Chilean Liquefaction Surface Manifestation and Site Characterization Database

Seismic sources differ significantly from great megathrust to shallow crustal earthquakes in several aspects, yet we analyze them in many engineering applications as if they were similar. This work is framed within the study of the liquefaction behaviour of sites subjected to subduction events. To pursue the analysis of subduction triggered liquefaction, we must first have a database with observations of surface manifestation of liquefaction on such events, seismic demand, and site characterization. We present a database focused on the last three large events that affected Chile since 2010, but include some sites from other subduction events as well. This database has more than 200 sites, including surface manifestation of liquefaction; geotechnical data such as CPT and SPT logs, grain size distribution, and Atterberg limits; geophysical data including shear-wave velocity profiles, dispersion curves, and horizontal to vertical spectral ratios; surface intensity estimations at each site including PGA, PGV, and spectral ordinates.