[S-VC37] Dynamics of volcanic eruptions and their physical and chemical processes

Thu. May 30, 2019 3:30 PM - 5:00 PM A07 (TOKYO BAY MAKUHARI HALL)

convener:Yujiro Suzuki(Earthquake Research Institute, The University of Tokyo), Chairperson:Yujiro Suzuki(Earthquake Research Institute, The University of Tokyo), Taishi Yamada

This session discusses the dynamics of volcanic and igneous activities such as magma accumulation, magma ascent in volcanic conduits, and dispersion of volcanic products. In order to understand such multi-scale phenomena, the researches of microscopic and macroscopic scales and the techniques that combine the different scales are required. We aim to discuss the latest approaches based on the recent observations, laboratory experiments and numerical simulations, from the viewpoint of cross-cutting research.

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3:30 PM - 3:45 PM

[SVC37-07] Estimation of the amplitude of infrasoundsignal based on sound diffraction

*Kyoka Ishii¹, Akihiko Yokoo¹ (1.Graduate School of Science, Kyoto University)

3:45 PM - 4:00 PM

[SVC37-08] Mechanism and frequency change of pressure oscillation in the laboratory geyser system

*Noriko Teshima¹, Atsushi Toramaru² (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University)

4:00 PM - 4:15 PM

[SVC37-09] Effects of temperature on the run-out distance of large-scale pyroclastic density currents: Numerical simulation of a two-layer depth-averaged model

*Hiroyuki A. Shimizu¹, Takehiro Koyaguchi¹, Yujiro J. Suzuki¹ (1.Earthquake Research Institute, The University of Tokyo)

4:15 PM - 4:30 PM

[SVC37-10] Total grain-size distribution of pumice fallout deposits (Kj-P1) from 54 ka plinian eruption at Kuju Volcano

*Tomohiro Tsuji¹, Kishimoto Hiroshi², Fujita Kouji², Chisato Nakamura³, Nagata Tomohiro³, Kimura Kazunari³, Michiharu Ikeda¹, Naoki Nishizaka⁴, Kozo Onishi⁴ (1.Shikoku Research Institute Inc., 2.Asia Air Survey Co. Ltd., 3.Naiba, 4.Shikoku Electric Power Co. Inc.)

4:30 PM - 4:45 PM

[SVC37-11] Estimating ashfall volumes for the 2018 Shinmoedake eruptions using the Ellipse Approximated Isopach (EAI) method - How to quantify ashfall volumes from limited ashfall observation locations

*Yasuhisa Tajima¹, Setsuya Nakada², Masashi NAGAI², Fukashi Maeno³, Jun Oikawa³, Teruki Oikawa⁴, Yasuo Miyabuchi⁵, Toshiaki Hasenaka⁵, Masataka Kawaguchi⁵ (1.NIPPON KOEI CO.,LTD., 2.NIED, 3.ERI, the Univ. Tokyo, 4.Geological Survey of Japan, AIST, 5.Kumamoto Univ.)

4:45 PM - 5:00 PM

[SVC37-12] Optical disdrometer measurement of tephra fall: Constraints on radar parameters for eruption cloud observations

★Invited Papers

*Tomofumi Kozono¹, Masato Iguchi², Takahiro Miwa³, Masayuki Maki⁴, Takeshi Maesaka³, Daisuke Miki², Takeshi Nishimura¹ (1.Department of Geophysics, Graduate School of Science, Tohoku University, 2.Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University, 3.National Research Institute for Earth Science and Disaster Resilience, 4.Research and Education Center for Natural Hazards, Kagoshima University)

Session information