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A Unified Probabilistic Framework for Seismic Hazard Analysis

Warner Marzocchi, & Thomas H. Jordan

Published September 26, 2017, SCEC Contribution #7269

The proper scientific interpretation of the seismic hazard estimates requires a probabilistic framework that admits epistemic uncertainties on aleatory variables. This is not straightforward because, to subjectivists, all probabilities are epistemic, whereas to frequentists, all probabilities are aleatory. We illustrate the inadequacy of purely subjectivist and purely frequentist interpretations of probability by examining the probabilistic meaning of the mean hazard. We advocate a unified approach based on experimental concepts that define aleatory variability in terms of exchangeable sequences of observations, and we show how experimental concepts allow frequentist testing of models based on expert opinion.

Marzocchi, W., & Jordan, T. H. (2017). A Unified Probabilistic Framework for Seismic Hazard Analysis. Bulletin of the Seismological Society of America, 107(6), 2738-2744. doi: 10.1785/0120170008.

Related Projects & Working Groups
CSEP, Earthquake Forecasting and Predictability