Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 36, issue 1
Articles | Volume 36, issue 1
https://doi.org/10.5194/angeo-36-243-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-36-243-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 36, issue 1
Regular paper
 | 
21 Feb 2018
Regular paper |  | 21 Feb 2018

Evidence of L-mode electromagnetic wave pumping of ionospheric plasma near geomagnetic zenith

Thomas B. Leyser, H. Gordon James, Björn Gustavsson, and Michael T. Rietveld

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Short summary
Transmission of powerful radio waves into the overhead ionosphere is used to study plasma turbulence processes. It is well known that the ionospheric response to radio waves is the strongest in the direction of the geomagnetic field. We have found evidence that the transmitted radio wave can propagate in a mode that enables the wave to propagate much higher in altitude and deeper into the ionosphere than what is usually expected, which may account for the strong plasma response observed.
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