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The Generation of ULF/ELF/VLF Waves in the Ionosphere by Modulated Heating

Research output: Contribution to journalReview articlepeer-review

Published
Article number29
<mark>Journal publication date</mark>29/01/2021
<mark>Journal</mark>Universe
Issue number29
Volume7
Number of pages18
Publication StatusPublished
<mark>Original language</mark>English

Abstract

One of the most important effects of ionospheric modification by high power, high frequency (HF) waves is the generation of ultra low frequency/extremely low frequency/very low frequency (ULF/ELF/VLF) waves by modulated heating. This paper reviews the scientific achievements of the past five decades regarding the main mechanisms of excitation of ULF/ELF/VLF waves and discusses their characteristics, such as their electrojet dependency, the location of the source region, continuous and discontinuous waves, the number of HF arrays, and the suitable range of the modulation frequency for different proposed mechanisms. Finally, the outlook for future research in this area is presented.