Results 1 to 10 of about 384,878 (250)

Role of Wind Filtering and Unbalanced Flow Generation in Middle Atmosphere Gravity Wave Activity at Chatanika Alaska

open access: yesAtmosphere, 2017
The meteorological control of gravity wave activity through filtering by winds and generation by spontaneous adjustment of unbalanced flows is investigated.
Colin C. Triplett   +4 more
doaj   +1 more source

Study on the layered dusty plasma structures in the summer polar mesopause [PDF]

open access: yesAnnales Geophysicae, 2010
Traditional hydrodynamic equations are adopted to build a one-dimensional theoretical model to study the effect of gravity wave on layered dusty plasma structures formation and evolution near the polar summer mesospause region associated with polar ...
Hui Li   +4 more
doaj   +1 more source

Estimation of orographically induced wave drag in the stable boundary layer during the CASES-99 experimental campaign [PDF]

open access: yes, 2009
This paper addresses the quantification of gravity wave drag due to small hills in the stable boundary layer. A single column atmospheric model is used to forecast wind and temperature profiles in the boundary layer.
Holtslag, A.A.M.   +2 more
core   +3 more sources

Gravity waves from instantons [PDF]

open access: yesPhysical Review D, 2000
We perform a first principles computation of the spectrum of gravity waves produced in open inflationary universes. The background spacetime is taken to be the continuation of an instanton saddle point of the Euclidean no boundary path integral. The two-point tensor correlator is computed directly from the path integral and is shown to be unique and ...
Hertog, Thomas, Turok, Neil
openaire   +2 more sources

Observations of in-situ generated gravity waves during a stratospheric temperature enhancement (STE) event [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
Evidence for in situ generated atmospheric gravity waves associated with a stratospheric temperature enhancement (STE) are presented. The signatures of two sets of gravity waves are observed by molecular-aerosol lidar in conjunction with the early ...
A. J. Gerrard   +2 more
doaj   +1 more source

Hunting for gravity waves in non-orographic winter storms using 3+ years of regional surface air pressure network and radar observations [PDF]

open access: yesAtmospheric Chemistry and Physics
Atmospheric gravity waves (i.e., buoyancy waves) can occur within stable layers when vertical oscillations are triggered by localized heating, flow over terrain, or imbalances in upper-level flow.
L. R. Allen   +6 more
doaj   +1 more source

Gravity waves in severe weather [PDF]

open access: yes, 1986
With a view to determining the role of severe weather in producing gravity waves, two tests were made. In the first, the wind speed measured at two nearby radiosonde stations, Peoria and Salem, was correlated with the stratosphere gravity-wave intensity ...
Bowhill, S. A., Gnanalingam, S.
core   +1 more source

Strong gravity signatures in the polarization of gravitational waves

open access: yes, 2019
General Relativity is a hugely successful description of gravitation. However, both theory and observations suggest that General Relativity might have significant classical and quantum corrections in the Strong Gravity regime.
Shankaranarayanan, S.
core   +1 more source

Three Dimensional Flexural–Gravity Waves [PDF]

open access: yesStudies in Applied Mathematics, 2013
Waves propagating on the surface of a three–dimensional ideal fluid of arbitrary depth bounded above by an elastic sheet that resists flexing are considered in the small amplitude modulational asymptotic limit. A Benney–Roskes–Davey–Stewartson model is derived, and we find that fully localized wavepacket solitary waves (or lumps) may bifurcate from the
Milewski, P. A., Wang, Z.
openaire   +2 more sources

Evidence of a saturated gravity-wave spectrum throughout the atmosphere [PDF]

open access: yes, 1986
The view adapted here is that the dominant mesoscale motions are due to internal gravity waves and show that previous and new vertical wave number spectra of horizontal winds are consistent with the notion of a saturation limit on wave amplitudes.
Fritts, D. C., Smith, S. A.
core   +1 more source

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