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Diagnostic Analysis of Space-Time Branching Processes for Earthquakes

  • Jiancang Zhuang
  • Yosihiko Ogata
  • David Vere-Jones
Part of the Lecture Notes in Statistics book series (LNS, volume 185)

Summary

It is natural to use a branching process to describe occurrence patterns of earthquakes, which are apparently clustered in both space and time. The clustering features of earthquakes are important for seismological studies.

Based on some empirical laws in seismicity studies, several point-process models have been proposed in literature, classifying seismicity into two components, background seismicity and clustering seismicity, where each earthquake event, no matter it is a background event or generated by another event, produces (triggers) its own offspring (aftershocks) according to some branching rules. There are further ideas on probability separation of background seismicity from the clustering seismicity assuming a constant background occurrence rate throughout the whole studied region and other authors proposed a stochastic declustering method and made the probability based declustering method practical.

In this paper, we show some useful graphical diagnostic methods for improving model formulation.

Key words

Branching processes Patterns of earthquakes Point process models Stochastic declustering 

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Copyright information

© Springer Science+Business Media Inc. 2006

Authors and Affiliations

  • Jiancang Zhuang
    • 1
  • Yosihiko Ogata
    • 1
  • David Vere-Jones
    • 2
  1. 1.Institute of Statistical MathematicsJapan
  2. 2.Victoria University of WellingtonNew Zealand

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