Results 31 to 40 of about 1,660,853 (215)

Analysis of acoustic-gravity waves in the mesosphere using VLF radio signal measurements

, 2021
A simple method has been proposed to determine acoustic-gravity wave (AGW) characteristics at lower ionosphere (mesosphere) heights by measuring VLF radio signal amplitudes.
A. Fedorenko, E. Kryuchkov, O. Cheremnykh, A. D. Voitsekhovska, Y. Rapoport, Y. Klymenko   +5 more
semanticscholar   +1 more source

On the origin of medium-period ionospheric waves and their possible modelling: a short review

Annals of Geophysics, 1997
This article introduces the concept of ionospheric waves with periods from about 15 min to about 4 h as one of the acoustic-gravity wave-induced phenomena.
B. Zolesi, L. R. Cander, P. Dominici
doaj   +1 more source

Observation and simulation of atmospheric gravity waves exciting subsequent tsunami along the coastline of Japan after Tonga explosion event

Scientific Reports, 2022
Tsunamis are commonly generated by earthquakes beneath the ocean floor, volcanic eruptions, and landslides. The tsunami following the Tonga eruption of 2022 is believed to have been excited by atmospheric pressure fluctuations generated by the explosion ...
Yasuhiro Nishikawa, Masa-yuki Yamamoto, Kensuke Nakajima, Islam Hamama, Hiroaki Saito, Yoshihiro Kakinami, Masumi Yamada, Tung-Cheng Ho   +7 more
doaj   +1 more source

SATELLITE STUDIES OF IONOSPHERIC MANIFESTATIONS OF ACOUSTIC-GRAVITY WAVES

Radio Physics and Radio Astronomy, 2014
The response of the ionospheric plasma on the propagation of acoustic-gravity waves (AGW) studied at altitudes of 250 − 350 km using the satellite Dynamics Explorer 2 measurements. Wave perturbations are analyzed according to simultaneously measured data
A. V. Bespalova, A. K. Fedorenko
doaj   +1 more source

Acoustic-gravity modons in the atmosphere [PDF]

Annales Geophysicae, 1995
It is shown that the equations governing low-frequency acoustic-gravity waves in a stable stratified atmosphere can have localized dipole-vortex solutions (modons).
L. Stenflo, Y. A. Stepanyants
doaj   +1 more source

The Dynamics of Nonlinear Atmospheric Acoustic‐Gravity Waves Generated by Tsunamis Over Realistic Bathymetry

Journal of Geophysical Research - Space Physics, 2020
The investigation of atmospheric tsunamigenic acoustic and gravity wave (TAGW) dynamics, from the ocean surface to the thermosphere, is performed through the numerical computations of the 3D compressible nonlinear Navier‐Stokes equations.
P. Inchin, C. Heale, J. Snively, M. Zettergren   +3 more
semanticscholar   +1 more source

An Application of (3+1)-Dimensional Time-Space Fractional ZK Model to Analyze the Complex Dust Acoustic Waves

Complexity, 2019
Dust plasma is a new field of physics which has developed rapidly in recent decades. The study of dust plasma has received much attention due to its importance in the environment of space and the Earth.
Lei Fu, Hongwei Yang
doaj   +1 more source

Photospheric high-frequency acoustic power excess in sunspot umbra: signature of magneto-acoustic modes [PDF]

, 2013
We present observational evidence for the presence of MHD (magnetohydrodynamic) waves in the solar photosphere deduced from SOHO/MDI (Solar and Heliospheric Observatory/Michelson Doppler Imager) Dopplergram velocity observations.
Shelyag, S., Thompson, Michael John, Zharkov, Sergei, Zharkov, S., M. J. Thompson, Fedun, V., S. Zharkov, Shelyag, Sergiy, Erdélyi, Robert, R. Erdélyi, Erdelyi, R., S. Shelyag, V. Fedun, Fedun, Viktor, Thompson, M.J.   +14 more
core   +2 more sources

Propagation to the upper atmosphere of acoustic-gravity waves from atmospheric fronts in the Moscow region [PDF]

Annales Geophysicae, 2019
The paper uses experimental data of pressure variations on the Earth's surface during the passage of an atmospheric front recorded by a network of four microbarographs in the Moscow region.
Y. Kurdyaeva, Y. Kurdyaeva, S. Kulichkov, S. Kulichkov, S. Kshevetskii, O. Borchevkina, O. Borchevkina, E. Golikova   +7 more
doaj   +1 more source

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 ...
U. Kadri, T. Akylas
semanticscholar   +2 more sources