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

Wed. May 28, 2025 9:00 AM - 10:30 AM Exhibition Hall Special Setting (2) (Exhibition Hall 7&8, Makuhari Messe)

convener:Ichiro Tayasu(Research Institute for Humanity and Nature), Ki-Cheol Shin(Research Institute for Humanity and Nature), Nozomu Takeuchi(Chiba University), Chairperson:Nozomu Takeuchi(Chiba University)

Modern society uses almost all the elements present in the natural world. Although there have long been calls for the sustainable use of the resources that provide these elements and the building of human societies that are in harmony with the environment, the survival of the human race is increasingly at risk as a result of qualitative changes to the environment as a whole. Implementation by the society of methodologies for diagnosing and tracking these various elements of the natural environment and their relationships with humans are now required.
Elements cycle within and among the Earth system spheres, human society, and the human body. Information on the concentrations and stable isotopes of elements is a powerful tool for tracing this cycling and has been applied in studies of atmosphere-hydrosphere circulation, ecological systems, and the life, health, and history of humans. We propose a session to discuss the development and applications of environmental traceability methods toward the goal of establishing traceability in natural and human systems.
We encourage the presentation of research integrating isotopic information in various disciplines, such as geochemistry, hydrology, ecology, geology, mineralogy, anthropology, food science, and forensics. We call the research Environmental Isotope Study.

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9:00 AM - 9:15 AM

[HTT16-01] The current state of interdisciplinary research using the environmental traceability methodology at RIHN

*Ichiro Tayasu¹, Ki-Cheol Shin¹, Yuji Onishi¹ (1.Research Institute for Humanity and Nature)

9:15 AM - 9:30 AM

[HTT16-02] Stable Isotope Variability in Winter Precipitation and Water Vapor in Hirosaki: Implications for Explosive Cyclone-Induced Hydrological Processes

*Akiyo Yatagai¹, Fuga Ohori², Hayoung Bong³, Yan Yang⁴, Kei Yoshimura⁴ (1.Graduate School of Science and Technology, Hirosaki University, 2.Faculty of Science and Technology, Hirosaki University, 3.NASA/GISS, 4.Institute of Industrial Science, The University of Tokyo)

9:30 AM - 9:45 AM

[HTT16-03] Quantitative assessment of the impact of rice paddy agriculture on hydrological cycle using water stable isotope ratios

*Takao Nakagiri¹, Yuri Funaishi¹, Hiroki Maekawa^1,2, Haruhiko Horino¹, Shinji Sakurai¹ (1.Graduate School of Agriculture, Osaka Metropolitan University, 2.Sanyu Consultants Inc.)

9:45 AM - 10:00 AM

[HTT16-04] Effects of 20 years of climate change on the spatial distribution of stable isotope ratios of stream water in the Japanese archipelago

*Masanori Katsuyama¹, Hana Amiya², Soyoka Makino³, Naoko Tokuchi⁴, Daisuke Akaishi⁵, Lina Koyama⁶, Yukio Komai⁴, Yoshimi Itaya⁶, Nay Lin Maung -⁷ (1.Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 2.Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 3.Faculty of Bioscience and Biotechnology, Fukui Prefectural University, 4.Field Science Education and Research Center, Kyoto University, 5.Faculty of Design Technology, Osaka Sangyo University, 6.Graduate School of Infomatics, Kyoto University, 7.Graduate School of Agriculture, Kyoto University)

10:00 AM - 10:15 AM

[HTT16-05] Origin of hot spring waters in Okayama and Tottori Prefectures, southwest Japan: lithium and strontium isotopes as indicators of deep-derived fluids

*Manato AKISHIBA^1,2, Yoshiro Nishio¹ (1.Kochi Univ., 2.Tohoku Univ.)

10:15 AM - 10:30 AM

[HTT16-06] Geochemical investigation of water quality formation at Ono City, Fukui Prefecture

Nanami Kamada², *Katsuyuki Yamashita¹, Osamu Okano², Masataka Ishida², Keisuke Kishimoto², Kanako Kajikawa², Airi Miyamoto², Takanori Nakano³, Yoshihiro Yamada⁴, Yoshitaka Shiroma⁵, Takeshi Matsumoto⁶ (1.Faculty of Environmental, Life, Natural Science and Technology, Okayama University, 2.Department of Earth Sciences, Okayama University, 3.Ono City, 4.Faculty of Agriculture, Kagawa University, 5.Faculty of Education, University of Ryukyus, 6.Neo Chemical)

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