* invited
*Johnson, J. H., J. Eyles, B. Shiro, R. Herd, B. McLeod (2019) The STAK Project: Shear wave splitting Tomography At Kilauea. Departmental Seminar, University of Exeter, Falmouth, 15 March.
*Johnson, J. H., J. Eyles, B. Shiro, R. Herd, B. McLeod (2019) The STAK Project: Shear wave splitting Tomography At Kilauea. Distinguished Lecturer, King Abdullah University for Science and Technology, Saudi Arabia, 20 February.
Johnson, J. H., J. Eyles, B. Shiro, R. Herd, B. McLeod (2019) The STAK Project: Shear wave splitting Tomography At Kilauea. Poster presented at VMSG Annual Meeting, St Andrews, 7-10 January
Johnson, J. H., J. Eyles, B. Shiro, R. Herd, B. McLeod (2018) The STAK Project: Shear wave splitting Tomography At Kilauea. Abstract V43J-0293 presented at AGU Fall Meeting, Washington DC, USA, 10-14 December.
*Johnson, J. H., J. Eyles, B. Shiro, R. Herd, B. McLeod (2018) The STAK Project: Shear wave splitting Tomography At Kilauea. Departmental Seminar, University of East Anglia, Norwich, 27 November.
*Johnson, J. H., J. Eyles, B. Shiro, R. Herd, B. McLeod (2018) The STAK Project: Shear wave splitting Tomography At Kilauea. New Advances in Geophysics: The Future of Passive Seismic Acquisition. BGA, Royal Society of Edinburgh, 12-13 November.
*Johnson, J. H., (2017) Gravimetry in Volcanology. Rank Prize Fund Symposium on Quantum enhanced Gravimeters, Lake District, UK, 17-20 July.
Bacon, C., R. White, J. H. Johnson, and N. Rawlinson (2018) Seismic anisotropy in the Icelandic rift zone. Abstract EGU2018-13641 presented at EGU General Assembly, Vienna, Austria, 8-13 April.
Johnson, J. H., M. Savage, D. Duckett (2017) Changes in scattered energy associated with eruptions at Mt. Ruapehu detected using repeated earthquakes. IAVCEI Scientific Assembly, Portland, Oregon, USA, 14-18 August.
*Johnson, J. H., M. P. Poland, K. R. Anderson, and J. Biggs (2016) Topographic controls on deformation due to a shallow magma reservoir. Departmental seminar, University of Leeds, UK, 17 November.
Johnson, J. H., J. Smellie (2016) Geophysical Hazard of the South Sandwich Islands. UK Antarctic Science Conference, University of East Anglia, 5-7 July.
*Johnson, J. H., M. P. Poland, K. R. Anderson, and J. Biggs (2016) Topographic controls on deformation due to a shallow magma reservoir. Volcano Day, University of Cambridge, 26 May.
Johnson, J. H. (2015) Seismic anisotropy and its potential as a monitoring tool at active volcanoes. Volcano Seismology Working Group of the European Seismological Commission Annual Workshop. Quito, Ecuador, 9-17 November.
Johnson, J. H., P. Palacios, M. Kendall and H. Mader (2015) Heterogeneous seismic anisotropy masquerading as temporal changes: Shear wave splitting at Tungurahua Volcano, Ecuador. Abstract VS01-3917 presented at IUGG General Assembly, Prague, Czech Republic, 22 June-2 July.
*Johnson, J. H. (2015) Geomechanical modelling of volcanic processes. Invited presentation at The geophysical response of the Earth to fluid migration: oil and magma, Royal Astronomical Society, London, 8 May.
Johnson, J. H., M. P. Poland, K. R. Anderson, and J. Biggs (2015) Topographic controls on deformation due to a shallow magma reservoir. Abstract GMPV5.3-8843 presented at EGU General Assembly, Vienna, Austria, 12-17 April.
Johnson, J. H., R. White, D. Roman, and T. Greenfield (2015) Layered seismic anisotropy at Icelandic volcanoes: implications for crustal growth and consequences for shear wave splitting monitoring. Abstract SM4.4/GMPV6.5-8960 presented at EGU General Assembly, Vienna, Austria, 12-17 April.
*Johnson, J. H. (2015) Seismic anisotropy and its potential as a stress monitoring tool at active volcanoes. Departmental Seminar at the University of East Anglia, UK, 10 March.
Johnson, J. H., P. Palacios, M. Kendall and H. Mader (2014) Determining the Mechanism of Seismic Anisotropy at Volcanoes: Focus on Tungurahua Volcano, Ecuador. Abstract S21F-08 presented at AGU Fall Meeting, San Fran., USA, 15-19 December.
Johnson, J. H. (2014) Seismic signature of deflation-inflation events at Kilauea Volcano, Hawai`i, Volcano Seismology Working Group of the European Seismological Commission Annual Workshop. Lough Rynn, Co Leitrim, Ireland, 17-21 November.
*Johnson, J. H. (2014) Volcanoes, melt, and seismic anisotropy. Invited presentation at Volcanology Day, Oxford, UK, 10 September.
*Johnson, J. H. (2014) Volcanoes, melt, and seismic anisotropy. Invited presentation at 2014 Day of Melt in the Crust, Bristol, UK, 3 March.
*Johnson, J. H. (2014) Constraining temporal variations of seismic anisotropy at volcanoes. Invited presentation at BUMPS sponsors meeting, Bristol, UK, 22-23 January.
*Johnson, J. H., D. A. Swanson, D. Roman, M. P. Poland and W. Thelen (2013) Seismic anisotropy investigations at Kīlauea Volcano: implications for volcano monitoring. Departmental seminar, University of Cambridge, UK, 20 November.
Okubo, P., J. H. Johnson, E. S. Felts and N. Flores (2013) Updated tomographic imaging at Kīlauea Volcano, Hawai`i. Abstract V41A-2767 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 9-13 Dec.
Unglert, K., M. Jellinek, W. Thelen, P. Okubo, J. H. Johnson and M. P. Poland (2013) Volcanic tremor on Kīlauea, Hawai`i – Is something new in the plumbing system? Abstract V41B-2783 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 9-13 Dec.
*Johnson, J. H., D. A. Swanson, D. Roman, M. P. Poland, W. Thelen (2013) Seismic anisotropy investigations at Kilauea Volcano: implications for volcano monitoring. Departmental seminar, University of Cambridge, UK, 20 November.
Johnson, J. H., K. R. Anderson, M. P. Poland and A. Miklius (2013) Investigating the source mechanisms of deflation-inflation events at Kilauea Volcano, Hawai`i. presentation at 2013 IAVCEI Scientific Assembly, Kagoshima, Japan, 20–24 July.
*Johnson, J. H., M. P. Poland (2013) The interplay of crustal stress and structure at Kīlauea Volcano inferred from seismic anisotropy. Invited presentation at 2013 IAVCEI Scientific Assembly, Kagoshima, Japan, 20–24 July.
Johnson, J. H., K. R. Anderson, M. P. Poland, and A. Miklius (2012) Investigating the source mechanisms of deflation-inflation events at Kilauea Volcano, Hawai`i. Abstract VV32A-04 presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3–7 Dec.
Johnson, J. H., M. P. Poland (2012) A Background of Seismic Anisotropy at Kilauea Volcano and Changes Associated with the Summit Eruptive Vent. Presented at AGU Chapman Conference onHawaiian Volcanoes: From Source to Surface, Waikoloa, Hawai'i, 19–24 August.
Johnson, J. H., M. Poland and P. Okubo (2012) Temporal variations in shear-wave splitting associated with Kilauea’s summit eruptive vent. Abstract 12-643 presented at 2012 SSA Annual Meeting in San Diego, Calif., 16-20 April.
Johnson, J. H., M. K. Savage, B. S. Keats, J. Townend (2011) Investigating Temporal Variations in Seismic Anisotropy Associated with Volcanic Eruptions at Mt Ruapehu, New Zealand. Abstract V53C-2631 presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.
Holt, R. A., J. H. Johnson, E. M. Syracuse, M. K. Savage, C. H. Thurber, M. Henderson, K. Allan, K. Unglert (2011) Shear wave splitting and evolution of seismicity on the Canterbury plains: The nature of the Darfield fault. Abstract S31C-2254 presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec.
Johnson, J. H., M. K. Savage, J. Townend, B. Keats (2011) Discriminating Between Spatial and Temporal Variations in Anisotropy at Mount Ruapehu Volcano, New Zealand. Abstract 3220 presented at 2011 IUGG Meeting, Melbourne, Australia, 28 June - 7 July
Johnson, J. H., M. Savage, J. Townend and B. Keats (2010) Discriminating Between Spatial and Temporal Variations in Anisotropy at Mount Ruapehu Volcano, New Zealand. Abstract S21D-03 presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.
Kufner, S., J. H. Johnson and M. Savage (2010) Temporal variation of seismic anisotropy at Okmok Volcano (Alaska) from regional earthquake sources. Abstract S13B-1987 Poster presented at 2010 Fall Meeting, AGU, San Francisco, Calif., 13-17 Dec.
Johnson, J. H., M. K. Savage, and J. Townend (2010) Distinguishing between spatial and temporal variations in anisotropy at Mt. Ruapehu volcano. GeoNZ Conference, Auckland
Kufner, S. K., M. K. Savage, and J. H. Johnson (2010) Temporal variation of seismic anisotropy at Okmok Volcano (Alaska). GeoNZ Conference, Auckland
Savage, M., C. Boese, Y. Behr, K. Jacobs, S. Karalliyada, K. Unglert, J. H. Johnson, S. Kufner, B. Keats, E. Smith, J. Townend (2010) Search for time-varying seismic properties after the 2010 M7.1 Darfield Earthquake. GeoNZ Conference, Auckland
Johnson J. H., M.K. Savage, and J. Townend. (2009), A High-Resolution Benchmark of Spatial Variations in Seismic Anisotropy Around Mt. Ruapehu Volcano, New Zealand. Eos Trans. AGU, 90(52), Fall Meet. Suppl., Abstract V31G-03, San Francisco.
Johnson J. H., M.K. Savage, and J. Townend. (2009) A High-Resolution Benchmark of Spatial Variations in Seismic Anisotropy Around Mt. Ruapehu Volcano. NZ Geoscience conference. Oamaru.
*Johnson J. H., M.K. Savage, Syuhada, K. Unglert, K. Jacobs, J. Townend, E. Smith & N. Fournier. (2009) Investigating Magma Movement in the TVZ: Volcano Geophysics at VUW 2009. Tongariro Day: A Workshop on volcano research in Tongariro National Park. Turangi
Johnson J. H., Prejean S., Savage M. and Searcy C. (2008) Two Part Analysis of the Seismicity before and during the 2008 Eruption at Okmok Volcano, Alaska. Eos Trans. AGU, 89(53), Fall Meet. Suppl., Abstract A53B-0258, San Francisco.
Johnson J. H., Prejean S. and Savage M. (2008) Shear Wave Slitting Analysis of the Seismicity Before and During the 2008 Eruption at Okmok Volcano, Alaska. NZ Geoscience conference, Wellington.
Johnson J. H.., Wessel A., Savage M. and Townend J. (2007) Stress monitoring at an Active Volcano with Seismic Anisotropy- A Possible Eruption Prediction Tool at Mount Ruapehu. NZ Geoscience conference, Tauranga.
Neuberg, J., Smith P.J., Poxon A., Key J. and Johnson J. H. (2007) Towards a quantitative, seismic magma flow meter. IUGG XXIV General Assembly, Perugia, Italy.
Casey M, R Butler, G Lloyd, J. H. Johnson. (2006) Extrusion and vorticity in Tibet, Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract T53C-1614, San Francisco.