A. G. Kolesnik

The contingency of parameters of human encephalograms and Schumann resonance electromagnetic fields revealed in monitoring studies

The contingency of variations in amplitude—frequency parameters of the main modes of extremely-low-frequency resonances of an ionospheric waveguide (Schumann resonances) and changes in human encephalograms in the frequency range of 6–16 Hz has been studied. The results obtained with the use of synchronized monitoring suggest that such contingency, expressed as indices of cross-correlation function, is statistically significant, varying from 0.12 to 0.65 at α = 0.95. It has been established that contingency is largely determined by the current level of solar and geomagnetic activity.

The Schumann Resonances. I. Monitoring of the ELF Electromagnetic Noise Background

The present work is the first one in a series of studies of the Schumann resonances in Tomsk. The main principles of experimental investigations of the global Earth-ionosphere resonator are formulated. The method of obtaining the resonance characteristics of the first four modes of the Schumann resonator is based on continuous monitoring of the extremely low-frequency (ELF) electromagnetic noise background.

Resonant mechanism of solar-terrestrial relationships

The present paper studies the resonant mechanism of solar-terrestrial relationships and their influence on the state of individual systems of the human organism. The level of statistical correlation between the characteristics of the human cardiovascular system and the brain activity and the fundamental modes of circumterrestrial resonators are numerically evaluated.

Seasonal—daily variations in the electromagnetic background of the medium-frequency and high-frequency radio ranges during low solar activity

Based on the data of the long-term monitoring of the electromagnetic background at frequencies of 1–30 MHz in Tomsk, new main regularities of the daily and seasonal variations in this background in different frequency ranges at a low level of solar activity (the annual average values are 68.6 = F10.7 <= 80.9) have been established.

Ionospheric effects of solar eclipses at midlatitudes

The influence of solar eclipses on the ionospheric plasma is considered based of the data of midlatitude vertical sounding stations during the entire period from the beginning of ionospheric studies in Russia. Changes in the electron density in the F and E regions during solar eclipses have been quantitatively estimated.

Investigation of the Occurrence of ELF Modulation in HF Signals from the Data of Electromagnetic Monitoring

The results of investigations into the occurrence of extremely low-frequency (ELF) modulation in high-frequency (HF) signals are presented. The seasonal and diurnal behavior of the occurrence of synchronous multichannel (SM) ELF modulation is established. A correlation between the SM ELF modulation occurrence and the presence of sporadic E-layers in the ionosphere is found.

The electromagnetic background of the high frequency radio range during solar eclipses

We examine variations in the level of the electromagnetic background of the high-frequency radio range based on monitoring data conducted in Tomsk. We establish the main laws by which it changes in various frequency bands during three solar eclipses observed in Tomsk: the level of the electromagnetic background increases to 40 dB at frequencies of 3–7 MHz, decreases to 40 dB at frequencies of 11–30 MHz, and remains almost unchanged relative to the level of control days at frequencies of 7–11 MHz.

Role of the ionospheric plasma in the formation of a shortwave radiation field in the environment

Using a model formulation, we study how the ionospheric plasma affects the formation of a short-wave electromagnetic field in near space by an operating broadcasting network. The principles underlying the construction of the model and the methods of solution are elucidated. An analysis is made of the variation of the global distribution of anthropogenic electromagnetic background for specific heliogeophysical conditions. Zones of maximum electromagnetic energy density are distinguished in the ionospheric plasma.

Electric fields of ionospheric plasma at low latitudes

A mathematical—physical model is proposed for the electric fields and currents of ionospheric plasma, which is capable of describing the altitude variations of these electrodynamic parameters. The results obtained by solving of the model problem are analyzed. It is shown that the distribution of the electric fields and currents of ionospheric plasma has significant inhomogeneities that must be taken into account in solving problems related to the electrodynamics of ionospheric plasma.

Monitoring environmental electromagnetic fields. 1. Remote-sensing methods

This paper discusses monitoring electromagnetic fields (natural and artificial) in the atmosphere. Methods are described for remote sensing of the atmosphere and surface in order to examine static and alternating electromagnetic-energy fluxes in the biosphere.