I am a Research Geophysicist in the Earthquake Science Center where I have served as the Task Leader for GPS data collection and analysis and as the Project Chief for Crustal Deformation. Currently I serve as the Geodesy topical coordinator for the Earthquake Hazards Program. I study deformation using a variety of geodetic data (measurements of the displacement of the Earth’s surface). This research concerns the spatio-temporal patterns of strain accumulation and release on faults and how such processes modulate the earthquake cycle. One area of interest is the use of geodetic data to infer the spatial distribution of interseismic and coseismic fault slip and the insight this provides into earthquake recurrence. Another area of focus is the detection and kinematic modeling of transient deformation using frequent geodetic measurements and techniques such as Kalman filtering. This work is geared toward an improved understanding of the stressing history on a fault, the conditions under which stable slip occurs, and the relation between transient slip, seismicity, and earthquake-induced stress changes. I am also involved in developing ways to use real-time GPS data for improved earthquake early warning and situational awareness following major earthquakes.
A.B. (1996) Dartmouth College (Earth Sciences)
M.S. (2000) Stanford University (Geophysics)
Ph.D. (2003) Stanford University (Geophysics)
2003 – 2005 Mendenhall Postdoctoral Fellow, USGS Western Region Earthquake Hazards Team, Menlo Park, CA
2005 – 2011 Research Geophysicist, Leader: GPS Crustal Strain Task, USGS Earthquake Science Center, Menlo Park, CA
2011 – 2014 Research Geophysicist, Project Chief: Crustal Deformation, USGS Earthquake Science Center , Menlo Park, CA
2014 - present Research Geophysicist, Earthquake Hazards Program Geodesy Coordinator, USGS Earthquake Science Center , Menlo Park, CA
Brooks, B. A., S. E. Minson, C. L. Glennie, J. R. Murray, K. Hudnut, T. L. Ericksen, V. Langenheim, D. Lockner, T. Dawson, A. Lutz, D. Schwartz, J. Lienkaemper, D. Zaccone, Harvesting the shallow slip history of the South Napa earthquake from laser scans of vine rows, in review.
Floyd, M. A., R. J. Walters, J. R. Elliott, G. J. Funning, J. L. Svarc, J. R. Murray, A. J. Hooper, Y. Larsen, P. Marinkovic, R. Bürgmann, I. A. Johanson, and T. J. Wright, Spatial variations in fault friction controlled by lithology, in review.
Murray, J. R., 2015, GPS: Applications in fault-related deformation monitoring. In Meyers, Robert (Ed.) Encyclopedia of Complexity and Systems Science, Springer New York, in press.
Lozos, J. C., R. A. Harris, J. R. Murray, and J. J. Lienkaemper 2015, Dynamic rupture models of earthquakes on the Bartlett Springs Fault, Northern California, Geophys. Res. Lett., 42, 4343–4349, doi:10.1002/2015GL063802.
Minson, S. E., B. A. Brooks, C. L. Glennie, J. R. Murray, J. O. Langbein, S. E. Owen, T. H. Heaton, R. A. Iannucci, D. L. Hauser, Crowdsourced earthquake early warning. Sci. Adv. 1, e1500036 (2015).
Barnhart,W.D., J. R. Murray, S-H Yun, J. L. Svarc, S. V. Samsonov, E. J. Fielding, B. A. Brooks, P. Milillo, 2015, Geodetic constraints on the August 2014 South Napa, CA earthquake, Seismol. Res. Lett., 86(2A), 335-343, doi:10.1785/0220140210.
Brocher, T.M., A. S. Baltay, J. L. Hardebeck, F. F. Pollitz, J. R. Murray, A. L. Llenos, D. P. Schwartz, J. L. Blair, D. J. Ponti, J. J. Lienkaemper, V. E. Langenheim, T. E. Dawson, K. W. Hudnut, D. R. Shelly, D. Dreger, J. Boatwright, B. T. Aagaard, D. J. Wald, R. M. Allen, W. D. Barnhart, K. L. Knudsen, B. A. Brooks, and K. M. Scharer, 2015, The M6.0 24 August 2014 South Napa Earthquake, Seism. Res. Lett., 86(2A), 309-326, doi: 10.1785/0220150004.
Murray, J. R., S. E. Minson, and J. Svarc, 2014, Slip rates and spatially variable creep on faults of the northern San Andreas system inferred through Bayesian inversion of Global Positioning System data, J. Geophys. Res., in press, doi: 10.1002/2014JB010966
Minson, S. E., J. R. Murray, J. O. Langbein, and J. S. Gomberg 2014, Real-time inversions for finite fault slip models and rupture geometry based on high-rate GPS data, J. Geophys. Res. Solid Earth, 119, 3201–3231, doi:10.1002/2013JB010622.
Murray, J., R. Lohman, and D. Sandwell, 2013, Combining GPS and remotely-sensed data to characterize time-varying crustal motion, Eos Trans. AGU, v. 94, p. 309, doi: 10.1002/2013EO350006.
Battaglia, M., Cervelli, P. F., and Murray, J. R., 2013, Modeling crustal deformation near active faults and volcanic centers—A catalog of deformation models: U.S. Geological Survey Techniques and Methods, book 13, chap. B1, 96 p., http://pubs.usgs.gov/tm/13/b1.
Lohman, R. B. and J. R. Murray 2013, The SCEC geodetic transient detection validation exercise: Seismol. Res. Lett., v. 84(3), p. 419-425, doi: 10.1785/0220130041. IP-044356.
Battaglia, M., P. F. Cervelli, and J. R. Murray 2013, dMODELS: A MATLAB software package for modeling crustal deformation near active faults and volcanic centers: J. Volcanol. Geoth. Res., v. 254, p. 1-4, doi:j.jvolgeores.2012.12.018.
Hammond, W. C., G. Blewitt, C. Kreemer, J. R. Murray-Moraleda, J. Svarc, 2011, Global Positioning System constraints on crustal deformation before and during the 21 February 2008 Wells, Nevada M 6.0 earthquake, in dePolo, C. M. and D. D. LaPoint, eds., The 21 February 2008 Mw 6.0 Wells, Nevada earthquake; a compendium of earthquake-related investigations prepared by the University of Nevada, Reno, Special Publication, Nevada Bureau of Mines and Geology, p. 181 – 196.
Bennington, N., C. Thurber, K. L. Feigl, and J. Murray-Moraleda, 2011, Aftershock Distribution as a Constraint on the Geodetic Model of Coseismic Slip for the 2004 Parkfield Earthquake, PAGEOPH, 168, doi: 10.1007/s00024-010-0214-x, 1553-1565.
Murray-Moraleda, J. and R. Lohman, 2010, Workshop Targets Development of Geodetic Transient Detection Methods, Eos, 91, p 58.
Murray-Moraleda, J. and R. Simpson, 2009, Geodetically inferred coseismic and postseismic slip due to the 31 October 2007 M 5.4 Alum Rock earthquake, Bull. Seismo. Soc. Am., 99, doi: 10.1785/0120090017.
Murray-Moraleda, J., 2009, GPS: Applications in crustal deformation monitoring. In Meyers, Robert (Ed.) Encyclopedia of Complexity and Systems Science, Vol 4, pp 4249-4283 Springer New York.
Murray-Moraleda, J. R., 2008, Predicted surface displacements for scenario earthquakes in the San Francisco Bay Region: U.S. Geological Survey Open-File Report 2008-1375, 39 p. and data package [http://pubs.usgs.gov/of/2008/1375/].
Pollitz, F., P. McCrory, J. Svarc, and J. Murray, 2008, Dislocation models of interseismic deformation in the western United States, J. Geophys. Res., 113, doi:10.1029/2007JB005174.
R. W. Simpson, M. Barall, J. Langbein, J. Murray, and M. J. Rymer, 2006, San Andreas fault geometry in the Parkfield, California region, Bull. Seis. Soc. Am., 96, doi: 10.1785/0120050824, S28-S37.
Murray, J. and J. Langbein, 2006, Slip on the San Andreas fault at Parkfield, California over two earthquake cycles and the implications for seismic hazard, Bull. Seis. Soc. Am., 96, doi: 10.1785/0120050820, S283-S303.
Langbein, J., J. Murray, and H. A. Snyder, 2006, Coseismic and initial postseismic deformation from the 2004 Parkfield, California earthquake, observed by Global Positioning System, Electronic distance meter, creepmeters, and borehole strainmeters, Bull. Seis. Soc. Am., 96, doi: 10.1785/0120050823, S304-S320.
Bakun, W. H., B. Aagaard, B. Dost, W. L. Ellsworth, J. L. Hardebeck, R. A. Harris, C. Ji, M. J. S. Johnston, J. Langbein, J. J. Lienkaemper, A. J. Michael, J. Murray, R. M. Nadeau, P. A. Reasenberg, M. S. Reichle, E. A. Roeloffs, A. Shakal, R. W. Simpson, and F. Waldhauser, 2005, Implications for prediction and hazard assessment from the 2004 Parkfield earthquake, Nature, 437, doi:10.1038/nature04067.
Murray, J. and P. Segall, 2005, Spatiotemporal evolution of a transient slip event on the San Andreas fault near Parkfield, California, J. Geophys. Res., 110, B09407, doi:10.1029/2005JB003651.
Langbein, J., R. Borcherdt, D. Dreger, J. Fletcher, J. L. Hardebeck, M. Hellweg, C. Ji, M. Johnston, J. Murray, R. Nadeau, M. J. Rymer, and J. A. Treiman, 2005, Preliminary report on the 28 September 2004, M6.0 Parkfield, California, earthquake, Seism. Res. Lett., 76, 1-17.
Battaglia M., P. Segall, J. Murray, P. Cervelli and J. Langbein, 2003, The mechanics of unrest at Long Valley caldera, California. 1. Modeling the geometry of the source using GPS, leveling and 2-color EDM data, J. Volcanol. Geotherm. Res., 127, 195-217.
Murray, J., 2003, Spatial and temporal slip-rate variations on the San Andreas fault inferred from geodetic data and the implications for strain accumulation: Ph.D. dissertation, Stanford University, 193 pp.
Murray, J. and P. Segall, 2002, Testing time-predictable earthquake recurrence by direct measure of strain accumulation and release, Nature, 419, 287-291.
Murray, J., P. Segall, P. Cervelli, W. Prescott, and J. Svarc, 2001, Inversion of GPS data for spatially variable slip-rate on the San Andreas Fault near Parkfield, CA, Geophys. Res. Lett., 28, 359-362.
Murray, J., P. Segall, P. Cervelli, W. Prescott, and J. Svarc, 2000, Inversion of geodetic data for spatially variable slip-rate on the San Andreas Fault near Parkfield, CA, in Proceedings of the 3rd Conference on Tectonic Problems of the San Andreas Fault System, G. Bokelmann and R. Kovach, eds., Stanford University Publications, vol. XXI, p. 179-192.
Murray, J. and N. Oreskes, 1997, Uses and limitations of cathodoluminescence in the study of apatite paragenesis, Economic Geology, 92, 368-376.