Results 181 to 190 of about 1,660,853 (215)

Peculiarities of Acoustic-Gravity Waves in Inhomogeneous Flows of the Polar Thermosphere

Journal of Atmospheric and Solar-Terrestrial Physics, 2018
The peculiarities of acoustic-gravity waves propagating in inhomogeneous polar thermosphere flows have been investigated. It is shown that a spectrum filtration and a change in amplitudes of acoustic-gravity waves occur in the region of polar ...
Yuri Yampolski, E I Kryuchkov, O K Cheremnykh   +2 more
exaly   +2 more sources

On the steady-state resonant acoustic–gravity waves

Journal of Fluid Mechanics, 2018
The steady-state interaction of acoustic–gravity waves in an ocean of uniform depth is researched theoretically by means of the homotopy analysis method (HAM), an analytic approximation method for nonlinear problems.
Xiaoyan Yang, F. Dias, S. Liao
semanticscholar   +2 more sources

Deep Ocean Water Transport by Acoustic-Gravity Waves

Journal of Geophysical Research: Oceans, 2014
Acoustic-gravity waves are compression-type waves propagating with amplitudes governed by the restoring force of gravity. They are generated, among others, by wind-wave interactions, surface waves interactions, and submarine earthquakes.
Usama Kadri
exaly   +2 more sources

Generation of an acoustic-gravity wave by two gravity waves, and their subsequent mutual interaction

Journal of Fluid Mechanics, 2013
The nonlinear triad interaction of two opposing gravity waves with almost identical frequencies and one much longer acoustic-gravity wave is studied for non-resonance, as well as for exact resonance conditions. For non-resonance conditions the previously
U. Kadri, M. Stiassnie
semanticscholar   +2 more sources

Triad Resonance Between a Surface-Gravity Wave and Two High Frequency Hydro-Acoustic Waves

European Journal of Mechanics, B/Fluids, 2016
A new class of resonant triad in the family of gravity–acoustic waves has been found. I show that a hydro-acoustic wave interacting with a surface-gravity wave may generate a second hydro-acoustic wave.
Usama Kadri
exaly   +2 more sources

Thermospheric disturbances caused by the propagation of acoustic-gravity waves from the lower atmosphere during a solar eclipse

, 2021
The paper studies disturbances of the upper thermosphere caused by the vertical propagation of acoustic-gravity waves (AGW) from the lower atmosphere during the solar eclipse on March 20, 2015. The experimentally obtained data on pressure variations near
Y. Kurdyaeva, O. Borchevkina, I. Karpov, S. Kshevetskii   +3 more
semanticscholar   +1 more source

Diffraction of Acoustic-Gravity Waves in the Presence of a Turning Point

Journal of the Acoustical Society of America, 2016
Oleg A. Godin
exaly   +2 more sources

Thermal effects of nonlinear acoustic-gravity waves propagating at thermospheric temperatures matching high and low solar activity

, 2020
Numerical high-resolution modeling of nonlinear acoustic-gravity waves (AGWs) generated at the Earth's surface and propagating to the thermosphere shows that wave characteristics are depending on modifications in the mean density, temperature, molecular ...
N. Gavrilov, S. Kshevetskii, A. Koval
semanticscholar   +1 more source

Simulation of Acoustic‐Gravity Waves Generated by an Earthquake and Explanation of the Ionospheric Disturbance Observed During 2023 M 7.7 Turkey Earthquake

Journal of Geophysical Research - Space Physics
We present a semi‐analytic method that allows efficiently simulating acoustic‐gravity waves (AGWs) excited by an earthquake source in a stratified lithosphere‐atmosphere model. First, we introduce the surface harmonic vectors to transform the atmospheric
Ting Li, Yong-Xin Gao, Chieh-Hung Chen, Yang-Yi Sun, Xue-Min Zhang, J. Chum, Guanqun Zhou, J. Wen, Xiaofei Chen   +8 more
semanticscholar   +1 more source

Dissipation of acoustic–gravity waves in the Earth’s thermosphere

, 2020
The dissipation of acoustic–gravity waves in the thermosphere due to molecular viscosity and thermal conductivity based on a modified system of hydrodynamic equations is studied.
A. Fedorenko, E. Kryuchkov, O. Cheremnykh, Y. Selivanov   +3 more
semanticscholar   +1 more source