| Budget Amount *help |
¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2011: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
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| Research Abstract |
This study was conducted for purposes of development of high-precision in-situ rock stress measurement method and the information disclosure of the in-situ rock stress state. We carried out the in-situ stress measurement after the 2011 Tohoku-oki earthquake and performed the comparison with the results before the earthquake. The results are summarized as follows:
(1) The Cyclone Compact Data logger and the bonding device of the strain-cell unit for the Downward Compact Conical-ended Borehole Overcoring method were developed. (2) The in-situ stress measurements were performed three times after the 2011 Tohoku-oki earthquake. We obtained very important results to develop of 3D JAPAN STRESS MAP from the comparison with the results before the earthquake. The results of this study suggest that measurements at a fixed position, albeit at a shallow depth, can be effective for studying the relation between crustal stress and earthquakes.
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