For Non-Poissonian seismicity model, Crisis is using the probabilities to compute seismic hazard. I would like to know what formulations Crisis is using to compute the hazard using probabilities instead of annual exceedance rates? I looked into the manual of Crisis but I didn't find anything related to the formulations for non-Poissonian seismicity models.
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Dear Shweta,
In the R-CRISIS Help Menu -> Basic theoretical background, you will find a brief description of the hazard computation algorithm used by R-CRISIS. Equation 7, presented below, is the one used by R-CRISIS to compute seismic hazard for situations in which the sources are spatially distributed (k=1,…,N), there are earthquakes of various magnitudes (Mi, i=1,…Nm) and the earthquake occurrence probabilities in known time frames Tj at source k are given by Pk(s,Mi,Tj), that is, the probability of having s events of magnitude Mi in the next Tj years at source k.
As may you see, the calculation depends of probabilities, values contained in the .nps file which describes a Generalized Non-Poissonian model.
Thank you for your preference and interest in R-CRISIS.
Best regards,
