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

P. G. Brown (), J. D. Assink, L. Astiz, R. Blaauw, M. B. Boslough, J. Borovička, N. Brachet, D. Brown, M. Campbell-Brown, L. Ceranna, W. Cooke, C. de Groot-Hedlin, D. P. Drob, W. Edwards, L. G. Evers, M. Garces, J. Gill, M. Hedlin, A. Kingery, G. Laske, A. Le Pichon, P. Mialle, D. E. Moser, A. Saffer, E. Silber, P. Smets, R. E. Spalding, P. Spurný, E. Tagliaferri, D. Uren, R. J. Weryk, R. Whitaker and Z. Krzeminski
Additional contact information
P. G. Brown: University of Western Ontario, London, Ontario N6A 3K7, Canada
J. D. Assink: Commissariat à l’Energie Atomique, Bruyères-le-Châtel, 91297 Arpajon Cedex, France
L. Astiz: Laboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, University of California, San Diego, La Jolla, California 92093-0225, USA
R. Blaauw: Marshall Information Technology Services (MITS)/Dynetics Technical Services, NASA Marshall Space Flight Center
M. B. Boslough: Sandia National Laboratories, PO Box 5800
J. Borovička: Astronomical Institute, Academy of Sciences of the Czech Republic, CZ 251 65 Ondrejov, Czech Republic
N. Brachet: Commissariat à l’Energie Atomique, Bruyères-le-Châtel, 91297 Arpajon Cedex, France
D. Brown: International Data Center, Provisional Technical Secretariat, Comprehensive Test Ban Treaty OrganizationPO Box 1200, A-1400 Vienna, Austria
M. Campbell-Brown: University of Western Ontario, London, Ontario N6A 3K7, Canada
L. Ceranna: Bundesanstalt für Geowissenschaften und Rohstoffe, Stilleweg 2, 30655 Hannover, Germany
W. Cooke: Meteoroid Environments Office, EV44, Space Environment Team, Marshall Space Flight Center
C. de Groot-Hedlin: Laboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, University of California, San Diego, La Jolla, California 92093-0225, USA
D. P. Drob: Naval Research Laboratory
W. Edwards: Natural Resources Canada, Canadian Hazard Information Service, 7 Observatory Crescent, Ottawa, Ontario K1A 0Y3, Canada
L. G. Evers: Royal Netherlands Meteorological Institute, Wilhelminalaan 10, 3732 GK De Bilt, The Netherlands
M. Garces: Infrasound Laboratory, University of Hawaii, Manoa 73-4460 Queen Kaahumanu Highway, 119 Kailua-Kona, Hawaii 96740-2638, USA
J. Gill: University of Western Ontario, London, Ontario N6A 3K7, Canada
M. Hedlin: Laboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, University of California, San Diego, La Jolla, California 92093-0225, USA
A. Kingery: ERC Incorporated/Jacobs ESSSA Group, NASA Marshall Space Flight Center
G. Laske: Laboratory for Atmospheric Acoustics, Institute of Geophysics and Planetary Physics, University of California, San Diego, La Jolla, California 92093-0225, USA
A. Le Pichon: Commissariat à l’Energie Atomique, Bruyères-le-Châtel, 91297 Arpajon Cedex, France
P. Mialle: International Data Center, Provisional Technical Secretariat, Comprehensive Test Ban Treaty OrganizationPO Box 1200, A-1400 Vienna, Austria
D. E. Moser: Marshall Information Technology Services (MITS)/Dynetics Technical Services, NASA Marshall Space Flight Center
A. Saffer: Meteoroid Environments Office, EV44, Space Environment Team, Marshall Space Flight Center
E. Silber: University of Western Ontario, London, Ontario N6A 3K7, Canada
P. Smets: Royal Netherlands Meteorological Institute, Wilhelminalaan 10, 3732 GK De Bilt, The Netherlands
R. E. Spalding: Sandia National Laboratories, PO Box 5800
P. Spurný: Astronomical Institute, Academy of Sciences of the Czech Republic, CZ 251 65 Ondrejov, Czech Republic
E. Tagliaferri: ET Space Systems, 5990 Worth Way
D. Uren: University of Western Ontario, London, Ontario N6A 3K7, Canada
R. J. Weryk: University of Western Ontario, London, Ontario N6A 3K7, Canada
R. Whitaker: Los Alamos National Laboratory, EES-17 MS F665, PO Box 1663 Los Alamos, New Mexico 87545, USA
Z. Krzeminski: University of Western Ontario, London, Ontario N6A 3K7, Canada

Nature, 2013, vol. 503, issue 7475, 238-241

Abstract: The damage caused by the asteroid 17–20 metres in diameter that exploded over Chelyabinsk, Russia, on 15 February 2013 is estimated here to have an energy equivalent to about 500 kilotons of TNT.

Date: 2013
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DOI: 10.1038/nature12741

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