Propagation of whistler mode waves through the ionosphere

We present results from numerical studies of whistler mode wave propagation in the Earth's ionosphere when artificially created plasma ducts are present. Using realistic density profiles from the SAMI2 ionospheric code, we solve the two‐dimensional electron magnetohydrodynamics equations to stu...

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Bibliographic Details
Published in:Journal of Geophysical Research: Space Physics 2012-08, Vol.117 (A8), p.n/a
Main Authors: Streltsov, A. V., Woodroffe, J. R., Huba, J. D.
Format: Article
Language:English
Subjects:
Atmospheric sciences
duct
Earth sciences
Earth, ocean, space
Exact sciences and technology
Ionosphere
Magnetism
Propagation
VLF waves
whistler
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Summary:We present results from numerical studies of whistler mode wave propagation in the Earth's ionosphere when artificially created plasma ducts are present. Using realistic density profiles from the SAMI2 ionospheric code, we solve the two‐dimensional electron magnetohydrodynamics equations to study the trans‐ionospheric propagation of artificially generated whistler waves at HAARP latitudes (L = 4.9). Both ducted and non‐ducted propagation is considered, but only ducted whistlers are able to propagate without a significant reduction in wave amplitude. The conditions necessary for the trapping of waves in both high‐ and low‐density ducts are discussed with particular attention paid to the practical accessibility of these parameter regimes. Key Points 1KHz whistler mode wave is not guided by the magnetic field in the ionosphere Whistler mode waves are guided by the density enhancement Whistler mode waves are not guided/trapped by density depletions
ISSN:0148-0227
2169-9380
2156-2202
2169-9402
DOI:10.1029/2012JA017886