(05.26.2017) REASSESS V2.0 (beta) HAS BEEN RELEASED:REASSESS software is a stand-alone user-friendly software for the probabilistic assessment of seismic hazard. REASSESS V 2.0 performs (i) site-specific and (ii) multi-site seismic hazard analysis. For (i) it computes hazard curves, uniform hazard spectra, disaggregation and conditional mean spectra at a specific site. For (ii) it computes the probability of observing any given number of joint exceedances of a ground motion intensity measure at a set of sites in a given time interval, the total number of exceedances at multiple locations in any time interval, and the number of sites experiencing at least one exceedance in a given time interval. Seismic sources can be either zones or individual faults. REASSESS also is able to account for model uncertainty, in fact, logic trees can be built based on alternatives for the source's annual rate of earthquake occurrence, magnitude distribution and ground motion prediction equation. Finally REASSESS allow to perform sequence-based probabilistic seismic hazard analysis; i.e., hazard analysis including aftershocks.

REFERENCES: The current main reference for REASSESS is:

Chioccarelli E., Cito P., Iervolino I., Giorgio M. (2018) REASSESS V2.0: software for single- and multi-site probabilistic seismic hazard analysis. Bulletin of Earthquake Engineering. DOI 10.1007/s10518-018-00531-x

DISCLAIMER: REASSESS may be used for free (FOR NON-COMMERCIAL PURPOSES ONLY). The authors have made every effort in order to ensure that the software functions accurately; all responsibility regarding the correctness of obtained results resides with the user.


The map of institutions testing REASESS

REASSESS was developed within the 2014-2017 AXA-DiSt (Dipartimento di Strutture per l’Ingegneria e l’Architettura, Università degli Studi di Napoli Federico II) research program, funded by AXA-Matrix Risk Consultants (Milan, Italy). It is licensed under a Creative Commons Attribution - Non commercial - Non derived 4.0 International; based on a work at; permissions beyond the scope of this license may be available at iunio.iervolino[at]