[S-VC28] Active Volcanism

Fri. Jun 4, 2021 1:45 PM - 3:15 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:Takao Ohminato(Earthquake Research Institute, Tokyo University), Yuta Maeda(Nagoya 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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1:45 PM - 2:00 PM

[SVC28-07] Seismic structural imaging of shallow fluid supply beneath Mt. Ontake

*Yuta Maeda¹, Toshiki Watanabe¹ (1.Nagoya University)

2:00 PM - 2:15 PM

[SVC28-08] Temporal variations in seismic scattering anomalies estimated by inversion of envelope widths of volcano-tectonic earthquakes at Taal volcano, Philippines.

*Miki Hamamoto ¹, Hiroyuki Kumagai¹, Rudy Lacson² (1.Graduate School of Environmental Studies, Nagoya University, 2.PHIVOLCS (Philippine Institute of Volcanology and Seismology))

2:15 PM - 2:30 PM

[SVC28-09] Attenuation characteristics of Hachijojima Island from twofold spectral ratio method using dense seismic observation

*Utako Watanabe¹, Hiroyuki Azuma¹, Yoshiya Oda¹ (1.Tokyo Metropolitan university)

2:30 PM - 2:45 PM

[SVC28-10] Automatic Detection of First Arrival Time of Seismic Waves with the Fine-tuning: Applying to Observed Datas in Hachijojima

*Hikaru Kunimasa¹, HIROYUKI AZUMA¹, Yoshiya Oda¹ (1.Tokyo Metropolitan University)

2:45 PM - 3:00 PM

[SVC28-11] Moment Tensors of Ring-Faulting at Active Volcanoes: Insights into Vertical-CLVD Earthquakes at the Sierra Negra Caldera, Galápagos Islands

*Osamu Sandanbata^1,2, Hiroo Kanamori³, Luis Rivera⁴, Zhongwen Zhan³, Shingo Watada², Kenji Satake² (1.National Research Institute for Earth Science and Disaster Resilience, Ibaraki, Japan, 2.Earthquake Research Institute, the University of Tokyo, Tokyo, Japan, 3.California Institute of Technology, Pasadena, CA, USA, 4.Université de Strasbourg, CNRS, ITES UMR 7063, Strasbourg F-67084, France)

3:00 PM - 3:15 PM

[SVC28-12] The 2019-2020 Nishinoshima activity inferred from seismic and infrasound observations in the island

*Takao Ohminato¹, Atsushi Watanabe¹ (1.Earthquake Research Institute, Tokyo University)

Session information