Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (3): 319-322.DOI: 10.12068/j.issn.1005-3026.2016.03.004

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Analysis Method of Seismic Sequence Based on Node Converging

XU Jiu-qiang, SONG Jia, HE Xuan, ZHAO Hai   

  1. School of Computer Science & Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2015-02-05 Revised:2015-02-05 Online:2016-03-15 Published:2016-03-07
  • Contact: SONG Jia
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Abstract: Based on space-time influence domain, an earthquake network was built, which had small-world and scale-free characteristics of complex network. The Sichuan seismic data were chosen between 1990 and 2010, most of which distributed on the Longmenshan fault. After node converging on the earthquake network, several seismic sequences from nodes were obtained, which mainly belonged to foreshock-mainshock-aftershock type. Through studying the energy changing of seismic sequences, the results indicated that a single earthquake’s energy changing does not show the law, but the sum energy of sequences with a certain size time window has periodicity change, and the energy center distributes on the Longmenshan central fault zone. All of these researches show that there is an important significance to recognize the regularity of earthquake using analysis method of seismic sequence based on node converging.

Key words: earthquake network, Longmenshan fault, node converging, seismic sequence, energy law

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