| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Outline of Final Research Achievements |
I conducted stick-slip experiments on halite gouges, using a large biaxial friction machine, at a range of normal stresses (10-120 MPa). with increasing normal stress, the halite gouge exhibited a transition from brittle to semi-brittle behavior. The brittle to semi-brittle transition resulted in the emergence of slow stick slip. The duration of slow slip is two orders of magnitude longer than that of normal fast slip, consistent with the difference in duration between regular and slow (e.g., tremor) earthquakes. Textural analyses also indicate that the generation of deep slow earthquakes are attributed to the heterogeneity of frictional properties on the plate interface at the semi-brittle regime.
|
