Compression and rarefaction of F-region plasma caused by an atmospheric gravity wave

Details Compression and rarefaction of F-region plasma caused by an atmospheric gravity wave Compression and rarefaction of F-region plasma caused by an atmospheric gravity wave

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jatp...53...49t&link_type=abstract

Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 53, Jan.-Feb. 1991, p. 49-52.

Computer Science

Sound

F Region, Gravity Waves, Ionospheric Sounding, Rarefied Plasmas, Traveling Ionospheric Disturbances, Doppler Effect, Ionosondes, Plasma Compression, Power Spectra

Scientific paper

The Advanced Ionospheric Sounder at Halley (75 deg 31 min S, 26 deg 59 min 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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