5:15 PM - 6:45 PM
[MTT38-P02] The cases of infrasound generated by explosion-like events
Keywords:Infrasound, sensitive Microbarograph, explosion event, meteor
The infrasound array station has been installed in Isumi, Chiba-prefecture as a component of the International Monitoring System for the verification regime of the Comprehensive Nuclear-Test-Ban Treaty (CTBT), and Japan Weather Association (JWA) manages and maintains it.
In addition, JWA has infrasound stations in Iwate prefecture, Mie prefecture, and Toyohashi city in Aichi prefecture. We observed infrasound signals generated by the Hunga Tonga-Hunga Ha’apai volcano eruption at all stations on January 15, 2022.
A meteor and an explosion event generate infrasound. On January 15, 2024, at approximately 6:55 (JST), a meteor was observed in Kanto region, and we detected an infrasound signal generated by the meteor at Isumi station. On January 31, 2024, at approximately 15:14 (JST), a fire and explosion accident occurred at Taketoyo Thermal Power Station, and we detected an infrasound signal generated by the explosion accident at Toyohashi station. However, we could not detect a signal in Mie station. We consider it was because the propagation of infrasound to Mie station was disturbed by some mountains.
In this presentation, we will introduce prominent cases of infrasound and make a consideration about these cases.
In addition, JWA has infrasound stations in Iwate prefecture, Mie prefecture, and Toyohashi city in Aichi prefecture. We observed infrasound signals generated by the Hunga Tonga-Hunga Ha’apai volcano eruption at all stations on January 15, 2022.
A meteor and an explosion event generate infrasound. On January 15, 2024, at approximately 6:55 (JST), a meteor was observed in Kanto region, and we detected an infrasound signal generated by the meteor at Isumi station. On January 31, 2024, at approximately 15:14 (JST), a fire and explosion accident occurred at Taketoyo Thermal Power Station, and we detected an infrasound signal generated by the explosion accident at Toyohashi station. However, we could not detect a signal in Mie station. We consider it was because the propagation of infrasound to Mie station was disturbed by some mountains.
In this presentation, we will introduce prominent cases of infrasound and make a consideration about these cases.