Spectral analysis of IAR oscillations to determine the value and variability of the peak electron density NmF2
Journal Title: Solar-Terrestrial Physics - Year 2023, Vol 9, Issue 3
Abstract
This methodical paper explores the possibility of estimating the peak electron density of the F2-region of the ionosphere (NmF2) under different conditions, using data on the frequency of spectral bands (harmonics) of the ionospheric Alfvén resonator (IAR) oscillation. We describe a simple technique for tracking the frequency of spectral bands during the day by measuring their position on the plot of the IAR daily dynamic spectrum. Through calculations within the framework of the global ionospheric model IRI-2016, we verify the correctness of the comparison of the frequencies of resonant bands, measured at one point, with data from radio sounding, performed at other points remote from IAR frequency measurement sites at a distance. We propose an algorithm for comparing NmF2, measured by a radiosonde, with frequencies of spectral lines by precalculating the evaluation factor. It is formed on the basis of a nonlinear combination of the frequencies of the three observed harmonics. Then the time series of this factor is compared with the results of radio sounding, and correlation and regression coefficients, as well as estimation errors are calculated. Using the material on rare cases of round-the-clock observation of IAR oscillations in the winter months of 2011–2012, we trace the dependence of the average error in determining the peak electron density on local time. We present the data on the most favorable local time intervals for determining NmF2 from IAR harmonic frequencies depending on season. Some additional factors are discussed which affect the accuracy of estimates and determine the frequency range of IAR oscillations.
Authors and Affiliations
Potapov A. S. , Polyushkina T. N. , Guglielmi A. V. , Ratovsky K. G. , Moskalev I. S.
Keywords
Related Articles
- EP ID EP722179
- DOI 10.12737/stp-93202306
- Views 57
- Downloads 0
ACCELERATION OF PARTICLES IN A CONSTANT MAGNETIC FIELD AND AN ELECTRIC FIELD PERPENDICULAR TO IT, INCREASING WITH TIME
The paper addresses the problem of acceleration of particles in a constant, uniform magnetic field of magnitude B and a uniform electric field perpendicular to it, which slowly increases with time. Assuming that the elec...
FORCE BALANCE IN CURRENT SHEETS IN COLLISIONLESS PLASMA
In this paper, we derive a divergent form of the force balance equation for collisionless plasma in the quasineutrality approximation, in which the electric field and current density are excluded. For a stationary spatia...
Ionospheric response over the high and middle latitude regions of Eurasia according to ionosonde data during the severe magnetic storm in March 2015
We have analyzed spatial and temporal variations in ionospheric parameters over high and middle latitudes of Eurasia, using data from chains of high- and mid-latitude ionosondes during a severe magnetic storm in March 20...
STATISTICAL RELATION OF TRAVELING IONOSPHERIC DISTURBANCES WITH NEUTRAL WIND AND DISTURBANCES IN THE STRATOSPHERE
Using the representative statistics on traveling ionospheric disturbances (TIDs) obtained by Yekaterinburg and Magadan radars, we have shown that distributions of TIDs and average TID velocities by azimuths and local tim...
On possible relation of earthquakes with the sign change of the interplanetary magnetic field radial component
This work is devoted to an experimental study of the possible relationship between earthquakes and interplanetary magnetic field (IMF) variations. For the analysis, we use world and regional catalogs of earthquakes and a...