Exciting news! We're transitioning to the Statewide California Earthquake Center. Our new website is under construction, but we'll continue using this website for SCEC business in the meantime. We're also archiving the Southern Center site to preserve its rich history. A new and improved platform is coming soon!
Jonathan P. Stewart
UCLA Samueli School of Enginering
Professor
Expertise: Ground motion modeling, site effects, ground failure, soil-structure interaction, post-earthquake reconnaissance
About Me
Publications
Jonathan P. Stewart is a Professor in the Civil & Environmental Engineering Department at UCLA, where he has been a faculty member since 1996. Stewart’s technical expertise is in geotechnical earthquake engineering and engineering seismology, with emphases on soil-structure interaction, ground motion characterization, performance of levees and other embankments, and ground failure. His work has impacted seismic guidelines and policy nationally and globally. Examples include the US National Seismic Hazard Maps and recommended procedures for the seismic assessment of structures.
He is a former Chief Editor for the ASCE Journal of Geotechnical and Geoenvironmental Engineering and is now Past Editor of Earthquake Spectra.
SCEC Science Planning Committee, Group Co-Leader (2016 - 2022)
He is a former Chief Editor for the ASCE Journal of Geotechnical and Geoenvironmental Engineering and is now Past Editor of Earthquake Spectra.
SCEC Participation
Current Roles
SCEC Board of Directors, Core Institution Member (2022 - Present)Past Roles
SCEC Mentor (2022)SCEC Science Planning Committee, Group Co-Leader (2016 - 2022)
Nweke, C. C., K C, S., Graves, R. W., & Stewart, J. P. (2023, 09). Vision for Validation and Calibration of Physics-Based Ground Motion Simulation for Applications in California. Poster Presentation at 2023 SCEC Annual Meeting. SCEC Contribution 13296
K C, S., Nweke, C. C., Stewart, J. P., & Graves, R. W. (2023, 09). Comparison of Site-Adjustment Methods in Broadband Simulated Waveforms for Moderate Magnitude Earthquakes. Poster Presentation at 2023 SCEC Annual Meeting. SCEC Contribution 13231
Pretell, R., Buckreis, T., Brandenberg, S. J., & Stewart, J. P. (2023, 09). A Bayesian approach for developing ground motion spatial correlation models. Poster Presentation at 2023 SCEC Annual Meeting. SCEC Contribution 13186
K C, S., Nweke, C. C., Stewart, J. P., & Graves, R. W. (2023, 03). Reconciling Bias in Moderate Magnitude Earthquake Ground Motions Predicted by Numerical Simulations. Poster Presentation at Lamont-Doherty Seismology Student Workshop. SCEC Contribution 12717
Bayless, J., Stewart, J. P., Nweke, C. C., & Condon, S. J. (2022, 09). Fourier-Based Site Response of Southern California Sedimentary Basins. Poster Presentation at 2022 SCEC Annual Meeting. SCEC Contribution 12507
Ledesma, J., Buckreis, T. E., & Stewart, J. P. (2022, 09). Site Characterization Using Seismic Velocity Testing and its Incorporation into a Relational Database. Poster Presentation at 2022 SCEC Annual Meeting. SCEC Contribution 12326
Rezaeian, S., Stewart, J. P., Luco, N., & Goulet, C. A. (2022, 09). Findings from a Decade of Ground Motion Simulation Validation Research and a Path Forward. Poster Presentation at 2022 SCEC Annual Meeting. SCEC Contribution 12238
Hudson, K. S., Zimmaro, P., Brandenberg, S. J., & Stewart, J. P. (2021, 08). Laboratory Component of Next Generation Liquefaction Database and System Analysis of Important Case Histories. Poster Presentation at 2021 SCEC Annual Meeting. SCEC Contribution 11656
Ramos-Sepulveda, M. E., Parker, G. P., Li, M., Ilhan, O., Uysal, H., Hashash, Y., Rathje, E., & Stewart, J. P. (2021, 08). Joint Calibration of NGA-East GMMs and Site Amplification Models Against CENA Ground Motions . Poster Presentation at 2021 SCEC Annual Meeting. SCEC Contribution 11551
Stewart, J. P. (2021, 08). Spatial distributions of liquefaction for seismic risk analysis. Oral Presentation at 2021 SCEC Annual Meeting. SCEC Contribution 11221
Bayless, J., & Stewart, J. P. (2020, 08). Region-specific Fourier-based site amplification modeling. Poster Presentation at 2020 SCEC Annual Meeting. SCEC Contribution 10394
Stewart, J. P., Nweke, C., Brandenberg, S. J., Goulet, C. A., & Graves, R. W. (2020, 07). Modeling site response effects in sedimentary basins. Oral Presentation at 2020 SCEC Annual Meeting. SCEC Contribution 10206
Stewart, J. P., Brandenberg, S. J., Wang, P., Nweke, C., Hudson, K. S., Mazzoni, S., Bozorgnia, Y., Hudnut, K. W., Davis, C. A., Ahdi, S. K., Zareian, F., Fayaz, J., Koehler, R. D., Chupik, C., Pierce, I., Williams, A., Akciz, S. O., Hudson, M. B., Kishida, T., Brooks, B. A., Gold, R. D., Ponti, D. J., Scharer, K. M., McPhillips, D., Ericksen, T., Hernandez, J., Patton, J. R., Olson, B., Dawson, T., Treiman, J. A., DuRoss, C. B., Blake, K., Bachhuber, J. L., Madugo, C. M., Sun, J., Donnellan, A., Lyzenga, G. A., Conway, E. M., & Goulet, C. A. (2019, 08). Engineering and Geological Effects of the July 2019 Ridgecrest Earthquake Sequence. Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9907
Mazzoni, S., Kashida, T., Wang, P., Ahdi, S. K., Bozorgnia, Y., & Stewart, J. P. (2019, 08). Strong Ground Motions from 2019 Ridgecrest Earthquake Sequence Mainshocks. Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9774
Bayless, J., Skarlatoudis, A., & Stewart, J. P. (2019, 08). Region-Specific Fourier-Based Site Amplification Modeling. Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9322
Ahdi, S. K., Sadiq, S., Ilhan, O., Bozorgnia, Y., Hashash, Y., Kwak, D., Park, D., Yong, A., & Stewart, J. P. (2018, 08). A Proposed Seismic Velocity Profile Database Model. Poster Presentation at 2018 SCEC Annual Meeting. SCEC Contribution 8386
Dreger, D. S., Beroza, G. C., Day, S. M., Goulet, C. A., Jordan, T. H., Spudich, P. A., & Stewart, J. P. (2013). Evaluation of SCEC Broadband Platform Phase 1 Ground Motion Simulation Results, (). SCEC Contribution 2039
Nweke, C. C., Stewart, J. P., Graves, R. W., Goulet, C. A., & Brandenberg, S. J. (2022). Validating Predicted Site Response in Sedimentary Basins from 3D Ground Motion Simulations. Earthquake Spectra,. doi: 10.1177/87552930211073159. SCEC Contribution 11722
Goulet, C. A., Wang, Y., Nweke, C. C., Tang, B., Wang, P., Hudson, K. S., Ahdi, S. K., Meng, X., Hudson, M. B., Donnellan, A., Lyzenga, G. A., Brandenberg, S. J., Stewart, J. P., Gallien, T., & Winters, M. A. (2021). Comparison of Near-Fault Displacement Interpretations from Field and Aerial Data for the M 6.5 and 7.1 Ridgecrest Earthquake Sequence Ruptures. Bulletin of the Seismological Society of America,. doi: 10.1785/0120200222. SCEC Contribution 11108
Nweke, C., Stewart, J. P., & Brandenberg, S. J. (2020). Site Response of Southern California Sedimentary Basins and Other Geomorphic Provinces. Los Angeles, US: Natural Hazards Risk and Resiliency Research Center, B. John Garrick Institute for the Risk Sciences, UCLA . doi: 10.34948/N3159F. SCEC Contribution 10965
Ahdi, S. K., Mazzoni, S., Kishida, T., Wang, P., Nweke, C., Kuehn, N. M., Contreras, V., Rowshandel, B., Stewart, J. P., & Bozorgnia, Y. (2020). Engineering Characteristics of Ground Motions Recorded in the 2019 Ridgecrest Earthquake Sequence. Bulletin of the Seismological Society of America, 110(4), 1474-1494. doi: 10.1785/0120200036. SCEC Contribution 10820
Zimmaro, P., Nweke, C. C., Hernandez, J. L., Hudson, K. S., Hudson, M. B., Ahdi, S. K., Boggs, M. L., Davis, C. A., Goulet, C. A., Brandenberg, S. J., Hudnut, K. W., & Stewart, J. P. (2020). Liquefaction and Related Ground Failure from July 2019 Ridgecrest Earthquake Sequence. Bulletin of the Seismological Society of America, 110(4), 1549-1566. doi: 10.1785/0120200025. SCEC Contribution 10179
Brandenberg, S. J., Wang, J., Buckreis, T., Issa, O., Yeung, J., Lyda, A., Gallien, T. W., Kim, Y., Lucey, J., Delisle, M., Winters, M. A., Pierce, M., Stewart, J. P., Lyzenga, G., Donnellan, A., Hudson, M. B., Ahdi, S. K., Davis, C. A., Meng, X., Goulet, C. A., Hudson, K., Nweke, C. C., Wang, P., & Yi, Z. (2020). Ground Deformation Data from GEER Investigations of Ridgecrest Earthquake Sequence. Seismological Research Letters, 91(4), 2024-2034. doi: 10.1785/0220190291. SCEC Contribution 10113
Stewart, J. P., Brandenberg, S. J., Wang, P., Nweke, C., Hudson, K. S., Mazzoni, S., Bozorgnia, Y., Goulet, C. A., Hudnut, K. W., Davis, C. A., Ahdi, S. K., Zareian, F., Fayaz, J., Koehler, R. D., Chupik, C., Pierce, I., Williams, A. M., Akciz, S. O., Hudson, M. B., & Kishida, T. (2019). Preliminary report on engineering and geological effects of the July 2019 Ridgecrest earthquake sequence. Geotechnical Extreme Event Reconnaissance Association, 1-69. doi: 10.18118/G6H66K. SCEC Contribution 10141
Afshari, K., & Stewart, J. P. (2016). Validation of Duration Parameters from SCEC Broadband Platform Simulated Ground Motions. Seismological Research Letters, 87(6), 1355-1362. doi: 10.1785/0220160086. SCEC Contribution 7094
Afshari, K., & Stewart, J. P. (2016). Physically Parameterized Prediction Equations for Significant Duration in Active Crustal Regions. Earthquake Spectra, 32(4), 2057-2081. doi: 10.1193/063015EQS106M. SCEC Contribution 6231
Atkinson, G. M., Seyhan, E., Stewart, J. P., & Boore, D. M. (2014). NGA-West2 Equations for Predicting PGA, PGV, and 5% Damped PSA for Shallow Crustal Earthquakes. Earthquake Spectra, 30(3), 1057-1085. doi: 10.1193/070113EQS184M. SCEC Contribution 8860
Dreger, D. S., Beroza, G. C., Day, S. M., Goulet, C. A., Jordan, T. H., Spudich, P. A., & Stewart, J. P. (2014). Validation of the SCEC Broadband Platform V14.3 Simulation Methods Using Pseudo Spectral Acceleration Data. Seismological Research Letters, 86(1), 39-47. doi: 10.1785/0220140118. SCEC Contribution 1983
Graves, R. W., Aagaard, B. T., Hudnut, K. W., Star, L. M., Stewart, J. P., & Jordan, T. H. (2008). Broadband Simulations for Mw 7.8 Southern San Andreas Earthquakes: Ground Motion Sensitivity to Rupture Speed. Geophysical Research Letters, 35(22). doi: 10.1029/2008GL035750. SCEC Contribution 1238
Last updated Sep 20, 2023.
