with polar cap arcs is described. It is shown that during times of northward IMF, coherent mesoscale convection features can frequently be identified at high latitudes. We now have the ability to quite accurately reproduce the convective features of the plasma at high latitudes during periods of southward IMF. Advance in our understanding of electric field coupling in plasma structures and the differences in local and height integrated Joule heating rates are also described. The importance of the bottomside F-region concentration in determining the effectiveness of electrical coupling is emphasized. Keywords: Aurora; Ionosphere; Electric fields. (JHD).
Author: William J. Burke Publisher: ISBN: Category : Atmospheric models Languages : en Pages : 84
Book Description
This report provides an introductory overview of electrodynamic interactions between the magnetosphere and ionosphere. In the first half of the paper, the viscous interaction and magnetic merging models for driving convection are described. The notion of adiabatic heating as a natural consequence of convection is introduced, in conjunction with a quasi-empirical model for the magnetospheric potential. The second half of the paper concerns observations of electrodynamic quantities taken in the topside ionosphere in the polar cap and auroral oval.
Author: Michael Kelly Publisher: Elsevier ISBN: 0323148050 Category : Science Languages : en Pages : 500
Book Description
The Earth's Ionosphere: Plasma Physics and Electrodynamics emphasizes the study of plasma physics and electrodynamics of the ionosphere, including many aeronomical influences. The ionosphere is somewhat of a battleground between the earth's neutral atmosphere and the sun's fully ionized atmosphere, in which the earth is embedded. One of the challenges of ionosphere research is to know enough about these two vast fields of research to make sense out of ionospheric phenomena. This book provides insights into how these competing sources of mass, momentum, and energy compete for control of the ionosphere. Some of the topics discussed include the fundamentals of ionospheric plasma dynamics; equatorial plasma instabilities; high-latitude electrodynamics; and instabilities and structure in the high-latitude ionosphere. Throughout this text only the region above 90 km are discussed, ignoring the D region entirely. This publication is a good source of information for students and individuals conducting research on earth’s ionosphere.
Author: Chao Huang Publisher: John Wiley & Sons ISBN: 1119507553 Category : Science Languages : en Pages : 47
Book Description
A comprehensive review of global ionospheric research from the polar caps to equatorial regions It's more than a century since scientists first identified the ionosphere, the layer of the Earth’s upper atmosphere that is ionized by solar and cosmic radiation. Our understanding of this dynamic part of the near-Earth space environment has greatly advanced in recent years thanks to new observational technologies, improved numerical models, and powerful computing capabilities. Ionosphere Dynamics and Applications provides a comprehensive overview of historic developments, recent advances, and future directions in ionospheric research. Volume highlights include: Behavior of the ionosphere in different regions from the poles to the equator Distinct characteristics of the high-, mid-, and low-latitude ionosphere Observational results from ground- and space-based instruments Ionospheric impacts on radio signals and satellite operations How earthquakes and tsunamis on Earth cause disturbances in the ionosphere The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals. Find out more about the Space Physics and Aeronomy collection in this Q&A with the Editors in Chief
Author: William J. Burke Publisher: ISBN: Category : Atmospheric models Languages : en Pages : 80
Book Description
This report provides an introductory overview of electrodynamic interactions between the magnetosphere and ionosphere. In the first half of the paper, the viscous interaction and magnetic merging models for driving convection are described. The notion of adiabatic heating as a natural consequence of convection is introduced, in conjunction with a quasi-empirical model for the magnetospheric potential. The second half of the paper concerns observations of electrodynamic quantities taken in the topside ionosphere in the polar cap and auroral oval.
Author: Michael C. Kelley Publisher: ISBN: 9780124040137 Category : Science Languages : en Pages : 487
Book Description
For advanced undergraduate and beginning graduate students in atmospheric, oceanic, and climate science, Atmosphere, Ocean and Climate Dynamics is an introductory textbook on the circulations of the atmosphere and ocean and their interaction, with an emphasis on global scales. It will give students a good grasp of what the atmosphere and oceans look like on the large-scale and why they look that way. The role of the oceans in climate and paleoclimate is also discussed. The combination of observations, theory and accompanying illustrative laboratory experiments sets this text apart by making it accessible to students with no prior training in meteorology or oceanography. * Written at a mathematical level that is appealing for undergraduates and beginning graduate students * Provides a useful educational tool through a combination of observations and laboratory demonstrations which can be viewed over the web * Contains instructions on how to reproduce the simple but informative laboratory experiments * Includes copious problems (with sample answers) to help students learn the material.
Author: R. D. Hunsucker Publisher: Cambridge University Press ISBN: 1139435000 Category : Science Languages : en Pages : 639
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: Hari K. Sen Publisher: ISBN: Category : Electric fields Languages : en Pages : 28
Book Description
The anomalously high electron temperature in the lower ionosphere (E-region) cannot be attributed to photoelectrons (Spencer and Brace, 1965). In this report, it is shown that electric fields due to charge separation in the dynamo region provide adequate energy for this purpose. Application of the formula for the velocity distribution of the electrons in crossed electric and magnetic fields (Sen and Wyller, 1960) to the observational data gives electric fields perpendicular to the magnetic field of intensity about 20 to 40 V/km. This is an order of magnitude higher than that obtained in the current dynamo theory. A theory of the origin of the electric field in charge separation due to neutral wind drag is given. The theory leads to the right order of magnitude estimate of the dimensions of ionospheric irregularities. Another likely source for the electric field is where the solar wind meets the magnetosphere (magnetopause). It is shown that a field approx. 1 V/m can build up in the magnetospheric plasma sheath, as in a discharge tube, and be conducted down into the ionosphere along the lines of magnetic force. It is further shown that an electric field of this magnitude can cause the requisite auroral particle acceleration and sheath current for the main phase of magnetic storms. (Author).
Author: R. A. Heelis
Author: R. A. Heelis
Author: William J. Burke
Author: Michael Kelly
Author: Chao Huang
Author: Fang Li
Author: William J. Burke
Author: Michael C. Kelley
Author: R. D. Hunsucker
Author: Da-Yue Zhang
Author: Hari K. Sen