Middle and upper atmosphere radar observations of the dispersion relation for ionospheric gravity waves

Details Middle and upper atmosphere radar observations of the dispersion relation for ionospheric gravity waves Middle and upper atmosphere radar observations of the dispersion relation for ionospheric gravity waves

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995jgr...10023763o&link_type=abstract

Journal of Geophysical Research, Volume 100, Issue A12, p. 23763-23768

Physics

9

Meteorology And Atmospheric Dynamics: Waves And Tides, Ionosphere: Wave Propagation, Meteorology And Atmospheric Dynamics: Thermospheric Dynamics

Scientific paper

By observing the ionospheric F region simultaneously in multiple beams with the middle and upper atmosphere radar, we have been able to track the passage of gravity waves and measure their propagation characteristics. Here we investigate the dispersion relation for these waves. This relation varies widely from day to day, even on two successive magnetically extremely quiet days. On average, however, we find that the wave horizontal phase trace speed is about 200 m/s for periods from 60 to 130 min with little variation with solar or magnetic activity. There is some indication that the speed increases slightly from equinox to winter.

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