What do we know without the catalog? Eliciting prior beliefs from experts for aftershock models
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Abstract
Fitting parametric seismological models to earthquake catalogs often comes with numerical challenges, especially when catalogs are small. An alternative way to quantify parameter values for a seismic region is by eliciting expert opinions on the seismological characteristics that each parameter corresponds to. For instance, expert beliefs on aftershock patterns can be formulated into prior distributions for aftershock parameters, for example, for the epidemic‐type aftershock sequence (ETAS) model. We illustrate such a method by not only eliciting priors for ETAS parameters for the Pacific Northwest (PNW), a subduction zone with a complex tectonic environment, but also a relatively small catalog. We compare these priors with those suggested by the ETAS literature for global subduction zones, discussing implications for aftershock forecasting for the PNW.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | What do we know without the catalog? Eliciting prior beliefs from experts for aftershock models |
| Series title | The Seismic Record |
| DOI | 10.1785/0320240008 |
| Volume | 4 |
| Issue | 4 |
| Publication Date | October 18, 2024 |
| Year Published | 2024 |
| Language | English |
| Publisher | Seismological Society of America |
| Contributing office(s) | Earthquake Science Center |
| Description | 9 p. |
| First page | 259 |
| Last page | 267 |