| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
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| Outline of Final Research Achievements |
By constructing a 4m-long rock friction experiment apparatus, we conducted several experiments on the initiation and propagation of earthquake rupture process. We confirmed that the critical initial crack size was consistent with that reported by Uenishi and Rice. The magnitude of the foreshocks that occurred during the initiation process were proportional to the local loading velocity, indicating that the generation of foreshocks might be related to the rheological process. In addition, using the 1.5m-long rock friction apparatus data, whether foreshock or slow slip occur depends on the heterogeneity on the fault surfaces and they occurred complementally each other.
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