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Kinetic Damage from MeteoritesComparing the natural meteorite flux at the Earth's surface to that of space debris, reentering debris is approx. 2 orders of magnitude less of a kinetic hazard at all but the very largest (and therefore rarest) sizes compared to natural impactors. Debris re-entries over several metric tonnes are roughly as frequent as natural impactors, but the survival fraction is expected to be much higher. Kinetic hazards from meteorites are very small, with only one recorded (indirect) injury reported. We expect fatalities to be even more rare, on the order of one person killed per several millennia. That several reports exist of small fragments/sand hitting people during meteorite falls is consistent with our prediction that this should occur every decade or so.
Document ID
20170005325
Acquisition Source
Marshall Space Flight Center
Document Type
Presentation
Authors
Cooke, W.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Matney, M.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Brown, P.
(University of Western Ontario London, Ontario, Canada)
Date Acquired
June 7, 2017
Publication Date
May 15, 2017
Subject Category
Solar Physics
Report/Patent Number
M17-6007
Meeting Information
Meeting: IAA Planetary Defense Conference
Location: Tokyo
Country: Japan
Start Date: May 15, 2017
End Date: May 19, 2017
Sponsors: International Academy of Astronautics
Distribution Limits
Public
Copyright
Public Use Permitted.
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