Signature of burst particle precipitation on VLF signals propagating in the Antarctic earth-ionosphere waveguide

Details Signature of burst particle precipitation on VLF signals propagating in the Antarctic earth-ionosphere waveguide Signature of burst particle precipitation on VLF signals propagating in the Antarctic earth-ionosphere waveguide

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....9619375c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Nov. 1, 1991, p. 19,375-19,387.

Other

6

Antarctic Regions, Earth Ionosphere, Ionospheric Propagation, Particle Precipitation, Waveguides, Bursts, Electron Energy, Energetic Particles, Very Low Frequencies

Scientific paper

The effect of a burst precipitation of electrons on the propagation of VLF (3.79-kHz) signals in the Antarctic earth-ionosphere waveguide was examined using the computer wave progatation model of Smith and Cotton (1990). A simulation of the propagation of 3.79 kHz signals transmitted from the horizontal dipole at Siple station and propagating toward the Halley and the South Pole receivers, showed that the natures of the signals received at the two stations were quite different. The signal received at Halley was dominated by a single quasi-transverse magnetic mode, with other modes at least 20 kB weaker, whereas the signal received at South Pole contained two more comparable modes. Calculations are presented which show that the observed signatures could be caused by signals echoing from precipitation patches located away from the great circle path.

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