CTBT: Science and Technology Conference 2025 - SnT2025

Presence of an acoustic signal on seismograms after a man-made event

P2.2-086

Not scheduled

20m

Zeremoniensaal

E-poster T2.2 Seismoacoustic Sources in Theory and Practice P2.2 Seismoacoustic Sources in Theory and Practice

Speaker

Alimov Bakhodir (Institute of Seismology at the Academy of Sciences of the Republic of Uzbekistan)

Description

Sometimes, powerful quarry explosions can generate an acoustic infrasonic signal, and this can be recorded on seismic sensors. The appearance of an acoustic wave can be seen on seismograms, which are calculated based on the speed of arrival of the wave. If the azimuth coincides with the azimuth of the explosion, and the speed is V=0.33 km/sec, then we can confidently say that this signal was generated by an explosion. In this case, estimates of the speed of travel of the acoustic signal, determined by the time of the event and the distance, turn out to be slightly lower than V = 0.33 km/sec to V = 0.27 km/sec. If after a seismic event we observe an acoustic signal, this clearly tells us that the event is an explosion.