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Simulated ground motion dataset in the Azores Plateau, Portugal, on rock and soil sites

February 2, 2026

Building on a previously developed bedrock dataset, this study extends the Azores Plateau ground motion simulations to include soil-amplified records and introduces a comprehensive validation framework. Soil amplification is modeled using one-dimensional soil profiles. A stochastic source-based approach is employed to generate the dataset, incorporating randomization of input-model parameters to account for the aleatory uncertainty in seismic activity. The accuracy of the dataset is verified through a comprehensive validation framework, showing that the randomization effectively captures variance and inter-period correlation observed in records. This work provides a robust dataset for advancing seismic hazard and risk assessment in the Azores Plateau.

Publication Year 2026
Title Simulated ground motion dataset in the Azores Plateau, Portugal, on rock and soil sites
DOI 10.1080/13632469.2026.2619832
Authors Shaghayegh Karimzadeh, S.M. Sajad Hussaini, Daniel Caicedo, Alexandra Carvalho, Sanaz Rezaeian, Paulo B. Lourenco
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Earthquake Engineering (JEE)
Index ID 70273808
Record Source USGS Publications Warehouse
USGS Organization Geologic Hazards Science Center - Seismology / Geomagnetism
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