Chile Strong Ground Motion Flatfile

The Nazca‐South American plate boundary produces large‐magnitude events (M w > 8) every 20 years on the coast of Chile. This work describes a public ground motion database that contains 3,572 records from 477 earthquakes and 181 seismic stations, which includes the recent 2015 M w 8.3 Illapel earthquake. The data set is controlled by subduction interface and inslab events. The oldest event included is Valparaiso (1985), and the magnitude span is 4.6–8.8 M w . The source‐to‐site distance metrics reported are the closest distance to the rupture plane ( R rup ), epicentral ( R epi ) and hypocentral ( R hyp ) distances, with a range for R rup from 20 to 650 km. Site characterization is based on V S 30 , ranging from 110 to 1,951 m/s. Intensity measures included are peak ground acceleration, spectral acceleration values from 0.01 to 10 s, Arias intensity, and peak ground velocity. Each record was uniformly processed component by component. A flatfile with the related metadata and the spectral accelerations from processed ground motions is available at NEEShub ( http://doi.org/10.17603/DS2N30J ; Bastías and Montalva 2015).