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    PSHA after a strong earthquake: hints for the recovery

    Peruzza, L. and Gee, R. and Pace, B. and Roberts, Gerald P. and Scotti, O. and Visini, F. and Benedetti, L. and Pagani, M. (2017) PSHA after a strong earthquake: hints for the recovery. Annals of Geophysics , ISSN 2037-416X.

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    Abstract

    We perform aftershock probabilistic seismic hazard analysis (APSHA) of the ongoing aftershock sequence following the Amatrice August 24th, 2016 Central Italy earthquake. APSHA is a time-dependent PSHA calculation where earthquake occurrence rates decrease after the occurrence of a mainshock following an Omori-type decay. In this paper we propose a fault source model based on preliminary evidence of the complex fault geometry associated with the mainshock. We then explore the possibility that the aftershock seismicity is distributed either uniformly or non-uniformly across the fault source. The hazard results are then computed for short-intermediate exposure periods (1-3 months, 1 year). They are compared to the background hazard and intended to be useful for post-earthquake safety evaluation.

    Metadata

    Item Type: Article
    Keyword(s) / Subject(s): Seismic hazard, Fault source, Central Italy
    School: Birkbeck Schools and Departments > School of Science > Earth and Planetary Sciences
    Depositing User: Administrator
    Date Deposited: 30 May 2017 16:09
    Last Modified: 23 Oct 2017 13:25
    URI: http://eprints.bbk.ac.uk/id/eprint/18821

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