| Budget Amount *help |
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
The purpose of this research is to construct a method that can appropriately calculate plate subduction phenomena on a geological time scale, and to incorporate the results into initial and boundary conditions for calculations on a geophysical time scale. We propose a basic idea when constructing a digital twin for the solid Earth is to calculate crustal deformation using the reference ellipsoid itself used in GNSS data analysis. Based on this idea, we calculate slip response functions for southwest Japan and northeast Japan, and a viscoelastic structure was introduced. Regarding stress evaluation along the fault plane, modeling of the fault plane and handling of the edges of the model space were found to be future issues in calculating long-term subduction.
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