Results 11 to 20 of about 56,536 (266)
On resonant triad interactions of acoustic–gravity waves [PDF]
Journal of Fluid Mechanics, 2015 The propagation of wave disturbances in water of uniform depth is discussed, accounting for both gravity and compressibility effects. In the linear theory, free-surface (gravity) waves are virtually decoupled from acoustic (compression) waves, because the speed of sound in water far exceeds the maximum phase speed of gravity waves.
Kadri, Usama, Akylas, Triantaphyllos R.
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Acoustic–gravity waves from multi-fault rupture [PDF]
Journal of Fluid Mechanics, 2021 Abstract
Byron Williams +2 more
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Nonlinear interaction between acoustic gravity waves
Annales GeophysicaeThe resonant interaction between three acoustic gravity waves is considered. We improve on the results of previous authors and write the new coupling coefficients in a symmetric form. Particular attention is paid to the low-frequency limit.
P. Axelsson, J. Larsson, L. Stenflo
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La Soufriere Volcanic Eruptions Launched Gravity Waves Into Space [PDF]
, 2022 Atmospheric gravity waves can be excited by explosive volcanic eruptions and may reach Earth's upper atmosphere. In this study, we report on mesoscale concentric gravity waves observed in the mesopause airglow layer following the La Soufriere volcano ...
Kahn, Ralph +13 more
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Large-scale numerical modeling of hydro-acoustic waves generated by tsunamigenic earthquakes [PDF]
Natural Hazards and Earth System Sciences, 2015 Tsunamigenic fast movements of the seabed generate pressure waves in weakly compressible seawater, namely hydro-acoustic waves, which travel at the sound celerity in water (about 1500 m s−1).
C. Cecioni +3 more
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Spectral properties of acoustic gravity wave turbulence [PDF]
Journal of Geophysical Research: Atmospheres, 2008 The nonlinear turbulent interactions between acoustic gravity waves are investigated using two‐dimensional nonlinear fluid simulations. The acoustic gravity waves consist of velocity and density perturbations and propagate across the density gradients in the vertical direction in the Earth's atmosphere.
Shaikh, Dastgeer +2 more
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Acoustic gravity wave growth and damping in convecting plasma [PDF]
Annales Geophysicae, 1994 The propagation of acoustic gravity waves through steadily convecting plasma in the thermosphere has been analysed theoretically. The growth and damping rates of internal gravity waves due to the feedback effects of wave-modulated Joule heating and ...
T. R. Robinson
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Internal Acoustic Gravity Waves [PDF]
Zeitschrift für Naturforschung A, 1968 An exhaustive analysis of wave motion in a compressible isothermal medium under the influence of gravity is presented. The dispersion relation governing the wave propagation is derived from the linearized equations of fluid dynamics and thermodynamics, and it is arranged in a nondimensional form.
Alden Mclellan, F. Winterberg
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Atmospheric resonances and their coupling to vibrations of the ground and waves in the ocean
Earth, Planets and Space, 2020 Observations of the ionosphere with the airglow, GPS-TEC, and HF radar techniques reveal a resonant response of the middle and upper atmosphere to broad-band excitation by earthquakes, volcano eruptions, and convective storms.
Oleg A. Godin +2 more
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Ground-based acoustic parametric generator impact on the atmosphere and ionosphere in an active experiment [PDF]
Annales Geophysicae, 2017 We develop theoretical basics of active experiments with two beams of acoustic waves, radiated by a ground-based sound generator. These beams are transformed into atmospheric acoustic gravity waves (AGWs), which have parameters that enable them to ...
Y. G. Rapoport +14 more
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