Refereed Publications

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Venugopal, S., Moune, S., Williams-Jones, G., Druitt, T., Wilson, A., Russell, J.K. & Vigouroux, N. (2019) Two distinct mantle sources beneath the Garibaldi Volcanic Belt: Insight from olivine-hosted melt inclusions. Chemical Geology, Submitted.
Caravantes, G., Rymer, H., Zurek, J., Ebmeier, S., Blake, S. & Williams-Jones, G. (2019) Structures controlling volcanic activity within Masaya caldera, Nicaragua. Volcanica, 2(1), 25-44, doi: 10.30909/vol.02.01.2544.
Rymer H., Martinez M., Brenes J., Williams-Jones, G. & Borgia A. (2019) Geophysical and Geochemical Precursors to Changes in Activity at Poás Volcano. In Tassi, F., Vaselli, O. & Mora-Amador, R. (Eds.) Poás volcano (Costa Rica): The pulsing heart of Central America Volcanic Zone, Springer International, p. 203-211, doi: 10.1007/978-3-319-02186-0_8.
Wespestad, C.E., Thurber, C.H., Andersen, N.L., Singer, B.S., Cardona, C., Zeng, X., Bennington, N.L., Keranen, K., Peterson, D.E., Cordell, D., Unsworth, M., Miller, C. & Williams-Jones, G. (2019) Magma reservoir below Laguna del Maule Volcanic Field, Chile, imaged with surface‐wave tomography. Journal of Geophysical Research - Solid Earth, 124, doi: 10.1029/2018JB016485.
Witter, J.B., Trainor-Guitton, W.J. & Siler, D.L. (2019) Uncertainty and Risk Evaluation During the Exploration Stage of Geothermal Development: A Review. Geothermics, 78, 233–242, doi: 10.1016/j.geothermics.2018.12.011.
Zurek, J., Moune, S., Williams-Jones, G., Vigouroux, N. & Gauthier, P.-J. (2019) Melt inclusion evidence for long term steady-state volcanism at Las Sierras-Masaya volcano, Nicaragua. Journal of Volcanology and Geothermal Research, doi: 10.1016/j.jvolgeores.2019.04.007.
Fraser, T.A., Grasby, S.E., Witter, J.B., Colpron, M. & Relf, C. (2018) Geothermal studies in Yukon – collaborative efforts to understand ground temperature in the Canadian North. Transactions - Geothermal Resources Council 42.
Mauri,G., Saracco, G., Labazuy, P., & Williams-Jones, G. (2018) Correlating hydrothermal system dynamics and eruptive activity - A case-study of Piton de la Fournaise volcano, Réunion. Journal of Volcanology and Geothermal Research, 363, 23–39, doi: 10.1016/j.jvolgeores.2018.08.009.
Miller, C.A., Currenti, G., Hamling, I., & Williams-Jones, G. (2018) Mass transfer processes in a post eruption hydrothermal system: parameterisation of microgravity changes at Te Maari craters, New Zealand. Journal of Volcanology and Geothermal Research, 357, 39–55, doi: 10.1016/j.jvolgeores.2018.04.005.
Roberti, G., Ward, B., van Wyk de Vries, B., Falorni, G., Menounos, B., Friele, P., Williams-Jones, G., Clague, J.J., Perotti, G., Giardino, M., Baldeon, G. & Freschi, S. (2018) Landslides and glacier retreat at Mt. Meager volcano: Hazard and risk challenges. In: Proceedings of the 7th Canadian Geohazards Conference: Engineering Resiliency in a Changing Climate.
Siler, D.L., Faulds, J.E., Glen, J.M.G., Hinz, N.H., Witter, J.B., & the Fallon FORGE Team (2018) New data yield new geologic insights at the Fallon FORGE site, Carson Sink Region, Nevada. Transactions - Geothermal Resources Council 42.
Witter, J.B. & Melosh, G. (2018) The value and limitations of 3D Models for geothermal exploration Proceedings, 43rd Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 12-14, 2018 SGP-TR-213.
Witter, J.B., Glen, J.M.G., Siler, D.L. & Fournier, D. (2018) 2D and 3D Potential Field Mapping and Modelling at the Fallon FORGE site, Nevada, USA. Transactions - Geothermal Resources Council 42.
Witter, J.B. Miller, C.A., Friend, M. & Colpron, M. (2018) Curie point depths and heat production in Yukon, Canada Proceedings, 43rd Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 12-14, 2018 SGP-TR-213.
Miller, C., Le Mével, H., Currenti, G., Williams-Jones, G. & Tikoff, B. (2017) 4D gravity changes at the Laguna del Maule volcanic field: Magma induced stress changes facilitate mass addition. Journal of Geophysical Research: Solid Earth, 122, doi: 10.1002/2017JB014048.
Schermerhorn, W.D., Ritzinger, B., Anderson, M., Witter, J., Glen, J., Forson, C., Stelling, P. & Fournier, D. (2017) Geothermal exploration of Mount Baker hot springs through ground-based magnetic and gravity surveys. Proceedings, 42nd Workshop on Geothermal Reservoir Engineering Stanford University, SGP-TR-212
Witter, J. & Miller, C. (2017) Curie point depth mapping in Yukon. Yukon Geological Survey Open File 2017-3, 37 p.
Caudron, C., Mauri, G., Williams-Jones, G., Lecocq, T., Syahbana, D., De Plaen, R., Peiffer, L., Bernard, A. & Saracco, G. (2016) New insights into Kawah Ijen hydrothermal system from geophysical data. Special Issue on Volcanic Lakes, Geological Society Special Publication 437, doi: 10.1144/SP437.4
MacQueen, P., Zurek, J. & Williams-Jones, G. (2016) Connected magma plumbing system between Cerro Negro and the el Hoyo Complex, Nicaragua revealed through gravity survey. Journal of Volcanology and Geothermal Research, 327, 375-384, doi: 10.1016/j.jvolgeores.2016.09.002
Miller, C. & Williams-Jones, G. (2016) Internal structure and volcanic hazard potential of Mt Tongariro, New Zealand, from 3D geologically constrained gravity and magnetic models. Journal of Volcanology and Geothermal Research, 319, 12-28, doi: 10.1016/j.jvolgeores.2016.03.012
Venugopal, S., Moune, S. & Williams-Jones, G. (2016) Investigating the subsurface connection beneath Cerro Negro Volcano and the El Hoyo Complex, Nicaragua. Journal of Volcanology and Geothermal Research, 325, doi: 10.1016/j.jvolgeores.2016.06.001
Witter, J.B. Siler, D.L., Faulds, J.E. & Hinz, N.H. (2016) 3D geophysical inversion modeling of gravity data to test the 3D geologic model of the Bradys geothermal area, Nevada, USA. Geothermal Energy, 4, doi: 10.1186/s40517-016-0056-6
Singer, B., Andersen, N., Le Mével, H., Feigl, K., DeMets, C., Tikoff, B., Thurber, C., Jicha, B., Wespestad, C., Cardona, C., Córdova, L., Amigo, A., Unsworth, M., Cordell, D., Williams-Jones, G., Miller, C., Fierstein, J., Hildreth, W., Sruoga, P., Costa, F., Peterson, D. & Keranen, K. (2015) The large, restless, rhyolitic magma system at Laguna del Maule, southern Andes: Its dynamics and hazards. In: Proceedings of the XIV Congreso Geologico Chileo.
Van Hinsberg, V., Vigouroux, N., Palmer, S., Berlo, K., Mauri, G., Williams-Jones, A., Mckenzie, J., Williams-Jones, G. & Fischer, T. (2015) Element flux to the environment of the passively degassing Kawah Ijen volcano, Indonesia, and implications for estimates of the global volcanic flux. Special Issue on Volcanic Lakes, Geological Society Special Publication 437, doi: 10.1144/SP437.2
Williams-Jones, G. & Rymer, H. (2015). Hazards of Volcanic Gases. In H. Sigurdsson, B. Houghton, H. Rymer, J. Stix, S. McNutt (Eds.), The Encyclopedia of Volcanoes. 2nd Ed. Academic Press, 985-992, doi: 10.1016/B978-0-12-385938-9.00057-2.
Zurek, J., Williams-Jones, G., Trusdell, F. & Martin, S. (2015) The origin of Mauna Loa's Ninole Hills - Evidence of rift zone reorganization. Geophysical Research Letters, 42, doi: 10.1002/2015GL065863.
Singer, B., Andersen, N., Le Mével, H., Feigl, K., DeMets, C., Tikoff, B., Thurber, C., Jicha, B., Cardona, C., Córdova, L., Gil, F., Unsworth, M., Williams-Jones, G., Miller, C., Fierstein, J., Hildreth, W. & Vazquez, J. (2014) Dynamics of a large, restless, rhyolitic magma system at Laguna del Maule, southern Andes, Chile. GSA Today, 24, 4-10, doi: 10.1130/GSATG216A.1.
King, J., Williams-Jones, A.E., van Hinsberg, V. & Williams-Jones, G. (2014) High-sulphidation epithermal Au (Ag-Cu) ore formation by condensed magmatic vapours on Sangihe Island, Indonesia. Economic Geology, 109, 1705-1733, doi:10.2113/econgeo.109.6.1705.
Vigouroux, N., Williams-Jones, G. & Hickson, C. (2013) Development of the MultiGAS for determining fumarole gas chemistry in geothermal systems. Transactions - Geothermal Resources Council 37, 1-14.
Zurek, J. & Williams-Jones, G. (2013) The shallow magmatic system of Kilauea, Hawaii, revealed through Bouguer gravity and total magnetic anomaly mapping. Journal of Geophysical Research: Solid Earth, 118, 3742–3752, doi: 10.1002/jgrb.50243.
Mauri, G., Williams-Jones, G., Saracco, G. & Zurek, J. (2012) A geochemical and geophysical investigation of the hydrothermal complex of Masaya volcano, Nicaragua. Journal of Volcanology and Geothermal Research, 227-228, 15-31, doi:10.1016/j.jvolgeores.2012.02.003.
Vigouroux, N., Wallace, P., Williams-Jones, G., Kelley, K., Kent, A. & Williams-Jones, A. (2012) The sources of volatile and fluid-mobile elements in the Sunda arc: a melt inclusion study from Kawah Ijen and Tambora volcanoes, Indonesia. Geochemistry, Geophysics, Geosystems, 13, Q09015, doi:10.1029/2012GC004192.
Zurek, J.M., Williams-Jones, G., Johnson, D. & Eggers, A. (2012) Constraining volcanic inflation at Three Sisters Volcanic Field in Oregon, U.S.A., through microgravity and deformation modelling. Geochemistry Geophysics Geosystems, 13, Q10013, doi:10.1029/2012GC004341.
Mauri, G., Williams-Jones, G. & Saracco, G. (2011) MWTmat - Application of Multi-scale wavelet tomography on potential fields, Computers & Geoscience, 37, 1825–1835, doi:10.1016/j.cageo.2011.04.005.
Mauri, G., Williams-Jones, G. & Saracco, G. (2010) Depth determinations of shallow hydrothermal systems by self-potential and multi-scale wavelet tomography, Journal of Volcanology and Geothermal Research, 191, 233-244, doi: 10.1016/j.jvolgeores.2010.02.004.
Hickson, C.J., Kelman, M.C., Chow, W., Shimamura, K., Servranckx, R., Bensimon, D., Cassidy, J.F., Trudel, S., & Williams-Jones, G. (2009) Nazko region volcanic hazard map, Geological Survey of Canada, Open File 5978, 1 sheet.
Nadeau, P. A. & Williams-Jones, G. (2009) Apparent downwind depletion of volcanic SO2 flux: Lessons from Masaya volcano, Nicaragua, Bulletin of Volcanology, 71, 389-400, doi: 10.1007/s00445-008-0251-9.
Rymer, H., Locke, C. A., Borgia, A., Martinez, M., Brenes, J., Van der Laat, R. & Williams-Jones, G. (2009) Long-term fluctuations in volcanic activity: implications for future environmental impact. Terra Nova, 21, 304-309, doi: 10.1111/j.1365-3121.2009.00885.x.
Vigouroux, N., Williams-Jones, A.E., Wallace, P. & Staudacher, T. (2009) The November 2002 eruption of Piton de la Fournaise, Réunion: tracking the pre-eruptive thermal evolution of magma using melt inclusions, Bulletin of Volcanology, 71, 1077-1089, doi:10.1007/s00445-009-0287-5.
Branan, Y., Harris, A., Watson, I., Phillips, J., Horton, K., Williams-Jones, G. & Garbeil, H. (2008) Investigation of at-vent dynamics and dilution using thermal infrared radiometers at Masaya volcano, Nicaragua. Journal of Volcanology and Geothermal Research, 169, 34-47, doi: 10.1016/j.jvolgeores.2007.07.021.
Crider, J. G., Hill Johnsen, K. & Williams-Jones, G. (2008) Thirty-year gravity change at Mt. Baker Volcano, Washington, USA: Extracting the signal from under the ice. Geophysical Research Letters, 35, L20304, doi:10.1029/2008GL034921.
Nadeau, P.A. & Williams-Jones, G. (2008) Beyond COSPEC - Recent advances in SO2 monitoring technology. In: Williams-Jones, G., Stix, J. & Hickson, C. (Eds.), The COSPEC Cookbook: Making SO2 Measurements at Active Volcanoes. IAVCEI Methods in Volcanology, 1, 219-233.
Davies, A.G.S., Cooke, D.R., Gemmell, J.B. & Simpson, K.A. (2008) Diatreme breccias at the Kelian gold mine, Kalimantan, Indonesia: precursors to epithermal gold mineralization. Economic Geology, 103, 689-716, doi: 10.2113/gsecongeo.103.4.689.
Stix, J., Williams-Jones, G. & Hickson, C. (2008) Applying the COSPEC at Active Volcanoes. In: Williams-Jones, G., Stix, J. & Hickson, C. (Eds.), The COSPEC Cookbook: Making SO2 Measurements at Active Volcanoes. IAVCEI Methods in Volcanology, 1, 121-167.
Vigouroux, N., Williams-Jones, G., Chadwick, W., Geist, D., Ruiz, A. & Johnson, D. (2008) 4D gravity changes associated with the 2005 eruption of Sierra Negra volcano, Galapagos. Geophysics, 73, WA29-WA35, doi: 10.1190/1.2987399.
Williams-Jones, G., Rymer, H., Mauri, G., Gottsmann, J., Poland, M. & Carbone, D. (2008) Towards continuous 4D microgravity monitoring of volcanoes. Geophysics, 73, WA19-WA28, doi: 10.1190/1.2981185.
Williams-Jones, G., Stix, J. & Nadeau, P.A. (2008) Using the COSPEC in the Field. In: Williams-Jones, G., Stix, J. & Hickson, C. (Eds.), The COSPEC Cookbook: Making SO2 Measurements at Active Volcanoes. IAVCEI Methods in Volcanology, 1, 63-119.
Elias, T., Sutton, A.J., Oppenheimer, C., Horton, K.A., Garbeil, H., Tsanev, V. & Williams-Jones, G. (2006) Comparison of COSPEC and two miniature ultraviolet spectrometer systems for SO2 measurements using scattered sunlight, Bulletin of Volcanology, 68:4, 313-322, doi: 10.1007/s00445-005-0026-5.
Horton, K. A., Williams-Jones, G., Garbeil, H., Elias, T., Sutton, a. J., Mouginis-Mark, P., Porter, J. N. & Clegg, S. (2006) FLYSPEC: Validation of a robust and versatile ultraviolet correlation spectrometer for the real-time measurements of volcanic SO2 emissions. Bulletin of Volcanology, 68, 323-327, doi: 10.1007/s00445-005-0014-9.
Simpson, K.A., Stasiuk, M., Shimamura, K., Clague, J.J. & Friele, P. (2006) Evidence for catastrophic volcanic debris flows in Pemberton Valley, British Columbia. Canadian Journal of Earth Science, 43, 679–689, doi: 10.1139/e06-026.
Williams-Jones, G., Horton, K. A., Elias, T., Garbeil, H., Mouginis-Mark, P. J., Sutton, A. J. & Harris, A. J. (2006) Accurately measuring volcanic plume velocities with multiple UV spectrometers. Bulletin of Volcanology, 68, 328-332, doi: 10.1007/s00445-005-0013-x.
de Zeeuw-van Dalfsen, E., Rymer, H., Williams-Jones, G., Sturkell, E. & Sigmundsson, F. (2006) The integration of micro-gravity and geodetic data at Krafla Volcano, N. Iceland. Bulletin of Volcanology, 68, 420-431, doi: 10.1007/s00445-005-0018-5.
Rymer, H., Locke, C. A., Brenes, J. & Williams-Jones, G. (2005) Magma plumbing processes for persistent activity at Poás Volcano, Costa Rica. Geophysical Research Letters, 32, 2-5, L08307, doi:10.1029/2004GL022284.
Robertson, R. & Simpson, K.A. (2005) St. Kitts. In: Lindsay, J. M., Robertson, R.E.A., Shepherd, J.B., & Ali, S. (eds), Volcanic Hazard Atlas of the Lesser Antilles, Seismic Research Unit, The University of the West Indies, Trinidad and Tobago, W. I., 204-217.
Simpson, K.A. (2005) Nevis. In: Lindsay, J. M., Robertson, R.E.A., Shepherd, J.B., & Ali, S. (eds), Volcanic Hazard Atlas of the Lesser Antilles, Seismic Research Unit, The University of the West Indies, Trinidad and Tobago, W.I., 169-178.
Friele, P.A., Clague, J.J., Simpson, K.A. & Stasiuk, M. (2005). Impact of a Quaternary volcano on Holocene sedimentation in Lillooet River valley, British Columbia. Sedimentary Geology, 176, 305-322.
Fournier, N., Rymer, H., Williams-Jones, G. & Brenes, J. (2004) High-resolution gravity survey: investigation of subsurface structures at Poás volcano, Costa Rica. Geophysical Research Letters, 31, L15602. doi: 10.1029/2004GL020563.
McGonigle, A., Delmelle, P., Oppenheimier, C., Tsanev, V., Delfosse, T., Williams-Jones, G., Horton, K. & Mather, T. A. (2004) SO2 depletion in tropospheric volcanic plumes. Geophysical Research Letters, 31, 2-5, doi: 10.1029/2004GL019990.
Gottsmann, J., Berrino, G., Rymer, H. & Williams-Jones, G. (2003) Hazard assessment during caldera unrest at the Campi Flegrei, Italy: A contribution from gravity-height gradients. Earth and Planetary Science Letters, 211, 295-309, doi: 10.1016/S0012-821X(03)00225-5.
Williams-Jones, G., Rymer, H. & Rothery, D. A. (2003) Gravity changes and passive degassing at the Masaya caldera complex, Nicaragua. Journal of Volcanology and Geothermal Research, 123, 137-160, doi: 10.1016/S0377-0273(03)00033-7.
Williams-Jones, G. & Rymer, H. (2002) Detecting volcanic eruption precursors: A new method using gravity and deformation measurements. Journal of Volcanology and Geothermal Research, 113, 379-389, doi: 10.1016/S0377-0273(01)00272-4.
Simpson, K.A. & McPhie, J. (2001) Fluidal-clast breccias generated by submarine fire fountaining, Trooper Creek Formation, Queensland Australia Journal of Volcanology and Geothermal Research, 109, 339-355, doi: 10.1016/S0377-0273(01)00199-8.
Williams-Jones, G., Stix, J., Heiligmann, M., Barquero, J., Fernandez, E. & Gonzalez, E. D. (2001) A model of degassing and seismicity at Arenal Volcano, Costa Rica. Journal of Volcanology and Geothermal Research, 108, 121-139, doi: 10.1016/S0377-0273(00)00281-X.
Rymer, H. & Williams-Jones, G. (2000) Volcanic eruption prediction: Magma chamber physics from gravity and deformation measurements. Geophysical Research Letters, 27, 2389, doi: 10.1029/1999GL011293.
Williams-Jones, G. & Rymer, H. (2000) Hazards of Volcanic Gases. In H. Sigurdsson, B. Houghton, H. Rymer, J. Stix, S. McNutt (Eds.), Encyclopedia of Volcanoes, Academic Press, 997-1004.
Williams-Jones, G., Stix, J., Heiligmann, M., Charland, A., Sherwood Lollar, B., Arner, N., Garzón, G. V., Barquero, J. & Fernandez, E. (2000) A model of diffuse degassing at three subduction-related volcanoes. Bulletin of Volcanology, 62, 130-142, doi: 10.1007/s004450000075.
Delmelle, P., Baxter, P., Beaulieu, A., Burton, M., Francis, P., Garcia-Alvarez, J., Horrocks, L., Navarro, M., Oppenheimer, P., Rothery, D., Rymer, H., St. Amand, K., Stix, J., Strauch, W. & Williams-Jones, G. (1999) Origin, effects of Masaya volcano's continued unrest probed in Nicaragua Eos, Transactions American Geophysical Union, 80, 575,579,581, doi: 10.1029/EO080i048p00575.
Rymer, H., van Wyk de Vries, B., Stix, J. & Williams-Jones, G. (1998) Pit crater structure and processes governing persistent activity at Masaya Volcano, Nicaragua. Bulletin of Volcanology, 59, 345-355, doi: 10.1007/s004450050196.
Williams-Jones, G., Williams-Jones, A.E. & Stix, J. (1998) The nature and origin of Venusian canali. Journal of Geophysical Research - Planets, 103, 8545-8555, doi: 10.1029/98JE00243.
Heiligmann, M., Stix, J., Williams-Jones, G., Sherwood Lollar, B. & Garzón, G. V. (1997) Distal degassing of radon and carbon dioxide on Galeras volcano, Colombia. Journal of Volcanology and Geothermal Research, 77, 267-283, doi: 10.1016/S0377-0273(96)00099-6.

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