  The earth's ionosphere is well recognized as a dynamical system and
non-linearly coupled with the magnetosphere above and natural atmosphere
below.The shape and time variability of the ionosphere indeed shows chaos,
pattern formation, random behavior and self-organization. The present paper
studies the propriety of Multifractal Detrended Fluctuation Analysis (MF-DFA)
technique for the ionospheric scintillation index time series. MF-DFA is used
to identify the scaling behavior of the ionospheric scintillation time-series
data of two different nature.The obtained results show the robustness and the
relevancy of the MF-DFA technique for the ionospheric scintillation index time
series. The comparison of the MF-DFA results of original data to those of
shuffled and surrogate series shows that the multifractal nature of considered
time series is almost due to long-range correlations. Subsequently, the Hurst
exponents derived from two parallel methods namely Re-scaled range analysis
(R/S) and Auto Correlation Function (ACF) are also suggesting the presence of
long range correlation. The presented results in this work may be of assistance
for future modeling and simulation studies.
