The 933rd DANWAKAI(program)

All members concerned


                                                     Earthquake Research Institute


                                                            The University of Tokyo


                                                                              Director


                                                                Takehiro  Koyaguchi


 


              Announcement of the 933rd 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,26 December 13:30-


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


 


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1.13:30-13:45


Advances in earthquake and tsunami sciences and disaster risk reduction


since the 2004 Indian ocean tsunami


*Kenji Satake


Summary:


On the tenth anniversary of the 2004 Sumatra-Andaman earthquake and


Indian Ocean tsunami, I will review the developments in seismology and


tsunami sciences, as well as their contribution to disaster risk reduction


 


2.13:45-14:00


Detection of viscoelastic relaxation due to the 2004 Sumatra earthquake


by a satellite gravity mission


*Yoshiyuki Tanaka, Takashi Hasegawa (Kyoto University), Hiroshi Tsuruoka,


Volker Klemann(GFZ Potsdam),Zdenek Martinec(Dublin Institute for


Advanced Studies)


 


3.14:00-14:15


Comparison of the slab morphology inferred from the seismic tomography


and numerical simulations


*Satoru Honda


 


4.14:15-14:30


Receiver function image of the subducting Philippine Sea plate around


the Kii Peninsula revealed by onshore and offshore seismic observations


*Takeshi AKUHARA, Kimihiro MOCHIZUKI


Summary:


Water reverberation makes difficult the receiver function analysis


when applied to ocean bottom seismometer (OBS) data. We developed a


method to effectively remove the water reverberations, and applied


the method to the OBS data to reveal the geometry of the Philippine


Sea slab subducting beneath the Kii Peninsula along the Nankai Trough.


We, then, compared the seismicity distribution with the geometry.


 


5.14:30-14:45


Modeling study based on the results of receiver function analysis


at the 1891 Nobi earthquake area


*Takashi Iidaka, Akinori Hashima, Toshihiro Igarashi, Takaya Iwasaki,


Aitaro Kato, (Nagoya University), The Research Group for the Joint Seismic


Observations at the Nobi Area


Summary:


The crustal structure was modeled at the 1891 Nobi earthquake area based


on the results of receiver function analysis using the data of joint


seismic observation


 


6.14:45-15:00


Source process analysis of the 2014 Northern Nagano earthquake using


strong-motion seismograms


*Hiroaki Kobayashi, Hiroe Miyake, Kazuki Koketsu


 


7.15:00-15:15


Imaging Crust and Upper Mantle beneath Mt. Fuji, Japan by Receiver Functions


*Sawako Kinoshita, Toshihiro Igarashi, Yosuke Aoki, Minoru Takeo


 


8.15:15-15:30


Volcanic fluid system and the 2014 activity of Aso Volcano


Satoshi KANESHIMA (Kyushu University), Takahiro OHKURA (Kyoto University),


Mare YAMAMOTO (Tohoku University), *Hitoshi KAWAKATSU


 


9.15:30-15:45


Volcanic plume measurements at Mt. Ontake using a multicopter drone


*Takeshi HASHIMOTO (Hokkaido University), Akihiko TERADA


(Tokyo Institute of Technology), Toshiya MORI (Graduate School of Science,


The University of Tokyo), Hiroshi SHINOHARA (National Institute of Advanced


Industrial Science and Technology),Mitsuhiro YOSHIMOTO (Mount Fuji Research


Institute, Yamanashi Prefectural Government) and Ryo TANAKA (Hokkaido University)


Summary:


We report the first results of volcanic plume measurements at Mt. Ontake


performed with a multicopter drone.


 


 


*Speaker