Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Vertical wavelength"”.
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Estimation of the vertical wavelength of atmospheric gravity waves from airglow imagery
… gravity waves (AGWs). As AGWs propagate vertically, they spatially perturb the airglow emission layers in all three dimensions. Estimates of the vertical wavelength, horizontal wavelength, and the intrinsic frequency are needed to characterize an AGW and quantify its effects on upper …
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Sodium lidar studies of the horizontal variability of gravity waves in the mesosphere
… intrinsic parameters include the horizontal and vertical wavelengths, period, and wave propagation direction. The technique involves measuring the altitude variations of the wave induced density perturbations in the mesosopheric Na layer. The intrinsic horizontal wavelength of a wave observed …
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Long-range Propagation, Interaction, and Dissipation of Small-Scale Gravity Waves in the Mesosphere and Lower Thermosphere
… and thermal conduction acts to decrease the vertical wavelength of the packet in time (except in the steady-state case, when it remains constant). This is due to the higher frequencies (longer wavelengths) reaching the thermosphere first and dissipating before the lower frequencies (shorter …
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Studies of gravity wave and thermal tide and their interactions in the middle atmosphere
… to a low static stability layer. The vertical wavelengths are larger in the mesosphere (12-13 km) than in the stratosphere (6-7 km), consistent with the decreasing static stability with altitude. The wave is propagating northward and the horizontal wavelength is 2140 km and intrinsic …
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An Observational Investigation on Gravity Wave Characteristics and Propagation in the Lower Stratosphere and Mesopause
… to higher (lower) frequency and larger (smaller) vertical wavelength. Thus, the observed gravity waves tend to propagate against background wind. The apparent against background wind propagation is largely caused by the contrast in cancellation factor for waves propagate in different direction. To …