ERI Holds “DANWAKAI”, a monthly meeting where its members present their most recent academic and technical achievements, once a month on Friday of every month. DANWAKAI is open to the public.

Please refrain from secondary distribution of the URL to be provided. Due to copyright issues, recording of the video and audio distributed is strictly prohibited.

　　　　Date: 　Friday, December 12, 2025  13:30～(JST)

　　　　Place: ERI Bldg.1, 2nd floor, Seminar Room

　　　　　　　Livestream Zoom Webinar

* The zoom URL and password required for participation will be provided on the day of the event to those who wish to attend.

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1. 13:30-13:45

TITLE: Two-stage approach for earthquake detection using multiple clustering-based classification

AUTHOR: *Tomoki TOKUDA and Hiromichi NAGAO

SUMMARY: We propose a machine learning method to distinguish between true and false positives yielded by deep learning.

2. 13:45-14:00

TITLE: Structure Heterogeneity around the Western End of the 1999 Izmit Earthquake Rupture Revealed by Distributed Acoustic Sensing

AUTHOR: *Ji ZHANG･Aitaro KATO, Wei WANG(Institute of Geology and Geophysics, Chinese Academy of Sciences, China), Shigeki NAKAGAWA and Ahmet Anil DINDAR (Gebze Technical University, Türkiye)

SUMMARY: The seafloor DAS observations provide new high-resolution evidence for the potential role of fault-zone heterogeneity in controlling seismic segmentation along the North Anatolian Fault in the Marmara Sea.

3. 14:00-14:15

TITLE: Numerical simulations reveal the dynamics of the most intense eruption of Hunga Tonga in January 2022

AUTHOR: *Yujiro J. SUZUKI, Beatriz Martínez MONTESINOS･Antonio COSTA(INGV)

SUMMARY: Our 3D numerical simulations explained the observed dynamics of the eruption cloud during the Hunga-Tonga 2022 volcanic eruptions.

*Speaker