Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 407, Issue -, Pages 175-184Publisher
ELSEVIER
DOI: 10.1016/j.physa.2014.03.093
Keywords
Earthquake networks; Complex networks; Space-time influence domain; Scale-free; Small-world; Omori law
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Funding
- National Natural Science Foundation of China [60973022]
- National Science & Technology Pillar Program [2012BAH82F04]
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A new construction method of earthquake networks based on the theory of complex networks is presented in this paper. We propose a space-time influence domain for each earthquake to quantify the subsequence of earthquakes which are directly influenced by the former earthquake. The size of the domain is according to the magnitude of earthquake. In this way, the seismic data in the region of California are mapped to a topology of earthquake network. It is discovered that the earthquake networks in different time spans behave as scale-free networks. This result can be interpreted in terms of the Gutenberg-Richter law. Discovery of small-world characteristic is also reported on the earthquake network constructed by our method. The Omori law emerges as a feature of seismicity for the out-going links of the network. These characteristics highlight a novel aspect of seismicity as a complex phenomenon and will help us to reveal the internal mechanism of seismic system. (C) 2014 Elsevier B.V. All rights reserved.
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