The 989th DANWAKAI(program)

Announcement of the 989th DANWAKAI

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

Date: Friday, 17 January 13:30-
Place: ERI Bldg.2, 5th floor, Conference Room1

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1. 13:30-13:45
TITLE: The 2019 landing survey and sequence of volcanic activity
in Nishinoshima
AUTHOR: *Fukashi MAENO, Mitsuhiro YOSHIMOTO(Mount Fuji Research Institute),
Takao OHMINATO・Atsushi WATANABE・Takayuki KANEKO・Atsushi YASUDA
and Natsumi HOKANISHI
SUMMARY: We report the landing survey at Nishinoshima conducted in September 2019
and the new findings obtained there. The activities from 2013 to the present
is also reviewed.

2. 13:45-14:00
TITLE: Ionospheric disturbance made by the Kchinoerabujima eruption
on 25th May, 2015 【Final report of project research】
AUTHOR: *NAKASHIMA, Y., K. NISHIDA, Y. AOKI and K. HEKI(Hokkaido University)
SUMMARY: I'll report results obtained in this two years.

3. 14:00-14:15
TITLE: Distributed Acoustic Sensing measurements by using seafloor optical
fiber cable system off Sanriku for seismic monitoring
AUTHOR: *Masanao SHINOHARA, Tomoaki YAMADA, Takeshi AKUHARA,
Kimihiro MOCHIZUKI and Shin'ichi SAKAI
SUMMARY: Many earthquakes including micro-earthquakes were recorded by
DAS measurements using a dark fiber of Sanriku seafloor observation system.

4. 14:15-14:30
TITLE: Relationship between heterogeneous crustal structure offshore Ibaraki
and various types of seismicity
AUTHOR: *Kimihiro MOCHIZUKI・Tomoaki YAMADA・Masanao SHINOHARA, Ryota HINO・
Ryosuke AZUMA (Tohoku University), Yoshihiro ITO (DPRI, Kyoto University),
Yoshio MURAI (Hokkaido University), Kenji UEHIRA (NIED)
and Toshinori SATO (Chiba University)
SUMMARY: Subducted seamount is imaged using OBS active-source records and
relationship with various types of seismicity including recently identified
tremors is discussed.

*Speaker