Akademik Veri Yönetim Sistemi
Eurasia Geoscience Congress and Exhibition (EGCE2025), Antalya, Türkiye, 2 - 07 Kasım 2025, (Yayınlanmadı)
Accurate estimation of site response is important for
seismic hazard and risk assessments. Conventional one-dimensional (1D)
analyses, however, usually rely on fixed values for input parameters such as
shear-wave velocity, damping ratio, unit weight, and layer thickness. In
practice, these parameters have inherent uncertainties that can significantly
affect site response predictions. This study presents preliminary work on
evaluating the influence of input parameter variability on 1D site response
analyses. Equivalent-linear analyses are performed in DEEPSOIL for a
representative soil profile, with variations applied to key parameters (e.g.,
shear-wave velocity, damping). Resulting site response parameters such as peak
ground acceleration (PGA), spectral accelerations at 0.2 s and 1.0 s, and the
fundamental frequency (f₀) are compared across scenarios. Initial results
highlight the relative importance of uncertainty in key parameters, especially
shear-wave velocity, in the variability of the site response. The outcomes aim
to guide future probabilistic modeling efforts and provide insight into which
parameters should be prioritized during field investigations.