Results 31 to 40 of about 44,233 (308)

A proposal for a Bohmian ontology of quantum gravity [PDF]

open access: yes, 2013
The paper shows how the Bohmian approach to quantum physics can be applied to develop a clear and coherent ontology of non-perturbative quantum gravity.
Michael Esfeldy   +7 more
core   +1 more source

Accelerating Atmospheric Gravity Wave Simulations Using Machine Learning: Kelvin‐Helmholtz Instability and Mountain Wave Sources Driving Gravity Wave Breaking and Secondary Gravity Wave Generation

open access: yesGeophysical Research Letters, 2023
Gravity waves (GWs) and their associated multi‐scale dynamics are known to play fundamental roles in energy and momentum transport and deposition processes throughout the atmosphere.
Wenjun Dong   +5 more
doaj   +1 more source

Quadratic Theory of Gravity with a Scalar Field and Type I Shapovalov Wave Spacetimes

open access: yesUniverse, 2022
For the quadratic theory of gravity with a scalar field, exact solutions are found for gravitational-wave models in Shapovalov I-type spacetimes, which do not arise in models of the general theory of relativity.
Konstantin Osetrin   +2 more
doaj   +1 more source

Gravity wave watching [PDF]

open access: yesThe Astrophysical Journal, 1994
It is suggested that gravity waves could, in several cases, be detected by means of already (or shortly to be) available technology, independently of current efforts of detection. The present is a follow-up on a recently suggested detection strategy based on gravity-wave-induced deviations of null geodesics.
openaire   +2 more sources

On Rayleigh wave field induced by surface stresses under the effect of gravity [PDF]

open access: yes, 2022
The paper is concerned with development of the asymptotic formulation for surface wave field induced by vertical surface stress under the effect of gravity in the short-wave region. The approach relies on the methodology of hyperbolic-elliptic models for
Mubaraki, Ali, Prikazchikov, Danila
core   +1 more source

Long-term lidar observations of wintertime gravity wave activity over northern Sweden [PDF]

open access: yesAnnales Geophysicae, 2014
This paper presents an analysis of gravity wave activity over northern Sweden as deduced from 18 years of wintertime lidar measurements at Esrange (68° N, 21° E).
B. Ehard   +4 more
doaj   +1 more source

THEORY OF GRAVITY "ENERGY-WAVE": THE ORIGIN [PDF]

open access: yes, 2014
In this paper I derive an equation relating the gravitational acceleration with the gravitational wavelength corresponding to the “gravitational energy” density at a point in space and with the speed of light, without using the gravitational constant of ...
Rodolfo Sergio González Castro   +1 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

Intercomparison of stratospheric gravity wave observations with AIRS and IASI [PDF]

open access: yesAtmospheric Measurement Techniques, 2014
Gravity waves are an important driver for the atmospheric circulation and have substantial impact on weather and climate. Satellite instruments offer excellent opportunities to study gravity waves on a global scale.
L. Hoffmann   +6 more
doaj   +1 more source

ON INTERNAL GRAVITY WAVES

open access: yesTamkang Journal of Mathematics, 1998
We are concerned with the steady wave motions in a 2-fluid system with constant densities. This is a free boundary problem in which the lighter fluid is bounded above by a free surface and is separated from the heavier one down below by an interface. By using a contractive mapping principle type argument.
Sun, Tien-Yu, Chen, Kai-Hui
openaire   +3 more sources

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