[S-CG56] Ocean Floor Geosciences

Mon. May 27, 2019 9:00 AM - 10:30 AM A05 (TOKYO BAY MAKUHARI HALL)

convener:Kyoko Okino(Atmosphere and Ocean Research Institute, The University of Tokyo), Chairperson:Arata Kioka, Atsushi Noda

Most of Earth's volcanism and much of its tectonic activity occur on and beneath the seafloor. Various phenomena on the seafloor are closely linked to plate tectonics, Earth and atmosphere. Seafloor rocks and sediments record Earth's evolution and heat and material fluxes on the Earth. Ocean Floor Geosciences session covers a broad range of research on LIPs, crustal movement and structure etc. Any fields of research and approach are welcomed. The session aims to encourage discussion among scientists from different study fields and to integrate our understanding of ocean floor. The session is co-chaired by K. Tadokoro (Nagoya Univ.), O. Ishizuka (AIST), T. Toki (Univ. Ryukyus), and N. Takahashi (JAMSTEC).

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9:00 AM - 9:15 AM

[SCG56-25] Observational plans of the South Sandwich Arc by R/V Hakuho Maru: Toward understanding formation and evolution of the world southernmost arc-trench system

*Asuka Yamaguchi¹, Kenichiro Tani², Minoru Ikehara³ (1.Atomosphere and Ocean Research Institute, The University of Tokyo, 2.National Museum of Nature and Science, 3.Center for Advanced Marine Core Research, Kochi University)

9:15 AM - 9:30 AM

[SCG56-26] Seismic imaging of the source zone of the 2011 Tohoku-oki earthquake

*Dapeng Zhao¹, Xin Liu¹ (1.Department of Geophysics, Tohoku University)

9:30 AM - 9:45 AM

[SCG56-27] Drastic export of organic carbon to hadal trench driven by megathrust earthquake

*A. Kioka¹, T. Schwestermann¹, J. Moernaut¹, K. Ikehara², T. Kanamatsu³, C. M. McHugh⁴, C. dos Santos Ferreira⁵, G. Wiemer⁵, N. Haghipour⁶, A. J. Kopf⁵, T. I. Eglinton⁶, M. Strasser^1,5 (1.Universität Innsbruck, Austria, 2.GSJ-AIST, Japan, 3.JAMSTEC, Japan, 4.Queens-CUNY, USA, 5.MARUM-U. Bremen, Germany, 6.ETH Zürich, Switzerland)

9:45 AM - 10:00 AM

[SCG56-28] How do trench-fill sediments subduct under the accretionary wedge?

*Atsushi Noda¹, Hiroaki Koge², Yasuhiro Yamada³, Ayumu Miyakawa¹, Juichiro Ashi² (1.National Institute of Advanced Industrial Science and Technology, 2.Atomosphere and Ocean Research Institute, The University of Tokyo, 3.Japan Agency for Marine-Earth Science and Technology)

10:00 AM - 10:15 AM

[SCG56-29] Formation process of a slope basin in the Nankai Accretionary prism reconstructed from high-resolution SBP integrated with core data of ODP Site 1175 and Site 1176

*Yuichi Okuma¹, Asuka Yamaguchi¹, Hiroaki Koge¹, Rina Fukuchi¹, Juichiro Ashi¹ (1.Atmosphere and Ocean Research Institute, the University of Tokyo)

10:15 AM - 10:30 AM

[SCG56-30] About the turbidity current considered that it occurred in the northern Suruga Bay, Central Japan by the typhoon No.24. -The traces of the accidents and the phenomenon at the sea floor detected the OBSs Array-

*Nakao Nagisa¹, Hisatoshi Baba², Hiroshi Sato³, Kayoko Tsuruga⁴, Izumi Sakamoto², Takahito Nishimiya⁵, Masanao Shinohara³, Shintaro Abe⁶ (1.Tokai University, 2.Department of Marine and Earth Science, Tokai University, 3.Earthquake Research Institute, University of Tokyo, 4.Tokyo University of Marine Science and Technology, 5.Meteorological Research Institute, Japan Meteorological Agency, 6.Association for the Development of Earthquake Prediction)

Session information