[S-VC45] Active Volcanism

convener:Yuta Maeda(Nagoya University), Takahiro Miwa(National research institute for earth science and disaster prevention), Takeshi Nishimura(Department of Geophysics, Graduate School of Science, Tohoku University)

This session discusses various aspects of active volcanisms including, but not limited to, recent and historical eruptions, various phenomena associated with the volcanic activities, underground structures of the volcanoes, and developments of new instruments based on geophysical, geochemical, geological, and multidiscipline approaches. We also welcome studies on understanding and predicting the transitions of the eruptive activities from observational, theoretical, and experimental approaches.

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[SVC45-07] An overview of volcanic rocks from submarine Kikai Caldera

*Takeshi Hanyu¹, Nobukazu Seama^2,3, Satoru Tanaka¹, Yoshiyuki Tatsumi^3,2, Shunsuke Abe², Morihisa Hamada¹, Tomoko Hanyu³, Hikaru Iwamaru³, Souko Kado², Katsuya Kaneko^2,3, Ryohei Kikuchi², Koji Kiyosugi³, Tetsuo Matsuno^3,2, Iona McIntosh¹, Takashi Miyazaki¹, Reina NAKAOKA³, Nobuyuki Okamoto³, Taiki Orii², Satoshi Shimizu³, Tsuyoshi Shintani⁴, Keiko Suzuki-Kamata^3,2, Maria Luisa Tejada¹, Kenta Ueki¹, Bogdan Stefanov Vaglarov¹ (1.Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics, 2.Kobe University, Graduate School of Science, 3.Kobe University, Kobe Ocean Bottom Exploration Center, 4.Osaka City University, Graduate School of Science)

[SVC45-08] Distribution of the volcanic rock around Kikai caldera submarine volcano, estimated from the geomagnetic anomalies

*Tomoko Hanyu¹, Mamoru Sano¹, Hiroto Yamaguchi², Satoshi Shimizu¹, Tetsuo Matsuno^1,2, Masakazu Fujii^3,4, Yoshifumi Nogi^3,4, Nobukazu Seama^1,2 (1.Kobe Ocean-Bottom Exploration Center, Kobe University, 2.Department of Planetology, Graduate School of Science, Kobe University, 3.National Institute of Polar Research, 4.The Graduate University for Advanced Studies, SOKENDAI )

[SVC45-09] Seismic facies and distribution of submarine pyroclastic deposits originated from multiple large-scale eruptions of Kikai caldera

*Satoshi Shimizu^1,2, Reina NAKAOKA¹, Nobukazu Seama^3,1, Tomoko Hanyu¹, Keiko Suzuki-Kamata^1,3, Koji Kiyosugi¹, Katsuya Kaneko^3,1, Tetsuo Matsuno¹, Hikaru Iwamaru^1,2, Takeshi Hanyu⁴, Shunsuke Abe⁵, Nobuyuki Okamoto^1,6, Yoshiyuki Tatsumi^1,3 (1.Kobe Ocean-Bottom Exploration Center, Kobe University, 2.Nippon Marine Enterprises, Ltd., 3.Department of Planetology, Graduate School of Science, Kobe University, 4.Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamincs, 5.Department of Planetology, Faculty of Science, Kobe University, 6.Japan, Oil, Gas and Metals National Corporation)

[SVC45-10] Preliminary report of marine sediments drilled and cored by D/V Chikyu at Kikai volcano, SW Japan

*Koji Kiyosugi¹, Yoshiyuki Tatsumi¹, Keiko Suzuki-Kamata¹, Katsuya Kaneko², Reina NAKAOKA¹, Yuzuru Yamamoto², Takeshi Hanyu³, Satoshi Shimizu¹, Nobukazu Seama², Tetsuo Matsuno¹, Ryohei Kikuchi², Hiroto Yamaguchi² (1.Kobe Ocean-Bottom Exploration Center, Kobe University, 2.Department of Planetology, Graduate School of Science, Kobe University, 3.Japan Agency for Marine-Earth Science and Technology, Research Institute for Marine Geodynamics)

[SVC45-11] The seismic reflectors beneath Aira Caldera detected from controlled source seismic waves

*Tomoki Tsutsui¹, Takeshi Tameguri¹, Masato Iguchi¹ (1.DPRI, Kyoto University)

[SVC45-12] Three-dimensional Seismic Velocity Structure of Aira Caldera Using Controlled Source and Local Seismic Data

*Takeshi Tameguri¹, Hiroshi Yakiwara², Masato Iguchi¹, Tomoki Tsutsui¹ (1.Sakurajima Volcano Research Center,Disaster Prevention Research Institute, Kyoto University, 2.Nansei-toko Observatory for Earthquakes and Volcanoes, Kagoshima University)