(Danwakai: 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.)
Date: Friday February 18 13:30-
Place: Web Meeting (Zoom)
*URL and password will be provided by internal e-mail on February 18.
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- 13:30-13:45
TITLE: Adaptive and automatic P- and S-phase pickers based on frequency spectrum variation of sliding time windows
AUTHOR: *Yijun ZHANG, Qiang CHEN and Xianwen LIU(Southwest Jiatong University）
SUMMARY: We here develop a new refining picker which adopts the frequency spectrum variation analysis (FSVA) to perform the adaptive phase onset identification for P and S-wave
2. 13:45-14:00
TITLE: Extension of Cellular Automata Research to Dynamic Fracture
AUTHOR: *Kota FUKUDA, Takahiro HATANO(Osaka University) and Kimihiro MOCHIZUKI
SUMMARY: We propose a cellular automaton model that can handle both rupture and seismic activity, and point out the importance of considering competing time constants.
3. 14:00-14:15
TITLE: TITLE: Analyses of seismo-acoustic data and satellite images extracting the January 2022 eruption sequence of a submarine volcano in Tonga
AUTHOR: *Mie ICHIHARA･Kiwamu NISHIDA･Takayuki KANEKO, Aika KUROKAWA(NIED) and Setsuya NAKADA
SUMMARY: The eruption generated huge waves in the atmosphere, ocean, and solid earth. This study focuses on the volcanic activity in three days including the huge explosion.
4. 14:15-14:30
TITLE: Gravity changes associated with volcanic eruption in Tonga on January 15, 2022 recorded by superconducting gravimeter at Matsushiro
AUTHOR: *Yuichi IMANISHI
*Speaker