[M-TT38] Frontiers in Geochemistry

Fri. May 26, 2023 1:45 PM - 3:00 PM 201B (International Conference Hall, Makuhari Messe)

convener:Hiroyuki Kagi(Geochemical Research Center, Graduate School of Science, University of Tokyo), Shogo Tachibana(UTokyo Organization for Planetary and Space Science, University of Tokyo ), Yusuke Yokoyama(Atmosphere and Ocean Research Institute, University of Tokyo), Chairperson:Hiroyuki Kagi(Geochemical Research Center, Graduate School of Science, University of Tokyo), Shogo Tachibana(UTokyo Organization for Planetary and Space Science, University of Tokyo), Yusuke Yokoyama(Atmosphere and Ocean Research Institute, University of Tokyo)

Earth and planetary sciences have been advanced through utilizing chemical approaches and state-of-the-art analytical techniques. Recent analytical developments allow us to obtain highly precise and accurate data, but at the same time require deepen knowledge on the methodology to use the data correctly and effectively. This session aims at providing an opportunity for various researchers to get together and have a strategic discussion on frontiers in geochemistry and cosmochemistry. In particular, researchers who would like to apply innovative analytical techniques will have chances to discuss with those who work on devising new geochemical methods. We welcome a wide range of cutting-edge geochemical topics, including technical developments, which have a potential for breakthrough of the Earth and planetary sciences. Any presentations related to the direction of future geochemistry and cosmochemistry are also welcome. We expect wide-ranged and future-oriented discussion to further develop geochemistry and cosmochemistry. Note that presentation language in this session can be either English or Japanese.

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1:45 PM - 2:00 PM

[MTT38-01] The leading edge of compound-specific isotope analysis: Carbon and nitrogen isotope analysis of organic compounds to understand biogeochemical and ecological material cycles.

*Nanako O. Ogawa¹, Yoshinori Takano¹, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology)

2:00 PM - 2:15 PM

[MTT38-02] High-resolution dating of surface peat based on natural and anthropogenic radionuclides

*Ren Tsuneoka^1,2, Ota Kosuke^1,2, Yosuke Miyairi¹, Reisuke Kondo¹, Yusuke Yokoyama^1,2,3,4,5 (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 3.Graduate Program on Environmental Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 4.Department of Biogeochemistry, Japan Agency for Marine-Earth Science and Technology, 5.Research School of Physics, The Australian National University)

2:15 PM - 2:30 PM

[MTT38-03] Precise timing of the Anthropocene recorded as trace amount of Plutonium isotopes in the Beppu Bay sediments and radiocarbon in corals from Ishigaki, Japan

*Yusuke Yokoyama^1,2,3,4,5, Stephen Tims⁵, Michaela Froehlich⁵, Shoko Hirabayashi¹, Takahiro AZE¹, L Keith Fifield⁵, Dominik Koll⁵, Yosuke Miyairi¹, Stefan Pavetich⁵, Michinobu Kuwae⁶ (1.Atmosphere and Ocean Research Institute, University of Tokyo, 2.Department of Earth and Planetary Science, University of Tokyo, 3.Graduate Program on Environmental Sciences, University of Tokyo, 4.Biogeochemistry Research Center, Japan Agency for Marine-Earth Science and Technology, 5.Research School of Physics, The Australian National University, 6.Center for Marine Environmental Studies, Ehime University)

2:30 PM - 2:45 PM

[MTT38-04] Elucidation of the reduction of uranium in biotite by advanced X-ray spectroscopy

*Takumi Yomogida^1,2, Shinya Yamada³, Yuto Ichinohe³, Toshiki Sato³, Ryota Hayakawa³, Shinji Okada⁴, Yuichi Toyama⁴, Tadashi Hashimoto², Hirofumi Noda⁵, Tadaaki Isobe⁶, Takuma Okumura⁷, Sayuri Takatori⁸, Takahiro Hiraki⁸, Hideyuki Tatsuno⁷, Kotaro Higashi⁹, Oki Sekizawa⁹, Kiyofumi Nitta⁹, Yuichi Kurihara¹⁰, Naomi Kawamura⁹, Tomoya Uruga⁹, Yoshihiro Kitatsuji², Yoshio Takahashi¹ (1.Tokyo Univ.Tokyo Univ., 2.JAEA, 3.Rikkyo Univ., 4.Chubu Univ., 5.Osaka Univ., 6.RIKEN, 7.Tokyo Metropolitan Univ., 8.Okayama Univ., 9.JASRI, 10.Nagaoka Univ. Technology)

2:45 PM - 3:00 PM

[MTT38-05] Ultimate precision of intensity ratio measurements by Raman spectroscopy: Approaches from simulation, experiment, and theory

*Yuuki Hagiwara¹, Lena Yokokura², Junji Yamamoto³ (1.Japan Agency for Marine-Earth Science and Technology, 2.Hokkaido University, 3.Kyushu University)

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