| Co-Investigator(Kenkyū-buntansha) |
肥後 祐司 公益財団法人高輝度光科学研究センター, その他部局等, 研究員 (10423435)
上原 誠一郎 九州大学, 理学(系)研究科(研究院), 助教 (70158773)
金嶋 聰 九州大学, 理学(系)研究科(研究院), 教授 (80202018)
加藤 工 九州大学, 理学(系)研究科(研究院), 教授 (90214379)
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| Budget Amount *help |
¥38,870,000 (Direct Cost: ¥29,900,000、Indirect Cost: ¥8,970,000)
Fiscal Year 2016: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2013: ¥23,530,000 (Direct Cost: ¥18,100,000、Indirect Cost: ¥5,430,000)
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| Outline of Final Research Achievements |
Serpentine dehydration has been one of the important candidates for triggering intermediate-depth earthquakes. In order to examine this topic, we developed an AE monitoring system for high-pressure reaction-deformation processes combined with Deformation-DIA apparatus and synchrotron monochromatic X-ray. We applied this technique to investigate shear instability during antigorite dehydration in pure shear up to ~7 GPa and ~600°C . Almost no AEs were detected within the antigorite samples during deformation and syndeformational dehydration. Instead, we detected some AEs outside the sample at around the boundaries of cylindrical parts. Our results suggest that dehydration of antigorite do not directly trigger shear instability at high pressures at least in pure shear under drained condition.
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