The 988th DANWAKAI(program)
(Danwakai: ERI Holds “Danwakai”, a monthly meeting where its members presenttheir most recent academic and technical achievements, on a
Friday of every month. Danwakai is open to the public.)
Date: Friday, 20 December 13:30-
Place: ERI Bldg.2, 5th floor, Conference Room1
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1. 13:30-13:45
TITLE: Resumed volcanic activity at Nishinoshima island in December 2019,
revealed by a seismic and infrasound station on the island.
AUTHOR: * Takao OHMINATO and Atsushi WATANABE
2. 13:45-14:00
TITLE: Subsurface dynamics visualized with muography at Sakurajima volcano
AUTHOR: * Hiroyuki TANAKA
3. 14:00-14:15
TITLE: Relative sea‐level changes over the past centuries in the central
Ryukyu Arc inferred from coral microatolls
AUTHOR: J. WEIL‐ACCARDO(Aix‐Marseille University), N. FEUILLET(IPGP),
K. SATAKE･*T. GOTO, K. GOTO(Dept. of Planetary Science, University of Tokyo),
T. HARADA, H. KAYANNE(Dept. of Planetary Science, University of Tokyo),
M. NAKAMURA（University of the Ryukyus）,
N. RAMOS(University of Philippines-Diliman), J.- M. SAUREL(IPGP), K. SOWA,
S.C. LIU･T.-L. YU and C.-C. SHEN（National Taiwan University）
SUMMARY: We focuses on tectonics in the Ryukyu Arc related to the subduction zone.
We used coral microatolls known for their centimetric accuracy in the record of
relative sea-level (RSL) changes to reconstruct RSL changes over the last century
from living microatolls.
4. 14:15-14:30
TITLE: Optimized placements of offshore tsunameters in southern Java, Indonesia
AUTHOR: *Iyan E. MULIA, Aditya Riadi GUSMAN(GNS Science),
Amy L. WILLIAMSON(University of Oregon), Kenji SATAKE and Shingo WATADA
SUMMARY: We propose a methodology to optimally place tsunameters for both tsunami
forecasting and source characterizations.
5. 14:30-14:45
TITLE: Tsunami data assimilation of the 2015 Torishima earthquake
AUTHOR: * Yuchen WANG･Kenji SATAKE･Osamu SANDANBATA,
Takuto MAEDA(Hirosaki Univ.) and Heng-Yi SU (UC Berkeley)
*Speaker