Variability of the ionosphere over Irkutsk at low solar activity

Autor:	N.M. Polekh, Nina Zolotukhina, Olga Pirog
Rok vydání:	2011
Předmět:	Solar minimum Physics Atmospheric Science Geophysics Amplitude Critical frequency Space and Planetary Science Aerospace Engineering General Earth and Planetary Sciences Astronomy and Astrophysics Ionosphere Atmospheric sciences
Zdroj:	Advances in Space Research. 48:1606-1612
ISSN:	0273-1177
Popis:	Statistical and spectral analyses are performed to investigate variations of two ionosphere F2 layer key parameters, the critical frequency (foF2) and the peak height (hmF2), that were measured over Irkutsk (52.5°N, 104.0°E) from December 2006 to January 2008 under solar minimum. The analyses showed that both parameters contain quasi-harmonic oscillations with periods of T n = 24/ n hours ( n = 1–7), among which the diurnal ( n = 1) and semidiurnal ( n = 2) ones are the strongest. Seasonal variations are explored of mean and median values, spectrum, amplitude, and phase of the diurnal and semidiurnal components of foF2 and hmF2.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1731a798030387600ec1eacd2231bbbf https://doi.org/10.1016/j.asr.2011.08.006 Zobrazit plný text záznamu Full Text from ScienceDirect