The 1050th DANWAKAI(program)

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.

The zoom URL and password will be announced on the day of the event to registered participants .

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, September 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.


1. 13:30-13:45

TITLE: Far-Field Tsunami Propagation Generated by the 2025 Kamchatka Peninsula Earthquake (Mw 8.8)

AUTHOR: *Masayoshi SOMEYA, Osamu SANDANBATA, Shingo WATADA and Takashi FURUMURA

SUMMARY: We compare DART observations and numerical simulations of the Kamchatka Peninsula earthquake (Mw 8.8) tsunami, and discuss the need to reinterpret the fault model of the 1952 earthquake.

2. 13:45-14:00

TITLE: Non-Double-Couple Components of the 2024 Noto Earthquake Aftershocks: Influence on Focal Mechanism Estimation

AUTHOR: *Takeshi AKUHARA・Masanao SHINOHARA・Tomoaki YAMADA, Ryosuke AZUMA・Ryota HINO (Tohoku University), Koichiro OBANA・Tsutomu TAKAHASHI・Gou FUJIE・Shuichi KODAIRA (JAMSTEC), Yoshio MURAI (Hokkaido University), Hisatoshi BABA (Tokai University), Yusuke YAMASHITA (Miyazaki Municipal University) and Hiroshi YAKIWARA (Kagoshima University)

3. 14:00-14:15

TITLE: Crustal structure of northern Borneo from Virtual Deep Seismic Sounding (VDSS)

【Director’s introduction (hosting ERI member: Prof. Akuhara)】

AUTHOR: *Harry LINANG(Universiti Malaya), Simone PILIA (King Fahd University of Petroleum and Minerals), Nick RAWLISON (University of Cambridge), Conor BACON (Columbia University), Amy GILLIGAN・David CORNWELL (University of Aberdeen) and Felix TONGKUL (Universiti Malaysia Sabah)

4. 14:15-14:30

TITLE: Simulation of fault rupture subjected to far-field loading: verification and an application

AUTHOR: *Lalith MADDEGEDARA・Elia NICOLIN・Tsuyoshi ICHIMURA・Kohei FUJITA and Muneo HORI(JAMSTEC)

SUMMARY: We propose to induce initial fault stress consistent with complex fault geometry, heterogeneous distribution of materials, etc. and simulate rupture of large scale 3D models.

*Speaker