Physics
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981scisn..24..508z&link_type=abstract
Scientia Sinica, vol. 24, Apr. 1981, p. 508-520.
Physics
3
Evolution (Development), Gravity Waves, Time Dependence, Vortex Streets, Wave Packets, Wentzel-Kramer-Brillouin Method, Atmospheric Circulation, Coriolis Effect, Ocean Currents, Perturbation Theory, Phase Velocity, Planetary Waves, Water Waves
Scientific paper
Evolutionary processes of disturbances in the nonuniform basic current are analyzed using the WKBJ method in a unified and universal form to reveal evolutional characteristics of both the inertia-gravitational wave and the vortex wave. In the case of the inertia-gravitational wave, the wavelength becomes shorter as the wave develops, and longer as the wave decays, while the opposite holds true for the vortex wave. It is proved that in the actual atmosphere, fast waves are marked only when the wavelength is short, while fast waves with relatively long wavelength are not so marked and are difficult to observe. The different evolutional characteristics are determined by the nonuniformity of the basic current and the various types of the waves.
Lu Patrick
Zeng Qiang
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