  We base our study on the statistical analysis of the Rigan earthquake 2010
December 20, which consists of estimating the earthquake network by means of
virtual seismometer technique, and also considering the avalanche-type dynamics
on top of this complex network.The virtual seismometer complex network shows
power-law degree distribution with the exponent $\gamma=2.3\pm 0.2$. Our
findings show that the seismic activity is strongly intermittent, and have a
\textit{cyclic shape} as is seen in the natural situations, which is main
finding of this study. The branching ratio inside and between avalanches reveal
that the system is at (or more precisely close to) the critical point with
power-law behavior for the distribution function of the size and the mass and
the duration of the avalanches, and with some scaling relations between these
quantities. The critical exponent of the size of avalanches is $\tau_S=1.45\pm
0.02$. We find a considerable correlation between the dynamical Green function
and the nodes centralities.
