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Author: W. J. Raitt Publisher: ISBN: Category : Languages : en Pages : 88
Book Description
The report surveys theoretical and experimental studies of ionospheric dynamics made during the contract period. Two major aspects of this topic were studied; the outflow of He (+) from the earth's ionosphere, and the effect of magnetospheric convection on the high latitude ionosphere. Model programs were written to study the general characteristics of the outflow of He(+) and also to make quantitative estimates of the escape flux of this ion. An existing model program for studying the effect of convection electric field on the F-region was updated and the N(+) ion was included in the model. Initial work was started to incorporate realistic convection trajectories in the model program. Experimental data from the S3-2 satellite was used to compare with theoretical predictions of both the variation of plasma density with perpendicular electric field and the onset of light ion outflow at high latitudes. While the light ion outflow showed good agreement with theory, the effects of perpendicular electric fields did not and provided further stimulus to incorporate the effect of convection trajectories in our ionospheric models. (Author).
Author: W. J. Raitt Publisher: ISBN: Category : Languages : en Pages : 88
Book Description
The report surveys theoretical and experimental studies of ionospheric dynamics made during the contract period. Two major aspects of this topic were studied; the outflow of He (+) from the earth's ionosphere, and the effect of magnetospheric convection on the high latitude ionosphere. Model programs were written to study the general characteristics of the outflow of He(+) and also to make quantitative estimates of the escape flux of this ion. An existing model program for studying the effect of convection electric field on the F-region was updated and the N(+) ion was included in the model. Initial work was started to incorporate realistic convection trajectories in the model program. Experimental data from the S3-2 satellite was used to compare with theoretical predictions of both the variation of plasma density with perpendicular electric field and the onset of light ion outflow at high latitudes. While the light ion outflow showed good agreement with theory, the effects of perpendicular electric fields did not and provided further stimulus to incorporate the effect of convection trajectories in our ionospheric models. (Author).
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: 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: 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: Paul M. Kintner, Jr. Publisher: John Wiley & Sons ISBN: 1118671716 Category : Science Languages : en Pages : 762
Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 181. Filling the need for a 20-year lag in substantial consideration of the midlatitude ionosphere, this volume focuses on work that takes advantage of GPS and UV imaging from satellites over the past decade, two methods that have profoundly transformed our understanding of this stratum of the atmosphere. Its interdisciplinary content brings together researchers of the solar wind, magnetosphere, ionosphere, thermosphere, polar and equatorial ionospheres, and space weather. Modeling and assimilative imaging of the ionosphere and thermosphere show for the first time the complex and global impact of midlatitude ionospheric storms. The editors invited the leading experts in the following areas to contribute the chapters herein: Characterization of Midlatitude Storms Electric Field Coupling From the Heliosphere and Inner Magnetosphere Thermospheric Control of the Midlatitude Ionosphere Ionospheric Irregularities Experimental Methods and New Techniques These themes were chosen to create a path for understanding the midlatitude ionosphere. They continue to be largely valid and represent a coherent division of the subject matter. They will be critical for understanding space weather during the upcoming solar maximum. This book was inspired by the Chapman Conference of the same name held January 2007.
Author: Bodo W. Reinisch Publisher: ISBN: Category : Languages : en Pages : 165
Book Description
Structure and dynamics of the ionosphere are explored under this contract by digital high-frequency sounding techniques. The research emphasizes the investigation of the auroral and subauroral ionosphere, but also includes studies on the polar cap and mid-latitude ionosphere. Keywords: Drift, Main F-Layer trough.
Author: Chris Watson Publisher: ISBN: Category : Ionospheric electron density Languages : en Pages : 0
Book Description
The solar wind, magnetosphere and ionosphere (SW-M-I) constitute a highly coupled system, where solar wind energy drives dynamic processes of the magnetospheric cavity and embedded ionosphere. The high latitude ionosphere has an inherently complex structure and dynamic behavior due to direct coupling to the solar wind and outer magnetosphere. Energy and charged particles deposited in the high latitude ionosphere via SW-M-I coupling processes generate ionization structures with variable spatial scales and dynamic behavior. Characteristics of ionization structures, such as their source, generation mechanisms, and evolution, are not well understood, largely due to past inadequacies in observational capabilities at high latitudes. From a physics perspective, the observation of high latitude ionospheric processes and structures is a proven technique for studying physical processes in the magnetosphere and solar wind. From an industrial and societal perspective, the dynamic high latitude ionosphere is potentially problematic due to significant impacts on electromagnetic signals used for navigation and communication. Recent installation of high data rate Global Positioning System (GPS) receivers of the Canadian High Arctic Ionospheric Network (CHAIN) has provided new, high resolution observations of the high latitude ionosphere. This thesis uses a statistical study and case studies to investigate the characteristics and source regions of ionospheric total electron content (TEC) variations observed by CHAIN GPS receivers. In the statistical study, occurrence rate, amplitude, and frequency of TEC variations were examined, in order to investigate the dependence of these characteristics on magnetic local time, latitude, and solar wind conditions. In three case studies, variations in TEC resulting from ultra-low frequency (ULF) waves in Earth’s geomagnetic field were observed. It is shown that GPS TEC has a significant response to various ULF wave classifications and intensities, and is a potentially valuable tool for high resolution study of ULF activity and the associated ionospheric response.
Author: J. D. Huba Publisher: John Wiley & Sons ISBN: 1118704452 Category : Science Languages : en Pages : 735
Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 201. Modeling the Ionosphere-Thermosphere System brings together for the first time a detailed description of the physics of the IT system in conjunction with numerical techniques to solve the complex system of equations that describe the system, as well as issues of current interest. Volume highlights include discussions of: Physics of the ionosphere and thermosphere IT system, and the numerical methods to solve the basic equations of the IT system The physics and numerical methods to determine the global electrodynamics of the IT system The response of the IT system to forcings from below (i.e., the lower atmosphere) and from above (i.e., the magnetosphere) The physics and numerical methods to model ionospheric irregularities Data assimilation techniques, comparison of model results to data, climate variability studies, and applications to space weather Providing a clear description of the physics of this system in several tutorial-like articles, Modeling the Ionosphere-Thermosphere System is of value to the upper atmosphere science community in general. Chapters describing details of the numerical methods used to solve the equations that describe the IT system make the volume useful to both active researchers in the field and students.
Author: W. J. Raitt
Author: W. J. Raitt
Author: Chao Huang
Author: Da-Yue Zhang
Author: R. D. Hunsucker
Author: Fang Li
Author: Michael Kelly
Author: Paul M. Kintner, Jr.
Author: Bodo W. Reinisch
Author: Chris Watson
Author: J. D. Huba