Session Details
[U-09]Submarine volcanic eruption in Tonga accompanied by a meteo-tsunami
Sun. May 22, 2022 9:00 AM - 10:30 AM JST
Sun. May 22, 2022 12:00 AM - 1:30 AM UTC
Sun. May 22, 2022 12:00 AM - 1:30 AM UTC
Exhibition Hall Special Setting (1) Exhibition Hall 8, Makuhari Messe
convener:Toshiyuki Hibiya(Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo), convener:Fukashi Maeno(Earthquake Research Institute, University of Tokyo), convener:Kensuke Nakajima(Department of Earth and Planetary Sciences,Flculty of Sciences,Kyushu University), convener:Yoshihiko Tamura(Research Institute for Marine Geodynamics, Japan Agency for Maine-Earth Science and Technology), Chairperson:Toshiyuki Hibiya(Department of Ocean Sciences, Tokyo University of Marine Science and Technology), Kensuke Nakajima(Department of Earth and Planetary Sciences,Flculty of Sciences,Kyushu University)
On January 15, 2022, a large-scale submarine eruption occurred at the Hunga Tonga-Hunga Ha'apai volcano (Hunga volcano) in the Tonga Islands, causing an enormous disaster due to the resulting tsunami and ash fall. In addition to the formation of a large volcanic plume in a short period of time, the eruption created atmospheric pressure disturbances accompanied by meteo-tsunamis as well as ionospheric disturbances, all of which were widely observed throughout the world including the Japanese Islands. This is the first time in modern earth science that detailed observations of such various disturbances caused by a volcanic eruption have been made globally. Understanding magma generation at Hunga volcano, including in the present case, combined with a comparison of volcanic activity between the Tonga Arc and the Izu-Ogasawara Arc, both of which are oceanic island arcs, will provide important insights into submarine eruptions around Japan.
The purpose of this session is to promote discussion and deepen our understanding of submarine volcanic eruptions and all the disturbances they cause in the geosphere. We invite presentations from diverse research fields covering topics such as the characteristics of the Hunga volcanic eruption itself (i.e., location of the eruption site, its size and intensity, the nature of the resulting plume, and the eruption sequence) and comparison with other volcanic eruptions, and the characteristics and excitation mechanisms of atmospheric pressure disturbances and associated meteo-tsunamis as well as ionospheric disturbances.
The purpose of this session is to promote discussion and deepen our understanding of submarine volcanic eruptions and all the disturbances they cause in the geosphere. We invite presentations from diverse research fields covering topics such as the characteristics of the Hunga volcanic eruption itself (i.e., location of the eruption site, its size and intensity, the nature of the resulting plume, and the eruption sequence) and comparison with other volcanic eruptions, and the characteristics and excitation mechanisms of atmospheric pressure disturbances and associated meteo-tsunamis as well as ionospheric disturbances.
[U09-01]The tide level changes due to the volcanic eruption at the Hunga Tonga-Hunga Ha’apai -The correspondence of JMA-
*Kouta Hamada1, Tatsuo Kuwayama1, Kazuyuki Hirano1, Toshiya NAKANO1, Hironori Hayashibara1 (1.Japan Meteorological Agency)
[U09-02]Global ocean-bottom pressure observation of tsunami generated by atmospheric pressure waves on the 2022 Tonga eruption
*Tatsuya Kubota1, Tatsuhiko Saito1, Kiwamu Nishida2 (1.National Research Institute for Earth Science and Disaster Resilience, 2.Earthquake Research Institute, the University of Tokyo)
[U09-03]Simulation of the 2022 Tonga Eruption Tsunami Using Pressure Wave Approximated by Triangular Shape
*Toshitaka Baba1, Kazuki Murata2, Yasuhiro Ishimine3, Toshikazu Ebisuzaki4 (1.Graduate School of Science and Technology, Tokushima University, 2.Part and Airport Research Institute, 3.Mount Fuji Research Institute, 4.RIKEN)
[U09-04]Global simulations of meteotsunamis excited by the 2022 Tonga eruption
*Masuo Nakano1, Tatsuo Suzuki1, Shingo Watanabe1, Yujiro Suzuki2 (1.Japan Agency for Marine-Earth Science and Technology, 2.Earthquake Research Institute,The University of Tokyo)
[U09-05]Identification of atmospheric waves from the 2022 Tonga volcano eruption by KUT infrasound network observations.
*Yasuhiro Nishikawa1, Masa-yuki Yamamoto1, Kensuke Nakajima2, Hiroaki Saito3, Yoshihiro Kakinami4, Islam Hamama1 (1.Kochi University of technology. School of System Engoneering., 2.Kyushu University. Faculty of Sciences., 3.Hokkaido University. Department of Cosmosciences., 4.Hokkaido Information University. Space Information Center.)
[U09-06]Electromagnetic conjugacy of ionospheric disturbances after the 2022 Hunga Tonga-Hunga Ha’apai volcanic eruption as seen in GNSS-TEC and SuperDARN Hokkaido pair of radars observations
*Atsuki Shinbori1, Yuichi Otsuka1, Sori Takuya1, Michi Nishioka2, Septi Perwitasari2, Takuo T. Tsuda3, Nozomu Nishitani1 (1.Institute for Space-Earth Environment Research, Nagoya University, 2. National Institute of Information and Communications Technology, 3.The University of Electro-Communications)