Solid Earth Sciences (S)
Session Sub-category Complex & General(CG)
Session ID S-CG55
Title Ocean Floor Geoscience
Short Title Ocean Floor Geoscience
Main Convener Name Takeshi Iinuma
Affiliation National Research and Development Agency Japan Agency for Marine-Earth Science and Technology
Co-Convener 1 Name Masakazu Fujii
Affiliation National Institute of Polar Research and SOKENDAI
Co-Convener 2 Name Satoko Owari
Affiliation Tokyo University of Marine Science and Technology
Co-Convener 3 Name Yojiro Yamamoto
Affiliation Japan Agency for Marine-Earth Science and Technology
Session Language 
J
Scope 
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-derived rocks and sediments record Earth's evolution and heat/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 and intraplate magmatism, crustal movement and structre, 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.
Presentation Format Oral and Poster presentation
Time Presentation No Title Presenter
Oral Presentation May 27 PM1
13:45 - 14:00 SCG55-01 Estimation of REE discharge fluxes from pelagic sediments to the ocean via pore water on the Shatsky Rise, western North Pacific Ocean Yoki Ito
14:00 - 14:15 SCG55-02 Spatiotemporal distribution of mass accumulation rate of REE in pelagic realms of the Cenozoic ocean Naoto Takada
14:15 - 14:30 SCG55-03 Constraints on REE-rich mud formation based on an ocean-sediment Nd mass balance model: Implications from REE and P fluxes in the ocean Ryosuke Matsunami
14:30 - 14:45 SCG55-04 Development of in-situ geochemical analysis for REE-rich mud using LA-ICP-MS Kodama Rei
14:45 - 15:00 SCG55-05 Tracing Miocene impact events: Age estimation using the Re-Os isotope for pelagic clay in the Minamitorishima EEZ Mindaleva Diana
15:00 - 15:15 SCG55-06 Deep-learning based exploration of seafloor hydrothermal activities at Higashi-Aogashima Knoll Calder Kazuhide Mimura
Oral Presentation May 27 PM2
15:30 - 15:45 SCG55-07 Geochemistry and detrital debris uptake fluxes of ferromanganese crusts in the western North Pacific Ocean Mikasa Ishigaki
15:45 - 16:00 SCG55-08 Geochronological study of sediment cores collected from the Ieyama hydrothermal field in the Okinawa Trough Jun-ichiro Ishibashi
16:00 - 16:15 SCG55-09 Studying Oceanic Lithosphere via Cosmic-ray Muography of Samail Ophiolite Laszlo Olah
16:15 - 16:30 SCG55-10 MOWALL-CIR: Investigation of Marie Celeste Long Oceanic Transform -Preliminary Report of Hakuho-maru KH-24-4 Cruise- Kyoko Okino
16:30 - 16:45 SCG55-11 Interaction between seafloor spreading and arc formation Osamu Ishizuka
Oral Presentation May 28 AM1
9:00 - 9:15 SCG55-12 Understanding the age and crustal structure of the unknown pieces of the Proto-Philippine Sea Plate: Preliminary results of the KH-23-10 cruise Kenichiro Tani
9:15 - 9:30 SCG55-13 Tectonic evolution of the Mariana Trough Seitaro Ono
9:30 - 9:45 SCG55-14 The reconstruction of the plate boundary between the Pacific-Izanagi plates during mid-Cretaceous time Masao Nakanishi
9:45 - 10:00 SCG55-15 An innovative approach to understanding tectonic evolution in the Eastern Nankai Trough, Central Japan. Philomene Vanessa EYANG ONDO EP ELLA NDONG
10:00 - 10:15 SCG55-16 Spatial heterogeneity of crustal extensional deformation in the Yaeyama Rift and Yonaguni Rift in the southern part of the Okinawa Trough Akane Yamamoto
10:15 - 10:30 SCG55-17 Distribution of submarine volcanoes in the Tokara Islands, Kagoshima Prefecture, Japan: Relation to stretching field due to rifting of the back-arc basin Keitatsu Kamochi
Oral Presentation May 28 AM2
10:45 - 11:00 SCG55-18 Magnetic anomaly on the Sofu Seamount, Izu-Ogasawara (Bonin) Arc Toshiya Fujiwara
11:00 - 11:15 SCG55-19 Near-bottom magnetic survey of the Central Indian Ridge for paleomagnetic and tectono-magmatic reconstruction Masakazu Fujii
11:15 - 11:30 SCG55-20 Attempt to investigate vertical magnetic structure of oceanic crust using Marie Celeste transform fault Ryosuke Suzuki
11:30 - 11:45 SCG55-21 Alteration of oceanic crust inferred from physical properties measurements of dredge samples from the Marie Celeste transform fault Tomohiro Ito
11:45 - 12:00 SCG55-22 Petrological Characteristics of Serpentinite Blocks and Metamorphic Clasts from South Chamorro Seamount: Results from KM23-05 Drilling Expedition Hikaru Sawada
12:00 - 12:15 SCG55-23 Distribution of Continental Crust Fragments in the Indian Ocean: IRD/Dropstone or Not—That Is the Question Hiroshi Sato
Oral Presentation May 28 PM1
13:45 - 14:00 SCG55-24 Detection of turbidity currents using the S-net observation RYO NAKANISHI
14:00 - 14:15 SCG55-25 Turbidite-Based Paleoseismology offshore east Hokkaido KanHsi Hsiung
14:15 - 14:30 SCG55-26 Extensive Thick Turbidites in the Southern Kuril Trench: Evidence of the 13th Century Giant Earthquake? Yu-Chun Chang
14:30 - 14:45 SCG55-27 Mechanism prohibiting earthquake growth Ryota Hino
14:45 - 15:00 SCG55-28 Seafloor Crustal Deformation Observations Utilizing Unmanned Surface Vehicles at Plate Subduction zones around the Japanese Islands Takeshi Iinuma
15:00 - 15:15 SCG55-29 Realization of high-precision GNSS-A observation using a seaplane-type UAV Yuto Yoshizumi
Oral Presentation May 28 PM2
15:30 - 15:45 SCG55-30 Initiation of GNSS-Acoustic seafloor geodetic observation along the Japan trench off Boso Fumiaki Tomita
15:45 - 16:00 SCG55-31 Short-period fluctuation of sound velocity field in ocean observed in GNSS-A surveys and internal gravity wave Reiki Ichinohe
16:00 - 16:15 SCG55-32 Effects of internal tides on sound speed field modeling of GNSS-A positioning Tadashi Ishikawa
16:15 - 16:30 SCG55-33 Quantitative effect evaluation and detection of internal tides on GNSS-A seafloor crustal deformation observations Yusuke Yokota
16:30 - 16:45 SCG55-34 Is the small shortening of the baseline length detected by Acoustic Distance Meter significant? Shoutarou Matsumoto
16:45 - 17:00 SCG55-35 Evaluation of vertical oceanic processes affecting seafloor pressure using MRI.COM and DONET observations Hideto Otsuka
Presentation No Title Presenter
Poster Presentation May 28 PM3
SCG55-P01 Geochemical Characteristics of Marine Surface Sediments in East China Sea Tatera Yuka
SCG55-P02 Chemical characteristics of biogenic apatite in REE-rich mud around Minamitorishima Island based on LA-ICP-MS analysis Eisuke Yoshida
SCG55-P03 Exploration of submarine hydrothermal systems based on high-resolution magnetic anomalies in the Higashi-Aogashima Knoll Caldera, Izu-Ogasawara arc, Japan Kazuya Kitada
SCG55-P04 Topographic and geological features of the seafloor from offshore of the mouth of the Fuji River to offshore of Tagonoura Port Nina Arai
SCG55-P05 Characteristics of Diatom Species in Surface Sediments off the Abe River, Suruga Bay, Japan Mei Ikeda
SCG55-P06 Characteristics of sediments distributed in the submarine canyon off Miho Peninsula Shibao Soshi
SCG55-P07 An attempt to collect long sediment samples by modifying a multiple corer V Katsura Kameo
SCG55-P08 Exploration of serpentine-hosted alkaline vent in the southern Mariana forearc region with a focus on carbonates Kosuke Adachi
SCG55-P09 Hybrid Dive Operations Using the Human-Occupied Vehicle Shinkai 6500 and Analysis of Sunken Woods Junji Kaneko
SCG55-P10 A geological cross-section of the Marie Celeste Transform Fault, Central Indian Ridge: preliminary results from the KH-24-4 cruise of R/V Hakuho-maru Kohei Nimura
SCG55-P11 Carbonate Dissolution Variations Over the Past 500,000 Years on the Southwestern Slope of Tamu Massif, Shatsky Rise Yuki Yoshizumi
SCG55-P12 Evaluations of physical properties and pore-fluid pressure in core samples from Site C0023, IODP EXP370 Kohju Nagaoka
SCG55-P13 Sr–Nd–Pb isotopic compositions of basalts along the Marie Celeste Transform in the Central Indian Ridge -Preliminary results- Shiki Machida
SCG55-P14 Completion of physical properties data of IODP Site C0011, C0012 and evaluation of structure model of the Nankai Trough off the Kumano basin by using synthetic seismogram method Korai Ryusei
SCG55-P15 Distribution and Formation Process of Filled Mineral Belt Developing Beneath the Nankai Trough Seafloor Natsuki Nomura
SCG55-P16 Formation Process of the Lyra Basin in the Western Equatorial Pacific Ocean Futa Honda
SCG55-P17 Geophysical Observations During Hakuho-maru KH-19-6 Leg 4 and Preliminary Analysis of the Phoenix Ridge Spreading Process Hiroaki Koge
SCG55-P18 Reidentification of the magnetic anomaly lineations in the West Philippine Basin Soya Ito
SCG55-P19 The temporal variation of Sr-Nd isotopic composition through Cenozoic recorded in subseafloor sediment core from south Atlantic Ocean Yaginuma Sora
SCG55-P20 Characteristics and Evolution Process of the Tectonic Regions in and around the Antarctic Sea as based on Marine Geophysical Data (Final Report) Takeshi Matsumoto
SCG55-P21 Seismicity at an NTO between the first and second segments of the central Indian ridge using the matched filter method Toshinori Sato
SCG55-P22 Seismic velocity structure at 37ºE in the southwest Indian Ridge Hayato Onuki
SCG55-P23 Shallow submarine structure around the Danjyo Basin, Okinawa Trough, based on the Sub-Bottom Profiler Survey Kazuo Nakahigashi
SCG55-P24 Spatial distribution and possible origin of the high velocity lower crust in the northern margin of the South China Sea Jih-Hsin Chang
SCG55-P25 Analyzing Gas Seepage Structures offshore SW Taiwan : Acoustic and Seismic Insights into gas plume Cheng-Yu Ou
SCG55-P26 Seasonal change of distribution of fin whale signals along the Japan trench deduced from continuous seafloor seismic observation Masashi Mochizuki
SCG55-P27 Seafloor Crustal Deformation Analysis along the Nansei-Shoto Trench Using the Open Source Code GARPOS Keisuke Tammori
SCG55-P28 Quantitative comparison of underwater sound speed structures derived from GNSS-Acoustic observations and ocean models Kazuki Sawanaga
SCG55-P29 Searching for optimal parameter settings in kinematic GNSS analysis for GNSS-A geodesy. Shunta Wada
SCG55-P30 Revisiting ranging data of Acoustic Distance Meter at the trench axis off Iwate Tatsuya Miura
SCG55-P31 Estimating Vertical Movement During the 2024 Boso Slow Slip from Ocean Bottom Pressure Gauge and an Oceanic Model Shion Kanazawa
SCG55-P32 Quantitative evaluation of accuracy and precision for the RBR pressure sensor based on the laboratory experiment Shuichi Suzuki
SCG55-P33 Assessment of long-term drift removal performance using the A-0-A approach based on the laboratory experiment Takumi Hagihara