JpGU-AGU Joint Meeting 2026

Session information

[E] Poster

S (Solid Earth Sciences ) » S-VC Volcanology

[S-VC39] Submarine volcanism

Mon. May 25, 2026 5:15 PM - 7:00 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

Recent submarine eruptions in island arc settings, including those at Fukutoku-Oka-no-Ba, Sofu Seamount, and Hunga Tonga-Hunga Ha'apai, have drawn new attention to the proximal and distal hazards of submarine eruptions that include pumice rafts, tsunami activity, and destruction of seafloor infrastructure. Elsewhere, long-term detailed geochemical and geophysical observations of deep submarine mafic eruptions such as at Axial Seamount and Fani Maore (Mayotte) have enabled new insights connecting their eruption dynamics, magma plumbing systems, and tectonic context. These modern eruption observations add to the studies of submarine volcanic edifices that together are revealing the full history, causes and impacts of submarine eruptions, such as in the Ogasawara islands where volcanic edifices record the evolution of submarine volcanism from subduction initiation at 52 Ma to the present-day, and where the andesite eruptions of Nishinoshima are proposed to represent continental crust formation through submarine volcanism in thin arc crust. Comprehensive investigations are required not only to improve our ability to predict and mitigate submarine eruption hazards but also to elucidate the fundamental geological processes that control the occurrence and consequences of submarine volcanism. Considering the diversity of submarine volcanism across island arcs, mid-ocean ridges, hotspots, and large oceanic plateaus, we welcome active participation and contributions from researchers who are observing, analyzing, and modeling submarine volcanism.

5:15 PM - 7:00 PM

*Koichiro Obana1, Aki Ito1, Toshiya Fujiwara1, Masayuki Obayashi1, Kentaro Imai1, Yasuyuki Nakamura1, Kenta K Yoshida1, Noriko Tada1, Tomoya Nakajima1, Ryuta Arai1, Masaru Nakano1, Hiroshi Ichihara2, Manaka Kuroda2, Hiroyuki Matsumoto1, Gou Fujie1, Satoru Tanaka1, Shigeaki Ono1, Shuichi Kodaira1 (1. Japan Agency for Marine-Earth Science and Technology, 2. Nagoya University)

5:15 PM - 7:00 PM

*Nishioka Kanon1, Hidemi Ishibashi2, Karin Nonoyama2, Kenta K Yoshida3, HOKANISHI Natsumi4, Atsushi Yasuda4 (1. Graduate School of Integrated Science and Technology, Shizuoka University, 2. Faculty of Science, Shizuoka University, 3. Japan Agency for Marine-Earth Science and Technology, 4. Earthquake Research Institute, The University of Tokyo)

5:15 PM - 7:00 PM

*Tetsuo Matsuno1, Nobukazu Seama2,1, Pierre Wawrzyniak3, Jean-François D'Eu4, Hiroko Sugioka1,2, Tarits Pascal5, Haruki Doi1, Mamoru Sano1 (1. Kobe Ocean-Bottom Exploration Center, Kobe University, 2. Department of Planetology, Graduate School of Science, Kobe University, 3. BRGM, Bureau des Recherches Géologiques et Minières, 4. MAPPEM Geophysics SAS, 5. IUEM, Institut Universitaire Européen de la Mer)

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