Abstract
The results of studying the generation of low-frequency radiation in the ionosphere affected by high-power modulated HF radiation of the Sura facility are presented. A large amount of data on characteristics of the ULF/VLF artificial signals observed in the night time, which indicate the manifestation of a new generation mechanism not related to the quasistationary ionospheric current modulation effect, have been obtained for the first time at the mid-latitudes. The results of studying the dependence of the signal value on the beam inclination of the pump wave and the distance to the observation point from the facility are presented. It is shown that the signals can be both right- and left-hand polarized depending on the level of geomagnetic activity. The measured time delay of the ULF signal indicates the location of the source at the F-layer maximum. Interpretation of the observed characteristics of artificial low-frequency signals based on a ponderomotive excitation mechanism of the diamagnetic ring current around the HF radiation beam at a modulation frequency agrees with the main results of the experiment.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
