Results 21 to 30 of about 1,692,040 (291)

The impact of gravity waves rising from convection in the lower atmosphere on the generation and nonlinear evolution of equatorial bubble [PDF]

open access: yesAnnales Geophysicae, 2009
The nonlinear evolution of equatorial F-region plasma bubbles under varying ambient ionospheric conditions and gravity wave seeding perturbations in the bottomside F-layer is studied.
E. Alam Kherani   +5 more
doaj   +1 more source

Gravity waves in the Sun [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2005
We present numerical simulations of penetrative convection and gravity wave excitation in the Sun. Gravity waves are self-consistently generated by a convective zone overlying a radiative interior. We produce power spectra for gravity waves in the radiative region as well as estimates for the energy flux of gravity waves below the convection zone.
Rogers, Tamara M., Glatzmaier, Gary A.
openaire   +2 more sources

Retrieval of intrinsic mesospheric gravity wave parameters using lidar and airglow temperature and meteor radar wind data [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
We analyse gravity waves in the upper-mesosphere, lower-thermosphere region from high-resolution temperature variations measured by the Rayleigh lidar and OH temperature mapper.
R. Reichert   +9 more
doaj   +1 more source

Signature of gravity wave propagations from the troposphere to ionosphere [PDF]

open access: yesAnnales Geophysicae, 2022
We observed a gravity wave (GW) signature in the OH emission layer in the upper mesosphere, and 4 h later, a medium-scale travelling ionospheric disturbance (MSTID) in the OI 630 nm emission layer. Spectral analysis of the two waves showed that both have
H. Takahashi   +9 more
doaj   +1 more source

zllouc/Application-of-Orthogonal-Polynomial-Fitting-Method-to-Extract-Gravity-Wave-Signals-from-AIRS-Data-: V1.0

open access: yes, 2022
Application-of-OPF-Method-to-Gravity-Wave-from-AIRS Full Changelog: https://github.com/zllouc/Application-of-Orthogonal-Polynomial-Fitting-Method-to-Extract-Gravity-Wave-Signals-from-AIRS-Data-/commits/V1.
Zi-Liang Li (李子良)
core   +1 more source

Gravity waves in three dimensions [PDF]

open access: yesPhysical Review D, 2015
We find the explicit forms of the anti-de Sitter plane, anti-de Sitter spherical, and pp waves that solve both the linearized and exact field equations of the most general higher derivative gravity theory in three dimensions. As a sub-class, we work out the six derivative theory and the critical version of it where the masses of the two spin-2 ...
Gürses, M., Şişman, T.C., Tekin, B.
openaire   +5 more sources

Intercomparison of AIRS and HIRDLS stratospheric gravity wave observations [PDF]

open access: yesAtmospheric Measurement Techniques, 2018
We investigate stratospheric gravity wave observations by the Atmospheric InfraRed Sounder (AIRS) aboard NASA's Aqua satellite and the High Resolution Dynamics Limb Sounder (HIRDLS) aboard NASA's Aura satellite.
C. I. Meyer   +4 more
doaj   +1 more source

Intermittency of gravity wave potential energies and absolute momentum fluxes derived from infrared limb sounding satellite observations [PDF]

open access: yesAtmospheric Chemistry and Physics, 2022
Atmospheric gravity waves contribute significantly to the driving of the global atmospheric circulation. Because of their small spatial scales, their effect on the circulation is usually parameterized in general circulation models.
M. Ern, P. Preusse, M. Riese
doaj   +1 more source

Gravity wave turbulence in a laboratory flume [PDF]

open access: yes, 2007
We present an experimental study of the statistics of surface gravity wave turbulence in a flume of a horizontal size 12×6  m. For a wide range of amplitudes the wave energy spectrum was found to scale as Eω∼ω-ν in a frequency range of up to one decade ...
Nazarenko, Sergey   +2 more
core   +1 more source

Internal Gravity Waves [PDF]

open access: yes, 2019
The ocean's interior is filled with waves that can only exist because the ocean is vertically stratified in temperature and salinity. Like waves at the ocean surface, internal waves are restored by gravity. These internal gravity waves are generated by wind, tides, and low-frequency flows.
Buijsman, Maarten C.   +3 more
openaire   +2 more sources

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