[S-VC28] Active Volcanism

Fri. Jun 4, 2021 3:30 PM - 5:00 PM Ch.25 (Zoom Room 25)

convener:Yuta Maeda(Nagoya University), Takahiro Miwa(National research institute for earth science and disaster prevention), Takeshi Matsushima(Institute of Seismology and Volcanology, Faculty of Science, Kyushu University), Chairperson:Mie Ichihara(Earthquake Research Institute, University of Tokyo), Haruhisa Nakamichi(Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University)

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

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3:30 PM - 3:45 PM

[SVC28-13] Dike inflation process below Sakurajima volcano during the earthquake swarm of 15 August 2015

*Haruhisa Nakamichi¹ (1.Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University)

3:45 PM - 4:00 PM

[SVC28-14] A preliminary report of a pilot experiment for the sustainable repeating seismic experiment in Aira Caldera, Japan.

*Tomoki Tsutsui¹, Takeshi Tameguri¹, Daisuke Miki¹, Masato Iguchi¹, Masanao Shinohara² (1.DPRI, Kyoto University, 2.ERI, University of Tokyo)

4:00 PM - 4:15 PM

[SVC28-15] Temporal variation of b value of volcanic earthquakes associated with the 2008-2011 Shinmoe-dake eruption

*Jun Oikawa¹, Yasuhisa Tajima² (1.Earthquake Research Institute, University of Tokyo, 2.Nippon Koei)

4:15 PM - 4:30 PM

[SVC28-16] Long-term base level variations of seismic power at Shinmoedake, revealing fluid migration prior to the 2011 and 2018 eruptions

*Mie Ichihara¹, Takao Ohminato¹, Minoru Takeo¹ (1.Earthquake Research Institute, University of Tokyo)

4:30 PM - 4:45 PM

[SVC28-17] Waveform inversion of the ultra-long-period seismic event associated with a ground tilt motion during the eruption of Mt.Kusatsu-Shirane, Japan, on January 23, 2018

*Ryohei Takahashi¹, Yuta Maeda¹, Toshiki Watanabe¹ (1.Graduate School of Environmental Studies, Nagoya University)

4:45 PM - 5:00 PM

[SVC28-18] Resistivity structure of Mt. Motoshirane, Japan, inferred from an audio-frequency magnetotelluric survey

*Honda Asami¹, Wataru Kanda¹, Takao Koyama², Shinichi Takakura³, Yasuo Matsunaga¹, Tatsuji Nishizawa¹, Satoshi Ikezawa² (1.School of Science, Tokyo Institute of Technology, 2.Earthquake Research Institute, the University of Tokyo, 3.National Institute of Advanced Industrial Science and Technology (AIST))

Session information