@article{ref1,
title="Small-World Structure of Earthquake Network",
journal="Physica A: statistical mechanics and its applications",
year="2004",
author="Abe, S. and Suzuki, N.",
volume="337",
number="1-2",
pages="357-362",
abstract="Discoveries of the scale-free and small-world features are reported on the network constructed from the seismic data. It is shown that the connectivity distribution decays as a power law, and the value of the degrees of separation, i.e., the characteristic path length, between two earthquakes (as the vertices) chosen at random takes a small value between 2 and 3. The clustering coefficient is also calculated and is found to be about 10 times larger than that in the case of the completely random network. These features highlight a novel aspect of seismicity as a complex phenomenon.<p />",
language="",
issn="0378-4371",
doi="",
url="http://dx.doi.org/"
}