Systematic refraction caused by equatorial plasma bubbles observed in microwave scintillations

S. Franke, J. Austen, A. W. Wernik, C. H. Liu

Research output: Contribution to journalArticle


Equatorial ionospheric scintillation data at 1541.5 Mhz (L‐band) and 3945.5 Mhz (C‐band) showing time shifts of up to one second between similar fades of the two signals are presented. Simple model computations show that systematic refractive effects due to equatorial plasma bubbles in the particular propagation geometry may explain the observed data. Implications on equatorial ionospheric irregularities and scintillation theory are discussed.

Original languageEnglish (US)
Pages (from-to)1057-1060
Number of pages4
JournalGeophysical Research Letters
Issue number9
StatePublished - Sep 1982
Externally publishedYes


ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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