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!
Ralph J. Archuleta
Department of Earth Science
University of California, Santa Barbara
University of California, Santa Barbara
Research Professor and Professor Emeritus
Expertise: Strong Motion Seismology
About Me
Publications
No bio available.
SCEC Deputy Director (2004 - 2006)
SCEC Science Planning Committee, Chair (2004 - 2006)
SCEC Science Planning Committee, Group Leader (1991 - 2002)
SCEC Board of Directors, Vice-Chair (1999 - 2001)
SCEC Mentor (1995 - 1997, 2000)
SCEC Participation
SCEC Board of Directors, Core Institution Member (1991 - 2001, 2007 - 2016)SCEC Deputy Director (2004 - 2006)
SCEC Science Planning Committee, Chair (2004 - 2006)
SCEC Science Planning Committee, Group Leader (1991 - 2002)
SCEC Board of Directors, Vice-Chair (1999 - 2001)
SCEC Mentor (1995 - 1997, 2000)
Ji, C., Archuleta, R. J., & Peyton, A. J. (2023, 09). Apparent stress and stress parameter of moderate earthquakes during the 2019 Ridgecrest, California, earthquake sequence: uncertainty in depth dependent stress variation. Poster Presentation at 2023 SCEC Annual Meeting. SCEC Contribution 13237
Ji, C., & Archuleta, R. J. (2021, 08). Average Static Stress Drop of Crustal Earthquakes Inferred From Source Spectra. Poster Presentation at 2021 SCEC Annual Meeting. SCEC Contribution 11586
Ji, C., & Archuleta, R. J. (2020, 03). Double corner frequency spectrum and its implications for the physics of the earthquake source. Oral Presentation at IASPEI Effects of Surface Geology. SCEC Contribution 10937
Ji, C., & Archuleta, R. J. (2020, 08). Refinements of UCSB Method Using a Double-Corner Frequency Source Spectrum . Poster Presentation at 2020 SCEC Annual Meeting. SCEC Contribution 10645
Archuleta, R. J., & Ji, C. (2019, 08). Empirical Self-similar Double-corner Frequency Spectrum as a Model for the Earthquake Source. Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9857
Ji, C., Archuleta, R. J., Tsuda, K., & Condon, S. J. (2019, 08). Preliminary seismological analyses of 2019 Mw 6.4 Searles Valley and Mw 7.1 Ridgecrest California earthquakes . Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9718
Crempien, J. G., & Archuleta, R. J. (2018, 08). Kinematic rupture simulations of earthquakes on multi-segment faults . Poster Presentation at 2018 SCEC Annual Meeting. SCEC Contribution 8655
Crempien, J. G., & Archuleta, R. J. (2017, 08). Seismic source and path parameters in Central California estimated with recorded ground motion. Poster Presentation at 2017 SCEC Annual Meeting. SCEC Contribution 7774
Crempien, J. G., & Archuleta, R. J. (2016, 08). Simulation of multi-segment kinematic rupture of the 1992 Landers earthquake and ground motion validation of ground motion. Poster Presentation at 2016 SCEC Annual Meeting. SCEC Contribution 6989
Crempien, J. G., & Archuleta, R. J. (2014). UCSB Method for Broadband Ground Motion for Kinematic Simulations of Earthquakes. Seismological Research Letters, (accepted). SCEC Contribution 1980
Ji, C., Archuleta, R. J., & Wang, Y. (2022). Variability of Spectral Estimates of Stress Drop Reconciled by Radiated Energy. Bulletin of the Seismological Society of America,. doi: 10.1785/0120210321. SCEC Contribution 11870
Ji, C., & Archuleta, R. J. (2022). A Source Physics Interpretation of Nonself-Similar Double-Corner-Frequency Source Spectral Model JA19_2S. Seismological Research Letters, 93(2A), 777-786. doi: 10.1785/0220210098. SCEC Contribution 11008
Ji, C., & Archuleta, R. J. (2020). Two empirical double-corner frequency source spectra and their physical implications. Bulletin of the Seismological Society of America, 111(2), 737-761. SCEC Contribution 10893
Silva, F., Maechling, P. J., Goulet, C. A., Jordan, T. H., Graves, R. W., Olsen, K. B., Archuleta, R. J., Atkinson, G. M., Pitarka, A., Anderson, J. G., & Song, S. (2018, 06). Using the SCEC Broadband Platform for Strong Ground Motion Simulation and Validation. Poster Presentation at 11th National Conference on Earthquake Engineering. SCEC Contribution 8994
Crempien, J. G., & Archuleta, R. J. (2017). Within-Event and Between-Events Ground Motion Variability from Earthquake Rupture Scenarios. Pure and Applied Geophysics, 174(9), 3451-3465. doi: 10.1007/s00024-017-1615-x. SCEC Contribution 8927
Archuleta, R. J., & Ji, C. (2016). Moment rate scaling for earthquakes 3.3≤M≤5.3 with implications for stress drop. Geophysical Research Letters, 43(23), 12,004-12,011. doi: 10.1002/2016GL071433. SCEC Contribution 7201
Archuleta, R. J., & Crempien, J. G. (2015). UCSB Method for Simulation of Broadband Ground Motion from Kinematic Earthquake Sources. Seismological Research Letters, 86(1), 61-67. doi: 10.1785/0220140103. SCEC Contribution 8928
Twardzik, C., Archuleta, R. J., & Ji, C. (2015). Rupture history of 2014 Mw 6.0 South Napa earthquake inferred from near-fault strong motion data and its impact to the practice of ground strong motion prediction . Geophysical Research Letters, 42(7), 2149-2156. doi: 10.1002/2015GL063335. SCEC Contribution 6108
Crempien, J. G., & Archuleta, R. J. (2015). UCSB Method for Simulation of Broadband Ground Motion from Kinematic Earthquake Sources. Seismological Research Letters, 86(1), 61-67. doi: 10.1785/0220140103. SCEC Contribution 2085
Yano, T. E., Shao, G., Liu, Q., Ji, C., & Archuleta, R. J. (2014). Coseismic and potential earlier afterslip distribution of the 2009 Mw 6.3 L’Aquila, Italy earthquake. Geophysical Journal International, 199, 23-40. doi: 10.1093/gji/ggu241. SCEC Contribution 1781
Cotton, F., Archuleta, R. J., & Causse, M. (2013). What is sigma of the stress drop?. Seismological Research Letters, 84(1), 42-48. doi: 10.1785/0220120087. SCEC Contribution 1683
Schmedes, J., Archuleta, R. J., & Lavallee, D. (2013). A kinematic rupture model generator incorporating spatial interdependency of earthquake source parameters. Geophysical Journal International, 192(3), 1116-1131. doi: 10.1093/gji/ggs021. SCEC Contribution 1681
Bouchon, M., Karabulut, H., Bouin, M., Schmittbuhl, J., Vallée, M., Archuleta, R. J., Das, S., Renard, F., & Marsan, D. (2010). Faulting characteristics of supershear earthquakes. Tectonophysics, 493(3-4), 244-253. doi: 10.1016/j.tecto.2010.06.011. SCEC Contribution 1682
Schmedes, J., Archuleta, R. J., & Lavallee, D. (2010). Dependency of Supershear Transition and Ground Motion on the Autocorrelation of Initial Stress. Tectonophysics, 493, 222-235. doi: 10.1016/j.tecto.2010.05.013. SCEC Contribution 1390
Schmedes, J., Archuleta, R. J., & Lavallee, D. (2010). Correlation of Earthquake Source Parameters Inferred from Dynamic Rupture Simulations. Journal of Geophysical Research: Solid Earth, 115, B03304. doi: 10.1029/2009JB006689. SCEC Contribution 1322
Hillers, G., Carlson, J. M., & Archuleta, R. J. (2009). Seismicity in a model governed by competing frictional weakening and healing mechanisms. Geophysical Journal International, 1363. doi: 10.1111/j.1365-246X.2009.04217.x. SCEC Contribution 1190
Harris, R. A., Barall, M., Archuleta, R. J., Dunham, E. M., Aagaard, B. T., Ampuero, J., Bhat, H. S., Cruz-Atienza, V. M., Dalguer, L. A., Dawson, P. B., Day, S. M., Duan, B., Ely, G. P., Kaneko, Y., Kase, Y., Lapusta, N., Liu, Y., Ma, S., Oglesby, D. D., Olsen, K. B., Pitarka, A., Song, S., & Templeton, E. L. (2009). The SCEC/USGS Dynamic Earthquake Rupture Code Verification Exercise. Seismological Research Letters, 80(January/February 2009), 119-126. doi: 10.1785/gssrl.80.1.119. SCEC Contribution 1184
Page, M. T., Custodio, S., Archuleta, R. J., & Carlson, J. M. (2009). Constraining Earthquake Source Inversions with GPS Data 1: Resolution Based Removal of Artifacts. Journal of Geophysical Research: Solid Earth, 114. doi: 10.1029/2007JB005449. SCEC Contribution 1127
Custodio, S., Page, M. T., & Archuleta, R. J. (2009). Constraining earthquake source inversions with GPS data 2: A two-step approach to combine seismic and geodetic datasets. Journal of Geophysical Research: Solid Earth,. doi: 10.1029/2008JB005746. SCEC Contribution 1125
Schmedes, J., Archuleta, R. J., & Lavallee, D. (2008). Near-Source Ground Motion Along Strike Slip Faults: Insights into Magnitude Saturation of PGV and PGA. Bulletin of the Seismological Society of America, 98(5), 2278-2290. doi: 10.1785/0120070209. SCEC Contribution 1202
Ma, S., Custodio, S., Archuleta, R. J., & Liu, P. (2008). Dynamic Modeling of the 2004 Mw 6.0 Parkfield, Califorina, Earthquake. Journal of Geophysical Research: Solid Earth, 113(B02301). doi: 10.1029/2007JB005216. SCEC Contribution 1088
O'Connell, R., Ma, S., & Archuleta, R. J. (2007). Influence of Dip and Velocity Heterogeneity on Reverse- and Normal-Faulting Rupture Dynamics and Near-Fault Ground Motions. Bulletin of the Seismological Society of America, 97(6), 1970-1989. doi: 10.1785/0120070042. SCEC Contribution 1100
Ma, S., Archuleta, R. J., & Page, M. T. (2007). Effects of Large-Scale Surface Topography on Ground Motions: As Demonstrated by a Study of the San Gabriel Mountains in Los Angeles, California. Bulletin of the Seismological Society of America, 97(6), 2066-2079. doi: 10.1785/0120070040. SCEC Contribution 1087
Custodio, S., & Archuleta, R. J. (2007). Parkfield Earthquakes: Characteristic or Complementary?. Journal of Geophysical Research, 112(B05310). doi: 10.1029/2006JB004617. SCEC Contribution 1008
Tsuda, K., Steidl, J. H., Archuleta, R. J., & Asimaki, D. (2006). Site-Response Estimation for the 2003 Miyagi-Oki Earthquake Sequence Considering Nonlinear Site Response. Bulletin of the Seismological Society of America, 96(4A), 1474-1482. doi: 10.1785/0120050160. SCEC Contribution 986
Liu, P., & Archuleta, R. J. (2006). Efficient Modeling of Q for 3D Numerical Simulation of Wave Propagation. Bulletin of the Seismological Society of America, 96(4A), 1352-1358. doi: 10.1785/0120050173. SCEC Contribution 957
Ma, S., & Archuleta, R. J. (2006). Radiated Seismic Energy Based on Dynamic Rupture Models of Faulting. Journal of Geophysical Research: Solid Earth, 111(B05315). doi: 10.1029/2005JB004055. SCEC Contribution 949
Tsuda, K., Archuleta, R. J., & Koketsu, K. (2006). Quantifying the Spatial Distribution of Site Response by Use of the Yokohama High-Density Strong-Motion Network. Bulletin of the Seismological Society of America, 96(3), 926-942. doi: 10.1785/0120040212. SCEC Contribution 938
Liu, P., Custodio, S., & Archuleta, R. J. (2006). Kinematic Inversion of the 2004 M 6.0 Parkfield Earthquake Including an Approximation to Site Effects. Bulletin of the Seismological Society of America, 96(4B), S143-S158. doi: 10.1785/20050826. SCEC Contribution 929
Lavallee, D., Liu, P., & Archuleta, R. J. (2006). Stochastic model of heterogeneity in earthquake slip spatial distributions. Geophysical Journal International, 165(2), 622-640. doi: 10.1111/j.1365-246X.2006.02943.x. SCEC Contribution 871
Tsuda, K., Archuleta, R. J., & Steidl, J. H. (2006). Confirmation of Nonlinear Site Response: Case Study from 2003 and 2005 Miyagi-Oki Earthquakes. Bulletin of the Earthquake Research Institute, 81(3/4), 303-307. SCEC Contribution 1107
Archuleta, R. J., Custodio, S., & Liu, P. (2006). Resolving the Source Parameters of the Parkfield Earthquake by Multiple Inversions of Di#erent Data Sets. Bulletin of the Earthquake Research Institute, 81(3/4), 247-251. SCEC Contribution 1105
Liu, P., Archuleta, R. J., & Hartzell, S. (2006). Prediction of Broadband Ground-Motion Time Histories: Hybrid Low/High- Frequency Method with Correlated Random Source Parameters. Bulletin of the Seismological Society of America, 96(6), 2118-2130. doi: 10.1785/0120060036. SCEC Contribution 1034
Archuleta, R. J., Steidl, J. H., & Squibb, M. B. (2006). The COSMOS Virtual Data Center: A Web Portal for Strong Motion Data Dissemination. Seismological Research Letters, 77(6), 651-658. doi: 10.1785/gssrl.77.6.651. SCEC Contribution 1014
Custodio, S., Liu, P., & Archuleta, R. J. (2005). The 2004 Mw6.0 Parkfield, California, Earthquake: Inversion of Near-Source Ground Motion Using Multiple Data Sets. Geophysical Research Letters, 32, L23312. doi: 10.1029/2005GL024417. SCEC Contribution 925
Dunham, E. M., & Archuleta, R. J. (2005). Near-Source Ground Motion from Steady State Dynamic Rupture Pulses. Geophysical Research Letters, 32(3), L03302. doi: 10.1029/2004GL021793. SCEC Contribution 808
Dunham, E. M., & Archuleta, R. J. (2004). Evidence for a Supershear Transient during the 2002 Denali Fault Earthquake. Bulletin of the Seismological Society of America, 94(6B), S256-S268. doi: 10.1785/0120040616. SCEC Contribution 864
Harris, R. A., & Archuleta, R. J. (2004). Seismology: Earthquake Rupture Dynamics: Comparing the Numerical Simulation Methods. Eos, Transactions, American Geophysical Union, 85(34), 321. SCEC Contribution 776
Liu, P., & Archuleta, R. J. (2004). A new nonlinear finite fault inversion with three-dimensional Green's functions: Application to the 1989 Loma Prieta, California, earthquake. Journal of Geophysical Research, 109(B02318). doi: 10.1029/2003JB002625. SCEC Contribution 755
Lavallee, D., & Archuleta, R. J. (2003). Stochastic modeling of slip spatial complexities for the 1979 Imperial Valley, California, earthquake. Geophysical Research Letters, 30(5), 1245. doi: 10.1029/2002GL015839. SCEC Contribution 722
Favreau, P., & Archuleta, R. J. (2003). Direct Seismic Energy Modeling and Application to the 1979 Imperial Valley Earthquake. Geophysical Research Letters, 30(5), 1198-1202. doi: 10.1029/2002GL015968. SCEC Contribution 692
Madariaga, R., Olsen, K. B., & Archuleta, R. J. (1998). Modeling Dynamic Rupture in a 3D Earthquake Fault Model. Bulletin of the Seismological Society of America, 88(5), 1182-1197. SCEC Contribution 384
Tumarkin, A. G., & Archuleta, R. J. (1997). Recent Advances in Prediction and Processing of Strong Ground Motions. Natural Hazards, 15(2-3), 199-215. doi: 10.1023/A:1007910605128. SCEC Contribution 395
Olsen, K. B., Madariaga, R., & Archuleta, R. J. (1997). Three-Dimensional Dynamic Simulation of the 1992 Landers Earthquake. Science, 278(5339), 834-838. doi: 10.1126/science.278.5339.834. SCEC Contribution 383
Steidl, J. H., Tumarkin, A. G., & Archuleta, R. J. (1996). What is a "Reference Site"?. Bulletin of the Seismological Society of America, 86(6), 1733-1748. SCEC Contribution 261
Olsen, K. B., & Archuleta, R. J. (1996). Three-Dimensional Simulation of Earthquakes on the Los Angeles Fault System. Bulletin of the Seismological Society of America, 86(3), 575-596. SCEC Contribution 220
Tumarkin, A. G., & Archuleta, R. J. (1995). Using Small Earthquakes to Estimate Large Ground Motions. Poster Presentation at Fifth International Conference on Seismic Zonation. SCEC Contribution 258
Olsen, K. B., Archuleta, R. J., & Matarese, J. (1995). Three-Dimensional Simulation of a Magnitude 7.75 Earthquake on the San Andreas Fault. Science, 270(5242), 1628-1632. doi: 10.1126/science.270.5242.1628. SCEC Contribution 229
Tumarkin, A. G., Archuleta, R. J., & Madariaga, R. (1994). Scaling Relations for Composite Earthquake Models. Bulletin of the Seismological Society of America, 84(4), 1279-1283. SCEC Contribution 40
Tumarkin, A., Archuleta, R. J., & Tumarkin, A. G. (1994). Southern California Earthquake Center Strong Motion Database SMDB. Oral Presentation at 89th Annual Meeting, Seismological Society of America. doi: 10.1785/gssrl.65-1-15. SCEC Contribution 191
Steidl, J. H., Martin, A., Tumarkin, A. G., Lindley, G. T., Nicholson, C., Archuleta, R. J., Vernon, F. L., Edelman, A., Tolstoy, M., Chin, J., Li, Y., Robertson Haver, M., Teng, T., Scott, J. B., Johnson, D., & Magistrale, H. (1994). SCEC Portable Deployment Following the 1994 Northridge Earthquake. Seismological Research Letters: Northridge Supplement, 65(3-4), 243. SCEC Contribution 159
Archuleta, R. J., & Tumarkin, A. G. (1994). Empirical Prediction of Site-Specific Ground Motion Spectra. Poster Presentation at International Workshop on Strong Motion Data. SCEC Contribution 134
Tumarkin, A. G., & Archuleta, R. J. (1994). Empirical Ground Motion Prediction. Annali di Geofisica: Proceedings of the Internationial School on Earthquake Source Mechanics, September 1-7, Erice, Sicily, XXXVII(6), 1691-1718. SCEC Contribution 116
Campillo, M., & Archuleta, R. J. (1993). A Rupture Model for the 28 June 1992 Landers, California, Earthquake. Geophysical Research Letters, 20(8), 647-650. SCEC Contribution 39
Last updated Sep 20, 2023.
