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Author : Joe E. Thomas
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (59 download)
Download or read book An Investigation of Acoustic-gravity Wave Propagation in a Realistic Atmosphere written by Joe E. Thomas and published by . This book was released on 1970 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kung C. Yeh
Publisher :
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (227 download)
Download or read book Acoustic-gravity Waves in the Upper Atmosphere written by Kung C. Yeh and published by . This book was released on 1974 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report we review the theory of acoustic-gravity waves, the interaction of such waves with the ionosphere, the experimental support for the existence of such waves in the upper atmosphere, and the role played by acoustic-gravity waves in thermospheric dynamics. After a thorough discussion on the properties of acoustic-gravity waves in an ideal isothermal atmosphere, the effects produced by horizontal winds, sharp boundary discontinuities, and dissipative processes are discussed. These discussions are followed by reviewing propagation effects in a realistic atmosphere for both free waves and guided waves. The propagation of these acoustic-gravity waves in the upper atmosphere may induce changes in the ionosphere sometimes known as traveling disturbances. The existing experimental data on traveling disturbances are then reviewed and found consistent, in most cases, with the acoustic-gravity wave interpretation.
Author : Ahmad Talaei
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (983 download)
Download or read book On the Propagation of Atmospheric Gravity Waves in a Non-uniform Wind Field written by Ahmad Talaei and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric gravity waves play fundamental roles in a broad-range of dynamical processes extending throughout the Earth0́9s neutral atmosphere and ionosphere. In this paper, we present a modified form for the acoustic-gravity wave equation and its dispersion relationships for a compressible and non-stationary atmosphere in hydrostatic balance. Importantly, the solutions have been achieved without the use of the well-known Boussinesq approximation which have been used extensively in previous studies. We utilize the complete set of governing equations for a compressible atmosphere with non-uniform airflows to determine an equation for vertical velocity of possible atmospheric waves. This intricate wave equation is simplified by a proper substitution producing a useful new wave-like equation for acoustic-gravity waves. The substitution introduces a term omega (intrinsic frequency) in the amplitude of the wave solution for the vertical velocity of acoustic-gravity waves. This term may play a significant role in directional filtering of atmospheric waves in realistic atmospheres exhibiting strong and highly variable winds. It is also proven that the only difference in the wave equation of compressible fluid when non-uniform wind is added to the equations of motion is the term with second derivative of Ln(omega) with respect to height. These new solutions may be particularly important for improved gravity wave propagation studies in the upper mesosphere and thermosphere/ionosphere regions.
Author : Stanford University. Stanford Electronics Laboratories
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.F/5 ( download)
Download or read book Acoustic-gravity Waves in the Atmosphere written by Stanford University. Stanford Electronics Laboratories and published by . This book was released on 1965 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research was to obtain a panoramic view of acoustic-gravity-wave motions throughout the atmosphere. A one-dimensional array of particles and springs, conceived by Newton to study sound waves in the atmosphere, was extended to two dimensions by means of 1500 particles interconnected by springs. Variations of density and pressure with altitude are represented by variations in mass and spring constants. This new model has provided means by which acoustic-gravity-wave motions in the atmosphere are solved on a high-speed digital computer, and a new animated-computer-output technique is used. A motion picture--automatically plotted by the computer, a frame at a time--provides greater detail and perspective of mechanical wave motions in the atmosphere than has ever been obtainable before. Ground-level and 100-km-high explosions were investigated with this computer model, and the resulting transient motions of the atmosphere were displayed by means of a motion picture produced by digital techniques. Computed ground-level barograms resulting from a ground-level explosion compare well with experimental barograms recorded during ground-level nuclear explosions. (Author).
Author : United States. Environmental Science Services Administration
Publisher :
ISBN 13 :
Total Pages : 462 pages
Book Rating : 4.3/5 (91 download)
Download or read book Acoustic-gravity Waves in the Atmosphere written by United States. Environmental Science Services Administration and published by . This book was released on 1968 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard L. Pfeffer
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (32 download)
Download or read book A Multi - Layer Model for the Study of Acoustic - Gravity Wave Propagation in the Earth's Atmosphere written by Richard L. Pfeffer and published by . This book was released on 1962 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard L. Pfeffer
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (32 download)
Download or read book Acoustic Gravity Wave Propagation in an Atmosphere with Two Sound Channels written by Richard L. Pfeffer and published by . This book was released on 1962 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : George Fulton Koehler
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.:/5 (239 download)
Download or read book Non-linear Acoustic-gravity Wave Propagation in the Atmosphere written by George Fulton Koehler and published by . This book was released on 1975 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nambath Krishnan Balachandran
Publisher :
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.:/5 (817 download)
Download or read book Propagation of Acoustic-gravity Waves in the Atmosphere written by Nambath Krishnan Balachandran and published by . This book was released on 1968 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (France)
Publisher :
ISBN 13 :
Total Pages : 523 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effects of Atmospheric Acoustic Gravity Waves on Electromagnetic Wave Propagation written by ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (France) and published by . This book was released on 1972 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the Symposium was to convene Specialists in Physics of the atmosphere engaged in the study of energy transfers in the form of waves in a neutral medium and Specialists in Electromagnetic Wave Propagation concerned with the corresponding modifications of the electric characteristics of the medium and their effects on Electromagnetic Waves. The program has been divided in five sessions: Acoustic gravity waves in the neutral terrestrial atmosphere; Coupling between the ionized atmosphere and the neutral atmosphere disturbed by acoustic gravity waves; Radio electric studies on acoustic gravity waves in the neutral and ionized atmosphere; Influence of acoustic gravity waves on the propagation of electromagnetic waves; Summaries recommendations and future investigations.
Author : Richard L. Pfeffer
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (295 download)
Download or read book Acoustic-Gravity Wave Propagation from Nuclear Explosions in the Earth's Atmosphere written by Richard L. Pfeffer and published by . This book was released on 1962 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nayar K. Balachandran
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (32 download)
Download or read book Acoustic-Gravity Wave Propagation in a Temperature - and Wind-Stratified Atmosphere written by Nayar K. Balachandran and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Publisher :
ISBN 13 :
Total Pages : 542 pages
Book Rating : 4.:/5 (11 download)
Download or read book Effects of Atmospheric Acoustic Gravity Waves on Electromagnetic Wave Propagation written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1972 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (2 download)
Download or read book Scientific Report ..., Dynamic Meteorology Project written by and published by . This book was released on 1960 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard L. Pfeffer
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (295 download)
Download or read book Acoustic-gravity Wave Propagation from Nuclear Explosions in the Earth's Atmosphere written by Richard L. Pfeffer and published by . This book was released on 1961 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722340544
Total Pages : 40 pages
Book Rating : 4.3/5 (45 download)
Download or read book Linear and Nonlinear Acoustic Wave Propagation in the Atmosphere written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-05 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The investigation of the acoustic wave propagation theory and numerical implementation for the situation of an isothermal atmosphere is described. A one-dimensional model to validate an asymptotic theory and a 3-D situation to relate to a realistic situation are considered. In addition, nonlinear wave propagation and the numerical treatment are included. It is known that the gravitational effects play a crucial role in the low frequency acoustic wave propagation. They propagate large distances and, as such, the numerical treatment of those problems become difficult in terms of posing boundary conditions which are valid for all frequencies. Hariharan, S. I. and Yu, Ping Unspecified Center NAG1-624; RTOP 505-61-11-02...
Author : Andrew Peter Tilbrook
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (54 download)
Download or read book The Propagation of Acoustic Gravity Waves in the Atmosphere written by Andrew Peter Tilbrook and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
