Compression and rarefaction of F-region plasma caused by an atmospheric gravity wave
The Advanced Ionospheric Sounder at Halley (75° 31′S, 26° 59′W) in Antarctica has been used to observe the F-region disturbance caused by an atmospheric gravity wave. Observations at 4.5 MHz were used to examine the variations of group range, obtained from time-of-flight measurements, and of Doppler...
| Published in: | Journal of Atmospheric and Terrestrial Physics |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
Elsevier
1991
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| Subjects: | |
| Online Access: | http://nora.nerc.ac.uk/id/eprint/520214/ https://doi.org/10.1016/0021-9169(91)90019-4 |
| Summary: | The Advanced Ionospheric Sounder at Halley (75° 31′S, 26° 59′W) in Antarctica has been used to observe the F-region disturbance caused by an atmospheric gravity wave. Observations at 4.5 MHz were used to examine the variations of group range, obtained from time-of-flight measurements, and of Doppler shift, derived from Fourier analysis of the quadrature components of the signal. A comparison of simultaneous values of group-range and phase-path velocities shows clear evidence of compression and rarefaction of ionization and more complicated changes in the height distribution of ionization in the oscillatory changes associated with the wave |
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