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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 : 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:
Author : Earl E. Gossard
Publisher : Elsevier Science & Technology
ISBN 13 :
Total Pages : 484 pages
Book Rating : 4.3/5 (91 download)
Download or read book Waves in the Atmosphere written by Earl E. Gossard and published by Elsevier Science & Technology. This book was released on 1975 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 : Allan D. Pierce
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (79 download)
Download or read book Propagation of Acoustic-gravity Waves from a Small Source Above the Ground in an Isothermal Atmosphere written by Allan D. Pierce and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 : 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 : Lam Tang
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (281 download)
Download or read book Propagation of Guided Acoustic Gravity Waves in a Turbulent Atmosphere written by Lam Tang and published by . This book was released on 1971 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jayaraman Srinivasan
Publisher :
ISBN 13 :
Total Pages : 126 pages
Book Rating : 4.F/5 ( download)
Download or read book The Effect of Ambient Vibrational Nonequilibrium on the Propagation of Acoustic-gravity Waves written by Jayaraman Srinivasan and published by . This book was released on 1974 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is a theoretical study of the effect of ambient vibrational nonequilibrium(vibrational or radiative) on the propagation of acoustic and gravity waves in a gas. In the propagation of such waves, nonequilibrium phenomena can manifest themselves in two distinct ways. This follows from the fact that nonequilibrium can exist in either(or both) the ambient and perturbed states of the gas. It is well known that perturbation nonequilibrium always contribute to damping of the waves. The lesser known effects of ambient nonequilibrium are examined here from the point of view of macroscopic gas dynamics. The physical insight obtained in a one-dimensional analysis is applied to the study of the probable effect of vibrational nonequilibrium(ambient and perturbation) on the propagation of acoustic-gravity waves in Earth's upper atmosphere.
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 :
Publisher :
ISBN 13 :
Total Pages : 46 pages
Book Rating : 4.:/5 (227 download)
Download or read book PROPAGATION OF ACOUSTIC-GRAVITY WAVES IN A TEMPERATURE-AND WIND-STRATIFIED ATMOSPHERE. written by and published by . This book was released on 1964 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: A theory is presented which permits the study of the effects of horizontal winds on the dispersion and amplitudes of acoustic-gravity waves in the atmosphere. It is shown that the effective horizontal group velocity for a given frequency in a given normal mode depends on direction of propagation as well as on frequency and that it is not necessarily in the same direction as the horizontal wave number vector. A number of useful integral theorems are derived from a variational principle and one is subsequently applied to the development of a perturbation method for the computation of wind effects on dispersion. Application of the method to a realistic example indicates that winds can appreciably alter the dispersion of the normal modes and that they should be considered in any quantitative interpretation of experimental microbarograms.
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 : Hernan A. Montes
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (227 download)
Download or read book Propagation of Long Period Acoustic Gravity Waves in the Atmosphere written by Hernan A. Montes and published by . This book was released on 1972 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric wave data from a multisensor array have been analyzed. It was found that Saturn Apollo launches generate acoustic gravity waves which propagate in the upper atmosphere and induce phase-path fluctuations. The dispersion study of a TID event has been used to illustrate the possibility of deriving neutral atmospheric structure from such type studies. The use of a parametric model to describe the power spectra of the phase-path fluctuations was investigated. (Author).
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 : 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 : Allan D. Pierce
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.:/5 (79 download)
Download or read book Propagation of Acoustic-gravity Waves from a Small Source Above the Ground in an Isothermal Atmosphere written by Allan D. Pierce and published by . This book was released on 1963 with total page 70 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:
