| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Outline of Final Research Achievements |
Natural phenomena strong enough to cause catastrophic disasters are often accompanied by generation of infrasound. Therefore, we tried to develop a technique to monitor infrasound with a sensor array over a wide area in order to prevent disasters by reliable forecast and prediction. With experiments using several potential devices for monitoring infrasound, it was confirmed that a comparable performance with microbarometers in terms of signal detection can be achievable by simultaneously using multiple MEMS pressure sensors, especially for measuring very low frequency signal such as observed when tsunami happens. In addition, some examples of successful sound source localization were shown which is based on the infrasound signals originally generated by a volcanic eruption and observed at multiple observation points.
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