Abstract
The scale-free and small-world properties are studied in detail for the complex earthquake networks constructed from the seismic data sets taken from California (USA), Japan, Iran and Chile. It is found that, in all these geographical regions, both the exponent γ of the power-law connectivity distribution and the clustering coefficient C take the universal invariant values γ≈1 and C≈0.85, respectively, as the cell size, which is the scale of coarse graining needed for construction of network, becomes larger than a certain value. A possible physical interpretation is given to the emergence of such remarkable invariance.
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Abe, S., Pastén, D., Muñoz, V. et al. Universalities of earthquake-network characteristics. Chin. Sci. Bull. 56, 3697–3701 (2011). https://doi.org/10.1007/s11434-011-4767-6
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DOI: https://doi.org/10.1007/s11434-011-4767-6