[S-CG48] Ocean Floor Geoscience

Fri. May 27, 2022 3:30 PM - 5:00 PM 105 (International Conference Hall, Makuhari Messe)

convener:Kyoko Okino(Atmosphere and Ocean Research Institute, The University of Tokyo), convener:Keiichi Tadokoro(Research Center for Seismology, Volcanology and Earthquake and Volcano Research Center, Nagoya University), Chairperson:Kazutaka Yasukawa(Frontier Research Center for Energy and Resources, School of Engineering, The University of Tokyo), Erika Tanaka(Japan Agency for Marine-earth Science and Technology)

Most of Earth's volcanism and much of its tectonic activity occur on and beneath the s eafloor. Various phenomena on the seafloor are closely linked to plate tectonics, Earth s tructure and dynamics, and also related to Earth's environments through the hydrosphe re and atmosphere. Seafloor rocks and sediments record Earth's evolution and heat an d material fluxes on the Earth. Ocean Floor Geoscience session covers a broad range of research on seafloor such as mid-ocean ridge process, subduction dynamics, arc magm atism, hot spot and LIPs, crustal movement and structure etc. Every field of researches and every approaches 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. Okino (Univ. Tokyo), K. Tadokoro (Nagoya Univ.), O. Ishizuka (AIST), T. Toki (Univ . Ryukyus), and N. Takahashi (JAMSTEC).

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3:30 PM - 3:45 PM

[SCG48-13] Depositional age of REY-rich mud around Minamitorishima Island using an image detection system for ichthyoliths based on deep learning models

*Takahiro Kitazawa¹, Kazuhide Mimura^2,1, Kazutaka Yasukawa¹, Junichiro Ohta^1,2, Koichiro Fujinaga^2,1, Kentaro Nakamura^1,2, Yasuhiro Kato^1,2 (1.School of Engineering, The University of Tokyo, 2.ORCeNG, Chiba Institute of Technology)

3:45 PM - 4:00 PM

[SCG48-14] Automated detection of hydrothermal emission signatures from Multi-Beam Echo Sounder (MBES) images by deep learning

*Kazuhide Mimura^1,2, Kentaro Nakamura^2,1, Kazuhiro Takao², Kazutaka Yasukawa², Yasuhiro Kato^2,1 (1.Chiba Institute of Technology, Ocean Resources Research Center for Next Generation, 2.School of Engineering, University of Tokyo)

4:00 PM - 4:15 PM

[SCG48-15] Multi-elemental characterization of submarine hydrothermal deposits in the Okinawa Trough based on independent component analysis

*Kazutaka Yasukawa¹, Akito Aichi¹, Kentaro Nakamura^1,2, Tatsuo Nozaki^3,1,4,2, Yutaro Takaya^1,3, Mizuki Ishida¹, Yasuhiro Kato^1,2 (1.School of Engineering, The University of Tokyo, 2.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 3.Submarine Resources Research Center, JAMSTEC, 4.Graduate School of Science, Kobe University)

4:15 PM - 4:30 PM

[SCG48-16] Reactive transport simulation for clarifying ore generation processes in the Izena Hole hydrothermal field, Okinawa Trough

*Shohei Albert Tomita¹, Katsuaki Koike¹, Tada-nori Goto², Katsuhiko Suzuki³, Takafumi Kasaya³ (1.Graduate School of Engineering, Kyoto University, 2.Graduate School of Life science, University of Hyogo, 3.Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

4:30 PM - 4:45 PM

[SCG48-17] High-resolution geochemical and osmium isotopic record across lithologic boundaries of the pelagic clay around Minamitorishima Island in the western North Pacific Ocean

*Haruhito Takuma¹, Kazuhide Mimura², Moei Yano², Junichiro Ohta¹, Koichiro Fujinaga¹, Kazutaka Yasukawa¹, Kentaro Nakamura¹, Yasuhiro Kato¹ (1.School of Engineering Univ. Tokyo, 2.ORCeNG, Chiba Institute of Technology)

4:45 PM - 5:00 PM

[SCG48-18] Depositional environmental changes recorded in the Paleogene calcium carbonates in the mid-latitude South Pacific Ocean—Preliminary report of bulk chemical and Nd-Sr isotope ratios at IODP Site U1553

*Erika Tanaka^1,2,3, Kazutaka Yasukawa³, Takashi Miyazaki¹, Bogdan S. Vaglarov¹, Ann Dunlea⁴, Ingrid Hendy⁵, Expedition 378 Science Party⁶ (1.Japan Agency for Marine-earth Science and Technology, 2.Chiba Institute of Technology, 3.School of Engineering, The University of Tokyo, 4.Woods Hole Oceanographic Institution, 5.University of Michigan, 6.List of scientific participants (http://iodp.tamu.edu/scienceops/precruise/southpacific/participants.html))

Session information