Variations of the Ionospheric Plasma Parameters Observed by the Ionosonde and Magnetic Station in the Range of Periods of Planetary Waves

—Variations of the geomagnetic field and F 2-layer critical frequency in the range of periods of planetary waves in winter season are analyzed. The measurements were conducted by a magnetometer and a vertical radio sounding ionosonde at the nearby Belsk and Warsaw stations and provided the records o...

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Bibliographic Details
Published in:Izvestiya. Physics of the solid earth 2021-11, Vol.57 (6), p.927-934
Main Authors: Riabova, S. A., Shalimov, S. L.
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
F 2 region
Geomagnetic field
Geomagnetism
Geophysics/Geodesy
Ground stations
Ionosondes
Ionosphere
Ionospheric currents
Ionospheric plasma
Lower ionosphere
Magnetometers
Planet formation
Planetary waves
Plasma density
Records
Seasons
Solar activity
Upper ionosphere
Waves
Winter
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Summary:—Variations of the geomagnetic field and F 2-layer critical frequency in the range of periods of planetary waves in winter season are analyzed. The measurements were conducted by a magnetometer and a vertical radio sounding ionosonde at the nearby Belsk and Warsaw stations and provided the records of the ionospheric current variations in the lower ionosphere and plasma density variations in the upper ionosphere, respectively. Spectral estimation is carried out for the winter seasons of 2018–2019 and 2014–2015 when solar activity was low and high, respectively. It is established that practically synchronous variations in the above range of period are present in the records by the ground magnetic station and in the ionosonde measurements of the F 2 layer critical frequency. The spectra of the time variations of the geomagnetic field and F 2-layer critical frequency in the period range of planetary waves in winter season contain the harmonic components associated with solar activity and with quasi-16-day and quasi-10-day planetary waves. The mechanism of the formation of the 16- and 10-day variations in the upper ionosphere is proposed.
ISSN:1069-3513
1555-6506
DOI:10.1134/S1069351321060069