A comparison of ground motions predicted through one-dimensional site response analyses and three-dimensional wave propagation simulations at regional scales

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dc.contributor.authorZhang, Wenyang
dc.contributor.authorDong, Yufeng
dc.contributor.authorCrempien, Jorge G. F.
dc.contributor.authorArduino, Pedro
dc.contributor.authorKurtulus, Asli
dc.contributor.authorTaciroglu, Ertugrul
dc.date.accessioned2025-01-20T16:18:28Z
dc.date.available2025-01-20T16:18:28Z
dc.date.issued2024
dc.description.abstractOne-dimensional (1D) site response analysis (SRA), which considers vertically propagating seismic waves from the bedrock to the surface, has been a common technique among geotechnical engineers to examine site-specific ground shaking. However, observations from past earthquakes and analytical studies indicate that idealizations ingrained in 1D SRA may be too severe to capture the ground truth, such as the omissions of spatial variability of soil properties, surface topography, and basin and directivity effects. Physics-based three-dimensional ground motion simulations (GMSs) can incorporate these factors and yield more reliable predictions. In this study, we utilize ground motions from 57 physics-based broadband (from 0 to 8-12 Hz) GMS for a region of Istanbul. A total of 2912 sites with experimentally measured soil profiles that are distributed over the 30 km-by-12.5 km area are also modeled as soil columns and analyzed through 1D SRA. The ground responses from 1D SRA and three-dimensional (3D) GMS are then compared for all 57 earthquake scenarios. These systematic comparisons are then used for examining model features that are correlated with variations in the ratios of various ground motion intensity measures (IMs) and for developing regression-based formulas that can be used for determining simple factors for the considered region to correctly scale (up or down) the site-specific ground motion intensities obtained from 1D SRA, including peak ground acceleration (PGA), peak ground velocity (PGV), and spectral acceleration (Sa) values.
dc.fuente.origenWOS
dc.identifier.doi10.1177/87552930241231935
dc.identifier.eissn1944-8201
dc.identifier.issn8755-2930
dc.identifier.urihttps://doi.org/10.1177/87552930241231935
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90648
dc.identifier.wosidWOS:001215168200002
dc.issue.numero2
dc.language.isoen
dc.pagina.final1234
dc.pagina.inicio1215
dc.revistaEarthquake spectra
dc.rightsacceso restringido
dc.subjectPhysics-based ground motion simulations
dc.subjectregional-scale analysis
dc.subject3D versus 1D site response analysis
dc.subjectsite amplification
dc.subjectsite classification
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleA comparison of ground motions predicted through one-dimensional site response analyses and three-dimensional wave propagation simulations at regional scales
dc.typeartículo
dc.volumen40
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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