TY - JOUR

T1 - Spectra of tides and planetary waves from the data of ionosonde measurements near Saint Petersburg

AU - Гаврилов, Николай Михайлович

AU - Коваль, Андрей Владиславович

N1 - Nikolai M. Gavrilov, Andrey V. Koval, "Spectra of tides and planetary waves from the data of ionosonde measurements near Saint Petersburg," Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 119167R (15 December 2021); doi:10.1117/12.2603285

PY - 2021/12/16

Y1 - 2021/12/16

N2 - Spectra of the critical frequency of the F2 ionospheric layer in the range of periods 0.5 – 40 days are analyzed using the data of measurements with the ionosonde DPS-4 at the Peterhof scientific station of Saint Petersburg State University (60°N, 30°E). Spectral analysis is executed using the Lomb –Skargle method for 60-day running intervals. Spectra show maxima at periods of 1 day and 0.5 day corresponding to diurnal and semidiurnal changes, and maxima in the range ofperiods 2 – 40 days. These waves have frequently maximum amplitudes in spring and summer, which is opposite to the PW amplitudes observed in the lower and middle atmosphere. This may be caused by different mechanisms including possible PW propagation from the middle atmosphere of the winter hemisphere to the summer thermosphere along the waveguides crossing the equator at altitudes above 60 km.

AB - Spectra of the critical frequency of the F2 ionospheric layer in the range of periods 0.5 – 40 days are analyzed using the data of measurements with the ionosonde DPS-4 at the Peterhof scientific station of Saint Petersburg State University (60°N, 30°E). Spectral analysis is executed using the Lomb –Skargle method for 60-day running intervals. Spectra show maxima at periods of 1 day and 0.5 day corresponding to diurnal and semidiurnal changes, and maxima in the range ofperiods 2 – 40 days. These waves have frequently maximum amplitudes in spring and summer, which is opposite to the PW amplitudes observed in the lower and middle atmosphere. This may be caused by different mechanisms including possible PW propagation from the middle atmosphere of the winter hemisphere to the summer thermosphere along the waveguides crossing the equator at altitudes above 60 km.

KW - upper atmosphere;

KW - ionosphere;

KW - ionospheric disturbances;

KW - planetary waves;

KW - tides;

KW - tides

KW - upper atmosphere;

KW - ionosphere;

KW - ionospheric disturbances;

KW - planetary waves;

KW - tides;

KW - spectral analysis

U2 - 10.1117/12.2603285

DO - 10.1117/12.2603285

M3 - Conference article

VL - 11916, 27th International Symposium on Atmospheric and Ocean Optics

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

M1 - 119167R

Y2 - 5 July 2021 through 9 July 2021

ER -