Results 21 to 30 of about 1,660,853 (215)

GNSS TEC‐Based Detection and Analysis of Acoustic‐Gravity Waves From the 2012 Sumatra Double Earthquake Sequence

open access: yesJournal of Geophysical Research - Space Physics, 2021
The Wharton Basin earthquake sequence on April 11, 2012, offshore Sumatra, represents the two largest (Mw > 8.0) strike‐slip earthquakes ever recorded.
Sarthak Srivastava   +3 more
semanticscholar   +1 more source

Nonlinear interaction between acoustic gravity waves [PDF]

open access: yesAnnales Geophysicae, 1996
The 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
doaj   +1 more source

Isolating the Source Region of Infrasound Travel Time Variability Using Acoustic Sensors on High-Altitude Balloons

open access: yesRemote Sensing, 2023
High-altitude balloons carrying infrasound sensor payloads can be leveraged toward monitoring efforts to provide some advantages over other sensing modalities.
Elizabeth A. Silber, Daniel C. Bowman
doaj   +1 more source

Large-scale numerical modeling of hydro-acoustic waves generated by tsunamigenic earthquakes [PDF]

open access: yesNatural 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
doaj   +1 more source

Decay times of atmospheric acoustic-gravity waves after deactivation of wave forcing

open access: yesAtmospheric Chemistry and Physics, 2021
. High-resolution numerical simulations of non-stationary nonlinear acoustic-gravity waves (AGWs) propagating upwards from surface wave sources are performed for different temporal intervals relative to activation/deactivation times of the wave forcing ...
N. Gavrilov, S. Kshevetskii, A. Koval
semanticscholar   +1 more source

Acoustic gravity wave growth and damping in convecting plasma [PDF]

open access: yesAnnales 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
doaj   +1 more source

Approximate solution of nonlinear triad interactions of acoustic-gravity waves in cylindrical coordinates

open access: yesCommunications in nonlinear science & numerical simulation, 2021
The three-dimensional radial propagation of wave disturbances over a slightly compressible fluid of constant depth is discussed. We focus on resonant triads comprising two gravity modes and one acoustic mode.
U. Kadri, Zhan Wang
semanticscholar   +1 more source

Nonlinear acoustic-gravity waves [PDF]

open access: yes, 2009
Previous results on nonlinear acoustic-gravity waves are reconsidered. It turns out that the mathematical techniques used are somewhat similar to those already adopted by the plasma physics community. Consequently, a future interaction between physicists
Stenflo, L.   +6 more
core   +3 more sources

Atmospheric resonances and their coupling to vibrations of the ground and waves in the ocean

open access: yesEarth, 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
doaj   +1 more source

Ground-based acoustic parametric generator impact on the atmosphere and ionosphere in an active experiment [PDF]

open access: yesAnnales 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
doaj   +1 more source

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