Seismicity characteristics based on the spatiotemporal ETAS model in North China from the perspective of different cut-off magnitude.

ABSTRACT: To explore the effect of the cut-off magnitude on the declustering of earthquake sequences, the calculation of seismicity parameters, the earthquake occurrence rate, and the hazard level of North China at present, we employed a stochastic declustering method based on the spatio-temporal ETAS model to decluster under different the cut-off magnitudes. And we have undertaken comprehensive research on the declustered distribution characteristics, seismicity parameters, and earthquake occurrence rates. The research results show that the selections of the cut-off magnitudes can lead to certain differences in the declustering results. As the cut-off magnitude increases, the declustering rate shows a certain downward trend, and the Poisson characteristics become more prominent. The stochastic decl

SUBMITTER: Bi J 

PROVIDER: S-EPMC12279102 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature