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!
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Joann M. Stock

Division of Geological and Planetary Sciences
California Institute of Technology
Professor of Geology & Geophysics

Expertise: Structural Geology & Tectonics; Marine Geophysics; Borehole geophysics; Plate Tectonics; Active source seismology; Remote sensing
 
 
About Me Publications
Hauksson, E., Jones, L. M., Stock, J. M., & Husker, A. L. (2023, 09). Seismotectonics of the 1857 Mw7.9 Fort Tejon Earthquake Rupture Zone Along the San Andreas Fault, Southern California. Poster Presentation at 2023 SCEC Annual Meeting. SCEC Contribution 13077
Ramírez-Ramos, E. E., Stock, J. M., Ross, Z. E., & Vidal-Villegas, A. (2022, 09). Machine-Learning catalog for the California-Baja California, Mexico, border region. Poster Presentation at 2022 SCEC Annual Meeting. SCEC Contribution 12045
Berne, A., & Stock, J. M. (2021, 08). INVESTIGATING THE STRUCTURE OF THE ‘SAND HILLS FAULT’ THROUGH DIFFUSE CO2 DEGASSING MEASUREMENTS. Poster Presentation at 2021 SCEC Annual Meeting. SCEC Contribution 11569
Ramírez-Ramos, E. E., Stock, J. M., Ross, Z. E., Vidal-Villegas, A., & Ramírez Hernández, J. (2021, 08). Seismotectonics of the California-Baja California region.. Poster Presentation at 2021 SCEC Annual Meeting. SCEC Contribution 11453
Hauksson, E., Stock, J. M., & Husker, A. L. (2021, 08). Brawley Seismic Zone, Dextral Transcurrent and Rift Tectonics Connecting the San Andreas and Imperial Faults Across the Salton Trough, Southern California, USA. Poster Presentation at 2021 SCEC Annual Meeting. SCEC Contribution 11207
Persaud, P., & Stock, J. M. (2021, 08). Borehole-Derived Stress Constraints for High-Risk Fault Systems in Southern California. Oral Presentation at 2021 SCEC Annual Meeting. SCEC Contribution 11157
Sahakian, V. J., Driscoll, N. W., Derosier, B., Oller, B., Klimasewski, A. R., & Stock, J. M. (2019, 08). Shallow Surface Deformation on the Southern Imperial Fault System from Marine Subsurface Imaging Data. Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9825
Kain, J. O., Persaud, P., & Stock, J. M. (2019, 08). Horizontal Principal Stress Orientations Near Long Beach, California from Borehole Breakouts. Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9465
Ajala, R., Persaud, P., Stock, J. M., Fuis, G. S., Hole, J. A., Goldman, M. R., & Scheirer, D. S. (2018, 08). 3-D upper crustal velocity structure of the Coachella Valley, Southern California: results from the salton seismic imaging project. Poster Presentation at 2018 SCEC Annual Meeting. SCEC Contribution 8575
Pritchard, E. H., Persaud, P., & Stock, J. M. (2018, 08). New Constraints on Stress Heterogeneity along High Risk Fault Systems in the Santa Barbara Channel, California from Borehole Breakouts. Poster Presentation at 2018 SCEC Annual Meeting. SCEC Contribution 8344
Pritchard, E. H., Persaud, P., & Stock, J. M. (2017, 08). Using Borehole Breakouts in Deviated Offshore Wells to Constrain Stress Regimes Beneath The Santa Barbara Channel, Offshore Southern California. Poster Presentation at 2017 SCEC Annual Meeting. SCEC Contribution 7752
Ajala, R., Persaud, P., Stock, J. M., Fuis, G. S., Hole, J. A., Goldman, M. R., & Scheirer, D. S. (2017, 08). 3-D Velocity Model of the Coachella Valley Determined Using P-Wave First Arrival Times from the Salton Seismic Imaging Project and Local Earthquakes. Poster Presentation at 2017 SCEC Annual Meeting. SCEC Contribution 7646
Witkosky, R. D., Adams, P. M., Buckland, K., Hudnut, K. W., Johnson, P. D., Lynch, D. K., Scharer, K. M., Stock, J. M., & Tratt, D. M. (2016, 09). Characterizing emissivity spectra from geomorphic surfaces along the southern San Andreas Fault. Poster Presentation at 2016 SCEC Annual Meeting. SCEC Contribution 6653
Witkosky, R., Adams, P. M., Akciz, S. O., Buckland, K., Harvey, J. C., Johnson, P. D., Lynch, D. K., Sousa, F. J., Stock, J. M., & Tratt, D. M. (2016, 03). Geologic Swath Map of the Lavic Lake Fault from Airborne Thermal Hyperspectral Imagery. Poster Presentation at 8th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS). SCEC Contribution 6185
Sousa, F. J., Stock, J. M., Scharer, K. M., Hudnut, K. W., Akciz, S. O., Witkosky, R. D., & Harvey, J. C. (2015). Re-evaluating offset measurements in the maximum slip zone of the 1999 Hector Mine Earthquake surface rupture. Bulletin of the Seismological Society of America, (under review). SCEC Contribution 6121
Witkosky, R. A., Stock, J. M., Tratt, D. M., Buckland, K. N., Adams, P. M., Johnson, P. D., Lynch, D. K., & Sousa, F. J. (2020). The Lavic Lake Fault: A Long-Term Cumulative Slip Analysis via Combined Field Work and Thermal Infrared Hyperspectral Airborne Remote Sensing. Remote Sensing, 12(21). doi: 10.3390/rs12213586. SCEC Contribution 8898
Persaud, P., Pritchard, E. H., & Stock, J. M. (2020). Scales of Stress Heterogeneity Near Active Faults in the Santa Barbara Channel, Southern California. Geochemistry, Geophysics, Geosystems, 21(1). doi: 10.1029/2019GC008744. SCEC Contribution 8267
Ajala, R., Persaud, P., Stock, J. M., Fuis, G. S., Hole, J. A., Goldman, M., & Scheirer, D. (2019). Three‐Dimensional Basin and Fault Structure From a Detailed Seismic Velocity Model of Coachella Valley, Southern California. Journal of Geophysical Research: Solid Earth,. doi: 10.1029/2018JB016260. SCEC Contribution 8269
Persaud, P., Ma, Y., Stock, J. M., Hole, J. A., Fuis, G. S., & Han, L. (2016). Fault zone characteristics and basin complexity in the southern Salton Trough, California. Geology, 44(9), 747-750. doi: 10.1130/G38033.1. SCEC Contribution 7092
Hernandez, A., Persaud, P., Bauer, K., Stock, J. M., Fuis, G. S., Hole, J. A., & Goldman, M. R. (2015, 09). Profile of Shallow Crustal Structure across the San Andreas Fault Zone, Coachella Valley based on Controlled-Source Data from the Salton Seismic Imaging Project (SSIP). Poster Presentation at SCEC Annual Meeting. SCEC Contribution 7636
Persaud, P., Stock, J. M., & Smith, D. E. (2015). Evidence of sub kilometer-scale variability in in-situ stress directions near active faults: an example from the Newport-Inglewood Fault, southern California, Abstract T23C-2972. Poster Presentation at American Geophysical Union Fall Meeting. SCEC Contribution 6218
Persaud, P., Stock, J. M., & Smith, D. E. (2015). Sub Kilometer-scale Variability in In-situ Stress Directions near the Newport-Inglewood Fault, Southern California. Poster Presentation at 2015 SCEC Annual Meeting. SCEC Contribution 6066
Chen, T., Akciz, S. O., Hudnut, K. W., Zhang, D., & Stock, J. M. (2015). Fault slip distribution of the 1999 Mw 7.1 Hector Mine Earthquake, California, estimated from post-earthquake airborne LiDAR data. Bulletin of the Seismological Society of America, 105(2a). doi: 10.1785/0120130108. SCEC Contribution 1973
Hauksson, E., Kanamori, H., Stock, J. M., Cormier, M., & Legg, M. R. (2014). Active Pacific North America plate boundary tectonics as evidenced by seismicity in the oceanic lithosphere offshore Baja California, Mexico. Geophysical Journal International, 196(3), 1619-1630. doi: 10.1093/gji/ggt467. SCEC Contribution 1745
Fletcher, J. M., Teran, O. J., Rockwell, T. K., Oskin, M. E., Hudnut, K. W., Mueller, K. J., Spelz, R. M., Akciz, S. O., Masana, E., Faneros, G., Stock, J. M., Elliott, A. J., Gold, P. O., Liu, J., Gonzalez-Ortega, A. A., & Lynch, D. K. (2014). Assembly of a large earthquake from a complex fault system: surface rupture kinematics of the April 4, 2010 El Mayor-Cucapah Mw7.2 earthquake . Geosphere, 10(4), 797-827. doi: 10.1130/GES00933.1 . SCEC Contribution 1697
Rose, E. J., Fuis, G. S., Stock, J. M., Hole, J. A., Kell-Hills, A. M., Kent, G. M., Driscoll, N. W., Crum, S., Goldman, M. R., Reusch, A. M., Han, L., Sickler, R. R., Catchings, R. D., Rymer, M. J., Criley, C. J., Scheirer, D. S., Skinner, S. M., Slayday-Criley, C. J., Murphy, J. M., Jensen, E. G., McClearn, R., Ferguson, A. J., Butcher, L. A., Gardner, M., Emmons, I., Loughran, C. L., Svitek, J. R., Bastien, P. C., Cotton, J. A., Croker, D. S., Harding, A. J., Babcock, J. M., Harder, S. H., & Rosa, C. M. (2013). Borehole- explosion and air-gun data acquired in the 2011 Salton Seismic Imaging Project (SSIP), southern California—Description of the Survey. Reston, VA., : U.S. Geological Survey. doi: 10.3133/ofr20131172. SCEC Contribution 1797
Hauksson, E., Stock, J. M., Bilham, R., Boese, M., Chen, X., Fielding, E. J., Galetzka, J. E., Hudnut, K. W., Hutton, K., Jones, L. M., Kanamori, H., Shearer, P. M., Steidl, J. H., Treiman, J. A., Wei, S., & Yang, W. (2013). Report on the August 2012 Brawley Earthquake Swarm in Imperial Valley, Southern California. Seismological Research Letters, 84(2), 177-189. doi: 10.1785/0220120169. SCEC Contribution 1678
Meng, L., Ampuero, J., Stock, J. M., Duputel, Z., Luo, Y., & Tsai, V. C. (2012). Earthquake in a Maze: Compressional Rupture Branching During the 2012 Mw 8.6 Sumatra Earthquake. Science, 337(6095), 724-726. doi: 10.1126/science.1224030. SCEC Contribution 1881
Duputel, Z., Kanamori, H., Tsai, V. C., Rivera, L., Meng, L., Ampuero, J., & Stock, J. M. (2012). The 2012 Sumatra great earthquake sequence. Earth and Planetary Science Letters, 351-352, 247-257. doi: 10.1016/j.epsl.2012.07.017. SCEC Contribution 1875
Duputel, Z., Kanamori, H., Tsai, V. C., Rivera, L., Meng, L., Ampuero, J., & Stock, J. M. (2012, 12). The Sumatra great earthquake sequence of 11 April 2012: Evidence of rupture onto multiple subfaults. Oral Presentation at AGU Fall Meeting 2012. SCEC Contribution 1788
Meng, L., Ampuero, J., Stock, J. M., Duputel, Z., Luo, Y., & Tsai, V. C. (2012). Earthquake in a maze: compressional rupture branching during the 2012 Mw 8.6 Sumatra earthquake. Science,. doi: 10.1126/science.1224030. SCEC Contribution 1656
Hauksson, E., Stock, J. M., Hutton, K., Yang, W., Vidal-Villegas, A., & Kanamori, H. (2010). The 2010 Mw7.2 El Mayor-Cucapah Earthquake Sequence, Baja California, Mexico and Southernmost California, USA: Active Seismotectonics Along the Mexican Pacific Margin. Pure and Applied Geophysics: Geodynamics of the Mexican Pacific Margin,. doi: 10.1007/s00024-010-0209-7. SCEC Contribution 1439
Wilde, M., & Stock, J. M. (1997). Compression Directions in Southern California (from Santa Barbara to Los Angeles Basin) Obtained From Borehole Breakouts. Journal of Geophysical Research, 102(B3), 4969-4983. doi: 10.1029/96JB03734. SCEC Contribution 320
Kerkela, S., & Stock, J. M. (1996). Compression Directions North of the San Fernando Valley Determined from Borehole Breakouts. Geophysical Research Letters, 23(23), 3365-3368. doi: 10.1029/96GL03054. SCEC Contribution 342
Sieh, K., Jones, L. M., Hauksson, E., Hudnut, K. W., Eberhart-Phillips, D., Heaton, T. H., Hough, S. E., Hutton, K., Kanamori, H., Lilje, A., Lindvall, S. C., McGill, S. F., Mori, J., Rubin, C. M., Spotila, J., Stock, J. M., Thio, H., Treiman, J. A., Wernicke, B. P., & Zachariasen, J. (1993). Near Field Investigations of the Landers Earthquake Sequence, April-July, 1992. Science, 260(5105), 171-176. doi: 10.1126/science.260.5105.171. SCEC Contribution 25

Last updated Sep 20, 2023.