Impact hazard assessment from the automatic detection of meteoric and re-entry fireballs recorded by the SPMN network

The disruption of asteroids and comets can produce meteoroids that end up impacting the Earth’s atmosphere, creating shock waves or even excavating craters so they generate hazardous scenarios. In this thesis different software tools have been developed with the aim of automating the detection and analysis of fireballs from multiple station video recordings. Given the automatic video processing, it opens the possibility of providing early warnings associated with shock waves and massive meteorite arrival to the ground. As an example of reduction procedure two meteoric events have been analyzed, obtaining their real atmospheric trajectories, characterizing their flight and computing their respective heliocentric orbits. A method to estimate meteorite-dropping likelihood has also been implemented. In one of the study cases, NASA satellite data has been used to reconstruct the fireball trajectory and compute its mass and luminosity. Finally, the implications for impact hazard assessment associated to meter-sized meteoroids are discussed and assess in view of recent evidence