Coordinated observations of a ~45 g earthgrazing fireball localize thermospheric shock generation to volatile-enhanced hydrodynamic shielding that enables continuum-like flow and detectable infrasound.
Journal of Atmospheric and Solar-Terrestrial Physics 216, 105587,10.1016/j.jastp.2021.105587
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Analysis of 623 bolides finds 50% infrasound detection rate controlled primarily by entry angle rather than energy, with steeper and lower-altitude events more detectable.
citing papers explorer
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Shock wave formation in the thermosphere by an earthgrazing fireball: Empirical evidence for volatile-enhanced hydrodynamic shielding
Coordinated observations of a ~45 g earthgrazing fireball localize thermospheric shock generation to volatile-enhanced hydrodynamic shielding that enables continuum-like flow and detectable infrasound.
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The Role of Source Geometry and Atmospheric Propagation in Global Bolide Infrasound Detectability
Analysis of 623 bolides finds 50% infrasound detection rate controlled primarily by entry angle rather than energy, with steeper and lower-altitude events more detectable.