Excitation Of Langmuir Wave Turbulence In High Frequency Hf Pump Waves Over Gakona Alaska
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Excitation Of Langmuir Wave Turbulence In High Frequency Hf Pump Waves Over Gakona Alaska
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Author : Daniel L. Rokusek
language : en
Publisher:
Release Date : 2006
Excitation Of Langmuir Wave Turbulence In High Frequency Hf Pump Waves Over Gakona Alaska written by Daniel L. Rokusek and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
(Cont.) Investigated in this thesis are the excitation and observation of Langmuir wave turbulence caused by the parametric decay instability (PDI) in high-frequency space plasma heating experiments conducted at the NSF/DoD High Frequency Active Auroral Research Program (HAARP) facility in Gakona, Alaska during the spring and summer of 2006. The PDI is the decay of an electromagnetic (EM) wave into an electron plasma wave (i.e., Langmuir wave) and an ion acoustic wave. When the excited Langmuir wave parametrically decays into another Langmuir and ion acoustic wave pair, a cascade of Langmuir waves can occur provided that the instability threshold is satisfied. According to recently advanced theory by Kuo and Lee [2005], there are two possible methods of cascade: non-resonant and resonant. While the non-resonant cascade proceeds at the location of excitation, the resonant process occurs at lower altitudes to minimize losses that the non-resonant process incurs by remaining at the excitation altitude. Such losses are caused by the frequency mismatch effect, as the decay ion acoustic wave frequency becomes much less than that of the normal ion acoustic waves. In their downward propagation the Langmuir waves in the resonant cascade suffer from propagation losses, however these losses are less than those associated with the non-resonant process. The resonant process is therefore expected to have a lower threshold. Theoretical claims and calculations are compared to observations made at Arecibo, Puerto Rico and Tromso, Norway. Claims are also are supported by incoherent backscatter radar observations made at the HAARP facility in Gakona.
Nonlinear Wave And Plasma Structures In The Auroral And Subauroral Geospace
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Author : Evgeny Mishin
language : en
Publisher: Elsevier
Release Date : 2021-12-03
Nonlinear Wave And Plasma Structures In The Auroral And Subauroral Geospace written by Evgeny Mishin and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-12-03 with Science categories.
Nonlinear Wave and Plasma Structures in the Auroral and Subauroral Geospace presents a comprehensive examination of the self-consistent processes leading to multiscale electromagnetic and plasma structures in the magnetosphere and ionosphere near the plasmapause, particularly in the auroral and subauroral geospace. It utilizes simulations and a large number of relevant in situ measurements conducted by the most recent satellite missions, as well as ground-based optical and radar observations to verify the conclusions and analysis. Including several case studies of observations related to prominent geospacer events, the book also provides experimental and numerical results throughout the chapters to further enhance understanding of how the same physical mechanisms produce different phenomena at different regions of the near-Earth space environment. Additionally, the comprehensive description of mechanisms responsible for space weather effects will give readers a broad foundation of wave and particle processes in the near-Earth magnetosphere. As such, Nonlinear Wave and Plasma Structures in the Auroral and Subauroral Geospace Nonlinear Wave and Plasma Structures in the Auroral and Subauroral Geospace is a cutting-edge reference for space physicists looking to better understand plasma physics in geospace. Presents a unified approach to wave and particle phenomena occurring in the auroral and subauroral geospace Summarizes the most current theoretical concepts related to the generation of the large-scale electric field near the plasmapause by flows of hot plasma from the reconnection site Includes case studies of the observations related to the most “famous events during the last 20 years as well as a large number of experimental and numerical results illustrated throughout the text
Annales Geophysicae 2001
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Author :
language : en
Publisher:
Release Date : 2005
Annales Geophysicae 2001 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Astrophysics categories.
Linear And Nonlinear Wave Propagation
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Author : Spencer P Kuo
language : en
Publisher: World Scientific
Release Date : 2021-04-16
Linear And Nonlinear Wave Propagation written by Spencer P Kuo and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-16 with Science categories.
Waves are essential phenomena in most scientific and engineering disciplines, such as electromagnetism and optics, and different mechanics including fluid, solid, structural, quantum, etc. They appear in linear and nonlinear systems. Some can be observed directly and others are not. The features of the waves are usually described by solutions to either linear or nonlinear partial differential equations, which are fundamental to the students and researchers.Generic equations, describing wave and pulse propagation in linear and nonlinear systems, are introduced and analyzed as initial/boundary value problems. These systems cover the general properties of non-dispersive and dispersive, uniform and non-uniform, with/without dissipations. Methods of analyses are introduced and illustrated with analytical solutions. Wave-wave and wave-particle interactions ascribed to the nonlinearity of media (such as plasma) are discussed in the final chapter.This interdisciplinary textbook is essential reading for anyone in above mentioned disciplines. It was prepared to provide students with an understanding of waves and methods of solving wave propagation problems. The presentation is self-contained and should be read without difficulty by those who have adequate preparation in classic mechanics. The selection of topics and the focus given to each provide essential materials for a lecturer to cover the bases in a linear/nonlinear wave course.
Active Experiments In Space Past Present And Future
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Author : Gian Luca Delzanno
language : en
Publisher: Frontiers Media SA
Release Date : 2020-07-10
Active Experiments In Space Past Present And Future written by Gian Luca Delzanno and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-10 with categories.
Opportunities For High Power High Frequency Transmitters To Advance Ionospheric Thermospheric Research
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Author : National Research Council (U.S.)
language : en
Publisher:
Release Date :
Opportunities For High Power High Frequency Transmitters To Advance Ionospheric Thermospheric Research written by National Research Council (U.S.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Ionosphere categories.
The Earth S Ionosphere
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Author : Michael Kelly
language : en
Publisher: Elsevier
Release Date : 2012-12-02
The Earth S Ionosphere written by Michael Kelly and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Science categories.
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.
Ionospheric Tomography
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Author : Viacheslav E. Kunitsyn
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Ionospheric Tomography written by Viacheslav E. Kunitsyn and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Science categories.
Authored by leading international researchers, this monograph introduces and reviews developed tomograhic methods for discovering 2D and 3D structures of the ionosphere, and discusses the experimental implementation of these methods. The detailed derivations and explanations make this book an excellent starting point for non-specialists.
Homogeneous Turbulence Dynamics
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Author : Pierre Sagaut
language : en
Publisher: Springer
Release Date : 2018-03-23
Homogeneous Turbulence Dynamics written by Pierre Sagaut and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-03-23 with Science categories.
This book provides state-of-the-art results and theories in homogeneous turbulence, including anisotropy and compressibility effects with extension to quantum turbulence, magneto-hydodynamic turbulence and turbulence in non-newtonian fluids. Each chapter is devoted to a given type of interaction (strain, rotation, shear, etc.), and presents and compares experimental data, numerical results, analysis of the Reynolds stress budget equations and advanced multipoint spectral theories. The role of both linear and non-linear mechanisms is emphasized. The link between the statistical properties and the dynamics of coherent structures is also addressed. Despite its restriction to homogeneous turbulence, the book is of interest to all people working in turbulence, since the basic physical mechanisms which are present in all turbulent flows are explained. The reader will find a unified presentation of the results and a clear presentation of existing controversies. Special attention is given to bridge the results obtained in different research communities. Mathematical tools and advanced physical models are detailed in dedicated chapters.
Electromagnetic Interference Impact Of The Proposed Emitters For The High Frequency Active Auroral Research Program Haarp
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Author : Gregory Alan Robertshaw
language : en
Publisher:
Release Date : 1993
Electromagnetic Interference Impact Of The Proposed Emitters For The High Frequency Active Auroral Research Program Haarp written by Gregory Alan Robertshaw and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Electromagnetic interference categories.