Geomagnetism and Aeronomy

, Volume 49, Issue 8, pp 1223–1225 | Cite as

Detection of ionospheric layers in the dayside ionosphere of Venus at altitudes of 80–120 km from Venera-15 and -16 two-frequency radio-occultation results

  • A. L. Gavrik
  • A. G. Pavelyev
  • Yu. A. Gavrik
Article

Abstract

We propose a technique for analyzing radio-occultation data that allows the effects of the noise, ionosphere, and atmosphere on the radio-occultation results to be reliably separated. This enables a more accurate investigation into the ionosphere formation mechanisms. Ionized layers are shown to exist in the dayside ionosphere of Venus at altitudes from 80 to 120 km. The position of the lower boundary of this ionized region can vary over the range of 80–100 km and the electron density gradients can change several times several.

References

  1. Yu. N. Aleksandrov et al., “Dayside Ionosphere of Venus According to the Data of Two-Frequency Radiosounding from the Venus-9 and Venus-10 Satellites,” Radiotekh. Elektron. 23(9), 1840 (1978).Google Scholar
  2. T. E. Cravens and A. J. Kliore, et al., “The Ionospheric Peak on the Venus Dayside,” J. Geophys. Res. 86A, 11323 (1981).CrossRefGoogle Scholar
  3. A. L. Gavrik and L. N. Samoznaev, “Fetures of the Venus Dayside Ionosphere in the Years of Low and High Solar Activity,” Kosm. Issled. 25(2), 285–291 (1987).Google Scholar
  4. B. Haeusler, et al., “VeRa Experiment for Venus Express,” Planet. Space Sci. 54(13–14), 1315–1335 (2006).CrossRefGoogle Scholar
  5. J. M. Jenkins, P. G. Steffes, et al., “Radio Occultation Studies of the Venus Atmosphere with the Magellan Spacecraft,” Icarus 110, 79–94 (1994).CrossRefGoogle Scholar
  6. N. A. Savich et al., “Dayside Venus Ionosphere according to the Radio Occultation Data of the Venus-15 and -16 Satellites in 1983,” Radiotekh. Elektron. (Moscow) 31(11), 2113 (1986).Google Scholar
  7. Venus, Ed. by D. M. Hunten (Univ. Arizona Press, 1983).Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • A. L. Gavrik
    • 1
  • A. G. Pavelyev
    • 1
  • Yu. A. Gavrik
    • 1
  1. 1.Institute of Radio Engineering and ElectronicsRussian Academy of SciencesMoscowRussia

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