Can ion cyclotron waves propagate to the ground?

Jay R. Johnson, Chio-Zong Cheng

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)


This paper demonstrates how ion cyclotron waves generated in the equatorial magnetosphere can propagate to the ground and resolves a discrepancy between theory and observation that has lasted over a decade. We present a full wave analysis for ion cyclotron waves propagating from the equatorial magnetosphere to the ground. Our analysis demonstrates that strong mode coupling occurs near the He+ and O+ resonance locations which allows the equatorial waves to penetrate to ionospheric altitudes with substantial amplitude and shifted polarization consistent with observational studies.

Original languageEnglish
Pages (from-to)671-674
Number of pages4
JournalGeophysical Research Letters
Issue number6
Publication statusPublished - 1999 Mar 15

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)


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