The 1018th DANWAKAI(program)

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.

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, October 21, 2022 13:30~(JST)
    Place: Web Meeting (Zoom)

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: Generation of a sustained water-rich column during the 2021 Fukutoku-Oka-no-Ba eruption
    SUMMARY: We analyzed surface phenomena based on high-resolution time-series records (satellite, infrasound), geological and geochemical data, and plume modeling of the August 2021 eruption at Fukutoku-Oka-no-Ba, Ogasawara Islands, and discussed the processes of interaction between magma with high discharge rate and seawater in shallow water.
  2. 13:45-14:00
    TITLE: Deformation of an infinite elastic cone due to a point pressure source buried on the axis: Implications to volcanic deformation
    SUMMARY: A semi-analytical solution for deformation of an infinite elastic cone due to a point pressure source (extension of Mogi’s model for conical topography).
  3. 14:00-14:15
    TITLE: The characteristics of the 2022 Tonga volcanic tsunami in the Pacific Ocean
    AUTHOR: *Gui HU・Linlin LI (Sun Yat-sen University), Zhiyuan REN (National University of Singapore) and Kan ZHANG (Sun Yat-sen University)
    SUMMARY: We conduct tsunami waveform and spectral analyses of the records at 116 coastal gauges and 38 deep-ocean buoys across the Pacific Ocean, and identify four distinct tsunami wave components generated by air-sea coupling and seafloor crustal deformation.