A 500-kiloton airburst over Chelyabinsk and an enhanced hazard from small impactors

  title={A 500-kiloton airburst over Chelyabinsk and an enhanced hazard from small impactors},
  author={P. Brown and J. Assink and L. Astiz and R. Blaauw and M. Boslough and J. Borovi{\vc}ka and N. Brachet and D. Brown and M. Campbell-Brown and L. Ceranna and W. Cooke and C. D. Groot–Hedlin and D. Drob and W. Edwards and L. Evers and M. Garces and J. Gill and M. Hedlin and A. Kingery and G. Laske and A. L. Pichon and P. Mialle and D. Moser and A. Saffer and E. Silber and P. Smets and R. E. Spalding and P. Spurn'y and E. Tagliaferri and D. Uren and R. Weryk and R. Whitaker and Z. Krzeminski},
  • P. Brown, J. Assink, +30 authors Z. Krzeminski
  • Published 2013
  • Environmental Science, Medicine
  • Nature
  • Most large (over a kilometre in diameter) near-Earth asteroids are now known, but recognition that airbursts (or fireballs resulting from nuclear-weapon-sized detonations of meteoroids in the atmosphere) have the potential to do greater damage than previously thought has shifted an increasing portion of the residual impact risk (the risk of impact from an unknown object) to smaller objects. Above the threshold size of impactor at which the atmosphere absorbs sufficient energy to prevent a… CONTINUE READING
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