The 947th DANWAKAI(program)

All members concerned

                                            Earthquake Research Institute

                                               The University of Tokyo

                                               Director

                                                      Kazushige Obara


              Announcement of the 947th 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,18 Mar 13:30-

Place: ERI Bldg.2, 5th floor, Conference room1




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1. 13:30-13:45

TITLE: Nucleation process of an M2 earthquake in a deep gold mine in South Africa inferred from on-fault foreshock activity

AUTHOR: *Yasuo YABE (Tohoku University), Masao NAKATANI, Makoto NAOI (Kyoto University), J. Philipp (GMuG), C. Janssen (GFZ), Hironori KAWAKATA (Ritsumeikan University),D. Georg (GFZ), Hiroshi OGASAWARA (Ritsumeikan University).



2. 13:45-14:00

TITLE: Past ca. 800 years eruption history of Zao volcano, NE Japan

AUTHOR: *Masao BAN(ERI Visiting Professor; Yamagata University)



3. 14:00-14:15

TITLE: Sudden changes in the amplitude-frequency distribution of long-period tremors at Aso volcano, southwest Japan

AUTHOR: *Osamu SANDANBATA・Kazushige OBARA・Takuto MAEDA, Ryota TAKAGI(Tohoku University), Kenji SATAKE



4. 14:15-14:30

TITLE: Structure of the Philippine Sea Plate in the southernmost area of the Southern Japanese Alps using seismic array records

AUTHOR: Yusuke KAWASAKI (OYO), *Toshiki WATANABE, Aitaro KATO (Nagoya University), Tanio ITO (Teikyo-Heisei University), Ken'ichi KANO (Shizuoka University)

SUMMARY: We imaged the structure of the PHS and the continental crust under the southernmost area of the southern Japanese Alps using receiver function and seismic tomography analyses.



5. 14:30-14:45

TITLE: GNSS buoy array in the ocean for a synthetic disaster mitigation system - basic experiments and future plan –

AUTHOR: *Teruyuki KATO, Yukihiro TERADA (Nat. Inst. Tech, Kochi Col.), Shin’ichi YAMAMOTO (NICT), Keiichi TADOKORO (Nagoya University),Akira FUTAMURA (Nat. Inst. Tech, Yuge Col.), Akinori SHOJI (Met. Res. Inst.), Mamoru ISHII (NICT) , Naohiko IWAKIRI (NICT)

SUMMARY: A GNSS buoy experiment for satellite data transmission and future scope of the GNSS buoy array in the ocean will be presented.




*Speaker