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- P21G-2687: Fireball Acoustics: A Curated, Open-access Dataset of Simultaneous Optical and Infrasound Detections of Regional Meteor Events
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Board 2687‚ Hall EFG (Poster Hall)NOLA CC
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Emerson Brown, Northwestern University (First Author, Presenting Author)
Elizabeth Silber, Sandia National Laboratories
Vedant Sawal, Sandia National Laboratories
Andrea Thompson, Sandia National Laboratories
Peter Brown, University of Western Ontario
When large meteoroids enter Earth’s atmosphere, they often produce strong sound waves that decay to low-frequency sound with frequencies too low for humans to hear (<20Hz), known as infrasound. Between 2006 and 2011, 71 meteor events in southwestern Ontario, Canada were detected simultaneously by all-sky cameras and a ground-based infrasound array. We organized this data set to include information about the meteor’s entry, the infrasound signals it generated, and the atmospheric conditions that may have distorted the signals as they traveled to the infrasound station. Publicly available datasets that combine optical and infrasound observations are rare, especially for short range meteor events. This dataset fills an important gap because it contains optical ‘ground truth’ information that can be used to validate models of infrasound signal detection and meteor trajectory reconstruction. As interest in high-energy atmospheric physics grows, especially from the planetary defense perspective, datasets like this are essential for improving our understanding of how meteoroids behave as they enter the atmosphere. We make this data available to support continued research into meteor physics and signal propagation.
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