Annual report for research on geosphere stability for long-term isolation of radioactive waste in fiscal year 2015

Ishimaru, Tsuneari ; Umeda, Koji*; Yasue, Kenichi; Kokubu, Yoko   ; Niwa, Masakazu   ; Asamori, Koichi; Watanabe, Takahiro   ; Yokoyama, Tatsunori   ; Fujita, Natsuko   ; Shimizu, Mayuko   ; Hama, Yuki; Saiga, Atsushi  

This annual report documents the progress of research and development (R&D) in the 1st fiscal year during the JAEA 3rd Mid- and Long-term Plan (fiscal years 2015-2021) to provide the scientific base for assessing geosphere stability for long-term isolation of the high-level radioactive waste. The planned framework is structured into the following categories: (1) Development and systematization of investigation techniques, (2) Development of models for long-term estimation and effective assessment, (3) Development of dating techniques. In this paper, the current status of R&D activities with previous scientific and technological progress is summarized.