Results 31 to 40 of about 56,536 (266)

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

open access: yesComplexity, 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

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

open access: yesAnnales 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   +7 more
doaj   +1 more source

Impacts of acoustic and gravity waves on the ionosphere

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The impact of regional-scale neutral atmospheric waves has been demonstrated to have profound effects on the ionosphere, but the circumstances under which they generate ionospheric disturbances and seed plasma instabilities are not well understood ...
Kate Zawdie   +18 more
doaj   +1 more source

Microbarograph Observation of Acoustic Gravity Waves [PDF]

open access: yesNature, 1970
MAY I comment on the recent letter in Nature by Murty and Curry1 on microbarographic observation of acoustic gravity waves.
openaire   +2 more sources

Quadratic curvature terms and deformed Schwarzschild–de Sitter black hole analogues in the laboratory

open access: yesPhysics Letters B, 2017
Sound waves on a fluid stream, in a de Laval nozzle, are shown to correspond to quasinormal modes emitted by black holes that are physical solutions in a quadratic curvature gravity with cosmological constant.
R. da Rocha, R.F. Sobreiro, A.A. Tomaz
doaj   +1 more source

Nonlinear interaction of gravity and acoustic waves

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography, 2020
Here we have investigated the possibility of an inertio-acoustic wave-mode to be unstable with regards to gravity mode perturbations through non-linear triad interactions in the context of a shallow non-hydrostatic model.
André Seiji Wakate Teruya   +1 more
doaj   +1 more source

Dissipation of acoustic-gravity waves: An asymptotic approach [PDF]

open access: yesThe Journal of the Acoustical Society of America, 2014
Acoustic-gravity waves in the middle and upper atmosphere and long-range propagation of infrasound are strongly affected by air viscosity and thermal conductivity. To characterize the wave dissipation, it is typical to consider idealized environments, which admit plane-wave solutions. Here, an asymptotic approach is developed that relies instead on the
openaire   +2 more sources

Theoretical mass sensitivity of Love wave and layer guided acoustic plate mode sensors [PDF]

open access: yes, 2002
A model for the mass sensitivity of Love wave and layer guided shear horizontal acoustic plate mode (SH–APM) sensors is developed by considering the propagation of shear horizontally polarized acoustic waves in a three layer system. A dispersion equation
Newton, Michael   +8 more
core   +1 more source

Time-Reversal Analogy by Nonlinear Acoustic–Gravity Wave Triad Resonance

open access: yesFluids, 2019
Time reversal of free-surface water (gravity) waves due to a sudden change in the effective gravity has been extensively studied in recent years. Here, we show that an analogy to time-reversal can be obtained using nonlinear acoustic-gravity wave theory.
Usama Kadri
doaj   +1 more source

Statistics of surface gravity wave turbulence in the space and time domains [PDF]

open access: yes, 2010
We present experimental results on simultaneous space–time measurements for the gravity wave turbulence in a large laboratory flume. We compare these results with predictions of the weak turbulence theory (WTT) based on random waves, as well as with ...
Nazarenko, Sergey   +3 more
core   +1 more source

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