| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Outline of Final Research Achievements |
In order to describe the propagation of seismic wave-energy through random heterogeneities of the solid earth medium, we have improved the radiative transfer theory. If we imagine a fractal distribution of scatterers, we can explain the power-law decay of the maximum amplitude and coda amplitude with lapse time increasing. Since low-velocity bodies including melt/or water are expected beneath volcanoes, we have developed the radiative transfer theory which deals with the trap and release of wave energy due to resonant scattering. For the Green function retrieval from the cross-correlation function of ambient noise for the existence of an obstacle (heterogeneity) of arbitrary shape, we have theoretically shown that the generalized optical theorem as the necessary condition.
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