Резонансные проявления в грозовых электромагнитных сигналах
Abstract
On the basis of experimental data of observations of low-frequency radio emissions carried out in the vicinity of Yakutsk city and Batagai settlement the resonant effects of lightning electromagnetic signals are considered. The effects have frequencies which are below the critical frequency of transverse resonance of the «earth–ionosphere» waveguide.The effects in the form of «bands» (quasi-periodic emissions) registered mostly in the vicinity of Batagai were standing out. The main resonance frequency of the effects was about 145 Hz, and Q-factor was about 10.The distribution of possible critical frequencies obtained on the basis of the signals with upper frequency «cut-off» reveals a fairly wide range of frequencies, with maximum events at 700–800 Hz. In the range of 350–600 Hz it is observed the coincidence of frequencies of different types of the resonant effects: bands, «knees» (dispersion upwards and downwards from the resonant frequency) and signals with upper frequency «cut-off». The waveguide formed by the layers of the ionosphere is proposed as a possible waveguide, in which these resonance effects are manifested.
About the Authors
Анатолий Анатольевич Торопов
Институт космофизических исследований и аэрономии СО РАН
Russian Federation
Russian Federation
Виктор Арсланович Муллаяров
Институт космофизических исследований и аэрономии СО РАН
Russian Federation
Russian Federation
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Review
For citations:
Торопов А.А., Муллаяров В.А. Резонансные проявления в грозовых электромагнитных сигналах. Arctic and Subarctic Natural Resources. 2015;20(3):21-26. (In Russ.)
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