Dispersion Characteristics and Waveform Analysis of Tweek Atmospherics
The frequency characteristics and the waveforms of tweeks are analyzed theoretically. In the waveform analysis the mode current method is used: a method based upon the source current expansion and the multi-reflection. In the theory the source current is Fourier-expanded by using the electric images. The calculated frequency dispersion and the first mode waveform are compared with the observed ones and discussions follow.
KeywordsRadiation Field Image Source Frequency Dispersion Waveform Analysis Electric Image
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- 1.Helliwell RA. (1965) Whistlers and related ionospheric phenomena. Stanford University Press. California, pp 349Google Scholar
- 5.Likhter JI., Gutelmi AV., Erukhimov LM., Mikhailova GA. (1988) Wave diagnostics of the near-Earth plasma. Nauka Moscow, pp 215 (in Russian)Google Scholar
- 6.Yano S., Ogawa T., Hagino H., (1989) Waveform analysis of tweek atmospherics. Res Lett Atmos Electr 9: 31–42Google Scholar
- 7.Budden KG. (1961) The wave-guide mode theory of wave propagation. Logos Press. London pp 325Google Scholar
- 8.Wolff EA. (1966) Antenna analysis. John Wiley & Sons. New York, pp 514Google Scholar
- 9.Uman MA. (1987) The lightning discharge. Academic Press. New York, pp 377Google Scholar
- 11.Galejs J. (1972) Terrestrial propagation of long electromagnetic waves. Pergamon Press. New York, pp 362Google Scholar
- 12.Tixier M. and Rivault R. (1974) Study of typical night time atmospheric waveforms observed at Poitiers (France). ELF-VLF Radio Wave Propagation. Edited by Holtet J A. D.Reidel Publishing Co. Dordrecht: 245–249Google Scholar