[S-CG61] Ocean Floor Geoscience

Wed. May 23, 2018 3:30 PM - 5:00 PM 302 (3F International Conference Hall, Makuhari Messe)

convener:Kyoko Okino(Atmosphere and Ocean Research Institute, The University of Tokyo), Chairperson:Kitada Kazuya, Totsuka shuhei

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-dhaired by K. Tadokoro (Nagoya Univ.), O. Ishizuka (AIST), T. Toki (Univ. Ryukyu), and N. Takahashi (JAMSTEC).

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3:30 PM - 3:45 PM

[SCG61-07] Characteristics of submarine volcanic activity revealed by the dense magnetic and gravity surveys off Kumejima Island in the Okinawa Trough

*Kazuya Kitada¹, Takafumi Kasaya¹, Hisanori Iwamoto¹, Yoshifumi Nogi² (1.Japan Agency for Marine-Earth Science and Technology, 2.National Institute of Polar Research)

3:45 PM - 4:00 PM

[SCG61-08] Magnetic survey using ROV in the Hakurei site in Izena Hole, Okinawa Trough

*Chie Honsho¹, Sangkyun Lee^2,3, Eiichi Asakawa^2,3, Tomonori Sumi^2,4, Ryota Hino¹ (1.Graduate School of Science, Tohoku University, 2.J-MARES, 3.JGI, Inc., 4.NSENGI, Co., Ltd.)

4:00 PM - 4:15 PM

[SCG61-09] Multi-stage Seismic Survey for Seafloor Massive Sulphide (SMS) exploration

*Eiichi Asakawa¹, Fumitoshi Murakami¹, Kenji Tara¹, Shutaro Saito¹, Sangkyun Lee¹, Hitoshi Tsukahara¹ (1.J-MARES/JGI, Inc.)

4:15 PM - 4:30 PM

[SCG61-10] A correlation between logging and drilled cores at Izena Hole: CK16-05 D/V Chikyu drilling

*Hidenori Kumagai¹, Tatsuo Nozaki¹, Jun-ichiro Ishibashi², Ken Ikehara³, Yasuhiro Yamada¹, Kazuya Kitada¹, Yoshinori Sanada¹, Yuka Masaki¹, Shogo Komori³, Yutaro Takaya⁴, Toru Yamasaki³, Toshiro Nagase⁵, Lena Maeda¹, On-board member of CK16-05 cruise (1.JAMSTEC, 2.Kyushu Univ., 3.AIST, 4.Waseda Univ., 5.Tohoku Univ.)

4:30 PM - 4:45 PM

[SCG61-11] Pb isotope analysis of galena from hydrothermal deposits in the mid-Okinawa Trough using Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry

*Shuhei Totsuka¹, Jun-ichiro Ishibashi², Tatsuo Nozaki³, Jun-Ichi Kimura⁴, Kazuhiko Shimada² (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Kyushu University, 3.Research and Development Center for Submarine Resources, JAMSTEC, 4.Department of Solid Earth Geochemistry, JAMSTEC)

4:45 PM - 5:00 PM

[SCG61-12] Seafloor massive sulfide: Rock Physics Modeling of electrical conductivity characteristics including chemical compositions

*Yusuke Ohta¹, Tada-nori Goto¹, Katsuaki Koike¹, Koki Kashiwaya¹, Weiren Lin¹, Osamu Tadai³, Takafumi Kasaya², Toshiya Kanamatsu², Hideaki Machiyama² (1.Graduate School of Engineering, Kyoto University, 2.Japan Agency for Marine-Earth Science and Technology, 3.Marine Works Japan)

Session information