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The 2021 seismic hazard model for Slovenia (SHMS21): overview and results

机译：The 2021 seismic hazard model for Slovenia (SHMS21): overview and results

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摘要

Slovenia is an earthquake-prone country with a moderate seismic hazard, characterized by relatively long recurrence intervals for strong earthquakes. With newly compiled data and revised info on active faults of the region, we are now able to supplement and enhance the probabilistic seismic hazard assessment, which was previously based mainly on the seismic catalog. The core of the seismic hazard model is the seismogenic source model combining various seismogenic representations i.e. area and gridded sources, and active faults. The ground motion model is characterized by a backbone model with regionalized parameters, which was also used to update the European seismic hazard model. We considered epistemic uncertainty in the most influential input parameters, implemented in a logic tree with 1377 branches. Considering the existing and forthcoming requests of the seismic design standard-Eurocode 8, we have developed the peak ground acceleration map of Slovenia and spectral acceleration maps for ten spectral periods, as well as seismic hazard curves and spectra for selected locations. The highest peak ground acceleration values (0.325 g) are at the western border of Slovenia with Italy. Other high-hazard areas extend across the Dinarides, in southeast Slovenia, and around the capital Ljubljana.

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