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The Effect of IMF-Bz and F10.7 Solar Flux on Neutral Molecule Density of Ionospheric E-Region



Author(s)

Ramazan Atıcı1 and Serhat Korlaelçi2

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DOI:10.17265/2159-5348/2017.03.009

1. The Department of Basic Education, Mus Alparslan University, Mus 49250, TURKEY 2. The Department of Physics, Mus Alparslan University, Mus 49250, TURKEY

In this study, the relationship between the neutral components (N2 and O2) in the E-region of the ionosphere (at 110 km altitude) for the Singapore (01.23 N; 103.55 E) station in the equatorial region and the F10.7 solar flux and z-component of Interplanetary Magnetic Field (IMF-Bz) was investigated. This relationship was determined by means of statistical multiple regression model. As a result, it was observed that the changes in F10.7 solar flux and IMF-Bz were inversely proportional to the changes in N₂ and O₂. 92% and 83% of changes in N₂ and O₂ were found to be explained by F10.7 solar flux and IMF-Bz, respectively. When the F10.7 solar flux is changed by 1 s.f.u., it causes a decrease of 2.61×10¹⁴ m^-3 in N₂ and 2.96×10¹⁴ m-³ in O₂. Change of 1 nT in IMF-Bz causes a decrease of 9.95×10¹⁵ m^-3 in N₂ and 1.69×10¹⁵ m^-3 in O₂.

Dynamo region, F10.7 solar flux, IMF-Bz, ionospheric-E-region, neutral density.