Aftershock identification: methods and new approaches

SUMMARY The problem of aftershock identification in earthquake catalogues is studied. Some empirical methods are considered and quantitavely analysed. Game theory approach is applied to formulate the problem allowing a whole class of optimal methods of aftershock identification. Each method is optimal depending on the goals and gives the best trade-off between the number of missed aftershocks and the number of incorrectly identified ones. Some illustrations of the new approach to the aftershock identification problem are presented.

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