PUBLICATIONS:

Saito, K., Hoshino, M., Goto, A., Namiki, A. (2025) A computed tomography observation of the Unzen lava reveals the frequent existence of vesicles and crystals in proximity. Sci Rep . https://doi.org/10.1038/s41598-025-28770-4

Namiki, A., K. Saito, S. Okumura, M. Hoshino, K. Uesugi, K. Tsukada, N. Takagi, M. Manga (2025) Crystal-rich magma is solid-like and liquefies when deformed. Journal of Geophysical Research: Solid Earth, 130, e2024JB030483. https://doi.org/10.1029/2024JB030483

Namiki, A. (2024) An Introductory Review of Complex Rheology of Magma for Rheologists. Nihon Reoroji Gakkaishi, 52, 305-311. https://doi.org/10.1678/rheology.52.305

Namiki, A., S. Okumura, A. Goto, T. Yamada (2023) In situ observation of glass-like fragmentation of high-temperature silicate melts generating fine ashes. Communications Earth & Environment 4, 155. https://doi.org/10.1038/s43247-023-00816-3

Okumura, S., K. Uesugi, A. Goto, A. Namiki, K. Matsumoto, T. Sakamaki (2023) Molecular-scale structural changes of silicate melts under tension revealed by time-resolved X-ray diffraction, Chemical Geology 621, 121372. https://doi.org/10.1016/j.chemgeo.2023.121372. or Free PDF

Namiki, A., E. Lev, J. Birnbaum, & J.Baur (2022). An experimental model of unconfined bubbly lava flows: Importance of localized bubble distribution. Journal of Geophysical Research: Solid Earth 127, e2022JB024139. https://doi.org/10.1029/2022JB024139

Ohashi, M., Toramaru, A. & Namiki, A. (2022) Coalescence of two growing bubbles in a Hele–Shaw cell. Scientific Reports 12, 1270. https://doi.org/10.1038/s41598-022-05252-5

Caricchi, L., M. Townsend, E. Rivalta, A. Namiki (2021). The build-up and triggers of volcanic eruptions. Nature Reviews Earth & Environment 2, 458-476. https://doi.org/10.1038/s43017-021-00174-8 or Free PDF

Namiki, A., M.R. Patrick, M. Manga, B. F. Houghton (2021) Brittle fragmentation by rapid gas separation in a Hawaiian fountain. Nature Geoscience 14, 242-247 https://doi.org/10.1038/s41561-021-00709-0 or Free PDF

Introduced in News and Views.

Erratum: In Fig.4b, the vertical axis unit is “Pa” and “MPa” is a typo.

Nayak, A., M. Manga, S. Hurwitz, A. Namiki, P.B. Dawson (2020). Origin and properties of hydrothermal tremor at Lone Star Geyser, Yellowstone National Park, USA. Journal of Geophysical Research: Solid Earth 125, e2020JB019711. https://doi.org/10.1029/2020JB019711

Namiki, A., Y. Tanaka, S. Okumura, O. Sasaki, K. Sano, S. Takeuchi (2020) Fragility and an extremely low shear modulus of high porosity silicic magma. Journal of Volcanology and Geothermal Research 392, 106760. https://doi.org/10.1016/j.jvolgeores.2019.106760

Patrick, M. R., H. R. Dietterich, J. J. Lyons, A. K. Diefenbach, C. Parcheta, K. R. Anderson, A. Namiki, I. Sumita, B. Shiro and J. P. Kauahikaua (2019) Cyclic lava effusion during the 2018 eruption of Kilauea Volcano. Science 366 (6470), eaay9070 https://science.sciencemag.org/content/366/6470/eaay9070

Namiki, A., M. Takahashi, R. Tsutsui (2019) A model experiment of fracture induced long‐period events: Injection of pressurized gas into a viscoelastic rock analog. Geophysical Research Letters 46. https://doi.org/10.1029/2019GL085009

Namiki, A., E. Rivalta, H. Woith, T. Willey, S. Parolai, T. R. Walter (2018) Volcanic activities triggered or inhibited by resonance of volcanic edifices to large earthquakes, Geology, 47 (1): 67-70. https://doi.org/10.1130/G45323.1 Introduced in Research focus.

Namiki, A., Y. Tanaka, T. Yokoyama (2018), Physical characteristics of scoriae and ash from 2014-2015 eruption of Aso Volcano, Japan, Earth, Planets and Space 70,147. https://doi.org/10.1186/s40623-018-0914-5

Namiki, A., and Y. Tanaka (2017), Oscillatory rheology measurements of particle- and bubble-bearing fluids: Solid-like behavior of a crystal-rich basaltic magma, Geophysical Research Letters 44, 8804-8813, doi:10.1002/2017GL074845. https://doi.org/10.1002/2017GL074845

Namiki, A., Y. Ueno, S. Hurwitz,M. Manga, C. Munoz-Saez, and F. Murphy (2016), An experimental study of the role of subsurface plumbing on geothermal discharge, Geochemistry, Geophysics, Geosystems 17, doi:10.1002/2016GC006472.https://doi.org/10.1002/2016GC006472 Selected as an Editor’s Highlight.

Namiki, A., E. Rivalta, H. Woith, T. R. Walter (2016), Sloshing of a bubbly magma reservoir as a mechanism of triggered eruptions, Journal of Volcanology and Geothermal Research 320, 156-171. Invited Research Article. https://doi.org/10.1016/j.jvolgeores.2016.03.010 movie of Figure 3, 4, 5, 6. Introduced in http://www.sciencemag.org/news/2016/04/how-earthquakes-might-trigger-faraway-volcanoes

Munoz-Saez, C., A. Namiki, and M. Manga (2015), Geyser eruption intervals and interactions: Examples from El Tatio, Atacama, Chile, Journal of Geophysical Research: Solid Earth 120, 7490-7507.

Munoz-Saez, C., M. Manga, S. Hurwitz, M. Rudolph, A. Namiki, and C.-Y. Wang (2015), Dynamics within geyser conduits, and sensitivity to environmental perturbations: Insights from a periodic geyser in the El Tatio geyser field, Atacama Desert, Chile, Journal of Volcanology and Geothermal Research 292, 41-45.

Namiki, A., C. Muñoz-Saez, and M. Manga (2014), El Cobreloa: A geyser with two distinct eruption styles, Journal of Geophysical Research: Solid Earth 119, 6229-6248, doi: 10.1002/2014JB011009. Movie of Figure 2a, 2b

Namiki, A., T. Yamaguchi, I. Sumita, T. Suzuki, and S. Ide (2014), Earthquake model experiments in a viscoelastic fluid: A scaling of decreasing magnitudes of earthquakes with depth, Journal of Geophysical Research: Solid Earth 119, 3169-3181, doi:10.1002/2014JB011135. Movie of Figure 6, 7-1, 7-2, 8-1, 8-2

Namiki, A., and T. Kagoshima (2014), Intermittent and efficient outgassing by the upward propagation of film ruptures in a bubbly magma, Journal of Geophysical Research: Solid Earth 119, doi:10.1002/2013JB010576. Movie of Figure 2

Namiki, A., K. Sueyoshi, and N. Takeuchi (2013), Can a sheet-like low-velocity region form an elongated LIP?, Geochemistry, Geophysics, Geosystems 14, doi: 10.1002/ggge.20182. Movie of Figure 3

Shibano, Y., I. Sumita, and A. Namiki (2013), A laboratory model for melting erosion of a magma chamber roof and the generation of a rhythmic layering, Journal of Geophysical Research: Solid Earth 118, 4101-4116, doi:10.1002/jgrb.50295.

Namiki, A. (2012), An empirical scaling of shear-induced outgassing during magma ascent: Intermittent magma ascent causes effective outgassing, Earth and Planetary Science Letters 353-354, 72-81. movie of Figure 2a, 2b, Figure 3

Shibano, Y., A. Namiki, and I. Sumita (2012), Experiments on upward migration of a liquid-rich layer in a granular medium: Implications for a crystalline magma chamber, Geochemistry, Geophysics, Geosystems 13, Q03007, doi:10.1029/2011GC003994. movie of Figure 2a, 2b, 2c, 2d, 2e, Figure 3a, 3b

Kobayashi, T., A. Namiki, and I. Sumita (2010), Excitation of airwaves caused by bubble bursting in a cylindrical conduit: Experiments and a model, Journal of Geophysical Research: Solid Earth 115, B10201, doi:10.1029/2009JB006828. movie of Figure 3, 5, 6

Namiki, A., and M. Manga (2008), Transition between fragmentation and permeable outgassing of low viscosity magmas, Journal of Volcanology and Geothermal Research 169, 48-60. movie of Figure 3

Namiki, A., and M. Manga (2006), Influence of decompression rate on the expansion velocity and expansion style of bubbly fluids, Journal of Geophysical Research: Solid Earth 111, B11208, doi:10.1029/2005JB004132.

Matsumoto, N., A. Namiki, I. Sumita (2006), Influence of a basal thermal anomaly on mantle convection. Physics of the Earth and Planetary Interiors 157, 208-222.

Namiki, A., M. Manga (2005), Response of a bubble bearing viscoelastic fluid to rapid decompression: Implications for explosive volcanic eruptions, Earth and Planetary Science Letters, 236, 269-284. movie of Figure 2

Namiki, A.,(2003), Can the mantle entrain D'' ? Journal of Geophysical Research: Solid Earth 108, No. B10, 2487 10.1029/2002JB002315. movie of Figure 5(a), Figure 5(b)

Namiki, A., Hatakeyama, T., Toramaru, A., Kurita, K., Sumita (2003), I., Bubble size distributions in a convecting layer, Geophysical Research Letters 30, No. 15, 1784 10.1029/2003GL017156. movie of Figure 1(a), Figure 1(b)

Namiki, A., and K. Kurita (2003), Heat transfer and interfacial temperature of the two-layered convection: Implications for the D''-mantle coupling. Geophysical Research Letters 30, No. 1 10.1029/2002GL015809.

Namiki, A., and K. Kurita (2002), Rayleigh-Benard convection with an inclined upper boundary. Physical Review E 65 056301-1-10.

Namiki, A., and K. Kurita (2001), The influence of boundary heterogeneity in experimental models of mantle convection with internal heat sources. Physics of the Earth and Planetary Interiors 128, issues 1-4, 195-205.

Namiki, A., and K. Kurita (1999), The influence of boundary heterogeneity in experimental models of mantle convection. Geophysical Research Letters 26, No. 13, 1929-1932.

Last modified December 2025