F-region electron heating by X-mode radiowaves in underdense conditions
Observations of modifications of the electron temperature in the F-region produced by powerful high frequency radiowaves at 4.04 MHz transmitted in X-mode are presented. The experiments were performed during quiet nighttime conditions with low ionospheric densities so no reflections occurred. El...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2009-06-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/27/2585/2009/angeo-27-2585-2009.pdf |
| Summary: | Observations of modifications of the electron temperature in the F-region
produced by powerful high frequency radiowaves at 4.04 MHz transmitted in
X-mode are presented. The experiments were performed during quiet nighttime
conditions with low ionospheric densities so no reflections occurred.
Electron temperature enhancements of the order of 300–400 K were obtained.
Numerical simulation of ohmic heating by the pump wave reproduces both
altitude profiles and temporal dependence of the temperature modifications in
the experiments. |
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| ISSN: | 0992-7689 1432-0576 |