NEO Impact Consequences and Hazards

Marcello Fulchignoni; M. Antonietta Barucci

doi:10.1016/j.crhy.2005.01.004

The Near Earth Objects: possible impactors of the Earth/Les astéroïdes geocroiseurs : impacteurs potentiels de la Terre

NEO Impact Consequences and Hazards

Presented by: Pierre Encrenaz

Marcello Fulchignoni ^1,²; M. Antonietta Barucci ¹

¹ LESIA, Observatoire de Paris, 5, place J. Janssen, 92195 Meudon Principal cedex, France
² Université Denis Diderot – Paris 7, 2, place Jussieu, 75005 Paris, France

Comptes Rendus. Physique, The Near Earth Objects : possible impactors of the Earth, Volume 6 (2005) no. 3, pp. 283-289.

Abstract
Résumé

A short overview of main characteristics of the impactor population from which major terrestrial impacts originated is given. This population includes the objects that may hit the Earth in the future (potentially hazardous asteroids, PHAs). An impact frequency (a way of measuring the probability of a given collision) versus impact energy (an index of the impact consequences) relationship is described on the basis of this analysis. The current state of actions started planetwide by the most developed countries to face the threat represented by an asteroid collision with the Earth is summarized. The ‘Torino scale’, which assesses the risks connected with a discovery of a PHA in a simple and clear way is finally described.

Les principales caractéristiques de la population des impacteurs qui ont formé les plus importantes structures d'impact terrestres sont brièvement résumées. Dans cette population sont également inclus les objets qui peuvent avoir une collision avec la Terre dans le futur (les astéroïdes potentiellement dangereux, APDs). Sur la base de cette analyse, on présente la relation entre la fréquence des impacts (qui est une mesure de la probabilité d'une collision) et l'énergie qu'ils transportent (à partir de laquelle on peut évaluer les conséquences des collisions). On discute les actions envisagées dans les pays les plus développés pour affronter la menace que représente la collision d'un astéroïde avec la Terre. En conclusion on décrit « l'échelle de Turin », qui permet d'évaluer d'une façon simple et claire les risques associés à la découverte d'un APD.

Published online: 2005-02-16

DOI: 10.1016/j.crhy.2005.01.004

Keywords: NEO, Impact population, Potentially hazardous asteroids, Torino scale
Mots-clés : NEO, Population des impacteurs, Astéroïdes potentiellement dangereux, l'échelle de Turin

Author's affiliations:

Marcello Fulchignoni ^{1, 2}; M. Antonietta Barucci ¹

¹ LESIA, Observatoire de Paris, 5, place J. Janssen, 92195 Meudon Principal cedex, France
² Université Denis Diderot – Paris 7, 2, place Jussieu, 75005 Paris, France

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     title = {NEO {Impact} {Consequences} and {Hazards}},
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     pages = {283--289},
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Marcello Fulchignoni; M. Antonietta Barucci. NEO Impact Consequences and Hazards. Comptes Rendus. Physique, The Near Earth Objects : possible impactors of the Earth, Volume 6 (2005) no. 3, pp. 283-289. doi : 10.1016/j.crhy.2005.01.004. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2005.01.004/

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