Selected publications

• Nunn, C., B.R. Julian, G.R. Foulger, and N. Mhana, No evidence from seismic tomography for wave speed changes during the Mount Etna 2002-2003 eruption, in revision, Geophys. J. Int.
• Mhana, N., G.R. Foulger, B.R. Julian and C. Nunn, Time-dependent tomography of the Coso geothermal field, in preparation.
• Mhana, N., G.R. Foulger, B.R. Julian and C. Nunn, Time-dependent tomography of Long Valley caldera, in preparation.
• Foulger, G. R., M. P. Wilson, J. G. Gluyas, B. R. Julian, and R. J. Davies (2018), Global review of human-induced earthquakes, Earth-Science Reviews, 178, 438-514.
• Mhana, N., B.R. Julian, G.R. Foulger, A. Sabin and D. Meade, Time-dependent Seismic Tomography at the Coso Geothermal Field, 43rd Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 12-14, 2018 SGP-TR-213
• Wilson, M.P., G. R. Foulger, J. G. Gluyas, R. J. Davies and B. R. Julian, HiQuake: The Human-Induced Earthquake Database, Seis. Res. Lett., 88, 1560-1565, 2017.
• Mhana, N., B.R. Julian, G.R. Foulger and A. Sabin, Monitoring Geothermal Reservoir Depletion Using Time-dependent Seismic Tomography, Forty-second Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, 13-15 February, 2017.
• Foulger, G. R., M. Wilson and J. Gluyas, Earthquakes triggered by humans pose growing risk, The Conversation, 22 January, 2017.
• Foulger, G.R., M. Wilson, J.G. Gluyas and R. Davies, Human-induced earthquakes, Report, Mmax Workshop, World Trade Centre, Schiphol Airport, Amsterdam 8-10 March, pp. 288, 2016
• Mhana, N., C. Nunn, B.R. Julian, G.R. Foulger, Andrew Sabin, Time-Dependent Tomography Using TOMO4D: Theoretical Advances and Early Applications, Forty-first Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 22-24, 2016.
• Wilson, M., Davies, R, Foulger, G.R., Julian, B.R., Styles, P., Gluyas, J., Almond, S., Anthropogenic earthquakes in the UK and the implications for the exploitation of shale reservoirs, Mar. Pet. Geol., 68, 1-17, 2015.
• Julian, B.R., G.R. Foulger, A. Sabin, N. Mhana, TOMO4D: Temporal Changes in Reservoir Structure at Geothermal Areas, Proceedings, World Geothermal Congress, Melbourne, Australia, 19-25 April, 2015.
• Foulger, G.R., B.R. Julian. Non-double-couple earthquakes, in Encyclopedia of Earthquake Engineering, edited by M. Beer, A. I. Kougioumtzoglou, E. Patelli and S.-K. I. Au, pp. 1-31, Springer Berlin Heidelberg, Berlin, Heidelberg, 2014.
• Foulger, G.R., B.R. Julian, Maximizing EGS earthquake location accuracies,Proceedings, Thirty-Ninth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 24-26, 2014, SGP-TR-202.
• Davies, R.J., G.R. Foulger, S. Mathias, J. Moss, S. Hustoft and L. Newport, Reply: Davies et al. (2012), Hydraulic fractures: How far can they go?, Marine and Petroleum Geology, 43, 519-521, 2013.
  
• Davies, R. G.R. Foulger, A. Bindley, P. Styles, Induced seismicity and hydraulic fracturing for the recovery of hydrocarbons, Marine and Petroleum Geology, 45, 171-185, 2013.
• Foulger, G.R., G.F. Panza, I.M. Artemieva, I.D. Bastow, F. Cammarano, J.R. Evans, W.B. Hamilton, B.R. Julian, M. Lustrino, H. Thybo and T.B. Yanovskaya, Caveats on tomographic images, Terra Nova, 25, 259-281, doi: 10.1111/ter.12041, 2013.
• Foulger, G.R., B.R. Julian, Seismological software for geothermal monitoring, Thirty-Eighth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 11-13, 2013.
• Cladouhos, T., S. Petty, Y. Nordin, M. Moore, K. Grasso, M. Uddenberg, M. Sawyer, B. Julian, and G. Foulger, Microseismic monitoring of Newberry Volcano EGS Demonstration, Thirty-Eighth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 11-13, 2013.
• Julian, B.R., G.R. Foulger, Geothermal seismology: The state of the art, Thirty-Seventh Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, January 30 - February 1, 2012.
• Foulger, G.R. and B.R. Julian, Earthquakes and Errors: Methods for Industrial Applications, Geophysics, 76, WC5-WC15, doi:10.1190/geo2011-0096.1, 2011.
• Kendall, M., S. Maxwell, G. Foulger, L. Eisner & Z. Lawrence, Microseismicity: Beyond dots in a box – Introduction, Geophysics, 76, 1-3, 2011.
• Julian, B.R., G.R. Foulger, Mapping deep structure in geothermal areas using local and regional microearthquake data, Thirty-Sixth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, January 31 - February 2, 2011.
• Cladouhos, T., S. Petty, G.R. Foulger, B.R. Julian, M. Fehler, Injection induced seismicity and geothermal energy, Geothermal Research Council Bulletin, 34, 1213-1220, 2010.
• Julian, B.R. and G.R. Foulger, Time-dependent tomography, Geophys. J. Int., 182, 1327-1338, 2010.
• Julian, B.R., G.R. Foulger, F.C. Monastero and S. Bjornstad, Imaging Hydraulic Fractures in a Geothermal Reservoir, Geophys. Res. Lett., 37, L07305, 10.1029/2009GL040933.
• Julian, B.R., G.R. Foulger, Improved Methods for Mapping Permeability and Heat sources in Geothermal Areas using Microearthquake Data,Thirty-Fifth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 1-3, 2010.
• Julian, B.R. and G.R. Foulger, Monitoring Geothermal Processes with Microearthquake Mechanisms, Proceedings, Thirty-Fourth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 9-11, SGP-TR-187, 2009.
• Julian, B.R. and G.R. Foulger, Time-Dependent Seismic Tomography of Geothermal Systems, Proceedings, Thirty-Fourth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 9-11, SGP-TR-187, 2009.
• Julian, B.R., G.R. Foulger and F. Monastero, Seismic monitoring of EGS stimulation tests at the Coso geothermal field, California, using microearthquake locations and moment tensors, Proceedings, Thirty-Fourth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 9-11, SGP-TR-187, 2009.
• Foulger, G.R. and L. De Luca, Detailed image of fractures activated by a fluid injection in a producing Indonesian geothermal field, Proceedings, Thirty-Fourth Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, February 9-11, SGP-TR-187, 2009.
• Julian, B.R., G.R. Foulger and F. Monastero, Time-dependent seismic tomography and its application to the Coso geothermal area, 1996-2006, Proceedings, Thirty-Third Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, January 28-30, SGP-TR-185, 387-390, 2008.
• Foulger, G.R., B.R. Julian, B.R. and F. Monastero, Seismic monitoring of EGS tests at the Coso Geothermal area, California, using accurate MEQ locations and full moment tensors, Proceedings, Thirty-Third Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, January 28-30, SGP-TR-185, 261-268, 2008.
• Julian, B.R., G.R. Foulger and F. Monastero, Microearthquake moment tensors from the Coso Geothermal area, Proceedings, Thirty-Second Workshop on Geothermal Reservoir Engineering, Stanford University, Stanford, California, January 22-24, SGP-TR-183, 2007.
• Foulger, G.R., B.R. Julian, D.P. Hill, A.M. Pitt, P. Malin and E. Shalev, Non-double-couple microearthquakes at Long Valley Caldera provide evidence for hydraulic fracturing, J. Volc. Geotherm. Res., 132, 45-71, 2004.
• Julian, B.R., G.R. Foulger and K. Richards-Dinger, The Coso Geothermal Area: A laboratory for advanced MEQ studies for geothermal monitoring, Proceedings of the Geothermal Resources Council Annual Meeting, Palm Springs, California, August 2004.
• Julian, B.R. and G.R. Foulger, Microearthquake focal mechanisms – A tool for monitoring geothermal systems, Geotherm. Res. Council Bull., 33, 166-171, 2004.
• Foulger, G.R. and B.R. Julian, A powerful tool – Use of time-dependent MEQ tomography for monitoring producing geothermal reservoirs, Geotherm. Res. Council Bull., 33, 120-126, 2004.
• Foulger, G.R., B.R. Julian, A.M. Pitt, D.P. Hill, P. Malin and E. Shalev, Three-dimensional crustal structure of Long Valley caldera, California, and evidence for the migration of CO₂ under Mammoth Mountain, J. Geophys. Res., 108, B3, 10.1029/2000JB000041, 2003.
• Gunasekera, R.C, G.R. Foulger and B.R. Julian, Reservoir depletion at The Geysers geothermal area, California, shown by four-dimensional seismic tomography, J. Geophys. Res., 108, B3, 10.1029/2001JB000638, 2003.
• Du, Z., G.R. Foulger and W. Mao, Noise reduction for broadband, three-component seismograms using data-adaptive polarization filters, Geophys. J. Int., 141, 820-828, 2000
• Foulger, G.R. and P.R. Field, Comparison of local earthquake tomographic crustal models with gravity data for the Hengill and Krafla areas, Jökull, 48, 29-47, 2000
• Henderson, J.R., D.J. Barton and G.R. Foulger, Fractal clustering of induced seismicity in the Geysers geothermal area, California, Geophys. J. Int., 139, 317-324, 1999
• Ross, A., G.R. Foulger and B.R. Julian, Source processes of industrially-induced earthquakes at The Geysers geothermal area, California, Geophysics, 64, 1877-1889, 1999
• Barton, D.J., G.R. Foulger, J.R. Henderson and B.R. Julian, Frequency-magnitude statistics and spatial correlation dimensions of earthquakes at Long Valley caldera, California, Geophys. J. Int., 138, 563-570, 1999
• Miller, A.D., G.R. Foulger and B.R. Julian, Non-double-couple earthquakes 2. Observations, Rev. Geophys., 36, 551-568, 1998
• Julian, B.R., A.D. Miller and G.R. Foulger, Non-double-couple earthquakes 1. Theory, Rev. Geophys., 36, 525-549, 1998
• Miller, A.D., B.R. Julian and G.R. Foulger, Three-dimensional structure and moment tensors of non-double-couple earthquakes at the Hengill-Grensdalur volcanic complex, Iceland, Geophys. J. Int., 133, 309-325, 1998
• Foulger, G.R., B.R. Julian, D.P. Hill, G. Sharer, L.E. Foulger, R. Perlroth, N. Dotson, A.M. Pitt and E. Brodsky, A microearthquake survey of the Mammoth Mountain area, Long Valley caldera, California, summer 1997, U.S. Geological Survey Open-File Report OF 98-236, 1998
• Julian, B.R., A.M. Pitt and G.R. Foulger, Seismic image of a CO₂ reservoir beneath a seismically active volcano, Geophys. J. Int., 133, 7-10, 1998
• Sigmundsson, F., P. Einarsson, S.T. Rognvaldsson, G.R. Foulger, K.M. Hodgkinson and G. Thorbergsson, The 1994-1995 seismicity and deformation at the Hengill triple junction, Iceland: Triggering of earthquakes by minor magma injection in a zone of horizontal shear stress, J. Geophys. Res., 102, 15,151-15,161, 1997
• Julian, B.R., A.D. Miller and G.R. Foulger, Non-double-couple earthquakes at the Hengill-Grensdalur geothermal area, southeast Iceland, Geophys. Res. Lett., 24, 743-746, 1997
• Foulger, G.R., C.C. Grant, B.R. Julian and A. Ross, Industrially induced changes in Earth structure at The Geysers geothermal area, California, Geophys. Res. Lett., 24, 135-137, 1997
• Julian, B.R. and G.R. Foulger, Earthquake mechanisms from linear-programming inversion of seismic-wave amplitude ratios, Bull. Seismol. Soc. Am., 86, 972-980, 1996
• Ross, A., G.R. Foulger and B.R. Julian, Non-double couple earthquake mechanisms at The Geysers geothermal area, California, Geophys. Res. Lett., 23, 877-880, 1996
• Julian, B.R., A. Ross, G.R. Foulger and J.R. Evans, Three-dimensional image of a geothermal reservoir: The Geysers, California, Geophys. Res. Lett., 23, 685-688, 1996
• Evans, J.R., G.R. Foulger, B.R. Julian and A.D. Miller, Shear-wave splitting from local earthquakes in the Hengill triple junction region, southwest Iceland, Geophys. Res. Lett., 23, 455-458, 1996
• Foulger, G.R., The Hengill geothermal area, Iceland – variation of temperature gradients deduced from the maximum depth of seismogenesis, J. Volc. Geotherm. Res., 65, 119-133, 1995
• Foulger, G.R., A.D. Miller, B.R. Julian and J.R. Evans, Three-dimensional V_p and V_p/V_s structures of the Hengill triple junction and geothermal area, Iceland and the repeatability of tomographic inversions, Geophys. Res. Lett., 22, 1309-1312, 1995
• Evans, J.R., B.R. Julian, G.R. Foulger and A. Ross, Shear-wave splitting and wave-speed anisotropy of local earthquakes at The Geysers geothermal field, California, Geophys. Res. Lett., 22, 501-504, 1995
• Arnott, S.K. and G.R. Foulger, The Krafla spreading segment, Iceland : 2. The accretionary stress cycle and non-shear earthquake focal mechanisms, J. Geophys. Res., 99, 23,826-23,842, 1994b
• Arnott, S.K. and G.R. Foulger, The Krafla spreading segment, Iceland: 1. Three dimensional crustal structure and the spatial and temporal distribution of local earthquakes, J. Geophys. Res., 99, 23,801-23,826, 1994a
• Julian, B.R., A.D. Miller and G.R. Foulger, Non-shear focal mechanisms of earthquakes at The Geysers, CA., and Hengill, Iceland, geothermal areas, Trans. Geotherm. Res. Council, 17, 123-128, 1993
• Julian, B.R., A. Prisk, G.R. Foulger and J.R. Evans, Three-dimensional images of geothermal systems: Local earthquake P-wave velocity tomography at the Hengill and Krafla geothermal areas, Iceland, and The Geysers, CA., Trans. Geotherm. Res. Council, 17, 113-121, 1993
• Foulger, G.R. and S.K. Arnott, Local Tomography: volcanoes and the accretionary plate boundary in Iceland, Seismic Tomography: Theory and Practice, H.M. Iyer and K. Hirahara (Eds.), Chapman and Hall, 644-675, 1993
• Foulger, G.R. and B.R. Julian, Non-double-couple earthquakes at the Hengill-Grensdalur volcanic complex, Iceland: Are they artifacts of crustal heterogeneity?, Bull. Seismol. Soc. Am., 83, 38-52, 1993
• Foulger, G.R. and R.E. Long, Non-double couple earthquake focal mechanisms and the accretionary tectonic cycle, in: Volcanic Seismology, IAVCEI Proceedings in Volcanology 3, P. Gasparini, R. Scarpa and K. Aki (Eds.), Springer-Verlag, 223-234, 1992
• Foulger, G.R., C.-H Jahn, G. Seeber, P. Einarsson, B.R. Julian and K. Heki, Post rifting stress relaxation at the accretionary plate boundary in Iceland, measured using the Global Positioning System, Nature, 358, 488-490, 1992
• Foulger, G.R. and D.R. Toomey, Structure and evolution of the Hengill-Grensdalur central volcano complex, Iceland: Geology, geophysics and seismic tomography, J. Geophys. Res., 94, 17,511-17,522, 1989
• Toomey, D.R. and G.R. Foulger, Application of tomographic inversion to local earthquake data from the Hengill-Grensdalur central volcano complex, Iceland, J. Geophys. Res., 94, 17,497-17,510, 1989
• Foulger, G.R., R.E. Long, P. Einarsson and A. Bjornsson, Implosive earthquakes at the active accretionary plate boundary in northern Iceland, Nature, 337, 640-642, 1989
• Foulger, G., The Hengill triple junction, SW Iceland: 2. Anomalous earthquake focal mechanisms and implications for process within the geothermal reservoir and at accretionary plate boundaries, J. Geophys. Res., 93, 13,507-13,523, 1988
• Foulger, G., The Hengill triple junction, SW Iceland: 1. Tectonic structure and the spatial and temporal distribution of local earthquakes, J. Geophys. Res., 93, 13,493-13,506, 1988
• Foulger, G. and R.E. Long, Anomalous focal mechanism solutions: evidence for tensile crack formation on an accreting plate boundary, Nature, 310, 43-45, 1984
• Foulger, G., Geothermal exploration and reservoir monitoring using earthquakes and the passive seismic method, Geothermics, 11, 259-268, 1982