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Geomagnetism and Aeronomy

, Volume 58, Issue 6, pp 768–774 | Cite as

Features of the Spectrum of Natural VLF Emissions in the Near-Equatorial Region of the Upper Ionosphere from DEMETER Satellite Observations

  • D. R. ShklyarEmail author
  • E. E. TitovaEmail author
  • M. ParrotEmail author
Article
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Abstract

The generation of the U-shaped spectrum, an unusual wave phenomenon observed in the equatorial part of the DEMETER satellite orbit, is studied. This wave phenomenon is explained for the first time based on the assumption that this emission is formed by the waves generated by lightning discharges, while the shape of the spectrum is determined by the features of wave propagation and damping in the near-equatorial region of the upper ionosphere.

Notes

ACKNOWLEDGMENTS

This work was supported by the Russian Foundation for Basic Research, project no. 16-52-16010 NTSNIL_a.

REFERENCES

  1. 1.
    Ginzburg, V.L. and Rukhadze, A.A., Volny v magnitoaktivnoi plazme (Waves in Magnetoactive Plasma), Moscow: Fizmatlit, 1972.Google Scholar
  2. 2.
    Gurnett, D.A., Shawhan, S.D., Brice, N.M., and Smith, R.L., Ion cyclotron whistlers, J. Geophys. Res., 1965, vol. 70, no. 7, pp. 1665–1688.CrossRefGoogle Scholar
  3. 3.
    Helliwell, R.A., Whistlers and Related Ionospheric Phenomena, Stanford, California: Stanford University Press, 1965.Google Scholar
  4. 4.
    Němec, F., Parrot, M., Santolík, O., Rodger, C.J., Rycroft, M.J., Hayosh, M., Shklyar, D., and Demekhov, A., Survey of magnetospheric line radiation events observed by the DEMETER spacecraft, J. Geophys. Res., 2009, vol. 114, A05203. doi 10.1029/2008JA014016Google Scholar
  5. 5.
    Parrot, M., Berthelier, J.J., Blecki, J., et al., Unexpected very low frequency (VLF) radio events recorded by the ionospheric satellite DEMETER, Surv. Geophys., 2015, vol. 36, no. 3, doi 10.1007/s10712-015-9315-5Google Scholar
  6. 6.
    Shklyar, D.R., Key problems in numerical simulation of spectrograms related to emissions caused by lightning strokes, Geomagn. Aeron. (Engl. Transl.), 2005, vol. 45, no. 4, pp. 474–487.Google Scholar
  7. 7.
    Shklyar, D.R., Parrot, M., Chum, J., Santolík, O., and Titova, E.E., On the origin of lower and upper frequency cutoffs on wedge-like spectrogram, J. Geophys. Res., 2010, vol. 115, A05203. doi 10.1029/2009JA014672CrossRefGoogle Scholar
  8. 8.
    Shklyar, D.R., Balikhin, M.A., and Titova, E.E., A contribution to the theory of the equatorial noise generation in the Earth’s magnetosphere, Geomagn. Aeron. (Engl. Transl.), 2017, vol. 57, no. 6, pp. 691–697.Google Scholar
  9. 9.
    Smith, R.L., Brice, N.M., Katsufrakis, J., Gnrnett, D.A., Shawan, S.D., Belrose, J.S., and Barrington, R.E., An ion gyrofrequency phenomenon observed in satellites, Nature, 1964, vol. 204, no. 4955, pp. 274–275.CrossRefGoogle Scholar
  10. 10.
    Storey, L.R.O., An investigation of whistling atmospherics, Philos. Trans. R. Soc., 1953, vol. 246, pp. 113–141.CrossRefGoogle Scholar
  11. 11.
    Vavilov, D.I. and Shklyar, D.R., Ionospherically reflected proton whistlers, J. Geophys. Res.: Space Phys., 2014, vol. 119, no. 12, pp. 9978–9991. doi 10.1002/2014JA020510CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Space Research Institute, Russian Academy of SciencesMoscowRussia
  2. 2.National Research University, Higher School of EconomicsMoscowRussia
  3. 3.Polar Geophysical InstituteApatityRussia
  4. 4.Laboratoire de Physique et chimie de L’environnement et de l’espace, Centre National de la Recherche Scientifique, L’université d’OrléansOrléansFrance

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