Physics
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9719389s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A12, p. 19,389-19,402.
Physics
13
Doppler Effect, Earth Magnetosphere, Earth-Ionosphere Waveguide, Electromagnetic Pulses, Frequency Shift, Particle Interactions, Pulse Duration, Very Low Frequencies, Wave Interaction
Scientific paper
When ducted narrow-band VLF pulses pass through the Earth's magnetosphere, small frequency shifts of about 1 Hz may be observed at the receiving site on the ground. This paper is a study of nonlinear frequency shifts induced by wave-particle interaction effects. The development assumes strong nonlinearity and the dominance of particle trapping. The VLF pulses are considered to be much shorter than the scale length of the interaction region; however, for long pulses, the results remain valid for the front part of the pulse as seen at the receiving site. Numerical simulations for the NAA and Siple transmitters are performed using a Vlasov code. The results are in general agreement with the theoretical analysis.
Nunn David
Sazhin Sergei S.
Shkliar D. R.
Smith Anthony J.
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