Abstract
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.
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Acknowledgments
We thank the Roads Department of the Ministry of Public Works (MOP) for providing essential data for the development of this work. We also acknowledge Ruz and Vukasovic Engineers for providing valuable data on many sites. Finally, special thanks go to the geotechnical research group at University of Concepción for the fieldwork performed to collect and process data.
This work was partially funded by the National Commission for Scientific and Technological Research (ANID) through the projects FONDEF ID16i10157, FONDEF ID16i20157, the Millennium Nucleus CYCLO, grant NC160025, funded by the Millennium Scientific Initiative (ICM) this support is greatly acknowledged. Site Response Observatory on Alluvial Basins funded by FONDEQUIP under grant EQM160015, provided valuable data for some of the sites.
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Montalva, G.A., Ruz, F., Escribano, D., Paredes, F., Bastías, N., Espinoza, D. (2022). Chilean Liquefaction Surface Manifestation and Site Characterization Database. In: Wang, L., Zhang, JM., Wang, R. (eds) Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 2022). PBD-IV 2022. Geotechnical, Geological and Earthquake Engineering, vol 52. Springer, Cham. https://doi.org/10.1007/978-3-031-11898-2_173
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