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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 15, issue 7
Ann. Geophys., 15, 870-877, 1997
https://doi.org/10.1007/s00585-997-0870-z
© European Geosciences Union 1997
Ann. Geophys., 15, 870-877, 1997
https://doi.org/10.1007/s00585-997-0870-z
© European Geosciences Union 1997

  31 Jul 1997

31 Jul 1997

Radar backscatter from plasma irregularities of the lower E region induced by neutral turbulence

K. Schlegel and A. V. Gurevich1 K. Schlegel and A. V. Gurevich
  • Max-Planck-Institut für Aeronomie, 37189 Katlenburg, Lindau, Germany
  • 1On leave from P.N. Levedev Institute of Physics, 117924 MOSCOW
  • Correspondence to: K. Schlegel

Abstract. Recently, one of the authors (A. V. G.) developed a theory of low-frequency plasma irregularities which are created as a consequence of neutral turbulence in the D and lower E regions. In the following this theory will be applied to coherent backscatter experiments with radars in a frequency range between 5 and 150 MHz. We discuss the dependence of the backscatter cross-section on ionospheric as well as on turbulence parameters. The backscatter increases strongly with decreasing radar frequency. Above 15 MHz the effects discussed here can probably only be detected by very powerful radars with large antenna arrays.

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