Critical frequencies of the ionospheric $F_1$ and $F_2$ layers during the last four solar cycles: sunspot group type dependencies

The long term solar activity dependencies of ionospheric F$_1$ and F$_2$ regions' critical frequencies ($f_0F_1$ and $f_0F_2$) are analyzed for the last four solar cycles (1976--2015). We show that the ionospheric F$_1$ and F$_2$ regions have different solar activity dependencies in terms of th...

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Hauptverfasser:	Yiğit, Erdal, Kilcik, Ali, Elias, Ana Georgina, Donmez, Burcin, Ozguc, Atila, Yurchshyne, Vasyl, Rozelot, Jean-Pierre
Format:	Artikel
Sprache:	eng
Schlagworte:	Physics - Atmospheric and Oceanic Physics Physics - Earth and Planetary Astrophysics Physics - Solar and Stellar Astrophysics Physics - Space Physics
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