Generation of ionospheric ducts by the HAARP HF heater

J. A. Cohen, R. Pradipta, L. M. Burton, A. Labno, M. C. Lee, B. J. Watkins, C. Fallen, S. P. Kuo, W. J. Burke, D. Mabius, B. Z. See

Research output: Contribution to journalConference articlepeer-review


We report an investigation of ionospheric ducts having the shape of large plasma sheets, generated by vertically transmitted HAARP HF heater waves in several experiments conducted in Gakona, Alaska. Theory predicts that O-mode heater wave-created ionospheric ducts form parallel-plate waveguides within the meridional plane, and those generated by the X-mode heater waves are orthogonal to the meridional plane. Our theoretical prediction is supported by measurements of ionosonde data (namely ionograms), range-time-intensity (RTI) plots of UHF and HF backscatter radars, as well as magnetometer data analyses. When these plasma sheets experienced E×B drifts, they were intercepted by the HAARP UHF radar and seen as slanted stripes in the RTI plots. This striking feature was also observed in our earlier experiments using the Arecibo UHF radar.

Original languageEnglish (US)
Article number014040
JournalPhysica Scripta T
StatePublished - 2010
Event2nd International Conference and Advanced School on Turbulent Mixing and Beyond, TMB-2009 - Trieste, Italy
Duration: Jul 27 2009Aug 7 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics
  • General Physics and Astronomy


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