Statistical analysis of fireballs: Seismic signature survey

Abstract Fireballs are infrequently recorded by seismic sensors on the ground. If recorded, they usually reported as one-off events. This study is first bulk analysis of largest single fireball data set, observed Desert Fireball Network (DFN) in Australia period 2014–2019. The DFN typically observes fireballs from cm-m scale impactors. We identified 25 time series Australian National Seismograph (ANSN). corresponds to 1.8% surveyed fireballs, at kinetic energy range $10^6$ – $10^{10}$ J. peaks were consistent with calculated arrival times direct airwave or ground-coupled Rayleigh wave caused shock waves atmosphere (either due fragmentation passage Mach cone). Our work suggests that identification events depends both physical properties a (such and entry angle atmosphere) sensitivity instrument. likely detectable within 200 km air distance between station, for used ANSN. each observatory had been accompanied sensor similar sensitivity, 50% could have detected. These statistics justify future consideration expanding camera network into domain.