Origin and nonuniversality of the earthquake interevent time distribution.

نویسندگان

  • Sarah Touati
  • Mark Naylor
  • Ian G Main
چکیده

Many authors have modeled regional earthquake interevent times using a gamma distribution, whereby data collapse occurs under a simple rescaling of the data from different regions or time periods. We show, using earthquake data and simulations, that the distribution is fundamentally a bimodal mixture distribution dominated by correlated aftershocks at short waiting times and independent events at longer times. The much-discussed power-law segment often arises as a crossover between these two. We explain the variation of the distribution with region size and show that it is not universal.

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عنوان ژورنال:
  • Physical review letters

دوره 102 16  شماره 

صفحات  -

تاریخ انتشار 2009