| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2016: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
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| Outline of Final Research Achievements |
Magnitude of spatiotemporal variation of ground acoustic properties that affects environmental noise propagation has not been well known. In this project, a temporal variation model was derived from in-situ observations of meteorological elements, soil moisture content and ground acoustic properties. Thereafter, a spatiotemporal variation model was established by integrating the temporal variation model and the land cover classification estimated using hyperspectral imaging data. From sound propagation calculations using the established model, it was demonstrated that spatiotemporal variation of ground acoustic properties needed to be taken into account.
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