Research / Teaching

2023

Anderson, J. F., Johnson, J. B., Mikesell, T. D., & Liberty, L. M. (2023). Remotely imaging seismic ground shaking via large-N infrasound beamforming. Communications Earth & Environment, 4(1), 399. https://doi.org/10.1038/s43247-023-01058-z

Hoppinen, Z., Johnson, J. B., Capelli, A., Anderson, J. H., & Marshall, H.-P. (2023). Snow Attenuation of Infrasound Signals and Wind Noise. Seismological Research Letters, 94(6), 2801–2812. https://doi.org/10.1785/0220230048

Iozzia, A., Watson, L.M., Cantarero, M., De Beni, E., Di Grazia, G., Ganci, G., Johnson, J.B., Privitera, E., Proietti, C., Sciotto, M., Cannata, A. The Influence of Volcano Topographic Changes on Infrasound Amplitude: Lava Vountains at Mt. Etna in 2021. Bulletin of Volcanology.  https://doi.org/10.1007/s00445-023-01672-x

Johnson, J. B., Boyer, T., Watson, L. M., & Anderson, J. F. (2023). Volcano opto-acoustics: mapping the infrasound wavefield at Yasur Volcano (Vanuatu). Geophysical Research Letters. https://doi.org/10.1029/2022GL102029

Johnson, J. B., Roca, A., Pineda, A., Merida, R., Escobar-Wolf, R., Anderson, J. F., et al. (2023). Infrasound Detection of Approaching Lahars. Nature Scientific Reports. https://doi.org/10.1038/s41598-023-32109-2

Johnson, J. B., Havens, S., Marshall, H. P., Mock, J., Walsh, O., Anderson, J. F., et al. (2023). Heard but not seen: Automated Detection and Quantification of Snow Avalanches Using Infrasound. Proceeding of International Snow Science Workshop, Bend,OR, USA, 9-13 October 2023.

Marchetti, E., & Johnson, J. B. (2023). Infrasound array analysis of rapid mass movements in mountain regions. (C. Schmelzbach, Ed.), Advances in Geophysics: Geohazards (Advances i, Vol. 64). Zurich: Academic Press.

Mock, J.C., Johnson, J.B., Pineda, A., Bejar, G., Roca, A. (2023) UAV-Based Quantification of Dynamic Lahar Channel Morphology at Volcán de Fuego, Guatemala. Remote Sensing. https://doi.org/10.3390/rs15153713

2022

*Rosenblatt, B. B., Johnson, J. B., Anderson, J. F., Kim, K., & Gauvain, S. J. (2022). Controls on the frequency content of near-source infrasound at open-vent volcanoes: a case study from Volcán Villarrica, Chile. Bulletin of Volcanology, 84(12), 103. https://doi.org/10.1007/s00445-022-01607-y

Sciotto, M., Watson, L. M., Cannata, A., Cantarero, M., De Beni, E., & Johnson, J. B. (2022). Infrasonic gliding reflects a rising magma column at Mount Etna (Italy). Scientific Reports, 12(1), 16954. https://doi.org/10.1038/s41598-022-20258-9

Watson, L. M., Iezzi, A. M., Toney, L., Maher, S. P., Fee, D., McKee, K., et al. (2022). Volcano infrasound: progress and future directions. Bulletin of Volcanology, 84(5), 44. https://doi.org/10.1007/s00445-022-01544-w

2021

Apel, T., & Johnson, J. B. (2021). Portable Realtime Volcano Infrasound Auditory Display Devices. In Proceedings of the 26th International Conference on Auditory Display (ICAD 2021) (pp. 131–134). icad.org: International Community for Auditory Display. https://doi.org/10.21785/icad2021.012

*Bosa, A., Johnson, J., De Angelis, S., Lyons, J., Roca, A., Anderson, J., & Pineda, A. (2021). Tracking secondary lahar flow paths and characterizing pulses and surges using infrasound array networks at Volcán de Fuego, Guatemala. Volcanica, 4(2), 239–256. https://doi.org/10.30909/vol.04.02.239256

Civico, R., Ricci, T., Scarlato, P., Andronico, D., Cantarero, M., Carr, B. B., et al. (2021). Unoccupied aircraft systems (Uass) reveal the morphological changes at stromboli volcano (italy) before, between, and after the 3 july and 28 august 2019 paroxysmal eruptions. Remote Sensing, 13(15). https://doi.org/10.3390/rs13152870

Johnson, J. B., Anderson, J. F., Marshall, H. P., Havens, S., & Watson, L. M. (2021). Snow Avalanche Detection and Source Constraints Made Using a Networked Array of Infrasound Sensors. Journal of Geophysical Research: Earth Surface, 126(3), 1–23. https://doi.org/10.1029/2020JF005741

Johnson, J. B., Marshall, H. P., & Anderson, J. F. (2021). Infrasound avalanche monitoring: Enhanced monitoring in Little Cottonwood Canyon, Utah. Retrieved from https://rosap.ntl.bts.gov/view/dot/60194

*Ortiz, H. D., Matoza, R. S., Johnson, J. B., Hernandez, S., Anzieta, J. C., & Ruiz, M. C. (2021). Autocorrelation Infrasound Interferometry. Journal of Geophysical Research: Solid Earth, 126(4), 1–14. https://doi.org/10.1029/2020JB020513

Watson, L. M., Carpenter, B., Thompson, K., & Johnson, J. B. (2022). Using local infrasound arrays to detect plunging snow avalanches along the Milford Road, New Zealand (Aotearoa). Natural Hazards, 111(1), 949–972. https://doi.org/10.1007/s11069-021-05086-w

2020

Haney, M. M., Van Eaton, A. R., Lyons, J. J., Kramer, R. L., Fee, D., Iezzi, A. M., et al. (2020). Characteristics of thunder and electromagnetic pulses from volcanic lightning at Bogoslof volcano, Alaska. Bulletin of Volcanology, 82(2). https://doi.org/10.1007/s00445-019-1349-y

Johnson, J. B., Mikesell, T. D., Anderson, J. F., & Liberty, L. M. (2020). Mapping the Sources of Proximal Earthquake Infrasound. Geophysical Research Letters, 47(23), 1–9. https://doi.org/10.1029/2020GL091421

Watson, L. M., Johnson, J. B., Sciotto, M., & Cannata, A. (2020). Changes in Crater Geometry Revealed by Inversion of Harmonic Infrasound Observations: 24 December 2018 Eruption of Mount Etna, Italy. Geophysical Research Letters, 47(19). https://doi.org/10.1029/2020GL088077

*Witsil, A. J. C., & Johnson, J. B. (2020). Analyzing continuous infrasound from Stromboli volcano, Italy using unsupervised machine learning. Computers and Geosciences, 140(January), 104494. https://doi.org/10.1016/j.cageo.2020.104494

*Witsil, A. J. C., & Johnson, J. B. (2020). Volcano video data characterized and classified using computer vision and machine learning algorithms. Geoscience Frontiers, 11(5), 1789–1803. https://doi.org/10.1016/j.gsf.2020.01.016

Zorn, E. U., Walter, T. R., Johnson, J. B., & Mania, R. (2020). UAS-based tracking of the Santiaguito Lava Dome, Guatemala. Scientific Reports, 10(1), 8644. https://doi.org/10.1038/s41598-020-65386-2

2019

Johnson, J. B., & Watson, L. M. (2019). Monitoring Volcanic Craters with Infrasound “Music .” Eos, 100(March 2015). https://doi.org/10.1029/2019EO123979

Johnson, J. B. (2019). Local Volcano Infrasound Monitoring. In A. Le Pichon (Ed.), Infrasonic monitoring for atmospheric studies, 2nd ed. (2nd ed., p. ch. 33). Berlin.

Watson, L. M., Dunham, E. M., & Johnson, J. B. (2019). Simulation and inversion of harmonic infrasound from open-vent volcanoes using an efficient quasi-1D crater model. Journal of Volcanology and Geothermal Research, 380, 64–79. https://doi.org/10.1016/j.jvolgeores.2019.05.007

2018

*Ortiz, H. D., Johnson, J. B., Ramón, P. G., & Ruiz, M. C. (2018). Using infrasound waves to monitor tropospheric weather and crater morphology changes at Volcán Tungurahua, Ecuador. Journal of Volcanology and Geothermal Research, 349, 205–216. https://doi.org/10.1016/j.jvolgeores.2017.11.001

Johnson, J. B., Marshall, H. P., Loo, S. M., Nalli, B., Saurer, M., Havens, S., … Anderson, J. F. (2018). Detection and tracking of snow avalanches in Little Cottonwood Canyon, Utah using multiple small-aperture infrasound arrays. Proceeding of International Snow Science Workshop, Innsbruck, Austria, 7–12 October 2018.

*Anderson, J. F., Johnson, J. B., Bowman, D. C., & Ronan, T. J. (2018). The Gem Infrasound Logger and Custom‐Built Instrumentation. Seismological Research Letters, 89(1), 153–164. https://doi.org/10.1785/0220170067

Romero, J. E., Vera, F., Polacci, M., Morgavi, D., Arzilli, F., Alam, M. A., … Keller, W. (2018). Tephra From the 3 March 2015 Sustained Column Related to Explosive Lava Fountain Activity at Volcán Villarrica (Chile). Frontiers in Earth Science, 6. https://doi.org/10.3389/feart.2018.00098Johnson, J. B. (2019). Local Volcano Infrasound Monitoring. In A. Le Pichon (Ed.), Infrasonic monitoring for atmospheric studies, 2nd ed. (2nd ed., p. ch. 33). Berlin.

*Witsil, A. J. C., & Johnson, J. B. (2018). Infrasound explosion and coda signal investigated with joint analysis of video at Mount Erebus, Antarctica. Journal of Volcanology and Geothermal Research, 357, 306–320. https://doi.org/10.1016/j.jvolgeores.2018.05.002

*Anderson, J. F., Johnson, J. B., Steele, A. L., Ruiz, M. C., & Brand, B. D. (2018). Diverse Eruptive Activity Revealed by Acoustic and Electromagnetic Observations of the 14 July 2013 Intense Vulcanian Eruption of Tungurahua Volcano, Ecuador. Geophysical Research Letters, 45(7), 2976–2985. https://doi.org/10.1002/2017GL076419

Johnson, J. B., Watson, L. M., Palma, J. L., Dunham, E. M., & Anderson, J. F. (2018). Forecasting the Eruption of an Open-Vent Volcano Using Resonant Infrasound Tones. Geophysical Research Letters. https://doi.org/10.1002/2017GL076506

Barrière, J., D’Oreye, N., Oth, A., Geirsson, H., Mashagiro, N., Johnson, J. B., … Kervyn, F. (2018). Single-Station Seismo-Acoustic Monitoring of Nyiragongo’s Lava Lake Activity (D.R. Congo). Frontiers in Earth Science, 6. https://doi.org/10.3389/feart.2018.00082

Johnson, J. B., Ruiz, M. C., Ortiz, H. D., Watson, L. M., Viracucha, G., Ramon, P., & Almeida, M. (2018). Infrasound Tornillos Produced by Volcán Cotopaxi’s Deep Crater. Geophysical Research Letters, 1–9. https://doi.org/10.1029/2018GL077766

2017

Gunawan, H., Caudron, C., Pallister, J., Primulyana, S., Christenson, B., Mccausland, W., … Hendrasto, M. (2017). New insights into Kawah Ijen’s volcanic system from the wet volcano workshop experiment. Geological Society, London, Special Publications, 437(1), 35–56. https://doi.org/10.1144/SP437.7

*Ronan, T. J., Lees, J. M., Mikesell, T. D., Anderson, J. F., & Johnson, J. B. (2017). Acoustic and Seismic Fields of Hydraulic Jumps at Varying Froude Numbers. Geophysical Research Letters, 44(19), 9734–9741. https://doi.org/10.1002/2017GL074511

Manga, M., Carn, S., Cashman, K., Clarke, A., C, C., Cooper, K., … Segall, P. (2017). Volcanic Eruptions and Their Repose, Unrest, Precursors, and Timing. Washington, D.C.: National Academies Press. https://doi.org/10.17226/24650

2016

Johnson, J., Andrews, B., & Escobar-Wolf, R. (2016). Visiting the Volcano. Eos, 97. https://doi.org/10.1029/2016EO051467

2015

Lavallée, Y., Dingwell, D. B., Johnson, J. B., Cimarelli, C., Hornby, A. J., Kendrick, J. E., … Chigna, G. (2015). Thermal vesiculation during volcanic eruptions. Nature, In Press(7583), 1–5. doi:10.1038/nature16153

Johnson, J. B., & Ronan, T. J. (2015). Infrasound from Volcanic Rockfalls. Journal of Geophysical Research: Solid Earth, n/a–n/a. doi:10.1002/2015JB012436

Johnson, J. B., & Palma, J. L. (2015). Lahar infrasound associated with Volcán Villarrica’s 3 March 2015 eruption. Geophysical Research Letters, 42(15), 6324–6331. doi:10.1002/2015GL065024

2014

Johnson, J. B., Lyons, J. J., Andrews, B. J., & Lees, J. M. (2014). Explosive dome eruptions modulated by periodic gas-driven inflation. Geophys. Res. Lett., 41(19), 6689–6697. doi:10.1002/2014GL061310

Johnson, J. B., & Miller, A. J. C. (2014). Application of the Monopole Source to Quantify Explosive Flux during Vulcanian Explosions at Sakurajima Volcano (Japan). Seismological Research Letters, 85(6), 1163–1176. doi:10.1785/0220140058

Havens, S., Marshall, H.-P., Johnson, J. B., & Nicholson, B. (2014). Calculating the velocity of a fast moving snow avalanche using an infrasound array. Geophys. Res. Lett., 41(17), 6191–6198. doi:10.1002/2014GL061254

Dabrowa, A. L., Green, D. N., Johnson, J. B., Phillips, J. C., & Rust, A. C. (2014). Comparing near-regional and local measurements of infrasound from Mount Erebus, Antarctica: Implications for monitoring. Journal of Volcanology and Geothermal Research, 288, 46–61. doi:10.1016/j.jvolgeores.2014.10.001

2013

Gerst, A., Hort, M., Aster, R. C., Johnson, J. B., & Kyle, P. R. (2013). The first second of volcanic eruptions from the Erebus volcano lava lake, Antarctica - Energies, pressures, seismology, and infrasound. Journal of Geophysical Research: Solid Earth, 118(7), 3318–3340. doi:10.1002/jgrb.50234

Johnson, J. B., Anderson, J. F., Anthony, R. E., & Sciotto, M. (2013). Detecting geyser activity with infrasound. J. Volc. Geotherm. Res., 256, 105–117. doi:10.1016/j.volgeores.2013.02.016

2012

Johnson, J. B., Anderson, J., Marcillo, O., & Arrowsmith, S. (2012). Probing local wind and temperature structure using infrasound from Volcan Villarrica (Chile). J. Geophys. Res., 117(D17). doi:10.1029/2012JD017694

*Marcillo, O., Johnson, J. B., & Hart, D. (2012). Implementation, characterization, and evaluation of an inexpensive low-power low-noise infrasound sensor based on a micromachined differential pressure transducer and a mechanical filter. Journal of Atmospheric and Oceanic Technology, 29(9), 1275–1284. doi:10.1175/JTECH-D-11-00101.1

*Anderson, J., Lees, J. M., Waite, G. P., & Johnson, J. B. (2012). Source and propagation effects on near-field co-eruptive ground motion at Santiaguito Volcano, Guatemala. Bull. Seismol. Soc. Am., 102(2), 696–706. doi:10.1785/0120110106

Scharff, L., Zieman, F., Hort, M., Gerst, A., & Johnson, J. B. (2012). A detailed view into the eruption clouds of Santiaguito Volcano, Guatemala, using Doppler radar. J. Geophys. Res., 117(B4), B04201. doi:10.1029/2011JB008542

2011

Johnson, J. B., & Ripepe, M. (2011). Volcano infrasound: A review. Journal of Volcanology and Geothermal Research, 206(3-4), 61–69. doi:10.1016/j.jvolgeores.2011.06.006

Johnson, J. B., Arechiga, R. O., Thomas, R. J., Edens, H. E., Anderson, J., & Johnson, R. (2011). Imaging thunder. Geophys. Res. Lett., 38(L19807). doi:10.1029/2011GL049162

Johnson, J. B., Lees, J., & Varley, N. (2011a). Characterizing complex eruptive activity at Santiaguito, Guatemala using infrasound semblance in networked arrays. Journal of Volcanology and Geothermal Research, 199(1-2), 1–14. doi:10.1016/j.jvolgeores.2010.08.005

Johnson, J. B., Lees, J., & Varley, N. (2011b). Characterizing complex eruptive activity at Santiaguito, Guatemala using infrasound semblance in networked arrays. Journal of Volcanology and Geothermal Research, 199(1-2), 1–14. doi:10.1016/j.jvolgeores.2010.08.005

Goto, A., & Johnson, J. B. (2011). Monotonic infrasound and Helmholtz resonance at Volcan Villarrica (Chile). Geophys. Res. Lett., 38(L06301). doi:10.1029/2011GL046858

Arechiga, R., Johnson, J. B., Edens, H., Thomas, R. J., & Rison, W. (2011). Acoustic localization of triggered lightning. J. Geophys. Res., 116(D09103). doi:10.1029/2010JD015248

2010

*Marcillo, O., & Johnson, J. B. (2010). Tracking near-surface atmospheric conditions using an infrasound network. J. Acoust. Soc. Am. Lett., 128(1), EL14–EL19. doi:10.1121/1.3442725

*Sanderson, R. W., Johnson, J. B., & Lees, J. M. (2010). Ultra-long period seismic signals and cyclic deflation coincident with eruptions at Santiaguito volcano, Guatemala. Journal of Volcanology and Geothermal Research, 198(1-2), 35–44. doi:10.1016/j.jvolgeores.2010.08.007

Arrowsmith, S. J., Johnson, J. B., Drob, D. P., & Hedlin, M. A. H. (2010). The seismoacoustic wavefield: A new paradigm in studying geophysical phenomena. Reviews of Geophysics, 48(4), 1–23. doi:10.1029/2010RG000335

Johnson, J. B., & Lees, J. M. (2010). Sound produced by the rapidly inflating Santiaguito lava dome, Guatemala. Geophys. Res. Lett., 37(L22305). doi:10.1029/2010GL045217

2009

Johnson, J. B., & Ruiz, M. C. (2009). Field Geophyscis Class at Volcan Tungurahua (Ecuador). EOS Trans. AGU, 90(47). doi:10.1029/2009EO470002

Johnson, J. B., Sanderson, R., Lyons, J., Escobar-Wolf, R., Waite, G. P., & Lees, J. M. (2009). Dissection of a composite volcanic earthquake at Santiaguito, Guatemala. Geophys. Res. Lett., 36(L16308). doi:10.1029/2009GL039370

2008

Johnson, J., Samaniego, P., Hall, M. L. (Pete), & Le Pennec, J.-L. (2008). Foreword. Journal of Volcanology and Geothermal Research, 176(1), v. doi:10.1016/j.jvolgeores.2008.08.005

Jones, K. R., Johnson, J. B., Aster, R., Kyle, P. R., & McIntosh, W. C. (2008). Infrasonic tracking of large bubble bursts and ash venting at Erebus Volcano, Antarctica. Journal of Volcanology and Geothermal Research, 177(3), 661–672. doi:10.1016/j.jvolgeores.2008.02.001

Lees, J. M., Johnson, J. B., Ruiz, M., Troncoso, L., & Welsh, M. (2008). Reventador Volcano 2005: Eruptive activity inferred from seismo-acoustic observation. Journal of Volcanology and Geothermal Research, 176(1), 179–190. doi:10.1016/j.jvolgeores.2007.10.006

Johnson, J. B., Lees, J. M., Gerst, A., Sahagian, D., & Varley, N. (2008). Long-period earthquakes and co-eruptive dome inflation seen with particle image velocimetry. Nature, 456(7220), 377–381. doi:10.1038/nature07429

Johnson, J., Aster, R., Jones, K. R., Kyle, P., & McIntosh, B. (2008). Acoustic source characterization of impulsive Strombolian eruptions from the Mount Erebus lava lake. Journal of Volcanology and Geothermal Research, 177(3), 673–686. doi:10.1016/j.jvolgeores.2008.06.028

Hall, M., Samaniego, P., Le Pennec, J. L., & Johnson, J. B. (2008). Ecuadorian Andes volcanism: A review of Late Pliocene to present activity. J. Volc. Geotherm. Res., 176, 1–6. doi:doi:10.1016/j.jvolgeores.2008.06.012.

2007

Johnson, J. B., & Malone, S. D. (2007). Ground-coupled acoustic airwaves from Mount St. Helens provide constraints on the May 18, 1980 eruption. Earth and Planetary Science Letters, 258(1-2), 16–31. doi:10.1016/j.epsl.2007.03.001

Johnson, J. B. (2007). On the relation between infrasound, seismicity, and small pyroclastic explosions at Karymsky Volcano. Journal of Geophysical Research-Solid Earth, 112(B8). doi:10.1029/2006jb004654

2006

Johnson, J. B., Lees, J. M., & Yepes, H. (2006). Volcanic eruptions, lightning, and a waterfall: Differentiating the menagerie of infrasound in the Ecuadorian jungle. Geophys. Res. Lett., 33(L06308), doi: 10.1029/2005GL025515.

Ruiz, M., Lees, J. M., & Johnson, J. B. (2006). Source constraints of Tungurahua volcano explosion events. Bulletin of Volcanology, 68(5), 480–490. doi:10.1007/s00445-005-0023-8

DAVIES, A. G., CHIEN, S., WRIGHT, R., MIKLIUS, A., KYLE, P. R., WELSH, M., … SHERWOOD, R. (2006). Sensor Web Enables Rapid\rResponse to Volcanic Activity. Eos, 87(1), 1–5.

Werner-Allen, G., Lorincz, K., Johnson, J. B., Lees, J. M., & Welsh, M. (2006). Fidelity and yield in a volcano monitoring sensor network. In OSDI’06 (Vol. Proceeding).

Werner-Allen, G., Lorincz, K., Ruiz, M. C., Marcillo, O., Johnson, J. B., Lees, J. M., & Welsh, M. (2006). Deploying a wireless sensor network on an active volcano. IEEE Internet Computing, 10(22), 18–25.

2005

Johnson, J. B., Ruiz, M. C., Lees, J. M., & Ramon, P. (2005). Poor scaling between elastic energy release and eruption intensity at Tungurahua Volcano, Ecuador. Geophys. Res. Lett., 32, L15304. doi:10.1029/2005GL022847

Johnson, J. B. (2005). Source location variability and volcanic vent mapping with a small-aperture infrasound array at Stromboli Volcano, Italy. Bull. Volcan., 67, 1–14.

Johnson, J. B., Harris, A. J. L., & Hoblitt, R. P. (2005). Thermal observations of gas pistoning at Kilauea Volcano. Journal of Geophysical Research: Solid Earth, 110(11), 1–12. doi:10.1029/2005JB003944

Johnson, J. B., & Aster, R. C. (2005). Relative partitioning of acoustic and seismic energy during Strombolian eruptions. Journal of Volcanology and Geothermal Research, 148(3-4), 334–354. doi:10.1016/j.jvolgeores.2005.05.002

2004

Johnson, J. B., Harris, A. J. L., Sahetapy-Engel, S. T. M., Wolf, R., & Rose, W. I. (2004). Explosion dynamics of pyroclastic eruptions at Santiaguito Volcano. Geophysical Research Letters, 31(6). doi:10.1029/2003gl019079

Johnson, J. B., Aster, R. C., & Kyle, P. R. (2004). Volcanic eruptions observed with infrasound. Geophys. Res. Lett., 31(L14604), doi:10.1029/2004GL020020.

Aster, R., MacIntosh, W., Kyle, P., Esser, R., Bartel, B., Dunbar, N., … Ruiz, M. (2004). Real-time data received from Mount Erebus Volcano, Antarctica. Eos, Transactions American Geophysical Union, 85(10), 97. doi:10.1029/2004EO100001

2003

Johnson, J. B., Aster, R. C., Ruiz, M. C., Malone, S. D., McChesney, P. J., Lees, J. M., & Kyle, P. R. (2003). Interpretation and utility of infrasonic records from erupting volcanoes. J. Volc. Geotherm. Res., 121(1-2), 15–63.

Harris, A., Johnson, J., Horton, K., Garbeil, H., Ramm, H., Pilger, E., … Marchetti, E. (2003). Ground-based infrared monitoring provides new tool for remote tracking of volcanic activity. Eos, Transactions American Geophysical Union, 84(40), 409. doi:10.1029/2003EO400001

Aster, R. C., Mah, S., Kyle, P. R., McIntosh, W., Dunbar, N., & Johnson, J. B. (2003). Very long period oscillations of Mount Erebus Volcano. J. Geophys. Res., 108(B11)(2522). doi:10.1029/2002JB002101

2000

Johnson, J. B., & Lees, J. M. (2000). Plugs and chugs - seismic and acoustic observations of degassing explosions at Karymsky, Russia and Sangay, Ecuador. J. Volc. Geotherm. Res., 101(1-2), 67–82.

1998

Johnson, J. B., Lees, J. M., & Gordeev, E. I. (1998). Degassing explosions at Karymsky Volcano, Kamchatka. Geophys. Res. Lett., 25(21), 3999–4042.

• GEOS220 Physics of the Earth - tinyurl.com/geos220f2021 (taught every fall)

• GEOG360 Volcanoes and Society - tinyurl.com/geos370 (taught fall even years; first offering in 2024!)

• GEOS482 Field Methods: Geodynamics - tinyurl.com/geos482f2021  (recent taught fall 2021)

• GEOS420/520 Digital Signal Processing Applications in Geoscience - tinyurl.com/dsps2021 (taught every spring)

• GEOS497/597 Drone UAV SFM - tinyurl.com/sfm-uav (taught every semester)

• GEOS397 Yellowstone Field Trip (last taught fall 2019)

• GEOPH660 Volcano Geophysics (last taught spring 2020)