Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 49-52 |
| Number of pages | 4 |
| Journal | Journal of Atmospheric and Terrestrial Physics |
| Volume | 53 |
| Issue number | 1-2 |
| DOIs | |
| Publication status | Published - 1 Jan 1991 |
ASJC Scopus subject areas
- Environmental Science(all)
- Engineering(all)
- Geophysics
- Atmospheric Science
- Earth and Planetary Sciences(all)