The paper presents the results of a comparative analysis of the spectral characteristics of the Schumann resonances in the Russian Altai and the Tomsk Region for the period from 2015 to 2018.
The paper presents the results of a three-year monitoring study of the magnetic component of the EM background in the Altay in the seasonal-daily observation cycle. Describe variations of resonant frequency and amplitude of the first three modes Schumann resonances.
The aim of the research is to analyze the contribution of close thunderstorms to the increase in the level of extremely low-frequency (ELF) electromagnetic (EM) background in the Siberian region. In this work, a technique for creating a response of close lightning discharges in magnetic induction components in the range up to 30 Hz is proposed and tested. The proposed method for joint analysis of synchronous monitoring data for local thunderstorm activity and variations of EM–focus is aimed at revealing the connection between the level of the EM background level and their parameters as the range and type of lightning discharge.
KEYWORDS: Solar processes, Data corrections, Climate change, Databases, Climatology, System on a chip, Analytical research, Ecology, Data modeling, Computer programming
The work is devoted to the analysis of long-term data series of the world network of ionospheric stations, and is aimed at studying the spectral composition and revealing long-term trends of the critical frequency F2 of the ionospheric layer. The accuracy of the description of the obtained model is calculated and the parameters of this model are given. The novelty of the work consists in applying the original method of constructing the model, and, accordingly, in creating a new qualitative-quantitative relationship of the input parameters and the results obtained from the empirical model. Also, the calculation of the parameters of the linear trend for each hour of local time at each latitude of the northern and southern hemisphere is given. The space-time distribution of the rate of change of the critical frequency foF2 on a global scale is presented.
The aim of the research is to analyze the variations in the positional angles of polarization ellipses of the extremely lowfrequency (ELF) electromagnetic (EM) background in the seasonally-daily cycle of observations. The statistical estimation of the positional angles of the polarization ellipses was carried out for the first three modes of the Schumann resonances taking into account the time of the day and the season of the year for the observation period from 2013 to 2017.
As a result of the organization monitoring studies at Baygazan (Russian Altay) and Kolarovo (Tomsk region), located at a distance of about 534 km, cut common and local patterns of behavior of extremely low-frequency (up to 30 Hz) electromagnetic background. A comparative analysis of the Schumann resonance parameters from a single methodic is carried out.
As a result of many years of monitoring studies of extremely low-frequency electromagnetic fields in Tomsk, the polarization characteristics of the first three modes of the Schumann resonances were obtained. The analysis of the relationship between the positional angles of polarization ellipses of the Schumann resonance modes and the position of the centers of global thunderstorm activity taking into account the world time and the season of the year is carried out.
KEYWORDS: Electromagnetism, Antennas, RF communications, Radio propagation, Atmospheric physics, Pollution control, Telecommunications, Signal detection, Data processing, Data communications
The article discusses basics of electromagnetic fields monitoring in the frequency range from 1 kHz to 30 MHz. Registration methods of experimental data processing obtained by ionosonde "TOMION" are provided. When using the global network of digital ionosondes "TOMION" will be able to monitor ionosphere condition in the passive mode of oblique radiosounding, as well as to perform the short-term (immediate) forecast of stable radio communication and electromagnetic pollution control on a global scale.
The paper presents the results of evaluation of the impact of geomagnetic storms on the Earth's ionosphere. As a data (investigated ranks) used the critical frequency of the F2 layer of the ionosphere and characteristic of geomagnetic activity - Kp index. The purpose of research is a quantitative assessment of the influence of magnetic storms on the Earth's ionosphere.
This paper presents a daily-season variation of the coefficient ellipticity and position angle of the ellipse polarization of the first three events of the Schumann resonances. A comparative analysis of the polarization characteristics was spending for the period 2013-2015 years.
The article is a brief description of the software developed for operation ionosonde "TOMION" in an accelerated mode active vertical radiosounding of the ionosphere.
In 1936 regular researchers of the ionosphere started a Ionospheric Station in Tomsk (Russia).By the year 2016 it will be 80 years old. This article is devoted to this remarkable event.
The article describes the experimentally determined distribution of ellipticity coefficient for the first three modes of the Schumann resonances (SR) for different seasons in 2014. Established the presence of seasonal variation of the frequency of occurrence for different types of polarization of the first three modes SR. It is shown that the frequency of occurrence of elliptical polarization for different modes of SR is about 70–80%. Circular polarization - a very rare event, the frequency of its occurrence is less than 1% for every season of the year.
The paper describes a method of magnetic measurements of natural electromagnetic fields ELF range. The results of the analysis of the frequency characteristics of fashion Schumann resonances in a suburban area in the seasonally-daily cycle of observations.
KEYWORDS: Atmospheric optics, Data modeling, Data centers, Solar processes, IRIS Consortium, Data corrections, Atmospheric physics, Analytical research, Quantitative analysis, Databases
The work is devoted to the analysis of ionospheric parameters on the basis of the National Geophysical Data Centre (NGDC). There is a quantitative assessment of the long-term variations in the critical frequency of F2 region of the ionosphere as a function of an 11 year old cycle of solar activity.
KEYWORDS: Radar, Software development, Digital signal processing, Antennas, Plasma, Data processing, Data centers, Data analysis, Observatories, Signal processing
This study is devoted to the development of new techniques for the research of the ionosphere state. This paper describes the new approaches to development and implementation of the methods for remote radio sounding of the ionosphere on the basis of the world technological advances and the most innovative methods of data analysis, applied at Ionospheric Observatory of Tomsk State University using data processing software Dynasonde 21.
In the study the critical frequency of the F2-layer of the ionosphere data obtained at Ionospheric Observatory of Tomsk
State University are analyzed. The analysis focuses on the study of the spectral composition and determining the long-term
trends values of foF2. For the spectral estimation the anharmonic decomposition method is used. The result of
research is establishing the dependence of a long-period trends character, periods values and the amplitudes of variations
of foF2 values caused by the eleven-year cycle of the Sun activity and orbital movement of the Earth on time of a day
and a season of year.
The article describes magnetic measurements technique of natural electromagnetic fields in ELF range. The analysis results of the amplitude characteristics of the Schumann resonance modes in a suburban area in the seasonal cycle of observations is presented.
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