Fumihiko Ikegami / 池上郁彦 (@geoign)

  • 2021~2022: Technical staff at Japan Agency for Marine Earth Sciences and Technology (JAMSTEC)

  • 2020~: Technical staff at Geological Survey of Japan and National Museum of Nature and Science

  • 2015~: Ph.D. student at University of Tasmania, Australia

  • 2014~2015: Ph.D. student at Kyushu University

  • 2012~2014: M.Sc. at Kyushu University, Japan

  • 2008~2012: B.Sc. at Kyushu University, Japan

Keywords of Interest and Specialty

  • Volcanology: Submarine volcanism, Silicic lava, Collapse caldera

  • Geology: Submarine volcanic facies, Back-arc basin

  • GIS: DEM, Point Cloud processing and interpretations

  • Geophysics: Seismic processing and interpretation, Mass-flow simulation

  • Photography: Field photography, Field 3D measurement

Research Areas involved


  • McPhie, J., Jutzeler, M., Ikegami, F., Carey, R., 2020. Syn-eruptive soft-sediment deformation structures in a deep submarine caldera: Havre, 2012. Mar. Geol. 106373. https://doi.org/10.1016/j.margeo.2020.106373

  • Geshi, N., Ikegami, F., Nishihara, A., 2020. Dataset of the time sequence of large-scale pyroclastic eruptions, No.1. Open-File Report of the Geological Survey of Japan, AIST 60.

  • Murch, A.P., White, J.D.L., Barreyre, T., Carey, R.J., Mundana, R., Ikegami, F., 2020. Volcaniclastic Dispersal During Submarine Lava Effusion: The 2012 Eruption of Havre Volcano, Kermadec Arc, New Zealand. Front Earth Sci. Chin. 8, 237. https://doi.org/10.3389/feart.2020.00237

  • Ikegami, F., McPhie, J., Carey, R., Mundana, R., Soule, A., and Jutzeler, M. (2018). The Eruption of Submarine Rhyolite Lavas and Domes in the Deep Ocean – Havre 2012, Kermadec Arc. Front Earth Sci. Chin. 6, 147. http://dx.doi.org/10.3389/feart.2018.00147

  • Carey, R., Adam Soule, S., Manga, M., White, J., McPhie, J., Wysoczanski, R., Jutzeler, M., Tani, K., Yoerger, D., Fornari, D., Caratori-Tontini, F., Houghton, B., Mitchell, S., Ikegami, F., Conway, C., Murch, A., Fauria, K., Jones, M., Cahalan, R., McKenzie, W., 2018. The largest deep-ocean silicic volcanic eruption of the past century. Science Advances 4, e1701121. https://doi.org/10.1126/sciadv.1701121 (The 3D map I have rendered for this paper was featured on January's Top Science images in Nature.)

  • Ikegami, F., Tsuji, T., Kumagai, H., Ishibashi, J.-I., Takai, K., 2015. Active Rifting Structures in Iheya Graben and Adjacent Area of the Mid-Okinawa Trough Observed Through Seismic Reflection Surveys, in: Subseafloor Biosphere Linked to Hydrothermal Systems. Springer, Tokyo, pp. 361–368. https://doi.org/10.1007/978-4-431-54865-2_28 (Peer-reviewed chapter)

  • Ishibashi, J.-I., Ikegami, F., Tsuji, T., Urabe, T., 2015. Hydrothermal Activity in the Okinawa Trough Back-Arc Basin: Geological Background and Hydrothermal Mineralization, in: Subseafloor Biosphere Linked to Hydrothermal Systems. Springer, Tokyo, pp. 337–359. https://doi.org/10.1007/978-4-431-54865-2_27 (Peer-reviewed chapter)

See Google Scholar Page for the full list.


  • 2016: Prize at Earth & Planetary Photography Contest (Geological Society of Japan)

  • 2015-: Tasmania Graduate Scholarship (University of Tasmania)

  • 2014: Full exemption from repayment duty due to outstanding performance (JASSO Scholarship)

  • 2014: Prize at Earth & Planetary Photography Contest (Geological Society of Japan)

  • 2014: Outstanding Student Presentation Award (GSJ Branch of Western Japan)

  • 2013: Prize at Earth & Planetary Photography Contest (Geological Society of Japan)

  • 2012-2014: JASSO Type-I Scholarship (Japan Student Services Organization)

  • 2011: Outstanding Student Presentation Award (Geological Society of Japan 2011 Assembly)


Recent only..

  • Ikegami, F., Carey, R., McPhie, J., 2017b. Topographical and structural controls on the Havre 2012 submarine rhyolitic lavas. IAVCEI 2017 General Assembly. Portland, US. ME22A-4. (Oral)

  • Ikegami, F., Carey, R., McPhie, J., Mundana, R., 2017a. The Effects of Hydrostatic Pressure on the Deep Submarine Silicic Lavas Havre 2012 Eruption. AGU Chapman Conference of Submarine Volcanism. Hobart, Australia. (Poster)

  • Ikegami, F., Carey, R., McPhie, J., Soule, A., Tani, K., 2016. The morphology and effusion rate of deep submarine silicic lava flows and domes emplaced during the Havre 2012 eruption, Kermadec Arc, New Zealand. Japan Geoscience Union General Assembly 2016. Makuhari, Japan. SVC47-34. (Oral)