Data for Site-response Ground-motion Adjustment, in Simulation Data for Basin Amplification Effects on Bridge Seismic Performance under M9 Cascadia Subduction Zone Earthquakes

This simulation contains an equivalent-linear site-response workflow for converting baseline ground motions into soil-adjusted ground motions for bridge seismic analysis. The model uses user-specified time-averaged shear-wave velocity in the upper 30 m (Vs30) to simulate soil profile based on the soil velocity model of Wirth et al. (2020). Equivalent-linear propagation utilizes Python Seismic Response Analysis (PySRA). The dataset is organized with the simulation script and municipality-based folders containing bridge-specific baseline and soil-adjusted motion files. Baseline M9 ground motions were developed by Frankel et al. (2018). This model can be reused to generate site-adjusted motions for additional locations. Standardized plain-text input and output formats and documented user settings support transparent reuse.