The 1006th 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.)

Date: Friday, 10 September  13:30-

Place:  Web Meeting (Zoom)

*URL and password will be provided by internal e-mail on September 10.

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  1. 13:30-13:45

TITLE: The August 2021 eruption of Fukutoku-Okanoba volcano inferred from infrasound data recorded at Chichijima-island, 330 km away

AUTHOR: *Mie ICHIHARA, Kiwamu NISHIDA and Takayuki KANEKO

2. 13:45-14:00

TITLE: Rheology of granular materials; a frictional approach for a liquid-like material

AUTHOR: *Franco TAPIA・Mie ICHIHARA, Elisabeth GUAZZELLI (Universite de

Paris-Diderot) and Olivier POULIQUEN (IUSTI, Aix-Marseille Universite)

SUMMARY: Short overview of how local-frictional granular rheology is an interesting tool to the understanding of heterogeneous flows.

3. 14:00-14:15

TITLE: Heat flow distribution seaward of the Japan and Kuril trenches: Implications for fluid circulation in the oceanic crust

AUTHOR: * Makoto YAMANO・Masataka KINOSHITA, Yoshifumi KAWADA (JAMSTEC)

and Kouta SASAKI (Kozo Keikaku Engineering Inc.)

SUMMARY: We discuss features of heat flow distribution on the Japan and Kuril trench outer rises. We also report results of heat flow measurement in the vicinities of normal faults on the seaward slope of the Japan Trench.

4. 14:15-14:30

TITLE: Petrophysical and hydrogeological study of sediment inputs to subduction zones

AUTHOR: Jade DUTILLEUL, Yves GERAUD and Sylvain BOURLANGE (University of Lorraine)

SUMMARY: Examples of relationships between earthquake and tsunami risks and petrophysical and hydrogeological properties of input sedimentary sections at the North Sumatra and Hikurangi margins, from core and logging data of the International Ocean Discovery Program.

*Speaker