Results of Comparing Schumann-Resonance Observations with the Model of a Single Global Thunderstorm Center

Abstract

The results of two-year monitoring of the Schumann-resonance signals are processed and the diurnal and seasonal variations in the activity of the global thunderstorm centers are estimated. We calculate the field in the model of thunderstorm activity localized in a small circular area (the model of a single source). Comparison between the experimental and model data allowed us to find the position of the maximum of the global thunderstorm activity. It is shown that a more exact interpretation of the experimental data is achieved if additional background radiation, which remains approximately constant during a day and is approximately equal to the intensity of a compact source, is included into the model.

Long‐Term Schumann Resonance Dynamics Based on Horizontal Magnetic Field Data at Mikhnevo Observatory During 2016–2020

“…During NH autumn and winter South American thunderstorm centers are evident in the H NS component (between 16 and 24 UT), disappearing during NH spring and summer. All these seasonal ELF spectral patterns agree with optical lightning observations by Blakeslee et al (2014) and other SR observations in Europe, for example, by Yatsevich et al (2005). Resonance frequencies and quality factors also represent diurnal and seasonal variations.…”

“…(2014) and other SR observations in Europe, for example, by Yatsevich et al. (2005). Resonance frequencies and quality factors also represent diurnal and seasonal variations.…”

Diurnal and Seasonal Variations in the Intensities and Peak Frequencies of the First Three Schumann-resonance Modes

“…The two-component model of thunderstorm activity was proposed in [7], where the experimental data were compared with the single-source model. This was done for the total (calculated over a range of frequencies covering the first three Schumann-resonance modes) diurnal variations in the intensities of two magnetic components.…”

ULF/ELF magnetic field variations from atmosphere induced by seismicity

“…In this range the narrowband spectrum maxima near Schumann resonance at about 8, 14, 20, and 24 Hz dominate, and the energy source for them is attributed to the worldwide thunderstorm activity [e.g., Nickolaenko and Hayakawa , 2002]. The influence of the world geomagnetic activity is weak within this frequency range, although regular diurnal and seasonal variations exist [ Yatsevich et al , 2005]. The signal azimuth at Schumann Resonance frequencies turns following the activity of World thunderstorm centers [ Belyaev et al , 1999].…”