Fri. May 31, 2024 10:45 AM - 12:00 PM 303 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-AG Applied Geosciences

[M-AG34] Radioisotope migration: New Development of Environmental Dynamics Research on the 1FNPS Accident

convener:Daisuke Tsumune(University of Tsukuba), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Akira Kirishima(Tohoku University), Hiroaki Kato(Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba), Chairperson:Daisuke Tsumune(University of Tsukuba), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Akira Kirishima(Tohoku University), Hiroaki Kato(Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba)

Fri. May 31, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-AG Applied Geosciences

[M-AG34] Radioisotope migration: New Development of Environmental Dynamics Research on the 1FNPS Accident

convener:Daisuke Tsumune(University of Tsukuba), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Akira Kirishima(Tohoku University), Hiroaki Kato(Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba)

Tue. May 28, 2024 3:30 PM - 4:45 PM 302 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ42] Process, Environment, and Exploration of Marine Manganese Deposits

convener:Akira Usui(Marine Core Research Center, Kochi University), Katsuhiko Suzuki(Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology), Takashi Ito(Faculty of Education, Ibaraki University), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Chairperson:Akira Usui(Marine Core Research Center, Kochi University), Katsuhiko Suzuki(Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology), Takashi Ito(Faculty of Education, Ibaraki University), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

Tue. May 28, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ42] Process, Environment, and Exploration of Marine Manganese Deposits

convener:Akira Usui(Marine Core Research Center, Kochi University), Katsuhiko Suzuki(Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology), Takashi Ito(Faculty of Education, Ibaraki University), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

Thu. May 30, 2024 10:45 AM - 12:00 PM 304 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ45] Frontiers in geochemistry: discussing its appeal and future prospects

convener:Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Tsuyoshi Iizuka(University of Tokyo), Aya Sakaguchi(Faculty of Pure and Applied Science), Shohei Hattori(Nanjing University), Chairperson:Tsuyoshi Iizuka(University of Tokyo), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

Thu. May 30, 2024 1:45 PM - 3:15 PM 304 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ45] Frontiers in geochemistry: discussing its appeal and future prospects

convener:Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Tsuyoshi Iizuka(University of Tokyo), Aya Sakaguchi(Faculty of Pure and Applied Science), Shohei Hattori(Nanjing University), Chairperson:Shohei Hattori(Nanjing University), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

Thu. May 30, 2024 3:30 PM - 4:30 PM 304 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ45] Frontiers in geochemistry: discussing its appeal and future prospects

convener:Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Tsuyoshi Iizuka(University of Tokyo), Aya Sakaguchi(Faculty of Pure and Applied Science), Shohei Hattori(Nanjing University), Chairperson:Aya Sakaguchi(Faculty of Pure and Applied Science), Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

Thu. May 30, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ45] Frontiers in geochemistry: discussing its appeal and future prospects

convener:Yoshio Takahashi(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Tsuyoshi Iizuka(University of Tokyo), Aya Sakaguchi(Faculty of Pure and Applied Science), Shohei Hattori(Nanjing University)

Tue. May 28, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[E] Poster
| P (Space and Planetary Sciences )
| P-PS Planetary Sciences

[P-PS01] Outer Solar System Exploration Today, and Tomorrow

5:15 PM - 6:45 PM

[PPS01-P08] Raman spectroscopy of salt deposits from the simulated subsurface ocean of Enceladus

*Jun Takeshita¹, Yuichiro Cho¹, Haruhisa Tabata¹, Yoshio Takahashi¹, Yayoi N Miura², Seiji Sugita¹ (1.Department of Earth and Planetary Science, University of Tokyo, 2.Earthquake Research Institute, University of Tokyo)

Sun. May 26, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| P (Space and Planetary Sciences )
| P-PS Planetary Sciences

[P-PS08] Formation and evolution of planetary materials in the Solar System

5:15 PM - 6:45 PM

[PPS08-P07] Experiments simulating the formation of insoluble organic matter to establish organic indicators for the heliocentric distances of chondrite parent body accretion

*Masanori Suzuki¹, Yoko Kebukawa², Kensei Kobayashi^1,2, Shohei Yamashita³, Yoshio Takahashi⁴ (1.Yokohama National University, 2.Tokyo Institute of Technology, 3.High Energy Accelerator Research Organization, 4.The University of Tokyo)

Mon. May 27, 2024 1:45 PM - 3:00 PM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

[J] Oral
| H (Human Geosciences )
| H-RE Resource and Engineering Geology

[H-RE13] Earth Resource Science

2:15 PM - 2:30 PM

[HRE13-02] Relationship between the chemical species and extraction rates of rare earth elements (REEs) in ion-adsorption type REE mineralization in Japan

*Makoto Nagasawa¹, Yusuke Shimizu¹, Hiroki Mukai², Yoshio Takahashi¹ (1.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 2.Nuclear Regulation Authority)

Wed. May 29, 2024 10:45 AM - 12:00 PM 105 (International Conference Hall, Makuhari Messe)

[J] Oral
| H (Human Geosciences )
| H-TT Technology & Techniques

[H-TT16] Development and application of environmental traceability methods

10:45 AM - 11:00 AM

[HTT16-11] Insights from a depth transect approach: methane-related subsurface biosphere inhabiting the sedimentary layer at Suwa Basin.

*Hiroki Nishimura^1,2, Atsushi URAI^3,1, Yohei Matsui¹, Toshihiro Yoshimura¹, Miyuki Ogawara¹, Hiroyuki Imachi¹, Yosuke Miyairi², Yusuke Yokoyama², Yuichi Miyabara³, Yoshio Takahashi², Yoshinori Takano¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.The University of Tokyo, 3.Shinshu University)

Fri. May 31, 2024 10:45 AM - 12:15 PM Convention Hall (CH-B) (International Conference Hall, Makuhari Messe)

[E] Oral
| S (Solid Earth Sciences )
| S-IT Science of the Earth's Interior & Techtonophysics

[S-IT14] Deep Earth Sciences

11:15 AM - 11:30 AM

[SIT14-08] Evidence of the heavy noble gas incorporation into KAlSi₃O₈ hollandite under lower mantle conditions

*Riko Iizuka-Oku¹, Hirochika Sumino², Yoshio Takahashi³ (1.Department of Earth Sciences, School of Education, Waseda University, 2.Research Center for Advanced Science and Technology, The University of Tokyo, 3.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

Thu. May 30, 2024 9:00 AM - 10:15 AM 301A (International Conference Hall, Makuhari Messe)

[J] Oral
| S (Solid Earth Sciences )
| S-MP Mineralogy & Petrology

[S-MP24] Deformed rocks, Metamorphic rocks and Tectonics

9:45 AM - 10:00 AM

[SMP24-04] Re-evaluation of the thermobaric structure of the Besshi eclogite-facies unit in the Sanbagawa metamorphic belt based on synchrotron micro-XAFS spectroscopy

*Taisuke Ito¹, Simon Richard Wallis¹, Yoshio Takahashi¹, Shunsuke Endo² (1.Department of Earth and Planetary Science, The University of Tokyo, 2.Department of Earth Science, Interdisciplinary Faculty of Science and Engineering, Shimane University)

Tue. May 28, 2024 9:00 AM - 10:15 AM Convention Hall (CH-A) (International Conference Hall, Makuhari Messe)

[J] Oral
| B (Biogeosciences )
| B-CG Complex & General

[B-CG07] Geo-Bio Interactions and its Applications

9:00 AM - 9:15 AM

[BCG07-01] Aragonitic spherulite in modern stromatolite has a core composed of amorphous calcium carbonate, calcite, and extracellular polymeric substances

*Fumito Shiraishi¹, Takayuki Akimoto¹, Naotaka Tomioka², Satoko Motai^2,3, Yoshio Takahashi⁴ (1.Hiroshima University, 2.JAMSTEC, 3.Yamagata University, 4.The University of Tokyo)

Tue. May 28, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| B (Biogeosciences )
| B-CG Complex & General

[B-CG07] Geo-Bio Interactions and its Applications

5:15 PM - 6:45 PM

[BCG07-P01] Microbial influence on peloid formation in modern hot spring carbonates, Satono-yu, southwestern Japan

*Hannes Stengel¹, Naotaka Tomioka², Yoshio Takahashi³, Fumito Shiraishi¹ (1.Hiroshima University, 2.JAMSTEC Kochi, 3.The University of Tokyo)

5:15 PM - 6:45 PM

[BCG07-P02] Transformation behavior and kinetics of Magnesium Silicate Hydrate : Application of XANES spectroscopy

*Oya Haruki¹, Keisuke Fukushi¹, So Fukaya¹, Yumi Morita¹, Yoshio Takahashi² (1.Kanazawa university, 2.Tokyo University)

5:15 PM - 6:45 PM

[BCG07-P04] Transformation of Ferrihydrite to Crystalline Fe Oxides in Salt Solutions: Implications for Water Chemistry on Early Mars

*So Fukaya¹, Keisuke Fukushi², Yoshio Takahashi³ (1.Graduate School of Natural Science and Technology, Kanazawa University, 2.Institute of Natural and Environmental Technology, Kanazawa University, 3.Department of Earth and Planetary Science, The University of Tokyo)

5:15 PM - 6:45 PM

[BCG07-P05] Cerium hyper-enrichment in mineralized microbial structures on ferromanganese crust

*Akari Fukuda¹, Ayaka Tokumaru¹, Mariko Kouduka¹, Hiroki Suga², Shingo Kato³, Yoshio Takahashi¹, Katsuhiko Suzuki⁴, Akira Usui⁵, Hiroki Mukai⁶, Naotaka Tomioka⁷, Masaki Oura⁸, Motoo Ito⁷, Yohey Suzuki¹ (1.The University of Tokyo, 2.Japan Synchrotron Radiation Research Institute, 3.RIKEN, 4.Submarine Resources Research Center, Japan Agency for Marine-Earth Science and Technology, 5.Marine Core Research Center, Kochi University, 6.Nuclear Regulation Authority, 7.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 8.RIKEN SPring-8 Center)

Mon. May 27, 2024 9:00 AM - 10:15 AM 304 (International Conference Hall, Makuhari Messe)

[E] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS07] Astrobiology

9:00 AM - 9:20 AM

[MIS07-01] Estimation of aqueous environment of the Ryugu parent body and the relationship between solubility of elements and their bioessentiality based on molecular geochemistry

★Invited Papers

*Yoshio Takahashi¹ (1.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

Mon. May 27, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-IS Intersection

[M-IS19] Aqua planetology

5:15 PM - 6:45 PM

[MIS19-P05] Low-temperature mineral synthesis experiments in the Mg²⁺-SiO₂-H⁺-H₂O system:Implications for aqueous alteration of the Ryugu parent body

*Takuma Fujiya¹, Keisuke Fukushi², Takahiro Kawai³, Ryoichi Nakada, So Fukaya¹, Yumi Morita¹, Baasansuren Gankhurel¹, Tegla Elizabeth Jones⁴, Yasuhito Sekine⁴, Yoshio Takahashi⁵ (1.Kanazawa University, 2.Institute of Nature & Environmental Technology, Kanazawa University, 3.University of Tokyo, 4.Earth-Life Science Insitute, Tokyo Institute of Technology, 5.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

Tue. May 28, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-GI General Geosciences, Information Geosciences & Simulations

[M-GI31] Drilling Earth Science

5:15 PM - 6:45 PM

[MGI31-P05] Determination of manganese redox state of microparticles in deep-sea oxic sediment

*Go-Ichiro Uramoto¹, Shohei Yamashita², Yasuo Takeichi³, Yoshio Takahashi⁴ (1.Kochi University, 2.KEK, 3.Osaka University, 4.The University of Tokyo)

Fri. May 31, 2024 10:45 AM - 12:00 PM 303 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-AG Applied Geosciences

[M-AG34] Radioisotope migration: New Development of Environmental Dynamics Research on the 1FNPS Accident

11:45 AM - 12:00 PM

[MAG34-05] The forefront of uranium speciation research: speciation of trace uranium in the environment by advanced X-ray
spectroscopy

*Takumi Yomogida^1,2, Yoshio Takahashi¹ (1.The University of Tokyo, 2.Japan Atomic Energy Agency)

Tue. May 28, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ42] Process, Environment, and Exploration of Marine Manganese Deposits

5:15 PM - 6:45 PM

[MZZ42-P01] Ferromanganese Encrustation Driven by Active Oxidation and Deposition of Manganese Across Ocean Profiles

*li WENSHUAI¹, Yoshio Takahashi¹, Akira Usui², Ryoichi Nakada³, Teruhiko Kashiwabara⁴, Hajime Obata⁵, Naoya Kanna⁵, Yoshihiro Asahara⁶, Hirofumi Tazoe⁷, Masato Tanaka¹ (1.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Tokyo, Japan. , 2.Center for Advanced Marine Core Research, Kochi University, Kochi, Japan. , 3.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Kochi, Japan. , 4.Submarine Resources Research Center (SRRC), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan. , 5.Atmosphere and Ocean Research Institute, The University of Tokyo, Japan. , 6.Department of Earth and Environmental Sciences, Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan. , 7. Institute of Radiation Emergency Medicine, Hirosaki University, Honcho, Hirosaki, Aomori, Japan)

Thu. May 30, 2024 1:45 PM - 3:15 PM 304 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ45] Frontiers in geochemistry: discussing its appeal and future prospects

2:30 PM - 2:45 PM

[MZZ45-07] Seasonal variations in the Fe flux from different sources of atmospheric aerosols in the western subarctic North Pacific

*Minako Kurisu¹, Koji Sugie¹, Fumikazu Taketani¹, Takuma Miyakawa¹, Teruhiko Kashiwabara¹, Katsuhiko Suzuki¹, Kohei Sakata², Jun Nishioka³, Hajime Obata⁴, Tim M. Conway⁵, Yoshio Takahashi⁶ (1.Japan Agency for Marine-Earth Science and Technology, 2.National Institute for Environmental Studies, 3.Institute of Low Temperature Science, Hokkaido University, 4.Atmosphere and Ocean Research Institute, The University of Tokyo, 5.University of South Florida, 6.Graduate school of science, The University of Tokyo)

Thu. May 30, 2024 3:30 PM - 4:30 PM 304 (International Conference Hall, Makuhari Messe)

[J] Oral
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ45] Frontiers in geochemistry: discussing its appeal and future prospects

3:45 PM - 4:00 PM

[MZZ45-11] A new application of XANES by HERFD-XANES measurement and simulation focusing on the weathering reaction of biotite

★Invited Papers

*Akiko Yamaguchi¹, Yoshio Takahashi², Masahiko Okumura¹ (1.Japan Atomic Energy Agency, 2.The University of Tokyo)

4:00 PM - 4:15 PM

[MZZ45-12] Geochemical perspectives on the multiscale comparisons of bacterioplankton communities in thermally stratified lakes in Japan

*TAKAAKI ITAI¹, KOTARO HIRAYAMA¹, HIROKI ISHIMIZU¹, YUMA SATO¹, YOSHIO TAKAHASHI¹, MICHINARI SUNAMURA¹ (1.Department of Earth and Planetary Science, The University of Tokyo)

Thu. May 30, 2024 5:15 PM - 6:45 PM Poster Hall (Exhibition Hall 6, Makuhari Messe)

[J] Poster
| M (Multidisciplinary and Interdisciplinary)
| M-ZZ Others

[M-ZZ45] Frontiers in geochemistry: discussing its appeal and future prospects

5:15 PM - 6:45 PM

[MZZ45-P03] Reconstruction of the aqueous environment of Ryugu's parent body using synchrotron radiation X-ray microscopy

*Takahiro Kawai¹, Keisuke Fukushi², Yoshio Takahashi¹ (1.University of Tokyo, 2.Kanazawa University)

5:15 PM - 6:45 PM

[MZZ45-P10] Mitigation of methane emissions from paddy fields by ferric iron-bearing smectite

*Yoshida Shuntaro¹, Yuki Shimizu¹, Takashi Ijichi¹, Yoko Masuda², Yohei Matsui³, Keishi Senoo², Yoshio Takahashi¹ (1.Graduate School of Science, The University of Tokyo , 2.Graduate School of Agricultural and Life Sciences, The University of Tokyo , 3.JAMSTEC)

5:15 PM - 6:45 PM

[MZZ45-P12] Natural variation of rubidium stable isotope from various environmental materials

*Rimi Konagaya¹, Takehiro Hirayama¹, Yuta Ijichi¹, Hiroyuki Tsuboi¹, TAKAAKI ITAI¹, Yoshio Takahashi¹ (1.The University of Tokyo)

5:15 PM - 6:45 PM

[MZZ45-P13] Redox reaction of Fe in smectite and its role in soil

Yuki Shimizu¹, Yoko Masuda², Keishi Senoo², *Yoshio Takahashi¹ (1.Graduate School of Science, The University of Tokyo, 2.Graduate School of Agricultural ane Life Scences, The University of Tokyo)

Yoshio Takahashi

Convener, Chairperson

Speaker, Author, Co-Author

★Invited Papers

★Invited Papers