[S-CG71] [EJ] Ocean Floor Geoscience

Thu. May 25, 2017 9:00 AM - 10:30 AM 201A (International Conference Hall 2F)

convener:Kyoko Okino(Atmosphere and Ocean Research Institute, The University of Tokyo), Chairperson:Ryuta Arai(Japan Agency Marine-Earth Science and Technology), Chairperson:Kenji Tara(JGI, Inc.)

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 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 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-convened 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

[SCG71-07] Structural interpretation of the hydrothermal activity area by the Multi-source ACS survey method

*Kenji Tara¹, Eiichi Asakawa¹, Fumitoshi Murakami¹, Hitoshi Tsukahara¹, Shutaro Saito¹, Sangkyun Lee¹, Masashi Kato¹, Ehsan Jamali Hondori¹, Tomonori Sumi³, Tadashi Yamakawa², Masami Kose⁴ (1.J-MARES/JGI, 2.J-MARES/MMTEC, 3.J-MARES/NSENGI, 4.J-MARES/JAPEX)

9:15 AM - 9:30 AM

[SCG71-08] Potential of Hydrothermal activity around the northern part of Sumisu Submarine Caldera, Izu-Ogasawara Arc

*Matsushita Koharu¹, Izumi Sakamoto¹, Taiki Uehara¹, Yuta Shinomiya¹, Kosuke Tutumi¹, Nagisa Nakao¹, Marin Miura¹, Masatoshi Yagi¹, Satoshi Okamura², Michio Tanahashi³ (1.Tokai University, 2.Hokkaido Univ.Edu, 3.OHTI)

9:30 AM - 9:45 AM

[SCG71-09] Three-dimensional seismic structure of the Rainbow area, Mid-Atlantic Ridge, at 36°14’N: Fault development, crust-mantle transition, core complex formation, and mantle alteration at slow spreading ridges

*Ryuta Arai¹, Robert Dunn², Deborah Eason², Pablo Canales³, Robert Sohn³ (1.Japan Agency for Marine-Earth Science and Technology, 2.University of Hawaii at Manoa, 3.Woods Hole Oceanographic Institution)

9:45 AM - 10:00 AM

[SCG71-10] Seismicity and 3D seismic velocity structure at the Kairei hydrothermal vent field near the Rodriguez Triple Junction in the Indian Ocean

Taiyu Mori¹, *Toshinori Sato¹, Hiroyoshi Takata¹, Yuki Imai², Yui Noguchi¹, Akihiro Kono¹, Tomoaki Yamada³, Masanao Shinohara³ (1.Graduate School of Science, Chiba University, 2.Faculty of Science, Chiba University, 3.Earthquake Research Institute, the University of Tokyo)

10:00 AM - 10:15 AM

[SCG71-11] Mantle heterogeneity across segment at southern segment of Central Indian Ridge

*Hiroshi Sato¹, Shiki Machida², Ryoko Senda² (1.School of Business Administration, Senshu University, 2.JAMSTEC)

10:15 AM - 10:30 AM

[SCG71-12] Unraveling the oceanic serpentinization reaction from aluminum-zoning in mesh textures

*Ryosuke Oyanagi¹, Atsushi Okamoto¹, Yumiko Harigane², Noriyoshi Tsuchiya¹ (1.Graduate School of Environmental Studies, Tohoku University, 2.Geological Survey of Japan National Institute of Advanced Industrial Science and Technology (AIST))

Session information