New Zealand Statistical Association

NZSA 2009

Victoria University of Wellington

Shaochuan Lu

Victoria University of Wellington

Occurrence patterns of New Zealand deep earthquakes: Characterized by MMPP and its extensions

In this poster, we suggest the main occurrence pattern of the New Zealand deep earthquakes, in a relatively large time scale, is the time-varying seismic activities. The mechanisms and reasons behind this time-varying behavior are still not well understood. We propose a switching Poisson model, which is a Poisson process with the Poisson rates switching between two levels according to an unobserved two-state Markov chain, to characterize the time-varying seismic activities.
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