| The Internet is a complex system, whose temporal behavior is highly
nonstationary and exhibits sudden drastic changes regarded as main
shocks or catastrophes. Here, analyzing a set of time series data
of round-trip time measured in echo experiment with the Ping Command,
the property of aftershocks (i.e., catastrophes of smaller scales)
after a main shock is studied. It is found that the aftershocks
obey Omoris law . Thus, the Internet shares with earthquakes and
financial market crashes a common scale-invariant feature in the
temporal patterns of aftershocks.
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