Results 261 to 270 of about 6,674 (308)

The viscous damping of atmospheric gravity waves

Canadian Journal of Physics, 1963
Dissipation produced by viscous damping and thermal conduction is important in the study of atmospheric gravity waves, which are themselves important in a study of "irregular" motions in the upper atmosphere. The mathematics of this damping is considered in some detail here, and charts are given to assess the effects of viscous damping and thermal ...
Pitteway, M. L. V., Hines, C. O.
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Gravity waves in a realistic atmosphere

Journal of Geophysical Research, 1966
Internal atmospheric gravity waves in isothermal medium, solving hydrodynamic equations, determining wave propagation in realistic atmosphere for range of wave parameters, wind amplitude, reflected energy ...
J. E. Midgley, H. B. Liemohn
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Internal gravity waves in the atmosphere

Archiv für Meteorologie, Geophysik und Bioklimatologie Serie A, 1974
One of the shortcomings of at least those lee-wave theories which are mathematically tractable with relative ease, is that they do not satisfy the perturbation energy equation. In this report we started from a simplified energy equation and by parameterizing certain terms using plausible assumptions, we arrived at a solution of the primitive equations ...
Elmar R. Reiter, Bernhard Haurwitz
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Gravity Waves in the Atmosphere

Nature, 1972
Atmospheric gravity waves similar to waves that occur on the surface of a body of water have been known since the nineteenth century, but their significance for the study of atmospheric dynamics has been realized only in the past ten years.
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Climatology of Gravity Waves in the Middle Atmosphere

Journal of Atmospheric and Terrestrial Physics, 1984
Abstract An attempt is made at the statistical analysis of small-scale disturbances in the stratosphere and mesosphere with the aid of meteorological rocket observations at many stations from 77°N to 8°S for several years. By applying a high-pass filter to daily rocket data in the height range 20–65 km, wind and temperature fluctuations with ...
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Gravity waves in the atmosphere

Archiv für Meteorologie, Geophysik und Bioklimatologie Serie A, 1951
Mathematical discussion is restricted to gravity waves of period short enough for the earth's rotation to be neglected, propagated horizontally through air whose horizontal velocity and static stability vary with height in the layers near the ground.
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The generation and propagation of atmospheric gravity waves observed during the Worldwide Atmospheric Gravity-wave Study (WAGS)

Journal of Atmospheric and Terrestrial Physics, 1988
Abstract During the Worldwide Atmospheric Gravity-wave Study (WAGS) in October 1985, the EISCAT incoherent scatter radar was used to observe the generation of atmospheric gravity waves in the auroral zone in conjunction with a network of magnetometers and riometers. At the same time a chain of five ionosondes, an HF-Doppler system, a meteor radar and
Williams, P., Crowley, G., Schlegel, K., Virdi, T., McCrea, I., Watkins, G., Wade, N., Hargreaves, J., Lachlan-Cope, T., Muller, H., Baldwin, J., Warner, P., van Eyken, A., Hapgood, M., Rodger, A.   +14 more
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Gravity Waves in Titan's Atmosphere

Icarus, 1994
Scintillations (high frequency variations) observed in the radio signal during the occultation of Voyager 1 by Titan (Hinson and Tyler, 1983) provide information concerning neutral atmospheric density fluctuations on scales on hundreds of meters to a few kilometers.
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The reflection and ducting of atmospheric acoustic-gravity waves

Canadian Journal of Physics, 1965
A simple form is derived for the differential equations governing the propagation of acoustic–gravity waves in an atmosphere whose temperature and horizontal wind velocity vary in an arbitrary manner with height. The condition for wave reflection is discussed in some detail, and the W.K.B. approximate solutions are derived and examined.
M. L. V. Pitteway, C. O. Hines
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The sources of atmospheric gravity waves

Contemporary Physics, 1979
Abstract The gravity wave theory has been very successful in the interpretation of various upper atmospheric phenomena. This article offers a review of the present state of knowledge about the various sources of atmospheric gravity waves, particularly those which give rise to different types of travelling ionospheric disturbance.
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