Joan Gomberg Research Geophysicist, US Geological Survey Office :  US Geological Survey, University of Washington, Dept. of Earth & Space Sciences, Box 351310, Seattle, WA 98195 Phone :  206-616-5581 Cell :  206-941-7498 Fax : 206-553-8350 email :  gomberg@usgs.gov

Research Interests Earthquake hazard assessment, earthquake interactions, wave propagation, source scaling. Related links USGS Pacific Northwest Website Pacific Northwest Seismic Network 2008 Aseismic Slip, Nonvolcanic Tremor, & Earthquakes Workshop 2008 National Earthquake Conference Education Massachusetts Institute of Technology        Geophysics             B.Sc., 1979 University of California, San Diego               Geophysics             Ph.D., 1986 Positions Held Post-doc, University of California, San Diego                                   1986-87 Post-doc, University of Nevada, Reno                                             1987-88 Visiting Scholar, Inst, Geol. & Nuclear Sci., New Zealand                 Winter, 2002 Visiting Scholar, Ist. Naz. di Geofisica e Vulc., Italy                         Spring, 2002 Research Geophysicist, US Geological Survey, Golden, CO             1988-1994 Research Geophysicist, US Geological Survey, Memphis,TN            1994-2006 Adjunct Assoc. Prof., Univ. of Memphis,, Memphis,TN                     1994-2006 Research Geophysicist, U.S. Geological Survey, Seattle, WA           2006-present Affiliate Assoc. Prof., Univ. of Washington, Seattle, WA                   2006-present Recent/Current Research NonVolcanic Tremor, Aseismic Slip, and Earthquakes Observational study of dynamically triggered tremor and earthquakes in Cascadia, most recently in the region of Vancouver Island, British Columbia.  With Ken Creager,Honn Kao, Garry Rogers, Justin Rubinstein, John Vidale. Observational study of dynamically triggered tremor in California. With Paul Bodin, Ken Creager,Zhigang Peng, Justin Rubinstein, John Vidale Search for tremor associated with aseismic slip events in California.  With Roland Burgmann, Elizabeth Cochran, Justin Rubinstein, John Vidale Earthquake Triggering Probability and Ground-motion Scaling. With Karen Felzer. Dynamic NonLinearity and Earthquake Triggering Laboratory acoustic loading experiments. With Matt Knuth, Paul Johnson, Chris Marone, Heather Savage Modeling constrained by in situ and laboratory data. With Xiaoping Jia, Paul Johnson Pacific Northwest ShakeMap Development Testing of extrapolation of NGA attenuation relations to PNW motions Comparison of PNW ground motions and intensities Working group coordination for ShakeMap PNW validation and enhancement.  With Paul Bodin, Renate Hartog, Steve Malone, Tom Pratt, Bill Steele, David Wald, Craig Weaver, John Vidale and partners Ivan Wong, Doug Bausch Development of 'SeisSim' Numerical Earthquake Simulator. With Sandy Steacy, John McClosky Mount Rainier Characterization of 2006 M4.5 Cowlitz Chimneys earthquake sequence. With Renate Hartog, Karen Meagher, Seth Moran Dynamic triggering observations.  With Renate Hartog, John Vidale, Maise In Situ Non-linear Ground Motion Measurement using NEES Vibrator Trucks. With Paul Bodin, Xiaoping Jia, Farn-Yu Meng, Paul Johnson, Zack Lawrence, Fred Pearce Editorial Service 2002 – present: Assoc. Editor - Journal of Geophysical Research. 2004-2005: Co-Editor – Journal of Geophysical Research Special Vol., “Stress Transfer, Earthquake Triggering, and Time-dependent Seismic Hazard” 2008:Co-Editor – Journal of Geophysical Research Special Vol., “Aseismic Slip, Non-volcanic Tremor, and Earthquakes”   Professional Organization Activities American Geophysical Union Member            1979 - present Seismological Society of America     Member                                             1986 – present SSA/IRIS Distinguished Lecturer Selection Standing Comm. Member     2004 – present Board of Directors Member                 2003 – 2006 Vice President                                   2004 – 2006 Board of Dir. Nominating Comm.Chair  2006 Assoc. of Women in Geoscience  Member     1987 - 2005 IRIS PASSCAL Standing Comm. Member      2001 – 2004 Council of Natl. Seismic Sys. Board Member  1997 – 2001 Cascadia Regional Earthquake Working Group 2006 - present CPARM                                                        2006 - present   Panel & Workshop Activities USGS Performance Panels 2005 – Central Region Geologic Hazards Team 2006 – Panel Chair, Central Region Geologic Hazards Team 2007 – Earthquake Hazards Team 2008 – Panel Chair, Earthquake Hazards Team Scientific Workshops (Invited Participant) April, 2002 – Inst. of Geol. and Nuclear Sci. "Microzoning" - Ground-classing Wkshp, Lower Hutt, New Zealand. October, 2002 – IRIS AllComm Wkshp, College Park, Maryland. January, 2006 – Fourth Internatl. Wkshp on Statistical Seismol., Inst. of Statistical Math. of Japan, Zushi, Japan March, 2007 – S. Calif. Earthquake Ctr. Working Group on Calif. Earthquake Probabilities Wkshp, Lake Arrowhead, California Review Panels  January, 2004 – National Res. Council Comm. meeting to evaluate the economic benefits of improved seismic monitoring, St. Louis, MO. February, 2005 – USGS Mendenhall Postdoctoral Fellowship Program, Reston, Virginia July, 2006 – USGS NEHRP Ext. Grants Program, CEUS Panel Leader, San Antonio, Texas July, 2006 – USGS NEHRP External Grants Program, Pacific Northwest Panel Member, San Antonio, Texas Conference, Workshop Planning 2007-2008 – April 2008 National Earthquake Conference Planning & Steering Committee Member 2007-2008 - Feb. 2008 USGS/Earthscope/GSC/UNAVCO Workshop on Aseismic Slip, NonVolcanic Tremor and Earthquakes Planning Committe Chair USGS Awards 1991 Branch of Geologic Risk Assess. Best Pub. Award 1993  Gilbert Fellowship ("Dynamic Strains and Earthquake Triggering") 1997 “On the Spot” award for organizing workshop on "U.S. seismic networks and the national seismic system" 1998  “Star” award for leadership in responding to the M4.9, southern Alabama earthquake. 1999  “Star” award for liaison activities with the Mid-America Earthquake Center. 2000 “Star” award for leadership in the Central and Eastern U.S. Hazards program 2001 “Star” award for leadership in the Central and Eastern U.S. Hazards program 2003 Central Region Geologic Hazards Team Senior Scientist in Residence Award 2004 “Star” award for leadership in the Central and Eastern U.S. Hazards program         “Star” award for service to the Earthquake Hazards Program         Venture Capital Fund Award,  “A Multi-facility Approach to Solving Problems in Earthquake Hazards”         Venture Capital Fund Award,  “A GIS Based Decision Support System for Earthquake Risk Mitigation” 2007 USGS  “Star” award for leadership in activities related to episodic tremor and slip. Presentations Washington Emergency Management Assoc., Aug. 2007, "Natural Hazards - Change We Can Take to the Bank" USGS Menlo Park Weekly Seminar, March 2007, "The Pacific Northwest - An Earth Scientist's Candy Shop" SCEC WGCEP Workshop, March 2007,  "Overview of Evidence for Dynamic Triggering" Partners in Emergency Preparedness Conference, Feb. 2007, "Earthquake Hazard Mitigation & Response & the Science They’re Built On" Publications In Press or Preparation Gomberg, J. and K. Felzer, Earthquake triggering and the scaling of ground motions, Journal of Geophysical Research, 42 p., in revision. Hartog, R., J. Gomberg, S. Moran, A. Wright, K. Meagher, The October 8, 2006 M4.5 Cowlitz Chimney earthquake in Mount Rainier National Park, Seismological Research Letters,in press. Johnson, P., X. Jia, and J. Gomberg, The role of nonlinear dynamics in dynamic earthquake triggering, Journal of Geophysical Research, 47 p., in revision. Lawrence, Z., P. Bodin,C.A. Langston, F. Pearce, J. Gomberg, P.A. Johnson, F.Y. Menq, T. Brackman, 2007, Induced Dynamic Nonlinear Ground Response at Garner Valley, California: Bulletin of the Seismological Society of America, in press. Pearce, F., Bodin, P., P. Johnson, J. Gomberg, Z. Lawrence,, X. Jia, and F-Y. Meng, Simulating earthquake response: Induced nonlinear, nonequilibrium dynamics at the Earth’s surface: Journal of Geophysical Research, 20 p., in prep. 2008 Gomberg, J., J.L. Rubinstein, Z. Peng, K.C. Creager, J.E. Vidale, and P. Bodin, 2008, Widespread Triggering of Non-volcanic Tremor in California, Gomberg, J., J.L. Rubinstein, Z. Peng, K.C. Creager, J.E. Vidale, and P. Bodin, 2008, Widespread Triggering of Non-volcanic Tremor in California, Science, v. 319, p. 173. Download Johnson, P.A., Savage, H., Knuth, M., Gomberg, J. and Marone, C., 2008. Effects of acoustic waves on stick–slip in granular media and implications for earthquakes, v. 451|3 January 2008| doi:10.1038/nature06440 , p. 57-60. Download 2007 Rubinstein, J., J. Vidale, J. Gomberg, P. Bodin, K. Creager, and S. Malone, 2007, Non-volcanic tremor driven by large transient shear stresses: Nature, v. 448, p. 579-582, doi:10.1038/nature06017. Download 2006 Cramer, C., J.S. Gomberg, E.S. Schweig, B.A. Waldron, and K. Tucker, 2006, First USGS urban hazard maps predict the effects of soils: Seism. Res. Letts., v. 77, p. 23-29. Gomberg, J.. L. Wald,  R. Dart, E.S. Schweig, 2006, Urban Seismic Hazard Mapping for Memphis, Shelby County, Tennessee: USGS Fact Sheet 05-3142, 4 p. 2005 Bodin, P., C. Langston, G. Patterson, C. Powell, M. Withers, and J. Gomberg, 2005, Earthscope science for Mid-America, EOS Transactions of the American Geophysical Union, v. 86,  p 68-69. Gomberg, J., M.E. Bardinelli, , M. Cocco, P. Reasenberg, 2005, Time-dependent earthquake probabilities: Journal of Geophysical Research, 110, B05S04, doi:10.1029/2004JB003405. Gomberg, J. and P. Johnson, 2005, Dynamic Triggering of Earthquakes, v. 437, p. 830, doi:10.1038/nature04167, Nature. Download Gomberg, J., P. Reasenberg, M. Cocco, M.E. Bardinelli,  2005,  A frictional population model of seismicity rate change: Journal of Geophysical Research, 110, B05S03, doi:10.1029/2004JB003404. Steacy, S., J. Gomberg, M. Cocco, 2005, Introduction to special section: Stress transfer, earthquake triggering, and time-dependent seismic hazard, Journal of Geophysical Research, 110, B05S01, doi:10.1029/2005JB003692. Download 2004 Cramer, C. H., J. S. Gomberg, E. S. Schweig, B. A. Waldron, and K. Tucker, 2004, The Memphis, Shelby County, Tennessee, Seismic Hazard Maps: USGS Open-File Report 04-1294, 40 p. Gomberg, J.,  P. Bodin, K. Larson,  H. Dragert 2004, The fundamental process of earthquake nucleation by transient deformations revealed by the M7.9 Denali, Alaska earthquake, Nature, 427, 621-624. Gomberg, J., and the Participants in the IRIS/NEES/USGS Workshop and Garner Valley Experiment, 2004, Multifacility, Multidisciplinary Earthquake Science and Engineering, EOS Transactions of the American Geophysical Union, v. 85, p 404. Petersen, M.D., B.K.  Rastogi, E.S. Schweig, S.C. Harmsen, J.S. Gomberg, 2004, Sensitivity analysis of seismic hazard for the northwestern portion of the state of Gujarat, India, Tectonophysics, v. 390, p. 105-115. 2003 Bodin, P., Schweig, E., Pavlis, G. and Gomberg, J., 2003, A Rapid Array Mobilization Procedure (RAMP) Agreement for the Central United States, US Geological Survey Open File Report 03-015, 23 p.. Gomberg, J., P. Bodin, and P. Reasenberg, 2003, Observing Earthquakes Triggered in the Near Field by Dynamic Deformations: Bulletin of the Seismological Society of America, v. 93, p. 118-138. Gomberg, J., B. Waldron, E. Schweig, H. Hwang, A. Webbers, R. VanArsdale, K. Tucker, R. Williams, R. Street, P. Mayne, W. Stephenson, J. Odum, C. Cramer, R. Updike, S. Hutson, M. Bradley, 2003, Lithology and Shear-wave Velocity in Memphis, Tennessee, 2003, Bulletin of the Seismological Society of America, v. 93, p. 986-998. Larson, K., P. Bodin, and J. Gomberg, 2003, Using 1 Hz GPS Data to Measure Permanent and Seismic Deformations Caused by the Denali Fault Earthquake, Science, v. 300,  p. 1421-1424. Michael, A.J., N. Field, A. Frankel, J. Gomberg, and K. Shedlock, 2003, Chapts. 4 & 5, Time-Independent Hazard and Time-Dependent Hazard, in Earthquake Science and Seismic Risk Reduction, eds. F. Mulargia and R. Geller, NATO Advanced Research Workshop Publ. Series, p. 251-364. Pratt,T., M. Holmes, E. Schweig, J. Gomberg, H. Cowan, 2003, Shallow faulting in Limón Bay, Republic of Panama: Implications for seismic hazard analyses and recent tectonics: Tectonics, v. 368, p. 211-2287. Schweig E., Gomberg J., Petersen M., Ellis M., Bodin P., Mayrose L, and Rastogi B. K., 2003, The M 7.6 Bhuj earthquake: Global lessons for earthquake hazard in intra-plate regions: Journal of the Geological Society of India, v. 61, p. 277-282. 2002 Gomberg, J. and Schweig, E., 2002, “East meets Midwest: An earthquake in India helps hazard assessment in the Central United States”, USGS Fact Sheet 007-02, 4 p.. Gomberg, J. and Schweig, E., 2002, “Earthquake Hazard in the Heart of the Homeland”, USGS Fact Sheet 131-02, 4 p., http://pubs.usgs.gov/fs/2006/3125/. Kilb, D., Gomberg, J. & Bodin, P., 2002,  Aftershock triggering by complete Coulomb stresses: Journal of Geophysical Research, v. 107, 10.1029/2001JB000202. 2001 Cramer, C. and Gomberg, J., 2001, Updated New Madrid analysis better defines the uncertainty in seismic hazard maps: EOS Transactions of the American Geophysical Union, v. 82, p. 102-106. Ellis, M., Gomberg, J. and Schweig, E., 2001, Indian earthquake may serve as analog for New Madrid earthquakes: EOS Transactions of the American Geophysical Union, v. 82, p. 345-350. Gomberg, J., 2001, The failure of earthquake failure models: Journal of Geophysical Research, v. 106, p. 16253-16264. Gomberg, J., Reasenberg, P., Bodin, P. and Harris, R. 2001, Earthquake triggering by transient seismic waves following the Landers and Hector Mine, California earthquakes: Nature, v. 411, p. 462-466. Gomberg, J., and Schweig, E., 2001, Earthquake hazard in the Appalachian region, in Adams. D. B., Burke, K., Hemingway, B., Keay, J., and Yurewicz, compilers, U.S. Geological Survey Appalachian region integrated science workshop proceedings, Gatlinburg, Tennessee, October 22-26, 2001: U.S. Geological Survey Open-File Report 01-406, p. 141-143. Schweig E., Gomberg J., Bodin P., Patterson G., and Davis, S., 2001, The internet: shaking up scientific communications: Nature, 412, http://www.nature.com/nature/webmatters/equake/. Schweig, E. S., Gomberg, J.S., and VanArsdale, R.B., 2001, Introduction to special issue titled earthquake hazard evaluation in the Central United States: Engineering Geology, v. 62, p. 1-5. 2000 Gomberg, J., Beeler, N.M., and Blanpied, M.L., 2000, On rate-and-state and Coulomb failure models: Journal of Geophysical Research, v. 105, p. 7857-7872. Gomberg, J., Pavlis, G. and Bodin, P., 2000, The strain in the array is mainly in the plane (waves): Bulletin of the Seismological Society of America, v. 89, p. 1428-1438. Kilb, D., Gomberg, J. & Bodin, P., 2000, Triggering of earthquake aftershocks by dynamic stresses: Nature, v. 408, p. 570-574. Participants* in the 2000 New Madrid Source Workshop, 2000, Reassessing New Madrid, EOS, Am. Geophys. Union Trans., v. 81, p. 397-403. 1999 Schweig, E., Gomberg, J. and Tuttle, M., 1999, Comment: Caution urged in revising earthquake hazard estimates in New Madrid seismic zone, EOS, Transactions, Amer. Geophys. Union, v. 80, p. 197. Gomberg, J. and Wolf, L., 1999, A possible cause for an improbable earthquake: The 1997, Mw4.9 southern Alabama earthquake and hydrocarbon recovery: Geology, v. 27, p. 367. Kilb, D. and Gomberg, J., 1999, The initial subevent of the 1994, Northridge, California earthquake: Do small and large earthquakes initiate similarly?, Seismology,v. 3, p. 409-420. 1998 Gomberg, J., Beeler, N.M., and Blanpied, M.L., 1998, Earthquake triggering by static and dynamic deformations: Journal of Geophysical Research, v. 103, p. 24411-24426. 1997 Bodin, P., Gomberg, J., Singh, S.K., and Santoyo, M., 1997, Dynamic deformations of shallow sediments in the Valley of Mexico, Part I:  Three dimensional strains and rotations recorded on a seismic array: Bulletin of the Seismological Society of America,  v. 87, p. 528-539. Gomberg, J., 1997, Dynamic and permanent deformations, and the M6.7, Northridge, California earthquake: Soil Dynamics and Earthquake Engineering,  v. 16, p. 471-494. Gomberg, J., Blanpied, M.L., and Beeler, N.M., 1997, Transient triggering of near and distant earthquakes: Bulletin of the Seismological Society of America, v. 87, p. 294-309. Kilb, D., Ellis, M., and Gomberg, J., 1997, On the origin of diverse aftershock mechanisms following the 1989 Loma Prieta earthquake: Geophysical Journal International, v. 128, p. 557-570. Singh, S.K., Santoyo, M., Bodin, P., and Gomberg, J., 1997, Dynamic deformations of shallow sediments in the Valley of Mexico, Part II:  Single station estimates: Bulletin of the Seismological Society of America, v. 87, p. 540-550. 1996 Gomberg, J., 1996, Stress/strain changes and triggered seismicity following the Ms7.4 Landers, California earthquake: Journal of Geophysical Research,  v. 101,  p. 751-764. Gomberg, J. and Agnew, D.C., 1996, The accuracy of seismic estimates of dynamic strains from Pinyon Flat Observatory, California, strainmeter  and seismograph data: Bulletin of the Seismological Society of America, v. 86, p. 212-220. Gomberg, J., Bodin, P., Hellman, S., and Pratusevich, G., 1996, Aftershock Readiness Training Goes Big in Memphis: Seismological Research Letters, v. 67, p. 40-41. Gomberg, J., Bodin, P., Hellman, S., and Pratusevich, G., 1996, PASSCAL Training Goes Big in Memphis: IRIS Newsletter, v. 15, p. 10-11. Gomberg, J., Bodin, P., Savage, W., and Jackson, M., 1996, Slidequakes and fault creep at the Slumgullion landslide: an analog to crustal tectonics in The Slumgullion Earth flow: A Large Scale Natural Laboratory, U.S. Geological Survey Bulletin B2130, p. 85-92. Gomberg, J., and Davis, S., 1996, Stress/strain changes and triggered seismicity at The Geysers, California: Journal of Geophysical Research, v. 101,  p. 733-749.  1995 Bodin, P. and Gomberg, J., 1995, Earthquake hazard - Correspondence, Nature, v. 374, p. 492. Gomberg, J., 1995, Earthquake induced seismicity: Evidence from the Ms7.4 Landers, earthquake and The Geysers geothermal field, California in "Earthquakes Induced by Underground Nuclear Explosions: Environmental and Ecological Problems", eds. R. Console and A. Nikolaev, Publ. Springer-Verlag, Berlin, p. 201-214. Gomberg, J.S., 1995, Seismic networks: the basics of why, how, and what we learn from them, in Instituto Geografico Nacional de Espana Volume, in Redes Sísmicas Regionales, Instituto Geografico Nacional Monografia Núm. 11, ed. J. Mezcua, p.9-62. Gomberg, J., Bodin, P., Savage, W., and Jackson, M., 1995, The Slumgullion earthflow, Colorado: A useful analog to crustal tectonics, Geology, v. 23, p. 41-44. Gomberg, J. and Schweig, E.S., "The Mississippi Valley -Whole Lotta Shakin' Going On", USGS Fact Sheet 168-95, 2 p. Meremonte, M., Gomberg, J., Cranswick, E., 1995, Constraints on the June 29, 1992 Little Skull Mountain, Nevada earthquake sequence provided by robust hypocenter estimates: Bulletin of the Seismological Society of America, v. 85, p. 1039-1049. 1994 Bodin, P., Bilham, R., Behr, J., Gomberg, J., and Hudnut, K., 1994, Slip Triggered on southern California faults by the Landers earthquake sequence:  Bulletin of the Seismological Society of America, v. 84, p. 806-816. Bodin, P. and Gomberg, J., 1994, Triggered seismicity and deformation between the Landers, California, and Little Skull Mountain, Nevada, earthquakes: Bulletin of the Seismological Society of America, v. 84, p. 835-843. Gomberg, J. and Bodin, P. 1994, Triggering of the Little Skull Mountain, Nevada earthquake with dynamic strains: Bulletin of the Seismological Society of America, v. 84, p. 844-853. Gomberg, J.S., and Ellis, M.A., 1994, Topography and tectonics of the central New Madrid Seismic zone:  results of numerical experiments using a three-dimensional boundary-element program: Journal of Geophysical Research, v. 99, p. 20299-20310. 1993 Gomberg, J.S., and M.A. Ellis, 1993, 3D-DEF: A user's manual, U.S. Geological Survey Open-file Report 93-547, 22 p. Hill, D., Reasenberg, P., Michael, A., Simpson, R., Brune, J., DePolo, D., Smith, R., Nava, S., Gomberg, J., Beroza, G., Arabasz, W., Walter, S., Johnston, M., Jones, L., Ellsworth, W., and Zollweg, J., 1993, Remote seismicity  triggered by the M7.5 Landers, California earthquake of June 28, 1992: Science, v. 260, p. 1617-1623. Meremonte, M., Cranswick, E., Gomberg, J., and the U.S.G.S. Little Skull Mountain Aftershock Investigation Team, 1993, Report on Seismologic Field Investigations of the 29 June 1992 Little Skull Mountain Earthquake: U.S. Geological Survey Open-file Report 93-555, 95 p.. King, G.C.P., Tselentis, A., Gomberg, J., Molnar, P., Roecker, S.W., Sinvhal, H., Soufleris, C., and Stock, J., 1983, Micro-earthquake seismicity and active tectonics in northwestern Greece:  Earth and Planetary Science Letters, v. 66. 1992 Gomberg, J.S., 1992, Tectonic deformation in the New Madrid seismic zone--Inferences from boundary element    modeling:  Seismological Research Letters, v. 63, p. 407-426. Gomberg, J.S., 1992, Reply to Comment on "Seismicity and detection/location threshold in the Southern Great Basin Seismic Network" by Joan Gomberg:  Journal of Geophysical Research, v. 97, p. 15363-15364. Gomberg, J.S., 1992, Tectonic deformation in the New Madrid seismic zone:  Inferences from map-view and cross-sectional boundary element models:  Journal of Geophysical Research, v. 98, p. 6639-6664. Gomberg, J.S., 1992, Correction to "Seismicity and shear strain in the Southern Great Basin of Nevada and California" by Joan Gomberg:  Journal of Geophysical Research, v. 97, p. 4473-4476. 1991 Gomberg, J.S., ed., 1991, U.S. Geological Survey Committee for the Advancement of Science in the Yucca Mountain Project Symposium on "Fractures, Hydrology, and Yucca Mountain"--Abstrs. and Summary:  U.S. Geological Survey Open-File Report 91-125, 39 p. Gomberg, J.S., 1991, Seismicity and shear strain in the Southern Great Basin of Nevada and California:  Journal of Geophysical Research, v. 96, p. 16,383-16,400. Gomberg, J.S., 1991, Seismicity and detection/location threshold in the Southern Great Basin Seismic Network: Journal of Geophysical Research, v. 96, p. 16,401-16,414. Harmsen, S., Gomberg, J.S., and Richards, P.G., 1991, Shallow seismicity following selected nuclear explosions at the Nevada test Site:  Proceedings of the 13th Annual PL/DARPA Seismic Research Symposium, p. 237-240. Gomberg, J., Bodin, P., and Martinov. V., 1988, Seismic system calibration using cross-spectral methods from in situ measurements--the Kazakh, USSR, Phase I array:  Seismological Society of America Bulletin, v. 78, p. 1380-1386. 1990 Gomberg, J., Shedlock, K., and Roecker, S., 1990, The effect of S wave arrival times on the accuracy of hypocenter estimation:  Seismological Society of America Bulletin, v. 80, p. 1605-1628. 1989 Gomberg, J., 1989, Seismic network configuration, earthquake hypocenter determination; a re-evaluation and new approaches to old problems:  US Geological Survey Retreat on Earth-Science Studies for the Yucca Mountain Project. Gomberg, J., Priestley, K., and Brune, J., 1989, The compressional velocity structure of the crust and upper mantle of northern Mexico and the border region:  Seismological Society of America Bulletin, v. 79, p. 1496-1519. 1988 Gomberg, J., and Masters, T.G., 1988, Waveform modeling using locked-mode synthetic and differential seismograms--application to determination of the structure of Mexico:  Geophysical Journal of the Royal Astronomical Society, v. 94, p. 193-218. Gomberg, J., Priestley, K., Masters, T.G., and Brune, J., 1988, The structure of the crust and upper mantle of northern  Mexico:  Geophysical Journal of the Royal Astronomical Society, v. 94, p. 1-20. Last Modified :     08/20/2007

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