The Japanese islands are located in a tectonically active zone. The scientific base is required for assessing the geosphere stability for long-term isolation of radioactive waste in Japan. JAEA is promoting the establishment of investigation method for geotectonic events affecting geosphere stability and prediction model for the future changes of geological environments, that is necessary for site selection and safety assessment of the HLW geological disposal. For seismicity and faulting, detection techniques for active faults without topographic surface expression, such as using helium isotope ratios in hot spring gases or detection of hydrogen gas, and studies on the assessment of fault evolution have been developed. For volcanism and geothermal activity, heat sources for anomalous geothermal activity in non-volcanic regions are considered. Detection techniques for high-temperature fluids and magma deep underground, using geophysical and geochemical approaches, were constructed. For uplift, denudation and climatic/sea-level changes, a methodology to predict the future topographic change was developed. Also, for dating techniques as an essential part to proceed on these studies, C-14 and Be-10 dating using AMS and (U-Th)/He dating using QMS and ICP-MS have been developed. We are planning the establishment of assessment methods for geosphere stability including assessment of the activity of faults encountered in underground excavations, development of long-term prediction model of volcanism and hydrothermal activities, and hydrogeological analyses considering topographic change.
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ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management
October 3–7, 2010
Tsukuba, Japan
Conference Sponsors:
- Nuclear Engineering Division and Environmental Engineering Division
ISBN:
978-0-7918-5453-2
PROCEEDINGS PAPER
Current R & D Activities in the Study on Geosphere Stability
Takahiro Hanamuro,
Takahiro Hanamuro
Japan Atomic Energy Agency, Toki, Gifu, Japan
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Ken-Ichi Yasue,
Ken-Ichi Yasue
Japan Atomic Energy Agency, Toki, Gifu, Japan
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Yoko Saito-Kokubu,
Yoko Saito-Kokubu
Japan Atomic Energy Agency, Toki, Gifu, Japan
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Koichi Asamori,
Koichi Asamori
Japan Atomic Energy Agency, Toki, Gifu, Japan
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Tsuneari Ishimaru,
Tsuneari Ishimaru
Japan Atomic Energy Agency, Toki, Gifu, Japan
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Koji Umeda
Koji Umeda
Japan Atomic Energy Agency, Toki, Gifu, Japan
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Takahiro Hanamuro
Japan Atomic Energy Agency, Toki, Gifu, Japan
Ken-Ichi Yasue
Japan Atomic Energy Agency, Toki, Gifu, Japan
Yoko Saito-Kokubu
Japan Atomic Energy Agency, Toki, Gifu, Japan
Koichi Asamori
Japan Atomic Energy Agency, Toki, Gifu, Japan
Tsuneari Ishimaru
Japan Atomic Energy Agency, Toki, Gifu, Japan
Koji Umeda
Japan Atomic Energy Agency, Toki, Gifu, Japan
Paper No:
ICEM2010-40018, pp. 25-30; 6 pages
Published Online:
April 5, 2011
Citation
Hanamuro, T, Yasue, K, Saito-Kokubu, Y, Asamori, K, Ishimaru, T, & Umeda, K. "Current R & D Activities in the Study on Geosphere Stability." Proceedings of the ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 2. Tsukuba, Japan. October 3–7, 2010. pp. 25-30. ASME. https://doi.org/10.1115/ICEM2010-40018
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