[S-CG52] Ocean Floor Geoscience

Tue. May 23, 2023 9:00 AM - 10:15 AM 301A (International Conference Hall, Makuhari Messe)

convener:Kyoko Okino(Atmosphere and Ocean Research Institute, The University of Tokyo), Keiichi Tadokoro(Research Center for Seismology, Volcanology and Earthquake and Volcano Research Center, Nagoya University), Chairperson:Hiroshi Sato(School of Business Administration, Senshu University), Masakazu Fujii(National Institute of Polar Research and SOKENDAI)

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's structure and dynamics, and also related to Earth's environments through the hydrosphere and atmosphere. Seafloor rocks and sediments record Earth's evolution and heat and 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 magmatism, hot spot and LIPs, crustal movement and structure, etc. Every field of research and every approach are welcomed. The session aims to encourage discussion among scientists from different study fields and to integrate our understanding of the 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 (NIED/JAMSTE).

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9:00 AM - 9:15 AM

[SCG52-06] Seismicity and velocity structure at the Kairei Hydrothermal Field at the Rodriguez Triple Junction in the Indian Ocean

*Toshinori Sato¹, Ayato Morii², Hiroyoshi Takata¹, Tomoaki Yamada³, Masanao Shinohara³ (1.Graduate School of Science, Chiba University, 2.Graduate School of Science and Engineering, Chiba University, 3.Earthquake Research Institute, University of Tokyo)

9:15 AM - 9:30 AM

[SCG52-07] Magnetic anomalies and magnetization intensity around the Rodriguez Triple Junction, Indian Ocean

*Mai Kikui¹, Masao Nakanishi² (1.Graduate School of Science and Engineering, Chiba University, 2.Graduate School of Science, Chiba University)

9:30 AM - 9:45 AM

[SCG52-08] Revising magnetic anomaly lineations in the northwestern Pacific Ocean using the latest data

*Juri Uda ¹, Masao Nakanishi², William W Sager³ (1.Department of Earth Sciences, Faculty of Science, Chiba University, 2.Department of Earth Sciences, Graduate School of Science, Chiba University, 3.Earth and Atmospheric Sciences Department, University of Houston)

9:45 AM - 10:00 AM

[SCG52-09] A cold seep triggered by a hot ridge subduction

*LUCIA ALEJANDRA VILLAR-MUNOZ¹, Masataka Kinoshita², Joaquim P. Bento³, Ivan Vargas-Cordero⁴, Eduardo Contreras-Reyes¹, Umberta Tinivella⁴, Michela Giustiniani⁴, Natsue Abe⁵, Ryo Anma⁶, Yuji Orihashi⁷, Hikaru Iwamori², Tomoaki Nishikawa⁸, Eugenio Andres Veloso⁹, Satoru Haraguchi² (1.Departamento de Geofísica, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile., 2.Earthquake Research Institute, the University of Tokyo, Tokyo, 113-0032, Japan., 3.Escuela de Ciencias del Mar, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile., 4.Istituto Nazionale di Oceanografia e di Geofisica Sperimentale - OGS, 34010, Trieste, Italy. , 5.Mantle Drilling Promotion Office, MarE3, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokohama, Japan., 6.Graduate School of Technology, Industrial and Social Sciences, Tokushima University. , 7.Global Environment and Disaster Prevention, Graduate School of Science and Engineering, Hirosaki University, Hirosaki, Japan. , 8.Disaster Prevention Research Institute, Kyoto University, Japan., 9.Andean Geothermal Center of Excellence (CEGA), Santiago, Chile)

10:00 AM - 10:15 AM

[SCG52-10] Observation of geology and topography in the Japan Trench off Miyagi using a full ocean depth submersible

*Hayato Ueda¹, Todd Bond³, Paige Maroni³, Hiroshi Kitazato², Alan Jamieson³, science team Pressure Drop Ring of Fire Expedition 2022 Japan Cruise Leg2 (1.Department of Geology, Niigata University, 2.School of Marine Resources and Environment, Tokyo University of Marine Science and Technology, 3.Minderoo-UWA Deep-Sea Research Centre, School of Biological Sciences and Oceans Institute, The University of Western Australia)

Session information