Simon Fraser University

SFU.ca Burnaby

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Volcanology

Publications

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. Geosys., Submitted.

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., In Press.

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.

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.

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.

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.

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.

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.

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.

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., 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.

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.

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

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.

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.

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

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.

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.

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.

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.

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

Heiligmann, M., Stix, J., Williams-Jones, G., Sherwood Lollar, B. & Garzón V., G. (1996) Distal degassing of radon and carbon dioxide on Galeras volcano, Colombia. J. Volcanol. Geotherm. Res., 77, 267-284.