jstewart | Southern California Earthquake Center

Jonathan P. Stewart

UCLA Samueli School of Enginering

Professor

Expertise: Ground motion modeling, site effects, ground failure, soil-structure interaction, post-earthquake reconnaissance

Website

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 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)

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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 Apr 03, 2023.

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