Any assessment of long-term repository safety will require development of a set of analyses and arguments to demonstrate the persistence of the key safety functions of the geological environment up to several hundred thousand years into the future. However, likely future global climatic and sea-level fluctuations and uplift/subsidence would result in a dramatic change in the location of the current coastline with a subsequent significant change to hydraulic and hydrochemical conditions at coastal sites. It is thus of great importance in the Japanese disposal programme to establish comprehensive techniques for coastal site characterisation. To this end, a systematic framework, which is known as a ‘Geosynthesis Data Flow Diagram’, has been formulated, which outlines a basic roadmap of the geosynthesis methodology for characterising temporal and spatial changes of various properties and processes at coastal sites, with particular focus on the palaeohydrogeology. A basic strategy for stepwise surface-based investigations has also been proposed, which incorporates the geosynthesis methodology in an effective manner. This technique has been introduced in an ongoing collaborative programme for characterising the coastal geological environment around Horonobe in northern Hokkaido, Japan, and now tested and optimised based on accumulated technical knowledge and experience during the progress of the investigations.
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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
Development of Comprehensive Techniques for Coastal Site Characterisation: Part 1—Strategic Overview Available to Purchase
Kunio Ota,
Kunio Ota
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
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Kenji Amano,
Kenji Amano
Japan Atomic Energy Agency, Horonobe, Hokkaido, Japan
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Tadafumi Niizato,
Tadafumi Niizato
Japan Atomic Energy Agency, Horonobe, Hokkaido, Japan
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W. Russell Alexander,
W. Russell Alexander
Bedrock Geosciences, Auenstein, Switzerland
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Yoshiaki Yamanaka
Yoshiaki Yamanaka
Suncoh Consultants, Tokyo, Japan
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Kunio Ota
Japan Atomic Energy Agency, Tokai, Ibaraki, Japan
Kenji Amano
Japan Atomic Energy Agency, Horonobe, Hokkaido, Japan
Tadafumi Niizato
Japan Atomic Energy Agency, Horonobe, Hokkaido, Japan
W. Russell Alexander
Bedrock Geosciences, Auenstein, Switzerland
Yoshiaki Yamanaka
Suncoh Consultants, Tokyo, Japan
Paper No:
ICEM2010-40056, pp. 123-132; 10 pages
Published Online:
April 5, 2011
Citation
Ota, K, Amano, K, Niizato, T, Alexander, WR, & Yamanaka, Y. "Development of Comprehensive Techniques for Coastal Site Characterisation: Part 1—Strategic Overview." 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. 123-132. ASME. https://doi.org/10.1115/ICEM2010-40056
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