Abstract Title: *
THE EFFECTS OF SOLAR ACTIVITY ON THE TERRESTRIAL LOWER IONOSPHERE

Authors: *
Vladimir A. Srećković

Institution: *
Institute of Physics, University of Belgrade, P.O. Box 57, 11001 Belgrade, Serbia

Preferred format: *
poster presentation

Abstract Text: *
Solar flare X-ray energy can cause strong enhancements of the electron density in the Earth’s
atmosphere. This intense solar radiation and activity can cause sudden ionospheric
disturbances (SIDs) and further create ground telecommunication interferences, as well as
some natural disasters and caused considerable material damage. The focus of this contribution
is on the study of these changes induced by solar X-ray flares using narrowband Very Low
Frequency (VLF, 3-30 kHz) and Low Frequency (LF, 30-300 kHz) radio signal analysis. The
model computation and simulation are applied to acquire the electron density enhancement
induced by intense solar radiation. The obtained results confirmed the successful use of applied
technique for detecting space weather phenomena such as solar explosive events as well for
describing and modeling the ionospheric electron density.