Arthur Jolly
Research geophysicist with interests in seismology and aero-acoustics of volcanoes. My research is focused on the indicators of unrest at volcanoes before an eruption has occurred and consequent hazards during and after eruptive activity.
I began my academic career in volcanology as seismic analyst in Alaska and then focused on research on the seismicity of the Katmai group volcanos, the Soufriere Hills volcano in Montserrat and volcanoes in the south Pacific including Ruapehu, Ngauruhoe, Whakaari (White Island) in New Zealand and Yasur, and Ambae volcanoes in Vanuatu. In addition to work as a monitoring volcano seismologist, I have undertaken research to identify unrest and eruption for phreatic and magmatic systems. I am also interested in eruption consequences and I have worked to improve seismic and acoustic characterization of eruptions and mass flow events at volcanoes.
I have worked as a volcano seismologist at the Alaska Volcano Observatory, Montserrat Volcano Observatory and for the New Zealand GeoNet project. I am currently a monitoring and research scientist at the Hawaiian Volcano Observatory.
I have worked as part of the monitoring team during eruption episodes including Redoubt, Alaska (1990), Spurr, Alaska (1991), Soufriere Hills, Montserrat (1999, 2001, 2003), Redoubt, New Zealand (2007), Te Maari (Tongariro) New Zealand (2012), Whakaari, New Zealand ( 2012-2013, 2016, 2019). I have also supported the Vanuatu Meteorology and Geohazards Department (VMGD) as part of their eruption responses to Mt. Gharat (Gaua) (2013), Ambae (2018-2019) and Ambrym (2018).
I have undertaken volcano seismology and volcano acoustic research for a wide range of eruption styles from hydrothermal/phreatic/strombolian/dome forming and collapse/vulcanian and effusive volcanic systems.
I have an interest in characterizing eruptions, understanding the energetics of post eruption events including pyroclastic density currents and lahar and the range of energetics for effusive and explosive eruptions. I am also interested in field experimental methods in volcanology that may support the development of improved eruption monitoring and hazards characterization/assessments.
I am part of the editorial teams for both the Journal of Volcanology and Geothermal Research and Earth, Planets and Space.
Education and Certifications
University of Alaska Fairbanks, Ph.D., Geophysics, 2000
University of Montana, MS, Geology, 1991
Central Washington University , BS, Geology, 1985
Science and Products
Dynamics and detection of pulsed tremor at Whakaari (White Island), Aotearoa New Zealand
Volcanic tremor is a crucial indicator for assessing the state and hazard potential of volcanic systems. At Whakaari (White Island volcano, Aotearoa New Zealand), a pulsed tremor signal emerged after a hydrothermal explosion in August 2012. The tremor accompanied the extrusion of a lava dome, before gradually disappearing prior to the onset of renewed hydrothermal activity in January 2013. We inte
Authors
B. Steinke, A.D. Jolly, T. Girona, C. Caudron, L.A. Bramwell, S.J. Cronin, F. Illsley-Kemp, E.C. Hughes
Time varying crustal anisotropy at Whakaari/White Island volcano
Whakaari/White Island has been the most active New Zealand volcano in the 21st century, producing small phreatic and phreatomagmatic eruptions, which are hard to predict. The most recent eruption occurred in 2019, tragically claiming the lives of 22 individuals and causing numerous injuries. We employed shear-wave splitting analyses to investigate variations in anisotropy during quiescence, unrest
Authors
D.M. Mengesha, M.K. Savage, A.D. Jolly, C.J. Ebinger
UAS-Based Observations of Infrasound Directionality at Stromboli Volcano, Italy
Infrasound (low frequency sound waves) can be used to monitor and characterize volcanic eruptions. However, infrasound sensors are usually placed on the ground, thus providing a limited sampling of the acoustic radiation pattern that can bias source size estimates. We present observations of explosive eruptions from a novel uncrewed aircraft system (UAS)-based infrasound sensor platform that was s
Authors
Alexandra M. Iezzi, Richard M. Buzard, David Fee, Robin S. Matoza, Julia E. Gestrich, A.D. Jolly, Markus Schmid, Valeria Cigala, Ulrich Kueppers, Caron E.J. Vossen, Corrado Cimarelli, Giorgio Lacanna, Maurizio Ripepe
Identification of seismo-volcanic regimes at Whakaari/White Island (New Zealand) via systematic tuning of an unsupervised classifier
We present an algorithm based on Self-Organizing Maps (SOM) and k-means clustering to recognize patterns in a continuous 12.5-year tremor time series recorded at Whakaari/White Island volcano, New Zealand (hereafter referred to as Whakaari). The approach is extendable to a variety of volcanic settings through systematic tuning of the classifier. Hyperparameters are evaluated by statistical means,
Authors
B. Steinke, A.D. Jolly, R. Carniel, D.E. Dempsey, S.J. Cronin
Analog field-scale acoustic study of volcanic eruption directivity using a tiltable liquid nitrogen-charged water cannon
Laterally directed explosive eruptions are responsible for multiple fatalities over the past decade and are an increasingly important volcanology problem. To understand the energy dynamics for these events, we collected field-scale explosion data from nine acoustic sensors surrounding a tiltable cannon as part of an exploratory experimental design. For each cannon discharge, the blast direction wa
Authors
A.D. Jolly, Benjamin Kennedy, Robin S. Matoza, Alexandra M. Iezzi, Bruce W. Christensen, Richard Johnson, Amilea Sork, David Fee
Special issue “Understanding phreatic eruptions - recent observations of Kusatsu-Shirane volcano and equivalents -”
No abstract available.
Authors
Yasuo Ogawa, Takeshi Ohba, Tobias Fischer, Mare Yamamoto, A.D. Jolly
Atmospheric waves and global seismoacoustic observations of the January 2022 Hunga eruption, Tonga
The 15 January 2022 climactic eruption of Hunga volcano, Tonga, produced an explosion in the atmosphere of a size that has not been documented in the modern geophysical record. The event generated a broad range of atmospheric waves observed globally by various ground-based and spaceborne instrumentation networks. Most prominent was the surface-guided Lamb wave (≲0.01 hertz), which we observed prop
Authors
Robin S. Matoza, David Fee, Jelle D. Assink, Alexandra M. Iezzi, David N. Green, Keehoon Kim, Liam Toney, Thomas Lecocq, Siddharth Krishnamoorthy, Jean-Marie Lalande, Kiwamu Nishida, Kent L. Gee, Matthew M. Haney, Hugo D. Ortiz, Quentin Brissaud, Léo Martire, Lucie Rolland, Panagiotis Vergados, Alexandra Nippress, Junghyun Park, Shahar Shani-Kadmiel, Alex Witsil, Stephen Arrowsmith, Corentin Caudron, Shingo Watada, Anna Perttu, Benoit Taisne, Pierrick Mialle, Alexis Le Pichon, Julien Vergoz, Patrick Hupe, Philip S. Blom, Roger M. Waxler, Silvio De Angelis, Jonathan Snively, Adam T. Ringler, Robert E. Anthony, A.D. Jolly, Geoff Kilgour, Gil Averbuch, Maurizio Ripepe, Mie Ichihara, Alejandra Arciniega-Ceballos, Elvira Astafyeva, Lars Ceranna, Sandrine Cevuard, Il-Young Che, Rodrigo de Negri Leiva, Carl W. Ebeling, Läslo G. Evers, Luis E. Franco-Marin, Tom Gabrielson, Katrin Hafner, R. Giles Harrison, Attila Komjathy, Giorgio Lacanna, John J. Lyons, Kenneth A. Macpherson, Emanuele Marchetti, Kathleen McKee, Rob Mellors, Gerardo Mendo-Pérez, T. Dylan Mikesell, Edhah Munaibari, Mayra Oyola-Merced, Iseul Park, Christoph Pilger, Cristina Ramos, Mario Ruiz, Roberto Sabatini, Hans Schwaiger, Dorianne Tailpied, Carrick Talmadge, Jérôme Vidot, Jeremy Webster, David C. Wilson
Evidence for near-source nonlinear propagation of volcano infrasound from Strombolian explosions at Yasur Volcano, Vanuatu
Volcanic eruption source parameters may be estimated from acoustic pressure recordings dominant at infrasonic frequencies (< 20 Hz), yet uncertainties may be high due in part to poorly understood propagation dynamics. Linear acoustic propagation of volcano infrasound is commonly assumed, but nonlinear processes such as wave steepening may distort waveforms and obscure the sourcing process in recor
Authors
Sean P Maher, Robin S Matoza, A.D. Jolly, Catherine de Groot-Hedlin, Kent L. Gee, David Fee, Alexandra M. Iezzi
High-rate very-long-period seismicity at Yasur volcano, Vanuatu: source mechanism and decoupling from surficial explosions and infrasound
Yasur volcano, Vanuatu is a continuously active open-vent basaltic-andesite stratocone with persistent and long-lived eruptive activity. We present results from a seismo-acoustic field experiment at Yasur, providing locally dense broad-band seismic and infrasonic network coverage from 2016 July 27 to August 3. We corroborate our seismo-acoustic observations with coincident video data from cameras
Authors
Robin S Matoza, Bernard A Chouet, A.D. Jolly, Phillip B. Dawson, Rebecca H Fitzgerald, Ben M. Kennedy, David Fee, Alexandra M. Iezzi, Geoff N Kilgour, E. Garaebiti, Sandrine Cevuard
Synthetic evaluation of infrasonic multipole waveform inversion
Acoustic source inversions estimate the mass flow rate of volcanic explosions or yield of chemical explosions and provide insight into potential source directionality. However, the limitations of applying these methods to complex sources and their ability to resolve a stable solution have not been investigated in detail. We perform synthetic infrasound waveform inversions that use 3-D Green’s func
Authors
Alexandra M. Iezzi, Robin S Matoza, David Fee, Keehoon Kim, A.D. Jolly
Science and Products
Dynamics and detection of pulsed tremor at Whakaari (White Island), Aotearoa New Zealand
Volcanic tremor is a crucial indicator for assessing the state and hazard potential of volcanic systems. At Whakaari (White Island volcano, Aotearoa New Zealand), a pulsed tremor signal emerged after a hydrothermal explosion in August 2012. The tremor accompanied the extrusion of a lava dome, before gradually disappearing prior to the onset of renewed hydrothermal activity in January 2013. We inte
Authors
B. Steinke, A.D. Jolly, T. Girona, C. Caudron, L.A. Bramwell, S.J. Cronin, F. Illsley-Kemp, E.C. Hughes
Time varying crustal anisotropy at Whakaari/White Island volcano
Whakaari/White Island has been the most active New Zealand volcano in the 21st century, producing small phreatic and phreatomagmatic eruptions, which are hard to predict. The most recent eruption occurred in 2019, tragically claiming the lives of 22 individuals and causing numerous injuries. We employed shear-wave splitting analyses to investigate variations in anisotropy during quiescence, unrest
Authors
D.M. Mengesha, M.K. Savage, A.D. Jolly, C.J. Ebinger
UAS-Based Observations of Infrasound Directionality at Stromboli Volcano, Italy
Infrasound (low frequency sound waves) can be used to monitor and characterize volcanic eruptions. However, infrasound sensors are usually placed on the ground, thus providing a limited sampling of the acoustic radiation pattern that can bias source size estimates. We present observations of explosive eruptions from a novel uncrewed aircraft system (UAS)-based infrasound sensor platform that was s
Authors
Alexandra M. Iezzi, Richard M. Buzard, David Fee, Robin S. Matoza, Julia E. Gestrich, A.D. Jolly, Markus Schmid, Valeria Cigala, Ulrich Kueppers, Caron E.J. Vossen, Corrado Cimarelli, Giorgio Lacanna, Maurizio Ripepe
Identification of seismo-volcanic regimes at Whakaari/White Island (New Zealand) via systematic tuning of an unsupervised classifier
We present an algorithm based on Self-Organizing Maps (SOM) and k-means clustering to recognize patterns in a continuous 12.5-year tremor time series recorded at Whakaari/White Island volcano, New Zealand (hereafter referred to as Whakaari). The approach is extendable to a variety of volcanic settings through systematic tuning of the classifier. Hyperparameters are evaluated by statistical means,
Authors
B. Steinke, A.D. Jolly, R. Carniel, D.E. Dempsey, S.J. Cronin
Analog field-scale acoustic study of volcanic eruption directivity using a tiltable liquid nitrogen-charged water cannon
Laterally directed explosive eruptions are responsible for multiple fatalities over the past decade and are an increasingly important volcanology problem. To understand the energy dynamics for these events, we collected field-scale explosion data from nine acoustic sensors surrounding a tiltable cannon as part of an exploratory experimental design. For each cannon discharge, the blast direction wa
Authors
A.D. Jolly, Benjamin Kennedy, Robin S. Matoza, Alexandra M. Iezzi, Bruce W. Christensen, Richard Johnson, Amilea Sork, David Fee
Special issue “Understanding phreatic eruptions - recent observations of Kusatsu-Shirane volcano and equivalents -”
No abstract available.
Authors
Yasuo Ogawa, Takeshi Ohba, Tobias Fischer, Mare Yamamoto, A.D. Jolly
Atmospheric waves and global seismoacoustic observations of the January 2022 Hunga eruption, Tonga
The 15 January 2022 climactic eruption of Hunga volcano, Tonga, produced an explosion in the atmosphere of a size that has not been documented in the modern geophysical record. The event generated a broad range of atmospheric waves observed globally by various ground-based and spaceborne instrumentation networks. Most prominent was the surface-guided Lamb wave (≲0.01 hertz), which we observed prop
Authors
Robin S. Matoza, David Fee, Jelle D. Assink, Alexandra M. Iezzi, David N. Green, Keehoon Kim, Liam Toney, Thomas Lecocq, Siddharth Krishnamoorthy, Jean-Marie Lalande, Kiwamu Nishida, Kent L. Gee, Matthew M. Haney, Hugo D. Ortiz, Quentin Brissaud, Léo Martire, Lucie Rolland, Panagiotis Vergados, Alexandra Nippress, Junghyun Park, Shahar Shani-Kadmiel, Alex Witsil, Stephen Arrowsmith, Corentin Caudron, Shingo Watada, Anna Perttu, Benoit Taisne, Pierrick Mialle, Alexis Le Pichon, Julien Vergoz, Patrick Hupe, Philip S. Blom, Roger M. Waxler, Silvio De Angelis, Jonathan Snively, Adam T. Ringler, Robert E. Anthony, A.D. Jolly, Geoff Kilgour, Gil Averbuch, Maurizio Ripepe, Mie Ichihara, Alejandra Arciniega-Ceballos, Elvira Astafyeva, Lars Ceranna, Sandrine Cevuard, Il-Young Che, Rodrigo de Negri Leiva, Carl W. Ebeling, Läslo G. Evers, Luis E. Franco-Marin, Tom Gabrielson, Katrin Hafner, R. Giles Harrison, Attila Komjathy, Giorgio Lacanna, John J. Lyons, Kenneth A. Macpherson, Emanuele Marchetti, Kathleen McKee, Rob Mellors, Gerardo Mendo-Pérez, T. Dylan Mikesell, Edhah Munaibari, Mayra Oyola-Merced, Iseul Park, Christoph Pilger, Cristina Ramos, Mario Ruiz, Roberto Sabatini, Hans Schwaiger, Dorianne Tailpied, Carrick Talmadge, Jérôme Vidot, Jeremy Webster, David C. Wilson
Evidence for near-source nonlinear propagation of volcano infrasound from Strombolian explosions at Yasur Volcano, Vanuatu
Volcanic eruption source parameters may be estimated from acoustic pressure recordings dominant at infrasonic frequencies (< 20 Hz), yet uncertainties may be high due in part to poorly understood propagation dynamics. Linear acoustic propagation of volcano infrasound is commonly assumed, but nonlinear processes such as wave steepening may distort waveforms and obscure the sourcing process in recor
Authors
Sean P Maher, Robin S Matoza, A.D. Jolly, Catherine de Groot-Hedlin, Kent L. Gee, David Fee, Alexandra M. Iezzi
High-rate very-long-period seismicity at Yasur volcano, Vanuatu: source mechanism and decoupling from surficial explosions and infrasound
Yasur volcano, Vanuatu is a continuously active open-vent basaltic-andesite stratocone with persistent and long-lived eruptive activity. We present results from a seismo-acoustic field experiment at Yasur, providing locally dense broad-band seismic and infrasonic network coverage from 2016 July 27 to August 3. We corroborate our seismo-acoustic observations with coincident video data from cameras
Authors
Robin S Matoza, Bernard A Chouet, A.D. Jolly, Phillip B. Dawson, Rebecca H Fitzgerald, Ben M. Kennedy, David Fee, Alexandra M. Iezzi, Geoff N Kilgour, E. Garaebiti, Sandrine Cevuard
Synthetic evaluation of infrasonic multipole waveform inversion
Acoustic source inversions estimate the mass flow rate of volcanic explosions or yield of chemical explosions and provide insight into potential source directionality. However, the limitations of applying these methods to complex sources and their ability to resolve a stable solution have not been investigated in detail. We perform synthetic infrasound waveform inversions that use 3-D Green’s func
Authors
Alexandra M. Iezzi, Robin S Matoza, David Fee, Keehoon Kim, A.D. Jolly