30 citations · 170 across the 9 of their papers we have counts for
9 papers
2D Hybrid method:Case of VLF signal amplitude variations in the time vicinity of an earthquake
Andjelka B. Kovacevic, Aleksandra Nina, Luka C. Popovic +1
Extraction of information in the form of oscillations from noisy data of natural phenomena such as sounds, earthquakes, ionospheric and brain activity, and various emissions from c…
Detection of short term response of the low ionosphere on gamma ray bursts
Aleksandra Nina, Saša Simić, Vladimir A. Srećković +1
In this paper, we study the possibility of detection of short term terrestrial lower ionospheric response to gamma ray bursts (GRBs) using a statistical analysis of perturbations o…
Low ionospheric reactions on tropical depressions prior hurricanes
Aleksandra Nina, Milan Radovanović, Boško Milovanović +3
We study the reactions of the low ionosphere during tropical depressions (TDs) which have been detected before the hurricane appearances in the Atlantic Ocean. We explore 41 TD eve…
Contribution of solar hydrogen Lyα line emission in total ionization rate in ionospheric D-region during the maximum of solar X-flare
Aleksandra Nina, Vladimir M. Čadež, Jovan Bajčetić
The solar Lyα line emission can be considered as the dominant source of ionization processes in the ionospheric D-region at altitudes above 70 km during unperturbed conditions. How…
Behaviour of electron content in the ionospheric D-region during solar X-ray flares
M. Todorović Drakul, V. M. Čadež, J. Bajčetić +3
One of the most important parameters in ionospheric plasma research also having a wide practical application in wireless satellite telecommunications is the total electron content…
Ionospheric D-region temperature relaxation and its influences on radio signal propagation after solar X-flares occurrence
Jovan Bajčetić, Aleksandra Nina, Vladimir M. Čadež +1
In this paper our attention is focused on relations between radio signal propagation characteristics and temperature changes in D-region af- ter solar X-flare occurrence. We presen…
Diagnostics of plasma in the ionospheric D-region: detection and study of different ionospheric disturbance types
Aleksandra Nina, Vladimir M. Čadež, Luka Č. Popović +1
Here we discuss our recent investigations of the ionospheric plasma by using very low and low frequency (VLF/LF) radio waves. We give a review of how to detect different low ionosp…
Electron production by solar Ly-α line radiation in the ionospheric D-region
Aleksandra Nina, Vladimir M. Čadež
The hydrogen Ly-α line has a dominant influence in photo-ionization processes in the unperturbed terrestrial ionospheric D region. In this paper, we present a procedure of calculat…
The influence of solar spectral lines on electron concentration in terrestrial ionosphere
A. Nina, V. Cadez, V. A. Sreckovic +1
One of the methods of detection and analysis of solar flares is observing the time variations of certain solar spectral lines. During solar flares, a raise of electron concentratio…