Summary: 1D and advanced site response modeling (linear, equivalent-linear, nonlinear), validation using arrays, and NZ applications.
de la Torre CA, Cubrinovski M, Bradley BA, Bora SS. Examination of high PGA and short-period spectral accelerations on soft-soil sites from the New Zealand National Seismic Hazard Model. Earthquake Spectra. 2026. Vol. 42. No. 2. https://doi.org/10.1002/esp4.70008 (PDF)
Kuncar F, Bradley BA, de la Torre CA. Validating Vs30-based site amplification factors in hybrid broadband ground-motion simulation of small-magnitude earthquakes in New Zealand. Earthquake Spectra. 2026. Vol. 42. No. 1. https://doi.org/10.1002/esp4.70005 (PDF) (ESupplement)
Kuncar F, Bradley BA, de la Torre CA, Rodriguez-Marek A, Zhu C, Lee RL. Validating alternative methods to account for shallow site effects in hybrid broadband ground-motion simulation of small-magnitude earthquakes in New Zealand. Earthquake Spectra. 2025. Vol. 41. No. 5. pp. 3914-3948. https://doi.org/10.1177/87552930251377784 (PDF) (ESupplement)
Kuncar F, Bradley BA, de la Torre CA, Rodriguez-Marek A, Zhu C, Lee RL. Methods to account for shallow site effects in hybrid broadband ground-motion simulations. Earthquake Spectra. 2025. Vol. 41. No. 2. pp.1272-1313. https://doi.org/10.1177/87552930241301059 (PDF)
Lee RL, Cubrinovski M, Bradley BA. Site classification methodology for TS 1170.5 design spectra. Bulletin of the New Zealand Society of Earthquake Engineering. 2025. Vol. 58. No. 1. pp. 11-39. https://doi.org/10.5459/bnzsee.1686 (PDF)
de la Torre CA, Bradley BA, Kuncar F, Lee RL, Wotherspoon LM, Kaiser AE. Combining observed linear basin amplification factors with 1D nonlinear site-response analyses to predict site response for strong motions: Application to Wellington, New Zealand. Earthquake Spectra. 2024. Vol. 40. No. 1. pp. 143-173. https://doi.org/10.1177/875529302312097 (PDF)
Zhu C, Cotton F, Kawase H, Bradley BA. Separating Broad-Band Site Response from Single-Station Seismograms. Geophysical Journal International. 2023. Vol. 234. No. 3. pp. 2053-2065. https://doi.org/10.1093/gji/ggad187 (PDF)
de la Torre CA, Bradley BA, Stewart JP. Can modelling soil heterogeneity in 2D site response analyses improve predictions at vertical array sites? Earthquake Spectra. 2022. Vol 38. No 4. pp. 2451-2478. https://doi.org/10.1177/87552930221105107 (PDF)
de la Torre C, Bradley BA, McGann CR. 2D Geotechnical site response analysis including soil heterogeneity and wave scattering. Earthquake Spectra. 2022. Vol 38. No 2. pp. 1127-1147. https://doi.org/10.1177/87552930211056667 (PDF)
Kaklamanos J, Bradley BA, Moolacattu AN, Picard BM. Physical hypotheses for adjusting coarse profiles and improving 1D site response estimation assessed at 10 Kik-Net sites. Bulletin of the Seismological Society of America. 2020. Vol. 110, No. 3. pp. 1338-1358. https://doi.org/10.1785/0120190263 . (PDF)
de la Torre C, Bradley BA, Lee RL. Modelling nonlinear site effects in physics-based ground motion simulations of the 2010-2011 Canterbury earthquake sequence. Earthquake Spectra. 2020. Vol. 36, No. 2. pp. 856-879 https://doi.org/10.1177/8755293019891729 .(PDF)
Kaklamanos J, Bradley BA. Challenges in predicting seismic site response with 1D analyses: Conclusions from 114 Kik-Net vertical seismometer arrays. Bulletin of the Seismological Society of America. 2018. Vol 108, No 5A, pp. 2816-2838. https://doi-org/10.1785/0120180062 (PDF).
Jeong S, Bradley BA. Amplification of strong ground motions at Heathcote Valley during the 2010-2011 Canterbury earthquakes: The role of 2D nonlinear site response. Bulletin of the Seismological Society of America. 2017, Vol. 107, No 5. pp. 2131-2150. (link) (PDF).
Kaklamanos J, Bradley BA, Thompson EM, Baise JG. Critical parameters affecting bias and variability in site response analyses using Kik-net downhole array data. Bulletin of the Seismological Society of America 2013 Vol. 103, No 3, pp 1733-1749. (PDF) (link)