Generation of whistler waves by continuous HF heating of the upper ionosphere

A. Vartanyan, G. M. Milikh, B. Eliasson, A. C. Najmi, M. Parrot, K. Papadopoulos

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Broadband VLF waves in the frequency range 7–10 kkHz and 15–19 kHz, generated by F region CW HF ionospheric heating in the absence of electrojet currents, were detected by the DEMETER satellite overflying the High Frequency Active Auroral Research Program (HAARP) transmitter during HAARP/BRIOCHE campaigns. The VLF waves are in a frequency range corresponding to the F region lower lybrid (LH) frequency and its harmonic. This paper aims to show that the VLF observations are whistler waves generated by mode conversion of LH waves that were parametrically excited by HF-pump-plasma interaction at the upper hybrid layer. The paper discusses the basic physics and presents a model that conjectures (1) the VLF waves observed at the LH frequency are due to the interaction of the LH waves with meter-scale field-aligned striations—generating whistler waves near the LH frequency; and (2) the VLF waves at twice the LH frequency are due to the interaction of two counterpropagating LH waves—generating whistler waves near the LH frequency harmonic. The model is supported by numerical simulations that show good agreement with the observations. The (Detection of Electromagnetic Emissions Transmitted from Earthquake Regions results and model discussions are complemented by the Kodiak radar, ionograms, and stimulated electromagnetic emission observations.
LanguageEnglish
Pages1188-1198
Number of pages11
JournalRadio Science
Volume51
Issue number7
DOIs
Publication statusPublished - 29 Jul 2016

Fingerprint

upper ionosphere
Ionosphere
ionosphere
heating
Heating
F region
research program
ionospheric heating
frequency ranges
DEMETER
Plasma interactions
electromagnetism
electrojets
harmonics
ionograms
plasma interactions
striation
electrojet
transmitters
radar

Keywords

  • whistler waves
  • lower hybrid waves
  • ionospheric heating
  • whistlers
  • mode conversion
  • nonlinear

Cite this

Vartanyan, A., Milikh, G. M., Eliasson, B., Najmi, A. C., Parrot, M., & Papadopoulos, K. (2016). Generation of whistler waves by continuous HF heating of the upper ionosphere. Radio Science, 51(7), 1188-1198. https://doi.org/10.1002/2015RS005892
Vartanyan, A. ; Milikh, G. M. ; Eliasson, B. ; Najmi, A. C. ; Parrot, M. ; Papadopoulos, K. / Generation of whistler waves by continuous HF heating of the upper ionosphere. In: Radio Science. 2016 ; Vol. 51, No. 7. pp. 1188-1198.
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Vartanyan, A, Milikh, GM, Eliasson, B, Najmi, AC, Parrot, M & Papadopoulos, K 2016, 'Generation of whistler waves by continuous HF heating of the upper ionosphere' Radio Science, vol. 51, no. 7, pp. 1188-1198. https://doi.org/10.1002/2015RS005892

Generation of whistler waves by continuous HF heating of the upper ionosphere. / Vartanyan, A.; Milikh, G. M.; Eliasson, B.; Najmi, A. C.; Parrot, M.; Papadopoulos, K.

In: Radio Science, Vol. 51, No. 7, 29.07.2016, p. 1188-1198.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Generation of whistler waves by continuous HF heating of the upper ionosphere

AU - Vartanyan, A.

AU - Milikh, G. M.

AU - Eliasson, B.

AU - Najmi, A. C.

AU - Parrot, M.

AU - Papadopoulos, K.

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Vartanyan A, Milikh GM, Eliasson B, Najmi AC, Parrot M, Papadopoulos K. Generation of whistler waves by continuous HF heating of the upper ionosphere. Radio Science. 2016 Jul 29;51(7):1188-1198. https://doi.org/10.1002/2015RS005892