Simon Fraser University

 

Publications

  1. Caravantes, G., Rymer, H., Zurek, J., Ebmeier, S., Blake, S. & Williams-Jones, G. (2017) Structures controlling volcanic activity within Masaya caldera, Nicaragua. J. Volcanol. Geotherm. Res., Submitted.

  2. Rymer H., Martinez M., Brenes J., Van der Laat R., Williams-Jones, G. & Borgia A. (2017) Geophysical precursors to changes in activity at Poás. In Tassi, F., Vaselli, O. & Mora-Amador, R. (Eds.) Poás volcano (Costa Rica): The pulsing heart of Central America Volcanic Zone, Springer International.

  3. Miller, C.A., Le Mevel, 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. J. Geophys. Res., 122, doi: 10.1002/2017JB014048.

  4. Miller, C.A., Williams-Jones, G., Fournier, D. & Witter, J. (2017) 3D gravity inversion and thermodynamic modelling reveal properties of shallow silicic magma reservoir beneath Laguna del Maule, Chile. Earth Planet. Sci. Lett.,459, 14-27, doi: 10.1016/j.epsl.2016.11.007.

  5. MacQueen, P.G., Zurek, J. & Williams-Jones, G. (2016) Connected magma plumbing system between Cerro Negro and the el Hoyo Complex, Nicaragua revealed through gravity survey. J. Volcanol. Geotherm. Res., 327, 375-384, doi: 10.1016/j.jvolgeores.2016.09.002.

  6. Venugopal, S., Moune, S. & Williams-Jones, G. (2016) Investigating the subsurface connection beneath Cerro Negro Volcano and the El Hoyo Complex, Nicaragua. J. Volcanol. Geotherm. Res., 325, 211-224, doi: 10.1016/j.jvolgeores.2016.06.001

  7. Miller, C.A. & Williams-Jones, G. (2016) Internal structure and volcanic hazard potential of Mt Tongariro, New Zealand, from 3D geologically constrained gravity and magnetic models. J. Volcanol. Geotherm. Res., 319, 12-28.

  8. Caudron, C., Mauri, G., Williams-Jones, G., Lecocq, T., Syahbana, d.K., 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, Geol. Soc. London, 437, doi:10.1144/SP437.4

  9. van Hinsberg, V.J., Vigouroux, N., Palmer, S.J., Berlo, K., Scher, S.,Mauri, G., Williams-Jones, A.E., 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, Geol. Soc. London, 437, 9-34, doi:10.1144/SP437.2

  10. Zurek, J., Williams-Jones, G., Trusdell, F. & Martin, S. (2015) The origin of Mauna Loa's Ninole Hills - Evidence of rift zone reorganization. Geophys. Res. Lett., 42, doi: 10.1002/2015GL065863.

  11. 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.

  12. Singer, B.S., Andersen, N.L., Le Mével, H., Feigl, K.L., DeMets, C., Tikoff, B., Thurber, C.H., Jicha, B.R., Cardona, C., Loreto, M., Gil, F., Unsworth, M.J., 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(12), 4-10, doi: 10.1130/GSATG216A.1.

  13. 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. Econ. Geol., 109, 1705-1733, doi:10.2113/econgeo.109.6.1705.

  14. Scher, S., Williams-Jones, A.E. & Williams-Jones, G. (2013) Fumarolic activity, acid-sulfate alteration and high-sulfidation epithermal precious metal mineralization in the crater of Kawah Ijen volcano, Java, Indonesia. Econ. Geol., 108, 1099-1118, doi:10.2113/?econgeo.108.5.1099.

  15. Vigouroux, N., Williams-Jones, G., & Hickson, C.J. (2013) Development of the MultiGAS for determining fumarole gas chemistry in geothermal systems. Geotherm. Res. Council Trans., 37, 1-14.

  16. Zurek, J.M. & Williams-Jones, G. (2013) The shallow magmatic system of Kilauea, Hawaii, revealed through Bouguer gravity and total magnetic anomaly mapping. J. Geophys. Res., 118, 3742-3752, doi: 10.1002/jgrb.50243.

  17. Mauri, G., Williams-Jones, G., Saracco, G. & Zurek, J.M. (2012) A geochemical and geophysical investigation of the hydrothermal complex of Masaya volcano, Nicaragua. J. Volcanol. Geotherm. Res., 227-228, 15-31, doi:10.1016/j.jvolgeores.2012.02.003.

  18. Vigouroux, N., Wallace, P., Williams-Jones, G., Kelly, K., Kent, A. & Williams-Jones, A.E. (2012) The sources of volatile and fluid-mobile elements in the Sunda arc: a melt inclusion study from Kawah Ijen and Tambora volcanoes, Indonesia. Geochem. Geophys. Geosyst., 13, Q09015, doi:10.1029/2012GC004192.

  19. 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. Geochem. Geophys. Geosyst., 13, Q10013, doi:10.1029/2012GC004341.

  20. Mauri, G., Williams-Jones, G. & Saracco, G. (2011) MWTmat - Application of Multi-scale wavelet tomography on potential fields, Comp. Geosci., 37, 1825–1835, doi:10.1016/j.cageo.2011.04.005.

  21. Mauri, G., Williams-Jones, G. & Saracco, G. (2010) Accurately determining the depths of hydrothermal systems by Self-potential and Multi-scale wavelet tomography, J. Volcanol. Geotherm. Res., 191, 233-244, doi: 10.1016/j.jvolgeores.2010.02.004.

  22. 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.

  23. Nadeau, P.A. & Williams-Jones, G. (2009) Apparent downwind depletion of volcanic SO2 flux: Lessons from Masaya volcano, Nicaragua, Bull. Volcanol., 71, 389-400, doi: 10.1007/s00445-008-0251-9.

  24. Rymer, H., Locke, C.A., Borgia, A., Brenes, J., Martinez, M., 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.

  25. 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, Geophys. Res. Lett., 35, L20304, doi:10.1029/2008GL034921.

  26. Branan, Y., Harris, A., Watson, I.M., Phillips, J.C., Horton, K., Williams-Jones, G. & Garbeil, H. (2008) Investigation of at-vent dynamics and dilution using thermal infrared radiometers at Masaya volcano, Nicaragua. J. Volcanol. Geotherm. Res., 169, 34-47, doi:10.1016/j.jvolgeores.2007.07.021.

  27. 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.

  28. 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.

  29. Vigouroux, N., Williams-Jones, G., Geist, D., Chadwick, W., Ruiz, A. & Johnson, D. (2008) 4D gravity changes associated with the 2005 eruption of Sierra Negra volcano, Galapagos, Geophysics, 73:6, WA29-WA35, doi:10.11901/1.2987399.

  30. Williams-Jones, G., Rymer, H., Mauri, G., Gottsmann, J., Poland, M. & Carbone, D. (2008) Towards continuous 4D microgravity monitoring of volcanoes, Geophysics, 73:6, WA19-WA28, doi:10.1190/1.2981185.

  31. 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.

  32. 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., Bull. Volcanol., 68:5, 420-431, doi: 10.1007/s0445-005-0018-5.

  33. 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, Bull. Volcanol., 68:4, 313-322, doi: 10.1007/s00445-005-0026-5.

  34. Horton, K., Williams-Jones, G., Garbeil, H., Sutton, A.J., Elias, T. & Clegg, S. (2006) FLYSPEC: Validation of a robust and versatile ultraviolet correlation spectrometer for the real-time measurements of volcanic SO2 emissions. Bull. Volcanol., 68:4, 323-327, doi: 10.1007/s00445-005-0014-9.

  35. Williams-Jones, G., Horton, K., Garbeil, H., Mouginis-Mark, P.J., Harris, A.J.L., Sutton, A. J. & Elias, T. (2006) Accurately measuring volcanic plume velocities with multiple UV spectrometers. Bull. Volcanol., 68:4, 328-332, doi: 10.1007/s00445-005-0013-x.

  36. Rymer, H., Locke, C.A., Brenes, J. & Williams-Jones, G. (2005) Magma plumbing processes for persistent activity at Poás Volcano, Costa Rica. Geophys. Res. Lett., 32, L08307, doi:10.1029/2004GL022284.

  37. Fournier, N., Rymer, H., Williams-Jones, G.& Brenes, J. (2004) High-resolution gravity survey: investigation of subsurface structures at Poás volcano, Costa Rica.Geophys. Res. Lett., 31/15, L15602 10.1029/2004GL020563

  38. McGonigle, A.J.S., Delmelle, P., Oppenheimer, C., Tsanev, V.I., Delfosse, T., Williams-Jones, G., Horton, K. & Mather, T.A. (2004) SO2 depletion in tropospheric volcanic plumes.Geophys. Res. Lett., 31, L13201, 10.1029/2004GL019990.

  39. 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 Planet. Sci. Lett., 211, 295-309.

  40. Williams-Jones, G., Rymer, H., & Rothery, D.A. (2003) Gravity changes and passive degassing at the Masaya caldera complex, Nicaragua.J. Volcanol. Geotherm. Res., 123(1-2), 137-160.

  41. Williams-Jones, G.& Rymer, H. (2002) Detecting volcanic eruption precursors: A new method using gravity and deformation measurements. J. Volcanol. Geotherm. Res., 113 (3-4), 353-363.

  42. Williams-Jones, G., Stix, J., Heiligmann, M., Barquero, J., Fernandez, E. & Duarte Gonzalez, E. (2001) A model of degassing and seismicity at Arenal Volcano, Costa Rica. J. Volcanol. Geotherm. Res., 108 (1-4), 121-141.

  43. Rymer, H. & Williams-Jones, G. (2000) Volcanic eruption prediction: Magma chamber physics from gravity and deformation measurements.Geophys. Res. Lett., 27, 2389-2392.

  44. Williams-Jones, G., Stix, J., Heiligmann, M., Charland, A., Sherwood Lollar, B., Garzón V., G., Barquero, J., & Fernandez, E. (2000) A model of diffuse degassing at three subduction-related volcanoes. Bull. Volcanol., 62, 130-142.

  45. Williams-Jones, G. and 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.

  46. Delmelle, P., Baxter, P., Beaulieu, A., Burton, A., Francis, P., Garcia-Alvarez, J., Horrocks, L., Navarro, M., Oppenheimer, P., Rothery, D., Rymer, H., St. Amand, K., Stix, J., Strauch, W. and Williams-Jones, G. (1999) Origin, effects of Masaya volcano's continued unrest probed in Nicaragua EOS Transactions, Amer. Geophys. Union., 80, 575, 579, 581.

  47. 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. Bull. Volcanol., 59, 345-355.

  48. Williams-Jones, G., Williams-Jones, A.E. & Stix, J. (1998) The nature and origin of Venusian canali. J. Geophys. Res., 103, 8545-8555.

  49. Heiligmann, M., Stix, J., Williams-Jones, G., Sherwood Lollar, B. & Garzón V., G. (1997) Distal degassing of radon and carbon dioxide on Galeras volcano, Colombia. J. Volcanol. Geotherm. Res., 77, 267-284.