[S-VC30] Volcanic and igneous activities, and these long-term forecasting

Thu. Jun 3, 2021 1:45 PM - 3:15 PM Ch.25 (Zoom Room 25)

convener:Takeshi Hasegawa(Department of Earth Sciences, College of Science, Ibaraki University), Teruki Oikawa(GSJ, National Institute of Advanced Industrial Science and Technology), Daisuke MIURA(Department of Physical Science, Graduate School of Science, Osaka Prefecture University), Nobuo Geshi(Geological Survey of Japan, The National Institute of Advanced Industrial Science and Technology), Chairperson:Tomohiro Tsuji(Division of Earth Science The Graduate School of Science and Technology for Innovation Yamaguchi University), Chisato Anai(Aso Volcanological Laboratory, Institute for Geothermal Sciences, Graduate School of Science, Kyoto University)

This session focuses on generation and accumulation processes of magmas, magma-crust interaction and degassing, and modes of eruption, long-term forecast of eruption, dispersal and emplacement of the volcanic products. The discussion spans petrological, geochemical, geophysical, and geological processes related with volcanic activity and products in the past, the present and the future.

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1:45 PM - 2:00 PM

[SVC30-01] Paleomagnetic evidence for polygenetic origin of Mamiyadake tephra ring, Ohachidaira maar-caldera complex, Hokkaido, Japan

*Yuki Yasuda¹ (1.Institute of Seismology and Volcanology, Faculty of Science, Hokkaido University)

2:00 PM - 2:15 PM

[SVC30-02] Constraining residence times of plagioclase phenocrysts at the latest activity of Zao volcano

*Motohiro Sato¹, Masao Ban¹ (1.Graduate School of Science and Technology, Yamagata University)

2:15 PM - 2:30 PM

[SVC30-03] Inverse crystallization order of phenocrysts in high-Mg basalt from Ryozen Formation, Fukushima prefecture

*Tsukasa Ohba¹, Tokiya Ando¹ (1.Faculty of International Resource Sciences, Akita University)

2:30 PM - 2:45 PM

[SVC30-04] Discovery of new block and ash flow deposit from Azuma-kofuji volcano, Fukushima, Japan

*Takeshi Hasegawa¹, Suzuki Kazuma¹ (1.Department of Earth Sciences, College of Science, Ibaraki University)

2:45 PM - 3:00 PM

[SVC30-05] Reexamination of the characteristics and eruption style of Haruna-Hakoda tephra found from the southern foot of Akagi Volcano to the eastern foot of Haruna Volcano in North Kanto, Northeast Japan

*Junichi Sato¹, Takehiko Suzuki² (1.Department of Geography, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 2.Faculty of Urban Environmental Sciences, Tokyo Metropolitan University)

3:00 PM - 3:15 PM

[SVC30-06] What have been erupted from the 2020 eruption of Nishinoshima?

*Yoshihiko Tamura¹, Tomoki Sato¹, Kenta Yoshida¹, Fukashi Maeno², Osamu Ishizuka^1,3, Yasuhiro Hirai¹, Noriko Tada¹, Kiyoshi Baba², Daisuke Suetsugu¹, Maiko Miyoshi⁴, Shigeaki Ono¹ (1.Research Institute for Marine Geodynamics, Japan Agency for Maine-Earth Science and Technology, 2.ERI, Univ. of Tokyo, 3.GSJ/AIST, 4.NHK)

Session information