Simultaneous observations of sporadic E, Na, Fe, and Ca+ layers at Urbana, Illinois: three case studies

C. S. Gardner, T. J. Kane, D. C. Senft, Qian Jun Qian, G. C. Papen

Research output: Contribution to journalArticlepeer-review

Abstract

On June 6-7, 1991, a sporadic Na layer and a prominent temperature inversion layer were observed near 90 km. The formation of this low-altitude event appears to involve the release of Na from a chemical reservoir or from the surfaces of dust and smoke particles, perhaps facilitated by the high temperatures in the inversion layer. On December 10, 1991, sporadic Fe and Ca+ layers formed near 94 and 95 km, respectively, and on December 17-18, 1991, sporadic E, Fe, Na, and Ca+ layers formed simultaneously near 100 km. The characteristics of these December events suggest that sporadic Fe and high-altitude sporadic Na layers are formed by the neutralization of Fe2+ and Na+ in the associated sporadic E layers. -from Authors

Original languageEnglish (US)
Pages (from-to)16,865-16,873
JournalJournal of Geophysical Research
Volume98
Issue numberD9
DOIs
StatePublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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