JpGU Meeting 2019
Session outline| Solid Earth Sciences (S) | ||
|---|---|---|
| Session Sub-category | Complex & General(CG) | |
| Session ID | S-CG56 | |
| Title | Ocean Floor Geosciences | |
| Short Title | Ocean Floor Geosciences | |
| Main Convener | Name | Kyoko Okino |
| Affiliation | Atmosphere and Ocean Research Institute, The University of Tokyo | |
| 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 and atmosphere. Seafloor rocks and sediments record Earth's evolution and heat and material fluxes on the Earth. Ocean Floor Geosciences session covers a broad range of research on LIPs, crustal movement and structure etc. Any fields of research and approach 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. Tadokoro (Nagoya Univ.), O. Ishizuka (AIST), T. Toki (Univ. Ryukyus), and N. Takahashi (JAMSTEC). | |
| Presentation Format | Oral and Poster presentation | |
| Time | Presentation No | Title | Presenter | Abstract |
|---|---|---|---|---|
| Oral Presentation May 26 AM1 | ||||
| 09:00 - 09:15 | SCG56-01 | The restoration of precipitation record of iron hydroxide about seven years in Nagahama Bay, Satsuma Iwo-jima, Kagoshima. | Naoya Sakamoto | |
| 09:15 - 09:30 | SCG56-02 | Mineralogical and geochemical study of hydrothermal deposits beneath the seafloor at the Gondou field in the Okinawa Trough | Shuhei Totsuka | |
| 09:30 - 09:45 | SCG56-03 | Strontium isotope study of sulfate minerals obtained by scientific drilling from seafloor hydrothermal fields in the Okinawa Trough | Jun-ichiro Ishibashi | |
| 09:45 - 10:00 | SCG56-04 | Numerical modeling of seafloor hydrothermal system in the Izena Caldron, Okinawa Trough | Shohei Albert Tomita | |
| 10:00 - 10:15 | SCG56-05 | Electrical conductivity and spectral IP characteristics in the rock samples obtained in seafloor hydrothermal area and interpretation of them | Yusuke Ohta | |
| 10:15 - 10:30 | SCG56-06 | Geological structure north offshore Ishigaki-Jima estimated from seismic reflection survey | Ayanori Misawa | |
| Oral Presentation May 26 AM2 | ||||
| 10:45 - 11:00 | SCG56-07 | The first report of the evidence for hydrothermal activity in old oceanic plate | Keishiro Azami | |
| 11:00 - 11:15 | SCG56-08 | X-ray computed tomography characterization of the distribution of biogenic apatite and sedimentary structures in pelagic clay around Minamitorishima Island, western North Pacific | Yoichi Usui | |
| 11:15 - 11:30 | SCG56-09 | Geochemistry and distribution of REY-rich mud in the eastern off the Takuyo-Daigo Seamount within the Minamitorishima EEZ | Koichiro Fujinaga | |
| 11:30 - 11:45 | SCG56-10 | Extended lateral correlation of deep-sea sediments around the Minamitorishima EEZ based on downhole variation of bulk chemical composition | Erika Tanaka | |
| 11:45 - 12:00 | SCG56-11 | Tectonics of the abyssal basins surrounding the Ontong Java Plateau | Masao Nakanishi | |
| 12:00 - 12:15 | SCG56-12 | The Cretaceous Normal Superchron: records from the Pacific, Indian and Atlantic oceanic crust | Nobukazu Seama | |
| Oral Presentation May 26 PM1 | ||||
| 13:45 - 14:00 | SCG56-13 | Offshore Postseismic Deformation of the 2011 Tohoku Earthquake Revisited: Application of an Improved GPS-Acoustic Positioning Method Considering Sloping Sound Speed Structure | Chie Honsho | |
| 14:00 - 14:15 | SCG56-14 | Comprehensive analysis for the forearc structure and dynamics by using the S-net data | Naoki Uchida | |
| 14:15 - 14:30 | SCG56-15 | Shallow slow slip event inferred from GNSS-A seafloor geodesy | Tadashi Ishikawa | |
| 14:30 - 14:45 | SCG56-16 | Assessing strike-slip motion at the Shionomisaki Canyon along the Nankai oblique subduction zone using acoustic ranging system | Motoyuki Kido | |
| 14:45 - 15:00 | SCG56-17 | Development of seafloor realtime observation network for crustal deformation in the Nankai Trough: tiltmeter installation | Eiichiro Araki | |
| 15:00 - 15:15 | SCG56-18 | Calibration of the DONET pressure sensor network in the Nankai trough seismogenic zone using a mobile pressure gauge | Yuya Machida | |
| Oral Presentation May 26 PM2 | ||||
| 15:30 - 15:45 | SCG56-19 | Analysis of GNSS/Acoustic geodetic data including the period of the transponder replacement | Ikuta Ryoya | |
| 15:45 - 16:00 | SCG56-20 | IPR (Indirect Path Ranging): a new approach for long-distance acoustic ranging with a moored relay node | Ryusuke Yamamoto | |
| 16:00 - 16:15 | SCG56-21 | Development of a kinematic GNSS-A positioning method using the extended Kalman-filter to detect precise vertical displacement | Fumiaki Tomita | |
| 16:15 - 16:30 | SCG56-22 | DOP-based accuracy evaluation of GNSS-A positioning on a drifting moored buoy quantified using sea trial observation data | Misae Imano | |
| 16:30 - 16:45 | SCG56-23 | Analysis for GNSS/acoustic ocean bottom crustal deformation considering the heterogeneity of sound speed structure in ocean | Natsuki Kinugasa | |
| 16:45 - 17:00 | SCG56-24 | Seismic imaging using ocean bottom nodes in the Ishikari Basin, Japan Sea | Tetsuo No | |
| Oral Presentation May 27 AM1 | ||||
| 09:00 - 09:15 | SCG56-25 | Observational plans of the South Sandwich Arc by R/V Hakuho Maru: Toward understanding formation and evolution of the world southernmost arc-trench system | Asuka Yamaguchi | |
| 09:15 - 09:30 | SCG56-26 | Seismic imaging of the source zone of the 2011 Tohoku-oki earthquake | Dapeng Zhao | |
| 09:30 - 09:45 | SCG56-27 | Drastic export of organic carbon to hadal trench driven by megathrust earthquake | A. Kioka | |
| 09:45 - 10:00 | SCG56-28 | How do trench-fill sediments subduct under the accretionary wedge? | Atsushi Noda | |
| 10:00 - 10:15 | SCG56-29 | Formation process of a slope basin in the Nankai Accretionary prism reconstructed from high-resolution SBP integrated with core data of ODP Site 1175 and Site 1176 | Yuichi Okuma | |
| 10:15 - 10:30 | SCG56-30 | About the turbidity current considered that it occurred in the northern Suruga Bay, Central Japan by the typhoon No.24. -The traces of the accidents and the phenomenon at the sea floor detected the OBSs Array- | Nakao Nagisa | |
| Presentation No | Title | Presenter | Abstract |
|---|---|---|---|
| Poster Presentation May 27 PM2 | |||
| SCG56-P01 | Signature of plume-ridge interaction on bathymetry and geochemistry along mid-ocean ridges: Insights from the Réunion Plume and Central Indian Ridge | Clement Vincent | |
| SCG56-P02 | Spreading rate and its stability of Chile Ridge near the Chile Triple Junction | Takanori Ishihara | |
| SCG56-P03 | Newly Mapped Seamounts on the Antarctic Plate off Southern Chile | Toshiya Fujiwara | |
| SCG56-P04 | Surface-ship gravimetry on board MR16-09 Cruise by R/V MIRAI - Characteristrics of gravity anomaly around the Chile Triple Junction | Takeshi Matsumoto | |
| SCG56-P05 | Magnetic and Magnetotelluric surveys across the Afar depression, transition between continental rifting and sea-floor spreading | Ryokei Yoshimura | |
| SCG56-P06 | Evolution of oceanic core complexes in the Shikoku Basin: when backarc basins cease to open | Kyoko Okino | |
| SCG56-P07 | Thermal evolution of the Lanzo orogenic peridotite massif in western Alps: implications on thermal structure near subcontinental lithosphere-asthenosphere boundary | Tomo Aoki | |
| SCG56-P08 | Comparison of the back-arc basins of the South and the Central Ryukyus in the northwest Pacific | Kohsaku Arai | |
| SCG56-P09 | Geochemistry and zircon U-Pb ages of mafic rocks in the Mikabu and Sorachi-Yezo belts: Comparison with the Shatsky Rise | Naoto Kimura | |
| SCG56-P10 | Submersible magnetics reveals relationship between off-axis volcanism and hydrothermal systems of the Kairei and Yokoniwa fields at the Central Indian Ridge | Masakazu Fujii | |
| SCG56-P11 | Shipboard magnetic and gravity surveys around the Iheya North Knoll and the Iheya Minor Ridge in the Mid-Okinawa Trough: Preliminary results of KR18-14 Leg1/Leg2 cruises | Kazuya Kitada | |
| SCG56-P12 | A shallow scientific drilling at Higashi Ensei Hydrothermal Field, Okinawa Trough | Hidenori Kumagai | |
| SCG56-P13 | Mineralogical and geochemical study of sediment cores collected from the Gondou hydrothermal field in the Okinawa Trough | Jun-ichiro Ishibashi | |
| SCG56-P14 | New type of self-potential anomaly observed near a hydrothermal site of Oomuro-dashi volcano, Izu-Ogasawara arc | Yoshifumi Kawada | |
| SCG56-P15 | Numerical simulation of submarine hydrothermal ore-deposits due to a coupled process of fluid migration and reactive geochemical transport | Claudia Fujita | |
| SCG56-P16 | Mineral composition and grain size distribution of REY-rich mud in the Minamitorishima EEZ: Implication for formation process of extremely REY-rich mud | Sakai Takumi | |
| SCG56-P17 | Geochemical and morphological features of manganese micronodules in REY-rich mud within the Minamitorishima EEZ, western North Pacific Ocean | Satoshi Kino | |
| SCG56-P18 | Seafloor sediment thickness around the Japan and Kurile trenches obtained by traveltime analysis for PS converted wave recoded by ocean bottom seismograms | Ryosuke Azuma | |
| SCG56-P19 | Examination of critical taper theory based on bathymetry data in subduction zones | Hiroaki Koge | |
| SCG56-P20 | Active structures of the Sagami Bay Fault by high-resolution sub-bottom profiling and pin-point core sampling | Juichiro Ashi | |
| SCG56-P21 | Fault Distribution and Structural Characteristic in the Nankai Trough Area, Japan | Rei Arai | |
| SCG56-P22 | Seismicity in the central Ryukyu Trench by the Ocean Bottom Seismometers | Ren Yakabu | |
| SCG56-P23 | Seismic structure of subducted Philippine Sea plate beneath Kyushu inferred from Po/So waves | Azusa Shito | |
| SCG56-P24 | Slope failure features and their distribution in the forearc off northwestern Sumatra | Kenji Hirata | |
| SCG56-P25 | Origin and migration of fluid in the Sumatra subduction input: application of a geochronological method using a long-lived radioisotope of dissolved iodine | Satoko Owari | |
| SCG56-P26 | Challenge to Future Deep-Water Mapping: Unmanned Bathymetric Survey Competition "Shell Ocean Discovery XPRIZE" | MASANAO SUMIYOSHI | |
| SCG56-P27 | Prototype of deep-sea ocean bottom pressure recorder with self-calibration capability using “A-0-A” approach for detection of long-term crustal deformation | Yusaku Ohta | |
| SCG56-P28 | Noise reduction and surface wave array dispersion measurements applied to NOMan's broadband OBS data | Yuki Kawano | |
| SCG56-P29 | High-tech dredge system for abyssal bedrock research; dredge system with acoustic real time monitoring on deep sea floor. | Teruaki Ishii | |
| SCG56-P30 | Construction of Database System on Offshore Faults around Japan | Hiromi Kamata | |
| SCG56-P31 | An integration method for multiple sets of seafloor backscatter intensity data | Shiki Machida | |
| SCG56-P32 | A precise calculation of average depth for ETOPO1 | Yasushi Harada | |