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Instabilities in internal gravity waves

open access: yesMathematics in Engineering, 2023
Internal gravity waves are propagating disturbances in stably stratified fluids, and can transport momentum and energy over large spatial extents. From a fundamental viewpoint, internal waves are interesting due to the nature of their dispersion relation,
Dheeraj Varma   +2 more
doaj   +1 more source

Low-frequency Internal Gravity Waves Are Pseudo-incompressible

open access: yesThe Astrophysical Journal, 2023
Starting from the fully compressible fluid equations in a plane-parallel atmosphere, we demonstrate that linear internal gravity waves are naturally pseudo-incompressible in the limit that the wave frequency ω is much less than that of surface gravity ...
Bradley W. Hindman, Keith Julien
doaj   +1 more source

Oceanic Internal Waves and Internal Tides in the East Asian Marginal Seas

open access: yesJournal of Marine Science and Engineering, 2022
Inertia-gravity waves or internal waves (IWs) are ubiquitous in the stratified, rotating ocean [...]
Sunghyun Nam, Xueen Chen
doaj   +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

The effect of internal gravity waves on cloud evolution in sub-stellar atmospheres [PDF]

open access: yes, 2020
Context. Sub-stellar objects exhibit photometric variability which is believed to be caused by a number of processes such as magnetically-driven spots or inhomogeneous cloud coverage.
Falconer, R. E.   +4 more
core   +5 more sources

Thin-shell Tidal Dynamics of Ocean Worlds

open access: yesThe Planetary Science Journal, 2023
Several solar system moons harbor subsurface water oceans; extreme internal heating or solar irradiation can form magma oceans in terrestrial bodies. Tidal forces drive ocean currents, producing tidal heating that affects the thermal−orbital evolution of
Marc Rovira-Navarro   +2 more
doaj   +1 more source

Gravity waves excited during a minor sudden stratospheric warming [PDF]

open access: yesAtmospheric Chemistry and Physics, 2018
An exceptionally deep upper-air sounding launched from Kiruna airport (67.82° N, 20.33° E) on 30 January 2016 stimulated the current investigation of internal gravity waves excited during a minor sudden stratospheric warming (SSW) in the
A. Dörnbrack   +10 more
doaj   +1 more source

Distribution and Evolution of the Li Abundance in Red Clump Stars Can Be Explained by Internal Gravity Waves

open access: yesThe Astrophysical Journal, 2023
The study of Li phenomena in red clump (RC) stars can give us a deeper understanding of the structure and evolution of stars. Chanamé et al. explained the RC Li abundance distributions naturally using only standard post-main-sequence (MS) Li evolution ...
Xue-Feng Li   +4 more
doaj   +1 more source

Characterizing the propagation of gravity waves in 3D nonlinear simulations of solar-like stars [PDF]

open access: yes, 2015
The revolution of helio- and asteroseismology provides access to the detailed properties of stellar interiors by studying the star's oscillation modes.
Alvan, L.   +4 more
core   +9 more sources

Spectra of Acoustic-Gravity Waves in the Atmosphere with a Quasi-Isothermal Upper Layer

open access: yesAtmosphere, 2021
In this paper, we study, in theoretical terms, the structure of the spectrum of acoustic-gravity waves (AGWs) in the nonisothermal atmosphere having asymptotically constant temperature at high altitudes.
Sergey P. Kshevetskii   +2 more
doaj   +1 more source

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