PEER Strong Motion Database

The database contains 143 earthquakes from tectonically active regions. A complete list is available, along with information on the distribution of mechanisms, magnitudes, and distances.

Documentation is provided on USGS, NEHRP, and UBC site classifications and the three-letter Geomatrix site classification used in the database. Documentation is also provided on the numeric site codes from the Taiwan Central Weather Bureau used instead of the Geomatrix classications for the 1999 ChiChi Taiwan earthquake.

Each record has three components and for each component, separate files for acceleration, velocity, displacement, and response spectra.

To download records, search or browse to select the records of interest first.

The records in this database were chosen for their value in engineering analysis and use in PEER engineering studies. They were processed in a uniform manner, with individual components individually filtered.

Many people have reviewed this site and provided notes and updates, including corrections to the data files.