ACAUSTIC AND MAGNETIC EFFECTS OF THE BOLIDE FALL ON 04/19/2023

The results of instrumental observations of acoustic oscillations and geomagnetic variations during the fall of the bolide on 04/19/2023 in the area of Kiev (Ukraine) are presented. It is shown that the explosion of the car was accompanied by an acoustic signal recorded at a considerable distance from the epicenter of the event (~755 km), and manifested itself in variations of the magnetic field. According to acoustic observations, 4 explosions of the largest fragments of the car were recorded. The total energy of the event was 4.2–10¹¹ J, which corresponds to about 0.1 kt in TNT equivalent. The maximum amplitude of geomagnetic variations caused by the explosion of the bolide at distances in the range of 454–909 km was from 2.5 to 4 Nt.